/*
* Copyright (c) 2009-2012 jMonkeyEngine
* All rights reserved.
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* met:
*
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* 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.
*
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* 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
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package com.jme3.scene.plugins.blender.modifiers;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
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.file.BlenderFileException;
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 blenderContext
* the blender context
*/
public ModifierHelper(String blenderVersion, BlenderContext blenderContext) {
super(blenderVersion, blenderContext);
}
/**
* 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 {
Set<String> alreadyReadModifiers = new HashSet<String>();
Collection<Modifier> result = new ArrayList<Modifier>();
Structure modifiersListBase = (Structure) objectStructure.getFieldValue("modifiers");
List<Structure> modifiers = modifiersListBase.evaluateListBase();
for (Structure modifierStructure : modifiers) {
String modifierType = modifierStructure.getType();
if (!Modifier.canBeAppliedMultipleTimes(modifierType) && alreadyReadModifiers.contains(modifierType)) {
LOGGER.log(Level.WARNING, "Modifier {0} can only be applied once to object: {1}", new Object[] { modifierType, objectStructure.getName() });
} else {
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) {
if (modifier.isModifying()) {
result.add(modifier);
alreadyReadModifiers.add(modifierType);
} else {
LOGGER.log(Level.WARNING, "The modifier {0} will cause no changes in the model. It will be ignored!", modifierStructure.getName());
}
} else {
LOGGER.log(Level.WARNING, "Unsupported modifier type: {0}", modifierStructure.getType());
}
}
}
return result;
}
}