void render(void)
{
unsigned int time = glutGet(GLUT_ELAPSED_TIME);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix(); {
camApply();
glTranslatef(0, 0, -5);
glRotatef(90, 1, 0, 0);
draw_obj(go);
} glPopMatrix();
// draw fps
char buf[128];
sprintf(buf, "fps: %.2f", fps);
glColor3f(0.8, 0, 0);
renderString(10, 10, buf, NULL);
// camera matrix
{
int y, x;
for (y=0; y<4; y++)
for (x=0; x<4; x++) {
sprintf(buf, "%+.3f", camera[y*4+x]);
renderString(10 + x * 80, 180 - y*20, buf, NULL);
}
}
float pos[3];
camGetPosition(pos);
sprintf(buf, "%+.3f %+.3f %+.3f", pos[0], pos[1], pos[2]);
renderString(10, 40, buf, NULL);
glutSwapBuffers();
if (key[27]) exit(0);
camBegin();
if (key['w']) camForward(+4 / fps);
if (key['s']) camForward(-4 / fps);
if (key['d']) camTurn(+90 / fps);
if (key['a']) camTurn(-90 / fps);
if (key['q']) camPan(+4 / fps);
if (key['e']) camPan(-4 / fps);
camEnd();
fps = 1000.0 / (glutGet(GLUT_ELAPSED_TIME) - time);
}
//this is where the actual drawing happens
void display() {
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
glLoadIdentity();
camApply(g_Camera);
drawFPS();
processList();
glFlush();
if (!g_bPicking) {
glutSwapBuffers();
}
else {
finishPicking();
}
}
