* June 2006
*/
-#define GL_GLEXT_PROTOTYPES
-
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
+#include <GL/glew.h>
#include <GL/glut.h>
#include "readtex.h"
#include "trackball.h"
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
#define DEG_TO_RAD(DEG) ((DEG) * M_PI / 180.0)
#define TEXTURE_FILE "../images/reflect.rgb"
glPushMatrix();
glRotatef(-90, 1, 0, 0);
glTranslatef(0, 0, pos);
- DrawPiston(eng);
+ if (eng->PistonList)
+ glCallList(eng->PistonList);
+ else
+ DrawPiston(eng);
glPopMatrix();
}
for (i = 0; i <= 360; i += 5) {
const float x1 = holeRadius * cos(DEG_TO_RAD(i));
const float y1 = holeRadius * sin(DEG_TO_RAD(i));
- float x2, y2;
+ float x2 = 0.0F, y2 = 0.0F;
if (i > 315 || i <= 45) {
x2 = squareSize;
y2 = squareSize * tan(DEG_TO_RAD(i));
glEnable(GL_TEXTURE_2D);
}
+ /* also print out a periodic fps to stdout. useful for trying to
+ * figure out the performance impact of rendering the string above
+ * with glBitmap.
+ */
+ {
+ static GLint T0 = 0;
+ static GLint Frames = 0;
+ GLint t = glutGet(GLUT_ELAPSED_TIME);
+
+ Frames++;
+
+ if (t - T0 >= 5000) {
+ GLfloat seconds = (t - T0) / 1000.0;
+ GLfloat fps = Frames / seconds;
+ printf("%d frames in %6.3f seconds = %6.3f FPS\n", Frames, seconds, fps);
+ fflush(stdout);
+ T0 = t;
+ Frames = 0;
+ }
+ }
+
+
glutSwapBuffers();
}
glutInitWindowSize(WinWidth, WinHeight);
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("OpenGL Engine Demo");
+ glewInit();
glutReshapeFunc(Reshape);
glutMouseFunc(Mouse);
glutMotionFunc(Motion);