com.ryanm.glvisualiser.imp
Class TextureUtils

java.lang.Object
  com.ryanm.glvisualiser.imp.TextureUtils

public class TextureUtils
extends java.lang.Object

Utility class for loading and manipulating textures

Author:

ryanm

Constructor Summary

TextureUtils()

Method Summary

static int	createRGBATexture(javax.media.opengl.GLAutoDrawable drawable, java.nio.ByteBuffer pixels, int width, int height, boolean mipmap) Create RGBA OpenGL texture.
static int	createRGBTexture(javax.media.opengl.GLAutoDrawable drawable, java.nio.ByteBuffer pixels, int width, int height, boolean mipmap) Create RGB OpenGL texture.
static void	destroyTexture(javax.media.opengl.GL gl, int handle) Destroy texture.
static java.net.URL	getResource(java.lang.String fileName) Get resource URL.
static int[]	grabPixels(java.awt.image.BufferedImage bufImage) Get image pixels.
static java.awt.image.BufferedImage	loadImage(java.lang.String filePath) Load image file.
static int	loadTexture(java.io.File imageFile, boolean hasAlpha, boolean mipmap, javax.media.opengl.GLAutoDrawable drawable) Simple texture load helper.
static java.nio.ByteBuffer	simpleImageConvert(int[] pixels, int width, int height, boolean hasAlpha) Convert image to OpenGL ready format for simple RGB/RGBA cases only!
static int	textureFromImage(java.awt.image.BufferedImage image, boolean hasAlpha, boolean mipmap, javax.media.opengl.GLAutoDrawable drawable) Simple texture creator

Methods inherited from class java.lang.Object

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

Constructor Detail

TextureUtils

public TextureUtils()

Method Detail

loadTexture

public static int loadTexture(java.io.File imageFile,
                              boolean hasAlpha,
                              boolean mipmap,
                              javax.media.opengl.GLAutoDrawable drawable)
                       throws java.io.IOException

Simple texture load helper.

Parameters:

imageFile - the image file

hasAlpha - Use alpha switch

mipmap - Build mipmap switch

drawable -

Returns:

Texture handle or -1 on error

Throws:

java.io.IOException

textureFromImage

public static int textureFromImage(java.awt.image.BufferedImage image,
                                   boolean hasAlpha,
                                   boolean mipmap,
                                   javax.media.opengl.GLAutoDrawable drawable)

Simple texture creator

Parameters:

image - the image

hasAlpha - Use alpha switch

mipmap - Build mipmap switch

drawable -

Returns:

Texture handle or -1 on error

destroyTexture

public static void destroyTexture(javax.media.opengl.GL gl,
                                  int handle)

Destroy texture.

Parameters:

gl -

handle - Texture handle

loadImage

public static java.awt.image.BufferedImage loadImage(java.lang.String filePath)

Load image file.

Parameters:

filePath - Path to file

Returns:

BufferedImage or null on error

getResource

public static java.net.URL getResource(java.lang.String fileName)

Get resource URL.

Parameters:

fileName - Name of file to load

Returns:

URL or null if not found

grabPixels

public static int[] grabPixels(java.awt.image.BufferedImage bufImage)

Get image pixels.

Parameters:

bufImage - Buffered image

Returns:

int array of pixels or null on error

simpleImageConvert

public static java.nio.ByteBuffer simpleImageConvert(int[] pixels,
                                                     int width,
                                                     int height,
                                                     boolean hasAlpha)

Convert image to OpenGL ready format for simple RGB/RGBA cases only!

Parameters:

pixels - int array of pixels

width - Width of image

height - Height of image

hasAlpha - Image have alpha

Returns:

a byte buffer of image data

createRGBATexture

public static int createRGBATexture(javax.media.opengl.GLAutoDrawable drawable,
                                    java.nio.ByteBuffer pixels,
                                    int width,
                                    int height,
                                    boolean mipmap)

Create RGBA OpenGL texture.

Parameters:

drawable -

pixels - ByteBuffer containing pixels

width - Width of texture

height - Height of texture

mipmap - Mipmap generation switch

Returns:

integer texture handle

createRGBTexture

public static int createRGBTexture(javax.media.opengl.GLAutoDrawable drawable,
                                   java.nio.ByteBuffer pixels,
                                   int width,
                                   int height,
                                   boolean mipmap)

Create RGB OpenGL texture.

Parameters:

drawable -

pixels - ByteBuffer containing pixels

width - Width of texture

height - Height of texture

mipmap - Mipmap generation switch

Returns:

integer texture handle