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Diffstat (limited to 'engine/src/bullet/com/jme3/bullet/joints/Point2PointJoint.java')
-rw-r--r--engine/src/bullet/com/jme3/bullet/joints/Point2PointJoint.java126
1 files changed, 126 insertions, 0 deletions
diff --git a/engine/src/bullet/com/jme3/bullet/joints/Point2PointJoint.java b/engine/src/bullet/com/jme3/bullet/joints/Point2PointJoint.java
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+++ b/engine/src/bullet/com/jme3/bullet/joints/Point2PointJoint.java
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+/*
+ * Copyright (c) 2009-2010 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.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.INFO, "Created Joint {0}", Long.toHexString(objectId));
+ }
+
+ private native long createJoint(long objectIdA, long objectIdB, Vector3f pivotA, Vector3f pivotB);
+}