com.badlogic.gdx.scenes.scene2d.actions.SizeToAction Maven / Gradle / Ivy

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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.scenes.scene2d.actions;

/** Moves an actor from its current size to a specific size.
 * @author Nathan Sweet */
public class SizeToAction extends TemporalAction {
	private float startWidth, startHeight;
	private float endWidth, endHeight;

	protected void begin () {
		startWidth = target.getWidth();
		startHeight = target.getHeight();
	}

	protected void update (float percent) {
		float width, height;
		if (percent == 0) {
			width = startWidth;
			height = startHeight;
		} else if (percent == 1) {
			width = endWidth;
			height = endHeight;
		} else {
			width = startWidth + (endWidth - startWidth) * percent;
			height = startHeight + (endHeight - startHeight) * percent;
		}
		target.setSize(width, height);
	}

	public void setSize (float width, float height) {
		endWidth = width;
		endHeight = height;
	}

	public float getWidth () {
		return endWidth;
	}

	public void setWidth (float width) {
		endWidth = width;
	}

	public float getHeight () {
		return endHeight;
	}

	public void setHeight (float height) {
		endHeight = height;
	}
}