name.martingeisse.stackd.client.system.StackdTexture.java Source code

Introduction

Here is the source code for name.martingeisse.stackd.client.system.StackdTexture.java

Source

/**
 * Copyright (c) 2010 Martin Geisse
 *
 * This file is distributed under the terms of the MIT license.
 */

package name.martingeisse.stackd.client.system;

import java.io.IOException;
import java.io.InputStream;
import org.lwjgl.opengl.GL11;
import org.newdawn.slick.opengl.InternalTextureLoader;
import org.newdawn.slick.opengl.Texture;

/**
 * Wraps an image and provides OpenGL texture handling functions.
 */
public final class StackdTexture {

    /**
     * the KEY_COLOR
     */
    private static final int[] KEY_COLOR = { 255, 0, 255 };

    /**
     * the slickTexture
     */
    private final Texture slickTexture;

    /**
     * Constructor.
     * @param anchorClass this class specifies the package to load from
     * @param filename the filename to load from
     * @param flipped whether to y-flip the texture
     */
    public StackdTexture(final Class<?> anchorClass, final String filename, boolean flipped) {
        String resourceName = anchorClass.getName() + '/' + filename;
        try (InputStream inputStream = anchorClass.getResourceAsStream(filename)) {
            if (inputStream == null) {
                throw new RuntimeException("file not found: " + filename);
            }
            // TODO slick generates mipmaps *before* it removes the key color pixels, so with GL_LINEAR they bleed into the neighbor pixels
            this.slickTexture = InternalTextureLoader.get().getTexture(inputStream, resourceName, flipped,
                    GL11.GL_NEAREST, KEY_COLOR);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * Calls glBindTexture() on this texture.
     */
    public void glBindTexture() {
        GL11.glBindTexture(GL11.GL_TEXTURE_2D, slickTexture.getTextureID());
    }

    /**
     * Getter method for the width.
     * @return the width
     */
    public int getWidth() {
        return slickTexture.getImageWidth();
    }

    /**
     * Getter method for the height.
     * @return the height
     */
    public int getHeight() {
        return slickTexture.getImageHeight();
    }

}