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- /* $XConsortium: XDrPoints.c,v 1.15 91/01/06 11:45:17 rws Exp $ */
- /* Copyright Massachusetts Institute of Technology 1986 */
-
- /*
- Permission to use, copy, modify, distribute, and sell this software and its
- documentation for any purpose is hereby granted without fee, provided that
- the above copyright notice appear in all copies and that both that
- copyright notice and this permission notice appear in supporting
- documentation, and that the name of M.I.T. not be used in advertising or
- publicity pertaining to distribution of the software without specific,
- written prior permission. M.I.T. makes no representations about the
- suitability of this software for any purpose. It is provided "as is"
- without express or implied warranty.
- */
-
- #include "Xlibint.h"
-
- XDrawPoints(dpy, d, gc, points, n_points, mode)
- register Display *dpy;
- Drawable d;
- GC gc;
- XPoint *points;
- int n_points;
- int mode; /* CoordMode */
- {
- register xPolyPointReq *req;
- register long nbytes;
- int n;
- int xoff, yoff;
- XPoint pt;
-
- xoff = yoff = 0;
- LockDisplay(dpy);
- FlushGC(dpy, gc);
- while (n_points) {
- GetReq(PolyPoint, req);
- req->drawable = d;
- req->gc = gc->gid;
- req->coordMode = mode;
- n = n_points;
- if (n > (dpy->max_request_size - req->length))
- n = dpy->max_request_size - req->length;
- req->length += n;
- nbytes = ((long)n) << 2; /* watch out for macros... */
- if (xoff || yoff) {
- pt.x = xoff + points->x;
- pt.y = yoff + points->y;
- Data16 (dpy, (short *) &pt, 4);
- if (nbytes > 4) {
- Data16 (dpy, (short *) (points + 1), nbytes - 4);
- }
- } else {
- Data16 (dpy, (short *) points, nbytes);
- }
- n_points -= n;
- if (n_points && (mode == CoordModePrevious)) {
- register XPoint *pptr = points;
- points += n;
- while (pptr != points) {
- xoff += pptr->x;
- yoff += pptr->y;
- pptr++;
- }
- } else
- points += n;
- }
- UnlockDisplay(dpy);
- SyncHandle();
- }
-