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113 lines
3.7 KiB
C
113 lines
3.7 KiB
C
/* $TOG: mifpoly.h /main/10 1998/02/09 14:47:09 kaleb $ */
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/***********************************************************
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Copyright 1987, 1998 The Open Group
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All Rights Reserved.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of Digital not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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******************************************************************/
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#ifndef MIFPOLY_H
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#define MIFPOLY_H 1
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#define EPSILON 0.000001
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#define ISEQUAL(a,b) (fabs((a) - (b)) <= EPSILON)
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#define UNEQUAL(a,b) (fabs((a) - (b)) > EPSILON)
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#define WITHINHALF(a, b) (((a) - (b) > 0.0) ? (a) - (b) < 0.5 : \
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(b) - (a) <= 0.5)
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#define ROUNDTOINT(x) ((int) (((x) > 0.0) ? ((x) + 0.5) : ((x) - 0.5)))
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#define ISZERO(x) (fabs((x)) <= EPSILON)
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#define PTISEQUAL(a,b) (ISEQUAL(a.x,b.x) && ISEQUAL(a.y,b.y))
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#define PTUNEQUAL(a,b) (UNEQUAL(a.x,b.x) || UNEQUAL(a.y,b.y))
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#define PtEqual(a, b) (((a).x == (b).x) && ((a).y == (b).y))
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#define NotEnd 0
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#define FirstEnd 1
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#define SecondEnd 2
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#define SQSECANT 108.856472512142 /* 1/sin^2(11/2) - for 11o miter cutoff */
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#define D2SECANT 5.21671526231167 /* 1/2*sin(11/2) - max extension per width */
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#ifndef ICIEL
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#ifdef NOINLINEICEIL
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#define ICEIL(x) ((int)ceil(x))
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#else
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#ifdef __GNUC__
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#define ICEIL ICIEL
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static __inline int ICEIL(x)
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double x;
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{
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int _cTmp = x;
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return ((x == _cTmp) || (x < 0.0)) ? _cTmp : _cTmp+1;
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}
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#else
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#define ICEIL(x) ((((x) == (_cTmp = (x))) || ((x) < 0.0)) ? _cTmp : _cTmp+1)
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#define ICEILTEMPDECL static int _cTmp;
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#endif
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#endif
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#endif
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/* Point with sub-pixel positioning. In this case we use doubles, but
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* see mifpolycon.c for other suggestions
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*/
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typedef struct _SppPoint {
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double x, y;
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} SppPointRec, *SppPointPtr;
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typedef struct _SppArc {
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double x, y, width, height;
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double angle1, angle2;
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} SppArcRec, *SppArcPtr;
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/* mifpolycon.c */
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extern void miFillSppPoly(
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#if NeedFunctionPrototypes
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GdkDrawable* /*dst*/,
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GdkGC* /*pgc*/,
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int /*count*/,
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SppPointPtr /*ptsIn*/,
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int /*xTrans*/,
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int /*yTrans*/,
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double /*xFtrans*/,
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double /*yFtrans*/
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#endif
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);
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#endif /* MIFPOLY_H */
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