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comparison touchTest/Iphone Test/touchTestIPhone2/touchTestIPhone/include/SDL_rect.h @ 4677:31607094315c

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Added Iphone project. Iphone multi-touch is now functional.
author jimtla
date Sat, 31 Jul 2010 01:24:50 +0400
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4676:99b4560b7aa1 4677:31607094315c
1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2010 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19 Sam Lantinga
20 slouken@libsdl.org
21 */
22
23 /**
24 * \file SDL_rect.h
25 *
26 * Header file for SDL_rect definition and management functions.
27 */
28
29 #ifndef _SDL_rect_h
30 #define _SDL_rect_h
31
32 #include "SDL_stdinc.h"
33 #include "SDL_error.h"
34 #include "SDL_pixels.h"
35 #include "SDL_rwops.h"
36
37 #include "begin_code.h"
38 /* Set up for C function definitions, even when using C++ */
39 #ifdef __cplusplus
40 /* *INDENT-OFF* */
41 extern "C" {
42 /* *INDENT-ON* */
43 #endif
44
45 /**
46 * \brief The structure that defines a point
47 *
48 * \sa SDL_EnclosePoints
49 */
50 typedef struct
51 {
52 int x;
53 int y;
54 } SDL_Point;
55
56 /**
57 * \brief A rectangle, with the origin at the upper left.
58 *
59 * \sa SDL_RectEmpty
60 * \sa SDL_RectEquals
61 * \sa SDL_HasIntersection
62 * \sa SDL_IntersectRect
63 * \sa SDL_UnionRect
64 * \sa SDL_EnclosePoints
65 */
66 typedef struct SDL_Rect
67 {
68 int x, y;
69 int w, h;
70 } SDL_Rect;
71
72 /**
73 * \brief Returns true if the rectangle has no area.
74 */
75 #define SDL_RectEmpty(X) (((X)->w <= 0) || ((X)->h <= 0))
76
77 /**
78 * \brief Returns true if the two rectangles are equal.
79 */
80 #define SDL_RectEquals(A, B) (((A)->x == (B)->x) && ((A)->y == (B)->y) && \
81 ((A)->w == (B)->w) && ((A)->h == (B)->h))
82
83 /**
84 * \brief Determine whether two rectangles intersect.
85 *
86 * \return SDL_TRUE if there is an intersection, SDL_FALSE otherwise.
87 */
88 extern DECLSPEC SDL_bool SDLCALL SDL_HasIntersection(const SDL_Rect * A,
89 const SDL_Rect * B);
90
91 /**
92 * \brief Calculate the intersection of two rectangles.
93 *
94 * \return SDL_TRUE if there is an intersection, SDL_FALSE otherwise.
95 */
96 extern DECLSPEC SDL_bool SDLCALL SDL_IntersectRect(const SDL_Rect * A,
97 const SDL_Rect * B,
98 SDL_Rect * result);
99
100 /**
101 * \brief Calculate the union of two rectangles.
102 */
103 extern DECLSPEC void SDLCALL SDL_UnionRect(const SDL_Rect * A,
104 const SDL_Rect * B,
105 SDL_Rect * result);
106
107 /**
108 * \brief Calculate a minimal rectangle enclosing a set of points
109 *
110 * \return SDL_TRUE if any points were within the clipping rect
111 */
112 extern DECLSPEC SDL_bool SDLCALL SDL_EnclosePoints(const SDL_Point * points,
113 int count,
114 const SDL_Rect * clip,
115 SDL_Rect * result);
116
117 /**
118 * \brief Calculate the intersection of a rectangle and line segment.
119 *
120 * \return SDL_TRUE if there is an intersection, SDL_FALSE otherwise.
121 */
122 extern DECLSPEC SDL_bool SDLCALL SDL_IntersectRectAndLine(const SDL_Rect *
123 rect, int *X1,
124 int *Y1, int *X2,
125 int *Y2);
126
127 /* Ends C function definitions when using C++ */
128 #ifdef __cplusplus
129 /* *INDENT-OFF* */
130 }
131 /* *INDENT-ON* */
132 #endif
133 #include "close_code.h"
134
135 #endif /* _SDL_rect_h */
136
137 /* vi: set ts=4 sw=4 expandtab: */