AI_Assistant/grid-apps-cmms
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improve faces to sketch

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This commit is contained in:
Stewart Allen 2024-08-15 19:33:06 -04:00
commit fc896d1ddc
1 changed files with 16 additions and 14 deletions
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30
src/mesh/model.js
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@ -15,7 +15,8 @@
gapp.register("mesh.model", [], (root, exports) => { gapp.register("mesh.model", [], (root, exports) => {
const { MeshPhongMaterial, MeshBasicMaterial, LineBasicMaterial } = THREE; const { MeshPhongMaterial, MeshBasicMaterial, LineBasicMaterial } = THREE;
const { BufferGeometry, BufferAttribute, DoubleSide, Mesh, Vector3, Triangle } = THREE; const { BufferGeometry, BufferAttribute, DoubleSide, Mesh } = THREE;
const { Box3, Vector3, Triangle } = THREE;
const { base, mesh, moto } = root; const { base, mesh, moto } = root;
const { space } = moto; const { space } = moto;
const { api } = mesh; const { api } = mesh;
@ -638,20 +639,16 @@ mesh.model = class MeshModel extends mesh.object {
} }
selectionToSketch() { selectionToSketch() {
let { polys, quaternion } = this.selectionToRotationPolys(); let { polys, center, quaternion } = this.selectionToRotationPolys();
if (!polys) { if (!polys) {
return; return;
} }
let bounds = newBounds();
let zs = 0;
for (let poly of polys) {
bounds.merge(poly.bounds);
zs += poly.getZ();
poly.setZ(0);
}
quaternion.invert(); quaternion.invert();
// center points, move to Z=0
let bounds = new Box3().setFromArray(polys.map(p => p.points.map(p => p.toArray())).flat().flat());
let pcenter = bounds.getCenter(new Vector3);
polys.forEach(p => p.move({ x: -pcenter.x, y: -pcenter.y, z: -pcenter.z }));
let normal = new Vector3(0,0,1).applyQuaternion(quaternion); let normal = new Vector3(0,0,1).applyQuaternion(quaternion);
let center = bounds.center(zs / polys.length).toVector3().applyQuaternion(quaternion);
let sketch = mesh.api.add.sketch({ let sketch = mesh.api.add.sketch({
normal, normal,
center center
@ -670,13 +667,18 @@ mesh.model = class MeshModel extends mesh.object {
let norms = tris.map(t => t.getNormal(new Vector3())); let norms = tris.map(t => t.getNormal(new Vector3()));
let norm = norms.reduce((a,b) => a.add(b)).normalize(); let norm = norms.reduce((a,b) => a.add(b)).normalize();
// compute quaternion and rotate triangles to face Z up // compute quaternion and rotate triangles to face Z up
const targetNorm = new THREE.Vector3(0, 0, 1); let targetNorm = new THREE.Vector3(0, 0, 1);
const rotato = new THREE.Quaternion().setFromUnitVectors(norm, targetNorm); let rotato = new THREE.Quaternion().setFromUnitVectors(norm, targetNorm);
points.forEach(p => p.applyQuaternion(rotato)); let center = new Vector3();
points.forEach(p => {
center.add(p);
p.applyQuaternion(rotato)
});
center.divideScalar(points.length).add(this.position());
// union and earcut the result // union and earcut the result
let polys = tris.map(t => newPolygon().fromVectors([ t.a, t.b, t.c ])); let polys = tris.map(t => newPolygon().fromVectors([ t.a, t.b, t.c ]));
let union = polygons.union(polys,0,true); let union = polygons.union(polys,0,true);
return { polys: union, quaternion: rotato }; return { polys: union, quaternion: rotato, center };
} else { } else {
return {}; return {};
} }