#include <ps2base.h>

Ps2Simple Ps2;

void DrawCircle( int xa, int ya, int z )
{
  GIFVecRL vec;
  
  vec.prim( PS2_GS_PRIM_PRIM_TRIFAN,
	    PS2_GS_PRIM_IIP_GOURAUD, //PS2_GS_PRIM_IIP_FLAT,
	    PS2_GS_PRIM_TME_OFF,            
	    PS2_GS_PRIM_FGE_OFF,            
	    PS2_GS_PRIM_ABE_ON,            
	    PS2_GS_PRIM_AA1_OFF,            
	    PS2_GS_PRIM_FST_STQ,            
	    PS2_GS_PRIM_CTXT_CONTEXT1,      
	    PS2_GS_PRIM_FIX_NOFIXDDA 
	    );

  vec.rgbaq( 0, 0, 0, 0, 0 );
  vec.xyzf2( 0, 0, z ); // Color anchored at middle :)

  ps2_gs_gparam *gp = ps2_gs_get_gparam();
  int xm = gp->width / 4;
  int ym = gp->height / 3;

  for( int i=0; i<=360; i++ ) {
    int x = (int) (Sin(i)*xm+.5);
    int y = (int) (Cos(i)*ym+.5);
    int r = (int)(255/180.0 * abs(i-180));
    int g = (int)(255/180.0 * abs((i+120)%360-180));
    int b = (int)(255/180.0 * abs((i+240)%360-180));
    vec.rgbaq( r, g, b, 0, 0 );
    vec.xyzf2( x+xa, y+ya, z );
  }

  vec.draw();
}

int main( int ac, char **av )
{
  Ps2.init( ac, av );
  Ps2.useStandardTestControls(); 
  Ps2.start();

  for (int a=0;;a++) {
    DrawCircle((int)(Sin(a)*50),(int)(Cos(a)*50), 1 );
    Ps2.flip();
    if( a == 360 )
      a = 0;
  }
}