SpotLightShadow - Verge3D 用户手册 - Soft8Soft
Description: 了解如何在使用 Verge3D 制作的交互式 3D 应用程序中使用 SpotLightShadow

LightShadow →

# SpotLightShadow

这在SpotLights内部用于计算阴影。

## 代码示例

`//Create a WebGLRenderer and turn on shadows in the renderer const renderer = new v3d.WebGLRenderer(); renderer.shadowMap.enabled = true; renderer.shadowMap.type = v3d.PCFSoftShadowMap; // default v3d.PCFShadowMap //Create a SpotLight and turn on shadows for the light const light = new v3d.SpotLight(0xffffff); light.castShadow = true; // default false app.scene.add(light); //Set up shadow properties for the light light.shadow.mapSize.width = 512; // default light.shadow.mapSize.height = 512; // default light.shadow.camera.near = 0.5; // default light.shadow.camera.far = 500 // default light.shadow.focus = 1; // default //Create a sphere that cast shadows (but does not receive them) const sphereGeometry = new v3d.SphereBufferGeometry(5, 32, 32); const sphereMaterial = new v3d.MeshStandardMaterial({ color: 0xff0000 }); const sphere = new v3d.Mesh(sphereGeometry, sphereMaterial); sphere.castShadow = true; //default is false sphere.receiveShadow = false; //default app.scene.add(sphere); //Create a plane that receives shadows (but does not cast them) const planeGeometry = new v3d.PlaneBufferGeometry(20, 20, 32, 32); const planeMaterial = new v3d.MeshStandardMaterial({ color: 0x00ff00 }) const plane = new v3d.Mesh(planeGeometry, planeMaterial); plane.receiveShadow = true; app.scene.add(plane); //Create a helper for the shadow camera (optional) const helper = new v3d.CameraHelper(light.shadow.camera); app.scene.add(helper);`

## 构造函数

构造函数创建一个 PerspectiveCamera : PerspectiveCamera 来管理阴影的世界视图

## 属性

有关常用属性，请参阅基础LightShadow类。

### # .camera : Camera

在光的世界里。这用于生成场景的深度图;从光的角度来看，其他物体背后的物体将处于阴影中。
默认值为PerspectiveCamera，近剪裁平面为0.5。 fov将通过更新方法跟踪拥有SpotLight的角度属性。同样，aspect属性将跟踪mapSize的方面。如果设置了灯光的距离属性，则远剪裁平面将跟踪该值，否则默认为500。

### # .focus : Number

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]. Default is 1.0.

## 方法

有关常用方法，请参阅基础LightShadow类。

## 源代码

关于如何获取此模块的源代码，请查看 本页。