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Diffstat (limited to '3rdparty/include/SDL2/SDL_rect.h')
| -rw-r--r-- | 3rdparty/include/SDL2/SDL_rect.h | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/3rdparty/include/SDL2/SDL_rect.h b/3rdparty/include/SDL2/SDL_rect.h new file mode 100644 index 0000000..47f0d20 --- /dev/null +++ b/3rdparty/include/SDL2/SDL_rect.h @@ -0,0 +1,174 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ + +/** + * \file SDL_rect.h + * + * Header file for SDL_rect definition and management functions. + */ + +#ifndef SDL_rect_h_ +#define SDL_rect_h_ + +#include "SDL_stdinc.h" +#include "SDL_error.h" +#include "SDL_pixels.h" +#include "SDL_rwops.h" + +#include "begin_code.h" +/* Set up for C function definitions, even when using C++ */ +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \brief The structure that defines a point (integer) + * + * \sa SDL_EnclosePoints + * \sa SDL_PointInRect + */ +typedef struct SDL_Point +{ + int x; + int y; +} SDL_Point; + +/** + * \brief The structure that defines a point (floating point) + * + * \sa SDL_EnclosePoints + * \sa SDL_PointInRect + */ +typedef struct SDL_FPoint +{ + float x; + float y; +} SDL_FPoint; + + +/** + * \brief A rectangle, with the origin at the upper left (integer). + * + * \sa SDL_RectEmpty + * \sa SDL_RectEquals + * \sa SDL_HasIntersection + * \sa SDL_IntersectRect + * \sa SDL_UnionRect + * \sa SDL_EnclosePoints + */ +typedef struct SDL_Rect +{ + int x, y; + int w, h; +} SDL_Rect; + + +/** + * \brief A rectangle, with the origin at the upper left (floating point). + */ +typedef struct SDL_FRect +{ + float x; + float y; + float w; + float h; +} SDL_FRect; + + +/** + * \brief Returns true if point resides inside a rectangle. + */ +SDL_FORCE_INLINE SDL_bool SDL_PointInRect(const SDL_Point *p, const SDL_Rect *r) +{ + return ( (p->x >= r->x) && (p->x < (r->x + r->w)) && + (p->y >= r->y) && (p->y < (r->y + r->h)) ) ? SDL_TRUE : SDL_FALSE; +} + +/** + * \brief Returns true if the rectangle has no area. + */ +SDL_FORCE_INLINE SDL_bool SDL_RectEmpty(const SDL_Rect *r) +{ + return ((!r) || (r->w <= 0) || (r->h <= 0)) ? SDL_TRUE : SDL_FALSE; +} + +/** + * \brief Returns true if the two rectangles are equal. + */ +SDL_FORCE_INLINE SDL_bool SDL_RectEquals(const SDL_Rect *a, const SDL_Rect *b) +{ + return (a && b && (a->x == b->x) && (a->y == b->y) && + (a->w == b->w) && (a->h == b->h)) ? SDL_TRUE : SDL_FALSE; +} + +/** + * \brief Determine whether two rectangles intersect. + * + * \return SDL_TRUE if there is an intersection, SDL_FALSE otherwise. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_HasIntersection(const SDL_Rect * A, + const SDL_Rect * B); + +/** + * \brief Calculate the intersection of two rectangles. + * + * \return SDL_TRUE if there is an intersection, SDL_FALSE otherwise. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_IntersectRect(const SDL_Rect * A, + const SDL_Rect * B, + SDL_Rect * result); + +/** + * \brief Calculate the union of two rectangles. + */ +extern DECLSPEC void SDLCALL SDL_UnionRect(const SDL_Rect * A, + const SDL_Rect * B, + SDL_Rect * result); + +/** + * \brief Calculate a minimal rectangle enclosing a set of points + * + * \return SDL_TRUE if any points were within the clipping rect + */ +extern DECLSPEC SDL_bool SDLCALL SDL_EnclosePoints(const SDL_Point * points, + int count, + const SDL_Rect * clip, + SDL_Rect * result); + +/** + * \brief Calculate the intersection of a rectangle and line segment. + * + * \return SDL_TRUE if there is an intersection, SDL_FALSE otherwise. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_IntersectRectAndLine(const SDL_Rect * + rect, int *X1, + int *Y1, int *X2, + int *Y2); + +/* Ends C function definitions when using C++ */ +#ifdef __cplusplus +} +#endif +#include "close_code.h" + +#endif /* SDL_rect_h_ */ + +/* vi: set ts=4 sw=4 expandtab: */ |