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/*
* 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
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jme3.scene.plugins.blender.modifiers;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.jme3.scene.plugins.blender.AbstractBlenderHelper;
import com.jme3.scene.plugins.blender.BlenderContext;
import com.jme3.scene.plugins.blender.animations.Ipo;
import com.jme3.scene.plugins.blender.animations.IpoHelper;
import com.jme3.scene.plugins.blender.exceptions.BlenderFileException;
import com.jme3.scene.plugins.blender.file.Pointer;
import com.jme3.scene.plugins.blender.file.Structure;
/**
* A class that is used in modifiers calculations.
*
* @author Marcin Roguski
*/
public class ModifierHelper extends AbstractBlenderHelper {
private static final Logger LOGGER = Logger.getLogger(ModifierHelper.class.getName());
/**
* This constructor parses the given blender version and stores the result.
* Some functionalities may differ in different blender versions.
*
* @param blenderVersion
* the version read from the blend file
* @param fixUpAxis
* a variable that indicates if the Y asxis is the UP axis or not
*/
public ModifierHelper(String blenderVersion, boolean fixUpAxis) {
super(blenderVersion, fixUpAxis);
}
/**
* This method reads the given object's modifiers.
*
* @param objectStructure
* the object structure
* @param blenderContext
* the blender context
* @throws BlenderFileException
* this exception is thrown when the blender file is somehow
* corrupted
*/
public Collection<Modifier> readModifiers(Structure objectStructure, BlenderContext blenderContext) throws BlenderFileException {
Collection<Modifier> result = new ArrayList<Modifier>();
Structure modifiersListBase = (Structure) objectStructure.getFieldValue("modifiers");
List<Structure> modifiers = modifiersListBase.evaluateListBase(blenderContext);
for (Structure modifierStructure : modifiers) {
Modifier modifier = null;
if (Modifier.ARRAY_MODIFIER_DATA.equals(modifierStructure.getType())) {
modifier = new ArrayModifier(modifierStructure, blenderContext);
} else if (Modifier.MIRROR_MODIFIER_DATA.equals(modifierStructure.getType())) {
modifier = new MirrorModifier(modifierStructure, blenderContext);
} else if (Modifier.ARMATURE_MODIFIER_DATA.equals(modifierStructure.getType())) {
modifier = new ArmatureModifier(objectStructure, modifierStructure, blenderContext);
} else if (Modifier.PARTICLE_MODIFIER_DATA.equals(modifierStructure.getType())) {
modifier = new ParticlesModifier(modifierStructure, blenderContext);
}
if (modifier != null) {
result.add(modifier);
blenderContext.addModifier(objectStructure.getOldMemoryAddress(), modifier);
} else {
LOGGER.log(Level.WARNING, "Unsupported modifier type: {0}", modifierStructure.getType());
}
}
// at the end read object's animation modifier (object animation is
// either described by action or by ipo of the object)
Modifier modifier;
if (blenderVersion <= 249) {
modifier = this.readAnimationModifier249(objectStructure, blenderContext);
} else {
modifier = this.readAnimationModifier250(objectStructure, blenderContext);
}
if (modifier != null) {
result.add(modifier);
}
return result;
}
@Override
public boolean shouldBeLoaded(Structure structure, BlenderContext blenderContext) {
return true;
}
/**
* This method reads the object's animation modifier for blender version
* 2.49 and lower.
*
* @param objectStructure
* the object's structure
* @param blenderContext
* the blender context
* @return loaded modifier
* @throws BlenderFileException
* this exception is thrown when the blender file is somehow
* corrupted
*/
private Modifier readAnimationModifier249(Structure objectStructure, BlenderContext blenderContext) throws BlenderFileException {
Modifier result = null;
Pointer pAction = (Pointer) objectStructure.getFieldValue("action");
IpoHelper ipoHelper = blenderContext.getHelper(IpoHelper.class);
if (pAction.isNotNull()) {
Structure action = pAction.fetchData(blenderContext.getInputStream()).get(0);
List<Structure> actionChannels = ((Structure) action.getFieldValue("chanbase")).evaluateListBase(blenderContext);
if (actionChannels.size() == 1) {// object's animtion action has
// only one channel
Pointer pChannelIpo = (Pointer) actionChannels.get(0).getFieldValue("ipo");
Structure ipoStructure = pChannelIpo.fetchData(blenderContext.getInputStream()).get(0);
Ipo ipo = ipoHelper.fromIpoStructure(ipoStructure, blenderContext);
result = new ObjectAnimationModifier(ipo, action.getName(), objectStructure.getOldMemoryAddress(), blenderContext);
blenderContext.addModifier(objectStructure.getOldMemoryAddress(), result);
} else {
throw new IllegalStateException("Object's action cannot have more than one channel!");
}
} else {
Pointer pIpo = (Pointer) objectStructure.getFieldValue("ipo");
if (pIpo.isNotNull()) {
Structure ipoStructure = pIpo.fetchData(blenderContext.getInputStream()).get(0);
Ipo ipo = ipoHelper.fromIpoStructure(ipoStructure, blenderContext);
result = new ObjectAnimationModifier(ipo, objectStructure.getName(), objectStructure.getOldMemoryAddress(), blenderContext);
blenderContext.addModifier(objectStructure.getOldMemoryAddress(), result);
}
}
return result;
}
/**
* This method reads the object's animation modifier for blender version
* 2.50 and higher.
*
* @param objectStructure
* the object's structure
* @param blenderContext
* the blender context
* @return loaded modifier
* @throws BlenderFileException
* this exception is thrown when the blender file is somehow
* corrupted
*/
private Modifier readAnimationModifier250(Structure objectStructure, BlenderContext blenderContext) throws BlenderFileException {
Modifier result = null;
Pointer pAnimData = (Pointer) objectStructure.getFieldValue("adt");
if (pAnimData.isNotNull()) {
Structure animData = pAnimData.fetchData(blenderContext.getInputStream()).get(0);
Pointer pAction = (Pointer) animData.getFieldValue("action");
if (pAction.isNotNull()) {
Structure actionStructure = pAction.fetchData(blenderContext.getInputStream()).get(0);
IpoHelper ipoHelper = blenderContext.getHelper(IpoHelper.class);
Ipo ipo = ipoHelper.fromAction(actionStructure, blenderContext);
result = new ObjectAnimationModifier(ipo, actionStructure.getName(), objectStructure.getOldMemoryAddress(), blenderContext);
blenderContext.addModifier(objectStructure.getOldMemoryAddress(), result);
}
}
return result;
}
}
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