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update create lines

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This commit is contained in:
casperlamboo 2016-05-06 19:45:03 +02:00
parent 626867e554
commit 4237195b5e
1 changed files with 21 additions and 21 deletions
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42
src/sliceActions/createLines.js
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@ -1,18 +1,14 @@
import THREE from 'three.js';
function addLine(geometry, lineLookup, lines, a, b) {
let index = lineLookup[`${b}_${a}`];
const index = lines.length;
lineLookup[`${a}_${b}`] = index;
if (index === undefined) {
index = lines.length;
lineLookup[`${a}_${b}`] = index;
lines.push({
line: new THREE.Line3(geometry.vertices[a], geometry.vertices[b]),
connects: [],
normals: []
});
}
lines.push({
line: new THREE.Line3(geometry.vertices[a], geometry.vertices[b]),
connects: [],
normals: []
});
return index;
}
@ -28,20 +24,24 @@ export default function createLines(geometry, settings) {
if (face.normal.y !== 1 && face.normal.y !== -1) {
const normal = new THREE.Vector2(face.normal.z, face.normal.x).normalize();
// check for only adding unique lines
const lookupA = lineLookup[`${face.b}_${face.a}`];
const lookupB = lineLookup[`${face.c}_${face.b}`];
const lookupC = lineLookup[`${face.a}_${face.c}`];
// only add unique lines
// returns index of said line
const a = addLine(geometry, lineLookup, lines, face.a, face.b);
const b = addLine(geometry, lineLookup, lines, face.b, face.c);
const c = addLine(geometry, lineLookup, lines, face.c, face.a);
const indexA = lookupA !== undefined ? lookupA : addLine(geometry, lineLookup, lines, face.a, face.b);
const indexB = lookupB !== undefined ? lookupB : addLine(geometry, lineLookup, lines, face.b, face.c);
const indexC = lookupC !== undefined ? lookupC : addLine(geometry, lineLookup, lines, face.c, face.a);
// set connecting lines (based on face)
lines[a].connects.push(b, c);
lines[b].connects.push(c, a);
lines[c].connects.push(a, b);
lines[indexA].connects.push(indexB, indexC);
lines[indexB].connects.push(indexC, indexA);
lines[indexC].connects.push(indexA, indexB);
lines[a].normals.push(normal);
lines[b].normals.push(normal);
lines[c].normals.push(normal);
lines[indexA].normals.push(normal);
lines[indexB].normals.push(normal);
lines[indexC].normals.push(normal);
}
}