/*
 * Copyright (c) 2007 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * - Redistribution of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * 
 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * 
 * Neither the name of Sun Microsystems, Inc. or the names of
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
 * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
 * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
 * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
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 * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
 * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
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 * 
 * You acknowledge that this software is not designed or intended for use
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 */

package net.java.joglutils.msg.nodes;

import net.java.joglutils.msg.actions.Action;
import net.java.joglutils.msg.actions.GLRenderAction;
import net.java.joglutils.msg.elements.DepthTestElement;
import net.java.joglutils.msg.elements.GLDepthTestElement;

/** Represents depth test state. */
public class DepthTest extends Node {

  private boolean enabled = true;

  static {
    // Enable the elements this node affects for known actions
    GLDepthTestElement.enable(GLRenderAction.getDefaultState());
  }

  /** Sets whether depth testing is enabled. Defaults to true. */
  public void setEnabled(boolean enabled) {
    this.enabled = enabled;
  }

  /** Returns whether depth testing is enabled. Defaults to true. */
  public boolean getEnabled() {
    return enabled;
  }

  public void doAction(Action action) {
    if (DepthTestElement.isEnabled(action.getState())) {
      DepthTestElement.set(action.getState(), getEnabled());
    }
  }
}