161 lines
3.8 KiB
HTML
161 lines
3.8 KiB
HTML
<!doctype html>
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<html>
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<head>
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<style>
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html, body
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{
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margin:0;
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}
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canvas
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{
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position:absolute;
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top:0;
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left:0;
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display:block;
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width:100%;
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height:100%;
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}
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</style>
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</head>
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<body>
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<canvas></canvas>
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<script type="module">
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import { Scene, THREE } from './scene.js';
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let average = (inArray, inPointInd, ...inOthersInd) =>
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{
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let pointX = inPointInd*3 + 0;
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let pointY = inPointInd*3 + 1;
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let pointZ = inPointInd*3 + 2;
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let centerX = Math.round(inArray[pointX]);
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let centerY = Math.round(inArray[pointY]);
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let centerZ = Math.round(inArray[pointZ]);
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for(let i=0; i<inOthersInd.length; i++)
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{
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let otherInd = inOthersInd[i]*3;
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inArray[pointX] += inArray[otherInd+0];
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inArray[pointY] += inArray[otherInd+1];
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inArray[pointZ] += inArray[otherInd+2];
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}
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let reducer = inOthersInd.length+1;
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let limit = (inCenter, inPoint) =>
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{
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var limit;
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limit = inCenter-0.49;
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if(inPoint <= limit)
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{
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return limit;
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}
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limit = inCenter + 0.49;
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if(inPoint >= limit)
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{
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return limit;
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}
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return inPoint;
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}
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inArray[pointX] = limit(centerX, inArray[pointX]/reducer);
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inArray[pointY] = limit(centerY, inArray[pointY]/reducer);
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inArray[pointZ] = limit(centerZ, inArray[pointZ]/reducer);
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};
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let smooth = (inArray, inTimes) =>
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{
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let count = inArray.length/3;
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for(let t=0; t<inTimes; t++)
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{
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for(let i=0; i<count; i++)
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{
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if(i==0)
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{
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average(inArray, i, count-1, i+1);
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}
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else
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{
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if(i==count-1)
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{
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average(inArray, i, i-1, 0);
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}
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else
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{
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average(inArray, i, i-1, i+1);
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}
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}
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}
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}
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}
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/*
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let testPoints =
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[
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0, 0, 0,
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0, 1, 0,
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1, 1, 0
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];
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console.log(testPoints);
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average(testPoints, 1, 0, 2);
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console.log(testPoints);
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*/
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let path = (inPoints, inSmoothing, inColor) =>
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{
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let clone = [...inPoints];
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smooth(clone, inSmoothing);
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const geometry = new THREE.BufferGeometry();
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geometry.setAttribute('position', new THREE.Float32BufferAttribute( clone, 3 ));
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const materialLine = new THREE.LineBasicMaterial( { color: inColor, linewidth: 3 } );
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const materialPoint = new THREE.PointsMaterial( { color:inColor, size: 0.05 } );
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const output = new THREE.Group();
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output.add( new THREE.Line( geometry, materialLine ) );
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output.add( new THREE.Points( geometry, materialPoint ) );
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return output;
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}
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const points =
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[
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4, 0, 0,
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3, 0, 0,
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2, 0, 0,
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1, 0, 0,
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//
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0, 0, 0,
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0, 1, 0,
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1, 1, 0,
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2, 1, 0,
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2, 2, 0,
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3, 2, 0,
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4, 2, 0,
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4, 3, 0,
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//
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5, 3, 0,
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5, 2, 0,
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5, 1, 0,
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5, 0, 0,
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];
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Scene(
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{
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DOM:"canvas",
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Init(inScene)
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{
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inScene.add(path(points, 0, 0xFF0000));
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inScene.add(path(points, 50, 0x00ff00));
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},
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Update(scene, delta)
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{
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}
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}
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);
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</script>
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</body>
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</html> |