mirror of
https://gitlab.freedesktop.org/cairo/cairo.git
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95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
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/*
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* $XFree86: $
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*
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* Copyright <EFBFBD> 2002 Carl D. Worth
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of Carl
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* D. Worth not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior
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* permission. Carl D. Worth makes no representations about the
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* suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL,
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* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
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* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "xrint.h"
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void
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XrFillerInit(XrFiller *filler, XrGState *gstate, XrTraps *traps)
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{
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filler->gstate = gstate;
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filler->traps = traps;
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XrPolygonInit(&filler->polygon);
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}
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void
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XrFillerDeinit(XrFiller *filler)
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{
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XrPolygonDeinit(&filler->polygon);
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}
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XrError
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XrFillerAddEdge(void *closure, XPointFixed *p1, XPointFixed *p2)
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{
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XrFiller *filler = closure;
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XrPolygon *polygon = &filler->polygon;
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return XrPolygonAddEdge(polygon, p1, p2);
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}
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XrError
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XrFillerAddSpline (void *closure, XPointFixed *a, XPointFixed *b, XPointFixed *c, XPointFixed *d)
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{
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int i;
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XrError err = XrErrorSuccess;
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XrFiller *filler = closure;
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XrPolygon *polygon = &filler->polygon;
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XrGState *gstate = filler->gstate;
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XrSpline spline;
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XrSplineInit(&spline, a, b, c, d);
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XrSplineDecompose(&spline, gstate->tolerance);
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if (err)
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goto CLEANUP_SPLINE;
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for (i = 0; i < spline.num_pts; i++) {
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err = XrPolygonAddEdge(polygon,
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&spline.pt[i],
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i < spline.num_pts ? &spline.pt[i+1] : &spline.pt[0]);
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if (err)
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goto CLEANUP_SPLINE;
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}
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CLEANUP_SPLINE:
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XrSplineDeinit(&spline);
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return err;
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}
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XrError
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XrFillerDoneSubPath (void *closure, XrSubPathDone done)
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{
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return XrErrorSuccess;
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}
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XrError
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XrFillerDonePath (void *closure)
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{
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XrFiller *filler = closure;
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return XrTrapsTessellatePolygon(filler->traps, &filler->polygon, filler->gstate->winding);
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}
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