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# PointShadowNode

Represents the shadow implementation for point light nodes.

## Constructor

### new PointShadowNode ( light : PointLight, shadow : PointLightShadow )

Constructs a new point shadow node.

light | The shadow casting point light.
shadow | An optional point light shadow. Default is `null`.

## Methods

### .getShadowFilterFn ( type : number ) : function

Overwrites the default implementation to return point light shadow specific filtering functions.

type | The shadow type.

Overrides: ShadowNode#getShadowFilterFn

Returns: The filtering function.

### .renderShadow ( frame : NodeFrame )

Overwrites the default implementation with point light specific rendering code.

frame | A reference to the current node frame.

Overrides: ShadowNode#renderShadow

### .setupRenderTarget ( shadow : LightShadow, builder : NodeBuilder ) : Object

Overwrites the default implementation to create a CubeRenderTarget with CubeDepthTexture.

shadow | The light shadow object.
builder | A reference to the current node builder.

Returns: An object containing the shadow map and depth texture.

### .setupShadowCoord ( builder : NodeBuilder, shadowPosition : Node.<vec3> ) : Node.<vec3>

Overwrites the default implementation so the unaltered shadow position is used.

builder | A reference to the current node builder.
shadowPosition | A node representing the shadow position.

Overrides: ShadowNode#setupShadowCoord

Returns: The shadow coordinates.

### .setupShadowFilter ( builder : NodeBuilder, inputs : Object ) : Node.<float>

Overwrites the default implementation to only use point light specific shadow filter functions.

builder | A reference to the current node builder.

inputs

A configuration object that defines the shadow filtering.

filterFn | This function defines the filtering type of the shadow map e.g. PCF.
depthTexture | A reference to the shadow map's depth texture.
shadowCoord | Shadow coordinates which are used to sample from the shadow map.
shadow | The light shadow.

Overrides: ShadowNode#setupShadowFilter

Returns: The result node of the shadow filtering.

## Source

src/nodes/lighting/PointShadowNode.js