idx3d
Class idx3d_Lightmap

java.lang.Object
  idx3d.idx3d_Lightmap

public final class idx3d_Lightmap
extends java.lang.Object

Lightmap for faster rendering, assuming static light sources.

Version:

3.3 2006-02-22 Werner Randelshofer: Avoid unecessary object creation.
3.2 2003-12-18 Werner Randelshofer: Changed type of variable cos in method rebuildLightMap from int to float. This greatly reduces band effects of the specular map. Added support for different resolutions. Dependency note: This change also requires changes in class idx3d_Rasterizer.

Constructor Summary

idx3d_Lightmap(idx3d_Scene scene)

idx3d_Lightmap(idx3d_Scene scene, int xResolution, int yResolution)
Creates a new light map of the specified horizontal and vertical resolution.

Method Summary

int	getIndex(int nx, int ny) Returns an index in the diffuse or specular map for the specified coordinates.
void	rebuildLightmap()

Methods inherited from class java.lang.Object

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

Constructor Detail

idx3d_Lightmap

public idx3d_Lightmap(idx3d_Scene scene)

idx3d_Lightmap

public idx3d_Lightmap(idx3d_Scene scene,
                      int xResolution,
                      int yResolution)

Creates a new light map of the specified horizontal and vertical resolution. The resolution must be a power of two.

Method Detail

getIndex

public int getIndex(int nx,
                    int ny)

Returns an index in the diffuse or specular map for the specified coordinates. The coordinates are always given for a virtual map of size 2^24*2^24.

Parameters:

nx - An value between -2^23 and +2^23.

ny - A value between -2^23 and +2^23.

rebuildLightmap

public void rebuildLightmap()