| 1 | /* Libart_LGPL - library of basic graphic primitives |
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| 2 | * Copyright (C) 1998 Raph Levien |
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| 3 | * |
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| 4 | * This library is free software; you can redistribute it and/or |
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| 5 | * modify it under the terms of the GNU Library General Public |
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| 6 | * License as published by the Free Software Foundation; either |
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| 7 | * version 2 of the License, or (at your option) any later version. |
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| 8 | * |
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| 9 | * This library is distributed in the hope that it will be useful, |
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | * Library General Public License for more details. |
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| 13 | * |
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| 14 | * You should have received a copy of the GNU Library General Public |
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| 15 | * License along with this library; if not, write to the |
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| 16 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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| 17 | * Boston, MA 02111-1307, USA. |
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| 18 | */ |
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| 19 | |
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| 20 | #ifndef __ART_RECT_H__ |
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| 21 | #define __ART_RECT_H__ |
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| 22 | |
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| 23 | #ifdef __cplusplus |
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| 24 | extern "C" { |
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| 25 | #endif |
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| 26 | |
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| 27 | typedef struct _ArtDRect ArtDRect; |
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| 28 | typedef struct _ArtIRect ArtIRect; |
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| 29 | |
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| 30 | struct _ArtDRect { |
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| 31 | /*< public >*/ |
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| 32 | double x0, y0, x1, y1; |
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| 33 | }; |
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| 34 | |
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| 35 | struct _ArtIRect { |
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| 36 | /*< public >*/ |
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| 37 | int x0, y0, x1, y1; |
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| 38 | }; |
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| 39 | |
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| 40 | /* Make a copy of the rectangle. */ |
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| 41 | void art_irect_copy (ArtIRect *dest, const ArtIRect *src); |
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| 42 | |
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| 43 | /* Find the smallest rectangle that includes both source rectangles. */ |
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| 44 | void art_irect_union (ArtIRect *dest, |
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| 45 | const ArtIRect *src1, const ArtIRect *src2); |
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| 46 | |
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| 47 | /* Return the intersection of the two rectangles */ |
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| 48 | void art_irect_intersect (ArtIRect *dest, |
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| 49 | const ArtIRect *src1, const ArtIRect *src2); |
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| 50 | |
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| 51 | /* Return true if the rectangle is empty. */ |
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| 52 | int art_irect_empty (const ArtIRect *src); |
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| 53 | |
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| 54 | /* Make a copy of the rectangle. */ |
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| 55 | void art_drect_copy (ArtDRect *dest, const ArtDRect *src); |
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| 56 | |
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| 57 | /* Find the smallest rectangle that includes both source rectangles. */ |
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| 58 | void art_drect_union (ArtDRect *dest, |
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| 59 | const ArtDRect *src1, const ArtDRect *src2); |
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| 60 | |
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| 61 | /* Return the intersection of the two rectangles */ |
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| 62 | void art_drect_intersect (ArtDRect *dest, |
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| 63 | const ArtDRect *src1, const ArtDRect *src2); |
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| 64 | |
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| 65 | /* Return true if the rectangle is empty. */ |
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| 66 | int art_drect_empty (const ArtDRect *src); |
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| 67 | |
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| 68 | void |
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| 69 | art_drect_affine_transform (ArtDRect *dst, const ArtDRect *src, |
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| 70 | const double matrix[6]); |
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| 71 | |
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| 72 | void art_drect_to_irect (ArtIRect *dst, ArtDRect *src); |
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| 73 | |
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| 74 | #ifdef __cplusplus |
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| 75 | } |
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| 76 | #endif |
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| 77 | |
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| 78 | #endif |
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