/*
* 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
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package com.jme3.bullet.joints;
import com.jme3.bullet.objects.PhysicsRigidBody;
import com.jme3.export.InputCapsule;
import com.jme3.export.JmeExporter;
import com.jme3.export.JmeImporter;
import com.jme3.export.OutputCapsule;
import com.jme3.math.Vector3f;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* <i>From bullet manual:</i><br>
* Point to point constraint, also known as ball socket joint limits the translation
* so that the local pivot points of 2 rigidbodies match in worldspace.
* A chain of rigidbodies can be connected using this constraint.
* @author normenhansen
*/
public class Point2PointJoint extends PhysicsJoint {
public Point2PointJoint() {
}
/**
* @param pivotA local translation of the joint connection point in node A
* @param pivotB local translation of the joint connection point in node B
*/
public Point2PointJoint(PhysicsRigidBody nodeA, PhysicsRigidBody nodeB, Vector3f pivotA, Vector3f pivotB) {
super(nodeA, nodeB, pivotA, pivotB);
createJoint();
}
public void setDamping(float value) {
setDamping(objectId, value);
}
private native void setDamping(long objectId, float value);
public void setImpulseClamp(float value) {
setImpulseClamp(objectId, value);
}
private native void setImpulseClamp(long objectId, float value);
public void setTau(float value) {
setTau(objectId, value);
}
private native void setTau(long objectId, float value);
public float getDamping() {
return getDamping(objectId);
}
private native float getDamping(long objectId);
public float getImpulseClamp() {
return getImpulseClamp(objectId);
}
private native float getImpulseClamp(long objectId);
public float getTau() {
return getTau(objectId);
}
private native float getTau(long objectId);
@Override
public void write(JmeExporter ex) throws IOException {
super.write(ex);
OutputCapsule cap = ex.getCapsule(this);
cap.write(getDamping(), "damping", 1.0f);
cap.write(getTau(), "tau", 0.3f);
cap.write(getImpulseClamp(), "impulseClamp", 0f);
}
@Override
public void read(JmeImporter im) throws IOException {
super.read(im);
createJoint();
InputCapsule cap = im.getCapsule(this);
setDamping(cap.readFloat("damping", 1.0f));
setDamping(cap.readFloat("tau", 0.3f));
setDamping(cap.readFloat("impulseClamp", 0f));
}
protected void createJoint() {
objectId = createJoint(nodeA.getObjectId(), nodeB.getObjectId(), pivotA, pivotB);
Logger.getLogger(this.getClass().getName()).log(Level.FINE, "Created Joint {0}", Long.toHexString(objectId));
}
private native long createJoint(long objectIdA, long objectIdB, Vector3f pivotA, Vector3f pivotB);
}