struct displayfuncs {
void (*init) ();
} funcs;
struct gpsdisplay {
struct displayfuncs *funcs;
};
static void PSMyArc(double cx, double cy, double radx, double rady, double sa,
double ta)
{
double ea;
double temp;
ea = sa + ta;
while (sa < ea) {
temp = ((sa + 90) / 90) * 90;
PSDoArc(cx, sa, ea < temp ? ea : temp);
sa = temp;
}
}
static void PSDrawElipse()
{
float cx;
float cy;
float radx;
float rady;
if (radx != rady)
PSMyArc(cx, cy, radx, rady, 0, 360);
}
static void PSDrawFillCircle()
{
PSDrawElipse();
}
static struct displayfuncs psfuncs[] = {
PSDrawFillCircle
};
void _GPSDraw_CreateDisplay()
{
struct gpsdisplay *gdisp;
gdisp->funcs = (void *)&psfuncs;
}