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-
- /*
-
- SDL_rotozoom - rotozoomer
-
- LGPL (c) A. Schiffler
-
- */
-
- #ifndef _SDL_rotozoom_h
- #define _SDL_rotozoom_h
-
- #include <math.h>
-
- /* Set up for C function definitions, even when using C++ */
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- #ifndef M_PI
- #define M_PI 3.141592654
- #endif
-
- #include "SDL.h"
-
- /* ---- Defines */
-
- #define SMOOTHING_OFF 0
- #define SMOOTHING_ON 1
-
- /* ---- Structures */
-
- typedef struct tColorRGBA {
- Uint8 r;
- Uint8 g;
- Uint8 b;
- Uint8 a;
- } tColorRGBA;
-
- #ifdef __riscos__
- /* A.Buckley 23/9/06 - redefined tColorY as definition of it as
- a structure makes it 32 bits long*/
- typedef Uint8 tColorY;
- #else
- typedef struct tColorY {
- Uint8 y;
- } tColorY;
- #endif
-
- /* ---- Prototypes */
-
- #ifdef WIN32
- #ifdef BUILD_DLL
- #define DLLINTERFACE __declspec(dllexport)
- #else
- #define DLLINTERFACE __declspec(dllimport)
- #endif
- #else
- #define DLLINTERFACE
- #endif
-
- /*
-
- rotozoomSurface()
-
- Rotates and zoomes a 32bit or 8bit 'src' surface to newly created 'dst' surface.
- 'angle' is the rotation in degrees. 'zoom' a scaling factor. If 'smooth' is 1
- then the destination 32bit surface is anti-aliased. If the surface is not 8bit
- or 32bit RGBA/ABGR it will be converted into a 32bit RGBA format on the fly.
-
- */
-
- DLLINTERFACE SDL_Surface *rotozoomSurface(SDL_Surface * src, double angle, double zoom, int smooth);
-
- DLLINTERFACE SDL_Surface *rotozoomSurfaceXY
- (SDL_Surface * src, double angle, double zoomx, double zoomy, int smooth);
-
- /* Returns the size of the target surface for a rotozoomSurface() call */
-
- DLLINTERFACE void rotozoomSurfaceSize(int width, int height, double angle, double zoom, int *dstwidth,
- int *dstheight);
-
- DLLINTERFACE void rotozoomSurfaceSizeXY
- (int width, int height, double angle, double zoomx, double zoomy,
- int *dstwidth, int *dstheight);
-
- /*
-
- zoomSurface()
-
- Zoomes a 32bit or 8bit 'src' surface to newly created 'dst' surface.
- 'zoomx' and 'zoomy' are scaling factors for width and height. If 'smooth' is 1
- then the destination 32bit surface is anti-aliased. If the surface is not 8bit
- or 32bit RGBA/ABGR it will be converted into a 32bit RGBA format on the fly.
-
- */
-
- DLLINTERFACE SDL_Surface *zoomSurface(SDL_Surface * src, double zoomx, double zoomy, int smooth);
-
- /* Returns the size of the target surface for a zoomSurface() call */
-
- DLLINTERFACE void zoomSurfaceSize(int width, int height, double zoomx, double zoomy, int *dstwidth, int *dstheight);
-
-
- /* Ends C function definitions when using C++ */
- #ifdef __cplusplus
- }
- #endif
-
- #endif /* _SDL_rotozoom_h */
-