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console.log("hello from poseEditor.js")
var canvas = null;
var ctx = null;
var canvasBg = null;
const wheelDisplayTime = 500;
const limbSeq = [
[1, 2], [2, 3], [3, 4], // 右腕
[1, 5], [5, 6], [6, 7], // 左腕
[1, 8], [8, 9], [9, 10], // 右胴→右脚
[1, 11], [11, 12], [12, 13], // 左胴→左脚
[1, 0], // 首
[0, 14], [14, 16], // 右目
[0, 15], [15, 17] // 左目
];
function findParentNodeIndex(nodeIndex) {
// limbSeqの各要素の2番目の要素がjointIndexの場合、その要素の1番目の要素を返す
// 見つからないばあいは-1を返す
limbIndex = limbSeq.findIndex((limb) => limb[1] === nodeIndex);
return limbIndex === -1 ? -1 : limbSeq[limbIndex][0];
}
function cutOffLimb(pose, cutOffIndex) {
console.log(`cutOffLimb: ${cutOffIndex}`);
// 末端ノードの座標を削除する
var newPose = deepCopy(pose);
for (let i = 0; i < 18; i++) {
if (newPose[i] == null) {continue;}
// ルートまで検索し、その間にcuttOffIndexがあれば削除
var curr = i;
while (curr !== 1) {
console.log(`checking: ${i} -> ${curr}`);
let parent = findParentNodeIndex(curr);
if (parent === cutOffIndex) {
console.log(`cutOffLimb: ${i} -> ${cutOffIndex}`);
newPose[i] = null;
break;
}
curr = parent;
}
}
return newPose;
}
function repairPose(sourcePose) {
// TODO: ループには対応してないかも
var pose = sourcePose;
var newPose = new Array(18)
for (var k = 0; k < 3; k++) {
var processed = 0; // イテレーション用
for (let i = 0; i < 18; i++) {
if (pose[i] == null) {
let parent = findParentNodeIndex(i);
if (parent === -1) {continue;} // あり得ない
if (pose[parent] == null) {
console.log(`repair failed(A): ${i} -> parent loss`);
continue;
}
// サンプルデータから引っ張ってくる
var v = sampleCandidateSource[i].map((x, j) => x - sampleCandidateSource[parent][j]);
newPose[i] = pose[parent].map((x, j) => x + v[j]);
console.log(`repaired: ${i} -> ${newPose[newPose.length - 1]}`);
processed++;
} else {
newPose[i] = pose[i].map(x => x);
}
}
if (processed === 0) {break;}
pose = newPose;
}
return newPose;
}
function deepCopy(arr) {
return JSON.parse(JSON.stringify(arr));
}
function distSq(p0, p1) {
return (p0[0] - p1[0]) ** 2 + (p0[1] - p1[1]) ** 2;
}
// poseDataの形式:[[[x1, y1], [x2, y2], ...],[[x3, y3], [x4, y4], ...], ...]
// 各要素が人間
// 人間の各要素が関節
function poseDataToCandidateAndSubset(poseData) {
let candidate = [];
let subset = [];
for (let i = 0; i < poseData.length; i++) {
let person = poseData[i];
let subsetElement = [];
for (let j = 0; j < person.length; j++) {
candidate.push(person[j]);
subsetElement.push(candidate.length - 1);
}
subset.push(subsetElement);
}
return [candidate, subset];
}
// サンプルデータ
const sampleCandidateSource = [[235, 158],[234, 220],[193, 222],[138, 263],[89, 308],[276, 220],[325, 264],[375, 309],[207, 347],[203, 433],[199, 523],[261, 347],[262, 430],[261, 522],[227, 148],[245, 148],[208, 158],[258, 154]].map((p) => [p[0], p[1] - 70]);
const sampleSubsetElementSource = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17];
// const sampleCandidateSource = [[618.00, 0.00], [618.00, 44.00], [304.00, 81.00], [482.00, 96.00], [66.00, 270.00], [171.00, 280.00], [618.00, 82.00], [307.00, 112.00], [460.00, 143.00], [0.00, 301.00], [65.00, 301.00], [172.00, 303.00], [584.00, 86.00], [275.00, 119.00], [420.00, 139.00], [0.00, 301.00], [41.00, 301.00], [144.00, 303.00], [544.00, 131.00], [348.00, 139.00], [262.00, 160.00], [0.00, 337.00], [52.00, 339.00], [130.00, 348.00], [570.00, 175.00], [283.00, 177.00], [78.00, 338.00], [172.00, 380.00], [651.00, 78.00], [338.00, 111.00], [505.00, 144.00], [92.00, 301.00], [198.00, 305.00], [661.00, 132.00], [349.00, 156.00], [541.00, 179.00], [106.00, 336.00], [203.00, 348.00], [305.00, 159.00], [665.00, 160.00], [563.00, 192.00], [80.00, 343.00], [181.00, 385.00], [614.00, 205.00], [291.00, 220.00], [432.00, 320.00], [152.00, 372.00], [43.00, 380.00], [0.00, 386.00], [623.00, 281.00], [306.00, 290.00], [92.00, 357.00], [509.00, 434.00], [304.00, 357.00], [622.00, 368.00], [47.00, 394.00], [0.00, 395.00], [142.00, 405.00], [535.00, 565.00], [655.00, 200.00], [337.00, 217.00], [467.00, 322.00], [191.00, 372.00], [83.00, 375.00], [344.00, 282.00], [655.00, 282.00], [103.00, 343.00], [237.00, 368.00], [22.00, 377.00], [0.00, 379.00], [460.00, 459.00], [305.00, 352.00], [638.00, 355.00], [0.00, 401.00], [110.00, 412.00], [411.00, 570.00], [608.00, 0.00], [608.00, 40.00], [297.00, 75.00], [469.00, 84.00], [0.00, 261.00], [58.00, 263.00], [165.00, 275.00], [625.00, 0.00], [625.00, 39.00], [309.00, 74.00], [486.00, 83.00], [71.00, 264.00], [180.00, 276.00], [599.00, 0.00], [599.00, 44.00], [284.00, 80.00], [440.00, 93.00], [48.00, 271.00], [0.00, 272.00], [157.00, 277.00], [634.00, 0.00], [633.00, 41.00], [319.00, 77.00], [79.00, 269.00], [190.00, 277.00]];
// const sampleSubsetElementSource = [1.00,6.00,12.00,18.00,24.00,28.00,33.00,39.00,43.00,49.00,54.00,59.00,65.00,72.00,77.00,84.00,90.00,97.00,32.98,18.00],[5.00,11.00,17.00,23.00,27.00,32.00,37.00,42.00,46.00,-1.00,-1.00,62.00,67.00,-1.00,82.00,88.00,95.00,100.00,25.45,15.00],[4.00,10.00,16.00,22.00,26.00,31.00,36.00,41.00,47.00,51.00,57.00,63.00,66.00,74.00,81.00,87.00,93.00,99.00,26.97,18.00],[3.00,8.00,14.00,19.00,25.00,30.00,35.00,40.00,45.00,52.00,58.00,61.00,70.00,75.00,79.00,86.00,92.00,-1.00,30.45,17.00],[2.00,7.00,13.00,20.00,-1.00,29.00,34.00,38.00,44.00,50.00,53.00,60.00,64.00,71.00,78.00,85.00,91.00,98.00,27.89,17.00],[0.00,-1.00,-1.00,-1.00,-1.00,-1.00,-1.00,-1.00,-1.00,-1.00,-1.00,-1.00,-1.00,-1.00,76.00,83.00,-1.00,96.00,3.33,4.00];
function makePoseFromCandidateAndSubsetElement(candidate, subsetElement) {
var pose = [];
for (let j = 0 ; j < 18; j++) {
let i = subsetElement[j];
pose.push(i < 0 || candidate[i] == null ? null : candidate[i].map((x)=>x));
}
return pose;
}
function makePoseDataFromCandidateAndSubset(candidate, subset) {
return subset.map(subsetElement => makePoseFromCandidateAndSubsetElement(candidate, subsetElement));
}
function addPerson() {
var dx = Math.random() * 100;
var dy = Math.random() * 100;
poseData.push(
makePoseFromCandidateAndSubsetElement(
sampleCandidateSource.map(point => [point[0] + dx, point[1] + dy]),
sampleSubsetElementSource));
addHistory();
Redraw();
}
function removePerson(personIndex) {
poseData.splice(personIndex, 1);
addHistory();
Redraw();
}
function repairPerson(personIndex) {
poseData[personIndex] = repairPose(poseData[personIndex]);
addHistory();
Redraw();
}
function cutOffPersonLimb(personIndex, limbIndex) {
poseData[personIndex] = cutOffLimb(poseData[personIndex], limbIndex);
console.log(poseData[personIndex]);
console.log(poseData);
addHistory();
Redraw();
}
function toggleHideNode(personIndex, nodeIndex) {
poseData[personIndex][nodeIndex][2] = !poseData[personIndex][nodeIndex][2];
}
// ドラッグ中の各キーが押されているかどうかのフラグ
var keyDownFlags = {};
// マウスカーソル
var mouseCursor = [-1, -1];
function cross(lhs, rhs) {return lhs[0] * rhs[1] - lhs[1] * rhs[0];}
function dot(lhs, rhs) {return lhs[0] * rhs[0] + lhs[1] * rhs[1];}
function directedAngleTo(lhs, rhs) {return Math.atan2(cross(lhs, rhs), dot(lhs, rhs));}
function isMouseOnCanvas() {
// mouseCursorがcanvasの範囲内にあるかどうかを判定
var rect = canvas.getBoundingClientRect();
var f = 0 <= mouseCursor[0] && mouseCursor[0] <= rect.width && 0 <= mouseCursor[1] && mouseCursor[1] <= rect.height;
return f;
}
function clearCanvas() {
var w = canvas.width;
var h = canvas.height;
ctx.fillStyle = 'black';
ctx.fillRect(0, 0, w, h);
}
function drawBackground() {
if (canvasBg != null) {
ctx.drawImage(canvasBg, 0, 0);
}
}
function resizeCanvas(width, height) {
canvas.width = width ? width : canvas.width;
canvas.height = height ? height : canvas.height;
Redraw();
}
function calculateCenter(shape) {
var center = shape.reduce(function(acc, point) {
if (point === null) {
acc[0] += point[0];
acc[1] += point[1];
}
return acc;
}, [0, 0]);
center[0] /= shape.length;
center[1] /= shape.length;
return center;
}
// v2d -> v3d
function rotateX(vector, angle) {
var x = vector[0];
var y = vector[1];
var z = 0;
// X軸に対して回転する
var x1 = x;
var y1 = y * Math.cos(angle) - z * Math.sin(angle);
var z1 = y * Math.sin(angle) + z * Math.cos(angle);
return [x1, y1, z1];
}
// v2d -> v3d
function rotateY(vector, angle) {
var x = vector[0];
var y = vector[1];
var z = 0;
// Y軸に対して回転する
var x1 = x * Math.cos(angle) + z * Math.sin(angle);
var y1 = y;
var z1 = -x * Math.sin(angle) + z * Math.cos(angle);
return [x1, y1, z1];
}
// v3d -> v2d
function perspectiveProjection(vector, cameraDistance) {
var x = vector[0];
var y = vector[1];
var z = vector[2];
if (z === 0) {
return [x, y];
}
var scale = cameraDistance / (cameraDistance - z);
var x1 = x * scale;
var y1 = y * scale;
return [x1, y1];
}
// v2d -> v3d
function rotateAndProject(f, p, c, angle) {
var v = [p[0] - c[0], p[1] - c[1]];
var v1 = f(v, angle);
var v2 = perspectiveProjection(v1, 500);
return [v2[0] + c[0], v2[1] + c[1]];
}
function drawBodyPose(saving) {
let stickWidth = 4;
let imageSize = Math.min(canvas.width, canvas.height);
stickWidth *= imageSize / 512;
const colors = [[255, 0, 0], [255, 85, 0], [255, 170, 0], [255, 255, 0], [170, 255, 0], [85, 255, 0], [0, 255, 0],
[0, 255, 85], [0, 255, 170], [0, 255, 255], [0, 170, 255], [0, 85, 255], [0, 0, 255], [85, 0, 255],
[170, 0, 255], [255, 0, 255], [255, 0, 170], [255, 0, 85]];
ctx.globalAlpha = 0.6;
// edge
for (let i = 0; i < poseData.length; i++) {
const pose = poseData[i];
for (let j = 0; j < 17; j++) {
const p = pose[limbSeq[j][0]];
const q = pose[limbSeq[j][1]];
if (p == null || q == null) continue;
if (p[2] || q[2]) { continue; }
const [X0, Y0] = p;
const [X1, Y1] = q;
let angle = Math.atan2(Y1 - Y0, X1 - X0);
let magnitude = ((X0 - X1) ** 2 + (Y0 - Y1) ** 2) ** 0.5
let polygon = new Path2D();
polygon.ellipse((X0+X1)/2, (Y0+Y1)/2, magnitude / 2, stickWidth, angle, 0, 2 * Math.PI);
ctx.fillStyle = `rgb(${colors[j].join(',')})`;
ctx.fill(polygon);
}
}
ctx.globalAlpha = 1.0;
// node
for (let i = 0; i < poseData.length; i++) {
const pose = poseData[i];
ctx.font = '12px serif';
for (let j = 0; j < 18; j++) {
const p = pose[j];
if (p == null) continue;
const [x, y] = p;
if (p[2]) {
if (!saving) {
ctx.beginPath();
ctx.arc(x, y, stickWidth, 0, 2 * Math.PI);
ctx.lineWidth = 1;
ctx.strokeStyle = `rgb(${colors[j].join(',')})`;
ctx.stroke();
}
} else {
ctx.beginPath();
ctx.arc(x, y, stickWidth, 0, 2 * Math.PI);
ctx.fillStyle = `rgb(${colors[j].join(',')})`;
ctx.fill();
}
// ctx.fillStyle = 'rgb(255,255,255)'
// ctx.fillText(j, x-3, y+4);
}
}
}
let lastWheeling = 0;
function drawUI() {
if (keyDownFlags['Space'] || keyDownFlags['BracketLeft'] || keyDownFlags['BracketRight'] ||
new Date().getTime() - lastWheeling < wheelDisplayTime) {
ctx.beginPath();
ctx.lineWidth=4;
ctx.arc(mouseCursor[0], mouseCursor[1], dragRange, 0, 2 * Math.PI);
ctx.strokeStyle = 'rgb(255,255,255)';
ctx.stroke();
}
if (isDragging && (dragMode == "rotate" || dragMode == "rotate2")) {
ctx.beginPath();
ctx.lineWidth=1;
ctx.strokeStyle = 'rgb(255,255,255)';
ctx.moveTo(dragStart[0], dragStart[1]);
ctx.lineTo(dragStart[0]+rotateBaseVector[0], dragStart[1]+rotateBaseVector[1]);
ctx.stroke();
}
let operationTextFlags = {
"Space": "Range Move",
"AltLeft": "Body Move",
"AltRight": "Body Move",
"ControlLeft": "Scale",
"ControlRight": "Scale",
"ShiftLeft": "Rotate",
"ShiftRight": "Rotate",
"KeyQ": "CutOff",
"KeyD": "Delete",
"KeyX": "X-Axis",
"KeyC": "Y-Axis",
"KeyR": "Repair",
}
// operationTextFlagsに含まれるものがkeyDownFlagsに含まれるばあい、そのキーの文字列を取得
let activeOperations = Object.keys(operationTextFlags).filter(key => keyDownFlags[key]);
if (activeOperations.length > 0) {
// 左上に表示
ctx.font = '20px serif';
ctx.fillStyle = 'rgb(255,255,255)';
ctx.fillText(operationTextFlags[activeOperations[0]], 10, 30);
}
}
function Redraw(saving) {
clearCanvas();
drawBackground();
drawBodyPose(saving);
drawUI();
}
function getNearestNode(p) {
let minDistSq = Infinity;
let personIndex = -1;
let nodeIndex = -1;
for (let i = 0; i < poseData.length; i++) {
const pose = poseData[i];
for (let j = 0; j < pose.length; j++) {
const q = pose[j];
if (q == null) continue;
const d = distSq(p, q);
if (d < minDistSq) {
minDistSq = d;
personIndex = i;
nodeIndex = j;
}
}
}
return [personIndex, nodeIndex, Math.sqrt(minDistSq)];
}
let dragRange = 64;
let dragRangeDelta = 16;
// ドラッグ中に座標を保持するための変数
let isDragging = false;
let dragStart = [0, 0];
let dragPersonIndex = -1;
let dragMarks = [];
let dragMode = "";
let rotateBaseVector = null;
let history = [];
let historyIndex = 0;
function clearHistory() {
history = [];
historyIndex = 0;
}
function addHistory() {
history = history.slice(0, historyIndex);
history.push(JSON.parse(JSON.stringify(poseData)));
historyIndex = history.length;
}
function undo() {
if (1 < historyIndex) {
historyIndex--;
poseData = deepCopy(history[historyIndex-1]);
Redraw();
}
}
function redo() {
if (historyIndex < history.length) {
historyIndex++;
poseData = deepCopy(history[historyIndex-1]);
Redraw();
}
}
function fetchLatestPoseData() {
return history[historyIndex-1];
}
function getCanvasPosition(event) {
const rect = canvas.getBoundingClientRect();
const x = event.clientX - rect.left;
const y = event.clientY - rect.top;
return [x, y];
}
function forEachMarkedNodes(fn) {
for (let i = 0; i < dragMarks.length; i++) {
for (let j = 0; j < dragMarks[i].length; j++) {
if (dragMarks[i][j]) {
fn(i, j, poseData[i][j]);
}
}
}
}
// Canvas要素上でマウスが押された場合に呼び出される関数
function handleMouseDown(event) {
const p = getCanvasPosition(event);
const [personIndex, nodeIndex, minDist] = getNearestNode(p);
if (keyDownFlags["KeyD"]) {removePerson(personIndex);return;}
if (keyDownFlags["KeyR"]) {repairPerson(personIndex);return;}
if (keyDownFlags["KeyH"]) {toggleHideNode(personIndex, nodeIndex);return;}
if (keyDownFlags["KeyQ"] && minDist < 16) {
console.log("pressed KeyQ");
cutOffPersonLimb(personIndex, nodeIndex);
return;
}
// ドラッグ処理の開始
dragStart = p;
dragMarks = poseData.map(pose => pose.map(node => false));
if (event.altKey || event.ctrlKey || event.shiftKey ||
keyDownFlags["KeyX"] || keyDownFlags["KeyC"]) {
// dragMarksを設定
dragMarks[personIndex] =
poseData[personIndex].map((node) => node != null);
isDragging = true;
if (event.altKey) {
dragMode = "move";
} else if (event.ctrlKey) {
dragMode = "scale";
} else if (event.shiftKey) {
dragMode = "rotate";
rotateBaseVector = [0, 0];
} else if (keyDownFlags["KeyX"]) {
dragMode = "rotateX";
} else if (keyDownFlags["KeyC"]) {
dragMode = "rotateY";
}
} else if (keyDownFlags["Space"]) {
dragMarks[personIndex] =
poseData[personIndex].map(
(node) => node != null && distSq(p, node) < dragRange ** 2);
isDragging = dragMarks[personIndex].some((mark) => mark);
dragMode = "move";
} else if (minDist < 16) {
dragMarks[personIndex][nodeIndex] = true;
isDragging = true;
dragMode = "move";
}
}
// Canvas要素上でマウスが動いた場合に呼び出される関数
function handleMouseMove(event) {
mouseCursor = getCanvasPosition(event);
if (isDragging) {
const p = getCanvasPosition(event);
const dragOffset = [p[0] - dragStart[0], p[1] - dragStart[1]];
const latestPoseData = fetchLatestPoseData();
if (dragMode == "scale") {
// 拡大縮小
let xScale = 1 + dragOffset[0] / canvas.width;
let yScale = 1 + dragOffset[0] / canvas.height;
forEachMarkedNodes((i, j, node) => {
const lp = latestPoseData[i][j];
node[0] = (lp[0] - dragStart[0]) * xScale + dragStart[0];
node[1] = (lp[1] - dragStart[1]) * yScale + dragStart[1];
});
} else if (dragMode == "rotate") {
rotateBaseVector = dragOffset;
if (!event.shiftKey) {
dragMode = "rotate2";
}
} else if (dragMode == "rotate2") {
// 回転
let angle = directedAngleTo(rotateBaseVector, dragOffset);
forEachMarkedNodes((i, j, node) => {
const lp = latestPoseData[i][j];
let x = lp[0] - dragStart[0];
let y = lp[1] - dragStart[1];
let sin = Math.sin(angle);
let cos = Math.cos(angle);
node[0] = x * cos - y * sin + dragStart[0];
node[1] = x * sin + y * cos + dragStart[1];
});
} else if (dragMode == "rotateX") {
const center = dragStart;
const angle = dragOffset[1] / -40;
forEachMarkedNodes((i, j, node) => {
const lp = latestPoseData[i][j];
const np = rotateAndProject(rotateX, lp, center, angle);
node[0] = np[0];
node[1] = np[1];
});
} else if (dragMode == "rotateY") {
const center = dragStart;
const angle = dragOffset[0] / 40;
forEachMarkedNodes((i, j, node) => {
const lp = latestPoseData[i][j];
const np = rotateAndProject(rotateY, lp, center, angle);
node[0] = np[0];
node[1] = np[1];
});
} else if (dragMode == "move") {
// 移動
forEachMarkedNodes((i, j, node) => {
const lp = latestPoseData[i][j];
node[0] = lp[0] + dragOffset[0];
node[1] = lp[1] + dragOffset[1];
});
}
}
Redraw();
}
function handleMouseUp(event) {
isDragging = false;
addHistory();
Redraw();
}
function handleMouseLeave(event) {
mouseCursor = [-1,-1];
handleMouseUp(event);
keyDownFlags = {};
}
function ModifyDragRange(delta) { dragRange = Math.max(dragRangeDelta, Math.min(512, dragRange + delta)); }
document.addEventListener('wheel', function(event) {
if (!isMouseOnCanvas()) {return;}
if (!event.altKey && !keyDownFlags['Space']) {return;}
event.preventDefault();
const deltaY = event.deltaY;
if (deltaY < 0) {ModifyDragRange(-dragRangeDelta);}
if (0 < deltaY) {ModifyDragRange(dragRangeDelta);}
lastWheeling = new Date().getTime();
Redraw();
window.setTimeout(function() { Redraw(); }, wheelDisplayTime+10);
}, {passive: false});
document.addEventListener("keydown", (event) => {
if (!isMouseOnCanvas()) {return;}
if (event.code == "BracketLeft") { ModifyDragRange(-dragRangeDelta); }
if (event.code == "BracketRight") { ModifyDragRange(dragRangeDelta); }
keyDownFlags[event.code] = true;
Redraw();
event.preventDefault();
});
document.addEventListener("keyup", (event) => {
if (!isMouseOnCanvas()) {return;}
keyDownFlags[event.code] = false;
if (event.ctrlKey && event.code == "KeyE") {
addPerson();
} else if (event.ctrlKey && event.code == "KeyZ") {
if (event.shiftKey) {
redo();
} else {
undo();
}
}
Redraw();
event.preventDefault();
});
function initializeEditor() {
console.log("initializeEditor");
canvas = document.getElementById('canvas');
ctx = canvas.getContext('2d');
canvas.addEventListener('mousedown', handleMouseDown);
canvas.addEventListener('mousemove', handleMouseMove);
canvas.addEventListener('mouseup', handleMouseUp);
canvas.addEventListener('mouseleave', handleMouseLeave);
poseData = [];
clearHistory();
}
function importPose(jsonData) {
if (jsonData != null) {
if (Array.isArray(jsonData)) {
jsonData = jsonData[0]; // 自分で仕込んだバグ回避
}
newPoseData = makePoseDataFromCandidateAndSubset(jsonData.candidate, jsonData.subset);
} else {
newPoseData = makePoseDataFromCandidateAndSubset(sampleCandidateSource, [sampleSubsetElementSource]);
}
poseData = poseData.concat(newPoseData);
addHistory();
Redraw();
}
// crc32
// CRC32を初期化
function initCrc32Table() {
const crcTable = new Uint32Array(256);
for (let i = 0; i < 256; i++) {
let c = i;
for (let j = 0; j < 8; j++) {
c = (c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1);
}
crcTable[i] = c;
}
return crcTable;
}
// データのCRC32を計算
function getCrc32(data, crc=0) {
const crcTable = initCrc32Table();
crc = (crc ^ 0xFFFFFFFF) >>> 0;
for (let i = 0; i < data.length; i++) {
crc = crcTable[(crc ^ data[i]) & 0xFF] ^ (crc >>> 8);
}
return (crc ^ 0xFFFFFFFF) >>> 0;
}
function stringToUint8Array(str) {
var arr = new Uint8Array(str.length);
for (var i = 0; i < str.length; i++) {
arr[i] = str.charCodeAt(i);
}
return arr;
}
function base64ToUint8Array(base64Str) {
return stringToUint8Array(atob(base64Str));
}
function visitPng(png, type) {
var dataLength;
var chunkType;
var nextChunkPos;
var Signature = String.fromCharCode(137, 80, 78, 71, 13, 10, 26, 10);
var rpos = 0;
// シグネチャの確認
if (String.fromCharCode.apply(null, png.subarray(rpos, rpos += 8)) !== Signature) {
throw new Error('invalid signature');
}
// チャンクの探索
while (rpos < png.length) {
dataLength = (
(png[rpos++] << 24) |
(png[rpos++] << 16) |
(png[rpos++] << 8) |
(png[rpos++] )
) >>> 0;
nextChunkPos = rpos + dataLength + 8;
chunkType = String.fromCharCode.apply(null, png.subarray(rpos, rpos += 4));
if (chunkType === type) {
return [rpos - 8, dataLength, nextChunkPos];
}
rpos = nextChunkPos;
}
}
function createChunk(type, data) {
var dataLength = data.length;
var chunk = new Uint8Array(4 + 4 + dataLength + 4);
var type = stringToUint8Array(type);
var pos = 0;
// length
chunk[pos++] = (dataLength >> 24) & 0xff;
chunk[pos++] = (dataLength >> 16) & 0xff;
chunk[pos++] = (dataLength >> 8) & 0xff;
chunk[pos++] = (dataLength ) & 0xff;
// type
chunk[pos++] = type[0];
chunk[pos++] = type[1];
chunk[pos++] = type[2];
chunk[pos++] = type[3];
// data
for (let i = 0; i < dataLength; ++i) {
chunk[pos++] = data[i];
}
//crc
initCrc32Table();
let crc = getCrc32(type);
crc = getCrc32(data, crc);
chunk[pos++] = (crc >> 24) & 0xff;
chunk[pos++] = (crc >> 16) & 0xff;
chunk[pos++] = (crc >> 8) & 0xff;
chunk[pos++] = (crc ) & 0xff;
return chunk;
}
function insertChunk(destBuffer, sourceBuffer, rpos, chunk) {
var pos = 0;
// IDAT チャンクの前までコピー
destBuffer.set(sourceBuffer.subarray(0, rpos), pos);
pos += rpos;
// hoGe チャンクをコピー
destBuffer.set(chunk, pos);
pos += chunk.length;
// IDAT チャンク以降をコピー
destBuffer.set(sourceBuffer.subarray(rpos), pos);
}
function mergeCanvasWithPose(keyword, content) {
const canvasUrl = canvas.toDataURL();
var insertion = stringToUint8Array(`${keyword}\0${content}`);
var chunk = createChunk("tEXt", insertion);
var sourceBuffer = base64ToUint8Array(canvasUrl.split(',')[1]);
var destBuffer = new Uint8Array(sourceBuffer.length + insertion.length + 12);
var [rpos, dataLength, nextChunkPos] = visitPng(sourceBuffer, "IHDR");
insertChunk(destBuffer, sourceBuffer, nextChunkPos, chunk);
var blob = new Blob([destBuffer], {type: "image/png"});
var url = URL.createObjectURL(blob);
return url;
}
function savePose() {
var [candidate, subset] = poseDataToCandidateAndSubset(poseData);
let jsonData = {candidate: candidate, subset: subset};
Redraw(true);
var url = mergeCanvasWithPose("openpose", JSON.stringify(jsonData));
const createEl = document.createElement('a');
createEl.href = url;
// This is the name of our downloaded file
createEl.download = "pose.png";
createEl.click();
createEl.remove();
Redraw();
return jsonData;
}
function importBackground(image) {
if (image == null) {
canvasBg = null;
Redraw();
return;
}
let m = new Image();
m.src = image;
m.onload = function() {
canvasBg = m;
Redraw();
}
} |