added absolutely broken cpp code after painfull debugging session
This commit is contained in:
507
vendored/SDL/include/SDL3/SDL_rect.h
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507
vendored/SDL/include/SDL3/SDL_rect.h
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
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||||
arising from the use of this software.
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||||
|
||||
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.
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||||
3. This notice may not be removed or altered from any source distribution.
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||||
*/
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||||
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||||
/**
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* # CategoryRect
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*
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* Some helper functions for managing rectangles and 2D points, in both
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* integer and floating point versions.
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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 <SDL3/SDL_stdinc.h>
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#include <SDL3/SDL_error.h>
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#include <SDL3/SDL_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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extern "C" {
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#endif
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/**
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* The structure that defines a point (using integers).
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*
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* \since This struct is available since SDL 3.2.0.
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*
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* \sa SDL_GetRectEnclosingPoints
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* \sa SDL_PointInRect
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*/
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typedef struct SDL_Point
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{
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int x;
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int y;
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} SDL_Point;
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/**
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* The structure that defines a point (using floating point values).
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*
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* \since This struct is available since SDL 3.2.0.
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*
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* \sa SDL_GetRectEnclosingPointsFloat
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* \sa SDL_PointInRectFloat
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*/
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typedef struct SDL_FPoint
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{
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float x;
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float y;
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} SDL_FPoint;
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/**
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* A rectangle, with the origin at the upper left (using integers).
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*
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* \since This struct is available since SDL 3.2.0.
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*
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* \sa SDL_RectEmpty
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* \sa SDL_RectsEqual
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* \sa SDL_HasRectIntersection
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* \sa SDL_GetRectIntersection
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* \sa SDL_GetRectAndLineIntersection
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* \sa SDL_GetRectUnion
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* \sa SDL_GetRectEnclosingPoints
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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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/**
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* A rectangle, with the origin at the upper left (using floating point
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||||
* values).
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*
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* \since This struct is available since SDL 3.2.0.
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*
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||||
* \sa SDL_RectEmptyFloat
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* \sa SDL_RectsEqualFloat
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* \sa SDL_RectsEqualEpsilon
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* \sa SDL_HasRectIntersectionFloat
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* \sa SDL_GetRectIntersectionFloat
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* \sa SDL_GetRectAndLineIntersectionFloat
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||||
* \sa SDL_GetRectUnionFloat
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* \sa SDL_GetRectEnclosingPointsFloat
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* \sa SDL_PointInRectFloat
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*/
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typedef struct SDL_FRect
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{
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float x;
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float y;
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float w;
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float h;
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} SDL_FRect;
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/**
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||||
* Convert an SDL_Rect to SDL_FRect
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||||
*
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* \param rect a pointer to an SDL_Rect.
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* \param frect a pointer filled in with the floating point representation of
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* `rect`.
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*
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||||
* \threadsafety It is safe to call this function from any thread.
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*
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* \since This function is available since SDL 3.2.0.
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*/
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SDL_FORCE_INLINE void SDL_RectToFRect(const SDL_Rect *rect, SDL_FRect *frect)
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||||
{
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frect->x = (float)rect->x;
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frect->y = (float)rect->y;
|
||||
frect->w = (float)rect->w;
|
||||
frect->h = (float)rect->h;
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||||
}
|
||||
|
||||
/**
|
||||
* Determine whether a point resides inside a rectangle.
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||||
*
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||||
* A point is considered part of a rectangle if both `p` and `r` are not NULL,
|
||||
* and `p`'s x and y coordinates are >= to the rectangle's top left corner,
|
||||
* and < the rectangle's x+w and y+h. So a 1x1 rectangle considers point (0,0)
|
||||
* as "inside" and (0,1) as not.
|
||||
*
|
||||
* Note that this is a forced-inline function in a header, and not a public
|
||||
* API function available in the SDL library (which is to say, the code is
|
||||
* embedded in the calling program and the linker and dynamic loader will not
|
||||
* be able to find this function inside SDL itself).
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||||
*
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||||
* \param p the point to test.
|
||||
* \param r the rectangle to test.
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||||
* \returns true if `p` is contained by `r`, false otherwise.
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||||
*
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||||
* \threadsafety It is safe to call this function from any thread.
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*
|
||||
* \since This function is available since SDL 3.2.0.
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||||
*/
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||||
SDL_FORCE_INLINE bool SDL_PointInRect(const SDL_Point *p, const SDL_Rect *r)
|
||||
{
|
||||
return ( p && r && (p->x >= r->x) && (p->x < (r->x + r->w)) &&
|
||||
(p->y >= r->y) && (p->y < (r->y + r->h)) ) ? true : false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Determine whether a rectangle has no area.
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||||
*
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||||
* A rectangle is considered "empty" for this function if `r` is NULL, or if
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||||
* `r`'s width and/or height are <= 0.
|
||||
*
|
||||
* Note that this is a forced-inline function in a header, and not a public
|
||||
* API function available in the SDL library (which is to say, the code is
|
||||
* embedded in the calling program and the linker and dynamic loader will not
|
||||
* be able to find this function inside SDL itself).
|
||||
*
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||||
* \param r the rectangle to test.
|
||||
* \returns true if the rectangle is "empty", false otherwise.
|
||||
*
|
||||
* \threadsafety It is safe to call this function from any thread.
|
||||
*
|
||||
* \since This function is available since SDL 3.2.0.
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||||
*/
|
||||
SDL_FORCE_INLINE bool SDL_RectEmpty(const SDL_Rect *r)
|
||||
{
|
||||
return ((!r) || (r->w <= 0) || (r->h <= 0)) ? true : false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Determine whether two rectangles are equal.
|
||||
*
|
||||
* Rectangles are considered equal if both are not NULL and each of their x,
|
||||
* y, width and height match.
|
||||
*
|
||||
* Note that this is a forced-inline function in a header, and not a public
|
||||
* API function available in the SDL library (which is to say, the code is
|
||||
* embedded in the calling program and the linker and dynamic loader will not
|
||||
* be able to find this function inside SDL itself).
|
||||
*
|
||||
* \param a the first rectangle to test.
|
||||
* \param b the second rectangle to test.
|
||||
* \returns true if the rectangles are equal, false otherwise.
|
||||
*
|
||||
* \threadsafety It is safe to call this function from any thread.
|
||||
*
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||||
* \since This function is available since SDL 3.2.0.
|
||||
*/
|
||||
SDL_FORCE_INLINE bool SDL_RectsEqual(const SDL_Rect *a, const SDL_Rect *b)
|
||||
{
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||||
return (a && b && (a->x == b->x) && (a->y == b->y) &&
|
||||
(a->w == b->w) && (a->h == b->h)) ? true : false;
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||||
}
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||||
|
||||
/**
|
||||
* Determine whether two rectangles intersect.
|
||||
*
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||||
* If either pointer is NULL the function will return false.
|
||||
*
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||||
* \param A an SDL_Rect structure representing the first rectangle.
|
||||
* \param B an SDL_Rect structure representing the second rectangle.
|
||||
* \returns true if there is an intersection, false otherwise.
|
||||
*
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||||
* \threadsafety It is safe to call this function from any thread.
|
||||
*
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||||
* \since This function is available since SDL 3.2.0.
|
||||
*
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||||
* \sa SDL_GetRectIntersection
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||||
*/
|
||||
extern SDL_DECLSPEC bool SDLCALL SDL_HasRectIntersection(const SDL_Rect *A, const SDL_Rect *B);
|
||||
|
||||
/**
|
||||
* Calculate the intersection of two rectangles.
|
||||
*
|
||||
* If `result` is NULL then this function will return false.
|
||||
*
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||||
* \param A an SDL_Rect structure representing the first rectangle.
|
||||
* \param B an SDL_Rect structure representing the second rectangle.
|
||||
* \param result an SDL_Rect structure filled in with the intersection of
|
||||
* rectangles `A` and `B`.
|
||||
* \returns true if there is an intersection, false otherwise.
|
||||
*
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||||
* \since This function is available since SDL 3.2.0.
|
||||
*
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||||
* \sa SDL_HasRectIntersection
|
||||
*/
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||||
extern SDL_DECLSPEC bool SDLCALL SDL_GetRectIntersection(const SDL_Rect *A, const SDL_Rect *B, SDL_Rect *result);
|
||||
|
||||
/**
|
||||
* Calculate the union of two rectangles.
|
||||
*
|
||||
* \param A an SDL_Rect structure representing the first rectangle.
|
||||
* \param B an SDL_Rect structure representing the second rectangle.
|
||||
* \param result an SDL_Rect structure filled in with the union of rectangles
|
||||
* `A` and `B`.
|
||||
* \returns true on success or false on failure; call SDL_GetError() for more
|
||||
* information.
|
||||
*
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||||
* \since This function is available since SDL 3.2.0.
|
||||
*/
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||||
extern SDL_DECLSPEC bool SDLCALL SDL_GetRectUnion(const SDL_Rect *A, const SDL_Rect *B, SDL_Rect *result);
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||||
|
||||
/**
|
||||
* Calculate a minimal rectangle enclosing a set of points.
|
||||
*
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||||
* If `clip` is not NULL then only points inside of the clipping rectangle are
|
||||
* considered.
|
||||
*
|
||||
* \param points an array of SDL_Point structures representing points to be
|
||||
* enclosed.
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||||
* \param count the number of structures in the `points` array.
|
||||
* \param clip an SDL_Rect used for clipping or NULL to enclose all points.
|
||||
* \param result an SDL_Rect structure filled in with the minimal enclosing
|
||||
* rectangle.
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||||
* \returns true if any points were enclosed or false if all the points were
|
||||
* outside of the clipping rectangle.
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||||
*
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||||
* \since This function is available since SDL 3.2.0.
|
||||
*/
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||||
extern SDL_DECLSPEC bool SDLCALL SDL_GetRectEnclosingPoints(const SDL_Point *points, int count, const SDL_Rect *clip, SDL_Rect *result);
|
||||
|
||||
/**
|
||||
* Calculate the intersection of a rectangle and line segment.
|
||||
*
|
||||
* This function is used to clip a line segment to a rectangle. A line segment
|
||||
* contained entirely within the rectangle or that does not intersect will
|
||||
* remain unchanged. A line segment that crosses the rectangle at either or
|
||||
* both ends will be clipped to the boundary of the rectangle and the new
|
||||
* coordinates saved in `X1`, `Y1`, `X2`, and/or `Y2` as necessary.
|
||||
*
|
||||
* \param rect an SDL_Rect structure representing the rectangle to intersect.
|
||||
* \param X1 a pointer to the starting X-coordinate of the line.
|
||||
* \param Y1 a pointer to the starting Y-coordinate of the line.
|
||||
* \param X2 a pointer to the ending X-coordinate of the line.
|
||||
* \param Y2 a pointer to the ending Y-coordinate of the line.
|
||||
* \returns true if there is an intersection, false otherwise.
|
||||
*
|
||||
* \since This function is available since SDL 3.2.0.
|
||||
*/
|
||||
extern SDL_DECLSPEC bool SDLCALL SDL_GetRectAndLineIntersection(const SDL_Rect *rect, int *X1, int *Y1, int *X2, int *Y2);
|
||||
|
||||
|
||||
/* SDL_FRect versions... */
|
||||
|
||||
/**
|
||||
* Determine whether a point resides inside a floating point rectangle.
|
||||
*
|
||||
* A point is considered part of a rectangle if both `p` and `r` are not NULL,
|
||||
* and `p`'s x and y coordinates are >= to the rectangle's top left corner,
|
||||
* and <= the rectangle's x+w and y+h. So a 1x1 rectangle considers point
|
||||
* (0,0) and (0,1) as "inside" and (0,2) as not.
|
||||
*
|
||||
* Note that this is a forced-inline function in a header, and not a public
|
||||
* API function available in the SDL library (which is to say, the code is
|
||||
* embedded in the calling program and the linker and dynamic loader will not
|
||||
* be able to find this function inside SDL itself).
|
||||
*
|
||||
* \param p the point to test.
|
||||
* \param r the rectangle to test.
|
||||
* \returns true if `p` is contained by `r`, false otherwise.
|
||||
*
|
||||
* \threadsafety It is safe to call this function from any thread.
|
||||
*
|
||||
* \since This function is available since SDL 3.2.0.
|
||||
*/
|
||||
SDL_FORCE_INLINE bool SDL_PointInRectFloat(const SDL_FPoint *p, const SDL_FRect *r)
|
||||
{
|
||||
return ( p && r && (p->x >= r->x) && (p->x <= (r->x + r->w)) &&
|
||||
(p->y >= r->y) && (p->y <= (r->y + r->h)) ) ? true : false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Determine whether a floating point rectangle can contain any point.
|
||||
*
|
||||
* A rectangle is considered "empty" for this function if `r` is NULL, or if
|
||||
* `r`'s width and/or height are < 0.0f.
|
||||
*
|
||||
* Note that this is a forced-inline function in a header, and not a public
|
||||
* API function available in the SDL library (which is to say, the code is
|
||||
* embedded in the calling program and the linker and dynamic loader will not
|
||||
* be able to find this function inside SDL itself).
|
||||
*
|
||||
* \param r the rectangle to test.
|
||||
* \returns true if the rectangle is "empty", false otherwise.
|
||||
*
|
||||
* \threadsafety It is safe to call this function from any thread.
|
||||
*
|
||||
* \since This function is available since SDL 3.2.0.
|
||||
*/
|
||||
SDL_FORCE_INLINE bool SDL_RectEmptyFloat(const SDL_FRect *r)
|
||||
{
|
||||
return ((!r) || (r->w < 0.0f) || (r->h < 0.0f)) ? true : false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Determine whether two floating point rectangles are equal, within some
|
||||
* given epsilon.
|
||||
*
|
||||
* Rectangles are considered equal if both are not NULL and each of their x,
|
||||
* y, width and height are within `epsilon` of each other. If you don't know
|
||||
* what value to use for `epsilon`, you should call the SDL_RectsEqualFloat
|
||||
* function instead.
|
||||
*
|
||||
* Note that this is a forced-inline function in a header, and not a public
|
||||
* API function available in the SDL library (which is to say, the code is
|
||||
* embedded in the calling program and the linker and dynamic loader will not
|
||||
* be able to find this function inside SDL itself).
|
||||
*
|
||||
* \param a the first rectangle to test.
|
||||
* \param b the second rectangle to test.
|
||||
* \param epsilon the epsilon value for comparison.
|
||||
* \returns true if the rectangles are equal, false otherwise.
|
||||
*
|
||||
* \threadsafety It is safe to call this function from any thread.
|
||||
*
|
||||
* \since This function is available since SDL 3.2.0.
|
||||
*
|
||||
* \sa SDL_RectsEqualFloat
|
||||
*/
|
||||
SDL_FORCE_INLINE bool SDL_RectsEqualEpsilon(const SDL_FRect *a, const SDL_FRect *b, float epsilon)
|
||||
{
|
||||
return (a && b && ((a == b) ||
|
||||
((SDL_fabsf(a->x - b->x) <= epsilon) &&
|
||||
(SDL_fabsf(a->y - b->y) <= epsilon) &&
|
||||
(SDL_fabsf(a->w - b->w) <= epsilon) &&
|
||||
(SDL_fabsf(a->h - b->h) <= epsilon))))
|
||||
? true : false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Determine whether two floating point rectangles are equal, within a default
|
||||
* epsilon.
|
||||
*
|
||||
* Rectangles are considered equal if both are not NULL and each of their x,
|
||||
* y, width and height are within SDL_FLT_EPSILON of each other. This is often
|
||||
* a reasonable way to compare two floating point rectangles and deal with the
|
||||
* slight precision variations in floating point calculations that tend to pop
|
||||
* up.
|
||||
*
|
||||
* Note that this is a forced-inline function in a header, and not a public
|
||||
* API function available in the SDL library (which is to say, the code is
|
||||
* embedded in the calling program and the linker and dynamic loader will not
|
||||
* be able to find this function inside SDL itself).
|
||||
*
|
||||
* \param a the first rectangle to test.
|
||||
* \param b the second rectangle to test.
|
||||
* \returns true if the rectangles are equal, false otherwise.
|
||||
*
|
||||
* \threadsafety It is safe to call this function from any thread.
|
||||
*
|
||||
* \since This function is available since SDL 3.2.0.
|
||||
*
|
||||
* \sa SDL_RectsEqualEpsilon
|
||||
*/
|
||||
SDL_FORCE_INLINE bool SDL_RectsEqualFloat(const SDL_FRect *a, const SDL_FRect *b)
|
||||
{
|
||||
return SDL_RectsEqualEpsilon(a, b, SDL_FLT_EPSILON);
|
||||
}
|
||||
|
||||
/**
|
||||
* Determine whether two rectangles intersect with float precision.
|
||||
*
|
||||
* If either pointer is NULL the function will return false.
|
||||
*
|
||||
* \param A an SDL_FRect structure representing the first rectangle.
|
||||
* \param B an SDL_FRect structure representing the second rectangle.
|
||||
* \returns true if there is an intersection, false otherwise.
|
||||
*
|
||||
* \since This function is available since SDL 3.2.0.
|
||||
*
|
||||
* \sa SDL_GetRectIntersection
|
||||
*/
|
||||
extern SDL_DECLSPEC bool SDLCALL SDL_HasRectIntersectionFloat(const SDL_FRect *A, const SDL_FRect *B);
|
||||
|
||||
/**
|
||||
* Calculate the intersection of two rectangles with float precision.
|
||||
*
|
||||
* If `result` is NULL then this function will return false.
|
||||
*
|
||||
* \param A an SDL_FRect structure representing the first rectangle.
|
||||
* \param B an SDL_FRect structure representing the second rectangle.
|
||||
* \param result an SDL_FRect structure filled in with the intersection of
|
||||
* rectangles `A` and `B`.
|
||||
* \returns true if there is an intersection, false otherwise.
|
||||
*
|
||||
* \since This function is available since SDL 3.2.0.
|
||||
*
|
||||
* \sa SDL_HasRectIntersectionFloat
|
||||
*/
|
||||
extern SDL_DECLSPEC bool SDLCALL SDL_GetRectIntersectionFloat(const SDL_FRect *A, const SDL_FRect *B, SDL_FRect *result);
|
||||
|
||||
/**
|
||||
* Calculate the union of two rectangles with float precision.
|
||||
*
|
||||
* \param A an SDL_FRect structure representing the first rectangle.
|
||||
* \param B an SDL_FRect structure representing the second rectangle.
|
||||
* \param result an SDL_FRect structure filled in with the union of rectangles
|
||||
* `A` and `B`.
|
||||
* \returns true on success or false on failure; call SDL_GetError() for more
|
||||
* information.
|
||||
*
|
||||
* \since This function is available since SDL 3.2.0.
|
||||
*/
|
||||
extern SDL_DECLSPEC bool SDLCALL SDL_GetRectUnionFloat(const SDL_FRect *A, const SDL_FRect *B, SDL_FRect *result);
|
||||
|
||||
/**
|
||||
* Calculate a minimal rectangle enclosing a set of points with float
|
||||
* precision.
|
||||
*
|
||||
* If `clip` is not NULL then only points inside of the clipping rectangle are
|
||||
* considered.
|
||||
*
|
||||
* \param points an array of SDL_FPoint structures representing points to be
|
||||
* enclosed.
|
||||
* \param count the number of structures in the `points` array.
|
||||
* \param clip an SDL_FRect used for clipping or NULL to enclose all points.
|
||||
* \param result an SDL_FRect structure filled in with the minimal enclosing
|
||||
* rectangle.
|
||||
* \returns true if any points were enclosed or false if all the points were
|
||||
* outside of the clipping rectangle.
|
||||
*
|
||||
* \since This function is available since SDL 3.2.0.
|
||||
*/
|
||||
extern SDL_DECLSPEC bool SDLCALL SDL_GetRectEnclosingPointsFloat(const SDL_FPoint *points, int count, const SDL_FRect *clip, SDL_FRect *result);
|
||||
|
||||
/**
|
||||
* Calculate the intersection of a rectangle and line segment with float
|
||||
* precision.
|
||||
*
|
||||
* This function is used to clip a line segment to a rectangle. A line segment
|
||||
* contained entirely within the rectangle or that does not intersect will
|
||||
* remain unchanged. A line segment that crosses the rectangle at either or
|
||||
* both ends will be clipped to the boundary of the rectangle and the new
|
||||
* coordinates saved in `X1`, `Y1`, `X2`, and/or `Y2` as necessary.
|
||||
*
|
||||
* \param rect an SDL_FRect structure representing the rectangle to intersect.
|
||||
* \param X1 a pointer to the starting X-coordinate of the line.
|
||||
* \param Y1 a pointer to the starting Y-coordinate of the line.
|
||||
* \param X2 a pointer to the ending X-coordinate of the line.
|
||||
* \param Y2 a pointer to the ending Y-coordinate of the line.
|
||||
* \returns true if there is an intersection, false otherwise.
|
||||
*
|
||||
* \since This function is available since SDL 3.2.0.
|
||||
*/
|
||||
extern SDL_DECLSPEC bool SDLCALL SDL_GetRectAndLineIntersectionFloat(const SDL_FRect *rect, float *X1, float *Y1, float *X2, float *Y2);
|
||||
|
||||
/* Ends C function definitions when using C++ */
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
#include <SDL3/SDL_close_code.h>
|
||||
|
||||
#endif /* SDL_rect_h_ */
|
||||
Reference in New Issue
Block a user