void
UnConvert(struct XYspace *S, /* relevant coordinate space */
struct fractpoint *pt, /* device coordinates */
double *xp, double *yp) /* where to store resulting x,y */
{
double x,y;
CoerceInverse(S);
x = pt->x;
y = pt->y;
*xp = S->tofract.inverse[0][0] * x + S->tofract.inverse[1][0] * y;
*yp = S->tofract.inverse[0][1] * x + S->tofract.inverse[1][1] * y;
}
void UnConvert(
register struct XYspace *S, /* relevant coordinate space */
register struct fractpoint *pt, /* device coordinates */
DOUBLE *xp, DOUBLE *yp) /* where to store resulting x,y */
{
DOUBLE x,y;
CoerceInverse(S);
x = pt->x;
y = pt->y;
*xp = S->tofract.inverse[0][0] * x + S->tofract.inverse[1][0] * y;
*yp = S->tofract.inverse[0][1] * x + S->tofract.inverse[1][1] * y;
}
void InitSpaces(void)
{
IDENTITY->type = SPACETYPE;
FillOutFcns(IDENTITY);
contexts[NULLCONTEXT].normal[1][0]
= contexts[NULLCONTEXT].normal[0][1]
= contexts[NULLCONTEXT].inverse[1][0]
= contexts[NULLCONTEXT].inverse[0][1] = 0.0;
contexts[NULLCONTEXT].normal[0][0]
= contexts[NULLCONTEXT].normal[1][1]
= contexts[NULLCONTEXT].inverse[0][0]
= contexts[NULLCONTEXT].inverse[1][1] = 1.0;
USER->flag |= ISIMMORTAL(ON);
CoerceInverse(USER);
}
