org.cell2d.celick.opengl

Class TextureImpl

java.lang.Object

org.cell2d.celick.opengl.TextureImpl

All Implemented Interfaces:

Texture

public class TextureImpl
extends java.lang.Object
implements Texture

A texture to be bound within JOGL. This object is responsible for keeping track of a given OpenGL texture and for calculating the texturing mapping coordinates of the full image. Since textures need to be powers of 2 the actual texture may be considerably bigged that the source image and hence the texture mapping coordinates need to be adjusted to matchup drawing the sprite against the texture.

Field Summary

Fields

Modifier and Type	Field and Description
protected static SGL	GL The renderer to use for all GL operations

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	TextureImpl() For subclasses to utilise
	TextureImpl(java.lang.String ref, int target, int textureID) Create a new texture

Method Summary

Modifier and Type	Method and Description
void	bind() Bind the GL context to a texture
static void	bindNone() Clear the binding of the texture
protected java.nio.IntBuffer	createIntBuffer(int size) Creates an integer buffer to hold specified ints - strictly a utility method
float	getHeight() Get the height of the physical texture
int	getImageHeight() Get the height of the original image
int	getImageWidth() Get the width of the original image
static Texture	getLastBind() Retrieve the last texture bound through the texture interface
byte[]	getTextureData() Get the pixel data from the card for this texture
int	getTextureHeight() Get the height of the actual texture
int	getTextureID() Get the OpenGL texture ID for this texture
java.lang.String	getTextureRef() Get the reference from which this texture was loaded
int	getTextureWidth() Get the width of the actual texture
float	getWidth() Get the width of the physical texture
boolean	hasAlpha() Check if the texture has alpha
void	release() Destroy the texture reference
void	reload() Reload this texture
void	setAlpha(boolean alpha) If this texture has alpha
void	setCacheName(java.lang.String cacheName) Set the name this texture is stored against in the cache
void	setHeight(int height) Set the height of the image
void	setTextureData(int srcPixelFormat, int componentCount, int minFilter, int magFilter, java.nio.ByteBuffer textureBuffer) Set the texture data that this texture can be reloaded from
void	setTextureFilter(int textureFilter) Apply a given texture filter to the texture
void	setTextureHeight(int texHeight) Set the height of this texture
void	setTextureID(int textureID) Set the OpenGL texture ID for this texture
void	setTextureWidth(int texWidth) Set the width of this texture
void	setWidth(int width) Set the width of the image
static void	unbind() Clear slick caching of the last bound texture so that an external texture binder can play with the context before returning control to slick.

Methods inherited from class java.lang.Object

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

Field Detail

GL

protected static SGL GL

The renderer to use for all GL operations

Constructor Detail

TextureImpl

protected TextureImpl()

For subclasses to utilise

TextureImpl

public TextureImpl(java.lang.String ref,
                   int target,
                   int textureID)

Create a new texture

Parameters:

ref - The reference this texture was loaded from

target - The GL target

textureID - The GL texture ID

Method Detail

getLastBind

public static Texture getLastBind()

Retrieve the last texture bound through the texture interface

Returns:

The last texture bound

setCacheName

public void setCacheName(java.lang.String cacheName)

Set the name this texture is stored against in the cache

Parameters:

cacheName - The name the texture is stored against in the cache

hasAlpha

public boolean hasAlpha()

Description copied from interface: Texture

Check if the texture has alpha

Specified by:

hasAlpha in interface Texture

Returns:

True if the texture has alpha

getTextureRef

public java.lang.String getTextureRef()

Description copied from interface: Texture

Get the reference from which this texture was loaded

Specified by:

getTextureRef in interface Texture

Returns:

The reference from which this texture was loaded

setAlpha

public void setAlpha(boolean alpha)

If this texture has alpha

Parameters:

alpha - True, If this texture has alpha

bindNone

public static void bindNone()

Clear the binding of the texture

unbind

public static void unbind()

Clear slick caching of the last bound texture so that an external texture binder can play with the context before returning control to slick.

bind

public void bind()

Description copied from interface: Texture

Bind the GL context to a texture

Specified by:

bind in interface Texture

setHeight

public void setHeight(int height)

Set the height of the image

Parameters:

height - The height of the image

setWidth

public void setWidth(int width)

Set the width of the image

Parameters:

width - The width of the image

getImageHeight

public int getImageHeight()

Description copied from interface: Texture

Get the height of the original image

Specified by:

getImageHeight in interface Texture

Returns:

The height of the original image

getImageWidth

public int getImageWidth()

Description copied from interface: Texture

Get the width of the original image

Specified by:

getImageWidth in interface Texture

Returns:

The width of the original image

getHeight

public float getHeight()

Description copied from interface: Texture

Get the height of the physical texture

Specified by:

getHeight in interface Texture

Returns:

The height of physical texture

getWidth

public float getWidth()

Description copied from interface: Texture

Get the width of the physical texture

Specified by:

getWidth in interface Texture

Returns:

The width of physical texture

getTextureHeight

public int getTextureHeight()

Description copied from interface: Texture

Get the height of the actual texture

Specified by:

getTextureHeight in interface Texture

Returns:

The height of the actual texture

getTextureWidth

public int getTextureWidth()

Description copied from interface: Texture

Get the width of the actual texture

Specified by:

getTextureWidth in interface Texture

Returns:

The width of the actual texture

setTextureHeight

public void setTextureHeight(int texHeight)

Set the height of this texture

Parameters:

texHeight - The height of the texture

setTextureWidth

public void setTextureWidth(int texWidth)

Set the width of this texture

Parameters:

texWidth - The width of the texture

release

public void release()

Description copied from interface: Texture

Destroy the texture reference

Specified by:

release in interface Texture

getTextureID

public int getTextureID()

Description copied from interface: Texture

Get the OpenGL texture ID for this texture

Specified by:

getTextureID in interface Texture

Returns:

The OpenGL texture ID

setTextureID

public void setTextureID(int textureID)

Set the OpenGL texture ID for this texture

Parameters:

textureID - The OpenGL texture ID

createIntBuffer

protected java.nio.IntBuffer createIntBuffer(int size)

Creates an integer buffer to hold specified ints - strictly a utility method

Parameters:

size - how many int to contain

Returns:

created IntBuffer

getTextureData

public byte[] getTextureData()

Description copied from interface: Texture

Get the pixel data from the card for this texture

Specified by:

getTextureData in interface Texture

Returns:

The texture data from the card for this texture

setTextureFilter

public void setTextureFilter(int textureFilter)

Description copied from interface: Texture

Apply a given texture filter to the texture

Specified by:

setTextureFilter in interface Texture

Parameters:

textureFilter - The texture filter to apply (GL_LINEAR, GL_NEAREST, etc..)

setTextureData

public void setTextureData(int srcPixelFormat,
                           int componentCount,
                           int minFilter,
                           int magFilter,
                           java.nio.ByteBuffer textureBuffer)

Set the texture data that this texture can be reloaded from

Parameters:

srcPixelFormat - The pixel format

componentCount - The component count

minFilter - The OpenGL minification filter

magFilter - The OpenGL magnification filter

textureBuffer - The texture buffer containing the data for the texture

reload

public void reload()

Reload this texture