@openhps/core/dist/cjs/three/lights/SpotLightShadow.js

Open Hybrid Positioning System - Core component

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.SpotLightShadow = void 0;
var _LightShadow = require("./LightShadow.js");
var _MathUtils = require("../math/MathUtils.js");
var _PerspectiveCamera = require("../cameras/PerspectiveCamera.js");
/**
 * Represents the shadow configuration of directional lights.
 *
 * @augments LightShadow
 */
class SpotLightShadow extends _LightShadow.LightShadow {
  /**
   * Constructs a new spot light shadow.
   */
  constructor() {
    super(new _PerspectiveCamera.PerspectiveCamera(50, 1, 0.5, 500));

    /**
     * This flag can be used for type testing.
     *
     * @type {boolean}
     * @readonly
     * @default true
     */
    this.isSpotLightShadow = true;

    /**
     * Used to focus the shadow camera. The camera's field of view is set as a
     * percentage of the spotlight's field-of-view. Range is `[0, 1]`.
     *
     * @type {number}
     * @default 1
     */
    this.focus = 1;
  }
  updateMatrices(light) {
    const camera = this.camera;
    const fov = _MathUtils.RAD2DEG * 2 * light.angle * this.focus;
    const aspect = this.mapSize.width / this.mapSize.height;
    const far = light.distance || camera.far;
    if (fov !== camera.fov || aspect !== camera.aspect || far !== camera.far) {
      camera.fov = fov;
      camera.aspect = aspect;
      camera.far = far;
      camera.updateProjectionMatrix();
    }
    super.updateMatrices(light);
  }
  copy(source) {
    super.copy(source);
    this.focus = source.focus;
    return this;
  }
}
exports.SpotLightShadow = SpotLightShadow;