com.github.jtse.puzzle.ogl.Textures.java Source code

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Here is the source code for com.github.jtse.puzzle.ogl.Textures.java

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/**
 *    Copyright 2011-2012 Jim Tse
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.github.jtse.puzzle.ogl;

import static org.lwjgl.opengl.GL11.GL_TEXTURE_2D;
import static org.lwjgl.opengl.GL11.glBegin;
import static org.lwjgl.opengl.GL11.glEnd;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

import org.lwjgl.opengl.GL11;
import org.newdawn.slick.opengl.Texture;
import org.newdawn.slick.opengl.TextureLoader;

/**
 * @author jtse
 */
public class Textures {
    public static void renderImage(Texture texture, int x, int y, int z) {
        // Color.white.bind();
        // texture.bind(); // or GL11.glBind(texture.getTextureID());
        //GL11.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
        GL11.glBindTexture(GL_TEXTURE_2D, texture.getTextureID());

        // GL11.glTexEnvf(GL11.GL_TEXTURE_ENV, GL11.GL_TEXTURE_ENV_MODE,
        // GL11.GL_MODULATE );

        // when texture area is small, bilinear filter the closest mipmap

        // GL11.glTexParameterf( GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER,
        // GL11.GL_LINEAR_MIPMAP_NEAREST );
        // when texture area is large, bilinear filter the first mipmap
        // GL11.glTexParameterf( GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER,
        // GL11.GL_LINEAR );

        // GL11.glTexParameterf( GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_S,
        // GL11.GL_CLAMP );
        // GL11.glTexParameterf( GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_T,
        // GL11.GL_CLAMP );

        glBegin(GL11.GL_QUADS);

        GL11.glTexCoord2d(0.0d, 0.0d);
        GL11.glVertex3d(x, y, z);

        // It's 0.99 instead of 1.0 because 1.0 creates edge artifacts
        GL11.glTexCoord2d(0.99d, 0.0d);
        GL11.glVertex3d(x + texture.getTextureWidth(), y, z);

        GL11.glTexCoord2d(0.99d, 0.99d);
        GL11.glVertex3d(x + texture.getTextureWidth(), y + texture.getTextureHeight(), z);

        GL11.glTexCoord2d(0.0d, 0.99d);
        GL11.glVertex3d(x, y + texture.getTextureHeight(), z);

        glEnd();
    }

    public static void renderImage(Texture texture, int x, int y) {
        renderImage(texture, x, y, 0);
    }

    public static Texture createImage(InputStream in) throws IOException {
        return TextureLoader.getTexture("PNG", in);
    }

    public static Texture createImage(File imageFile) throws IOException {
        InputStream in = new FileInputStream(imageFile);
        try {
            return createImage(in);
        } finally {
            in.close();
        }
    }
}