add examples

js/poseTweak.js

@@ -0,0 +1,862 @@
+var canvas = null;
+var ctx = null;
+var offscreen = null;
+var initialPoseField = null;
+var canvasBg = null;
+var debugLines = [];
+
+const wheelDisplayTime = 500;
+
+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]];
+
+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 sampleOffset = [0, -70];
+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] + sampleOffset[0], p[1] + sampleOffset[1]]);
+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();
+}
+
+// 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 drawPicture() {
+  ctx.globalAlpha = 1.0;
+  // if (picture != null) {
+    //var [w, h] = [canvas.width, canvas.height];
+    //var [pw, ph] = [picture.width, picture.height];
+    //var [x, y] = [(w-pw)/2, (h-ph)/2];
+    // ctx.drawImage(picture, sampleOffset[0], sampleOffset[1]);
+    // ctx.drawImage(picture, 0, 0);
+  // }
+
+  ctx.globalAlpha = 1.0;
+  if (offscreen != null) {
+    ctx.drawImage(offscreen, 0, 0);
+  }
+}
+
+function drawBodyPose() {
+  drawBodyPoseTo(ctx, poseData);
+}
+
+function drawBodyPoseTo(ctx, poseData) {
+  let stickWidth = 4;
+  let imageSize = Math.min(canvas.width, canvas.height);
+  stickWidth *= imageSize / 512;
+
+  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;
+      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.fillStyle = 'gray';
+      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;
+      ctx.beginPath();
+      ctx.arc(x, y, stickWidth, 0, 2 * Math.PI);
+      ctx.fillStyle = `rgb(${colors[j].join(',')})`;
+      ctx.fill();
+      // ctx.fillStyle = 'rgb(255,255,255)'
+      // ctx.fillText(j, x-3, y+4);
+    }
+  }
+}
+
+let lastWheeling = 0;
+
+function drawUI() {
+  if (keyDownFlags['Space'] || keyDownFlags['BracketLeft'] || keyDownFlags['BracketRight'] || 
+      new Date().getTime() - lastWheeling < wheelDisplayTime) {
+    ctx.beginPath();
+    ctx.lineWidth=4;
+    ctx.arc(mouseCursor[0], mouseCursor[1], dragRange, 0, 2 * Math.PI);
+    ctx.strokeStyle = 'rgb(255,255,255)';
+    ctx.stroke();
+  }
+
+  if (isDragging && (dragMode == "rotate" || dragMode == "rotate2")) {
+    ctx.beginPath();
+    ctx.lineWidth=1;
+    ctx.strokeStyle = 'rgb(255,255,255)';
+    ctx.moveTo(dragStart[0], dragStart[1]);
+    ctx.lineTo(dragStart[0]+rotateBaseVector[0], dragStart[1]+rotateBaseVector[1]);
+    ctx.stroke();
+  }
+
+  ctx.globalAlpha = 0.1;
+
+  for (let i = 0 ; i < debugLines.length ; i++) {
+    const p = debugLines[i];
+    const l = 50;
+    ctx.beginPath();
+    ctx.lineWidth= 2;
+    ctx.strokeStyle = `rgb(${colors[i].join(',')})`;
+    ctx.moveTo(p[0][0], p[0][1]);
+    ctx.lineTo(p[0][0]+p[1][0] * l, p[0][1]+p[1][1] * l);
+    ctx.stroke();
+  }
+  ctx.globalAlpha = 1.0;
+
+  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);
+  }
+
+  // draw mouse cursor position at right bottom
+  ctx.font = '20px serif';
+  ctx.fillStyle = 'rgb(255,255,255)';
+  ctx.fillText(`(${mouseCursor[0]}, ${mouseCursor[1]})`, canvas.width-200, canvas.height-10);
+
+}
+
+function Redraw() {
+  clearCanvas();
+  drawBackground();
+  drawPicture();
+  drawBodyPose();
+  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 = Math.floor(event.clientX - rect.left);
+  const y = Math.floor(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["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];
+      });
+    }
+
+    // animatePicture(document.getElementById("canvas4"),[canvas.width, canvas.height], history[0][0], poseData[0], pictureImageData, initialPoseField);
+  }
+
+  Redraw();
+}
+
+function handleMouseUp(event) {
+  console.profile("animate");
+  animatePicture(
+    document.getElementById("canvas4"),
+    [canvas.width, canvas.height], history[0][0], poseData[0], pictureImageData, initialPoseField);
+    console.profileEnd("animate");
+    isDragging = false; 
+  addHistory();
+  Redraw();
+}
+
+function handleMouseLeave(event) {
+  mouseCursor = [-1,-1];
+  if (isDragging) {
+    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) {
+    newPoseData = makePoseDataFromCandidateAndSubset(jsonData.candidate, jsonData.subset);
+    if (jsonData.width != null && jsonData.height != null) {
+      resizeCanvas(jsonData.width, jsonData.height);
+    }
+  } 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};
+
+  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();
+
+  return jsonData;
+}
+
+function importPicture(image) {
+  var pic = new Image();
+  pic.onload = () => {
+    const size = [canvas.width, canvas.height];
+
+    const canvas3 = document.getElementById("canvas3");
+    pictureImageData = makeImageDataFromPicture(canvas3, size, pic);
+
+    const canvas4 = document.getElementById("canvas4");
+    offscreen = canvas4;
+
+    initialPoseField = buildWeightMap(size, poseData[0]);
+    animatePicture(canvas4, size, poseData[0], poseData[0], pictureImageData, initialPoseField);
+
+    Redraw();
+  };
+  pic.src = image;
+
+  initMicroscope();
+}
+
+function importBackground(image) {
+  if (image == null) {
+    canvasBg = null;
+    Redraw();
+    return;
+  }
+
+  let m = new Image();
+  m.src = image;
+  m.onload = function() {
+    canvasBg = m;
+    Redraw();
+  }
+}