de.myreality.parallax.libgdx.PreprocessedTexture.java Source code

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Here is the source code for de.myreality.parallax.libgdx.PreprocessedTexture.java

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/* Library which provides parallax scrolling support for Java 2D libraries such as LibGDX and Slick2D.
 * Copyright (C) 2013  Miguel Gonzalez
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package de.myreality.parallax.libgdx;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL10;
import com.badlogic.gdx.graphics.Pixmap;
import com.badlogic.gdx.graphics.Pixmap.Format;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;

import de.myreality.parallax.LayerTexture;
import de.myreality.parallax.util.Color;

/**
 * Pre-processed LibGDX implementation of {@see LayerTexture} to 
 * provide pre-processed textures for layers at runtime.
 *
 * @author Miguel Gonzalez <miguel-gonzalez@gmx.de>
 * @since 1.0
 * @version 1.0
 */
public class PreprocessedTexture implements LayerTexture {

    // ===========================================================
    // Constants
    // ===========================================================

    // ===========================================================
    // Fields
    // ===========================================================

    private GdxTexture texture;

    private GdxTextureProcessor processor;

    private int width, height;

    private SpriteBatch batch;

    private Texture rawTexture;

    // ===========================================================
    // Constructors
    // ===========================================================

    public PreprocessedTexture(int width, int height, SpriteBatch batch, GdxTextureProcessor processor) {
        this.processor = processor;
        this.width = width;
        this.height = height;
        this.batch = batch;
    }

    // ===========================================================
    // Getter & Setter
    // ===========================================================

    // ===========================================================
    // Methods for/from SuperClass/Interfaces
    // ===========================================================

    @Override
    public void draw(float x, float y, float width, float height, Color filter) {
        if (texture != null) {
            texture.draw(x, y, width, height, filter);
        }
    }

    @Override
    public void load() {
        Pixmap map = new Pixmap(width, height, Format.RGBA8888);
        Gdx.gl.glEnable(GL10.GL_BLEND);
        Gdx.gl.glBlendFunc(GL10.GL_SRC_ALPHA, GL10.GL_ONE_MINUS_SRC_ALPHA);
        processor.process(map);
        rawTexture = new Texture(map);
        map.dispose();
        Gdx.gl.glDisable(GL10.GL_BLEND);
        texture = new GdxTexture(rawTexture, batch);
    }

    @Override
    public void dispose() {
        texture.dispose();
        rawTexture.dispose();
        texture = null;
        rawTexture = null;
    }

    @Override
    public int getWidth() {
        if (texture != null) {
            return texture.getWidth();
        } else {
            return 0;
        }
    }

    @Override
    public int getHeight() {
        if (texture != null) {
            return texture.getHeight();
        } else {
            return 0;
        }
    }

    // ===========================================================
    // Methods
    // ===========================================================

    // ===========================================================
    // Inner and Anonymous Classes
    // ===========================================================

}