@realsee/dnalogel
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147 lines (146 loc) • 4.34 kB
JavaScript
var B = Object.defineProperty;
var M = (d, l, t) => l in d ? B(d, l, { enumerable: !0, configurable: !0, writable: !0, value: t }) : d[l] = t;
var P = (d, l, t) => (M(d, typeof l != "symbol" ? l + "" : l, t), t);
import * as C from "three";
import { concavePolygonVertexIndex as I, convexPolygonVertexIndex as V } from "./polygonVertex.js";
class G extends C.BufferGeometry {
constructor(t) {
super();
P(this, "bottomPositions", []);
P(this, "topPosition", []);
P(this, "faceCount", 0);
P(this, "_type", "Concave");
t && this.setPosition(t);
}
/**
* 设置底面和顶面的位置，创建类似BoxGeometry的多面结构
*/
setPosition(t) {
var x, f, g;
const i = (x = t.bottomPositions) != null ? x : this.bottomPositions, a = (f = t.topPosition) != null ? f : this.topPosition;
if (this._type = (g = t.type) != null ? g : this._type, this.bottomPositions = i, this.topPosition = a, !i || i.length < 3 || !a || a.length !== 3) {
console.error("PrismAnimationGeometry: Invalid parameters", i, a, t);
return;
}
const n = [...i];
n[0][0] === n.at(-1)[0] && n[0][1] === n.at(-1)[1] && n[0][2] === n.at(-1)[2] && (n.length -= 1);
const p = [a[0] - i[0][0], a[1] - i[0][1], a[2] - i[0][2]], m = n.map((s) => [s[0] + p[0], s[1] + p[1], s[2] + p[2]]);
this.faceCount = 2 + n.length;
const h = [], e = [], r = [], c = [];
let u = 0;
this.addBottomFace(n, h, e, r, u, c, 0), u += this.getBottomFaceVertexCount(n), this.addTopFace(m, h, e, r, u, c, 1), u += this.getTopFaceVertexCount(m);
for (let s = 0; s < n.length; s++) {
const o = (s + 1) % n.length;
this.addSideFace(
n[s],
n[o],
m[s],
m[o],
h,
e,
r,
u,
c,
2 + s
), u += 4;
}
this.setAttribute("position", new C.Float32BufferAttribute(h, 3)), this.setAttribute("uv", new C.Float32BufferAttribute(e, 2)), this.setIndex(r), this.clearGroups(), c.forEach((s) => {
this.addGroup(s.start, s.count, s.materialIndex);
}), this.computeBoundingSphere(), console.log("PrismAnimationGeometry UV debug:", {
totalUVs: e.length / 2,
totalPositions: h.length / 3,
faceCount: this.faceCount,
uvSample: e.slice(0, 20)
});
}
addBottomFace(t, i, a, n, p, m, h) {
const e = Math.min(...t.map((o) => o[0])), r = Math.max(...t.map((o) => o[0])), c = Math.min(...t.map((o) => o[2])), u = Math.max(...t.map((o) => o[2])), x = r - e || 1, f = u - c || 1;
for (const o of t) {
i.push(o[0], o[1], o[2]);
const y = (o[0] - e) / x, F = (o[2] - c) / f;
a.push(y, F);
}
const g = n.length, s = this._type === "Concave" ? I(t) : V(t);
for (const o of s)
n.push(o + p);
m.push({
start: g,
count: n.length - g,
materialIndex: h
});
}
addTopFace(t, i, a, n, p, m, h) {
const e = Math.min(...t.map((o) => o[0])), r = Math.max(...t.map((o) => o[0])), c = Math.min(...t.map((o) => o[2])), u = Math.max(...t.map((o) => o[2])), x = r - e || 1, f = u - c || 1;
for (const o of t) {
i.push(o[0], o[1], o[2]);
const y = (o[0] - e) / x, F = (o[2] - c) / f;
a.push(y, F);
}
const g = n.length, s = this._type === "Concave" ? I(t) : V(t);
for (let o = s.length - 1; o >= 0; o--)
n.push(s[o] + p);
m.push({
start: g,
count: n.length - g,
materialIndex: h
});
}
addSideFace(t, i, a, n, p, m, h, e, r, c) {
p.push(
t[0],
t[1],
t[2],
// 0
i[0],
i[1],
i[2],
// 1
n[0],
n[1],
n[2],
// 2
a[0],
a[1],
a[2]
// 3
), m.push(
0,
0,
// bottom1 (左下)
1,
0,
// bottom2 (右下)
1,
1,
// top2 (右上)
0,
1
// top1 (左上)
);
const u = h.length;
h.push(
e + 0,
e + 1,
e + 2,
// 第一个三角形
e + 0,
e + 2,
e + 3
// 第二个三角形
), r.push({
start: u,
count: 6,
// 两个三角形，6个索引
materialIndex: c
});
}
getBottomFaceVertexCount(t) {
return t.length;
}
getTopFaceVertexCount(t) {
return t.length;
}
}
export {
G as PrismAnimationGeometry
};