SethTrowbridge/voxel
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orientation groups started

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TreetopFlyer 2021-07-12 17:41:40 -04:00
parent b630e26cfd
commit bded36b307
2 changed files with 35 additions and 23 deletions
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20
index.html
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@ -43,7 +43,7 @@ let surfaceTest = () =>
if(absDeltaY > max){ max = absDeltaY; } if(absDeltaY > max){ max = absDeltaY; }
if(absDeltaZ > max){ max = absDeltaZ; } if(absDeltaZ > max){ max = absDeltaZ; }
let lerp = 0.49/max; let lerp = 0.45/max;
if(lerp <= 1) if(lerp <= 1)
{ {
@ -58,7 +58,7 @@ let surfaceTest = () =>
return [ax, ay, az]; return [ax, ay, az];
} }
} }
let average = (inArray, inPointInd, inOthersIndArray) => let average = (inArray, inPointInd, inOthersIndArray, inOriginals) =>
{ {
let sum = [0, 0, 0]; let sum = [0, 0, 0];
for(let i=0; i<inOthersIndArray.length; i++) for(let i=0; i<inOthersIndArray.length; i++)
@ -74,7 +74,7 @@ let surfaceTest = () =>
let pointZ = inPointInd*3 + 2; let pointZ = inPointInd*3 + 2;
let reducer = inOthersIndArray.length; let reducer = inOthersIndArray.length;
let limited = limit(inArray[pointX], inArray[pointY], inArray[pointZ], sum[0]/reducer, sum[1]/reducer, sum[2]/reducer); let limited = limit(inOriginals[pointX], inOriginals[pointY], inOriginals[pointZ], sum[0]/reducer, sum[1]/reducer, sum[2]/reducer);
inArray[pointX] = limited[0]; inArray[pointX] = limited[0];
inArray[pointY] = limited[1]; inArray[pointY] = limited[1];
@ -83,11 +83,12 @@ let surfaceTest = () =>
let smooth = (inVertsArray, inNeighborsArray, inTimes) => let smooth = (inVertsArray, inNeighborsArray, inTimes) =>
{ {
let count = inVertsArray.length/3; let count = inVertsArray.length/3;
let originals = [...inVertsArray];
for(let t=0; t<inTimes; t++) for(let t=0; t<inTimes; t++)
{ {
for(let i=0; i<count; i++) for(let i=0; i<count; i++)
{ {
average(inVertsArray, i, inNeighborsArray[i]); average(inVertsArray, i, inNeighborsArray[i][0], originals);
} }
} }
return inVertsArray; return inVertsArray;
@ -96,10 +97,12 @@ let surfaceTest = () =>
let voxels = []; let voxels = [];
voxels[Region.I(0, 0, 0)] = true; voxels[Region.I(0, 0, 0)] = true;
voxels[Region.I(1, 0, 0)] = true; voxels[Region.I(1, 0, 0)] = true;
/*
voxels[Region.I(2, 0, 0)] = true; voxels[Region.I(2, 0, 0)] = true;
voxels[Region.I(0, 1, 0)] = true; voxels[Region.I(0, 1, 0)] = true;
voxels[Region.I(1, 1, 0)] = true; voxels[Region.I(1, 1, 0)] = true;
voxels[Region.I(0, 2, 0)] = true; voxels[Region.I(0, 2, 0)] = true;
*/
/* /*
voxels[Region.I(0, 0, 1)] = true; voxels[Region.I(0, 0, 1)] = true;
@ -121,8 +124,11 @@ let surfaceTest = () =>
voxels[Region.I(2, 0, 3)] = true; voxels[Region.I(2, 0, 3)] = true;
voxels[Region.I(0, 1, 3)] = true; voxels[Region.I(0, 1, 3)] = true;
voxels[Region.I(1, 1, 3)] = true; voxels[Region.I(1, 1, 3)] = true;
voxels[Region.I(2, 1, 3)] = true;
voxels[Region.I(0, 2, 3)] = true; voxels[Region.I(0, 2, 3)] = true;
*/ voxels[Region.I(1, 2, 3)] = true;
voxels[Region.I(2, 2, 3)] = true;
*/
let surface = Region.Surface(voxels); let surface = Region.Surface(voxels);
@ -137,14 +143,14 @@ let surfaceTest = () =>
); );
let vertsSmooth = new Float32Array(smooth(surface.vertices.flat(), surface.vertPointNeighbors, 10)); let vertsSmooth = new Float32Array(smooth(surface.vertices.flat(), surface.vertPointNeighbors, 5));
let surfaceSmoothGeometry = new THREE.BufferGeometry(); let surfaceSmoothGeometry = new THREE.BufferGeometry();
surfaceSmoothGeometry.setAttribute('position', new THREE.BufferAttribute(vertsSmooth, 3) ); surfaceSmoothGeometry.setAttribute('position', new THREE.BufferAttribute(vertsSmooth, 3) );
surfaceSmoothGeometry.setIndex(surface.triPointVert); surfaceSmoothGeometry.setIndex(surface.triPointVert);
surfaceSmoothGeometry.computeVertexNormals(true); surfaceSmoothGeometry.computeVertexNormals(true);
let surfaceSmoothObject = new THREE.Mesh( let surfaceSmoothObject = new THREE.Mesh(
surfaceSmoothGeometry, surfaceSmoothGeometry,
new THREE.MeshBasicMaterial({color:0xffffff, wireframe:true, side:THREE.DoubleSide, flatShading:true}) new THREE.MeshPhongMaterial({color:0xffffff, side:THREE.DoubleSide, flatShading:true})
); );

38
region.js
View File

@ -36,7 +36,7 @@ export const Region =
let vert = Region.XYZ(inVoxIndex); let vert = Region.XYZ(inVoxIndex);
vertPointer = vertices.length; vertPointer = vertices.length;
voxPointVert[inVoxIndex] = vertPointer; voxPointVert[inVoxIndex] = vertPointer;
vertPointNeighbors.push([]); vertPointNeighbors.push([[], [], [], []]);
vertices.push(vert); vertices.push(vert);
return [vertPointer, false]; return [vertPointer, false];
@ -46,7 +46,7 @@ export const Region =
return [vertPointer, true]; return [vertPointer, true];
} }
} }
function Edge(vert1, vert1WasFull, vert2, vert2WasFull) function Edge(vert1, vert1WasFull, vert2, vert2WasFull, inOrientationGroup)
{ {
/* /*
Sets up neighbor relationships between vert1 and vert2. Sets up neighbor relationships between vert1 and vert2.
@ -58,21 +58,27 @@ export const Region =
let p1Neighbors = vertPointNeighbors[vert1]; let p1Neighbors = vertPointNeighbors[vert1];
let p2Neighbors = vertPointNeighbors[vert2]; let p2Neighbors = vertPointNeighbors[vert2];
// if the two verts were already filled // if the two verts were already filled
if((vert1WasFull && vert2WasFull)) if((vert1WasFull && vert2WasFull))
{ {
// it's possible that they are already connected // it's possible that they are already connected
if(p1Neighbors.indexOf(vert2) !== -1) if(p1Neighbors[0].indexOf(vert2) !== -1)
{ {
// quit if they are // quit if they are
return; return;
} }
} }
p1Neighbors.push(vert2); p1Neighbors[0].push(vert2);
p2Neighbors.push(vert1); p2Neighbors[0].push(vert1);
p1Neighbors[inOrientationGroup+1].push(vert2);
p2Neighbors[inOrientationGroup+1].push(vert1);
} }
function Face(a, b, c, d /* vox indices */) function Face(a, b, c, d /* vox indices */, inOrientationGroup)
{ {
let [p1, p1WasFull] = Vert(a); let [p1, p1WasFull] = Vert(a);
let [p2, p2WasFull] = Vert(b); let [p2, p2WasFull] = Vert(b);
@ -81,10 +87,10 @@ export const Region =
triPointVert.push(p1, p2, p3, p3, p4, p1); triPointVert.push(p1, p2, p3, p3, p4, p1);
Edge(p1, p1WasFull, p2, p2WasFull); Edge(p1, p1WasFull, p2, p2WasFull, inOrientationGroup);
Edge(p2, p2WasFull, p3, p3WasFull); Edge(p2, p2WasFull, p3, p3WasFull, inOrientationGroup);
Edge(p3, p3WasFull, p4, p4WasFull); Edge(p3, p3WasFull, p4, p4WasFull, inOrientationGroup);
Edge(p4, p4WasFull, p1, p1WasFull); Edge(p4, p4WasFull, p1, p1WasFull, inOrientationGroup);
} }
var i; var i;
@ -113,13 +119,13 @@ export const Region =
CD = Region.I(x, y-1, z ); CD = Region.I(x, y-1, z );
CB = Region.I(x, y, z-1); CB = Region.I(x, y, z-1);
if(!inVoxels[BU]){ Face(BU, BC, TC, TU); } if(!inVoxels[BU]){ Face(BU, BC, TC, TU, 0); }
if(!inVoxels[BR]){ Face(BC, BR, TR, TC); } if(!inVoxels[BR]){ Face(BC, BR, TR, TC, 1); }
if(!inVoxels[TA]){ Face(TA, TU, TC, TR); } if(!inVoxels[TA]){ Face(TA, TU, TC, TR, 2); }
if(!inVoxels[CL]){ Face(BA, BU, TU, TA); } if(!inVoxels[CL]){ Face(BA, BU, TU, TA, 1); }
if(!inVoxels[CD]){ Face(BR, BA, TA, TR); } if(!inVoxels[CD]){ Face(BR, BA, TA, TR, 0); }
if(!inVoxels[CB]){ Face(BA, BU, BC, BR); } if(!inVoxels[CB]){ Face(BA, BU, BC, BR, 2); }
} }
} }