<!doctype html>
<html>
<head>
<style>
html, body
{
margin:0;
}
canvas
{
position:absolute;
top:0;
left:0;
display:block;
width:100%;
height:100%;
}
</style>
</head>
<body>
<canvas></canvas>
<script type="module">
import { Scene, THREE } from './scene.js';
import { Region } from "./region.js";
let surfaceTest = () =>
{
let voxels = [];
voxels[Region.I(2, 2, 2)] = true;
voxels[Region.I(2, 3, 2)] = true;
voxels[Region.I(3, 2, 2)] = true;
let surface = Region.Surface(voxels)
console.log(surface);
let surfaceGeometry = new THREE.BufferGeometry();
surfaceGeometry.setAttribute('position', new THREE.BufferAttribute(surface.vert, 3) );
surfaceGeometry.setIndex(surface.triPointVert);
surfaceGeometry.computeVertexNormals();
let surfaceObject = new THREE.Mesh(
surfaceGeometry,
new THREE.MeshBasicMaterial({color:0xaa9900, wireframe:true})
);
return {
DOM:"canvas",
Init(inScene)
{
inScene.add(surfaceObject);
inScene.add(new THREE.GridHelper(10, 10));
},
Update(inScene, inDelta){}
};
}
let smoothTest = () =>
{
let average = (inArray, inPointInd, ...inOthersInd) =>
{
let sum = [0, 0, 0];
for(let i=0; i<inOthersInd.length; i++)
{
let otherInd = inOthersInd[i]*3;
sum[0] += inArray[otherInd+0];
sum[1] += inArray[otherInd+1];
sum[2] += inArray[otherInd+2];
}
let pointX = inPointInd*3 + 0;
let pointY = inPointInd*3 + 1;
let pointZ = inPointInd*3 + 2;
let reducer = inOthersInd.length;
let limit = (inCenter, inPoint) =>
{
var limit;
limit = inCenter-0.49;
if(inPoint <= limit)
{
return limit;
}
limit = inCenter + 0.49;
if(inPoint >= limit)
{
return limit;
}
return inPoint;
}
inArray[pointX] = limit(Math.round(inArray[pointX]), sum[0]/reducer);
inArray[pointY] = limit(Math.round(inArray[pointY]), sum[1]/reducer);
inArray[pointZ] = limit(Math.round(inArray[pointZ]), sum[2]/reducer);
};
let smooth = (inArray, inTimes) =>
{
let count = inArray.length/3;
for(let t=0; t<inTimes; t++)
{
for(let i=0; i<count; i++)
{
if(i==0)
{
average(inArray, i, count-1, i+1);
}
else
{
if(i==count-1)
{
average(inArray, i, i-1, 0);
}
else
{
average(inArray, i, i-1, i+1);
}
}
}
}
}
let path = (inPoints, inSmoothing, inColor) =>
{
let clone = [...inPoints];
smooth(clone, inSmoothing);
const geometry = new THREE.BufferGeometry();
geometry.setAttribute('position', new THREE.Float32BufferAttribute( clone, 3 ));
const materialLine = new THREE.LineBasicMaterial( { color: inColor, linewidth: 3 } );
const materialPoint = new THREE.PointsMaterial( { color:inColor, size: 0.05 } );
const output = new THREE.Group();
output.add( new THREE.Line( geometry, materialLine ) );
output.add( new THREE.Points( geometry, materialPoint ) );
return output;
}
const points =
[
4, 0, 0,
3, 0, 0,
2, 0, 0,
1, 0, 0,
//
0, 0, 0,
0, 1, 0,
1, 1, 0,
2, 1, 0,
2, 2, 0,
3, 2, 0,
4, 2, 0,
4, 3, 0,
//
5, 3, 0,
5, 2, 0,
5, 1, 0,
5, 0, 0,
];
return {
DOM:"canvas",
Init(inScene)
{
inScene.add(path(points, 0, 0xFF0000));
inScene.add(path(points, 10, 0x00ff00));
},
Update(scene, delta)
{
}
}
};
Scene(surfaceTest());
</script>
</body>
</html>