javascript
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three.js
réplica de https://github.com/tazdij/three.js.git


			
				
					
						
						
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		<h1>[name]</h1>

		<p class="desc">Serves as a base class for the other shadow classes.</p>

		<h2>Constructor</h2>

		<h3>[name]( [param:Camera camera] )</h3>
		<p>
			[page:Camera camera] - the light's view of the world.<br /><br />

			Create a new [name]. This is not intended to be called directly - it is
			used as a base class by other light shadows.
		</p>

		<h2>Properties</h2>

		<h3>[property:Boolean autoUpdate]</h3>
		<p>
			Enables automatic updates of the light's shadow. Default is `true`. If you
			do not require dynamic lighting / shadows, you may set this to `false`.
		</p>

		<h3>[property:Camera camera]</h3>
		<p>
			The light's view of the world. This is used to generate a depth map of the
			scene; objects behind other objects from the light's perspective will be
			in shadow.
		</p>

		<h3>[property:Float bias]</h3>
		<p>
			Shadow map bias, how much to add or subtract from the normalized depth
			when deciding whether a surface is in shadow.<br />
			The default is `0`. Very tiny adjustments here (in the order of `0.0001`) may
			help reduce artifacts in shadows
		</p>

		<h3>[property:Integer blurSamples]</h3>
		<p>The amount of samples to use when blurring a VSM shadow map.</p>

		<h3>[property:Float intensity]</h3>
		<p>
			The intensity of the shadow. The default is `1`. Valid values are in the range `[0, 1]`.
		</p>

		<h3>[property:WebGLRenderTarget map]</h3>
		<p>
			The depth map generated using the internal camera; a location beyond a
			pixel's depth is in shadow. Computed internally during rendering.
		</p>

		<h3>[property:WebGLRenderTarget mapPass]</h3>
		<p>
			The distribution map generated using the internal camera; an occlusion is
			calculated based on the distribution of depths. Computed internally during
			rendering.
		</p>

		<h3>[property:Vector2 mapSize]</h3>
		<p>
			A [Page:Vector2] defining the width and height of the shadow map.<br /><br />

			Higher values give better quality shadows at the cost of computation time.
			Values must be powers of 2, up to the
			[page:WebGLRenderer.capabilities].maxTextureSize for a given device,
			although the width and height don't have to be the same (so, for example,
			(512, 1024) is valid). The default is `( 512, 512 )`.
		</p>

		<h3>[property:Matrix4 matrix]</h3>
		<p>
			Model to shadow camera space, to compute location and depth in shadow map.
			Stored in a [page:Matrix4 Matrix4]. This is computed internally during
			rendering.
		</p>

		<h3>[property:Boolean needsUpdate]</h3>
		<p>
			When set to `true`, shadow maps will be updated in the next `render` call.
			Default is `false`. If you have set [page:.autoUpdate] to `false`, you
			will need to set this property to `true` and then make a render call to
			update the light's shadow.
		</p>

		<h3>[property:Float normalBias]</h3>
		<p>
			Defines how much the position used to query the shadow map is offset along
			the object normal. The default is `0`. Increasing this value can be used to
			reduce shadow acne especially in large scenes where light shines onto
			geometry at a shallow angle. The cost is that shadows may appear
			distorted.
		</p>

		<h3>[property:Float radius]</h3>
		<p>
			Setting this to values greater than 1 will blur the edges of the
			shadow.<br />

			High values will cause unwanted banding effects in the shadows - a greater
			[page:.mapSize mapSize] will allow for a higher value to be used here
			before these effects become visible.<br />
			If [page:WebGLRenderer.shadowMap.type] is set to [page:Renderer PCFSoftShadowMap], 
			radius has no effect and it is recommended to increase
			softness by decreasing [page:.mapSize mapSize] instead.<br /><br />

			Note that this has no effect if the [page:WebGLRenderer.shadowMap.type] is
			set to [page:Renderer BasicShadowMap].
		</p>

		<h2>Methods</h2>

		<h3>[method:Vector2 getFrameExtents]()</h3>
		<p>
			Used internally by the renderer to extend the shadow map to contain all
			viewports
		</p>

		<h3>[method:undefined updateMatrices]( [param:Light light] )</h3>
		<p>
			Update the matrices for the camera and shadow, used internally by the
			renderer.<br /><br />

			light -- the light for which the shadow is being rendered.
		</p>

		<h3>[method:Frustum getFrustum]()</h3>
		<p>
			Gets the shadow cameras frustum. Used internally by the renderer to cull
			objects.
		</p>

		<h3>[method:number getViewportCount]()</h3>
		<p>
			Used internally by the renderer to get the number of viewports that need
			to be rendered for this shadow.
		</p>

		<h3>[method:undefined dispose]()</h3>
		<p>
			Frees the GPU-related resources allocated by this instance. Call this
			method whenever this instance is no longer used in your app.
		</p>

		<h3>[method:this copy]( [param:LightShadow source] )</h3>
		<p>
			Copies value of all the properties from the [page:LightShadow source] to
			this Light.
		</p>

		<h3>[method:LightShadow clone]()</h3>
		<p>Creates a new LightShadow with the same properties as this one.</p>

		<h3>[method:Object toJSON]()</h3>
		<p>Serialize this LightShadow.</p>

		<h2>Source</h2>

		<p>
			[link:https://github.com/mrdoob/three.js/blob/master/src/lights/[name].js src/lights/[name].js]
		</p>
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