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