LNBezierDef.java

/**
 * Copyright 2008 - 2012
 * 
 * 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.
 * 
 * @project loon
 * @author cping
 * @email：javachenpeng@yahoo.com
 * @version 0.3.3
 */
package loon.action.sprite.node;

import loon.core.geom.Vector2f;
import loon.utils.MathUtils;

public class LNBezierDef {

	public Vector2f endPosition;

	public Vector2f controlPoint_1;

	public Vector2f controlPoint_2;
	

	public LNBezierDef() {

	}

	public static float bezierAt(float a, float b, float c, float d, float t) {
		return (MathUtils.pow(1 - t, 3) * a + 3 * t * (MathUtils.pow(1 - t, 2))
				* b + 3 * MathUtils.pow(t, 2) * (1 - t) * c + MathUtils.pow(t,
				3) * d);
	}

}