Android Open Source - gameengine Friction Joint

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License

The source code is released under:
Apache License
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Java Source Code

/*******************************************************************************
 * Copyright 2011 See AUTHORS file./*from   w w  w  .j a v a 2  s .c o  m*/
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

package com.badlogic.gdx.physics.box2d.joints;

import com.badlogic.gdx.physics.box2d.Joint;
import com.badlogic.gdx.physics.box2d.World;

/**
 * Friction joint. This is used for top-down friction. It provides 2D
 * translational friction and angular friction.
 */
public class FrictionJoint extends Joint {
    /*
     * JNI #include <Box2D/Box2D.h>
     */

    public FrictionJoint(World world, long addr) {
        super(world, addr);
    }

    /** Set the maximum friction force in N. */
    public void setMaxForce(float force) {
        jniSetMaxForce(addr, force);
    }

    private native void jniSetMaxForce(long addr, float force); /*
                                                                 * b2FrictionJoint*
                                                                 * joint =
                                                                 * (b2FrictionJoint
                                                                 * *)addr;
                                                                 * joint-
                                                                 * >SetMaxForce(
                                                                 * force );
                                                                 */

    /** Get the maximum friction force in N. */
    public float getMaxForce() {
        return jniGetMaxForce(addr);
    }

    private native float jniGetMaxForce(long addr); /*
                                                     * b2FrictionJoint* joint =
                                                     * (b2FrictionJoint*)addr;
                                                     * return
                                                     * joint->GetMaxForce();
                                                     */

    /** Set the maximum friction torque in N*m. */
    public void setMaxTorque(float torque) {
        jniSetMaxTorque(addr, torque);
    }

    private native void jniSetMaxTorque(long addr, float torque); /*
                                                                   * b2FrictionJoint
                                                                   * * joint = (
                                                                   * b2FrictionJoint
                                                                   * *)addr;
                                                                   * joint
                                                                   * ->SetMaxTorque
                                                                   * ( torque );
                                                                   */

    /** Get the maximum friction torque in N*m. */
    public float getMaxTorque() {
        return jniGetMaxTorque(addr);
    }

    private native float jniGetMaxTorque(long addr); /*
                                                      * b2FrictionJoint* joint =
                                                      * (b2FrictionJoint*)addr;
                                                      * return
                                                      * joint->GetMaxTorque();
                                                      */
}
Java Source Code List
