@animech-public/playcanvas/build/playcanvas.prf/src/extras/gizmo/tri-data.js

PlayCanvas WebGL game engine

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 {
	constructor(geometry, priority = 0) {
		this._priority = 0;
		this._transform = new Mat4();
		this.tris = [];
		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) {
		var _geometry$positions, _geometry$indices;
		if (!geometry || !(geometry instanceof Geometry)) {
			throw new Error('No geometry provided.');
		}
		const positions = (_geometry$positions = geometry.positions) != null ? _geometry$positions : [];
		const indices = (_geometry$indices = geometry.indices) != null ? _geometry$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 };