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render: Add floating point versions of various draw APIs.

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This commit is contained in:
Ryan C. Gordon 2018-10-23 01:34:03 -04:00
parent cad0a2f730
commit 8340b0f0e2
6 changed files with 643 additions and 76 deletions
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142
include/SDL_render.h
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@ -835,6 +835,148 @@ extern DECLSPEC int SDLCALL SDL_RenderCopyEx(SDL_Renderer * renderer,
const SDL_Point *center,
const SDL_RendererFlip flip);
/**
* \brief Draw a point on the current rendering target.
*
* \param renderer The renderer which should draw a point.
* \param x The x coordinate of the point.
* \param y The y coordinate of the point.
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderDrawPointF(SDL_Renderer * renderer,
float x, float y);
/**
* \brief Draw multiple points on the current rendering target.
*
* \param renderer The renderer which should draw multiple points.
* \param points The points to draw
* \param count The number of points to draw
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderDrawPointsF(SDL_Renderer * renderer,
const SDL_FPoint * points,
int count);
/**
* \brief Draw a line on the current rendering target.
*
* \param renderer The renderer which should draw a line.
* \param x1 The x coordinate of the start point.
* \param y1 The y coordinate of the start point.
* \param x2 The x coordinate of the end point.
* \param y2 The y coordinate of the end point.
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderDrawLineF(SDL_Renderer * renderer,
float x1, float y1, float x2, float y2);
/**
* \brief Draw a series of connected lines on the current rendering target.
*
* \param renderer The renderer which should draw multiple lines.
* \param points The points along the lines
* \param count The number of points, drawing count-1 lines
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderDrawLinesF(SDL_Renderer * renderer,
const SDL_FPoint * points,
int count);
/**
* \brief Draw a rectangle on the current rendering target.
*
* \param renderer The renderer which should draw a rectangle.
* \param rect A pointer to the destination rectangle, or NULL to outline the entire rendering target.
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderDrawRectF(SDL_Renderer * renderer,
const SDL_FRect * rect);
/**
* \brief Draw some number of rectangles on the current rendering target.
*
* \param renderer The renderer which should draw multiple rectangles.
* \param rects A pointer to an array of destination rectangles.
* \param count The number of rectangles.
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderDrawRectsF(SDL_Renderer * renderer,
const SDL_FRect * rects,
int count);
/**
* \brief Fill a rectangle on the current rendering target with the drawing color.
*
* \param renderer The renderer which should fill a rectangle.
* \param rect A pointer to the destination rectangle, or NULL for the entire
* rendering target.
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderFillRectF(SDL_Renderer * renderer,
const SDL_FRect * rect);
/**
* \brief Fill some number of rectangles on the current rendering target with the drawing color.
*
* \param renderer The renderer which should fill multiple rectangles.
* \param rects A pointer to an array of destination rectangles.
* \param count The number of rectangles.
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderFillRectsF(SDL_Renderer * renderer,
const SDL_FRect * rects,
int count);
/**
* \brief Copy a portion of the texture to the current rendering target.
*
* \param renderer The renderer which should copy parts of a texture.
* \param texture The source texture.
* \param srcrect A pointer to the source rectangle, or NULL for the entire
* texture.
* \param dstrect A pointer to the destination rectangle, or NULL for the
* entire rendering target.
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderCopyF(SDL_Renderer * renderer,
SDL_Texture * texture,
const SDL_Rect * srcrect,
const SDL_FRect * dstrect);
/**
* \brief Copy a portion of the source texture to the current rendering target, rotating it by angle around the given center
*
* \param renderer The renderer which should copy parts of a texture.
* \param texture The source texture.
* \param srcrect A pointer to the source rectangle, or NULL for the entire
* texture.
* \param dstrect A pointer to the destination rectangle, or NULL for the
* entire rendering target.
* \param angle An angle in degrees that indicates the rotation that will be applied to dstrect, rotating it in a clockwise direction
* \param center A pointer to a point indicating the point around which dstrect will be rotated (if NULL, rotation will be done around dstrect.w/2, dstrect.h/2).
* \param flip An SDL_RendererFlip value stating which flipping actions should be performed on the texture
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderCopyExF(SDL_Renderer * renderer,
SDL_Texture * texture,
const SDL_Rect * srcrect,
const SDL_FRect * dstrect,
const double angle,
const SDL_FPoint *center,
const SDL_RendererFlip flip);
/**
* \brief Read pixels from the current rendering target.
*