org.deegree.rendering.r3d.opengl.rendering.dem
Class RenderMeshFragment

java.lang.Object
  org.deegree.rendering.r3d.opengl.rendering.dem.RenderMeshFragment

All Implemented Interfaces:

Comparable<RenderMeshFragment>

public class RenderMeshFragment
extends Object
implements Comparable<RenderMeshFragment>

Encapsulates a MeshFragment of a MultiresolutionMesh that can be rendered via JOGL.

The geometry data of a RenderMeshFragment has one of the following states:

• Not loaded
• Loaded to main memory (i.e. buffer objects are created and filled)
• Loaded to GPU (i.e. OpenGL VBOs created and loaded to the GPU)
• Loaded to main memory and GPU

Version:

$Revision$

Author:

Markus Schneider, last edited by: $Author$

See Also:

FragmentTexture, MultiresolutionMesh, MeshFragment

Constructor Summary

RenderMeshFragment(MeshFragment fragment)

Method Summary

boolean	canAllocateEnoughMemory()
int	compareTo(RenderMeshFragment o)
void	disable(javax.media.opengl.GL gl) Disables the fragment in the given OpenGL context and frees the associated VBOs and texture object.
void	enable(javax.media.opengl.GL gl) Enables the fragment in the given OpenGL context, so it can be rendered.
boolean	equals(Object other)
float[][]	getBBox()
MeshFragmentData	getData()
float	getGeometricError()
int	getId()
int	hashCode() Implementation as proposed by Joshua Block in Effective Java (Addison-Wesley 2001), which supplies an even distribution and is relatively fast.
boolean	isEnabled() Returns whether fragment is ready for rendering (prepared VBOs).
boolean	isLoaded() Returns whether the geometry data is available in main memory.
void	load() Loads the geometry data into main memory.
void	render(javax.media.opengl.GL gl) Render the fragment data.
void	render(javax.media.opengl.GL gl, List<FragmentTexture> textures, ShaderProgram shaderProgram) Renders this fragment to the given OpenGL context with given (optional) textures.
int	size()
void	unload() Removes the geometry data from main memory (and disables it).

Methods inherited from class java.lang.Object

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

Constructor Detail

RenderMeshFragment

public RenderMeshFragment(MeshFragment fragment)

Parameters:

fragment - a MultiresolutionMesh fragment to create a renderable fragment from.

Method Detail

getId

public int getId()

Returns:

the macro triangle fragment id.

getBBox

public float[][] getBBox()

Returns:

the bbox of the MultiresolutionMesh fragment.

getGeometricError

public float getGeometricError()

Returns:

the geometric error of the MultiresolutionMesh fragment.

getData

public MeshFragmentData getData()

Returns:

the actual data of the MultiresolutionMesh fragment.

isLoaded

public boolean isLoaded()

Returns whether the geometry data is available in main memory.

Returns:

true, if the geometry data is available in main memory, false otherwise

load

public void load()
          throws IOException

Loads the geometry data into main memory.

Throws:

IOException

unload

public void unload()

Removes the geometry data from main memory (and disables it).

isEnabled

public boolean isEnabled()

Returns whether fragment is ready for rendering (prepared VBOs).

Returns:

true, if the fragment is ready to be rendered

enable

public void enable(javax.media.opengl.GL gl)
            throws IOException

Enables the fragment in the given OpenGL context, so it can be rendered.

Parameters:

gl -

Throws:

IOException

disable

public void disable(javax.media.opengl.GL gl)

Disables the fragment in the given OpenGL context and frees the associated VBOs and texture object.

Parameters:

gl -

render

public void render(javax.media.opengl.GL gl)

Render the fragment data.

Parameters:

gl -

render

public void render(javax.media.opengl.GL gl,
                   List<FragmentTexture> textures,
                   ShaderProgram shaderProgram)

Renders this fragment to the given OpenGL context with given (optional) textures.

Parameters:

gl - context to render in.

textures - may be empty, or null

shaderProgram - the shader program containing composite texturing code.

Throws:

RuntimeException - if the geometry data is currently not bound to VBOs

compareTo

public int compareTo(RenderMeshFragment o)

Specified by:

compareTo in interface Comparable<RenderMeshFragment>

equals

public boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public int hashCode()

Implementation as proposed by Joshua Block in Effective Java (Addison-Wesley 2001), which supplies an even distribution and is relatively fast. It is created from field f as follows:

• boolean -- code = (f ? 0 : 1)
• byte, char, short, int -- code = (int)f
• long -- code = (int)(f ^ (f >>>32))
• float -- code = Float.floatToIntBits(f);
• double -- long l = Double.doubleToLongBits(f); code = (int)(l ^ (l >>> 32))
• all Objects, (where equals( ) calls equals( ) for this field) -- code = f.hashCode( )
• Array -- Apply above rules to each element

Combining the hash code(s) computed above: result = 37 * result + code;

Overrides:

hashCode in class Object

Returns:

(int) ( result >>> 32 ) ^ (int) result;

See Also:

Object.hashCode()

size

public int size()

Returns:

size in bytes of this fragment.

canAllocateEnoughMemory

public boolean canAllocateEnoughMemory()

Returns:

true if the used direct buffer pool can allocate enough direct memory for the given data.