package com.jme3.scene.plugins.blender.constraints;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.jme3.scene.Spatial;
import com.jme3.scene.plugins.blender.BlenderContext;
import com.jme3.scene.plugins.blender.BlenderContext.LoadedDataType;
import com.jme3.scene.plugins.blender.animations.BoneContext;
import com.jme3.scene.plugins.blender.animations.Ipo;
import com.jme3.scene.plugins.blender.file.BlenderFileException;
import com.jme3.scene.plugins.blender.file.Structure;
import com.jme3.scene.plugins.blender.objects.ObjectHelper;
/**
* Constraint applied on the bone.
*
* @author Marcin Roguski (Kaelthas)
*/
/* package */class BoneConstraint extends Constraint {
private static final Logger LOGGER = Logger.getLogger(BoneConstraint.class.getName());
/**
* The bone constraint constructor.
*
* @param constraintStructure
* the constraint's structure
* @param ownerOMA
* the OMA of the bone that owns the constraint
* @param influenceIpo
* the influence interpolation curve
* @param blenderContext
* the blender context
* @throws BlenderFileException
* exception thrown when problems with blender file occur
*/
public BoneConstraint(Structure constraintStructure, Long ownerOMA, Ipo influenceIpo, BlenderContext blenderContext) throws BlenderFileException {
super(constraintStructure, ownerOMA, influenceIpo, blenderContext);
}
@Override
public boolean validate() {
if (targetOMA != null) {
Spatial nodeTarget = (Spatial) blenderContext.getLoadedFeature(targetOMA, LoadedDataType.FEATURE);
if (nodeTarget == null) {
LOGGER.log(Level.WARNING, "Cannot find target for constraint: {0}.", name);
return false;
}
// the second part of the if expression verifies if the found node
// (if any) is an armature node
if (blenderContext.getMarkerValue(ObjectHelper.ARMATURE_NODE_MARKER, nodeTarget) != null) {
if (subtargetName.trim().isEmpty()) {
LOGGER.log(Level.WARNING, "No bone target specified for constraint: {0}.", name);
return false;
}
// if the target is not an object node then it is an Armature,
// so make sure the bone is in the current skeleton
BoneContext boneContext = blenderContext.getBoneContext(ownerOMA);
if (targetOMA.longValue() != boneContext.getArmatureObjectOMA().longValue()) {
LOGGER.log(Level.WARNING, "Bone constraint {0} must target bone in the its own skeleton! Targeting bone in another skeleton is not supported!", name);
return false;
}
}
}
return constraintDefinition == null ? true : constraintDefinition.isTargetRequired();
}
@Override
public void apply(int frame) {
super.apply(frame);
blenderContext.getBoneContext(ownerOMA).getBone().updateModelTransforms();
}
@Override
public Long getTargetOMA() {
if(targetOMA != null && subtargetName != null && !subtargetName.trim().isEmpty()) {
Spatial nodeTarget = (Spatial) blenderContext.getLoadedFeature(targetOMA, LoadedDataType.FEATURE);
if(nodeTarget != null) {
if(blenderContext.getMarkerValue(ObjectHelper.ARMATURE_NODE_MARKER, nodeTarget) != null) {
BoneContext boneContext = blenderContext.getBoneByName(targetOMA, subtargetName);
return boneContext != null ? boneContext.getBoneOma() : 0L;
}
return targetOMA;
}
}
return 0L;
}
}