81 lines
2.1 KiB
JavaScript
81 lines
2.1 KiB
JavaScript
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import BaseLightSource from "./base-light-source.mjs";
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/**
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* A specialized subclass of the BaseLightSource which is used to render global light source linked to the scene.
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*/
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export default class GlobalLightSource extends BaseLightSource {
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/** @inheritDoc */
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static sourceType = "GlobalLight";
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/** @override */
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static effectsCollection = "lightSources";
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/** @inheritDoc */
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static defaultData = {
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...super.defaultData,
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rotation: 0,
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angle: 360,
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attenuation: 0,
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priority: -Infinity,
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vision: false,
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walls: false,
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elevation: Infinity,
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darkness: {min: 0, max: 0}
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}
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/**
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* Name of this global light source.
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* @type {string}
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* @defaultValue GlobalLightSource.sourceType
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*/
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name = this.constructor.sourceType;
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/**
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* A custom polygon placeholder.
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* @type {PIXI.Polygon|number[]|null}
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*/
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customPolygon = null;
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/* -------------------------------------------- */
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/* Global Light Source Initialization */
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/* -------------------------------------------- */
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/** @override */
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_createShapes() {
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this.shape = this.customPolygon ?? canvas.dimensions.sceneRect.toPolygon();
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}
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/* -------------------------------------------- */
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/** @override */
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_initializeSoftEdges() {
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this._flags.renderSoftEdges = false;
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}
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/* -------------------------------------------- */
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/** @override */
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_updateGeometry() {
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const offset = this._flags.renderSoftEdges ? this.constructor.EDGE_OFFSET : 0;
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const pm = new PolygonMesher(this.shape, {offset});
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this._geometry = pm.triangulate(this._geometry);
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const bounds = this.shape instanceof PointSourcePolygon ? this.shape.bounds : this.shape.getBounds();
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if ( this._geometry.bounds ) this._geometry.bounds.copyFrom(bounds);
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else this._geometry.bounds = bounds;
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}
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/* -------------------------------------------- */
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/** @override */
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_updateCommonUniforms(shader) {
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super._updateCommonUniforms(shader);
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const {min, max} = this.data.darkness;
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const u = shader.uniforms;
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u.globalLight = true;
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u.globalLightThresholds[0] = min;
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u.globalLightThresholds[1] = max;
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}
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}
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