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improve slice/preview visuals with custom normals

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This commit is contained in:
Stewart Allen 2022-10-14 12:42:51 -04:00
commit ce856146e9
7 changed files with 143 additions and 41 deletions
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22
src/kiri/layers.js
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@ -55,6 +55,7 @@ class Layers {
lines: [],
polys: [], // colors are an attribute on polygons
faces: [],
norms: undefined, // vertex normals
cface: undefined, // face color indices
paths: [],
cpath: undefined, // path colors indices
@ -148,18 +149,25 @@ class Layers {
if (!polys.length) {
return;
}
const z = polys[0].getZ(), faces = this.current.faces;
const cur = this.current;
const z = polys[0].getZ(), faces = cur.faces;
const off_opt = { z, flat: true };
polys.forEach(poly => {
const faceidx = faces.length / 3;
if (newPath) {
const path = poly.toPath2D(offset * 0.95);
const { left, right, normals } = path;
for (let p of path.faces) {
faces.push(p.x, p.y, p.z);
}
if (opts.outline) {
this.addPolys(newPolygon().addPoints(path.left).setOpen());
this.addPolys(newPolygon().addPoints(path.right).setOpen());
this.addPolys(newPolygon().addPoints(left).setOpenValue(poly.open));
this.addPolys(newPolygon().addPoints(right).setOpenValue(poly.open));
}
if (cur.norms) {
cur.norms.appendAll(normals);
} else {
cur.norms = normals;
}
} else {
let exp = off_opt.outs = [];
@ -186,7 +194,6 @@ class Layers {
});
});
}
const cur = this.current;
const color = opts.color ?
(typeof(opts.color) === 'number' ? { line: opts.color, face: opts.color } : opts.color) :
cur.color;
@ -220,7 +227,7 @@ class Layers {
continue;
}
const z = opts.z || poly.getZ();
const faces = poly.toPath3D(offset, height, 0);
const { faces, normals } = poly.toPath3D(offset, height, 0);
const cur = this.current;
const one = cur.paths[0];
if (one) {
@ -244,8 +251,11 @@ class Layers {
cur.cpath.push(Object.assign({ start: indln, count: Infinity }, opts.color));
}
}
if (normals) {
one.norms.appendAll(normals);
}
} else {
cur.paths.push({ index: [], faces, z });
cur.paths.push({ index: [], faces, z, norms: normals });
if (opts.color) {
cur.cpath = [ Object.assign({ start: 0, count: Infinity }, opts.color) ];
}