lwjgl/src/java/org/lwjgl/test/input/MouseTest.java

/*
 * Copyright (c) 2002 Lightweight Java Game Library Project
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions 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 'Lightweight Java Game Library' nor the names of
 *   its contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.lwjgl.test.input;

import org.lwjgl.Display;
import org.lwjgl.DisplayMode;
import org.lwjgl.input.Mouse;
import org.lwjgl.input.Keyboard;
import org.lwjgl.opengl.*;
import org.lwjgl.opengl.GL;
import org.lwjgl.opengl.GLU;
import org.lwjgl.vector.Vector2f;

/**
 * $Id$
 * <br>
 * Mouse test
 *
 * @author Brian Matzon <brian@matzon.dk>
 * @version $Revision$
 */
public class MouseTest {

  /** OpenGL instance */
  private GL gl;

  /** GLU instance */
  private GLU glu;

  /** position of quad to draw */
  private Vector2f position = new Vector2f(320.0f, 240.0f);
  
  /** Display mode selected */
  private DisplayMode displayMode;

  /** Creates a new instance of MouseTest */
  public MouseTest() {
  }

  private void initialize() {
    //  find first display mode that allows us 640*480*16
    DisplayMode[] modes = Display.getAvailableDisplayModes();
    for (int i = 0; i < modes.length; i++) {
      if (modes[i].width == 640
        && modes[i].height == 480
        && modes[i].bpp >= 16) {
        displayMode = modes[i];
        break;
      }
    }
    
    // create display and opengl
    setupDisplay(false);

    try {
      Keyboard.create();
    } catch (Exception e) {
      e.printStackTrace();
      System.exit(-1);
    }
  }
  
  private void setupDisplay(boolean fullscreen) {
    try {
      Display.create(displayMode, 0, 0, 0, fullscreen, "MouseTest");
      gl = new GL();
      gl.create();

      glu = new GLU(gl);
    } catch (Exception e) {
      e.printStackTrace();
      System.exit(-1);
    }

    initializeOpenGL();    
  }

  private void initializeOpenGL() {
    gl.clearColor(0.0f, 0.0f, 0.0f, 0.0f);
    glu.ortho2D(0.0, Display.getWidth(), 0, Display.getHeight());
  }

  public void executeTest() {
    initialize();

    createMouse();

    wiggleMouse();

    Mouse.destroy();
    Keyboard.destroy();
    gl.destroy();
    BaseGL.destroy();
  }

  private void createMouse() {
    try {
      Mouse.create();
    } catch (Exception e) {
      e.printStackTrace();
      System.exit(-1);
    }
  }

  private void wiggleMouse() {
    while (!BaseGL.isCloseRequested()) {
      if(BaseGL.isMinimized()) {
        continue;
      }

      Mouse.poll();
      Keyboard.poll();
      
      if(Keyboard.isKeyDown(Keyboard.KEY_ESCAPE)) {
        return;
      }

      position.x += Mouse.dx;
      position.y -= Mouse.dy;
      
      if(position.x<0) {
        position.x = 0;
      } else if (position.x>Display.getWidth()-60) {
        position.x = Display.getWidth()-60;
      }
      
      if(position.y < 0) {
        position.y = 0;
      } else if (position.y>Display.getHeight()-30) {
        position.y = Display.getHeight()-30;
      }
      

      render();

      gl.swapBuffers();
    }
  }
  
  private void render() {
    gl.clear(GL.COLOR_BUFFER_BIT);

    gl.begin(GL.POLYGON);
    {
      float color = 1.0f;
      int buttonDown = 0;
      
      for(int i=0;i<Mouse.buttonCount; i++) {
        if(Mouse.isButtonDown(i)) {
          color = (1.0f / Mouse.buttonCount) * (i+1); 
          break; 
        }
      }
      gl.color3f(color, color, color);
      
      gl.vertex2f(position.x + 0.0f, position.y + 0.0f);
      gl.vertex2f(position.x + 0.0f, position.y + 30.0f);
      gl.vertex2f(position.x + 40.0f, position.y + 30.0f);
      gl.vertex2f(position.x + 60.0f, position.y + 15.f);
      gl.vertex2f(position.x + 40.0f, position.y + 0.0f);
    }
    gl.end();
  }

  /**
   * @param args the command line arguments
   */
  public static void main(String[] args) {
    MouseTest mt = new MouseTest();
    mt.executeTest();
  }
}