#include <stdint.h>
#include "SDL.h"
#include "point.h"

Functions
void	raster_rect (SDL_Surface *s, int16_t x, int16_t y, int16_t w, int16_t h, uint32_t col)

void	raster_line (SDL_Surface *s, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint32_t col)

void	raster_circle (SDL_Surface *s, int16_t x, int16_t y, int16_t r, uint32_t col)

void	raster_polygon (SDL_Surface s, int16_t n, int16_t vx, int16_t *vy, uint32_t col)

void	raster_polygon_with_holes (SDL_Surface s, struct point p, int count, int hole_count, int ccount, struct point *holes, uint32_t col)
	render filled polygon with holes by raycasting along the y axis More...

void	raster_aaline (SDL_Surface *s, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint32_t col)

void	raster_aacircle (SDL_Surface *s, int16_t x, int16_t y, int16_t r, uint32_t col)

void	raster_aapolygon (SDL_Surface s, int16_t n, int16_t vx, int16_t *vy, uint32_t col)

void	raster_aapolygon_with_holes (SDL_Surface s, struct point p, int count, int hole_count, int ccount, struct point *holes, uint32_t col)
	render filled polygon with holes by raycasting along the y axis More...

Function Documentation

◆ raster_aacircle()

void raster_aacircle	(	SDL_Surface *	s,
		int16_t	x,
		int16_t	y,
		int16_t	r,
		uint32_t	col
	)

References raster_AAFilledEllipse().

Referenced by draw_circle().

◆ raster_aaline()

void raster_aaline	(	SDL_Surface *	s,
		int16_t	x1,
		int16_t	y1,
		int16_t	x2,
		int16_t	y2,
		uint32_t	col
	)

References raster_aalineColorInt().

Referenced by draw_lines().

◆ raster_aapolygon()

void raster_aapolygon	(	SDL_Surface *	s,
		int16_t	n,
		int16_t *	vx,
		int16_t *	vy,
		uint32_t	col
	)

References gfxPrimitivesCompareInt(), gfxPrimitivesPolyAllocatedGlobal, gfxPrimitivesPolyIntsGlobal, p, raster_aalineColorInt(), and raster_hline().

◆ raster_aapolygon_with_holes()

void raster_aapolygon_with_holes	(	SDL_Surface *	s,
		struct point *	p,
		int	count,
		int	hole_count,
		int *	ccount,
		struct point **	holes,
		uint32_t	col
	)

render filled polygon with holes by raycasting along the y axis

This function renders a filled polygon that can have holes by SDL primitive graphic functions by raycasting along the y axis. This works basically the same as for complex polygons. Only difference is the "holes" are individual polygon loops not connected to the outer loop. FIXME: This draws well as long as the "hole" does not intersect with the outer polygon. However such multipolygons are seen a mapping error in OSM and therefore the rendering err may even help in detecting them. But this could be fixed by never starting a line on a vertex that came from a hole intersection.

Parameters

s	SDL surface to draw on
p	Array of points containing the outer polygon
count	Number of points in outer polygon
hole_count	Number of hole polygons
ccount	number of points per hole polygon @oaram holes array of point arrays. One for each "hole"
col	Color to draw this.

References p, raster_aalineColorInt(), raster_polygon_with_holes(), point::x, and point::y.

Referenced by draw_polygon_with_holes().

◆ raster_circle()

void raster_circle	(	SDL_Surface *	s,
		int16_t	x,
		int16_t	y,
		int16_t	r,
		uint32_t	col
	)

References raster_hline(), and raster_PutPixel().

Referenced by draw_circle().

◆ raster_line()

void raster_line	(	SDL_Surface *	s,
		int16_t	x1,
		int16_t	y1,
		int16_t	x2,
		int16_t	y2,
		uint32_t	col
	)

References clipLine(), raster_hline(), raster_PutPixel(), and raster_vline().

Referenced by draw_lines(), and raster_aalineColorInt().

◆ raster_polygon()

void raster_polygon	(	SDL_Surface *	s,
		int16_t	n,
		int16_t *	vx,
		int16_t *	vy,
		uint32_t	col
	)

References raster_filledPolygonColorMT().

◆ raster_polygon_with_holes()

void raster_polygon_with_holes	(	SDL_Surface *	s,
		struct point *	p,
		int	count,
		int	hole_count,
		int *	ccount,
		struct point **	holes,
		uint32_t	col
	)

render filled polygon with holes by raycasting along the y axis

This function renders a filled polygon that can have holes by SDL primitive graphic functions by raycasting along the y axis. This works basically the same as for complex polygons. Only difference is the "holes" are individual polygon loops not connected to the outer loop. FIXME: This draws well as long as the "hole" does not intersect with the outer polygon. However such multipolygons are seen a mapping error in OSM and therefore the rendering err may even help in detecting them. But this could be fixed by never starting a line on a vertex that came from a hole intersection.

Parameters

s	SDL surface to draw on
p	Array of points containing the outer polygon
count	Number of points in outer polygon
hole_count	Number of hole polygons
ccount	number of points per hole polygon @oaram holes array of point arrays. One for each "hole"
col	Color to draw this.

References gfxPrimitivesCompareInt(), p, raster_hline(), point::x, and point::y.

Referenced by draw_polygon_with_holes(), and raster_aapolygon_with_holes().

◆ raster_rect()

void raster_rect	(	SDL_Surface *	s,
		int16_t	x,
		int16_t	y,
		int16_t	w,
		int16_t	h,
		uint32_t	col
	)

References raster_rect_inline.

Referenced by draw_rectangle().

Functions