playcanvas/build/playcanvas/src/extras/gizmo/tri-data.js

Open-source WebGL/WebGPU 3D engine for the web

import { Vec3 } from "../../core/math/vec3.js";
import { Quat } from "../../core/math/quat.js";
import { Mat4 } from "../../core/math/mat4.js";
import { Tri } from "../../core/shape/tri.js";
import { Geometry } from "../../scene/geometry/geometry.js";
const tmpV1 = new Vec3();
const tmpV2 = new Vec3();
const tmpV3 = new Vec3();
class TriData {
	_priority = 0;
	_transform = new Mat4();
	tris = [];
	constructor(geometry, priority = 0) {
		this.fromGeometry(geometry);
		this._priority = priority;
	}
	get transform() {
		return this._transform;
	}
	get priority() {
		return this._priority;
	}
	setTransform(pos = new Vec3(), rot = new Quat(), scale = new Vec3()) {
		this.transform.setTRS(pos, rot, scale);
	}
	fromGeometry(geometry) {
		if (!geometry || !(geometry instanceof Geometry)) {
			throw new Error("No geometry provided.");
		}
		const positions = geometry.positions ?? [];
		const indices = geometry.indices ?? [];
		this.tris = [];
		for (let k = 0; k < indices.length; k += 3) {
			const i1 = indices[k];
			const i2 = indices[k + 1];
			const i3 = indices[k + 2];
			tmpV1.set(positions[i1 * 3], positions[i1 * 3 + 1], positions[i1 * 3 + 2]);
			tmpV2.set(positions[i2 * 3], positions[i2 * 3 + 1], positions[i2 * 3 + 2]);
			tmpV3.set(positions[i3 * 3], positions[i3 * 3 + 1], positions[i3 * 3 + 2]);
			const tri = new Tri(tmpV1, tmpV2, tmpV3);
			this.tris.push(tri);
		}
	}
}
export {
	TriData
};