Flip constants for SDL_RenderCopyEx
Defined in [SDL_render.h](https://github.com/libsdl-org/SDL/blob/SDL2/include/SDL_render.h), but apps should _only_ `#include "SDL.h"`!
typedef enum SDL_RendererFlip
{0x00000000, /**< Do not flip */
SDL_FLIP_NONE = 0x00000001, /**< flip horizontally */
SDL_FLIP_HORIZONTAL = 0x00000002 /**< flip vertically */
SDL_FLIP_VERTICAL = } SDL_RendererFlip;
extern SDL_Renderer *renderer;
extern SDL_Texture *texture;
extern SDL_Rect srcrect;
extern SDL_Rect dstrect;
extern int angle;
extern SDL_Point center;
/* casts may be necessary for some compiler settings or languages (e.g. C++) */
SDL_RendererFlip flip = SDL_FLIP_HORIZONTAL | SDL_FLIP_VERTICAL;
SDL_RenderCopyEx(renderer, texture, &srcrect, &dstrect, angle, ¢er, flip);
CategoryAPI, CategoryAPIEnum, CategoryEnum, CategoryRender