1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
|
/**
* @(#) DrawColoredPrimitives2.java
* @(#) author: Joe Zimmerman (converted to Java by Sven Goethel)
*/
/* This program is free software under the license of LGPL */
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.lang.*;
import java.util.*;
import java.io.*;
import java.util.*;
import gl4java.GLContext;
import gl4java.awt.GLAnimCanvas;
import gl4java.applet.SimpleGLAnimApplet1;
public class DrawColoredPrimitives2 extends SimpleGLAnimApplet1
{
public void init()
{
super.init();
Dimension d = getSize();
canvas = new gldemo(d.width, d.height);
add("Center", canvas);
}
public static void main( String args[] ) {
DrawColoredPrimitives2 applet =
new DrawColoredPrimitives2();
Frame f = new Frame("DrawColoredPrimitives2");
f.addWindowListener( new WindowAdapter()
{
public void windowClosed(WindowEvent e)
{
System.exit(0);
}
public void windowClosing(WindowEvent e)
{
windowClosed(e);
}
}
);
f.setLayout(new BorderLayout());
f.add("Center", applet);
applet.setSize(500,300);
applet.init();
applet.start();
Dimension ps = applet.getPreferredSize();
f.setBounds(-100,-100,99,99);
f.setVisible(true);
f.setVisible(false);
f.setVisible(true);
Insets i = f.getInsets();
f.setBounds(0,0,
ps.width+i.left+i.right,
ps.height+i.top+i.bottom);
f.setVisible(true);
}
private class gldemo extends GLAnimCanvas
implements MouseListener, ActionListener
{
private PopupMenu menu = null;
private boolean menu_showing = false;
private boolean save_suspended = false;
private final String VIEW_FRONT = "View Front";
private final String VIEW_TOP = "View Top";
private final String VIEW_BOTTOM = "View Bottom";
final float M_PI = 3.14159265f;
final float M_PI_2 = 1.57079632f;
float rotate;
float rotationStep = 1;
int view = 0; /* 0 = front, 1 = top, 2 = bottom */
float LightAmbient[] = { 0.75f, 0.75f, 0.75f, 1.5f};
float LightDiffuse[] = { 1.0f, 1.0f, 1.0f, 0.9f};
float LightSpecular[] = { 0.8f, 0.8f, 0.8f, 1.0f};
public gldemo(int w, int h)
{
super(w, h);
GLContext.gljNativeDebug = false;
GLContext.gljClassDebug = false;
setAnimateFps(30.0);
}
public void preInit()
{
doubleBuffer = true;
stereoView = false;
}
public void init()
{
reshape(getSize().width, getSize().height);
gl.glEnable(GL_LIGHT0);
gl.glLightfv(GL_LIGHT0, GL_AMBIENT, LightAmbient);
gl.glLightfv(GL_LIGHT0, GL_DIFFUSE, LightDiffuse);
gl.glLightfv(GL_LIGHT0, GL_SPECULAR, LightSpecular);
glj.gljCheckGL();
menu = new PopupMenu("Options");
menu.add(VIEW_FRONT);
menu.add(VIEW_TOP);
menu.add(VIEW_BOTTOM);
menu.addActionListener(this);
add(menu);
addMouseListener(this);
}
public void doCleanup()
{
removeMouseListener(this);
menu.removeActionListener(this);
}
public void reshape(int width, int height)
{
gl.glMatrixMode(GL_PROJECTION);
gl.glLoadIdentity();
glu.gluPerspective(45, (float)width/(float)height, 1, 700);
gl.glMatrixMode(GL_MODELVIEW);
gl.glLoadIdentity();
gl.glViewport(0,0,width,height);
}
public void display()
{
if (glj.gljMakeCurrent() == false) return;
gl.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
gl.glMatrixMode(GL_MODELVIEW);
gl.glLoadIdentity();
gl.glTranslatef(0, 0, -5);
if(view==1)
{
gl.glRotatef(90f, 1, 0, 0);
} else if(view==2)
{
gl.glRotatef(-90f, 1, 0, 0);
}
gl.glColor4f(1, 1, 1, 1);
rotate+=rotationStep;
if(rotate>=180.0f || rotate<=0.0f)
rotationStep*=-1.0f;
gl.glRotatef(rotate, 0, 1, 0);
gl.glBegin(GL_POLYGON);
gl.glNormal3f( 1, 0, 0);
// top vertex
gl.glColor4f(1, 0, 0, 1); gl.glVertex3f( 0, 1, 0);
// bottom left vertex
gl.glColor4f(0, 1, 0, 1); gl.glVertex3f(-1, -1, 1);
// bottom right vertex
gl.glColor4f(0, 0, 1, 1); gl.glVertex3f( 1, -1, 1);
gl.glEnd();
gl.glBegin(GL_POLYGON);
gl.glNormal3f( 1, 0, 0);
// top vertex
gl.glColor4f(1, 0, 0, 1); gl.glVertex3f( 0, 1, 0);
// bottom left vertex
gl.glColor4f(0, 1, 0, 1); gl.glVertex3f( 1, -1, -1);
// bottom right vertex
gl.glColor4f(0, 0, 1, 1); gl.glVertex3f( 1, -1, 1);
gl.glEnd();
gl.glBegin(GL_POLYGON);
gl.glNormal3f( 1, 0, 0);
// top vertex
gl.glColor4f(1, 0, 0, 1); gl.glVertex3f( 0, 1, 0);
// bottom left vertex
gl.glColor4f(0, 1, 0, 1); gl.glVertex3f( 1, -1, -1);
// bottom right vertex
gl.glColor4f(0, 0, 1, 1); gl.glVertex3f(-1, -1, -1);
gl.glEnd();
gl.glBegin(GL_POLYGON);
gl.glNormal3f( 1, 0, 0);
// top vertex
gl.glColor4f(1, 0, 0, 1); gl.glVertex3f( 0, 1, 0);
// bottom left vertex
gl.glColor4f(0, 1, 0, 1); gl.glVertex3f(-1, -1, 1);
// bottom right vertex
gl.glColor4f(0, 0, 1, 1); gl.glVertex3f(-1, -1, -1);
gl.glEnd();
// bottom square polygon
gl.glBegin(GL_POLYGON);
gl.glNormal3f( 1, 0, 0);
gl.glColor4f(0, 0, 1, 1); gl.glVertex3f( 1, -1, 1);
gl.glColor4f(0, 1, 0, 1); gl.glVertex3f(-1, -1, 1);
gl.glColor4f(0, 0, 1, 1); gl.glVertex3f(-1, -1, -1);
gl.glColor4f(0, 1, 0, 1); gl.glVertex3f( 1, -1, -1);
gl.glEnd();
glj.gljSwap();
glj.gljCheckGL();
glj.gljFree();
}
// Methods required for the implementation of MouseListener
public void mouseEntered(MouseEvent evt)
{
}
public void mouseExited(MouseEvent evt)
{
}
public void mousePressed(MouseEvent evt)
{
if (!menu_showing)
{
if ((evt.getModifiers() & evt.BUTTON3_MASK) != 0)
{
menu_showing = true;
save_suspended = isSuspended();
if (!save_suspended)
{
setSuspended(true);
repaint(100);
try
{
Thread.currentThread().sleep(200);
}
catch (Exception e)
{ }
}
menu.show(this,evt.getX(),evt.getY());
}
else
{
// Must be left button.
if (isSuspended()) repaint();
}
}
else
{
menu_showing = false;
setSuspended(save_suspended);
}
}
public void mouseReleased(MouseEvent evt)
{
}
public void mouseClicked(MouseEvent evt)
{
}
// Method required for the implementation of ActionListener
public void actionPerformed(ActionEvent evt)
{
String c = evt.getActionCommand();
if (c.equals(VIEW_FRONT))
{
view=0;
}
else if (c.equals(VIEW_TOP))
{
view=1;
}
else if (c.equals(VIEW_BOTTOM))
{
view=2;
}
if (menu_showing)
{
menu_showing = false;
setSuspended(save_suspended);
}
}
}
}
|
