org.deegree.rendering.r3d.opengl.tesselation
Class GeometryCallBack

java.lang.Object
  javax.media.opengl.glu.GLUtessellatorCallbackAdapter
      org.deegree.rendering.r3d.opengl.tesselation.GeometryCallBack

All Implemented Interfaces:

javax.media.opengl.glu.GLUtessellatorCallback

Direct Known Subclasses:

TexturedGeometryCallBack

public class GeometryCallBack
extends javax.media.opengl.glu.GLUtessellatorCallbackAdapter

The GeometryCallBack class will be called by the Tesselator if a SimpleAccessGeometry must be triangulated. This class will calculate the normals from the resulting vertices as well.

Version:

$Revision: 15512 $, $Date: 2009-01-06 12:12:13 +0100 (Di, 06 Jan 2009) $

Author:

Rutger Bezema, last edited by: $Author: rbezema $

Method Summary

void	addVertex(Vertex vertex)
void	begin(int openGLType)
protected float[]	calculateNormals() Calculate the normals according to the openGL type.
void	combineData(double[] coords, java.lang.Object[] coordinateData, float[] weights, java.lang.Object[] outData, java.lang.Object originalVertex)
Vertex	createNewVertex(int currentVertexLocation) Create a vertex appropriate for the tesselation of the given type of geometry.
RenderableGeometry	createRenderableGeometry(boolean useDirectBuffers) Calculate the normals for the tesselated geometry and return a renderable geometry created from the given SimpleAccessGeometry
void	edgeFlagData(boolean arg0, java.lang.Object originalVertex)
void	end()
void	errorData(int arg0, java.lang.Object originalVertex)
SimpleAccessGeometry	getGeometry()
int	getOpenGLType()
protected float[]	getTesselatedCoordinates()
java.util.List<Vertex>	getTesselatedVertices()
void	vertexData(java.lang.Object newVertex, java.lang.Object originalVertex)

Methods inherited from class javax.media.opengl.glu.GLUtessellatorCallbackAdapter

beginData, combine, edgeFlag, endData, error, vertex

Methods inherited from class java.lang.Object

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

Method Detail

begin

public void begin(int openGLType)

Specified by:

begin in interface javax.media.opengl.glu.GLUtessellatorCallback

Overrides:

begin in class javax.media.opengl.glu.GLUtessellatorCallbackAdapter

end

public void end()

Specified by:

end in interface javax.media.opengl.glu.GLUtessellatorCallback

Overrides:

end in class javax.media.opengl.glu.GLUtessellatorCallbackAdapter

errorData

public void errorData(int arg0,
                      java.lang.Object originalVertex)

Specified by:

errorData in interface javax.media.opengl.glu.GLUtessellatorCallback

Overrides:

errorData in class javax.media.opengl.glu.GLUtessellatorCallbackAdapter

combineData

public void combineData(double[] coords,
                        java.lang.Object[] coordinateData,
                        float[] weights,
                        java.lang.Object[] outData,
                        java.lang.Object originalVertex)

Specified by:

combineData in interface javax.media.opengl.glu.GLUtessellatorCallback

Overrides:

combineData in class javax.media.opengl.glu.GLUtessellatorCallbackAdapter

edgeFlagData

public void edgeFlagData(boolean arg0,
                         java.lang.Object originalVertex)

Specified by:

edgeFlagData in interface javax.media.opengl.glu.GLUtessellatorCallback

Overrides:

edgeFlagData in class javax.media.opengl.glu.GLUtessellatorCallbackAdapter

vertexData

public void vertexData(java.lang.Object newVertex,
                       java.lang.Object originalVertex)

Specified by:

vertexData in interface javax.media.opengl.glu.GLUtessellatorCallback

Overrides:

vertexData in class javax.media.opengl.glu.GLUtessellatorCallbackAdapter

getTesselatedVertices

public java.util.List<Vertex> getTesselatedVertices()

Returns:

the vertices of the tesselated geometry

addVertex

public void addVertex(Vertex vertex)

Parameters:

vertex -

getGeometry

public final SimpleAccessGeometry getGeometry()

Returns:

the geometry object currently tesselated

createNewVertex

public Vertex createNewVertex(int currentVertexLocation)

Create a vertex appropriate for the tesselation of the given type of geometry.

Parameters:

currentVertexLocation - of the coordinates (the Vertex count)

Returns:

the vertex used for the tesselation process.

createRenderableGeometry

public RenderableGeometry createRenderableGeometry(boolean useDirectBuffers)

Calculate the normals for the tesselated geometry and return a renderable geometry created from the given SimpleAccessGeometry

Parameters:

useDirectBuffers - to use direct buffers instead of heap buffers.

Returns:

the tesselated SimpleAccessGeometry as a RenderableGeometry

getTesselatedCoordinates

protected float[] getTesselatedCoordinates()

Returns:

the coordinates of the vertices created by the tesselation process.

calculateNormals

protected float[] calculateNormals()

Calculate the normals according to the openGL type.

Returns:

the normals appropriate for the openGL type.

getOpenGLType

public final int getOpenGLType()

Returns:

the openGLType