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088440ab12
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4537 8ced0084-cf51-0410-be5f-012b33b47a6e
116 lines
3.3 KiB
C
116 lines
3.3 KiB
C
/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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/**
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* \file SDL_rect.h
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*
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* Header file for SDL_rect definition and management functions.
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*/
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#ifndef _SDL_rect_h
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#define _SDL_rect_h
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#include "SDL_stdinc.h"
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#include "SDL_error.h"
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#include "SDL_pixels.h"
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#include "SDL_rwops.h"
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#include "begin_code.h"
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/* Set up for C function definitions, even when using C++ */
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#ifdef __cplusplus
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/* *INDENT-OFF* */
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extern "C" {
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/* *INDENT-ON* */
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#endif
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/**
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* \brief A rectangle, with the origin at the upper left.
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*
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* \sa SDL_RectEmpty
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* \sa SDL_RectEquals
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* \sa SDL_HasIntersection
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* \sa SDL_IntersectRect
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* \sa SDL_UnionRect
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*/
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typedef struct SDL_Rect
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{
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int x, y;
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int w, h;
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} SDL_Rect;
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/**
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* \brief Returns true if the rectangle has no area.
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*/
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#define SDL_RectEmpty(X) (((X)->w <= 0) || ((X)->h <= 0))
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/**
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* \brief Returns true if the two rectangles are equal.
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*/
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#define SDL_RectEquals(A, B) (((A)->x == (B)->x) && ((A)->y == (B)->y) && \
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((A)->w == (B)->w) && ((A)->h == (B)->h))
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/**
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* \brief Determine whether two rectangles intersect.
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*
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* \return SDL_TRUE if there is an intersection, SDL_FALSE otherwise.
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*/
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extern DECLSPEC SDL_bool SDLCALL SDL_HasIntersection(const SDL_Rect * A,
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const SDL_Rect * B);
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/**
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* \brief Calculate the intersection of two rectangles.
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*
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* \return SDL_TRUE if there is an intersection, SDL_FALSE otherwise.
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*/
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extern DECLSPEC SDL_bool SDLCALL SDL_IntersectRect(const SDL_Rect * A,
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const SDL_Rect * B,
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SDL_Rect * result);
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/**
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* \brief Calculate the union of two rectangles.
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*/
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extern DECLSPEC void SDLCALL SDL_UnionRect(const SDL_Rect * A,
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const SDL_Rect * B,
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SDL_Rect * result);
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/**
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* \brief Calculate the intersection of a rectangle and line segment.
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*
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* \return SDL_TRUE if there is an intersection, SDL_FALSE otherwise.
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*/
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extern DECLSPEC SDL_bool SDLCALL SDL_IntersectRectAndLine(const SDL_Rect *
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rect, int *X1,
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int *Y1, int *X2,
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int *Y2);
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/* Ends C function definitions when using C++ */
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#ifdef __cplusplus
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/* *INDENT-OFF* */
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}
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/* *INDENT-ON* */
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#endif
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#include "close_code.h"
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#endif /* _SDL_rect_h */
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/* vi: set ts=4 sw=4 expandtab: */
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