Package org.sunflow.core.shader

## Class UVShader

- java.lang.Object
- - org.sunflow.core.shader.UVShader

- All Implemented Interfaces:
    `RenderObject`, `Shader`

      public class UVShader
      extends java.lang.Object
      implements Shader

- - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `UVShader()` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `Color` | `getOpacity​(ShadingState state)` | Returns how much light is blocked by this shader.
    `Color` | `getRadiance​(ShadingState state)` | Gets the radiance for a specified rendering state.
    `boolean` | `isOpaque()` | Returns `true` if this shader is fully opaque.
    `void` | `scatterPhoton​(ShadingState state, Color power)` | Scatter a photon with the specied power.
    `boolean` | `update​(ParameterList pl, SunflowAPI api)` | Update this object given a list of parameters.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### UVShader

          public UVShader()

  - ### Method Detail

    - #### update

          public boolean update​(ParameterList pl,
                                SunflowAPI api)

      Description copied from interface: `RenderObject`
      Update this object given a list of parameters. This method is guarenteed to be called at least once on every object, but it should correctly handle empty parameter lists. This means that the object should be in a valid state from the time it is constructed. This method should also return true or false depending on whether the update was succesfull or not.
      Specified by:
        `update` in interface `RenderObject`
      Parameters:
        `pl` - list of parameters to read from
        `api` - reference to the current scene
      Returns:
        `true` if the update is succesfull, `false` otherwise

    - #### getRadiance

          public Color getRadiance​(ShadingState state)

      Description copied from interface: `Shader`
      Gets the radiance for a specified rendering state. When this method is called, you can assume that a hit has been registered in the state and that the hit surface information has been computed.
      Specified by:
        `getRadiance` in interface `Shader`
      Parameters:
        `state` - current render state
      Returns:
        color emitted or reflected by the shader

    - #### scatterPhoton

          public void scatterPhoton​(ShadingState state,
                                    Color power)

      Description copied from interface: `Shader`
      Scatter a photon with the specied power. Incoming photon direction is specified by the ray attached to the current render state. This method can safely do nothing if photon scattering is not supported or relevant for the shader type.
      Specified by:
        `scatterPhoton` in interface `Shader`
      Parameters:
        `state` - current state
        `power` - power of the incoming photon.

    - #### isOpaque

          public boolean isOpaque()

      Description copied from interface: `Shader`
      Returns `true` if this shader is fully opaque. This gives a quick way to find out if a shader needs further processing when hit by a shadow ray.
      Specified by:
        `isOpaque` in interface `Shader`

    - #### getOpacity

          public Color getOpacity​(ShadingState state)

      Description copied from interface: `Shader`
      Returns how much light is blocked by this shader.
      Specified by:
        `getOpacity` in interface `Shader`