void exibicaoPrincipal(void)
{
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
gluOrtho2D(-20, 20, -20, 20);
glMatrixMode (GL_MODELVIEW);
glLoadIdentity ();
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//desenha circulo
glColor3f(0.0f,0.0,0.0);
desenhaCirculo(RAIO_EXTERNO,0.f,0.f);
calculaQuadrado(RAIO_EXTERNO);
desenhaQuadrado();
desenhaJoystick();
glutSwapBuffers();
}
void drawGround(){
float halfW, halfL;
float limitX, limitZ, startX, startZ;
for(int i=0; i<NUMGROUNDS; i++){
halfW = ground[i].wFactor/2;
halfL = ground[i].lFactor/2;
int counter = 0;
limitX = ground[i].centerX + ground[i].width/2 ;//- ground[i].wFactor;
limitZ = ground[i].centerZ + ground[i].length/2 ;//- ground[i].lFactor;
startZ = ground[i].centerZ - ground[i].length/2 + ground[i].lFactor;
startX = ground[i].centerX - ground[i].width/2 + ground[i].wFactor;
for(int cz = startZ; cz <= limitZ; cz += ground[i].lFactor ){
for(int cx = startX; cx <= limitX; cx += ground[i].wFactor ){
desenhaQuadrado(
cx - halfW, 0, cz + halfL,
cx - halfW, 0, cz - halfL,
cx + halfW, 0, cz + halfL,
cx + halfW, 0, cz - halfL,
ground[i].normal[0], ground[i].normal[1], ground[i].normal[2],
ground[i].color[0], ground[i].color[1], ground[i].color[2], ground[i].color[3]
);
counter++;
}
}
}
}