001 package com.croftsoft.apps.savor;
002
003 import java.awt.*;
004 import java.awt.event.*;
005 import java.util.*;
006
007 import net.java.games.jogl.GL;
008 import net.java.games.jogl.GLCapabilities;
009 import net.java.games.jogl.GLDrawable;
010 import net.java.games.jogl.GLU;
011
012 import org.jdesktop.jdic.screensaver.JOGLScreensaver;
013 import org.jdesktop.jdic.screensaver.ScreensaverContext;
014 import org.jdesktop.jdic.screensaver.ScreensaverSettings;
015
016 /*********************************************************************
017 * CroftSoft Savor.
018 *
019 * @version
020 * $Id: SavorJogl.java,v 1.1 2006/12/09 06:31:36 croft Exp $
021 * @since
022 * 2006-09-26
023 * @author
024 * <a href="https://www.croftsoft.com/">David Wallace Croft</a>
025 *********************************************************************/
026
027 public final class SavorJogl
028 extends JOGLScreensaver
029 //////////////////////////////////////////////////////////////////////
030 //////////////////////////////////////////////////////////////////////
031 {
032
033 private static final String PROPERTY_OVAL_SIZE = "ovalSize";
034
035 private static final String [ ] PROPERTY_VALUES = {
036 "tiny",
037 "small",
038 "medium",
039 "large" };
040
041 private static final int [ ] OVAL_SIZE_DIVISORS = {
042 Integer.MAX_VALUE,
043 8,
044 4,
045 2 };
046
047 private static final long FRAME_PERIOD = 200;
048
049 //
050
051 private final Map<String, Integer> ovalSizeMap;
052
053 private final Random random;
054
055 //
056
057 private int
058 ovalSize,
059 ovalSizeDivisor,
060 width,
061 height;
062
063 private boolean
064 toggle,
065 triangle;
066
067
068 //////////////////////////////////////////////////////////////////////
069 //////////////////////////////////////////////////////////////////////
070
071 public SavorJogl ( )
072 //////////////////////////////////////////////////////////////////////
073 {
074 random = new Random ( );
075
076 ovalSizeMap = new HashMap<String, Integer> ( );
077
078 for ( int i = 0; i < PROPERTY_VALUES.length; i++ )
079 {
080 ovalSizeMap.put (
081 PROPERTY_VALUES [ i ],
082 new Integer ( OVAL_SIZE_DIVISORS [ i ] ) );
083 }
084 }
085
086 //////////////////////////////////////////////////////////////////////
087 //////////////////////////////////////////////////////////////////////
088
089 @Override
090 public GLCapabilities getGLCapabilities ( )
091 //////////////////////////////////////////////////////////////////////
092 {
093 final GLCapabilities glCapabilities = new GLCapabilities ( );
094
095 glCapabilities.setDoubleBuffered ( false );
096
097 return glCapabilities;
098 }
099
100 public void init ( final GLDrawable glDrawable )
101 //////////////////////////////////////////////////////////////////////
102 {
103 final GL gl = glDrawable.getGL ( );
104
105 gl.glClearColor ( 0, 0, 0, 0 );
106
107 ovalSizeDivisor
108 = OVAL_SIZE_DIVISORS [ OVAL_SIZE_DIVISORS.length - 1 ];
109
110 final ScreensaverContext screensaverContext = getContext ( );
111
112 final ScreensaverSettings screensaverSettings
113 = screensaverContext.getSettings ( );
114
115 String propertyValue
116 = screensaverSettings.getProperty ( PROPERTY_OVAL_SIZE );
117
118 if ( propertyValue != null )
119 {
120 propertyValue = propertyValue.trim ( ).toLowerCase ( );
121
122 final Integer ovalSizeDivisorInteger
123 = ovalSizeMap.get ( propertyValue );
124
125 if ( ovalSizeDivisorInteger != null )
126 {
127 ovalSizeDivisor = ovalSizeDivisorInteger.intValue ( );
128 }
129 }
130
131 final Component component = screensaverContext.getComponent ( );
132
133 component.addKeyListener (
134 new KeyAdapter ( )
135 {
136 @Override
137 public void keyTyped ( final KeyEvent keyEvent )
138 {
139 final char keyChar = keyEvent.getKeyChar ( );
140
141 if ( keyChar == ' ' )
142 {
143 toggle = true;
144 }
145 else
146 {
147 destroy ( );
148 }
149 }
150 } );
151
152 component.requestFocus ( );
153 }
154
155 public void reshape (
156 final GLDrawable glDrawable,
157 final int x,
158 final int y,
159 final int width,
160 int height )
161 //////////////////////////////////////////////////////////////////////
162 {
163 final GL gl = glDrawable.getGL ( );
164
165 final GLU glu = glDrawable.getGLU();
166
167 gl.glViewport ( x, y, width, height);
168
169 gl.glMatrixMode ( GL.GL_PROJECTION );
170
171 gl.glLoadIdentity ( );
172
173 glu.gluOrtho2D ( 0, width, 0, height );
174
175 ovalSize = Math.max (
176 1,
177 Math.min ( width, height ) / ovalSizeDivisor );
178
179 this.width = width + 2 * ovalSize;
180
181 this.height = height + 2 * ovalSize;
182
183 gl.glClear ( GL.GL_COLOR_BUFFER_BIT );
184 }
185
186 public void displayChanged (
187 final GLDrawable arg0,
188 final boolean arg1,
189 final boolean arg2 )
190 //////////////////////////////////////////////////////////////////////
191 {
192 // ignore
193 }
194
195 public void display ( final GLDrawable glDrawable )
196 //////////////////////////////////////////////////////////////////////
197 {
198 final int x
199 = ( int ) ( Math.random ( ) * width ) - ovalSize;
200
201 final int y
202 = ( int ) ( Math.random ( ) * height ) - ovalSize;
203
204 final int ovalWidth = Math.max (
205 1, ( int ) ( ovalSize * ( 1 + 0.2 * random.nextGaussian ( ) ) ) );
206
207 final int ovalHeight = Math.max (
208 1, ( int ) ( ovalSize * ( 1 + 0.2 * random.nextGaussian ( ) ) ) );
209
210 final GL gl = glDrawable.getGL ( );
211
212 if ( toggle )
213 {
214 toggle = false;
215
216 triangle = !triangle;
217
218 gl.glClear ( GL.GL_COLOR_BUFFER_BIT );
219 }
220
221 gl.glColor3f (
222 ( float ) Math.random ( ),
223 ( float ) Math.random ( ),
224 ( float ) Math.random ( ) );
225
226 gl.glBegin ( GL.GL_POLYGON );
227
228 gl.glVertex2i ( x, y );
229
230 gl.glVertex2i ( x + ovalWidth, y );
231
232 if ( triangle )
233 {
234 gl.glVertex2i ( x + ovalWidth / 2, y + ovalHeight );
235 }
236 else
237 {
238 gl.glVertex2i ( x + ovalWidth, y + ovalHeight );
239
240 gl.glVertex2i ( x, y + ovalHeight );
241 }
242
243 gl.glEnd ( );
244
245 try
246 {
247 Thread.sleep ( FRAME_PERIOD );
248 }
249 catch ( final InterruptedException ex )
250 {
251 // ignore
252 }
253 }
254
255 //////////////////////////////////////////////////////////////////////
256 //////////////////////////////////////////////////////////////////////
257 }