Source: Scene/ShadowMode.js

  1. /*global define*/
  2. define([
  3.         '../Core/freezeObject'
  4.     ], function(
  5.         freezeObject) {
  6.     'use strict';
  8.     /**
  9.      * Specifies whether the object casts or receives shadows from each light source when
  10.      * shadows are enabled.
  11.      *
  12.      * @exports ShadowMode
  13.      */
  14.     var ShadowMode = {
  15.         /**
  16.          * The object does not cast or receive shadows.
  17.          *
  18.          * @type {Number}
  19.          * @constant
  20.          */
  21.         DISABLED : 0,
  23.         /**
  24.          * The object casts and receives shadows.
  25.          *
  26.          * @type {Number}
  27.          * @constant
  28.          */
  29.         ENABLED : 1,
  31.         /**
  32.          * The object casts shadows only.
  33.          *
  34.          * @type {Number}
  35.          * @constant
  36.          */
  37.         CAST_ONLY : 2,
  39.         /**
  40.          * The object receives shadows only.
  41.          *
  42.          * @type {Number}
  43.          * @constant
  44.          */
  45.         RECEIVE_ONLY : 3,
  47.         /**
  48.          * @private
  49.          */
  50.         NUMBER_OF_SHADOW_MODES : 4
  51.     };
  53.     /**
  54.      * @private
  55.      */
  56.     ShadowMode.castShadows = function(shadowMode) {
  57.         return (shadowMode === ShadowMode.ENABLED) || (shadowMode === ShadowMode.CAST_ONLY);
  58.     };
  60.     /**
  61.      * @private
  62.      */
  63.     ShadowMode.receiveShadows = function(shadowMode) {
  64.         return (shadowMode === ShadowMode.ENABLED) || (shadowMode === ShadowMode.RECEIVE_ONLY);
  65.     };
  67.     /**
  68.      * @private
  69.      */
  70.     ShadowMode.fromCastReceive = function(castShadows, receiveShadows) {
  71.         if (castShadows && receiveShadows) {
  72.             return ShadowMode.ENABLED;
  73.         } else if (castShadows) {
  74.             return ShadowMode.CAST_ONLY;
  75.         } else if (receiveShadows) {
  76.             return ShadowMode.RECEIVE_ONLY;
  77.         } else {
  78.             return ShadowMode.DISABLED;
  79.         }
  80.     };
  82.     return freezeObject(ShadowMode);
  83. });