Light

API

HemisphericLight

半球灯光，模拟环境光

const light = new BABYLON.HemisphericLight(
  name: string,
  direction: Vector3,
  scene?: Scene
);

light.diffuse = BABYLON.Color3.White(); // 漫反射颜色
light.intensity = 0.5; // 光线强度

// 修改光源方向，半球的光源的direction指的不是光源的入射方向，而是物体的漫反射方向
light.direction = new BABYLON.Vec3(0, 1, 0);

PointLight

点光源

const light = new BABYLON.PointLight(
  name: string,
  position: Vector3,
  scene?: Scene
);

SpotLight

聚光灯，类似于路灯

const light = new BABYLON.SpotLight(
  name: string,
  position: Vector3,
  direction: Vector3,
  angle: number,
  exponent: number,
  scene?: Scene
);

// 修改光源位置
light.position = new BABYLON.Vec3(0, 0, 0);

DirectionalLight

直射光源，类似于太阳光

const light = new BABYLON.DirectionalLight(
  name: string,
  direction: Vector3,
  scene?: Scene
);

// 修改光源方向，直射光源的direction指的是光源的入射方向
light.direction = new BABYLON.Vec3(0, 1, 0);

// 修改光源位置
light.position = new BABYLON.Vec3(0, 0, 0);

参考

• DeepDive lights
• Light#constructor