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work on getting index translated widget geometry

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This commit is contained in:
Stewart Allen 2022-11-01 19:55:30 -04:00
commit 2af361fc5a
8 changed files with 57 additions and 37 deletions
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45
src/kiri/widget.js
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@ -649,40 +649,37 @@ class Widget {
this.points = null;
}
getGeoVertices(unroll) {
getGeoVertices(unroll, index) {
let geo = this.mesh.geometry;
let pos = geo.getAttribute('position').array;
let pos = geo.getAttribute('position');
// if indexed, return points rotated about X and then offset
let track = this.track;
if (index && track.indexed) {
let delta = track.delta;
pos = pos.clone().applyMatrix4(
new THREE.Matrix4().makeRotationX(track.indexRad)
).applyMatrix4(
new THREE.Matrix4().makeTranslation(0, -delta.y, -delta.z + track.tzoff)
);
}
pos = pos.array;
if (geo.index && unroll !== false) {
let idx = geo.index.array;
let len = idx.length;
let p2 = new Float32Array(len * 3);
let pp2 = new Float32Array(len * 3);
let inc = 0;
for (let i=0; i<len; i++) {
let iv = idx[i];
let ip = iv * 3;
p2[inc++] = pos[ip++];
p2[inc++] = pos[ip++];
p2[inc++] = pos[ip];
pp2[inc++] = pos[ip++];
pp2[inc++] = pos[ip++];
pp2[inc++] = pos[ip];
}
return p2;
} else {
return pos;
pos = pp2;
} else if (index) {
pos = pos.slice();
}
}
iterPoints() {
let verts = this.getGeoVertices();
let index = 0;
let count = verts.length;
return new class ITER {
[Symbol.iterator]() { return {
next: () => {
let done = index >= count;
return done ? { done } :
{ value: newPoint(verts[index++], verts[index++], verts[index++]) };
}
} }
};
return pos;
}
getPoints() {