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annotate include/SDL_rect.h @ 2507:8ef1d0f4d0c1 gsoc2008_force_feedback

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Gain is set to max on haptic device open. Autocenter is disabled on haptic device open. Maximum gain can be set by SDL_HAPTIC_GAIN_MAX.
author Edgar Simo <bobbens@gmail.com>
date Tue, 08 Jul 2008 19:55:12 +0000
parents 12ea0fdc0df2
children 99210400e8b9
rev   line source
2275
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 /**
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24 * \file SDL_rect.h
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25 *
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26 * Header file for SDL_rect definition and management functions
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27 */
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28
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29 #ifndef _SDL_rect_h
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30 #define _SDL_rect_h
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31
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32 #include "SDL_stdinc.h"
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33 #include "SDL_error.h"
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34 #include "SDL_pixels.h"
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35 #include "SDL_rwops.h"
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36
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37 #include "begin_code.h"
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38 /* Set up for C function definitions, even when using C++ */
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39 #ifdef __cplusplus
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40 /* *INDENT-OFF* */
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41 extern "C" {
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42 /* *INDENT-ON* */
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43 #endif
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44
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45 /**
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46 * \struct SDL_Rect
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47 *
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48 * \brief A rectangle, with the origin at the upper left.
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49 *
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50 * \sa SDL_RectEmpty
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51 * \sa SDL_RectEquals
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52 * \sa SDL_HasIntersection
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53 * \sa SDL_IntersectRect
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54 * \sa SDL_UnionRect
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55 */
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56 typedef struct SDL_Rect
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57 {
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58 int x, y;
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59 int w, h;
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60 } SDL_Rect;
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61
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62 /**
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63 * \def SDL_RectEmpty()
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64 *
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65 * \brief Returns true if the rectangle has no area.
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66 */
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67 #define SDL_RectEmpty(X) (((X)->w <= 0) || ((X)->h <= 0))
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68
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69 /**
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70 * \def SDL_RectEquals()
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71 *
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72 * \brief Returns true if the two rectangles are equal.
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73 */
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74 #define SDL_RectEquals(A, B) (((A)->x == (B)->x) && ((A)->y == (B)->y) && \
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75 ((A)->w == (B)->w) && ((A)->h == (B)->h))
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76
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77 /**
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78 * \fn SDL_bool SDL_HasIntersection(const SDL_Rect * A, const SDL_Rect * B);
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79 *
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80 * \brief Determine whether two rectangles intersect.
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81 *
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82 * \return SDL_TRUE if there is an intersection, SDL_FALSE otherwise.
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83 */
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84 extern DECLSPEC SDL_bool SDLCALL SDL_HasIntersection(const SDL_Rect * A,
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85 const SDL_Rect * B);
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86
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87 /**
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88 * \fn SDL_bool SDL_IntersectRect(const SDL_Rect * A, const SDL_Rect * B, SDL_Rect * result)
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89 *
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90 * \brief Calculate the intersection of two rectangles.
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91 *
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92 * \return SDL_TRUE if there is an intersection, SDL_FALSE otherwise.
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93 */
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94 extern DECLSPEC SDL_bool SDLCALL SDL_IntersectRect(const SDL_Rect * A,
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95 const SDL_Rect * B,
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96 SDL_Rect * result);
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97
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98 /**
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99 * \fn void SDL_UnionRect(const SDL_Rect * A, const SDL_Rect * B, SDL_Rect * result)
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100 *
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101 * \brief Calculate the union of two rectangles
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102 */
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103 extern DECLSPEC void SDLCALL SDL_UnionRect(const SDL_Rect * A,
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104 const SDL_Rect * B,
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105 SDL_Rect * result);
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106
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107 /* Ends C function definitions when using C++ */
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108 #ifdef __cplusplus
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109 /* *INDENT-OFF* */
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110 }
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111 /* *INDENT-ON* */
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112 #endif
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113 #include "close_code.h"
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114
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115 #endif /* _SDL_rect_h */
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116
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117 /* vi: set ts=4 sw=4 expandtab: */