com.o2d.pkayjava.editor.utils.poly.TextureUtils.java Source code

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Here is the source code for com.o2d.pkayjava.editor.utils.poly.TextureUtils.java

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/*
 * ******************************************************************************
 *  * Copyright 2015 See AUTHORS file.
 *  *
 *  * 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.o2d.pkayjava.editor.utils.poly;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.files.FileHandle;
import com.badlogic.gdx.graphics.Pixmap;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.TextureRegion;

/**
 * @author Aurelien Ribon | http://www.aurelienribon.com/
 */
public class TextureUtils {
    private static final int[] potWidths = { 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 5096 };

    // -------------------------------------------------------------------------

    public static TextureRegion getPOTTexture(String path) {
        if (path == null)
            return null;

        FileHandle file = Gdx.files.absolute(path);
        if (!file.exists())
            return null;

        Pixmap pixmap = new Pixmap(file);
        int origW = pixmap.getWidth();
        int origH = pixmap.getHeight();
        int w = getNearestPOT(origW);
        int h = getNearestPOT(origH);
        int len = Math.max(w, h);

        Pixmap potPixmap = new Pixmap(len, len, pixmap.getFormat());
        potPixmap.drawPixmap(pixmap, 0, 0, 0, 0, origW, origH);
        pixmap.dispose();

        Texture texture = new Texture(potPixmap);
        texture.setFilter(Texture.TextureFilter.Linear, Texture.TextureFilter.Linear);

        return new TextureRegion(texture, 0, 0, origW, origH);
    }

    public static Pixmap getPOTPixmap(String path) {
        if (path == null)
            return null;

        FileHandle file = Gdx.files.absolute(path);
        if (!file.exists())
            return null;

        Pixmap pixmap = new Pixmap(file);
        int origW = pixmap.getWidth();
        int origH = pixmap.getHeight();
        int w = getNearestPOT(origW);
        int h = getNearestPOT(origH);
        int len = Math.max(w, h);

        Pixmap potPixmap = new Pixmap(len, len, pixmap.getFormat());
        potPixmap.drawPixmap(pixmap, 0, 0, 0, 0, origW, origH);
        pixmap.dispose();

        return potPixmap;
    }

    // -------------------------------------------------------------------------

    private static int getNearestPOT(int d) {
        for (int i = 0; i < potWidths.length; i++)
            if (d <= potWidths[i])
                return potWidths[i];
        return -1;
    }

    public static Pixmap getPOTPixmap(Texture texture) {
        if (texture == null)
            return null;
        texture.getTextureData().prepare();
        Pixmap pixmap = texture.getTextureData().consumePixmap();
        int origW = pixmap.getWidth();
        int origH = pixmap.getHeight();
        int w = getNearestPOT(origW);
        int h = getNearestPOT(origH);
        int len = Math.max(w, h);

        Pixmap potPixmap = new Pixmap(len, len, pixmap.getFormat());
        potPixmap.drawPixmap(pixmap, 0, 0, 0, 0, origW, origH);
        pixmap.dispose();

        return potPixmap;
    }

    public static TextureRegion getPOTTexture(Texture texture) {
        if (texture == null)
            return null;

        texture.getTextureData().prepare();
        Pixmap pixmap = texture.getTextureData().consumePixmap();
        int origW = pixmap.getWidth();
        int origH = pixmap.getHeight();
        int w = getNearestPOT(origW);
        int h = getNearestPOT(origH);
        int len = Math.max(w, h);

        Pixmap potPixmap = new Pixmap(len, len, pixmap.getFormat());
        potPixmap.drawPixmap(pixmap, 0, 0, 0, 0, origW, origH);
        pixmap.dispose();

        Texture otherTexture = new Texture(potPixmap);
        otherTexture.setFilter(Texture.TextureFilter.Linear, Texture.TextureFilter.Linear);

        return new TextureRegion(otherTexture, 0, 0, origW, origH);
    }
}