Android Open Source - droidengine2d Transparent Texture Material

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License

The source code is released under:

Apache License

Java Source Code

/*   Copyright 2013-2014 Miguel Vicente Linares
 *//  w w  w .  j  a  v  a2s. c  om
 *  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.miviclin.droidengine2d.graphics.material;

import com.miviclin.droidengine2d.graphics.texture.TextureRegion;

/**
 * This material has texture and variable opacity.
 * 
 * @author Miguel Vicente Linares
 * 
 */
public class TransparentTextureMaterial extends TextureMaterial {

  private float opacity;

  /**
   * Creates a TransparentTextureMaterial.
   * 
   * @param textureRegion TextureRegion.
   */
  public TransparentTextureMaterial(TextureRegion textureRegion) {
    this(textureRegion, 1.0f);
  }

  /**
   * Creates a TransparentTextureMaterial.
   * 
   * @param textureRegion TextureRegion.
   * @param opacity Opacity (value between 0.0f and 1.0f).
   */
  public TransparentTextureMaterial(TextureRegion textureRegion, float opacity) {
    super(textureRegion);
    checkOpacity(opacity);
    this.opacity = opacity;
  }

  /**
   * Returns the opacity of this material.
   * 
   * @return Opacity (value between 0.0f and 1.0f)
   */
  public float getOpacity() {
    return opacity;
  }

  /**
   * Sets the opacity of this material.
   * 
   * @param opacity (value between 0.0f and 1.0f).
   */
  public void setOpacity(float opacity) {
    checkOpacity(opacity);
    this.opacity = opacity;
  }

  /**
   * Checks that the specified opacity is a value between 0.0f and 1.0f and throws an exception in case it isn't.
   * 
   * @param opacity (value between 0.0f and 1.0f)
   */
  private void checkOpacity(float opacity) {
    if (opacity < 0 || opacity > 1) {
      throw new IllegalArgumentException("The opacity value must be a value between 0.0f and 1.0f");
    }
  }

}

Java Source Code List

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