/*
* Copyright (c) 2009-2012 jMonkeyEngine
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of 'jMonkeyEngine' nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jme3.scene.plugins.ogre;
import com.jme3.animation.Animation;
import com.jme3.animation.Bone;
import com.jme3.animation.BoneTrack;
import com.jme3.animation.Skeleton;
import com.jme3.asset.AssetInfo;
import com.jme3.asset.AssetLoader;
import com.jme3.asset.AssetManager;
import com.jme3.math.Quaternion;
import com.jme3.math.Vector3f;
import com.jme3.util.xml.SAXUtil;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.Stack;
import java.util.logging.Logger;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
public class SkeletonLoader extends DefaultHandler implements AssetLoader {
private static final Logger logger = Logger.getLogger(SceneLoader.class.getName());
private AssetManager assetManager;
private Stack<String> elementStack = new Stack<String>();
private HashMap<Integer, Bone> indexToBone = new HashMap<Integer, Bone>();
private HashMap<String, Bone> nameToBone = new HashMap<String, Bone>();
private BoneTrack track;
private ArrayList<BoneTrack> tracks = new ArrayList<BoneTrack>();
private Animation animation;
private ArrayList<Animation> animations;
private Bone bone;
private Skeleton skeleton;
private ArrayList<Float> times = new ArrayList<Float>();
private ArrayList<Vector3f> translations = new ArrayList<Vector3f>();
private ArrayList<Quaternion> rotations = new ArrayList<Quaternion>();
private ArrayList<Vector3f> scales = new ArrayList<Vector3f>();
private float time = -1;
private Vector3f position;
private Quaternion rotation;
private Vector3f scale;
private float angle;
private Vector3f axis;
public void startElement(String uri, String localName, String qName, Attributes attribs) throws SAXException {
if (qName.equals("position") || qName.equals("translate")) {
position = SAXUtil.parseVector3(attribs);
} else if (qName.equals("rotation") || qName.equals("rotate")) {
angle = SAXUtil.parseFloat(attribs.getValue("angle"));
} else if (qName.equals("axis")) {
assert elementStack.peek().equals("rotation")
|| elementStack.peek().equals("rotate");
axis = SAXUtil.parseVector3(attribs);
} else if (qName.equals("scale")) {
scale = SAXUtil.parseVector3(attribs);
} else if (qName.equals("keyframe")) {
assert elementStack.peek().equals("keyframes");
time = SAXUtil.parseFloat(attribs.getValue("time"));
} else if (qName.equals("keyframes")) {
assert elementStack.peek().equals("track");
} else if (qName.equals("track")) {
assert elementStack.peek().equals("tracks");
String boneName = SAXUtil.parseString(attribs.getValue("bone"));
Bone bone = nameToBone.get(boneName);
int index = skeleton.getBoneIndex(bone);
track = new BoneTrack(index);
} else if (qName.equals("boneparent")) {
assert elementStack.peek().equals("bonehierarchy");
String boneName = attribs.getValue("bone");
String parentName = attribs.getValue("parent");
Bone bone = nameToBone.get(boneName);
Bone parent = nameToBone.get(parentName);
parent.addChild(bone);
} else if (qName.equals("bone")) {
assert elementStack.peek().equals("bones");
// insert bone into indexed map
bone = new Bone(attribs.getValue("name"));
int id = SAXUtil.parseInt(attribs.getValue("id"));
indexToBone.put(id, bone);
nameToBone.put(bone.getName(), bone);
} else if (qName.equals("tracks")) {
assert elementStack.peek().equals("animation");
tracks.clear();
} else if (qName.equals("animation")) {
assert elementStack.peek().equals("animations");
String name = SAXUtil.parseString(attribs.getValue("name"));
float length = SAXUtil.parseFloat(attribs.getValue("length"));
animation = new Animation(name, length);
} else if (qName.equals("bonehierarchy")) {
assert elementStack.peek().equals("skeleton");
} else if (qName.equals("animations")) {
assert elementStack.peek().equals("skeleton");
animations = new ArrayList<Animation>();
} else if (qName.equals("bones")) {
assert elementStack.peek().equals("skeleton");
} else if (qName.equals("skeleton")) {
assert elementStack.size() == 0;
}
elementStack.add(qName);
}
public void endElement(String uri, String name, String qName) {
if (qName.equals("translate") || qName.equals("position") || qName.equals("scale")) {
} else if (qName.equals("axis")) {
} else if (qName.equals("rotate") || qName.equals("rotation")) {
rotation = new Quaternion();
axis.normalizeLocal();
rotation.fromAngleNormalAxis(angle, axis);
angle = 0;
axis = null;
} else if (qName.equals("bone")) {
bone.setBindTransforms(position, rotation, scale);
bone = null;
position = null;
rotation = null;
scale = null;
} else if (qName.equals("bonehierarchy")) {
Bone[] bones = new Bone[indexToBone.size()];
// find bones without a parent and attach them to the skeleton
// also assign the bones to the bonelist
for (Map.Entry<Integer, Bone> entry : indexToBone.entrySet()) {
Bone bone = entry.getValue();
bones[entry.getKey()] = bone;
}
indexToBone.clear();
skeleton = new Skeleton(bones);
} else if (qName.equals("animation")) {
animations.add(animation);
animation = null;
} else if (qName.equals("track")) {
if (track != null) { // if track has keyframes
tracks.add(track);
track = null;
}
} else if (qName.equals("tracks")) {
BoneTrack[] trackList = tracks.toArray(new BoneTrack[tracks.size()]);
animation.setTracks(trackList);
tracks.clear();
} else if (qName.equals("keyframe")) {
assert time >= 0;
assert position != null;
assert rotation != null;
times.add(time);
translations.add(position);
rotations.add(rotation);
if (scale != null) {
scales.add(scale);
}else{
scales.add(new Vector3f(1,1,1));
}
time = -1;
position = null;
rotation = null;
scale = null;
} else if (qName.equals("keyframes")) {
if (times.size() > 0) {
float[] timesArray = new float[times.size()];
for (int i = 0; i < timesArray.length; i++) {
timesArray[i] = times.get(i);
}
Vector3f[] transArray = translations.toArray(new Vector3f[translations.size()]);
Quaternion[] rotArray = rotations.toArray(new Quaternion[rotations.size()]);
Vector3f[] scalesArray = scales.toArray(new Vector3f[scales.size()]);
track.setKeyframes(timesArray, transArray, rotArray, scalesArray);
//track.setKeyframes(timesArray, transArray, rotArray);
} else {
track = null;
}
times.clear();
translations.clear();
rotations.clear();
scales.clear();
} else if (qName.equals("skeleton")) {
nameToBone.clear();
}
assert elementStack.peek().equals(qName);
elementStack.pop();
}
/**
* Reset the SkeletonLoader in case an error occured while parsing XML.
* This allows future use of the loader even after an error.
*/
private void fullReset() {
elementStack.clear();
indexToBone.clear();
nameToBone.clear();
track = null;
tracks.clear();
animation = null;
if (animations != null) {
animations.clear();
}
bone = null;
skeleton = null;
times.clear();
rotations.clear();
translations.clear();
time = -1;
position = null;
rotation = null;
scale = null;
angle = 0;
axis = null;
}
public Object load(InputStream in) throws IOException {
try {
// Added by larynx 25.06.2011
// Android needs the namespace aware flag set to true
// Kirill 30.06.2011
// Now, hack is applied for both desktop and android to avoid
// checking with JmeSystem.
SAXParserFactory factory = SAXParserFactory.newInstance();
factory.setNamespaceAware(true);
XMLReader xr = factory.newSAXParser().getXMLReader();
xr.setContentHandler(this);
xr.setErrorHandler(this);
InputStreamReader r = new InputStreamReader(in);
xr.parse(new InputSource(r));
if (animations == null) {
animations = new ArrayList<Animation>();
}
AnimData data = new AnimData(skeleton, animations);
skeleton = null;
animations = null;
return data;
} catch (SAXException ex) {
IOException ioEx = new IOException("Error while parsing Ogre3D dotScene");
ioEx.initCause(ex);
fullReset();
throw ioEx;
} catch (ParserConfigurationException ex) {
IOException ioEx = new IOException("Error while parsing Ogre3D dotScene");
ioEx.initCause(ex);
fullReset();
throw ioEx;
}
}
public Object load(AssetInfo info) throws IOException {
assetManager = info.getManager();
InputStream in = null;
try {
in = info.openStream();
return load(in);
} finally {
if (in != null){
in.close();
}
}
}
}