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/*
SDL_rotozoom - rotozoomer
LGPL (c) A. Schiffler
*/
#ifndef _SDL_rotozoom_h
#define _SDL_rotozoom_h
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
extern "C" {
#endif
#include <math.h>
#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;
typedef struct tColorY {
Uint8 y;
} tColorY;
/* ---- 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);
/* 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);
/*
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 */
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