Files
Comfyui-LayerForge/js/CanvasIO.js
Dariusz L 14c5f291a6 Refactor output area and mask handling for flexible canvas bounds
This update introduces a unified output area bounds system, allowing the output area to be extended in all directions independently of the custom shape. All mask and layer operations now reference outputAreaBounds, ensuring correct alignment and rendering. The mask tool, mask editor, and export logic have been refactored to use these bounds, and a new UI for output area extension with live preview and tooltips has been added. The code also improves logging and visualization of mask and output area boundaries.
2025-07-26 18:27:14 +02:00

703 lines
32 KiB
JavaScript

import { createCanvas } from "./utils/CommonUtils.js";
import { createModuleLogger } from "./utils/LoggerUtils.js";
import { webSocketManager } from "./utils/WebSocketManager.js";
const log = createModuleLogger('CanvasIO');
export class CanvasIO {
constructor(canvas) {
this.canvas = canvas;
this._saveInProgress = null;
}
async saveToServer(fileName, outputMode = 'disk') {
if (outputMode === 'disk') {
if (!window.canvasSaveStates) {
window.canvasSaveStates = new Map();
}
const nodeId = this.canvas.node.id;
const saveKey = `${nodeId}_${fileName}`;
if (this._saveInProgress || window.canvasSaveStates.get(saveKey)) {
log.warn(`Save already in progress for node ${nodeId}, waiting...`);
return this._saveInProgress || window.canvasSaveStates.get(saveKey);
}
log.info(`Starting saveToServer (disk) with fileName: ${fileName} for node: ${nodeId}`);
this._saveInProgress = this._performSave(fileName, outputMode);
window.canvasSaveStates.set(saveKey, this._saveInProgress);
try {
return await this._saveInProgress;
}
finally {
this._saveInProgress = null;
window.canvasSaveStates.delete(saveKey);
log.debug(`Save completed for node ${nodeId}, lock released`);
}
}
else {
log.info(`Starting saveToServer (RAM) for node: ${this.canvas.node.id}`);
return this._performSave(fileName, outputMode);
}
}
async _performSave(fileName, outputMode) {
if (this.canvas.layers.length === 0) {
log.warn(`Node ${this.canvas.node.id} has no layers, creating empty canvas`);
return Promise.resolve(true);
}
await this.canvas.canvasState.saveStateToDB();
const nodeId = this.canvas.node.id;
const delay = (nodeId % 10) * 50;
if (delay > 0) {
await new Promise(resolve => setTimeout(resolve, delay));
}
return new Promise((resolve) => {
const { canvas: tempCanvas, ctx: tempCtx } = createCanvas(this.canvas.width, this.canvas.height);
const { canvas: maskCanvas, ctx: maskCtx } = createCanvas(this.canvas.width, this.canvas.height);
const originalShape = this.canvas.outputAreaShape;
this.canvas.outputAreaShape = null;
const visibilityCanvas = document.createElement('canvas');
visibilityCanvas.width = this.canvas.width;
visibilityCanvas.height = this.canvas.height;
const visibilityCtx = visibilityCanvas.getContext('2d', { alpha: true });
if (!visibilityCtx)
throw new Error("Could not create visibility context");
if (!maskCtx)
throw new Error("Could not create mask context");
if (!tempCtx)
throw new Error("Could not create temp context");
maskCtx.fillStyle = '#ffffff';
maskCtx.fillRect(0, 0, this.canvas.width, this.canvas.height);
log.debug(`Canvas contexts created, starting layer rendering`);
this.canvas.canvasLayers.drawLayersToContext(tempCtx, this.canvas.layers);
this.canvas.canvasLayers.drawLayersToContext(visibilityCtx, this.canvas.layers);
log.debug(`Finished rendering layers`);
const visibilityData = visibilityCtx.getImageData(0, 0, this.canvas.width, this.canvas.height);
const maskData = maskCtx.getImageData(0, 0, this.canvas.width, this.canvas.height);
for (let i = 0; i < visibilityData.data.length; i += 4) {
const alpha = visibilityData.data[i + 3];
const maskValue = 255 - alpha;
maskData.data[i] = maskData.data[i + 1] = maskData.data[i + 2] = maskValue;
maskData.data[i + 3] = 255;
}
maskCtx.putImageData(maskData, 0, 0);
this.canvas.outputAreaShape = originalShape;
const toolMaskCanvas = this.canvas.maskTool.getMask();
if (toolMaskCanvas) {
const tempMaskCanvas = document.createElement('canvas');
tempMaskCanvas.width = this.canvas.width;
tempMaskCanvas.height = this.canvas.height;
const tempMaskCtx = tempMaskCanvas.getContext('2d', { willReadFrequently: true });
if (!tempMaskCtx)
throw new Error("Could not create temp mask context");
tempMaskCtx.clearRect(0, 0, tempMaskCanvas.width, tempMaskCanvas.height);
const maskX = this.canvas.maskTool.x;
const maskY = this.canvas.maskTool.y;
log.debug(`Extracting mask from world position (${maskX}, ${maskY}) for output area (0,0) to (${this.canvas.width}, ${this.canvas.height})`);
const sourceX = Math.max(0, -maskX); // Where in the mask canvas to start reading
const sourceY = Math.max(0, -maskY);
const destX = Math.max(0, maskX); // Where in the output canvas to start writing
const destY = Math.max(0, maskY);
const copyWidth = Math.min(toolMaskCanvas.width - sourceX, // Available width in source
this.canvas.width - destX // Available width in destination
);
const copyHeight = Math.min(toolMaskCanvas.height - sourceY, // Available height in source
this.canvas.height - destY // Available height in destination
);
if (copyWidth > 0 && copyHeight > 0) {
log.debug(`Copying mask region: source(${sourceX}, ${sourceY}) to dest(${destX}, ${destY}) size(${copyWidth}, ${copyHeight})`);
tempMaskCtx.drawImage(toolMaskCanvas, sourceX, sourceY, copyWidth, copyHeight, // Source rectangle
destX, destY, copyWidth, copyHeight // Destination rectangle
);
}
const tempMaskData = tempMaskCtx.getImageData(0, 0, this.canvas.width, this.canvas.height);
for (let i = 0; i < tempMaskData.data.length; i += 4) {
const alpha = tempMaskData.data[i + 3];
tempMaskData.data[i] = tempMaskData.data[i + 1] = tempMaskData.data[i + 2] = 255;
tempMaskData.data[i + 3] = alpha;
}
tempMaskCtx.putImageData(tempMaskData, 0, 0);
maskCtx.globalCompositeOperation = 'source-over';
maskCtx.drawImage(tempMaskCanvas, 0, 0);
}
if (outputMode === 'ram') {
const imageData = tempCanvas.toDataURL('image/png');
const maskData = maskCanvas.toDataURL('image/png');
log.info("Returning image and mask data as base64 for RAM mode.");
resolve({ image: imageData, mask: maskData });
return;
}
const fileNameWithoutMask = fileName.replace('.png', '_without_mask.png');
log.info(`Saving image without mask as: ${fileNameWithoutMask}`);
tempCanvas.toBlob(async (blobWithoutMask) => {
if (!blobWithoutMask)
return;
log.debug(`Created blob for image without mask, size: ${blobWithoutMask.size} bytes`);
const formDataWithoutMask = new FormData();
formDataWithoutMask.append("image", blobWithoutMask, fileNameWithoutMask);
formDataWithoutMask.append("overwrite", "true");
try {
const response = await fetch("/upload/image", {
method: "POST",
body: formDataWithoutMask,
});
log.debug(`Image without mask upload response: ${response.status}`);
}
catch (error) {
log.error(`Error uploading image without mask:`, error);
}
}, "image/png");
log.info(`Saving main image as: ${fileName}`);
tempCanvas.toBlob(async (blob) => {
if (!blob)
return;
log.debug(`Created blob for main image, size: ${blob.size} bytes`);
const formData = new FormData();
formData.append("image", blob, fileName);
formData.append("overwrite", "true");
try {
const resp = await fetch("/upload/image", {
method: "POST",
body: formData,
});
log.debug(`Main image upload response: ${resp.status}`);
if (resp.status === 200) {
const maskFileName = fileName.replace('.png', '_mask.png');
log.info(`Saving mask as: ${maskFileName}`);
maskCanvas.toBlob(async (maskBlob) => {
if (!maskBlob)
return;
log.debug(`Created blob for mask, size: ${maskBlob.size} bytes`);
const maskFormData = new FormData();
maskFormData.append("image", maskBlob, maskFileName);
maskFormData.append("overwrite", "true");
try {
const maskResp = await fetch("/upload/image", {
method: "POST",
body: maskFormData,
});
log.debug(`Mask upload response: ${maskResp.status}`);
if (maskResp.status === 200) {
const data = await resp.json();
if (this.canvas.widget) {
this.canvas.widget.value = fileName;
}
log.info(`All files saved successfully, widget value set to: ${fileName}`);
resolve(true);
}
else {
log.error(`Error saving mask: ${maskResp.status}`);
resolve(false);
}
}
catch (error) {
log.error(`Error saving mask:`, error);
resolve(false);
}
}, "image/png");
}
else {
log.error(`Main image upload failed: ${resp.status} - ${resp.statusText}`);
resolve(false);
}
}
catch (error) {
log.error(`Error uploading main image:`, error);
resolve(false);
}
}, "image/png");
});
}
async _renderOutputData() {
log.info("=== RENDERING OUTPUT DATA FOR COMFYUI ===");
// Użyj zunifikowanych funkcji z CanvasLayers
const imageBlob = await this.canvas.canvasLayers.getFlattenedCanvasAsBlob();
const maskBlob = await this.canvas.canvasLayers.getFlattenedMaskAsBlob();
if (!imageBlob || !maskBlob) {
throw new Error("Failed to generate canvas or mask blobs");
}
// Konwertuj blob na data URL
const imageDataUrl = await new Promise((resolve, reject) => {
const reader = new FileReader();
reader.onload = () => resolve(reader.result);
reader.onerror = reject;
reader.readAsDataURL(imageBlob);
});
const maskDataUrl = await new Promise((resolve, reject) => {
const reader = new FileReader();
reader.onload = () => resolve(reader.result);
reader.onerror = reject;
reader.readAsDataURL(maskBlob);
});
const bounds = this.canvas.outputAreaBounds;
log.info(`=== OUTPUT DATA GENERATED ===`);
log.info(`Image size: ${bounds.width}x${bounds.height}`);
log.info(`Image data URL length: ${imageDataUrl.length}`);
log.info(`Mask data URL length: ${maskDataUrl.length}`);
return { image: imageDataUrl, mask: maskDataUrl };
}
async sendDataViaWebSocket(nodeId) {
log.info(`Preparing to send data for node ${nodeId} via WebSocket.`);
const { image, mask } = await this._renderOutputData();
try {
log.info(`Sending data for node ${nodeId}...`);
await webSocketManager.sendMessage({
type: 'canvas_data',
nodeId: String(nodeId),
image: image,
mask: mask,
}, true); // `true` requires an acknowledgment
log.info(`Data for node ${nodeId} has been sent and acknowledged by the server.`);
return true;
}
catch (error) {
log.error(`Failed to send data for node ${nodeId}:`, error);
throw new Error(`Failed to get confirmation from server for node ${nodeId}. The workflow might not have the latest canvas data.`);
}
}
async addInputToCanvas(inputImage, inputMask) {
try {
log.debug("Adding input to canvas:", { inputImage });
const { canvas: tempCanvas, ctx: tempCtx } = createCanvas(inputImage.width, inputImage.height);
if (!tempCtx)
throw new Error("Could not create temp context");
const imgData = new ImageData(new Uint8ClampedArray(inputImage.data), inputImage.width, inputImage.height);
tempCtx.putImageData(imgData, 0, 0);
const image = new Image();
await new Promise((resolve, reject) => {
image.onload = resolve;
image.onerror = reject;
image.src = tempCanvas.toDataURL();
});
const bounds = this.canvas.outputAreaBounds;
const scale = Math.min(bounds.width / inputImage.width * 0.8, bounds.height / inputImage.height * 0.8);
const layer = await this.canvas.canvasLayers.addLayerWithImage(image, {
x: bounds.x + (bounds.width - inputImage.width * scale) / 2,
y: bounds.y + (bounds.height - inputImage.height * scale) / 2,
width: inputImage.width * scale,
height: inputImage.height * scale,
});
if (inputMask && layer) {
layer.mask = inputMask.data;
}
log.info("Layer added successfully");
return true;
}
catch (error) {
log.error("Error in addInputToCanvas:", error);
throw error;
}
}
async convertTensorToImage(tensor) {
try {
log.debug("Converting tensor to image:", tensor);
if (!tensor || !tensor.data || !tensor.width || !tensor.height) {
throw new Error("Invalid tensor data");
}
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d', { willReadFrequently: true });
if (!ctx)
throw new Error("Could not create canvas context");
canvas.width = tensor.width;
canvas.height = tensor.height;
const imageData = new ImageData(new Uint8ClampedArray(tensor.data), tensor.width, tensor.height);
ctx.putImageData(imageData, 0, 0);
return new Promise((resolve, reject) => {
const img = new Image();
img.onload = () => resolve(img);
img.onerror = (e) => reject(new Error("Failed to load image: " + e));
img.src = canvas.toDataURL();
});
}
catch (error) {
log.error("Error converting tensor to image:", error);
throw error;
}
}
async convertTensorToMask(tensor) {
if (!tensor || !tensor.data) {
throw new Error("Invalid mask tensor");
}
try {
return new Float32Array(tensor.data);
}
catch (error) {
throw new Error(`Mask conversion failed: ${error.message}`);
}
}
async initNodeData() {
try {
log.info("Starting node data initialization...");
if (!this.canvas.node || !this.canvas.node.inputs) {
log.debug("Node or inputs not ready");
return this.scheduleDataCheck();
}
if (this.canvas.node.inputs[0] && this.canvas.node.inputs[0].link) {
const imageLinkId = this.canvas.node.inputs[0].link;
const imageData = window.app.nodeOutputs[imageLinkId];
if (imageData) {
log.debug("Found image data:", imageData);
await this.processImageData(imageData);
this.canvas.dataInitialized = true;
}
else {
log.debug("Image data not available yet");
return this.scheduleDataCheck();
}
}
if (this.canvas.node.inputs[1] && this.canvas.node.inputs[1].link) {
const maskLinkId = this.canvas.node.inputs[1].link;
const maskData = window.app.nodeOutputs[maskLinkId];
if (maskData) {
log.debug("Found mask data:", maskData);
await this.processMaskData(maskData);
}
}
}
catch (error) {
log.error("Error in initNodeData:", error);
return this.scheduleDataCheck();
}
}
scheduleDataCheck() {
if (this.canvas.pendingDataCheck) {
clearTimeout(this.canvas.pendingDataCheck);
}
this.canvas.pendingDataCheck = window.setTimeout(() => {
this.canvas.pendingDataCheck = null;
if (!this.canvas.dataInitialized) {
this.initNodeData();
}
}, 1000);
}
async processImageData(imageData) {
try {
if (!imageData)
return;
log.debug("Processing image data:", {
type: typeof imageData,
isArray: Array.isArray(imageData),
shape: imageData.shape,
hasData: !!imageData.data
});
if (Array.isArray(imageData)) {
imageData = imageData[0];
}
if (!imageData.shape || !imageData.data) {
throw new Error("Invalid image data format");
}
const originalWidth = imageData.shape[2];
const originalHeight = imageData.shape[1];
const scale = Math.min(this.canvas.width / originalWidth * 0.8, this.canvas.height / originalHeight * 0.8);
const convertedData = this.convertTensorToImageData(imageData);
if (convertedData) {
const image = await this.createImageFromData(convertedData);
this.addScaledLayer(image, scale);
log.info("Image layer added successfully with scale:", scale);
}
}
catch (error) {
log.error("Error processing image data:", error);
throw error;
}
}
addScaledLayer(image, scale) {
try {
const scaledWidth = image.width * scale;
const scaledHeight = image.height * scale;
const layer = {
id: '', // This will be set in addLayerWithImage
imageId: '', // This will be set in addLayerWithImage
name: 'Layer',
image: image,
x: (this.canvas.width - scaledWidth) / 2,
y: (this.canvas.height - scaledHeight) / 2,
width: scaledWidth,
height: scaledHeight,
rotation: 0,
zIndex: this.canvas.layers.length,
originalWidth: image.width,
originalHeight: image.height,
blendMode: 'normal',
opacity: 1,
visible: true
};
this.canvas.layers.push(layer);
this.canvas.updateSelection([layer]);
this.canvas.render();
log.debug("Scaled layer added:", {
originalSize: `${image.width}x${image.height}`,
scaledSize: `${scaledWidth}x${scaledHeight}`,
scale: scale
});
}
catch (error) {
log.error("Error adding scaled layer:", error);
throw error;
}
}
convertTensorToImageData(tensor) {
try {
const shape = tensor.shape;
const height = shape[1];
const width = shape[2];
const channels = shape[3];
log.debug("Converting tensor:", {
shape: shape,
dataRange: {
min: tensor.min_val,
max: tensor.max_val
}
});
const imageData = new ImageData(width, height);
const data = new Uint8ClampedArray(width * height * 4);
const flatData = tensor.data;
const pixelCount = width * height;
for (let i = 0; i < pixelCount; i++) {
const pixelIndex = i * 4;
const tensorIndex = i * channels;
for (let c = 0; c < channels; c++) {
const value = flatData[tensorIndex + c];
const normalizedValue = (value - tensor.min_val) / (tensor.max_val - tensor.min_val);
data[pixelIndex + c] = Math.round(normalizedValue * 255);
}
data[pixelIndex + 3] = 255;
}
imageData.data.set(data);
return imageData;
}
catch (error) {
log.error("Error converting tensor:", error);
return null;
}
}
async createImageFromData(imageData) {
return new Promise((resolve, reject) => {
const canvas = document.createElement('canvas');
canvas.width = imageData.width;
canvas.height = imageData.height;
const ctx = canvas.getContext('2d', { willReadFrequently: true });
if (!ctx)
throw new Error("Could not create canvas context");
ctx.putImageData(imageData, 0, 0);
const img = new Image();
img.onload = () => resolve(img);
img.onerror = reject;
img.src = canvas.toDataURL();
});
}
async retryDataLoad(maxRetries = 3, delay = 1000) {
for (let i = 0; i < maxRetries; i++) {
try {
await this.initNodeData();
return;
}
catch (error) {
log.warn(`Retry ${i + 1}/${maxRetries} failed:`, error);
if (i < maxRetries - 1) {
await new Promise(resolve => setTimeout(resolve, delay));
}
}
}
log.error("Failed to load data after", maxRetries, "retries");
}
async processMaskData(maskData) {
try {
if (!maskData)
return;
log.debug("Processing mask data:", maskData);
if (Array.isArray(maskData)) {
maskData = maskData[0];
}
if (!maskData.shape || !maskData.data) {
throw new Error("Invalid mask data format");
}
if (this.canvas.canvasSelection.selectedLayers.length > 0) {
const maskTensor = await this.convertTensorToMask(maskData);
this.canvas.canvasSelection.selectedLayers[0].mask = maskTensor;
this.canvas.render();
log.info("Mask applied to selected layer");
}
}
catch (error) {
log.error("Error processing mask data:", error);
}
}
async loadImageFromCache(base64Data) {
return new Promise((resolve, reject) => {
const img = new Image();
img.onload = () => resolve(img);
img.onerror = reject;
img.src = base64Data;
});
}
async importImage(cacheData) {
try {
log.info("Starting image import with cache data");
const img = await this.loadImageFromCache(cacheData.image);
const mask = cacheData.mask ? await this.loadImageFromCache(cacheData.mask) : null;
const scale = Math.min(this.canvas.width / img.width * 0.8, this.canvas.height / img.height * 0.8);
const tempCanvas = document.createElement('canvas');
tempCanvas.width = img.width;
tempCanvas.height = img.height;
const tempCtx = tempCanvas.getContext('2d', { willReadFrequently: true });
if (!tempCtx)
throw new Error("Could not create temp context");
tempCtx.drawImage(img, 0, 0);
if (mask) {
const imageData = tempCtx.getImageData(0, 0, img.width, img.height);
const maskCanvas = document.createElement('canvas');
maskCanvas.width = img.width;
maskCanvas.height = img.height;
const maskCtx = maskCanvas.getContext('2d', { willReadFrequently: true });
if (!maskCtx)
throw new Error("Could not create mask context");
maskCtx.drawImage(mask, 0, 0);
const maskData = maskCtx.getImageData(0, 0, img.width, img.height);
for (let i = 0; i < imageData.data.length; i += 4) {
imageData.data[i + 3] = maskData.data[i];
}
tempCtx.putImageData(imageData, 0, 0);
}
const finalImage = new Image();
await new Promise((resolve) => {
finalImage.onload = resolve;
finalImage.src = tempCanvas.toDataURL();
});
const layer = {
id: '', // This will be set in addLayerWithImage
imageId: '', // This will be set in addLayerWithImage
name: 'Layer',
image: finalImage,
x: (this.canvas.width - img.width * scale) / 2,
y: (this.canvas.height - img.height * scale) / 2,
width: img.width * scale,
height: img.height * scale,
originalWidth: img.width,
originalHeight: img.height,
rotation: 0,
zIndex: this.canvas.layers.length,
blendMode: 'normal',
opacity: 1,
visible: true,
};
this.canvas.layers.push(layer);
this.canvas.updateSelection([layer]);
this.canvas.render();
this.canvas.saveState();
}
catch (error) {
log.error('Error importing image:', error);
}
}
async importLatestImage() {
try {
log.info("Fetching latest image from server...");
const response = await fetch('/ycnode/get_latest_image');
const result = await response.json();
if (result.success && result.image_data) {
log.info("Latest image received, adding to canvas.");
const img = new Image();
await new Promise((resolve, reject) => {
img.onload = resolve;
img.onerror = reject;
img.src = result.image_data;
});
await this.canvas.canvasLayers.addLayerWithImage(img, {}, 'fit');
log.info("Latest image imported and placed on canvas successfully.");
return true;
}
else {
throw new Error(result.error || "Failed to fetch the latest image.");
}
}
catch (error) {
log.error("Error importing latest image:", error);
alert(`Failed to import latest image: ${error.message}`);
return false;
}
}
async importLatestImages(sinceTimestamp, targetArea = null) {
try {
log.info(`Fetching latest images since ${sinceTimestamp}...`);
const response = await fetch(`/layerforge/get-latest-images/${sinceTimestamp}`);
const result = await response.json();
if (result.success && result.images && result.images.length > 0) {
log.info(`Received ${result.images.length} new images, adding to canvas.`);
const newLayers = [];
for (const imageData of result.images) {
const img = new Image();
await new Promise((resolve, reject) => {
img.onload = resolve;
img.onerror = reject;
img.src = imageData;
});
let processedImage = img;
// If there's a custom shape, clip the image to that shape
if (this.canvas.outputAreaShape && this.canvas.outputAreaShape.isClosed) {
processedImage = await this.clipImageToShape(img, this.canvas.outputAreaShape);
}
const newLayer = await this.canvas.canvasLayers.addLayerWithImage(processedImage, {}, 'fit', targetArea);
newLayers.push(newLayer);
}
log.info("All new images imported and placed on canvas successfully.");
return newLayers.filter(l => l !== null);
}
else if (result.success) {
log.info("No new images found since last generation.");
return [];
}
else {
throw new Error(result.error || "Failed to fetch latest images.");
}
}
catch (error) {
log.error("Error importing latest images:", error);
alert(`Failed to import latest images: ${error.message}`);
return [];
}
}
async clipImageToShape(image, shape) {
return new Promise((resolve, reject) => {
const { canvas, ctx } = createCanvas(image.width, image.height);
if (!ctx) {
reject(new Error("Could not create canvas context for clipping"));
return;
}
// Draw the image first
ctx.drawImage(image, 0, 0);
// Create a clipping mask using the shape
ctx.globalCompositeOperation = 'destination-in';
ctx.beginPath();
ctx.moveTo(shape.points[0].x, shape.points[0].y);
for (let i = 1; i < shape.points.length; i++) {
ctx.lineTo(shape.points[i].x, shape.points[i].y);
}
ctx.closePath();
ctx.fill();
// Create a new image from the clipped canvas
const clippedImage = new Image();
clippedImage.onload = () => resolve(clippedImage);
clippedImage.onerror = () => reject(new Error("Failed to create clipped image"));
clippedImage.src = canvas.toDataURL();
});
}
createMaskFromShape(shape, width, height) {
const { canvas, ctx } = createCanvas(width, height);
if (!ctx) {
throw new Error("Could not create canvas context for mask");
}
ctx.fillStyle = 'black';
ctx.fillRect(0, 0, width, height);
ctx.fillStyle = 'white';
ctx.beginPath();
ctx.moveTo(shape.points[0].x, shape.points[0].y);
for (let i = 1; i < shape.points.length; i++) {
ctx.lineTo(shape.points[i].x, shape.points[i].y);
}
ctx.closePath();
ctx.fill();
const imageData = ctx.getImageData(0, 0, width, height);
const maskData = new Float32Array(width * height);
for (let i = 0; i < imageData.data.length; i += 4) {
maskData[i / 4] = imageData.data[i] / 255;
}
return maskData;
}
}