mirror of
https://github.com/Azornes/Comfyui-LayerForge.git
synced 2026-03-22 05:02:11 -03:00
03c841380e
Introduces active chunk management for mask drawing, activating only nearby chunks during drawing for performance. Updates the active mask canvas to show all chunks but optimizes updates to redraw only active chunks during drawing, reducing lag. Adds LRU-style tracking and safety limits for active chunks, and improves chunk activation logic for both drawing and mask application.
1646 lines
76 KiB
JavaScript
1646 lines
76 KiB
JavaScript
import { createModuleLogger } from "./utils/LoggerUtils.js";
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const log = createModuleLogger('Mask_tool');
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export class MaskTool {
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constructor(canvasInstance, callbacks = {}) {
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this.ACTIVE_MASK_UPDATE_DELAY = 16; // ~60fps throttling
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this.canvasInstance = canvasInstance;
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this.mainCanvas = canvasInstance.canvas;
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this.onStateChange = callbacks.onStateChange || null;
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// Initialize chunked mask system
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this.maskChunks = new Map();
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this.chunkSize = 512;
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this.activeChunkBounds = null;
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// Initialize active chunk management
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this.activeChunkRadius = 1; // 3x3 grid of active chunks (radius 1 = 9 chunks total)
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this.currentDrawingChunk = null;
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this.maxActiveChunks = 25; // Safety limit to prevent memory issues (5x5 grid max)
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// Create active mask canvas (composite of chunks)
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this.activeMaskCanvas = document.createElement('canvas');
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const activeMaskCtx = this.activeMaskCanvas.getContext('2d', { willReadFrequently: true });
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if (!activeMaskCtx) {
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throw new Error("Failed to get 2D context for active mask canvas");
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}
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this.activeMaskCtx = activeMaskCtx;
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this.x = 0;
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this.y = 0;
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this.isOverlayVisible = true;
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this.isActive = false;
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this.brushSize = 20;
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this.brushStrength = 0.5;
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this.brushHardness = 0.5;
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this.isDrawing = false;
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this.lastPosition = null;
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this.previewCanvas = document.createElement('canvas');
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const previewCtx = this.previewCanvas.getContext('2d', { willReadFrequently: true });
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if (!previewCtx) {
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throw new Error("Failed to get 2D context for preview canvas");
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}
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this.previewCtx = previewCtx;
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this.previewVisible = false;
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this.previewCanvasInitialized = false;
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// Initialize shape preview system
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this.shapePreviewCanvas = document.createElement('canvas');
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const shapePreviewCtx = this.shapePreviewCanvas.getContext('2d', { willReadFrequently: true });
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if (!shapePreviewCtx) {
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throw new Error("Failed to get 2D context for shape preview canvas");
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}
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this.shapePreviewCtx = shapePreviewCtx;
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this.shapePreviewVisible = false;
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this.isPreviewMode = false;
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// Initialize performance optimization flags
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this.activeMaskNeedsUpdate = false;
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this.activeMaskUpdateTimeout = null;
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this.initMaskCanvas();
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}
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// Temporary compatibility getters - will be replaced with chunked system
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get maskCanvas() {
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return this.activeMaskCanvas;
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}
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get maskCtx() {
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return this.activeMaskCtx;
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}
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initPreviewCanvas() {
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if (this.previewCanvas.parentElement) {
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this.previewCanvas.parentElement.removeChild(this.previewCanvas);
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}
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this.previewCanvas.width = this.canvasInstance.canvas.width;
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this.previewCanvas.height = this.canvasInstance.canvas.height;
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this.previewCanvas.style.position = 'absolute';
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this.previewCanvas.style.left = `${this.canvasInstance.canvas.offsetLeft}px`;
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this.previewCanvas.style.top = `${this.canvasInstance.canvas.offsetTop}px`;
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this.previewCanvas.style.pointerEvents = 'none';
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this.previewCanvas.style.zIndex = '10';
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if (this.canvasInstance.canvas.parentElement) {
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this.canvasInstance.canvas.parentElement.appendChild(this.previewCanvas);
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}
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}
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setBrushHardness(hardness) {
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this.brushHardness = Math.max(0, Math.min(1, hardness));
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}
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initMaskCanvas() {
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// Initialize chunked system
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this.chunkSize = 512;
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this.maskChunks = new Map();
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// Create initial active mask canvas
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this.updateActiveMaskCanvas();
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log.info(`Initialized chunked mask system with chunk size: ${this.chunkSize}x${this.chunkSize}`);
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}
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/**
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* Updates the active mask canvas to show ALL chunks but optimize updates during drawing
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* Always shows all chunks, but during drawing only updates the active chunks for performance
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*/
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updateActiveMaskCanvas(forceFullUpdate = false) {
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// Always show all chunks - find bounds of all non-empty chunks
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const chunkBounds = this.getAllChunkBounds();
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if (!chunkBounds) {
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// No chunks with data - create minimal canvas
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this.activeMaskCanvas.width = 1;
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this.activeMaskCanvas.height = 1;
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this.x = 0;
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this.y = 0;
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this.activeChunkBounds = null;
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log.debug("No mask chunks found - created minimal active canvas");
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return;
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}
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// Calculate canvas size to cover ALL chunks
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const canvasLeft = chunkBounds.minX * this.chunkSize;
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const canvasTop = chunkBounds.minY * this.chunkSize;
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const canvasWidth = (chunkBounds.maxX - chunkBounds.minX + 1) * this.chunkSize;
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const canvasHeight = (chunkBounds.maxY - chunkBounds.minY + 1) * this.chunkSize;
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// Update active mask canvas size and position if needed
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if (this.activeMaskCanvas.width !== canvasWidth ||
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this.activeMaskCanvas.height !== canvasHeight ||
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this.x !== canvasLeft ||
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this.y !== canvasTop ||
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forceFullUpdate) {
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this.activeMaskCanvas.width = canvasWidth;
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this.activeMaskCanvas.height = canvasHeight;
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this.x = canvasLeft;
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this.y = canvasTop;
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this.activeChunkBounds = chunkBounds;
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// Full redraw when canvas size changes
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this.activeMaskCtx.clearRect(0, 0, canvasWidth, canvasHeight);
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// Draw ALL chunks
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for (let chunkY = chunkBounds.minY; chunkY <= chunkBounds.maxY; chunkY++) {
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for (let chunkX = chunkBounds.minX; chunkX <= chunkBounds.maxX; chunkX++) {
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const chunkKey = `${chunkX},${chunkY}`;
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const chunk = this.maskChunks.get(chunkKey);
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if (chunk && !chunk.isEmpty) {
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const destX = (chunkX - chunkBounds.minX) * this.chunkSize;
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const destY = (chunkY - chunkBounds.minY) * this.chunkSize;
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this.activeMaskCtx.drawImage(chunk.canvas, destX, destY);
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}
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}
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}
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log.debug(`Full update: rendered ${this.getAllNonEmptyChunkCount()} chunks`);
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}
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else {
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// Canvas size unchanged - this is handled by partial updates during drawing
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this.activeChunkBounds = chunkBounds;
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}
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}
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/**
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* Finds the bounds of all chunks that contain mask data
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* Returns null if no chunks have data
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*/
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getAllChunkBounds() {
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let minX = Infinity;
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let minY = Infinity;
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let maxX = -Infinity;
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let maxY = -Infinity;
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let hasData = false;
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for (const [chunkKey, chunk] of this.maskChunks) {
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if (!chunk.isEmpty) {
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const [chunkXStr, chunkYStr] = chunkKey.split(',');
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const chunkX = parseInt(chunkXStr);
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const chunkY = parseInt(chunkYStr);
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minX = Math.min(minX, chunkX);
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minY = Math.min(minY, chunkY);
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maxX = Math.max(maxX, chunkX);
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maxY = Math.max(maxY, chunkY);
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hasData = true;
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}
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}
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return hasData ? { minX, minY, maxX, maxY } : null;
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}
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/**
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* Finds the bounds of only active chunks that contain mask data
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* Returns null if no active chunks have data
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*/
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getActiveChunkBounds() {
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let minX = Infinity;
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let minY = Infinity;
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let maxX = -Infinity;
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let maxY = -Infinity;
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let hasData = false;
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for (const [chunkKey, chunk] of this.maskChunks) {
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if (!chunk.isEmpty && chunk.isActive) {
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const [chunkXStr, chunkYStr] = chunkKey.split(',');
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const chunkX = parseInt(chunkXStr);
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const chunkY = parseInt(chunkYStr);
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minX = Math.min(minX, chunkX);
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minY = Math.min(minY, chunkY);
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maxX = Math.max(maxX, chunkX);
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maxY = Math.max(maxY, chunkY);
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hasData = true;
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}
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}
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return hasData ? { minX, minY, maxX, maxY } : null;
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}
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/**
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* Counts all non-empty chunks
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*/
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getAllNonEmptyChunkCount() {
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let count = 0;
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for (const chunk of this.maskChunks.values()) {
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if (!chunk.isEmpty)
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count++;
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}
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return count;
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}
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/**
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* Counts active non-empty chunks
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*/
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getActiveChunkCount() {
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let count = 0;
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for (const chunk of this.maskChunks.values()) {
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if (!chunk.isEmpty && chunk.isActive)
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count++;
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}
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return count;
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}
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/**
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* Updates which chunks are active for drawing operations based on current drawing position
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* Only activates chunks in a radius around the drawing position for performance
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*/
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updateActiveChunksForDrawing(worldCoords) {
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const currentChunkX = Math.floor(worldCoords.x / this.chunkSize);
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const currentChunkY = Math.floor(worldCoords.y / this.chunkSize);
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// Update current drawing chunk
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this.currentDrawingChunk = { x: currentChunkX, y: currentChunkY };
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// Deactivate all chunks first
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for (const chunk of this.maskChunks.values()) {
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chunk.isActive = false;
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}
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// Activate chunks in radius around current drawing position
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let activatedCount = 0;
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for (let dy = -this.activeChunkRadius; dy <= this.activeChunkRadius; dy++) {
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for (let dx = -this.activeChunkRadius; dx <= this.activeChunkRadius; dx++) {
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const chunkX = currentChunkX + dx;
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const chunkY = currentChunkY + dy;
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const chunkKey = `${chunkX},${chunkY}`;
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// Get or create chunk if it doesn't exist
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const chunk = this.getChunkForPosition(chunkX * this.chunkSize, chunkY * this.chunkSize);
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chunk.isActive = true;
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chunk.lastAccessTime = Date.now();
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activatedCount++;
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// Safety check to prevent too many active chunks
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if (activatedCount >= this.maxActiveChunks) {
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log.warn(`Reached maximum active chunks limit (${this.maxActiveChunks})`);
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return;
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}
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}
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}
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log.debug(`Activated ${activatedCount} chunks around drawing position (${currentChunkX}, ${currentChunkY})`);
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}
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/**
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* Gets or creates a chunk for the given world coordinates
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*/
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getChunkForPosition(worldX, worldY) {
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const chunkX = Math.floor(worldX / this.chunkSize);
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const chunkY = Math.floor(worldY / this.chunkSize);
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const chunkKey = `${chunkX},${chunkY}`;
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let chunk = this.maskChunks.get(chunkKey);
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if (!chunk) {
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chunk = this.createChunk(chunkX, chunkY);
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this.maskChunks.set(chunkKey, chunk);
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}
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return chunk;
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}
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/**
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* Creates a new chunk at the given chunk coordinates
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*/
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createChunk(chunkX, chunkY) {
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const canvas = document.createElement('canvas');
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canvas.width = this.chunkSize;
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canvas.height = this.chunkSize;
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const ctx = canvas.getContext('2d', { willReadFrequently: true });
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if (!ctx) {
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throw new Error("Failed to get 2D context for chunk canvas");
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}
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const chunk = {
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canvas,
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ctx,
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x: chunkX * this.chunkSize,
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y: chunkY * this.chunkSize,
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isDirty: false,
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isEmpty: true,
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isActive: false,
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lastAccessTime: Date.now()
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};
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log.debug(`Created chunk at (${chunkX}, ${chunkY}) covering world area (${chunk.x}, ${chunk.y}) to (${chunk.x + this.chunkSize}, ${chunk.y + this.chunkSize})`);
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return chunk;
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}
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activate() {
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if (!this.previewCanvasInitialized) {
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this.initPreviewCanvas();
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this.previewCanvasInitialized = true;
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}
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this.isActive = true;
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this.previewCanvas.style.display = 'block';
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this.canvasInstance.interaction.mode = 'drawingMask';
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if (this.canvasInstance.canvasState.maskUndoStack.length === 0) {
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this.canvasInstance.canvasState.saveMaskState();
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}
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this.canvasInstance.updateHistoryButtons();
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log.info("Mask tool activated");
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}
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deactivate() {
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this.isActive = false;
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this.previewCanvas.style.display = 'none';
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this.canvasInstance.interaction.mode = 'none';
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this.canvasInstance.updateHistoryButtons();
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log.info("Mask tool deactivated");
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}
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setBrushSize(size) {
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this.brushSize = Math.max(1, size);
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}
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setBrushStrength(strength) {
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this.brushStrength = Math.max(0, Math.min(1, strength));
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}
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handleMouseDown(worldCoords, viewCoords) {
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if (!this.isActive)
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return;
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this.isDrawing = true;
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this.lastPosition = worldCoords;
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// Activate chunks around the drawing position for performance
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this.updateActiveChunksForDrawing(worldCoords);
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this.draw(worldCoords);
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this.clearPreview();
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}
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handleMouseMove(worldCoords, viewCoords) {
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if (this.isActive) {
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this.drawBrushPreview(viewCoords);
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}
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if (!this.isActive || !this.isDrawing)
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return;
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// Dynamically update active chunks as user moves while drawing
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this.updateActiveChunksForDrawing(worldCoords);
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this.draw(worldCoords);
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this.lastPosition = worldCoords;
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}
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handleMouseLeave() {
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this.previewVisible = false;
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this.clearPreview();
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}
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handleMouseEnter() {
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this.previewVisible = true;
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}
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handleMouseUp(viewCoords) {
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if (!this.isActive)
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return;
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if (this.isDrawing) {
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this.isDrawing = false;
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this.lastPosition = null;
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this.currentDrawingChunk = null;
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// After drawing is complete, update active canvas to show all chunks
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this.updateActiveMaskCanvas(true); // forceShowAll = true
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this.canvasInstance.canvasState.saveMaskState();
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if (this.onStateChange) {
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this.onStateChange();
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}
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this.drawBrushPreview(viewCoords);
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}
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}
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draw(worldCoords) {
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if (!this.lastPosition) {
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this.lastPosition = worldCoords;
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}
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// Draw on chunks instead of single canvas
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this.drawOnChunks(this.lastPosition, worldCoords);
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// Only update active canvas if we drew on chunks that are currently visible
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// This prevents unnecessary recomposition during drawing
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this.updateActiveCanvasIfNeeded(this.lastPosition, worldCoords);
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}
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/**
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* Draws a line between two world coordinates on the appropriate chunks
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*/
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drawOnChunks(startWorld, endWorld) {
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// Calculate all chunks that this line might touch
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const minX = Math.min(startWorld.x, endWorld.x) - this.brushSize;
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const maxX = Math.max(startWorld.x, endWorld.x) + this.brushSize;
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const minY = Math.min(startWorld.y, endWorld.y) - this.brushSize;
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const maxY = Math.max(startWorld.y, endWorld.y) + this.brushSize;
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const chunkMinX = Math.floor(minX / this.chunkSize);
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const chunkMinY = Math.floor(minY / this.chunkSize);
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const chunkMaxX = Math.floor(maxX / this.chunkSize);
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const chunkMaxY = Math.floor(maxY / this.chunkSize);
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// Draw on all affected chunks
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for (let chunkY = chunkMinY; chunkY <= chunkMaxY; chunkY++) {
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for (let chunkX = chunkMinX; chunkX <= chunkMaxX; chunkX++) {
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const chunk = this.getChunkForPosition(chunkX * this.chunkSize, chunkY * this.chunkSize);
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this.drawLineOnChunk(chunk, startWorld, endWorld);
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}
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}
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}
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/**
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* Draws a line on a specific chunk
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*/
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drawLineOnChunk(chunk, startWorld, endWorld) {
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// Convert world coordinates to chunk-local coordinates
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const startLocal = {
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x: startWorld.x - chunk.x,
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y: startWorld.y - chunk.y
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};
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const endLocal = {
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x: endWorld.x - chunk.x,
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y: endWorld.y - chunk.y
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};
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// Check if the line intersects this chunk
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if (!this.lineIntersectsChunk(startLocal, endLocal, this.chunkSize)) {
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return;
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}
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// Draw the line on this chunk
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chunk.ctx.beginPath();
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chunk.ctx.moveTo(startLocal.x, startLocal.y);
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chunk.ctx.lineTo(endLocal.x, endLocal.y);
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const gradientRadius = this.brushSize / 2;
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if (this.brushHardness === 1) {
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chunk.ctx.strokeStyle = `rgba(255, 255, 255, ${this.brushStrength})`;
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}
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else {
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const innerRadius = gradientRadius * this.brushHardness;
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const gradient = chunk.ctx.createRadialGradient(endLocal.x, endLocal.y, innerRadius, endLocal.x, endLocal.y, gradientRadius);
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gradient.addColorStop(0, `rgba(255, 255, 255, ${this.brushStrength})`);
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gradient.addColorStop(1, `rgba(255, 255, 255, 0)`);
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chunk.ctx.strokeStyle = gradient;
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}
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chunk.ctx.lineWidth = this.brushSize;
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chunk.ctx.lineCap = 'round';
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chunk.ctx.lineJoin = 'round';
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chunk.ctx.globalCompositeOperation = 'source-over';
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chunk.ctx.stroke();
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// Mark chunk as dirty and not empty
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chunk.isDirty = true;
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chunk.isEmpty = false;
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log.debug(`Drew on chunk (${Math.floor(chunk.x / this.chunkSize)}, ${Math.floor(chunk.y / this.chunkSize)})`);
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}
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/**
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* Checks if a line intersects with a chunk bounds
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*/
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lineIntersectsChunk(startLocal, endLocal, chunkSize) {
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// Expand bounds by brush size to catch partial intersections
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const margin = this.brushSize / 2;
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const left = -margin;
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const top = -margin;
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const right = chunkSize + margin;
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const bottom = chunkSize + margin;
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// Check if either point is inside the expanded bounds
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if ((startLocal.x >= left && startLocal.x <= right && startLocal.y >= top && startLocal.y <= bottom) ||
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(endLocal.x >= left && endLocal.x <= right && endLocal.y >= top && endLocal.y <= bottom)) {
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return true;
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}
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// Check if line crosses chunk bounds (simplified check)
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return true; // For now, always draw - more precise intersection can be added later
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}
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/**
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* Updates active canvas when drawing affects chunks with throttling to prevent lag
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* During drawing, only updates the affected active chunks for performance
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*/
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updateActiveCanvasIfNeeded(startWorld, endWorld) {
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// Calculate which chunks were affected by this drawing operation
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const minX = Math.min(startWorld.x, endWorld.x) - this.brushSize;
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const maxX = Math.max(startWorld.x, endWorld.x) + this.brushSize;
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const minY = Math.min(startWorld.y, endWorld.y) - this.brushSize;
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const maxY = Math.max(startWorld.y, endWorld.y) + this.brushSize;
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const affectedChunkMinX = Math.floor(minX / this.chunkSize);
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const affectedChunkMinY = Math.floor(minY / this.chunkSize);
|
|
const affectedChunkMaxX = Math.floor(maxX / this.chunkSize);
|
|
const affectedChunkMaxY = Math.floor(maxY / this.chunkSize);
|
|
// During drawing, only update affected chunks that are active for performance
|
|
if (this.isDrawing) {
|
|
// Use throttled partial update for active chunks only
|
|
this.scheduleThrottledActiveMaskUpdate(affectedChunkMinX, affectedChunkMinY, affectedChunkMaxX, affectedChunkMaxY);
|
|
}
|
|
else {
|
|
// Not drawing - do full update to show all chunks
|
|
this.updateActiveMaskCanvas(true);
|
|
}
|
|
}
|
|
/**
|
|
* Schedules a throttled update of the active mask canvas to prevent excessive redraws
|
|
* Only updates at most once per ACTIVE_MASK_UPDATE_DELAY milliseconds
|
|
*/
|
|
scheduleThrottledActiveMaskUpdate(chunkMinX, chunkMinY, chunkMaxX, chunkMaxY) {
|
|
// Mark that an update is needed
|
|
this.activeMaskNeedsUpdate = true;
|
|
// If there's already a pending update, don't schedule another one
|
|
if (this.activeMaskUpdateTimeout !== null) {
|
|
return;
|
|
}
|
|
// Schedule the update with throttling
|
|
this.activeMaskUpdateTimeout = window.setTimeout(() => {
|
|
if (this.activeMaskNeedsUpdate) {
|
|
// Perform partial update for the affected chunks
|
|
this.updateActiveCanvasPartial(chunkMinX, chunkMinY, chunkMaxX, chunkMaxY);
|
|
this.activeMaskNeedsUpdate = false;
|
|
log.debug("Performed throttled partial active canvas update");
|
|
}
|
|
this.activeMaskUpdateTimeout = null;
|
|
}, this.ACTIVE_MASK_UPDATE_DELAY);
|
|
}
|
|
/**
|
|
* Partially updates the active canvas by redrawing only specific chunks that are active
|
|
* During drawing, only updates active chunks for performance
|
|
* Now handles dynamic chunk activation by expanding canvas if needed
|
|
*/
|
|
updateActiveCanvasPartial(chunkMinX, chunkMinY, chunkMaxX, chunkMaxY) {
|
|
// Check if any active chunks are outside current canvas bounds
|
|
const activeChunkBounds = this.getActiveChunkBounds();
|
|
const allChunkBounds = this.getAllChunkBounds();
|
|
if (!allChunkBounds) {
|
|
return; // No chunks at all
|
|
}
|
|
// If active chunks extend beyond current canvas, do full update to resize canvas
|
|
if (activeChunkBounds && this.activeChunkBounds &&
|
|
(activeChunkBounds.minX < this.activeChunkBounds.minX ||
|
|
activeChunkBounds.maxX > this.activeChunkBounds.maxX ||
|
|
activeChunkBounds.minY < this.activeChunkBounds.minY ||
|
|
activeChunkBounds.maxY > this.activeChunkBounds.maxY)) {
|
|
log.debug("Active chunks extended beyond canvas bounds - performing full update");
|
|
this.updateActiveMaskCanvas(true);
|
|
return;
|
|
}
|
|
if (!this.activeChunkBounds) {
|
|
// No active bounds - do full update
|
|
this.updateActiveMaskCanvas();
|
|
return;
|
|
}
|
|
// Only redraw the affected chunks that are active and within the current active canvas bounds
|
|
for (let chunkY = chunkMinY; chunkY <= chunkMaxY; chunkY++) {
|
|
for (let chunkX = chunkMinX; chunkX <= chunkMaxX; chunkX++) {
|
|
// Check if this chunk is within canvas bounds (all chunks with data)
|
|
if (chunkX >= this.activeChunkBounds.minX && chunkX <= this.activeChunkBounds.maxX &&
|
|
chunkY >= this.activeChunkBounds.minY && chunkY <= this.activeChunkBounds.maxY) {
|
|
const chunkKey = `${chunkX},${chunkY}`;
|
|
const chunk = this.maskChunks.get(chunkKey);
|
|
// Update if chunk exists and is currently active (regardless of isEmpty for new chunks)
|
|
if (chunk && chunk.isActive) {
|
|
// Calculate position on active canvas (relative to all chunks bounds)
|
|
const destX = (chunkX - this.activeChunkBounds.minX) * this.chunkSize;
|
|
const destY = (chunkY - this.activeChunkBounds.minY) * this.chunkSize;
|
|
// Clear the area first, then redraw
|
|
this.activeMaskCtx.clearRect(destX, destY, this.chunkSize, this.chunkSize);
|
|
if (!chunk.isEmpty) {
|
|
this.activeMaskCtx.drawImage(chunk.canvas, destX, destY);
|
|
}
|
|
log.debug(`Partial update: refreshed active chunk (${chunkX}, ${chunkY}) - isEmpty: ${chunk.isEmpty}`);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
drawBrushPreview(viewCoords) {
|
|
if (!this.previewVisible || this.isDrawing) {
|
|
this.clearPreview();
|
|
return;
|
|
}
|
|
this.clearPreview();
|
|
const zoom = this.canvasInstance.viewport.zoom;
|
|
const radius = (this.brushSize / 2) * zoom;
|
|
this.previewCtx.beginPath();
|
|
this.previewCtx.arc(viewCoords.x, viewCoords.y, radius, 0, 2 * Math.PI);
|
|
this.previewCtx.strokeStyle = 'rgba(255, 255, 255, 0.8)';
|
|
this.previewCtx.lineWidth = 1;
|
|
this.previewCtx.setLineDash([2, 4]);
|
|
this.previewCtx.stroke();
|
|
}
|
|
clearPreview() {
|
|
this.previewCtx.clearRect(0, 0, this.previewCanvas.width, this.previewCanvas.height);
|
|
this.clearShapePreview();
|
|
}
|
|
/**
|
|
* Initialize shape preview canvas for showing blue outline during slider adjustments
|
|
* Canvas is pinned to viewport and covers the entire visible area
|
|
*/
|
|
initShapePreviewCanvas() {
|
|
if (this.shapePreviewCanvas.parentElement) {
|
|
this.shapePreviewCanvas.parentElement.removeChild(this.shapePreviewCanvas);
|
|
}
|
|
// Canvas covers entire viewport - pinned to screen, not world
|
|
this.shapePreviewCanvas.width = this.canvasInstance.canvas.width;
|
|
this.shapePreviewCanvas.height = this.canvasInstance.canvas.height;
|
|
// Pin canvas to viewport - no world coordinate positioning
|
|
this.shapePreviewCanvas.style.position = 'absolute';
|
|
this.shapePreviewCanvas.style.left = '0px';
|
|
this.shapePreviewCanvas.style.top = '0px';
|
|
this.shapePreviewCanvas.style.width = '100%';
|
|
this.shapePreviewCanvas.style.height = '100%';
|
|
this.shapePreviewCanvas.style.pointerEvents = 'none';
|
|
this.shapePreviewCanvas.style.zIndex = '15'; // Above regular preview
|
|
this.shapePreviewCanvas.style.imageRendering = 'pixelated'; // Sharp rendering
|
|
if (this.canvasInstance.canvas.parentElement) {
|
|
this.canvasInstance.canvas.parentElement.appendChild(this.shapePreviewCanvas);
|
|
}
|
|
}
|
|
/**
|
|
* Show blue outline preview of expansion/contraction during slider adjustment
|
|
*/
|
|
showShapePreview(expansionValue, featherValue = 0) {
|
|
if (!this.canvasInstance.outputAreaShape?.points || this.canvasInstance.outputAreaShape.points.length < 3) {
|
|
return;
|
|
}
|
|
if (!this.shapePreviewCanvas.parentElement)
|
|
this.initShapePreviewCanvas();
|
|
this.isPreviewMode = true;
|
|
this.shapePreviewVisible = true;
|
|
this.shapePreviewCanvas.style.display = 'block';
|
|
this.clearShapePreview();
|
|
const shape = this.canvasInstance.outputAreaShape;
|
|
const viewport = this.canvasInstance.viewport;
|
|
const bounds = this.canvasInstance.outputAreaBounds;
|
|
// Convert shape points to world coordinates first (relative to output area bounds)
|
|
const worldShapePoints = shape.points.map(p => ({
|
|
x: bounds.x + p.x,
|
|
y: bounds.y + p.y
|
|
}));
|
|
// Then convert world coordinates to screen coordinates
|
|
const screenPoints = worldShapePoints.map(p => ({
|
|
x: (p.x - viewport.x) * viewport.zoom,
|
|
y: (p.y - viewport.y) * viewport.zoom
|
|
}));
|
|
// This function now returns Point[][] to handle islands.
|
|
const allContours = this._calculatePreviewPointsScreen([screenPoints], expansionValue, viewport.zoom);
|
|
// Draw main expansion/contraction preview
|
|
this.shapePreviewCtx.strokeStyle = '#4A9EFF';
|
|
this.shapePreviewCtx.lineWidth = 2;
|
|
this.shapePreviewCtx.setLineDash([4, 4]);
|
|
this.shapePreviewCtx.globalAlpha = 0.8;
|
|
for (const contour of allContours) {
|
|
if (contour.length < 2)
|
|
continue;
|
|
this.shapePreviewCtx.beginPath();
|
|
this.shapePreviewCtx.moveTo(contour[0].x, contour[0].y);
|
|
for (let i = 1; i < contour.length; i++) {
|
|
this.shapePreviewCtx.lineTo(contour[i].x, contour[i].y);
|
|
}
|
|
this.shapePreviewCtx.closePath();
|
|
this.shapePreviewCtx.stroke();
|
|
}
|
|
// Draw feather preview
|
|
if (featherValue > 0) {
|
|
const allFeatherContours = this._calculatePreviewPointsScreen(allContours, -featherValue, viewport.zoom);
|
|
this.shapePreviewCtx.strokeStyle = '#4A9EFF';
|
|
this.shapePreviewCtx.lineWidth = 1;
|
|
this.shapePreviewCtx.setLineDash([3, 5]);
|
|
this.shapePreviewCtx.globalAlpha = 0.6;
|
|
for (const contour of allFeatherContours) {
|
|
if (contour.length < 2)
|
|
continue;
|
|
this.shapePreviewCtx.beginPath();
|
|
this.shapePreviewCtx.moveTo(contour[0].x, contour[0].y);
|
|
for (let i = 1; i < contour.length; i++) {
|
|
this.shapePreviewCtx.lineTo(contour[i].x, contour[i].y);
|
|
}
|
|
this.shapePreviewCtx.closePath();
|
|
this.shapePreviewCtx.stroke();
|
|
}
|
|
}
|
|
log.debug(`Shape preview shown with expansion: ${expansionValue}px, feather: ${featherValue}px at bounds (${bounds.x}, ${bounds.y})`);
|
|
}
|
|
/**
|
|
* Hide shape preview and switch back to normal mode
|
|
*/
|
|
hideShapePreview() {
|
|
this.isPreviewMode = false;
|
|
this.shapePreviewVisible = false;
|
|
this.clearShapePreview();
|
|
this.shapePreviewCanvas.style.display = 'none';
|
|
log.debug("Shape preview hidden");
|
|
}
|
|
/**
|
|
* Clear shape preview canvas
|
|
*/
|
|
clearShapePreview() {
|
|
if (this.shapePreviewCtx) {
|
|
this.shapePreviewCtx.clearRect(0, 0, this.shapePreviewCanvas.width, this.shapePreviewCanvas.height);
|
|
}
|
|
}
|
|
/**
|
|
* Update shape preview canvas position and scale when viewport changes
|
|
* This ensures the preview stays synchronized with the world coordinates
|
|
*/
|
|
updateShapePreviewPosition() {
|
|
if (!this.shapePreviewCanvas.parentElement || !this.shapePreviewVisible) {
|
|
return;
|
|
}
|
|
const viewport = this.canvasInstance.viewport;
|
|
const bufferSize = 300;
|
|
// Calculate world position (output area + buffer)
|
|
const previewX = -bufferSize; // World coordinates
|
|
const previewY = -bufferSize;
|
|
// Convert to screen coordinates
|
|
const screenX = (previewX - viewport.x) * viewport.zoom;
|
|
const screenY = (previewY - viewport.y) * viewport.zoom;
|
|
// Update position and scale
|
|
this.shapePreviewCanvas.style.left = `${screenX}px`;
|
|
this.shapePreviewCanvas.style.top = `${screenY}px`;
|
|
const previewWidth = this.canvasInstance.width + (bufferSize * 2);
|
|
const previewHeight = this.canvasInstance.height + (bufferSize * 2);
|
|
this.shapePreviewCanvas.style.width = `${previewWidth * viewport.zoom}px`;
|
|
this.shapePreviewCanvas.style.height = `${previewHeight * viewport.zoom}px`;
|
|
}
|
|
/**
|
|
* Ultra-fast dilation using Distance Transform + thresholding (Manhattan distance for speed)
|
|
*/
|
|
_fastDilateDT(mask, width, height, radius) {
|
|
const INF = 1e9;
|
|
const dist = new Float32Array(width * height);
|
|
// 1. Initialize: 0 for foreground, INF for background
|
|
for (let i = 0; i < width * height; ++i) {
|
|
dist[i] = mask[i] ? 0 : INF;
|
|
}
|
|
// 2. Forward pass: top-left -> bottom-right
|
|
for (let y = 0; y < height; ++y) {
|
|
for (let x = 0; x < width; ++x) {
|
|
const i = y * width + x;
|
|
if (mask[i])
|
|
continue;
|
|
if (x > 0)
|
|
dist[i] = Math.min(dist[i], dist[y * width + (x - 1)] + 1);
|
|
if (y > 0)
|
|
dist[i] = Math.min(dist[i], dist[(y - 1) * width + x] + 1);
|
|
}
|
|
}
|
|
// 3. Backward pass: bottom-right -> top-left
|
|
for (let y = height - 1; y >= 0; --y) {
|
|
for (let x = width - 1; x >= 0; --x) {
|
|
const i = y * width + x;
|
|
if (mask[i])
|
|
continue;
|
|
if (x < width - 1)
|
|
dist[i] = Math.min(dist[i], dist[y * width + (x + 1)] + 1);
|
|
if (y < height - 1)
|
|
dist[i] = Math.min(dist[i], dist[(y + 1) * width + x] + 1);
|
|
}
|
|
}
|
|
// 4. Thresholding: if distance <= radius, it's part of the expanded mask
|
|
const expanded = new Uint8Array(width * height);
|
|
for (let i = 0; i < width * height; ++i) {
|
|
expanded[i] = dist[i] <= radius ? 1 : 0;
|
|
}
|
|
return expanded;
|
|
}
|
|
/**
|
|
* Ultra-fast erosion using Distance Transform + thresholding
|
|
*/
|
|
_fastErodeDT(mask, width, height, radius) {
|
|
const INF = 1e9;
|
|
const dist = new Float32Array(width * height);
|
|
// 1. Initialize: 0 for background, INF for foreground (inverse of dilation)
|
|
for (let i = 0; i < width * height; ++i) {
|
|
dist[i] = mask[i] ? INF : 0;
|
|
}
|
|
// 2. Forward pass: top-left -> bottom-right
|
|
for (let y = 0; y < height; ++y) {
|
|
for (let x = 0; x < width; ++x) {
|
|
const i = y * width + x;
|
|
if (!mask[i])
|
|
continue;
|
|
if (x > 0)
|
|
dist[i] = Math.min(dist[i], dist[y * width + (x - 1)] + 1);
|
|
if (y > 0)
|
|
dist[i] = Math.min(dist[i], dist[(y - 1) * width + x] + 1);
|
|
}
|
|
}
|
|
// 3. Backward pass: bottom-right -> top-left
|
|
for (let y = height - 1; y >= 0; --y) {
|
|
for (let x = width - 1; x >= 0; --x) {
|
|
const i = y * width + x;
|
|
if (!mask[i])
|
|
continue;
|
|
if (x < width - 1)
|
|
dist[i] = Math.min(dist[i], dist[y * width + (x + 1)] + 1);
|
|
if (y < height - 1)
|
|
dist[i] = Math.min(dist[i], dist[(y + 1) * width + x] + 1);
|
|
}
|
|
}
|
|
// 4. Thresholding: if distance > radius, it's part of the eroded mask
|
|
const eroded = new Uint8Array(width * height);
|
|
for (let i = 0; i < width * height; ++i) {
|
|
eroded[i] = dist[i] > radius ? 1 : 0;
|
|
}
|
|
return eroded;
|
|
}
|
|
/**
|
|
* Calculate preview points using screen coordinates for pinned canvas.
|
|
* This version now accepts multiple contours and returns multiple contours.
|
|
*/
|
|
_calculatePreviewPointsScreen(contours, expansionValue, zoom) {
|
|
if (contours.length === 0 || expansionValue === 0)
|
|
return contours;
|
|
const width = this.canvasInstance.canvas.width;
|
|
const height = this.canvasInstance.canvas.height;
|
|
const tempCanvas = document.createElement('canvas');
|
|
tempCanvas.width = width;
|
|
tempCanvas.height = height;
|
|
const tempCtx = tempCanvas.getContext('2d', { willReadFrequently: true });
|
|
// Draw all contours to create the initial mask
|
|
tempCtx.fillStyle = 'white';
|
|
for (const points of contours) {
|
|
if (points.length < 3)
|
|
continue;
|
|
tempCtx.beginPath();
|
|
tempCtx.moveTo(points[0].x, points[0].y);
|
|
for (let i = 1; i < points.length; i++) {
|
|
tempCtx.lineTo(points[i].x, points[i].y);
|
|
}
|
|
tempCtx.closePath();
|
|
tempCtx.fill('evenodd'); // Use evenodd to handle holes correctly
|
|
}
|
|
const maskImage = tempCtx.getImageData(0, 0, width, height);
|
|
const binaryData = new Uint8Array(width * height);
|
|
for (let i = 0; i < binaryData.length; i++) {
|
|
binaryData[i] = maskImage.data[i * 4] > 0 ? 1 : 0;
|
|
}
|
|
let resultMask;
|
|
const scaledExpansionValue = Math.round(Math.abs(expansionValue * zoom));
|
|
if (expansionValue >= 0) {
|
|
resultMask = this._fastDilateDT(binaryData, width, height, scaledExpansionValue);
|
|
}
|
|
else {
|
|
resultMask = this._fastErodeDT(binaryData, width, height, scaledExpansionValue);
|
|
}
|
|
// Extract all contours (outer and inner) from the resulting mask
|
|
const allResultContours = this._traceAllContours(resultMask, width, height);
|
|
return allResultContours.length > 0 ? allResultContours : contours;
|
|
}
|
|
/**
|
|
* Calculate preview points in world coordinates using morphological operations
|
|
* This version works directly with mask canvas coordinates
|
|
*/
|
|
/**
|
|
* Traces all contours (outer and inner islands) from a binary mask.
|
|
* @returns An array of contours, where each contour is an array of points.
|
|
*/
|
|
_traceAllContours(mask, width, height) {
|
|
const contours = [];
|
|
const visited = new Uint8Array(mask.length); // Keep track of visited pixels
|
|
for (let y = 1; y < height - 1; y++) {
|
|
for (let x = 1; x < width - 1; x++) {
|
|
const idx = y * width + x;
|
|
// Check for a potential starting point: a foreground pixel that hasn't been visited
|
|
// and is on a boundary (next to a background pixel).
|
|
if (mask[idx] === 1 && visited[idx] === 0) {
|
|
// Check if it's a boundary pixel
|
|
const isBoundary = mask[idx - 1] === 0 ||
|
|
mask[idx + 1] === 0 ||
|
|
mask[idx - width] === 0 ||
|
|
mask[idx + width] === 0;
|
|
if (isBoundary) {
|
|
// Found a new contour, let's trace it.
|
|
const contour = this._traceSingleContour({ x, y }, mask, width, height, visited);
|
|
if (contour.length > 2) {
|
|
// --- Path Simplification ---
|
|
const simplifiedContour = [];
|
|
const simplificationFactor = Math.max(1, Math.floor(contour.length / 200));
|
|
for (let i = 0; i < contour.length; i += simplificationFactor) {
|
|
simplifiedContour.push(contour[i]);
|
|
}
|
|
contours.push(simplifiedContour);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return contours;
|
|
}
|
|
/**
|
|
* Traces a single contour from a starting point using Moore-Neighbor algorithm.
|
|
*/
|
|
_traceSingleContour(startPoint, mask, width, height, visited) {
|
|
const contour = [];
|
|
let { x, y } = startPoint;
|
|
// Neighbor checking order (clockwise)
|
|
const neighbors = [
|
|
{ dx: 0, dy: -1 }, // N
|
|
{ dx: 1, dy: -1 }, // NE
|
|
{ dx: 1, dy: 0 }, // E
|
|
{ dx: 1, dy: 1 }, // SE
|
|
{ dx: 0, dy: 1 }, // S
|
|
{ dx: -1, dy: 1 }, // SW
|
|
{ dx: -1, dy: 0 }, // W
|
|
{ dx: -1, dy: -1 } // NW
|
|
];
|
|
let initialNeighborIndex = 0;
|
|
do {
|
|
let foundNext = false;
|
|
for (let i = 0; i < 8; i++) {
|
|
const neighborIndex = (initialNeighborIndex + i) % 8;
|
|
const nx = x + neighbors[neighborIndex].dx;
|
|
const ny = y + neighbors[neighborIndex].dy;
|
|
const nIdx = ny * width + nx;
|
|
if (nx >= 0 && nx < width && ny >= 0 && ny < height && mask[nIdx] === 1) {
|
|
contour.push({ x, y });
|
|
visited[y * width + x] = 1; // Mark current point as visited
|
|
x = nx;
|
|
y = ny;
|
|
initialNeighborIndex = (neighborIndex + 5) % 8;
|
|
foundNext = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!foundNext)
|
|
break; // End if no next point found
|
|
} while (x !== startPoint.x || y !== startPoint.y);
|
|
return contour;
|
|
}
|
|
clear() {
|
|
// Clear all mask chunks instead of just the active canvas
|
|
this.clearAllMaskChunks();
|
|
// Update active mask canvas to reflect the cleared state
|
|
this.updateActiveMaskCanvas();
|
|
if (this.isActive) {
|
|
this.canvasInstance.canvasState.saveMaskState();
|
|
}
|
|
// Trigger render to show the cleared mask
|
|
this.canvasInstance.render();
|
|
log.info("Cleared all mask data from all chunks");
|
|
}
|
|
getMask() {
|
|
// Return the current active mask canvas which shows all chunks
|
|
// Only update if there are pending changes to avoid unnecessary redraws
|
|
if (this.activeMaskNeedsUpdate) {
|
|
this.updateActiveMaskCanvas();
|
|
this.activeMaskNeedsUpdate = false;
|
|
}
|
|
return this.activeMaskCanvas;
|
|
}
|
|
resize(width, height) {
|
|
this.initPreviewCanvas();
|
|
const oldMask = this.maskCanvas;
|
|
const oldX = this.x;
|
|
const oldY = this.y;
|
|
const oldWidth = oldMask.width;
|
|
const oldHeight = oldMask.height;
|
|
const isIncreasingWidth = width > this.canvasInstance.width;
|
|
const isIncreasingHeight = height > this.canvasInstance.height;
|
|
this.activeMaskCanvas = document.createElement('canvas');
|
|
const extraSpace = 2000;
|
|
const newWidth = isIncreasingWidth ? width + extraSpace : Math.max(oldWidth, width + extraSpace);
|
|
const newHeight = isIncreasingHeight ? height + extraSpace : Math.max(oldHeight, height + extraSpace);
|
|
this.activeMaskCanvas.width = newWidth;
|
|
this.activeMaskCanvas.height = newHeight;
|
|
const newMaskCtx = this.activeMaskCanvas.getContext('2d', { willReadFrequently: true });
|
|
if (!newMaskCtx) {
|
|
throw new Error("Failed to get 2D context for new mask canvas");
|
|
}
|
|
this.activeMaskCtx = newMaskCtx;
|
|
if (oldMask.width > 0 && oldMask.height > 0) {
|
|
const offsetX = this.x - oldX;
|
|
const offsetY = this.y - oldY;
|
|
this.activeMaskCtx.drawImage(oldMask, offsetX, offsetY);
|
|
log.debug(`Preserved mask content with offset (${offsetX}, ${offsetY})`);
|
|
}
|
|
log.info(`Mask canvas resized to ${this.activeMaskCanvas.width}x${this.activeMaskCanvas.height}, position (${this.x}, ${this.y})`);
|
|
log.info(`Canvas size change: width ${isIncreasingWidth ? 'increased' : 'decreased'}, height ${isIncreasingHeight ? 'increased' : 'decreased'}`);
|
|
}
|
|
/**
|
|
* Updates mask canvas to ensure it covers the current output area
|
|
* This should be called when output area position or size changes
|
|
* Now uses chunked system - just updates the active mask canvas
|
|
*/
|
|
updateMaskCanvasForOutputArea() {
|
|
log.info(`Updating chunked mask system for output area at (${this.canvasInstance.outputAreaBounds.x}, ${this.canvasInstance.outputAreaBounds.y})`);
|
|
// Simply update the active mask canvas to cover the new output area
|
|
// All existing chunks are preserved in the maskChunks Map
|
|
this.updateActiveMaskCanvas();
|
|
log.info(`Chunked mask system updated - ${this.maskChunks.size} chunks preserved`);
|
|
}
|
|
toggleOverlayVisibility() {
|
|
this.isOverlayVisible = !this.isOverlayVisible;
|
|
log.info(`Mask overlay visibility toggled to: ${this.isOverlayVisible}`);
|
|
}
|
|
setMask(image) {
|
|
// Clear existing mask chunks in the output area first
|
|
const bounds = this.canvasInstance.outputAreaBounds;
|
|
this.clearMaskInArea(bounds.x, bounds.y, image.width, image.height);
|
|
// Add the new mask using the chunk system
|
|
this.addMask(image);
|
|
log.info(`MaskTool set new mask using chunk system at bounds (${bounds.x}, ${bounds.y})`);
|
|
}
|
|
/**
|
|
* Clears mask data in a specific area by clearing affected chunks
|
|
*/
|
|
clearMaskInArea(x, y, width, height) {
|
|
const chunkMinX = Math.floor(x / this.chunkSize);
|
|
const chunkMinY = Math.floor(y / this.chunkSize);
|
|
const chunkMaxX = Math.floor((x + width) / this.chunkSize);
|
|
const chunkMaxY = Math.floor((y + height) / this.chunkSize);
|
|
// Clear all affected chunks
|
|
for (let chunkY = chunkMinY; chunkY <= chunkMaxY; chunkY++) {
|
|
for (let chunkX = chunkMinX; chunkX <= chunkMaxX; chunkX++) {
|
|
const chunkKey = `${chunkX},${chunkY}`;
|
|
const chunk = this.maskChunks.get(chunkKey);
|
|
if (chunk && !chunk.isEmpty) {
|
|
this.clearMaskFromChunk(chunk, x, y, width, height);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/**
|
|
* Clears mask data from a specific chunk in a given area
|
|
*/
|
|
clearMaskFromChunk(chunk, clearX, clearY, clearWidth, clearHeight) {
|
|
// Calculate the intersection of the clear area with this chunk
|
|
const chunkLeft = chunk.x;
|
|
const chunkTop = chunk.y;
|
|
const chunkRight = chunk.x + this.chunkSize;
|
|
const chunkBottom = chunk.y + this.chunkSize;
|
|
const clearLeft = clearX;
|
|
const clearTop = clearY;
|
|
const clearRight = clearX + clearWidth;
|
|
const clearBottom = clearY + clearHeight;
|
|
// Find intersection
|
|
const intersectLeft = Math.max(chunkLeft, clearLeft);
|
|
const intersectTop = Math.max(chunkTop, clearTop);
|
|
const intersectRight = Math.min(chunkRight, clearRight);
|
|
const intersectBottom = Math.min(chunkBottom, clearBottom);
|
|
// Check if there's actually an intersection
|
|
if (intersectLeft >= intersectRight || intersectTop >= intersectBottom) {
|
|
return; // No intersection
|
|
}
|
|
// Calculate destination coordinates on the chunk
|
|
const destX = intersectLeft - chunkLeft;
|
|
const destY = intersectTop - chunkTop;
|
|
const destWidth = intersectRight - intersectLeft;
|
|
const destHeight = intersectBottom - intersectTop;
|
|
// Clear the area on this chunk
|
|
chunk.ctx.clearRect(destX, destY, destWidth, destHeight);
|
|
// Check if the entire chunk is now empty
|
|
const imageData = chunk.ctx.getImageData(0, 0, this.chunkSize, this.chunkSize);
|
|
const data = imageData.data;
|
|
let hasData = false;
|
|
for (let i = 3; i < data.length; i += 4) { // Check alpha channel
|
|
if (data[i] > 0) {
|
|
hasData = true;
|
|
break;
|
|
}
|
|
}
|
|
chunk.isEmpty = !hasData;
|
|
chunk.isDirty = true;
|
|
log.debug(`Cleared area from chunk (${Math.floor(chunk.x / this.chunkSize)}, ${Math.floor(chunk.y / this.chunkSize)}) at local position (${destX}, ${destY})`);
|
|
}
|
|
/**
|
|
* Clears all mask chunks - used by the clear() function
|
|
*/
|
|
clearAllMaskChunks() {
|
|
// Clear all existing chunks
|
|
for (const [chunkKey, chunk] of this.maskChunks) {
|
|
chunk.ctx.clearRect(0, 0, this.chunkSize, this.chunkSize);
|
|
chunk.isEmpty = true;
|
|
chunk.isDirty = true;
|
|
}
|
|
// Optionally remove all chunks from memory to free up resources
|
|
this.maskChunks.clear();
|
|
this.activeChunkBounds = null;
|
|
log.info(`Cleared all ${this.maskChunks.size} mask chunks`);
|
|
}
|
|
addMask(image) {
|
|
// Add mask to chunks system instead of directly to active canvas
|
|
const bounds = this.canvasInstance.outputAreaBounds;
|
|
// Calculate which chunks this mask will affect
|
|
const maskLeft = bounds.x;
|
|
const maskTop = bounds.y;
|
|
const maskRight = bounds.x + image.width;
|
|
const maskBottom = bounds.y + image.height;
|
|
const chunkMinX = Math.floor(maskLeft / this.chunkSize);
|
|
const chunkMinY = Math.floor(maskTop / this.chunkSize);
|
|
const chunkMaxX = Math.floor(maskRight / this.chunkSize);
|
|
const chunkMaxY = Math.floor(maskBottom / this.chunkSize);
|
|
// First, deactivate all chunks
|
|
for (const chunk of this.maskChunks.values()) {
|
|
chunk.isActive = false;
|
|
}
|
|
// Add mask to all affected chunks and activate them so user can see the mask being applied
|
|
for (let chunkY = chunkMinY; chunkY <= chunkMaxY; chunkY++) {
|
|
for (let chunkX = chunkMinX; chunkX <= chunkMaxX; chunkX++) {
|
|
const chunk = this.getChunkForPosition(chunkX * this.chunkSize, chunkY * this.chunkSize);
|
|
this.addMaskToChunk(chunk, image, bounds);
|
|
// Activate this chunk so user can see the mask being applied
|
|
chunk.isActive = true;
|
|
chunk.lastAccessTime = Date.now();
|
|
}
|
|
}
|
|
// Also activate surrounding chunks for better visibility (3x3 grid around mask area)
|
|
const centerChunkX = Math.floor((maskLeft + maskRight) / 2 / this.chunkSize);
|
|
const centerChunkY = Math.floor((maskTop + maskBottom) / 2 / this.chunkSize);
|
|
for (let dy = -this.activeChunkRadius; dy <= this.activeChunkRadius; dy++) {
|
|
for (let dx = -this.activeChunkRadius; dx <= this.activeChunkRadius; dx++) {
|
|
const chunkX = centerChunkX + dx;
|
|
const chunkY = centerChunkY + dy;
|
|
const chunk = this.getChunkForPosition(chunkX * this.chunkSize, chunkY * this.chunkSize);
|
|
chunk.isActive = true;
|
|
chunk.lastAccessTime = Date.now();
|
|
}
|
|
}
|
|
// Update active canvas to show the new mask with activated chunks
|
|
this.updateActiveMaskCanvas(true); // Force full update to show all chunks including newly activated ones
|
|
if (this.onStateChange) {
|
|
this.onStateChange();
|
|
}
|
|
this.canvasInstance.render();
|
|
const activatedChunks = Array.from(this.maskChunks.values()).filter(chunk => chunk.isActive).length;
|
|
log.info(`MaskTool added SAM mask to chunks covering bounds (${bounds.x}, ${bounds.y}) to (${maskRight}, ${maskBottom}) and activated ${activatedChunks} chunks for visibility`);
|
|
}
|
|
/**
|
|
* Adds a mask image to a specific chunk
|
|
*/
|
|
addMaskToChunk(chunk, maskImage, bounds) {
|
|
// Calculate the intersection of the mask with this chunk
|
|
const chunkLeft = chunk.x;
|
|
const chunkTop = chunk.y;
|
|
const chunkRight = chunk.x + this.chunkSize;
|
|
const chunkBottom = chunk.y + this.chunkSize;
|
|
const maskLeft = bounds.x;
|
|
const maskTop = bounds.y;
|
|
const maskRight = bounds.x + maskImage.width;
|
|
const maskBottom = bounds.y + maskImage.height;
|
|
// Find intersection
|
|
const intersectLeft = Math.max(chunkLeft, maskLeft);
|
|
const intersectTop = Math.max(chunkTop, maskTop);
|
|
const intersectRight = Math.min(chunkRight, maskRight);
|
|
const intersectBottom = Math.min(chunkBottom, maskBottom);
|
|
// Check if there's actually an intersection
|
|
if (intersectLeft >= intersectRight || intersectTop >= intersectBottom) {
|
|
return; // No intersection
|
|
}
|
|
// Calculate source coordinates on the mask image
|
|
const srcX = intersectLeft - maskLeft;
|
|
const srcY = intersectTop - maskTop;
|
|
const srcWidth = intersectRight - intersectLeft;
|
|
const srcHeight = intersectBottom - intersectTop;
|
|
// Calculate destination coordinates on the chunk
|
|
const destX = intersectLeft - chunkLeft;
|
|
const destY = intersectTop - chunkTop;
|
|
// Draw the mask portion onto this chunk
|
|
chunk.ctx.globalCompositeOperation = 'source-over';
|
|
chunk.ctx.drawImage(maskImage, srcX, srcY, srcWidth, srcHeight, // Source rectangle
|
|
destX, destY, srcWidth, srcHeight // Destination rectangle
|
|
);
|
|
// Mark chunk as dirty and not empty
|
|
chunk.isDirty = true;
|
|
chunk.isEmpty = false;
|
|
log.debug(`Added mask to chunk (${Math.floor(chunk.x / this.chunkSize)}, ${Math.floor(chunk.y / this.chunkSize)}) at local position (${destX}, ${destY})`);
|
|
}
|
|
/**
|
|
* Applies a mask canvas to the chunked system at a specific world position
|
|
*/
|
|
applyMaskCanvasToChunks(maskCanvas, worldX, worldY) {
|
|
// Calculate which chunks this mask will affect
|
|
const maskLeft = worldX;
|
|
const maskTop = worldY;
|
|
const maskRight = worldX + maskCanvas.width;
|
|
const maskBottom = worldY + maskCanvas.height;
|
|
const chunkMinX = Math.floor(maskLeft / this.chunkSize);
|
|
const chunkMinY = Math.floor(maskTop / this.chunkSize);
|
|
const chunkMaxX = Math.floor(maskRight / this.chunkSize);
|
|
const chunkMaxY = Math.floor(maskBottom / this.chunkSize);
|
|
// First, clear the area where the mask will be applied
|
|
this.clearMaskInArea(maskLeft, maskTop, maskCanvas.width, maskCanvas.height);
|
|
// Apply mask to all affected chunks
|
|
for (let chunkY = chunkMinY; chunkY <= chunkMaxY; chunkY++) {
|
|
for (let chunkX = chunkMinX; chunkX <= chunkMaxX; chunkX++) {
|
|
const chunk = this.getChunkForPosition(chunkX * this.chunkSize, chunkY * this.chunkSize);
|
|
this.applyMaskCanvasToChunk(chunk, maskCanvas, worldX, worldY);
|
|
}
|
|
}
|
|
log.info(`Applied mask canvas to chunks covering area (${maskLeft}, ${maskTop}) to (${maskRight}, ${maskBottom})`);
|
|
}
|
|
/**
|
|
* Removes a mask canvas from the chunked system at a specific world position
|
|
*/
|
|
removeMaskCanvasFromChunks(maskCanvas, worldX, worldY) {
|
|
// Calculate which chunks this mask will affect
|
|
const maskLeft = worldX;
|
|
const maskTop = worldY;
|
|
const maskRight = worldX + maskCanvas.width;
|
|
const maskBottom = worldY + maskCanvas.height;
|
|
const chunkMinX = Math.floor(maskLeft / this.chunkSize);
|
|
const chunkMinY = Math.floor(maskTop / this.chunkSize);
|
|
const chunkMaxX = Math.floor(maskRight / this.chunkSize);
|
|
const chunkMaxY = Math.floor(maskBottom / this.chunkSize);
|
|
// Remove mask from all affected chunks
|
|
for (let chunkY = chunkMinY; chunkY <= chunkMaxY; chunkY++) {
|
|
for (let chunkX = chunkMinX; chunkX <= chunkMaxX; chunkX++) {
|
|
const chunk = this.getChunkForPosition(chunkX * this.chunkSize, chunkY * this.chunkSize);
|
|
this.removeMaskCanvasFromChunk(chunk, maskCanvas, worldX, worldY);
|
|
}
|
|
}
|
|
log.info(`Removed mask canvas from chunks covering area (${maskLeft}, ${maskTop}) to (${maskRight}, ${maskBottom})`);
|
|
}
|
|
/**
|
|
* Removes a mask canvas from a specific chunk using destination-out composition
|
|
*/
|
|
removeMaskCanvasFromChunk(chunk, maskCanvas, maskWorldX, maskWorldY) {
|
|
// Calculate the intersection of the mask with this chunk
|
|
const chunkLeft = chunk.x;
|
|
const chunkTop = chunk.y;
|
|
const chunkRight = chunk.x + this.chunkSize;
|
|
const chunkBottom = chunk.y + this.chunkSize;
|
|
const maskLeft = maskWorldX;
|
|
const maskTop = maskWorldY;
|
|
const maskRight = maskWorldX + maskCanvas.width;
|
|
const maskBottom = maskWorldY + maskCanvas.height;
|
|
// Find intersection
|
|
const intersectLeft = Math.max(chunkLeft, maskLeft);
|
|
const intersectTop = Math.max(chunkTop, maskTop);
|
|
const intersectRight = Math.min(chunkRight, maskRight);
|
|
const intersectBottom = Math.min(chunkBottom, maskBottom);
|
|
// Check if there's actually an intersection
|
|
if (intersectLeft >= intersectRight || intersectTop >= intersectBottom) {
|
|
return; // No intersection
|
|
}
|
|
// Calculate source coordinates on the mask canvas
|
|
const srcX = intersectLeft - maskLeft;
|
|
const srcY = intersectTop - maskTop;
|
|
const srcWidth = intersectRight - intersectLeft;
|
|
const srcHeight = intersectBottom - intersectTop;
|
|
// Calculate destination coordinates on the chunk
|
|
const destX = intersectLeft - chunkLeft;
|
|
const destY = intersectTop - chunkTop;
|
|
// Use destination-out to remove the mask portion from this chunk
|
|
chunk.ctx.globalCompositeOperation = 'destination-out';
|
|
chunk.ctx.drawImage(maskCanvas, srcX, srcY, srcWidth, srcHeight, // Source rectangle
|
|
destX, destY, srcWidth, srcHeight // Destination rectangle
|
|
);
|
|
// Restore normal composition mode
|
|
chunk.ctx.globalCompositeOperation = 'source-over';
|
|
// Check if the chunk is now empty
|
|
const imageData = chunk.ctx.getImageData(0, 0, this.chunkSize, this.chunkSize);
|
|
const data = imageData.data;
|
|
let hasData = false;
|
|
for (let i = 3; i < data.length; i += 4) { // Check alpha channel
|
|
if (data[i] > 0) {
|
|
hasData = true;
|
|
break;
|
|
}
|
|
}
|
|
chunk.isEmpty = !hasData;
|
|
chunk.isDirty = true;
|
|
log.debug(`Removed mask canvas from chunk (${Math.floor(chunk.x / this.chunkSize)}, ${Math.floor(chunk.y / this.chunkSize)}) at local position (${destX}, ${destY})`);
|
|
}
|
|
/**
|
|
* Applies a mask canvas to a specific chunk
|
|
*/
|
|
applyMaskCanvasToChunk(chunk, maskCanvas, maskWorldX, maskWorldY) {
|
|
// Calculate the intersection of the mask with this chunk
|
|
const chunkLeft = chunk.x;
|
|
const chunkTop = chunk.y;
|
|
const chunkRight = chunk.x + this.chunkSize;
|
|
const chunkBottom = chunk.y + this.chunkSize;
|
|
const maskLeft = maskWorldX;
|
|
const maskTop = maskWorldY;
|
|
const maskRight = maskWorldX + maskCanvas.width;
|
|
const maskBottom = maskWorldY + maskCanvas.height;
|
|
// Find intersection
|
|
const intersectLeft = Math.max(chunkLeft, maskLeft);
|
|
const intersectTop = Math.max(chunkTop, maskTop);
|
|
const intersectRight = Math.min(chunkRight, maskRight);
|
|
const intersectBottom = Math.min(chunkBottom, maskBottom);
|
|
// Check if there's actually an intersection
|
|
if (intersectLeft >= intersectRight || intersectTop >= intersectBottom) {
|
|
return; // No intersection
|
|
}
|
|
// Calculate source coordinates on the mask canvas
|
|
const srcX = intersectLeft - maskLeft;
|
|
const srcY = intersectTop - maskTop;
|
|
const srcWidth = intersectRight - intersectLeft;
|
|
const srcHeight = intersectBottom - intersectTop;
|
|
// Calculate destination coordinates on the chunk
|
|
const destX = intersectLeft - chunkLeft;
|
|
const destY = intersectTop - chunkTop;
|
|
// Draw the mask portion onto this chunk
|
|
chunk.ctx.globalCompositeOperation = 'source-over';
|
|
chunk.ctx.drawImage(maskCanvas, srcX, srcY, srcWidth, srcHeight, // Source rectangle
|
|
destX, destY, srcWidth, srcHeight // Destination rectangle
|
|
);
|
|
// Mark chunk as dirty and not empty
|
|
chunk.isDirty = true;
|
|
chunk.isEmpty = false;
|
|
log.debug(`Applied mask canvas to chunk (${Math.floor(chunk.x / this.chunkSize)}, ${Math.floor(chunk.y / this.chunkSize)}) at local position (${destX}, ${destY})`);
|
|
}
|
|
applyShapeMask(saveState = true) {
|
|
if (!this.canvasInstance.outputAreaShape?.points || this.canvasInstance.outputAreaShape.points.length < 3) {
|
|
log.warn("Cannot apply shape mask: shape is not defined or has too few points.");
|
|
return;
|
|
}
|
|
if (saveState) {
|
|
this.canvasInstance.canvasState.saveMaskState();
|
|
}
|
|
const shape = this.canvasInstance.outputAreaShape;
|
|
const bounds = this.canvasInstance.outputAreaBounds;
|
|
// Calculate shape points in world coordinates
|
|
// Shape points are relative to the output area bounds
|
|
const worldShapePoints = shape.points.map(p => ({
|
|
x: bounds.x + p.x,
|
|
y: bounds.y + p.y
|
|
}));
|
|
// Create the shape mask canvas
|
|
let shapeMaskCanvas;
|
|
// Check if we need expansion or feathering
|
|
const needsExpansion = this.canvasInstance.shapeMaskExpansion && this.canvasInstance.shapeMaskExpansionValue !== 0;
|
|
const needsFeather = this.canvasInstance.shapeMaskFeather && this.canvasInstance.shapeMaskFeatherValue > 0;
|
|
// Create a temporary canvas large enough to contain the shape and any expansion
|
|
const maxExpansion = Math.max(300, Math.abs(this.canvasInstance.shapeMaskExpansionValue || 0));
|
|
const tempCanvasWidth = bounds.width + (maxExpansion * 2);
|
|
const tempCanvasHeight = bounds.height + (maxExpansion * 2);
|
|
const tempOffsetX = maxExpansion;
|
|
const tempOffsetY = maxExpansion;
|
|
// Adjust shape points for the temporary canvas
|
|
const tempShapePoints = worldShapePoints.map(p => ({
|
|
x: p.x - bounds.x + tempOffsetX,
|
|
y: p.y - bounds.y + tempOffsetY
|
|
}));
|
|
if (!needsExpansion && !needsFeather) {
|
|
// Simple case: just draw the original shape
|
|
shapeMaskCanvas = document.createElement('canvas');
|
|
shapeMaskCanvas.width = tempCanvasWidth;
|
|
shapeMaskCanvas.height = tempCanvasHeight;
|
|
const ctx = shapeMaskCanvas.getContext('2d', { willReadFrequently: true });
|
|
ctx.fillStyle = 'white';
|
|
ctx.beginPath();
|
|
ctx.moveTo(tempShapePoints[0].x, tempShapePoints[0].y);
|
|
for (let i = 1; i < tempShapePoints.length; i++) {
|
|
ctx.lineTo(tempShapePoints[i].x, tempShapePoints[i].y);
|
|
}
|
|
ctx.closePath();
|
|
ctx.fill('evenodd');
|
|
}
|
|
else if (needsExpansion && !needsFeather) {
|
|
// Expansion only
|
|
shapeMaskCanvas = this._createExpandedMaskCanvas(tempShapePoints, this.canvasInstance.shapeMaskExpansionValue, tempCanvasWidth, tempCanvasHeight);
|
|
}
|
|
else if (!needsExpansion && needsFeather) {
|
|
// Feather only
|
|
shapeMaskCanvas = this._createFeatheredMaskCanvas(tempShapePoints, this.canvasInstance.shapeMaskFeatherValue, tempCanvasWidth, tempCanvasHeight);
|
|
}
|
|
else {
|
|
// Both expansion and feather
|
|
const expandedMaskCanvas = this._createExpandedMaskCanvas(tempShapePoints, this.canvasInstance.shapeMaskExpansionValue, tempCanvasWidth, tempCanvasHeight);
|
|
const tempCtx = expandedMaskCanvas.getContext('2d', { willReadFrequently: true });
|
|
const expandedImageData = tempCtx.getImageData(0, 0, expandedMaskCanvas.width, expandedMaskCanvas.height);
|
|
shapeMaskCanvas = this._createFeatheredMaskFromImageData(expandedImageData, this.canvasInstance.shapeMaskFeatherValue, tempCanvasWidth, tempCanvasHeight);
|
|
}
|
|
// Now apply the shape mask to the chunked system
|
|
this.applyMaskCanvasToChunks(shapeMaskCanvas, bounds.x - tempOffsetX, bounds.y - tempOffsetY);
|
|
// Update the active mask canvas to show the changes
|
|
this.updateActiveMaskCanvas();
|
|
if (this.onStateChange) {
|
|
this.onStateChange();
|
|
}
|
|
this.canvasInstance.render();
|
|
log.info(`Applied shape mask to chunks with expansion: ${needsExpansion}, feather: ${needsFeather}.`);
|
|
}
|
|
/**
|
|
* Removes mask in the area of the custom output area shape. This must use a hard-edged
|
|
* shape to correctly erase any feathered "glow" that might have been applied.
|
|
* Now works with the chunked mask system.
|
|
*/
|
|
removeShapeMask() {
|
|
if (!this.canvasInstance.outputAreaShape?.points || this.canvasInstance.outputAreaShape.points.length < 3) {
|
|
log.warn("Shape has insufficient points for mask removal");
|
|
return;
|
|
}
|
|
this.canvasInstance.canvasState.saveMaskState();
|
|
const shape = this.canvasInstance.outputAreaShape;
|
|
const bounds = this.canvasInstance.outputAreaBounds;
|
|
// Calculate shape points in world coordinates (same as applyShapeMask)
|
|
const worldShapePoints = shape.points.map(p => ({
|
|
x: bounds.x + p.x,
|
|
y: bounds.y + p.y
|
|
}));
|
|
// Check if we need to account for expansion when removing
|
|
const needsExpansion = this.canvasInstance.shapeMaskExpansion && this.canvasInstance.shapeMaskExpansionValue !== 0;
|
|
// Create a removal mask canvas - always hard-edged to ensure complete removal
|
|
let removalMaskCanvas;
|
|
// Create a temporary canvas large enough to contain the shape and any expansion
|
|
const maxExpansion = Math.max(300, Math.abs(this.canvasInstance.shapeMaskExpansionValue || 0));
|
|
const tempCanvasWidth = bounds.width + (maxExpansion * 2);
|
|
const tempCanvasHeight = bounds.height + (maxExpansion * 2);
|
|
const tempOffsetX = maxExpansion;
|
|
const tempOffsetY = maxExpansion;
|
|
// Adjust shape points for the temporary canvas
|
|
const tempShapePoints = worldShapePoints.map(p => ({
|
|
x: p.x - bounds.x + tempOffsetX,
|
|
y: p.y - bounds.y + tempOffsetY
|
|
}));
|
|
if (needsExpansion) {
|
|
// If expansion was active, remove the expanded area with a hard edge
|
|
removalMaskCanvas = this._createExpandedMaskCanvas(tempShapePoints, this.canvasInstance.shapeMaskExpansionValue, tempCanvasWidth, tempCanvasHeight);
|
|
}
|
|
else {
|
|
// If no expansion, just remove the base shape with a hard edge
|
|
removalMaskCanvas = document.createElement('canvas');
|
|
removalMaskCanvas.width = tempCanvasWidth;
|
|
removalMaskCanvas.height = tempCanvasHeight;
|
|
const ctx = removalMaskCanvas.getContext('2d', { willReadFrequently: true });
|
|
ctx.fillStyle = 'white';
|
|
ctx.beginPath();
|
|
ctx.moveTo(tempShapePoints[0].x, tempShapePoints[0].y);
|
|
for (let i = 1; i < tempShapePoints.length; i++) {
|
|
ctx.lineTo(tempShapePoints[i].x, tempShapePoints[i].y);
|
|
}
|
|
ctx.closePath();
|
|
ctx.fill('evenodd');
|
|
}
|
|
// Now remove the shape mask from the chunked system
|
|
this.removeMaskCanvasFromChunks(removalMaskCanvas, bounds.x - tempOffsetX, bounds.y - tempOffsetY);
|
|
// Update the active mask canvas to show the changes
|
|
this.updateActiveMaskCanvas();
|
|
if (this.onStateChange) {
|
|
this.onStateChange();
|
|
}
|
|
this.canvasInstance.render();
|
|
log.info(`Removed shape mask from chunks with expansion: ${needsExpansion}.`);
|
|
}
|
|
_createFeatheredMaskCanvas(points, featherRadius, width, height) {
|
|
// 1. Create a binary mask on a temporary canvas.
|
|
const binaryCanvas = document.createElement('canvas');
|
|
binaryCanvas.width = width;
|
|
binaryCanvas.height = height;
|
|
const binaryCtx = binaryCanvas.getContext('2d', { willReadFrequently: true });
|
|
binaryCtx.fillStyle = 'white';
|
|
binaryCtx.beginPath();
|
|
binaryCtx.moveTo(points[0].x, points[0].y);
|
|
for (let i = 1; i < points.length; i++) {
|
|
binaryCtx.lineTo(points[i].x, points[i].y);
|
|
}
|
|
binaryCtx.closePath();
|
|
binaryCtx.fill();
|
|
const maskImage = binaryCtx.getImageData(0, 0, width, height);
|
|
const binaryData = new Uint8Array(width * height);
|
|
for (let i = 0; i < binaryData.length; i++) {
|
|
binaryData[i] = maskImage.data[i * 4] > 0 ? 1 : 0; // 1 = inside, 0 = outside
|
|
}
|
|
// 2. Calculate the fast distance transform (from ImageAnalysis.ts approach).
|
|
const distanceMap = this._fastDistanceTransform(binaryData, width, height);
|
|
// Find the maximum distance to normalize
|
|
let maxDistance = 0;
|
|
for (let i = 0; i < distanceMap.length; i++) {
|
|
if (distanceMap[i] > maxDistance) {
|
|
maxDistance = distanceMap[i];
|
|
}
|
|
}
|
|
// 3. Create the final output canvas with the complete mask (solid + feather).
|
|
const outputCanvas = document.createElement('canvas');
|
|
outputCanvas.width = width;
|
|
outputCanvas.height = height;
|
|
const outputCtx = outputCanvas.getContext('2d', { willReadFrequently: true });
|
|
const outputData = outputCtx.createImageData(width, height);
|
|
// Use featherRadius as the threshold for the gradient
|
|
const threshold = Math.min(featherRadius, maxDistance);
|
|
for (let i = 0; i < distanceMap.length; i++) {
|
|
const distance = distanceMap[i];
|
|
const originalAlpha = maskImage.data[i * 4 + 3];
|
|
if (originalAlpha === 0) {
|
|
// Transparent pixels remain transparent
|
|
outputData.data[i * 4] = 255;
|
|
outputData.data[i * 4 + 1] = 255;
|
|
outputData.data[i * 4 + 2] = 255;
|
|
outputData.data[i * 4 + 3] = 0;
|
|
}
|
|
else if (distance <= threshold) {
|
|
// Edge area - apply gradient alpha (from edge inward)
|
|
const gradientValue = distance / threshold;
|
|
const alphaValue = Math.floor(gradientValue * 255);
|
|
outputData.data[i * 4] = 255;
|
|
outputData.data[i * 4 + 1] = 255;
|
|
outputData.data[i * 4 + 2] = 255;
|
|
outputData.data[i * 4 + 3] = alphaValue;
|
|
}
|
|
else {
|
|
// Inner area - full alpha (no blending effect)
|
|
outputData.data[i * 4] = 255;
|
|
outputData.data[i * 4 + 1] = 255;
|
|
outputData.data[i * 4 + 2] = 255;
|
|
outputData.data[i * 4 + 3] = 255;
|
|
}
|
|
}
|
|
outputCtx.putImageData(outputData, 0, 0);
|
|
return outputCanvas;
|
|
}
|
|
/**
|
|
* Fast distance transform using the simple two-pass algorithm from ImageAnalysis.ts
|
|
* Much faster than the complex Felzenszwalb algorithm
|
|
*/
|
|
_fastDistanceTransform(binaryMask, width, height) {
|
|
const distances = new Float32Array(width * height);
|
|
const infinity = width + height; // A value larger than any possible distance
|
|
// Initialize distances
|
|
for (let i = 0; i < width * height; i++) {
|
|
distances[i] = binaryMask[i] === 1 ? infinity : 0;
|
|
}
|
|
// Forward pass (top-left to bottom-right)
|
|
for (let y = 0; y < height; y++) {
|
|
for (let x = 0; x < width; x++) {
|
|
const idx = y * width + x;
|
|
if (distances[idx] > 0) {
|
|
let minDist = distances[idx];
|
|
// Check top neighbor
|
|
if (y > 0) {
|
|
minDist = Math.min(minDist, distances[(y - 1) * width + x] + 1);
|
|
}
|
|
// Check left neighbor
|
|
if (x > 0) {
|
|
minDist = Math.min(minDist, distances[y * width + (x - 1)] + 1);
|
|
}
|
|
// Check top-left diagonal
|
|
if (x > 0 && y > 0) {
|
|
minDist = Math.min(minDist, distances[(y - 1) * width + (x - 1)] + Math.sqrt(2));
|
|
}
|
|
// Check top-right diagonal
|
|
if (x < width - 1 && y > 0) {
|
|
minDist = Math.min(minDist, distances[(y - 1) * width + (x + 1)] + Math.sqrt(2));
|
|
}
|
|
distances[idx] = minDist;
|
|
}
|
|
}
|
|
}
|
|
// Backward pass (bottom-right to top-left)
|
|
for (let y = height - 1; y >= 0; y--) {
|
|
for (let x = width - 1; x >= 0; x--) {
|
|
const idx = y * width + x;
|
|
if (distances[idx] > 0) {
|
|
let minDist = distances[idx];
|
|
// Check bottom neighbor
|
|
if (y < height - 1) {
|
|
minDist = Math.min(minDist, distances[(y + 1) * width + x] + 1);
|
|
}
|
|
// Check right neighbor
|
|
if (x < width - 1) {
|
|
minDist = Math.min(minDist, distances[y * width + (x + 1)] + 1);
|
|
}
|
|
// Check bottom-right diagonal
|
|
if (x < width - 1 && y < height - 1) {
|
|
minDist = Math.min(minDist, distances[(y + 1) * width + (x + 1)] + Math.sqrt(2));
|
|
}
|
|
// Check bottom-left diagonal
|
|
if (x > 0 && y < height - 1) {
|
|
minDist = Math.min(minDist, distances[(y + 1) * width + (x - 1)] + Math.sqrt(2));
|
|
}
|
|
distances[idx] = minDist;
|
|
}
|
|
}
|
|
}
|
|
return distances;
|
|
}
|
|
/**
|
|
* Creates an expanded/contracted mask canvas using simple morphological operations
|
|
* This gives SHARP edges without smoothing, unlike distance transform
|
|
*/
|
|
_createExpandedMaskCanvas(points, expansionValue, width, height) {
|
|
// 1. Create a binary mask on a temporary canvas.
|
|
const binaryCanvas = document.createElement('canvas');
|
|
binaryCanvas.width = width;
|
|
binaryCanvas.height = height;
|
|
const binaryCtx = binaryCanvas.getContext('2d', { willReadFrequently: true });
|
|
binaryCtx.fillStyle = 'white';
|
|
binaryCtx.beginPath();
|
|
binaryCtx.moveTo(points[0].x, points[0].y);
|
|
for (let i = 1; i < points.length; i++) {
|
|
binaryCtx.lineTo(points[i].x, points[i].y);
|
|
}
|
|
binaryCtx.closePath();
|
|
binaryCtx.fill('evenodd'); // Use evenodd to handle holes correctly
|
|
const maskImage = binaryCtx.getImageData(0, 0, width, height);
|
|
const binaryData = new Uint8Array(width * height);
|
|
for (let i = 0; i < binaryData.length; i++) {
|
|
binaryData[i] = maskImage.data[i * 4] > 0 ? 1 : 0; // 1 = inside, 0 = outside
|
|
}
|
|
// 2. Apply fast morphological operations for sharp edges
|
|
let resultMask;
|
|
const absExpansionValue = Math.abs(expansionValue);
|
|
if (expansionValue >= 0) {
|
|
// EXPANSION: Use new fast dilation algorithm
|
|
resultMask = this._fastDilateDT(binaryData, width, height, absExpansionValue);
|
|
}
|
|
else {
|
|
// CONTRACTION: Use new fast erosion algorithm
|
|
resultMask = this._fastErodeDT(binaryData, width, height, absExpansionValue);
|
|
}
|
|
// 3. Create the final output canvas with sharp edges
|
|
const outputCanvas = document.createElement('canvas');
|
|
outputCanvas.width = width;
|
|
outputCanvas.height = height;
|
|
const outputCtx = outputCanvas.getContext('2d', { willReadFrequently: true });
|
|
const outputData = outputCtx.createImageData(width, height);
|
|
for (let i = 0; i < resultMask.length; i++) {
|
|
const alpha = resultMask[i] === 1 ? 255 : 0; // Sharp binary mask - no smoothing
|
|
outputData.data[i * 4] = 255; // R
|
|
outputData.data[i * 4 + 1] = 255; // G
|
|
outputData.data[i * 4 + 2] = 255; // B
|
|
outputData.data[i * 4 + 3] = alpha; // A - sharp edges
|
|
}
|
|
outputCtx.putImageData(outputData, 0, 0);
|
|
return outputCanvas;
|
|
}
|
|
/**
|
|
* Creates a feathered mask from existing ImageData (used when combining expansion + feather)
|
|
*/
|
|
_createFeatheredMaskFromImageData(imageData, featherRadius, width, height) {
|
|
const data = imageData.data;
|
|
const binaryData = new Uint8Array(width * height);
|
|
// Convert ImageData to binary mask
|
|
for (let i = 0; i < width * height; i++) {
|
|
binaryData[i] = data[i * 4 + 3] > 0 ? 1 : 0; // 1 = inside, 0 = outside
|
|
}
|
|
// Calculate the fast distance transform
|
|
const distanceMap = this._fastDistanceTransform(binaryData, width, height);
|
|
// Find the maximum distance to normalize
|
|
let maxDistance = 0;
|
|
for (let i = 0; i < distanceMap.length; i++) {
|
|
if (distanceMap[i] > maxDistance) {
|
|
maxDistance = distanceMap[i];
|
|
}
|
|
}
|
|
// Create the final output canvas with feathering applied
|
|
const outputCanvas = document.createElement('canvas');
|
|
outputCanvas.width = width;
|
|
outputCanvas.height = height;
|
|
const outputCtx = outputCanvas.getContext('2d', { willReadFrequently: true });
|
|
const outputData = outputCtx.createImageData(width, height);
|
|
// Use featherRadius as the threshold for the gradient
|
|
const threshold = Math.min(featherRadius, maxDistance);
|
|
for (let i = 0; i < distanceMap.length; i++) {
|
|
const distance = distanceMap[i];
|
|
const originalAlpha = data[i * 4 + 3];
|
|
if (originalAlpha === 0) {
|
|
// Transparent pixels remain transparent
|
|
outputData.data[i * 4] = 255;
|
|
outputData.data[i * 4 + 1] = 255;
|
|
outputData.data[i * 4 + 2] = 255;
|
|
outputData.data[i * 4 + 3] = 0;
|
|
}
|
|
else if (distance <= threshold) {
|
|
// Edge area - apply gradient alpha (from edge inward)
|
|
const gradientValue = distance / threshold;
|
|
const alphaValue = Math.floor(gradientValue * 255);
|
|
outputData.data[i * 4] = 255;
|
|
outputData.data[i * 4 + 1] = 255;
|
|
outputData.data[i * 4 + 2] = 255;
|
|
outputData.data[i * 4 + 3] = alphaValue;
|
|
}
|
|
else {
|
|
// Inner area - full alpha (no blending effect)
|
|
outputData.data[i * 4] = 255;
|
|
outputData.data[i * 4 + 1] = 255;
|
|
outputData.data[i * 4 + 2] = 255;
|
|
outputData.data[i * 4 + 3] = 255;
|
|
}
|
|
}
|
|
outputCtx.putImageData(outputData, 0, 0);
|
|
return outputCanvas;
|
|
}
|
|
}
|