This material can receive shadows, but otherwise is completely transparent.
var planeGeometry = new THREE.PlaneGeometry( 2000, 2000 );
planeGeometry.rotateX( - Math.PI / 2 );
var planeMaterial = new THREE.ShadowMaterial();
planeMaterial.opacity = 0.2;
var plane = new THREE.Mesh( planeGeometry, planeMaterial );
plane.position.y = -200;
plane.receiveShadow = true;
scene.add( plane );
[page:Object parameters] - (optional) an object with one or more properties defining the material's appearance.
Any property of the material (including any property inherited from [page:Material] and [page:ShaderMaterial]) can be passed in here.
See the base [page:Material] and [page:ShaderMaterial] classes for common properties.
Used to check whether this or derived classes are shadow materials. Default is *true*.
You should not change this, as it used internally for optimisation.
Defines whether this material is transparent. Default is *true*.
See the base [page:Material] and [page:ShaderMaterial] classes for common methods.
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]