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start refactoring to remove dependence on THREE.Geometry

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This commit is contained in:
Stewart Allen 2021-03-01 18:12:34 -05:00
commit 59878384c9
2 changed files with 69 additions and 28 deletions
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25
src/geo/render.js
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@ -30,9 +30,10 @@
*/
function wireframe(group, points, color) {
if (points.length % 3 != 0) throw "invalid line : "+points.length;
let lines = new THREE.Geometry(),
let lines = new THREE.BufferGeometry(),
hash = {},
added = 0;
added = 0,
vertices = [];
for (let i = 0; i < points.length; i += 3) {
let p1 = points[i],
p2 = points[i + 1],
@ -41,22 +42,28 @@
l2 = newOrderedLine(p2, p3),
l3 = newOrderedLine(p3, p1);
if (!hash[l1.key]) {
lines.vertices.push(new THREE.Vector3(p1.x, p1.y, p1.z));
lines.vertices.push(new THREE.Vector3(p2.x, p2.y, p2.z));
vertices.appendAll([
p1.x, p1.y, p1.z,
p2.x, p2.y, p2.z
]);
hash[l1.key] = ++added;
}
if (!hash[l2.key]) {
lines.vertices.push(new THREE.Vector3(p2.x, p2.y, p2.z));
lines.vertices.push(new THREE.Vector3(p3.x, p3.y, p3.z));
vertices.appendAll([
p2.x, p2.y, p2.z,
p3.x, p3.y, p3.z
]);
hash[l2.key] = ++added;
}
if (!hash[l3.key]) {
lines.vertices.push(new THREE.Vector3(p3.x, p3.y, p3.z));
lines.vertices.push(new THREE.Vector3(p1.x, p1.y, p1.z));
vertices.appendAll([
p3.x, p3.y, p3.z,
p1.x, p1.y, p1.z
]);
hash[l3.key] = ++added;
}
}
lines.verticesNeedUpdate = true;
lines.setAttribute('position', new THREE.BufferAttribute( vertices.toFloat32(), 3 ) );
let mesh = new THREE.LineSegments(lines, getMaterial(color));
group.add(mesh);
return mesh;