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segDrawer.html
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segDrawer.html
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<html lang="en">
<head>
<!-- <link href="./all.css" rel="stylesheet"> -->
<link href="assets/css/all.min.css" rel="stylesheet">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha2/dist/css/bootstrap.min.css" rel="stylesheet">
<style>
body {
margin: 0;
height: 100vh;
display: flex;
justify-content: center;
align-items: center;
}
/*@font-face {
font-family: 'FontAwesome';
src: url('./fa-solid-900.ttf') format('truetype'),
url('./fa-solid-900.woff2') format('woff2');
font-weight: normal;
font-style: normal;
}*/
#canvas-wrapper {
position: relative;
width: 500px;
height: 500px;
}
#slider-wrapper {
display: none;
position: absolute; /* Add this line */
z-index: 10; /* Add this line */
top: 47px; /* Adjust this value */
right: 50px; /* Adjust this value */
}
#canvas {
position: absolute;
border: 1px solid black;
width: 100%;
height: 100%;
}
#image-canvas, #temp-canvas {
position: absolute;
width: 100%;
height: 100%;
}
.button-wrapper {
position: absolute;
top: 0;
right: 0;
padding: 10px;
display: flex;
flex-direction: column;
align-items: flex-end;
}
.button {
background-color: #4CAF50;
border: none;
border-radius: 8px;
color: white;
padding: 4px 8px;
text-align: center;
text-decoration: none;
display: inline-block;
font-size: 12px;
margin: 2px 0;
cursor: pointer;
width: 32px;
height: 32px;
}
#file-input-wrapper {
position: absolute;
top: 0;
left: 0;
width: 500px;
height: 500px;
cursor: pointer;
}
#file-input-wrapper input[type=file] {
opacity: 0;
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
cursor: pointer;
}
#spinner-container {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
}
#spinner-container span {
font-family: Arial, sans-serif;
font-size: 16px;
color: #333;
margin-top: 10px;
}
/* Sparkles */
.sparkles-container {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
overflow: hidden;
pointer-events: none;
opacity: 0; /* Hide the sparkles by default */
}
.sparkle {
position: absolute;
width: 8px;
height: 8px;
background-color: #fff;
border-radius: 50%;
animation: sparkle 4s linear infinite;
}
@keyframes sparkle {
0% {
transform: translateX(-10%) scale(0);
opacity: 0;
}
5% {
opacity: 1;
}
100% {
transform: translateX(110%) scale(1);
opacity: 0;
}
}
</style>
</head>
<body>
<div id="canvas-wrapper">
<canvas id="canvas"></canvas>
<canvas id="image-canvas"></canvas>
<canvas id="temp-canvas" style="pointer-events: none;"></canvas>
<div class="sparkles-container"></div>
<div class="button-wrapper">
<button class="button" id="remove-image"><i class="fas fa-times"></i></button>
<button class="button" id="draw-mask"><i class="fas fa-pencil"></i></button>
<button class="button" id="magic-tool"><i class="fas fa-wand-magic-sparkles"></i></button>
<button class="button" id="draw-rect"><i class="fas fa-shapes"></i></button>
<button class="button" id="seg-everything"><i class="fas fa-fill-drip"></i></button>
<button class="button" id="undo-path"><i class="fas fa-undo"></i></button>
<button class="button" id="eraser"><i class="fa-solid fa-eraser"></i></button>
<button class="button" id="save-images"><i class="fas fa-download"></i></button>
<button class="button" id="seg-video"><i class="fa-solid fa-film"></i></button>
</div>
<div id="slider-wrapper">
<input type="range" min="1" max="100" value="50" class="slider" id="brush-size">
</div>
<div id="file-input-wrapper">
<input type="file" id="file-input">
</div>
</div>
<div id="spinner-container" class="position-fixed top-50 start-50 translate-middle d-none">
<div class="spinner-border text-primary" role="status"></div>
<span style="color: #dc3545; font-size: 2em;">Preprocessing image...</span>
</div>
<script type="text/javascript">
document.addEventListener('contextmenu', function(event) {
event.preventDefault(); // Prevent the default context menu from appearing (right-click menu in browsers)
});
async function canvasToBlob(canvas) {
return new Promise((resolve, reject) => {
canvas.toBlob((blob) => {
if (blob) {
resolve(blob);
} else {
reject(new Error("Canvas to Blob conversion failed"));
}
});
});
}
async function blobToByteArray(blob) {
return new Uint8Array(await new Response(blob).arrayBuffer());
}
function randomRGBColor() {
const red = Math.floor(Math.random() * 256);
const green = Math.floor(Math.random() * 256);
const blue = Math.floor(Math.random() * 256);
return { r: red, g: green, b: blue};
}
// Magic tool functionality
const tolerance = 30;
const replacementColor = { r: 147, g: 112, b: 219 };
const alpha_255 = 191.25;
const alpha_1 = 1; // for manual drawer (avoid color overlay artifact when = 0.75)
const random_color = {};
for (let i = 1; i <= 255; i++) {
random_color[i] = randomRGBColor();
}
// canvas image xy to original image xy
function getXYLocationInOriImage(x, y) {
x -= scaledX;
y -= scaledY;
x /= scaleFactor;
y /= scaleFactor;
x = Math.round(x);
y = Math.round(y);
return { x, y };
}
// canvas idx to original image idx
function getIdxLocationInOriImage(idx) {
let x = idx % 500;
let y = Math.floor(idx / 500);
x -= scaledX;
y -= scaledY;
x /= scaleFactor;
y /= scaleFactor;
x = Math.round(x);
y = Math.round(y);
return y * originalUnresizedImageData.width + x;
}
// scaled image idx to original image idx
function imgidx2oriidx(idx) {
let { x, y } = idx2xy(idx);
x /= scaleFactor;
y /= scaleFactor;
x = Math.round(x);
y = Math.round(y);
return y * originalUnresizedImageData.width + x;
}
// event location is on canvas, which is different from the original image size
function getEventLocationInOriImage(event) {
let x = event.offsetX;
let y = event.offsetY;
return getXYLocationInOriImage(x, y);
}
// // scaled image xy to scaled image idx
// function xy2idx(x, y) {
// return y * scaledWidth + x;
// }
// // scaled image idx to scaled image xy
// function idx2xy(idx) {
// let x = idx % scaledWidth;
// let y = Math.floor(idx / scaledWidth);
// return { x, y };
// }
// only seg_everything, rect, and magic tool need to use this function
function getImagedataFromImageClass(Image, masktype) {
// Create a original size element and draw the image onto it
let tmpcanvas = document.createElement('canvas');
tmpcanvas.width = originalUnresizedImageData.width;
tmpcanvas.height = originalUnresizedImageData.height;
let tmpcontext = tmpcanvas.getContext('2d');
tmpcontext.drawImage(Image, 0, 0);
// Get the image data from the canvas
let imageData = tmpcontext.getImageData(0, 0, tmpcanvas.width, tmpcanvas.height);
let pixelData = imageData.data;
const imageMask = maskcontext.getImageData(0, 0, maskcanvas.width, maskcanvas.height);
const data = imageMask.data;
if (masktype == 'everything') {
// Get the pixel indices of the mask
for (let i = 0; i < pixelData.length; i += 4) {
if (pixelData[i] > 0) {
data[i] = random_color[pixelData[i]].r; // red
data[i + 1] = random_color[pixelData[i]].g; // green
data[i + 2] = random_color[pixelData[i]].b; // blue
data[i + 3] = alpha_255; // alpha
}
}
maskcontext.putImageData(imageMask, 0, 0);
oriDrawnPaths.push({
masks: pixelData,
type: "everything",
});
}
else if (masktype == "rect") {
let pixels = [];
// Get the pixel indices of the mask
for (let i = 0; i < pixelData.length; i += 4) {
if (pixelData[i] == 255 && pixelData[i + 1] == 255 && pixelData[i + 2] == 255) {
pixels.push(i);
}
}
for (let i = 0; i < pixels.length; i += 1) {
data[pixels[i]] = replacementColor.r; // red
data[pixels[i] + 1] = replacementColor.g; // green
data[pixels[i] + 2] = replacementColor.b; // blue
data[pixels[i] + 3] = alpha_255; // alpha
}
maskcontext.putImageData(imageMask, 0, 0);
oriDrawnPaths.push({
points: pixels,
type: "rect",
});
}
else if (masktype == "magic") {
let pixels = [];
// Get the pixel indices of the mask
for (let i = 0; i < pixelData.length; i += 4) {
if (pixelData[i] == 255 && pixelData[i + 1] == 255 && pixelData[i + 2] == 255) {
pixels.push(i);
}
}
// we don't add anything to the oriDrawnPaths while interactive mode
oriInteractivePaths.push(pixels);
}
else {
// do nothing
}
// Create a canvas size element and draw the image onto it
tmpcanvas = document.createElement('canvas');
tmpcanvas.width = canvas.width;
tmpcanvas.height = canvas.height;
tmpcontext = tmpcanvas.getContext('2d');
tmpcontext.drawImage(Image, scaledX, scaledY, scaledWidth, scaledHeight);
// Get the image data from the canvas
imageData = tmpcontext.getImageData(0, 0, tmpcanvas.width, tmpcanvas.height);
pixelData = imageData.data;
return imageData.data;
}
function magicToolHandler(event) {
if (!isMagicToolActive) return;
console.log("magic tool handler")
// step 1: get starting point
const { x, y } = getEventLocationInOriImage(event);
promptPoints.push({
type: (event.which == 1) ? true : false,
origPoint: [event.offsetX, event.offsetY],
scaledPoint: [x, y],
});
// step 2: get image data for flood fill
const imageWidth = imageCanvas.width;
const imageHeight = imageCanvas.height;
const imageData = imageContext.getImageData(0, 0, imageWidth, imageHeight);
const pixelData = imageData.data;
const formData = new FormData();
const typeList = [];
const clickList = [];
for (const thisPrompt of promptPoints) {
typeList.push(thisPrompt.type ? 1 : 0);
clickList.push(thisPrompt.scaledPoint[0]);
clickList.push(thisPrompt.scaledPoint[1]);
}
formData.append("type", typeList);
formData.append("click_list", clickList);
// Send a POST request to the server API
fetch("/click", {
method: "POST",
body: formData,
})
.then((response) => response.json())
.then((data) => {
let pixels = [];
// Get the base64-encoded image strings from the JSON response
const maskBase64 = data.masks;
const maskImage = new Image();
maskImage.src = `data:image/png;base64,${maskBase64}`;
maskImage.onload = function() {
const pixelData = getImagedataFromImageClass(maskImage, "magic");
console.log(pixelData.length)
// Get the pixel indices of the mask
for (let i = 0; i < pixelData.length; i += 4) {
if (pixelData[i] == 255 && pixelData[i + 1] == 255 && pixelData[i + 2] == 255) {
pixels.push(i);
}
}
console.log(pixels.length)
// step 4: put magic mask on canvas
redrawPaths(canvas, drawnPaths);
putDataOnCanvas(canvas, pixels);
for (const thisPrompt of promptPoints) {
drawPromptPointOnClick(thisPrompt, canvas);
}
// step 5: Add the magic mask to drawnPaths array
interactivePaths.push(pixels);
};
})
.catch((error) => {
console.error("Error:", error);
}).finally(() => {
// // Hide the spinner
// spinnerContainer.classList.add("d-none");
});
}
function drawPromptPointOnClick(thisPrompt, canvas) {
let x = thisPrompt.origPoint[0];
let y = thisPrompt.origPoint[1];
const fillColor = `rgba(255, 255, 255, 0.75)`;
const strokeColor = thisPrompt.type ? `green` : `red`;
const context = canvas.getContext("2d");
context.beginPath();
context.arc(x, y, 3, 0, Math.PI * 2);
context.fillStyle = fillColor;
context.fill();
context.strokeStyle = strokeColor;
context.stroke();
}
function putDataOnCanvas(thisCanvas, pixels) {
const thisContext = thisCanvas.getContext("2d");
const canvasData = thisContext.getImageData(
0,
0,
thisCanvas.width,
thisCanvas.height
);
const data = canvasData.data;
for (let i = 0; i < pixels.length; i += 1) {
data[pixels[i]] = replacementColor.r; // red
data[pixels[i] + 1] = replacementColor.g; // green
data[pixels[i] + 2] = replacementColor.b; // blue
data[pixels[i] + 3] = alpha_255; // alpha
}
thisContext.putImageData(canvasData, 0, 0);
}
const fileInput = document.getElementById('file-input');
let zipfileBase64 = null;
let imageName = "original_image";
let videoName = "original_video";
// for drawer
const canvas = document.getElementById('canvas');
const context = canvas.getContext('2d');
// for image
const imageCanvas = document.getElementById('image-canvas');
const imageContext = imageCanvas.getContext('2d');
imageCanvas.style.zIndex = -1;
// for rect real-time visualization
const tempCanvas = document.getElementById('temp-canvas');
const tempContext = tempCanvas.getContext('2d');
tempCanvas.style.zIndex = 1;
// for image-size mask canvas
const maskcanvas = document.createElement('canvas');
const maskcontext = maskcanvas.getContext('2d');
canvas.width = 500;
canvas.height = 500;
imageCanvas.width = 500;
imageCanvas.height = 500;
tempCanvas.width = 500;
tempCanvas.height = 500;
// for saving mask purpose
let scaledWidth = -1;
let scaledHeight = -1;
let scaledX = -1;
let scaledY = -1;
// global variables for image
let scaleFactor = -1;
let originalUnresizedImageData;
let originalUnresizedMaskData;
// Prompt points in magic tool
const promptPoints = [];
const interactivePaths = [];
const oriInteractivePaths = [];
// Add a new array to store drawn paths
const drawnPaths = [];
const oriDrawnPaths = [];
// for magic tool
let isMagicToolActive = false;
// for draw rect
let isDrawingRect = false;
let rectStartX = 0;
let rectStartY = 0;
// for eraser
let isErasing = false;
// for draw mask, keep track of whether user is currently drawing
let isDrawing = false;
let isDown = false;
let lastX, lastY; // keep track of last position of the pointer
const slider = document.getElementById("brush-size");
let brushSize = slider.value;
const removeImageButton = document.getElementById('remove-image');
const drawMaskButton = document.getElementById('draw-mask');
const magicToolButton = document.getElementById('magic-tool');
const fileInputWrapper = document.getElementById('file-input-wrapper');
const drawRectButton = document.getElementById('draw-rect');
function stopDrawing() {
canvas.style.cursor = "auto";
// stop drawing
isDrawing = false;
sliderWrapper.style.display = 'none';
}
function stopMagicDrawing() {
canvas.style.cursor = "auto";
// stop magic drawing
try {
canvas.removeEventListener("mousedown", magicToolHandler);
console.log('remove magic tool handler')
} catch (error) {
console.log(error) // do nothing
}
isMagicToolActive = false;
if (interactivePaths.length != 0) {
const mask_idx = interactivePaths.length - 1;
const lastPath = interactivePaths.pop();
const oriLastPath = oriInteractivePaths.pop();
promptPoints.splice(0);
interactivePaths.splice(0);
oriInteractivePaths.splice(0);
// draw on scaled-size canvas
drawnPaths.push({
points: lastPath,
type: "magic",
});
redrawPaths(canvas, drawnPaths);
// draw on original-size canvas
oriDrawnPaths.push({
points: oriLastPath,
type: "magic",
});
redrawPaths(maskcanvas, oriDrawnPaths);
const formData = new FormData();
formData.append("mask_idx", mask_idx);
fetch("/finish_click", {
method: "POST",
body: formData,
})
.then((response) => response.json())
.then((data) => {
console.log("Success:", data);
})
.catch((error) => {
console.error("Error:", error);
})
.finally(() => {
// // Hide the spinner
// spinnerContainer.classList.add("d-none");
});
}
}
function stopErasing() {
canvas.style.cursor = "auto";
// stop erasing
isErasing = false;
}
function stopRecting() {
canvas.style.cursor = "auto";
// stop draw recting
isDrawingRect = false;
}
function hideFileInput() {
fileInputWrapper.style.display = 'none';
}
function showFileInput() {
fileInputWrapper.style.display = 'block';
}
// Add event listener for the draw-rect button
drawRectButton.addEventListener('click', () => {
// stop any other drawing
stopDrawing();
stopMagicDrawing();
stopErasing();
// stop drawing
if (isDrawingRect) {
canvas.style.cursor = 'auto';
isDrawingRect = false;
}
// start drawing
else {
canvas.style.cursor = `crosshair`; // change cursor to a crosshair
isDrawingRect = true;
}
});
// for processing video
async function getFirstFrameAsBlob(file) {
return new Promise((resolve, reject) => {
videoName = file.name.split('.')[0];
console.log(videoName)
const video = document.createElement('video');
video.preload = 'auto'; // Preload video
video.src = URL.createObjectURL(file);
// Trigger seeked event after metadata loaded
video.addEventListener('loadedmetadata', function() {
this.currentTime = 0;
}, false);
// Extract first frame when seek operation completes
video.addEventListener('seeked', function() {
const canvas = document.createElement('canvas');
const context = canvas.getContext('2d');
canvas.width = video.videoWidth;
canvas.height = video.videoHeight;
// Draw the first frame of the video onto the canvas
context.drawImage(video, 0, 0, video.videoWidth, video.videoHeight);
// Convert the canvas to a blob
canvas.toBlob(blob => {
// Convert blob to file
const file = new File([blob], 'frame.png', { type: 'image/png' });
resolve(file);
});
// Remove the video element after capturing the frame
video.remove();
}, false);
// When video can be played through, upload to server
video.addEventListener('canplaythrough', function() {
const spinnerContainer = document.getElementById("spinner-container");
const spinnerText = spinnerContainer.querySelector('span');
// Change the spinner text
spinnerText.textContent = "Uploading video...";
// Show the spinner
spinnerContainer.classList.remove("d-none");
// Create new FormData instance and append the video file
const formData = new FormData();
formData.append("video", file);
// Upload the video file to the server
fetch("/video", {
method: "POST",
body: formData,
})
.then((response) => response.json())
.then((data) => {
console.log("Success:", data);
})
.catch((error) => {
console.error("Error:", error);
})
.finally(() => {
// Hide the spinner
spinnerContainer.classList.add("d-none");
console.log('finally')
});
}, false);
});
}
// for processing image
function handleImage(file, is_video) {
// Extract and store the uploaded image name
imageName = file.name.split('.')[0];
console.log(imageName)
const image = new Image();
image.onload = async () => {
const spinnerContainer = document.getElementById("spinner-container");
if (!is_video) {
const spinnerText = spinnerContainer.querySelector('span');
// Change the spinner text
spinnerText.textContent = "Preprocessing image...";
// Show the spinner
spinnerContainer.classList.remove("d-none");
}
// for keeping original sized image
const tmp_canvas = document.createElement('canvas');
tmp_canvas.width = image.width;
tmp_canvas.height = image.height;
const ctx = tmp_canvas.getContext('2d');
// for keeping original sized mask
maskcanvas.width = image.width;
maskcanvas.height = image.height;
ctx.drawImage(image, 0, 0, image.width, image.height);
originalUnresizedImageData = ctx.getImageData(0, 0, image.width, image.height);
scaleFactor = Math.min(imageCanvas.width / image.width, imageCanvas.height / image.height);
scaledWidth = image.width * scaleFactor;
scaledHeight = image.height * scaleFactor;
scaledX = (imageCanvas.width - scaledWidth) / 2;
scaledY = (imageCanvas.height - scaledHeight) / 2;
// reset width and height can refresh the canvas so that prev image will not be kept
imageCanvas.width = 500;
imageCanvas.height = 500;
imageContext.drawImage(image, scaledX, scaledY, scaledWidth, scaledHeight);
hideFileInput();
if (is_video) {
return;
}
const imageBlob = await canvasToBlob(tmp_canvas);
const imageByteArray = await blobToByteArray(imageBlob);
const formData = new FormData();
formData.append("image", new Blob([imageByteArray]), "image.png");
fetch("/image", {
method: "POST",
body: formData,
})
.then((response) => response.json())
.then((data) => {
console.log("Success:", data);
})
.catch((error) => {
console.error("Error:", error);
}).finally(() => {
// Hide the spinner
spinnerContainer.classList.add("d-none");
console.log('finally')
});
};
image.src = URL.createObjectURL(file);
}
fileInput.addEventListener('change', async (event) => {
const file = event.target.files[0];
const fileType = file.type;
zipfileBase64 = null;
const validVideoTypes = ['video/mp4', 'video/quicktime'];
if (validVideoTypes.includes(fileType)) {
console.log("a video file")
const firstFrameBlob = await getFirstFrameAsBlob(file);
console.log(firstFrameBlob);
handleImage(firstFrameBlob, 1);
} else {
console.log(file);
handleImage(file, 0);
}
});
removeImageButton.addEventListener('click', () => {
imageContext.clearRect(0, 0, imageCanvas.width, imageCanvas.height); // clear the image canvas
context.clearRect(0, 0, canvas.width, canvas.height); // clear the drawer canvas
stopDrawing();
stopErasing();
stopMagicDrawing();
stopRecting();
while (drawnPaths.length > 0) {
drawnPaths.pop();
}
while (oriDrawnPaths.length > 0) {
oriDrawnPaths.pop();
}
showFileInput();
// Reset the file input value, force the browser to treat the re-uploaded file as a new file
fileInput.value = '';
});
slider.addEventListener("input", () => {
brushSize = slider.value;
});
const sliderWrapper = document.getElementById('slider-wrapper');
sliderWrapper.style.display = 'none';
drawMaskButton.addEventListener('click', (event) => {
stopMagicDrawing();
stopErasing();
stopRecting();
// toggle slider visibility
sliderWrapper.style.display = (sliderWrapper.style.display == 'none') ? 'block' : 'none';
// stop drawing
if (isDrawing) {
canvas.style.cursor = 'auto';
isDrawing = false;
}
// start drawing
else {
canvas.style.cursor = `crosshair`; // change cursor to a crosshair
isDrawing = true;
}
});
canvas.addEventListener('mousedown', (event) => {
if (isDrawing || isErasing) {
lastX = event.offsetX;
lastY = event.offsetY;
isDown = true;
// Start a new path
drawnPaths.push({
type: isErasing ? 'eraser' : 'brush',
points: [],
lineWidth: brushSize,
});
oriDrawnPaths.push({
type: isErasing ? 'eraser' : 'brush',
points: [],
lineWidth: brushSize / scaleFactor,
});
} else if (isDrawingRect) {
rectStartX = event.offsetX;
rectStartY = event.offsetY;
isDown = true;
}
});
canvas.addEventListener('mouseup', () => {
if (isDrawingRect && isDown) {
// Clear the temporary canvas
tempContext.clearRect(0, 0, tempCanvas.width, tempCanvas.height);
// context.beginPath();
// context.rect(rectStartX, rectStartY, rectEndX - rectStartX, rectEndY - rectStartY);
// context.strokeStyle = 'rgba(147, 112, 219, 1)';
// context.lineWidth = 2;
// context.stroke();
// get start and end points of the rect
const {x: startX, y: startY} = getXYLocationInOriImage(rectStartX, rectStartY);
const {x: endX, y: endY} = getXYLocationInOriImage(event.offsetX, event.offsetY);
console.log(rectStartX, rectStartY, event.offsetX, event.offsetY);
console.log(startX, startY, endX, endY);
const formData = new FormData();
formData.append("start_x", startX);
formData.append("start_y", startY);
formData.append("end_x", endX);
formData.append("end_y", endY);
// Send a POST request to the server API
fetch("/rect", {
method: "POST",
body: formData,
})
.then((response) => response.json())
.then((data) => {
// console.log("Success:", data.masks);
let pixels = [];
// Get the base64-encoded image strings from the JSON response
const maskBase64 = data.masks;
const maskImage = new Image();
maskImage.src = `data:image/png;base64,${maskBase64}`;
maskImage.onload = function() {
const pixelData = getImagedataFromImageClass(maskImage, "rect");
// console.log(pixelData.length)
// let uniquePixelData = [...new Set(pixelData)];
// console.log(uniquePixelData);
// Get the pixel indices of the mask
for (let i = 0; i < pixelData.length; i += 4) {
if (pixelData[i] == 255 && pixelData[i + 1] == 255 && pixelData[i + 2] == 255) {
pixels.push(i);
}
}
console.log(pixels.length)
// step 4: put magic mask on canvas
const canvasData = context.getImageData(0, 0, canvas.width, canvas.height);
const data = canvasData.data;
console.log(data.length)
for (let i = 0; i < pixels.length; i += 1) {
data[pixels[i]] = replacementColor.r; // red
data[pixels[i] + 1] = replacementColor.g; // green
data[pixels[i] + 2] = replacementColor.b; // blue
data[pixels[i] + 3] = alpha_255; // alpha
}
context.putImageData(canvasData, 0, 0);
// step 5: Add the rect mask to drawnPaths array
drawnPaths.push({
points: pixels,
type: "rect",
});
};
})
.catch((error) => {
console.error("Error:", error);
}).finally(() => {
// // Hide the spinner
// spinnerContainer.classList.add("d-none");
});
}
isDown = false;
});
canvas.addEventListener('mousemove', (event) => {
if ((isDrawing || isErasing) && isDown) {
const x = event.offsetX;
const y = event.offsetY;
// Check if the x and y coordinates are within the image boundaries
if (x >= scaledX && x < scaledX+scaledWidth && y >= scaledY && y < scaledY+scaledHeight &&
lastX >= scaledX && lastX < scaledX+scaledWidth && lastY >= scaledY && lastY < scaledY+scaledHeight) {
context.beginPath();
context.moveTo(lastX, lastY);
context.lineTo(x, y);
if (isErasing) {
context.globalCompositeOperation = 'destination-out';
} else {
context.globalCompositeOperation = 'source-over';
}
context.strokeStyle = `rgba(147, 112, 219, ${alpha_1})`;
context.lineWidth = brushSize;
context.stroke();
context.beginPath();
context.arc(x, y, brushSize / 2, 0, 2 * Math.PI);
context.fillStyle = `rgba(147, 112, 219, ${alpha_1})`;
context.fill();
// Add the point to the current path
const currentPath = drawnPaths[drawnPaths.length - 1];
currentPath.points.push({ fromX: lastX, fromY: lastY, toX: x, toY: y });
const oriCurrentPath = oriDrawnPaths[oriDrawnPaths.length - 1];
const {x: orilastX, y: orilastY} = getXYLocationInOriImage(lastX, lastY);
const {x: orix, y: oriy} = getXYLocationInOriImage(x, y);
oriCurrentPath.points.push({ fromX: orilastX, fromY: orilastY, toX: orix, toY: oriy });
maskcontext.beginPath();
maskcontext.moveTo(orilastX, orilastY);
maskcontext.lineTo(orix, oriy);
if (isErasing) {
maskcontext.globalCompositeOperation = 'destination-out';
} else {
maskcontext.globalCompositeOperation = 'source-over';
}
maskcontext.strokeStyle = `rgba(147, 112, 219, ${alpha_1})`;
maskcontext.lineWidth = brushSize / scaleFactor;
maskcontext.stroke();
maskcontext.beginPath();
maskcontext.arc(orix, oriy, brushSize / scaleFactor / 2, 0, 2 * Math.PI);
maskcontext.fillStyle = `rgba(147, 112, 219, ${alpha_1})`;
maskcontext.fill();
}
lastX = x;