mirror of
https://github.com/Azornes/Comfyui-LayerForge.git
synced 2026-03-21 20:52:12 -03:00
ccfa2b6cfb
Implements a real-time blue outline preview when adjusting the expansion and feather sliders in the custom shape mask UI. The preview updates dynamically while dragging, and applies the mask only on mouse release. Adds a viewport change listener to keep the preview in sync during zooming or panning. Refactors mask expansion/contraction to use fast morphological operations for sharp edges and updates mask drawing to handle holes correctly.
953 lines
43 KiB
JavaScript
953 lines
43 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.canvasInstance = canvasInstance;
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this.mainCanvas = canvasInstance.canvas;
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this.onStateChange = callbacks.onStateChange || null;
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this.maskCanvas = document.createElement('canvas');
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const maskCtx = this.maskCanvas.getContext('2d', { willReadFrequently: true });
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if (!maskCtx) {
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throw new Error("Failed to get 2D context for mask canvas");
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}
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this.maskCtx = maskCtx;
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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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this.initMaskCanvas();
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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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const extraSpace = 2000; // Allow for a generous drawing area outside the output area
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this.maskCanvas.width = this.canvasInstance.width + extraSpace;
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this.maskCanvas.height = this.canvasInstance.height + extraSpace;
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this.x = -extraSpace / 2;
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this.y = -extraSpace / 2;
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this.maskCtx.clearRect(0, 0, this.maskCanvas.width, this.maskCanvas.height);
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log.info(`Initialized mask canvas with extended size: ${this.maskCanvas.width}x${this.maskCanvas.height}, origin at (${this.x}, ${this.y})`);
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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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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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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.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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const canvasLastX = this.lastPosition.x - this.x;
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const canvasLastY = this.lastPosition.y - this.y;
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const canvasX = worldCoords.x - this.x;
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const canvasY = worldCoords.y - this.y;
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const canvasWidth = this.maskCanvas.width;
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const canvasHeight = this.maskCanvas.height;
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if (canvasX >= 0 && canvasX < canvasWidth &&
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canvasY >= 0 && canvasY < canvasHeight &&
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canvasLastX >= 0 && canvasLastX < canvasWidth &&
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canvasLastY >= 0 && canvasLastY < canvasHeight) {
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this.maskCtx.beginPath();
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this.maskCtx.moveTo(canvasLastX, canvasLastY);
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this.maskCtx.lineTo(canvasX, canvasY);
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const gradientRadius = this.brushSize / 2;
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if (this.brushHardness === 1) {
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this.maskCtx.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 = this.maskCtx.createRadialGradient(canvasX, canvasY, innerRadius, canvasX, canvasY, gradientRadius);
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gradient.addColorStop(0, `rgba(255, 255, 255, ${this.brushStrength})`);
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gradient.addColorStop(1, `rgba(255, 255, 255, 0)`);
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this.maskCtx.strokeStyle = gradient;
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}
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this.maskCtx.lineWidth = this.brushSize;
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this.maskCtx.lineCap = 'round';
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this.maskCtx.lineJoin = 'round';
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this.maskCtx.globalCompositeOperation = 'source-over';
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this.maskCtx.stroke();
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}
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else {
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log.debug(`Drawing outside mask canvas bounds: (${canvasX}, ${canvasY})`);
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}
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}
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drawBrushPreview(viewCoords) {
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if (!this.previewVisible || this.isDrawing) {
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this.clearPreview();
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return;
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}
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this.clearPreview();
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const zoom = this.canvasInstance.viewport.zoom;
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const radius = (this.brushSize / 2) * zoom;
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this.previewCtx.beginPath();
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this.previewCtx.arc(viewCoords.x, viewCoords.y, radius, 0, 2 * Math.PI);
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this.previewCtx.strokeStyle = 'rgba(255, 255, 255, 0.8)';
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this.previewCtx.lineWidth = 1;
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this.previewCtx.setLineDash([2, 4]);
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this.previewCtx.stroke();
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}
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clearPreview() {
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this.previewCtx.clearRect(0, 0, this.previewCanvas.width, this.previewCanvas.height);
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this.clearShapePreview();
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}
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/**
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* Initialize shape preview canvas for showing blue outline during slider adjustments
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* Canvas is pinned to viewport and covers the entire visible area
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*/
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initShapePreviewCanvas() {
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if (this.shapePreviewCanvas.parentElement) {
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this.shapePreviewCanvas.parentElement.removeChild(this.shapePreviewCanvas);
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}
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// Canvas covers entire viewport - pinned to screen, not world
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this.shapePreviewCanvas.width = this.canvasInstance.canvas.width;
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this.shapePreviewCanvas.height = this.canvasInstance.canvas.height;
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// Pin canvas to viewport - no world coordinate positioning
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this.shapePreviewCanvas.style.position = 'absolute';
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this.shapePreviewCanvas.style.left = '0px';
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this.shapePreviewCanvas.style.top = '0px';
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this.shapePreviewCanvas.style.width = '100%';
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this.shapePreviewCanvas.style.height = '100%';
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this.shapePreviewCanvas.style.pointerEvents = 'none';
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this.shapePreviewCanvas.style.zIndex = '15'; // Above regular preview
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this.shapePreviewCanvas.style.imageRendering = 'pixelated'; // Sharp rendering
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if (this.canvasInstance.canvas.parentElement) {
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this.canvasInstance.canvas.parentElement.appendChild(this.shapePreviewCanvas);
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}
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}
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/**
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* Show blue outline preview of expansion/contraction during slider adjustment
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*/
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showShapePreview(expansionValue, featherValue = 0) {
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if (!this.canvasInstance.outputAreaShape?.points || this.canvasInstance.outputAreaShape.points.length < 3) {
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return;
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}
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if (!this.shapePreviewCanvas.parentElement)
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this.initShapePreviewCanvas();
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this.isPreviewMode = true;
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this.shapePreviewVisible = true;
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this.shapePreviewCanvas.style.display = 'block';
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this.clearShapePreview();
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const shape = this.canvasInstance.outputAreaShape;
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const viewport = this.canvasInstance.viewport;
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const screenPoints = shape.points.map(p => ({
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x: (p.x - viewport.x) * viewport.zoom,
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y: (p.y - viewport.y) * viewport.zoom
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}));
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// This function now returns Point[][] to handle islands.
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const allContours = this._calculatePreviewPointsScreen([screenPoints], expansionValue, viewport.zoom);
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// Draw main expansion/contraction preview
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this.shapePreviewCtx.strokeStyle = '#4A9EFF';
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this.shapePreviewCtx.lineWidth = 2;
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this.shapePreviewCtx.setLineDash([4, 4]);
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this.shapePreviewCtx.globalAlpha = 0.8;
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for (const contour of allContours) {
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if (contour.length < 2)
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continue;
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this.shapePreviewCtx.beginPath();
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this.shapePreviewCtx.moveTo(contour[0].x, contour[0].y);
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for (let i = 1; i < contour.length; i++) {
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this.shapePreviewCtx.lineTo(contour[i].x, contour[i].y);
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}
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this.shapePreviewCtx.closePath();
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this.shapePreviewCtx.stroke();
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}
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// Draw feather preview
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if (featherValue > 0) {
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const allFeatherContours = this._calculatePreviewPointsScreen(allContours, -featherValue, viewport.zoom);
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this.shapePreviewCtx.strokeStyle = '#4A9EFF';
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this.shapePreviewCtx.lineWidth = 1;
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this.shapePreviewCtx.setLineDash([3, 5]);
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this.shapePreviewCtx.globalAlpha = 0.6;
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for (const contour of allFeatherContours) {
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if (contour.length < 2)
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continue;
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this.shapePreviewCtx.beginPath();
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this.shapePreviewCtx.moveTo(contour[0].x, contour[0].y);
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for (let i = 1; i < contour.length; i++) {
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this.shapePreviewCtx.lineTo(contour[i].x, contour[i].y);
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}
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this.shapePreviewCtx.closePath();
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this.shapePreviewCtx.stroke();
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}
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}
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log.debug(`Shape preview shown with expansion: ${expansionValue}px, feather: ${featherValue}px`);
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}
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/**
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* Hide shape preview and switch back to normal mode
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*/
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hideShapePreview() {
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this.isPreviewMode = false;
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this.shapePreviewVisible = false;
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this.clearShapePreview();
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this.shapePreviewCanvas.style.display = 'none';
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log.debug("Shape preview hidden");
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}
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/**
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* Clear shape preview canvas
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*/
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clearShapePreview() {
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if (this.shapePreviewCtx) {
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this.shapePreviewCtx.clearRect(0, 0, this.shapePreviewCanvas.width, this.shapePreviewCanvas.height);
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}
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}
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/**
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* Update shape preview canvas position and scale when viewport changes
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* This ensures the preview stays synchronized with the world coordinates
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*/
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updateShapePreviewPosition() {
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if (!this.shapePreviewCanvas.parentElement || !this.shapePreviewVisible) {
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return;
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}
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const viewport = this.canvasInstance.viewport;
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const bufferSize = 300;
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// Calculate world position (output area + buffer)
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const previewX = -bufferSize; // World coordinates
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const previewY = -bufferSize;
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// Convert to screen coordinates
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const screenX = (previewX - viewport.x) * viewport.zoom;
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const screenY = (previewY - viewport.y) * viewport.zoom;
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// Update position and scale
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this.shapePreviewCanvas.style.left = `${screenX}px`;
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this.shapePreviewCanvas.style.top = `${screenY}px`;
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const previewWidth = this.canvasInstance.width + (bufferSize * 2);
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const previewHeight = this.canvasInstance.height + (bufferSize * 2);
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this.shapePreviewCanvas.style.width = `${previewWidth * viewport.zoom}px`;
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this.shapePreviewCanvas.style.height = `${previewHeight * viewport.zoom}px`;
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}
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/**
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* Ultra-fast dilation using Distance Transform + thresholding (Manhattan distance for speed)
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*/
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_fastDilateDT(mask, width, height, radius) {
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const INF = 1e9;
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const dist = new Float32Array(width * height);
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// 1. Initialize: 0 for foreground, INF for background
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for (let i = 0; i < width * height; ++i) {
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dist[i] = mask[i] ? 0 : INF;
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}
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// 2. Forward pass: top-left -> bottom-right
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for (let y = 0; y < height; ++y) {
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for (let x = 0; x < width; ++x) {
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const i = y * width + x;
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if (mask[i])
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continue;
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if (x > 0)
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dist[i] = Math.min(dist[i], dist[y * width + (x - 1)] + 1);
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if (y > 0)
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dist[i] = Math.min(dist[i], dist[(y - 1) * width + x] + 1);
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}
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}
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// 3. Backward pass: bottom-right -> top-left
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for (let y = height - 1; y >= 0; --y) {
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for (let x = width - 1; x >= 0; --x) {
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const i = y * width + x;
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if (mask[i])
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continue;
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if (x < width - 1)
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dist[i] = Math.min(dist[i], dist[y * width + (x + 1)] + 1);
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if (y < height - 1)
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dist[i] = Math.min(dist[i], dist[(y + 1) * width + x] + 1);
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}
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}
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// 4. Thresholding: if distance <= radius, it's part of the expanded mask
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const expanded = new Uint8Array(width * height);
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for (let i = 0; i < width * height; ++i) {
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expanded[i] = dist[i] <= radius ? 1 : 0;
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}
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return expanded;
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}
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/**
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* Ultra-fast erosion using Distance Transform + thresholding
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*/
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_fastErodeDT(mask, width, height, radius) {
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const INF = 1e9;
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const dist = new Float32Array(width * height);
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// 1. Initialize: 0 for background, INF for foreground (inverse of dilation)
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for (let i = 0; i < width * height; ++i) {
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dist[i] = mask[i] ? INF : 0;
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}
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// 2. Forward pass: top-left -> bottom-right
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for (let y = 0; y < height; ++y) {
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for (let x = 0; x < width; ++x) {
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const i = y * width + x;
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if (!mask[i])
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continue;
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if (x > 0)
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dist[i] = Math.min(dist[i], dist[y * width + (x - 1)] + 1);
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if (y > 0)
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dist[i] = Math.min(dist[i], dist[(y - 1) * width + x] + 1);
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}
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}
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// 3. Backward pass: bottom-right -> top-left
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for (let y = height - 1; y >= 0; --y) {
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for (let x = width - 1; x >= 0; --x) {
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const i = y * width + x;
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if (!mask[i])
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continue;
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if (x < width - 1)
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dist[i] = Math.min(dist[i], dist[y * width + (x + 1)] + 1);
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if (y < height - 1)
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dist[i] = Math.min(dist[i], dist[(y + 1) * width + x] + 1);
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}
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}
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// 4. Thresholding: if distance > radius, it's part of the eroded mask
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const eroded = new Uint8Array(width * height);
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for (let i = 0; i < width * height; ++i) {
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eroded[i] = dist[i] > radius ? 1 : 0;
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}
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return eroded;
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}
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/**
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* Calculate preview points using screen coordinates for pinned canvas.
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* This version now accepts multiple contours and returns multiple contours.
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*/
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_calculatePreviewPointsScreen(contours, expansionValue, zoom) {
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if (contours.length === 0 || expansionValue === 0)
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return contours;
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const width = this.canvasInstance.canvas.width;
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const height = this.canvasInstance.canvas.height;
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const tempCanvas = document.createElement('canvas');
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tempCanvas.width = width;
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tempCanvas.height = height;
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const tempCtx = tempCanvas.getContext('2d', { willReadFrequently: true });
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// Draw all contours to create the initial mask
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tempCtx.fillStyle = 'white';
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for (const points of contours) {
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if (points.length < 3)
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continue;
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tempCtx.beginPath();
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tempCtx.moveTo(points[0].x, points[0].y);
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for (let i = 1; i < points.length; i++) {
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tempCtx.lineTo(points[i].x, points[i].y);
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}
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tempCtx.closePath();
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tempCtx.fill('evenodd'); // Use evenodd to handle holes correctly
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}
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const maskImage = tempCtx.getImageData(0, 0, width, height);
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const binaryData = new Uint8Array(width * height);
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for (let i = 0; i < binaryData.length; i++) {
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binaryData[i] = maskImage.data[i * 4] > 0 ? 1 : 0;
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}
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let resultMask;
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const scaledExpansionValue = Math.round(Math.abs(expansionValue * zoom));
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if (expansionValue >= 0) {
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resultMask = this._fastDilateDT(binaryData, width, height, scaledExpansionValue);
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}
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else {
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resultMask = this._fastErodeDT(binaryData, width, height, scaledExpansionValue);
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}
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// Extract all contours (outer and inner) from the resulting mask
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const allResultContours = this._traceAllContours(resultMask, width, height);
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return allResultContours.length > 0 ? allResultContours : contours;
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}
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/**
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* Calculate preview points in world coordinates using morphological operations
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* 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() {
|
|
this.maskCtx.clearRect(0, 0, this.maskCanvas.width, this.maskCanvas.height);
|
|
if (this.isActive) {
|
|
this.canvasInstance.canvasState.saveMaskState();
|
|
}
|
|
}
|
|
getMask() {
|
|
return this.maskCanvas;
|
|
}
|
|
getMaskImageWithAlpha() {
|
|
const tempCanvas = document.createElement('canvas');
|
|
tempCanvas.width = this.maskCanvas.width;
|
|
tempCanvas.height = this.maskCanvas.height;
|
|
const tempCtx = tempCanvas.getContext('2d', { willReadFrequently: true });
|
|
if (!tempCtx) {
|
|
throw new Error("Failed to get 2D context for temporary canvas");
|
|
}
|
|
tempCtx.drawImage(this.maskCanvas, 0, 0);
|
|
const imageData = tempCtx.getImageData(0, 0, tempCanvas.width, tempCanvas.height);
|
|
const data = imageData.data;
|
|
for (let i = 0; i < data.length; i += 4) {
|
|
const alpha = data[i];
|
|
data[i] = 255;
|
|
data[i + 1] = 255;
|
|
data[i + 2] = 255;
|
|
data[i + 3] = alpha;
|
|
}
|
|
tempCtx.putImageData(imageData, 0, 0);
|
|
const maskImage = new Image();
|
|
maskImage.src = tempCanvas.toDataURL();
|
|
return maskImage;
|
|
}
|
|
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.maskCanvas = 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.maskCanvas.width = newWidth;
|
|
this.maskCanvas.height = newHeight;
|
|
const newMaskCtx = this.maskCanvas.getContext('2d', { willReadFrequently: true });
|
|
if (!newMaskCtx) {
|
|
throw new Error("Failed to get 2D context for new mask canvas");
|
|
}
|
|
this.maskCtx = newMaskCtx;
|
|
if (oldMask.width > 0 && oldMask.height > 0) {
|
|
const offsetX = this.x - oldX;
|
|
const offsetY = this.y - oldY;
|
|
this.maskCtx.drawImage(oldMask, offsetX, offsetY);
|
|
log.debug(`Preserved mask content with offset (${offsetX}, ${offsetY})`);
|
|
}
|
|
log.info(`Mask canvas resized to ${this.maskCanvas.width}x${this.maskCanvas.height}, position (${this.x}, ${this.y})`);
|
|
log.info(`Canvas size change: width ${isIncreasingWidth ? 'increased' : 'decreased'}, height ${isIncreasingHeight ? 'increased' : 'decreased'}`);
|
|
}
|
|
updatePosition(dx, dy) {
|
|
this.x += dx;
|
|
this.y += dy;
|
|
log.info(`Mask position updated to (${this.x}, ${this.y})`);
|
|
}
|
|
toggleOverlayVisibility() {
|
|
this.isOverlayVisible = !this.isOverlayVisible;
|
|
log.info(`Mask overlay visibility toggled to: ${this.isOverlayVisible}`);
|
|
}
|
|
setMask(image) {
|
|
const destX = -this.x;
|
|
const destY = -this.y;
|
|
this.maskCtx.clearRect(destX, destY, this.canvasInstance.width, this.canvasInstance.height);
|
|
this.maskCtx.drawImage(image, destX, destY);
|
|
if (this.onStateChange) {
|
|
this.onStateChange();
|
|
}
|
|
this.canvasInstance.render();
|
|
log.info(`MaskTool updated with a new mask image at correct canvas position (${destX}, ${destY}).`);
|
|
}
|
|
addMask(image) {
|
|
const destX = -this.x;
|
|
const destY = -this.y;
|
|
// Don't clear existing mask - just add to it
|
|
this.maskCtx.globalCompositeOperation = 'source-over';
|
|
this.maskCtx.drawImage(image, destX, destY);
|
|
if (this.onStateChange) {
|
|
this.onStateChange();
|
|
}
|
|
this.canvasInstance.render();
|
|
log.info(`MaskTool added mask overlay at correct canvas position (${destX}, ${destY}) without clearing existing mask.`);
|
|
}
|
|
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 destX = -this.x;
|
|
const destY = -this.y;
|
|
// Clear the entire mask canvas first
|
|
this.maskCtx.clearRect(0, 0, this.maskCanvas.width, this.maskCanvas.height);
|
|
// Create points relative to the mask canvas's coordinate system (by applying the offset)
|
|
const maskPoints = shape.points.map(p => ({ x: p.x + destX, y: p.y + destY }));
|
|
// 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;
|
|
if (!needsExpansion && !needsFeather) {
|
|
// Simple case: just draw the original shape
|
|
this.maskCtx.fillStyle = 'white';
|
|
this.maskCtx.beginPath();
|
|
this.maskCtx.moveTo(maskPoints[0].x, maskPoints[0].y);
|
|
for (let i = 1; i < maskPoints.length; i++) {
|
|
this.maskCtx.lineTo(maskPoints[i].x, maskPoints[i].y);
|
|
}
|
|
this.maskCtx.closePath();
|
|
this.maskCtx.fill('evenodd'); // Use evenodd to handle holes correctly
|
|
}
|
|
else if (needsExpansion && !needsFeather) {
|
|
// Expansion only: use the new distance transform expansion
|
|
const expandedMaskCanvas = this._createExpandedMaskCanvas(maskPoints, this.canvasInstance.shapeMaskExpansionValue, this.maskCanvas.width, this.maskCanvas.height);
|
|
this.maskCtx.drawImage(expandedMaskCanvas, 0, 0);
|
|
}
|
|
else if (!needsExpansion && needsFeather) {
|
|
// Feather only: apply feathering to the original shape
|
|
const featheredMaskCanvas = this._createFeatheredMaskCanvas(maskPoints, this.canvasInstance.shapeMaskFeatherValue, this.maskCanvas.width, this.maskCanvas.height);
|
|
this.maskCtx.drawImage(featheredMaskCanvas, 0, 0);
|
|
}
|
|
else {
|
|
// Both expansion and feather: first expand, then apply feather to the expanded shape
|
|
// Step 1: Create expanded shape
|
|
const expandedMaskCanvas = this._createExpandedMaskCanvas(maskPoints, this.canvasInstance.shapeMaskExpansionValue, this.maskCanvas.width, this.maskCanvas.height);
|
|
// Step 2: Extract points from the expanded canvas and apply feathering
|
|
// For now, we'll apply feathering to the expanded canvas directly
|
|
// This is a simplified approach - we could extract the outline points for more precision
|
|
const tempCtx = expandedMaskCanvas.getContext('2d', { willReadFrequently: true });
|
|
const expandedImageData = tempCtx.getImageData(0, 0, expandedMaskCanvas.width, expandedMaskCanvas.height);
|
|
// Apply feathering to the expanded shape
|
|
const featheredMaskCanvas = this._createFeatheredMaskFromImageData(expandedImageData, this.canvasInstance.shapeMaskFeatherValue, this.maskCanvas.width, this.maskCanvas.height);
|
|
this.maskCtx.drawImage(featheredMaskCanvas, 0, 0);
|
|
}
|
|
if (this.onStateChange) {
|
|
this.onStateChange();
|
|
}
|
|
this.canvasInstance.render();
|
|
log.info(`Applied shape mask with expansion: ${needsExpansion}, feather: ${needsFeather}.`);
|
|
}
|
|
/**
|
|
* Removes mask in the area of the custom output area shape
|
|
*/
|
|
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 destX = -this.x;
|
|
const destY = -this.y;
|
|
this.maskCtx.save();
|
|
this.maskCtx.globalCompositeOperation = 'destination-out';
|
|
this.maskCtx.translate(destX, destY);
|
|
this.maskCtx.beginPath();
|
|
this.maskCtx.moveTo(shape.points[0].x, shape.points[0].y);
|
|
for (let i = 1; i < shape.points.length; i++) {
|
|
this.maskCtx.lineTo(shape.points[i].x, shape.points[i].y);
|
|
}
|
|
this.maskCtx.closePath();
|
|
this.maskCtx.fill();
|
|
this.maskCtx.restore();
|
|
if (this.onStateChange) {
|
|
this.onStateChange();
|
|
}
|
|
this.canvasInstance.render();
|
|
log.info(`Removed shape mask with ${shape.points.length} points`);
|
|
}
|
|
_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 mask using distance transform - much better for complex shapes
|
|
* than the centroid-based approach. This version only does expansion without transparency calculations.
|
|
*/
|
|
_calculateExpandedPoints(points, expansionValue) {
|
|
if (points.length < 3 || expansionValue === 0)
|
|
return points;
|
|
// For expansion, we need to create a temporary canvas to use the distance transform approach
|
|
// This will give us much better results for complex shapes than the centroid method
|
|
const tempCanvas = this._createExpandedMaskCanvas(points, expansionValue, this.maskCanvas.width, this.maskCanvas.height);
|
|
// Extract the expanded shape outline from the canvas
|
|
// For now, return the original points as a fallback - the real expansion happens in the canvas
|
|
// The calling code will use the canvas directly instead of these points
|
|
return points;
|
|
}
|
|
/**
|
|
* 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;
|
|
}
|
|
}
|