Threejs 增加阴影的方法

admin

$ f8 V: b, J+ @
: b$ ^0 O' Y: ~& U" H  \  {) D官方提供的实例如下
6 C  _9 R9 a3 d% m  R( a1 ]
1。 首先在Scene里面激活 渲染 ShadowMap
//Create a WebGLRenderer and turn on shadows in the renderervar renderer = new THREE.WebGLRenderer();renderer.shadowMap.enabled = true;renderer.shadowMap.type = THREE.PCFSoftShadowMap; // default THREE.PCFShadowMap
: n( N+ N4 j/ @5 Y9 |  I
' Q/ j" c$ v! u/ D2。 创建平行光，并可以投射Shadow//Create a DirectionalLight and turn on shadows for the lightvar light = new THREE.DirectionalLight( 0xffffff, 1, 100 );light.position.set( 0, 1, 0 );                         //default; light shining from toplight.castShadow = true;            // default falsescene.add( light );
! W: P3 _' Y! T9 K
//Set up shadow properties for the lightlight.shadow.mapSize.width = 512;  // defaultlight.shadow.mapSize.height = 512; // defaultlight.shadow.camera.near = 0.5;    // defaultlight.shadow.camera.far = 500;     // default
, r% L) p: Q  `/ `5 k+ X2 q- A5 u- W
1 ~+ V8 i. Z& u: v6 C* ~) O3 C) ~, G3. 创建接受shadow的物体 //Create a sphere that cast shadows (but does not receive them)var sphereGeometry = new THREE.SphereBufferGeometry( 5, 32, 32 );var sphereMaterial = new THREE.MeshStandardMaterial( { color: 0xff0000 } );var sphere = new THREE.Mesh( sphereGeometry, sphereMaterial );sphere.castShadow = true; //default is falsesphere.receiveShadow = false; //defaultscene.add( sphere );

* J  j$ q% x' R8 Y+ o& P4. 创建获取投影的平面 //Create a plane that receives shadows (but does not cast them)var planeGeometry = new THREE.PlaneBufferGeometry( 20, 20, 32, 32 );var planeMaterial = new THREE.MeshStandardMaterial( { color: 0x00ff00 } )var plane = new THREE.Mesh( planeGeometry, planeMaterial );plane.receiveShadow = true;scene.add( plane );//Create a helper for the shadow camera (optional)var helper = new THREE.CameraHelper( light.shadow.camera );scene.add( helper );




效果如下！

3 R& R! y4 ]5 d" J9 O