131 static GLfloat angle = 0.0;  variable
152    GLfloat angle, da;  in gear()  local
169       angle = i * 2.0 * M_PI / teeth;  in gear()
170       glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);  in gear()
171       glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);  in gear()
173          glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);  in gear()
174          glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),  in gear()
183       angle = i * 2.0 * M_PI / teeth;  in gear()
185       glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);  in gear()
186       glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5);  in gear()
187       glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),  in gear()
189       glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),  in gear()
201       angle = i * 2.0 * M_PI / teeth;  in gear()
202       glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);  in gear()
203       glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);  in gear()
205          glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),  in gear()
207          glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);  in gear()
216       angle = i * 2.0 * M_PI / teeth;  in gear()
218       glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),  in gear()
220       glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),  in gear()
222       glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5);  in gear()
223       glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);  in gear()
232       angle = i * 2.0 * M_PI / teeth;  in gear()
234       glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);  in gear()
235       glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);  in gear()
236       u = r2 * cos(angle + da) - r1 * cos(angle);  in gear()
237       v = r2 * sin(angle + da) - r1 * sin(angle);  in gear()
242       glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5);  in gear()
243       glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5);  in gear()
244       glNormal3f(cos(angle + 1.5 * da), sin(angle + 1.5 * da), 0.0);  in gear()
245       glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),  in gear()
247       glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),  in gear()
249       u = r1 * cos(angle + 3 * da) - r2 * cos(angle + 2 * da);  in gear()
250       v = r1 * sin(angle + 3 * da) - r2 * sin(angle + 2 * da);  in gear()
252       glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),  in gear()
254       glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),  in gear()
256       glNormal3f(cos(angle + 3.5 * da), sin(angle + 3.5 * da), 0.0);  in gear()
271       angle = i * 2.0 * M_PI / teeth;  in gear()
272       glNormal3f(-cos(angle), -sin(angle), 0.0);  in gear()
273       glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);  in gear()
274       glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);  in gear()
292    glRotatef(angle, 0.0, 0.0, 1.0);  in draw()
298    glRotatef(-2.0 * angle - 9.0, 0.0, 0.0, 1.0);  in draw()
304    glRotatef(-2.0 * angle - 25.0, 0.0, 0.0, 1.0);  in draw()
504          angle = angle + ((double)speed * useconds) / 1000000.0;  in event_loop()
505          if (angle > 360.0)  in event_loop()
506             angle = angle - 360.0; /* don't lose precision! */  in event_loop()