Android Open Source - droidengine2d Texture Packer Atlas

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License

The source code is released under:

Apache License

Java Source Code

/*   Copyright 2013-2014 Miguel Vicente Linares
 *//  w w w  .j a v  a  2 s .c  om
 *  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.miviclin.droidengine2d.graphics.texture;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;

import android.content.Context;

import com.miviclin.droidengine2d.resources.AssetsLoader;

/**
 * TextureAtlas that supports texture atlases generated by TexturePacker (lite version).
 * 
 * @author Miguel Vicente Linares
 * 
 */
public class TexturePackerAtlas implements TextureAtlas {

  private Texture sourceTexture;
  private HashMap<String, TextureRegion> regions;

  /**
   * Constructor.
   */
  public TexturePackerAtlas() {
    this.sourceTexture = null;
    this.regions = new HashMap<String, TextureRegion>();
  }

  @Override
  public void loadFromFile(String path, Context context) {
    XmlPullParserFactory factory;
    XmlPullParser xpp;
    int eventType, x, y, width, height, index;
    boolean rotated;
    TextureRegion region;
    String regionName, originalX, originalY, originalW, originalH;
    String texturePath = null;

    try {
      factory = XmlPullParserFactory.newInstance();
      factory.setNamespaceAware(true);
      xpp = factory.newPullParser();
      xpp.setInput(AssetsLoader.getAsset(context, path), null);
      eventType = xpp.getEventType();

      while (eventType != XmlPullParser.END_DOCUMENT) {
        if (eventType == XmlPullParser.START_TAG) {
          if (xpp.getName().equals("sprite")) {
            regionName = xpp.getAttributeValue(null, "n");

            x = Integer.parseInt(xpp.getAttributeValue(null, "x"));
            y = Integer.parseInt(xpp.getAttributeValue(null, "y"));
            width = Integer.parseInt(xpp.getAttributeValue(null, "w"));
            height = Integer.parseInt(xpp.getAttributeValue(null, "h"));

            originalX = xpp.getAttributeValue(null, "oX");
            originalY = xpp.getAttributeValue(null, "oY");
            originalW = xpp.getAttributeValue(null, "oW");
            originalH = xpp.getAttributeValue(null, "oH");

            rotated = xpp.getAttributeValue(null, "r") != null;
            if (rotated) {
              throw new IllegalArgumentException("TexturePacker's rotated textures are not supported");
            }
            if (texturePath == null) {
              throw new NullPointerException("Can not find the texture path. " +
                  "Check TextureAtlas imagePath in the XML file and also check that the provided " +
                  "path for tha XML file is correct.");
            }
            if ((originalX != null) || (originalY != null) || (originalW != null) || (originalH != null)) {
              // Trimmed
              throw new IllegalArgumentException("TexturePacker's trimmed textures are not supported");
            } else {
              // Not trimmed
              if (sourceTexture == null) {
                sourceTexture = new Texture(context, texturePath);
              }
              region = new TextureRegion(sourceTexture, x, y, width, height);
              regions.put(regionName, region);
            }
          } else if (xpp.getName().equals("TextureAtlas")) {
            index = path.lastIndexOf('/');
            if ((index != -1) && (index + 1 <= path.length())) {
              texturePath = path.substring(0, index + 1) + xpp.getAttributeValue(null, "imagePath");
            } else {
              texturePath = xpp.getAttributeValue(null, "imagePath");
            }
          }
        }
        eventType = xpp.next();
      }
    } catch (XmlPullParserException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

  @Override
  public Texture getSourceTexture() {
    return sourceTexture;
  }

  @Override
  public TextureRegion getTextureRegion(String name) {
    return regions.get(name);
  }

  @Override
  public void clearAtlas() {
    regions.clear();
  }

  @Override
  public Map<String, TextureRegion> getTextureRegions() {
    return regions;
  }

}

Java Source Code List

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