SethTrowbridge/voxel
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smoothing works

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This commit is contained in:
TreetopFlyer 2021-07-07 07:26:21 -04:00
parent dc2f826688
commit 9e5ea8098c
1 changed files with 48 additions and 20 deletions
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68
index.html
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@ -23,40 +23,61 @@
<script type="module"> <script type="module">
import { Scene, THREE } from './scene.js'; import { Scene, THREE } from './scene.js';
let average = (inPoints, inCenter) => let average = (inArray, inCenterInd, ...inPointsInd) =>
{ {
let output = [0, 0, 0]; let output = [0, 0, 0];
let centerInd = inCenterInd*3;
for(let i=0; i<inPoints.length; i+=3) for(let i=0; i<inPointsInd.length; i++)
{ {
output[0] += inPoints[i+0]; let pointInd = inPointsInd[i]*3;
output[1] += inPoints[i+1]; output[0] += inArray[pointInd+0];
output[2] += inPoints[i+2]; output[1] += inArray[pointInd+1];
output[2] += inArray[pointInd+2];
} }
let scalar = inPoints.length/3; let scalar = inPointsInd.length;
output[0] /= scalar; output[0] /= scalar;
output[1] /= scalar; output[1] /= scalar;
output[2] /= scalar; output[2] /= scalar;
let limit = (inShifted) => let limit = (inPoint, inCenter) =>
{ {
if(inShifted < -0.5) let limit = inCenter-0.5;
if(inPoint < limit)
{ {
return -0.5; return limit;
} }
if(inShifted > 0.5) limit = inCenter+0.5;
if(inPoint > limit)
{ {
return 0.5; return limit;
} }
return inShifted; return inPoint;
} }
output[0] = limit(output[0] - inCenter[0]); output[0] = limit(output[0], inArray[centerInd+0]);
output[1] = limit(output[1] - inCenter[1]); output[1] = limit(output[1], inArray[centerInd+1]);
output[2] = limit(output[2] - inCenter[2]); output[2] = limit(output[2], inArray[centerInd+2]);
return output; return output;
}; };
let smooth = (inArray) =>
{
let output = [inArray[0], inArray[1], inArray[2] ];
for(let i=1; i < (inArray.length/3)-1; i++)
{
output.push( ...average(inArray, i, i-1, i, i+1) );
}
output.push(inArray[inArray.length-3], inArray[inArray.length-2], inArray[inArray.length-1]);
return output;
}
let path = (inPoints, inColor) =>
{
const geometry = new THREE.BufferGeometry();
geometry.setAttribute('position', new THREE.Float32BufferAttribute( inPoints, 3 ));
const material = new THREE.LineBasicMaterial( { color: inColor, linewidth: 3 } );
return new THREE.Line( geometry, material );
}
const points = const points =
[ [
@ -69,17 +90,24 @@
4, 0, 0, 4, 0, 0,
4, 1, 0 4, 1, 0
]; ];
const geometry = new THREE.BufferGeometry();
geometry.setAttribute('position', new THREE.Float32BufferAttribute( points, 3 )); console.log( smooth(points) );
const material = new THREE.LineBasicMaterial( { color: 0x0000ff, linewidth: 3 } );
const line = new THREE.Line( geometry, material ); let path0 = path(points, 0xFF0000);
let path1 = path(smooth(points), 0x009900);
let path2 = path(smooth(smooth(points)), 0x00AA00);
let path3 = path(smooth(smooth(smooth(points))), 0x00FF00);
Scene( Scene(
{ {
DOM:"canvas", DOM:"canvas",
Init(inScene) Init(inScene)
{ {
inScene.add( line ); inScene.add( path0 );
inScene.add( path1 );
inScene.add( path2 );
inScene.add( path3 );
}, },
Update(scene, delta) Update(scene, delta)
{ {