com.badlogic.gdx.graphics.glutils

Class IndexArray

java.lang.Object

com.badlogic.gdx.graphics.glutils.IndexArray

All Implemented Interfaces:

IndexData, Disposable

public class IndexArray
extends Object
implements IndexData

Constructor Summary

Constructors

Constructor and Description
IndexArray(int maxIndices) Creates a new IndexArray to be used with vertex arrays.

Method Summary

Methods

Modifier and Type	Method and Description
void	bind() Binds this IndexArray for rendering with glDrawElements.
void	dispose() Disposes this IndexArray and all its associated OpenGL resources.
ShortBuffer	getBuffer() Returns the underlying ShortBuffer.
int	getNumIndices()
int	getNumMaxIndices()
void	invalidate() Invalidates the IndexArray so a new OpenGL buffer handle is created.
void	setIndices(short[] indices, int offset, int count) Sets the indices of this IndexArray, discarding the old indices.
void	setIndices(ShortBuffer indices) Copies the specified indices to the indices of this IndexBufferObject, discarding the old indices.
void	unbind() Unbinds this IndexArray.

Methods inherited from class java.lang.Object

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

Constructor Detail

IndexArray

public IndexArray(int maxIndices)

Creates a new IndexArray to be used with vertex arrays.

Parameters:

maxIndices - the maximum number of indices this buffer can hold

Method Detail

getNumIndices

public int getNumIndices()

Specified by:

getNumIndices in interface IndexData

Returns:

the number of indices currently stored in this buffer

getNumMaxIndices

public int getNumMaxIndices()

Specified by:

getNumMaxIndices in interface IndexData

Returns:

the maximum number of indices this IndexArray can store.

setIndices

public void setIndices(short[] indices,
              int offset,
              int count)

Sets the indices of this IndexArray, discarding the old indices. The count must equal the number of indices to be copied to this IndexArray.

This can be called in between calls to bind() and unbind(). The index data will be updated instantly.

Specified by:

setIndices in interface IndexData

Parameters:

indices - the vertex data

offset - the offset to start copying the data from

count - the number of shorts to copy

setIndices

public void setIndices(ShortBuffer indices)

Description copied from interface: IndexData

Copies the specified indices to the indices of this IndexBufferObject, discarding the old indices. Copying start at the current Buffer.position() of the specified buffer and copied the Buffer.remaining() amount of indices. This can be called in between calls to IndexData.bind() and IndexData.unbind(). The index data will be updated instantly.

Specified by:

setIndices in interface IndexData

Parameters:

indices - the index data to copy

getBuffer

public ShortBuffer getBuffer()

Returns the underlying ShortBuffer. If you modify the buffer contents they wil be uploaded on the call to bind(). If you need immediate uploading use setIndices(short[], int, int).

Specified by:

getBuffer in interface IndexData

Returns:

the underlying short buffer.

bind

public void bind()

Binds this IndexArray for rendering with glDrawElements.

Specified by:

bind in interface IndexData

unbind

public void unbind()

Unbinds this IndexArray.

Specified by:

unbind in interface IndexData

invalidate

public void invalidate()

Invalidates the IndexArray so a new OpenGL buffer handle is created. Use this in case of a context loss.

Specified by:

invalidate in interface IndexData

dispose

public void dispose()

Disposes this IndexArray and all its associated OpenGL resources.

Specified by:

dispose in interface IndexData

Specified by:

dispose in interface Disposable