struct XYspace *
Context(pointer device, /* device token */
double units) /* multiples of one inch */
{
double M[2][2]; /* device transformation matrix */
register int n; /* will hold device context number */
register struct XYspace *S; /* XYspace constructed */
ARGCHECK((device == NULL), "Context of NULLDEVICE not allowed",
NULL, IDENTITY, (0), struct XYspace *);
ARGCHECK((units == 0.0), "Context: bad units", NULL, IDENTITY, (0), struct XYspace *);
n = FindDeviceContext(device);
LONGCOPY(M, contexts[n].normal, sizeof(M));
M[0][0] *= units;
M[0][1] *= units;
M[1][0] *= units;
M[1][1] *= units;
S = (struct XYspace *)Xform(IDENTITY, M);
S->context = n;
return(S);
}
struct XYspace *Context(
void *device, /* device token */
DOUBLE units) /* multiples of one inch */
{
DOUBLE M[2][2]; /* device transformation matrix */
register int n; /* will hold device context number */
register struct XYspace *S; /* XYspace constructed */
IfTrace2((MustTraceCalls),"Context(%p, %f)\n", device, units);
ARGCHECK((device == NULL), "Context of NULLDEVICE not allowed",
NULL, IDENTITY, (0), struct XYspace *);
ARGCHECK((units == 0.0), "Context: bad units", NULL, IDENTITY, (0), struct XYspace *);
n = FindDeviceContext(device);
INT32COPY(M, contexts[n].normal, sizeof(M));
M[0][0] *= units;
M[0][1] *= units;
M[1][0] *= units;
M[1][1] *= units;
S = (struct XYspace *)Xform(IDENTITY, M);
S->context = n;
return(S);
}
