CircleShape.java

/*******************************************************************************
 * 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;

import com.badlogic.gdx.math.Vector2;

/**
 * A circle shape.
 * @author mzechner
 * 
 */
public class CircleShape extends Shape {
	public CircleShape () {
		addr = newCircleShape();
	}

	private native long newCircleShape ();

	protected CircleShape (long addr) {
		this.addr = addr;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override public Type getType () {
		return Type.Circle;
	}

	/**
	 * Returns the position of the shape
	 */
	private final float[] tmp = new float[2];
	private final Vector2 position = new Vector2();

	public Vector2 getPosition () {
		jniGetPosition(addr, tmp);
		position.x = tmp[0];
		position.y = tmp[1];
		return position;
	}

	private native void jniGetPosition (long addr, float[] position);

	/**
	 * Sets the position of the shape
	 */
	public void setPosition (Vector2 position) {
		jniSetPosition(addr, position.x, position.y);
	}

	private native void jniSetPosition (long addr, float positionX, float positionY);
}