| 1 | /***********************************************************
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| 2 |
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| 3 | Copyright 1987, 1998 The Open Group
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| 4 |
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| 5 | Permission to use, copy, modify, distribute, and sell this software and its
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| 6 | documentation for any purpose is hereby granted without fee, provided that
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| 7 | the above copyright notice appear in all copies and that both that
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| 8 | copyright notice and this permission notice appear in supporting
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| 9 | documentation.
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| 10 |
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| 11 | The above copyright notice and this permission notice shall be included in
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| 12 | all copies or substantial portions of the Software.
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| 13 |
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| 14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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| 15 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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| 16 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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| 17 | OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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| 18 | AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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| 19 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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| 20 |
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| 21 | Except as contained in this notice, the name of The Open Group shall not be
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| 22 | used in advertising or otherwise to promote the sale, use or other dealings
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| 23 | in this Software without prior written authorization from The Open Group.
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| 24 |
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| 25 | Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
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| 26 |
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| 27 | All Rights Reserved
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| 28 |
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| 29 | Permission to use, copy, modify, and distribute this software and its
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| 30 | documentation for any purpose and without fee is hereby granted,
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| 31 | provided that the above copyright notice appear in all copies and that
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| 32 | both that copyright notice and this permission notice appear in
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| 33 | supporting documentation, and that the name of Digital not be
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| 34 | used in advertising or publicity pertaining to distribution of the
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| 35 | software without specific, written prior permission.
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| 36 |
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| 37 | DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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| 38 | ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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| 39 | DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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| 40 | ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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| 41 | WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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| 42 | ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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| 43 | SOFTWARE.
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| 44 |
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| 45 | ******************************************************************/
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| 46 |
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| 47 | #ifndef __MIFPOLY_H__
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| 48 | #define __MIFPOLY_H__
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| 49 |
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| 50 | #include <X11/Xfuncproto.h>
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| 51 |
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| 52 | #define EPSILON 0.000001
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| 53 | #define ISEQUAL(a,b) (fabs((a) - (b)) <= EPSILON)
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| 54 | #define UNEQUAL(a,b) (fabs((a) - (b)) > EPSILON)
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| 55 | #define WITHINHALF(a, b) (((a) - (b) > 0.0) ? (a) - (b) < 0.5 : \
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| 56 | (b) - (a) <= 0.5)
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| 57 | #define ROUNDTOINT(x) ((int) (((x) > 0.0) ? ((x) + 0.5) : ((x) - 0.5)))
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| 58 | #define ISZERO(x) (fabs((x)) <= EPSILON)
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| 59 | #define PTISEQUAL(a,b) (ISEQUAL(a.x,b.x) && ISEQUAL(a.y,b.y))
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| 60 | #define PTUNEQUAL(a,b) (UNEQUAL(a.x,b.x) || UNEQUAL(a.y,b.y))
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| 61 | #define PtEqual(a, b) (((a).x == (b).x) && ((a).y == (b).y))
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| 62 |
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| 63 | #define NotEnd 0
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| 64 | #define FirstEnd 1
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| 65 | #define SecondEnd 2
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| 66 |
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| 67 | #define SQSECANT 108.856472512142 /* 1/sin^2(11/2) - for 11o miter cutoff */
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| 68 | #define D2SECANT 5.21671526231167 /* 1/2*sin(11/2) - max extension per width */
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| 69 |
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| 70 | static _X_INLINE int
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| 71 | ICEIL(double x)
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| 72 | {
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| 73 | int _cTmp = x;
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| 74 |
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| 75 | return ((x == _cTmp) || (x < 0.0)) ? _cTmp : _cTmp + 1;
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| 76 | }
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| 77 |
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| 78 | /* Point with sub-pixel positioning. In this case we use doubles, but
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| 79 | * see mifpolycon.c for other suggestions
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| 80 | */
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| 81 | typedef struct _SppPoint {
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| 82 | double x, y;
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| 83 | } SppPointRec, *SppPointPtr;
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| 84 |
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| 85 | typedef struct _SppArc {
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| 86 | double x, y, width, height;
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| 87 | double angle1, angle2;
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| 88 | } SppArcRec, *SppArcPtr;
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| 89 |
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| 90 | /* mifpolycon.c */
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| 91 |
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| 92 | extern _X_EXPORT void miFillSppPoly(DrawablePtr /*dst */ ,
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| 93 | GCPtr /*pgc */ ,
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| 94 | int /*count */ ,
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| 95 | SppPointPtr /*ptsIn */ ,
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| 96 | int /*xTrans */ ,
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| 97 | int /*yTrans */ ,
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| 98 | double /*xFtrans */ ,
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| 99 | double /*yFtrans */
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| 100 | );
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| 101 |
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| 102 | #endif /* __MIFPOLY_H__ */
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