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SDL_rect.h
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
4 
5  This software is provided 'as-is', without any express or implied
6  warranty. In no event will the authors be held liable for any damages
7  arising from the use of this software.
8 
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12 
13  1. The origin of this software must not be misrepresented; you must not
14  claim that you wrote the original software. If you use this software
15  in a product, an acknowledgment in the product documentation would be
16  appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18  misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20 */
21 
28 #ifndef _SDL_rect_h
29 #define _SDL_rect_h
30 
31 #include "SDL_stdinc.h"
32 #include "SDL_error.h"
33 #include "SDL_pixels.h"
34 #include "SDL_rwops.h"
35 
36 #include "begin_code.h"
37 /* Set up for C function definitions, even when using C++ */
38 #ifdef __cplusplus
39 extern "C" {
40 #endif
41 
47 typedef struct SDL_Point
48 {
49  int x;
50  int y;
51 } SDL_Point;
52 
63 typedef struct SDL_Rect
64 {
65  int x, y;
66  int w, h;
67 } SDL_Rect;
68 
73 {
74  return ((!r) || (r->w <= 0) || (r->h <= 0)) ? SDL_TRUE : SDL_FALSE;
75 }
76 
81 {
82  return (a && b && (a->x == b->x) && (a->y == b->y) &&
83  (a->w == b->w) && (a->h == b->h)) ? SDL_TRUE : SDL_FALSE;
84 }
85 
92  const SDL_Rect * B);
93 
100  const SDL_Rect * B,
101  SDL_Rect * result);
102 
106 extern DECLSPEC void SDLCALL SDL_UnionRect(const SDL_Rect * A,
107  const SDL_Rect * B,
108  SDL_Rect * result);
109 
116  int count,
117  const SDL_Rect * clip,
118  SDL_Rect * result);
119 
126  rect, int *X1,
127  int *Y1, int *X2,
128  int *Y2);
129 
130 /* Ends C function definitions when using C++ */
131 #ifdef __cplusplus
132 }
133 #endif
134 #include "close_code.h"
135 
136 #endif /* _SDL_rect_h */
137 
138 /* vi: set ts=4 sw=4 expandtab: */
DECLSPEC SDL_bool SDLCALL SDL_IntersectRectAndLine(const SDL_Rect *rect, int *X1, int *Y1, int *X2, int *Y2)
Calculate the intersection of a rectangle and line segment.
Definition: SDL_rect.c:316
SDL_FORCE_INLINE SDL_bool SDL_RectEquals(const SDL_Rect *a, const SDL_Rect *b)
Returns true if the two rectangles are equal.
Definition: SDL_rect.h:80
SDL_bool
Definition: SDL_stdinc.h:116
The structure that defines a point.
Definition: SDL_rect.h:47
GLboolean GLboolean GLboolean GLboolean a
Definition: glew.h:8736
#define DECLSPEC
Definition: begin_code.h:62
DECLSPEC SDL_bool SDLCALL SDL_EnclosePoints(const SDL_Point *points, int count, const SDL_Rect *clip, SDL_Rect *result)
Calculate a minimal rectangle enclosing a set of points.
Definition: SDL_rect.c:192
#define SDLCALL
Definition: begin_code.h:72
SDL_FORCE_INLINE SDL_bool SDL_RectEmpty(const SDL_Rect *r)
Returns true if the rectangle has no area.
Definition: SDL_rect.h:72
#define SDL_FORCE_INLINE
Definition: begin_code.h:141
struct SDL_Rect SDL_Rect
A rectangle, with the origin at the upper left.
int x
Definition: SDL_rect.h:49
GLuint64EXT * result
Definition: glew.h:12708
DECLSPEC void SDLCALL SDL_UnionRect(const SDL_Rect *A, const SDL_Rect *B, SDL_Rect *result)
Calculate the union of two rectangles.
Definition: SDL_rect.c:129
DECLSPEC SDL_bool SDLCALL SDL_IntersectRect(const SDL_Rect *A, const SDL_Rect *B, SDL_Rect *result)
Calculate the intersection of two rectangles.
Definition: SDL_rect.c:75
int y
Definition: SDL_rect.h:50
GLint GLsizei count
Definition: gl2ext.h:1011
DECLSPEC SDL_bool SDLCALL SDL_HasIntersection(const SDL_Rect *A, const SDL_Rect *B)
Determine whether two rectangles intersect.
Definition: SDL_rect.c:28
int x
Definition: SDL_rect.h:65
int w
Definition: SDL_rect.h:66
int h
Definition: SDL_rect.h:66
GLdouble GLdouble GLdouble r
Definition: glew.h:1392
GLdouble GLdouble GLdouble b
Definition: glew.h:8383
GLuint GLdouble GLdouble GLint GLint const GLdouble * points
Definition: glew.h:3337
struct SDL_Point SDL_Point
The structure that defines a point.
int y
Definition: SDL_rect.h:65
A rectangle, with the origin at the upper left.
Definition: SDL_rect.h:63