@woosh/meep-engine/src/engine/graphics/render/forward_plus/LightRenderMetadata.js

Pure JavaScript game engine. Fully featured and production ready.

import { BvhClient } from "../../../../core/bvh2/bvh3/BvhClient.js";

export class LightRenderMetadata {


    /**
     *
     * @param {AbstractLight} light
     */
    constructor(light) {
        /**
         *
         * @type {AbstractLight}
         */
        this.light = light;

        /**
         *
         * @type {number}
         */
        this.address = 0;

        this.bvh_leaf = new BvhClient();
    }

    /**
     *
     * @param {LightRenderMetadata} other
     * @returns {number}
     */
    compare(other) {
        return this.light.compare(other.light);
    }

    update() {
        const leaf = this.bvh_leaf;

        this.light.getAABB(leaf.bounds);

        leaf.write_bounds();
    }

    /**
     *
     * @param {BVH} bvh
     */
    link(bvh) {
        this.bvh_leaf.link(bvh, this.light.id);

        this.update();

        this.light.onDimensionChanged(this.update, this);
    }

    unlink() {

        this.light.offDimensionChanged(this.update, this);

        // disconnect from bvh
        this.bvh_leaf.unlink();
    }
}