backend/libs/three/materials/SpriteMaterial.js

import { Material } from './Material.js';
import { Color } from '../math/Color.js';

/**
 * parameters = {
 *  color: <hex>,
 *  map: new THREE.Texture( <Image> ),
 *  alphaMap: new THREE.Texture( <Image> ),
 *  rotation: <float>,
 *  sizeAttenuation: <bool>
 * }
 */

class SpriteMaterial extends Material {
	constructor(parameters) {
		super();

		this.type = 'SpriteMaterial';

		this.color = new Color(0xffffff);

		this.map = null;

		this.alphaMap = null;

		this.rotation = 0;

		this.sizeAttenuation = true;

		this.transparent = true;

		this.setValues(parameters);
	}

	copy(source) {
		super.copy(source);

		this.color.copy(source.color);

		this.map = source.map;

		this.alphaMap = source.alphaMap;

		this.rotation = source.rotation;

		this.sizeAttenuation = source.sizeAttenuation;

		return this;
	}
}

SpriteMaterial.prototype.isSpriteMaterial = true;

export { SpriteMaterial };