com.badlogic.gdx.physics.box2d.joints.MouseJointDef.java Source code

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Here is the source code for com.badlogic.gdx.physics.box2d.joints.MouseJointDef.java

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/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 * 
 * 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.math.Vector2;
import com.badlogic.gdx.physics.box2d.JointDef;

/** Mouse joint definition. This requires a world target point, tuning parameters, and the time step. */
public class MouseJointDef extends JointDef {
    public MouseJointDef() {
        type = JointType.MouseJoint;
    }

    /** The initial world target point. This is assumed to coincide with the body anchor initially. */
    public final Vector2 target = new Vector2();

    /** The maximum constraint force that can be exerted to move the candidate body. Usually you will express as some multiple of
     * the weight (multiplier * mass * gravity). */
    public float maxForce = 0;

    /** The response speed. */
    public float frequencyHz = 5.0f;

    /** The damping ratio. 0 = no damping, 1 = critical damping. */
    public float dampingRatio = 0.7f;

    @Override
    public org.jbox2d.dynamics.joints.JointDef toJBox2d() {
        org.jbox2d.dynamics.joints.MouseJointDef jd = new org.jbox2d.dynamics.joints.MouseJointDef();
        jd.bodyA = bodyA.body;
        jd.bodyB = bodyB.body;
        jd.collideConnected = collideConnected;
        jd.dampingRatio = dampingRatio;
        jd.frequencyHz = frequencyHz;
        jd.maxForce = maxForce;
        jd.target.set(target.x, target.y);
        jd.type = org.jbox2d.dynamics.joints.JointType.MOUSE;
        return jd;
    }
}