cione-comp-lib/es/node_modules/claygl/src/light/Directional.mjs

`$ yarn add cione-comp-lib` 或者 `$ npm i cione-comp-lib -S`

import Light from "../Light.mjs";
import Vector3 from "../math/Vector3.mjs";
var DirectionalLight = Light.extend({
  shadowBias: 1e-3,
  shadowSlopeScale: 2,
  shadowCascade: 1,
  cascadeSplitLogFactor: 0.2
}, {
  type: "DIRECTIONAL_LIGHT",
  uniformTemplates: {
    directionalLightDirection: {
      type: "3f",
      value: function(instance) {
        instance.__dir = instance.__dir || new Vector3();
        return instance.__dir.copy(instance.worldTransform.z).normalize().negate().array;
      }
    },
    directionalLightColor: {
      type: "3f",
      value: function(instance) {
        var color = instance.color;
        var intensity = instance.intensity;
        return [color[0] * intensity, color[1] * intensity, color[2] * intensity];
      }
    }
  },
  clone: function() {
    var light = Light.prototype.clone.call(this);
    light.shadowBias = this.shadowBias;
    light.shadowSlopeScale = this.shadowSlopeScale;
    return light;
  }
});
var DirectionalLight$1 = DirectionalLight;
export { DirectionalLight$1 as default };