I:/Sources/sdlgfx/SDL_gfxPrimitives.h File Reference

#include <math.h>
#include "SDL.h"

Go to the source code of this file.

Defines
#define	M_PI   3.1415926535897932384626433832795
#define	SDL_GFXPRIMITIVES_MAJOR   2
#define	SDL_GFXPRIMITIVES_MINOR   0
#define	SDL_GFXPRIMITIVES_MICRO   25
#define	SDL_GFXPRIMITIVES_SCOPE   extern
Functions
SDL_GFXPRIMITIVES_SCOPE int	pixelColor (SDL_Surface *dst, Sint16 x, Sint16 y, Uint32 color)
	Pixel draw with blending enabled if a<255.
SDL_GFXPRIMITIVES_SCOPE int	pixelRGBA (SDL_Surface *dst, Sint16 x, Sint16 y, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Pixel draw with blending enabled if a<255.
SDL_GFXPRIMITIVES_SCOPE int	hlineColor (SDL_Surface *dst, Sint16 x1, Sint16 x2, Sint16 y, Uint32 color)
	Draw horizontal line with blending.
SDL_GFXPRIMITIVES_SCOPE int	hlineRGBA (SDL_Surface *dst, Sint16 x1, Sint16 x2, Sint16 y, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw horizontal line with blending.
SDL_GFXPRIMITIVES_SCOPE int	vlineColor (SDL_Surface *dst, Sint16 x, Sint16 y1, Sint16 y2, Uint32 color)
	Draw vertical line with blending.
SDL_GFXPRIMITIVES_SCOPE int	vlineRGBA (SDL_Surface *dst, Sint16 x, Sint16 y1, Sint16 y2, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw vertical line with blending.
SDL_GFXPRIMITIVES_SCOPE int	rectangleColor (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Uint32 color)
	Draw rectangle with blending.
SDL_GFXPRIMITIVES_SCOPE int	rectangleRGBA (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw rectangle with blending.
SDL_GFXPRIMITIVES_SCOPE int	roundedRectangleColor (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Sint16 rad, Uint32 color)
	Draw rounded-corner rectangle with blending.
SDL_GFXPRIMITIVES_SCOPE int	roundedRectangleRGBA (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Sint16 rad, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw rounded-corner rectangle with blending.
SDL_GFXPRIMITIVES_SCOPE int	boxColor (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Uint32 color)
	Draw box (filled rectangle) with blending.
SDL_GFXPRIMITIVES_SCOPE int	boxRGBA (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw box (filled rectangle) with blending.
SDL_GFXPRIMITIVES_SCOPE int	roundedBoxColor (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Sint16 rad, Uint32 color)
	Draw rounded-corner box (filled rectangle) with blending.
SDL_GFXPRIMITIVES_SCOPE int	roundedBoxRGBA (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Sint16 rad, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw rounded-corner box (filled rectangle) with blending.
SDL_GFXPRIMITIVES_SCOPE int	lineColor (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Uint32 color)
	Draw line with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	lineRGBA (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw line with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	aalineColor (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Uint32 color)
	Ddraw anti-aliased line with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	aalineRGBA (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw anti-aliased line with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	thickLineColor (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Uint8 width, Uint32 color)
	Draw a thick line with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	thickLineRGBA (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Uint8 width, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw a thick line with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	circleColor (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 rad, Uint32 color)
	Draw circle with blending.
SDL_GFXPRIMITIVES_SCOPE int	circleRGBA (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 rad, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw circle with blending.
SDL_GFXPRIMITIVES_SCOPE int	arcColor (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 rad, Sint16 start, Sint16 end, Uint32 color)
	Arc with blending.
SDL_GFXPRIMITIVES_SCOPE int	arcRGBA (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 rad, Sint16 start, Sint16 end, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Arc with blending.
SDL_GFXPRIMITIVES_SCOPE int	aacircleColor (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 rad, Uint32 color)
	Draw anti-aliased circle with blending.
SDL_GFXPRIMITIVES_SCOPE int	aacircleRGBA (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 rad, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw anti-aliased circle with blending.
SDL_GFXPRIMITIVES_SCOPE int	filledCircleColor (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 r, Uint32 color)
	Draw filled circle with blending.
SDL_GFXPRIMITIVES_SCOPE int	filledCircleRGBA (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 rad, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw filled circle with blending.
SDL_GFXPRIMITIVES_SCOPE int	ellipseColor (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 rx, Sint16 ry, Uint32 color)
	Draw ellipse with blending.
SDL_GFXPRIMITIVES_SCOPE int	ellipseRGBA (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 rx, Sint16 ry, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw ellipse with blending.
SDL_GFXPRIMITIVES_SCOPE int	aaellipseColor (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 rx, Sint16 ry, Uint32 color)
	Draw anti-aliased ellipse with blending.
SDL_GFXPRIMITIVES_SCOPE int	aaellipseRGBA (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 rx, Sint16 ry, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw anti-aliased ellipse with blending.
SDL_GFXPRIMITIVES_SCOPE int	filledEllipseColor (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 rx, Sint16 ry, Uint32 color)
	Draw filled ellipse with blending.
SDL_GFXPRIMITIVES_SCOPE int	filledEllipseRGBA (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 rx, Sint16 ry, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw filled ellipse with blending.
SDL_GFXPRIMITIVES_SCOPE int	pieColor (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 rad, Sint16 start, Sint16 end, Uint32 color)
	Draw pie (outline) with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	pieRGBA (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 rad, Sint16 start, Sint16 end, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw pie (outline) with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	filledPieColor (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 rad, Sint16 start, Sint16 end, Uint32 color)
	Draw filled pie with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	filledPieRGBA (SDL_Surface *dst, Sint16 x, Sint16 y, Sint16 rad, Sint16 start, Sint16 end, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw filled pie with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	trigonColor (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Sint16 x3, Sint16 y3, Uint32 color)
	Draw trigon (triangle outline) with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	trigonRGBA (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Sint16 x3, Sint16 y3, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw trigon (triangle outline) with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	aatrigonColor (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Sint16 x3, Sint16 y3, Uint32 color)
	Draw anti-aliased trigon (triangle outline) with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	aatrigonRGBA (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Sint16 x3, Sint16 y3, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw anti-aliased trigon (triangle outline) with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	filledTrigonColor (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Sint16 x3, Sint16 y3, Uint32 color)
	Draw filled trigon (triangle) with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	filledTrigonRGBA (SDL_Surface *dst, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Sint16 x3, Sint16 y3, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw filled trigon (triangle) with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	polygonColor (SDL_Surface *dst, const Sint16 *vx, const Sint16 *vy, int n, Uint32 color)
	Draw polygon with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	polygonRGBA (SDL_Surface *dst, const Sint16 *vx, const Sint16 *vy, int n, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw polygon with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	aapolygonColor (SDL_Surface *dst, const Sint16 *vx, const Sint16 *vy, int n, Uint32 color)
	Draw anti-aliased polygon with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	aapolygonRGBA (SDL_Surface *dst, const Sint16 *vx, const Sint16 *vy, int n, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw anti-aliased polygon with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	filledPolygonColor (SDL_Surface *dst, const Sint16 *vx, const Sint16 *vy, int n, Uint32 color)
	Draw filled polygon with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	filledPolygonRGBA (SDL_Surface *dst, const Sint16 *vx, const Sint16 *vy, int n, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw filled polygon with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	texturedPolygon (SDL_Surface *dst, const Sint16 *vx, const Sint16 *vy, int n, SDL_Surface *texture, int texture_dx, int texture_dy)
	Draws a polygon filled with the given texture.
SDL_GFXPRIMITIVES_SCOPE int	filledPolygonColorMT (SDL_Surface *dst, const Sint16 *vx, const Sint16 *vy, int n, Uint32 color, int **polyInts, int *polyAllocated)
	Draw filled polygon with alpha blending (multi-threaded capable).
SDL_GFXPRIMITIVES_SCOPE int	filledPolygonRGBAMT (SDL_Surface *dst, const Sint16 *vx, const Sint16 *vy, int n, Uint8 r, Uint8 g, Uint8 b, Uint8 a, int **polyInts, int *polyAllocated)
	Draw filled polygon with alpha blending (multi-threaded capable).
SDL_GFXPRIMITIVES_SCOPE int	texturedPolygonMT (SDL_Surface *dst, const Sint16 *vx, const Sint16 *vy, int n, SDL_Surface *texture, int texture_dx, int texture_dy, int **polyInts, int *polyAllocated)
	Draws a polygon filled with the given texture (Multi-Threading Capable).
SDL_GFXPRIMITIVES_SCOPE int	bezierColor (SDL_Surface *dst, const Sint16 *vx, const Sint16 *vy, int n, int s, Uint32 color)
	Draw a bezier curve with alpha blending.
SDL_GFXPRIMITIVES_SCOPE int	bezierRGBA (SDL_Surface *dst, const Sint16 *vx, const Sint16 *vy, int n, int s, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw a bezier curve with alpha blending.
SDL_GFXPRIMITIVES_SCOPE void	gfxPrimitivesSetFont (const void *fontdata, Uint32 cw, Uint32 ch)
	Sets or resets the current global font data.
SDL_GFXPRIMITIVES_SCOPE void	gfxPrimitivesSetFontRotation (Uint32 rotation)
	Sets current global font character rotation steps.
SDL_GFXPRIMITIVES_SCOPE int	characterColor (SDL_Surface *dst, Sint16 x, Sint16 y, char c, Uint32 color)
	Draw a character of the currently set font.
SDL_GFXPRIMITIVES_SCOPE int	characterRGBA (SDL_Surface *dst, Sint16 x, Sint16 y, char c, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw a character of the currently set font.
SDL_GFXPRIMITIVES_SCOPE int	stringColor (SDL_Surface *dst, Sint16 x, Sint16 y, const char *s, Uint32 color)
	Draw a string in the currently set font.
SDL_GFXPRIMITIVES_SCOPE int	stringRGBA (SDL_Surface *dst, Sint16 x, Sint16 y, const char *s, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
	Draw a string in the currently set font.

---

Define Documentation

#define M_PI   3.1415926535897932384626433832795

Definition at line 35 of file SDL_gfxPrimitives.h.

#define SDL_GFXPRIMITIVES_MAJOR   2

Definition at line 47 of file SDL_gfxPrimitives.h.

#define SDL_GFXPRIMITIVES_MICRO   25

Definition at line 49 of file SDL_gfxPrimitives.h.

#define SDL_GFXPRIMITIVES_MINOR   0

Definition at line 48 of file SDL_gfxPrimitives.h.

#define SDL_GFXPRIMITIVES_SCOPE   extern

Definition at line 64 of file SDL_gfxPrimitives.h.

---

Function Documentation

SDL_GFXPRIMITIVES_SCOPE int aacircleColor	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rad,
		Uint32	color
	)

Draw anti-aliased circle with blending.

Note: The AA-circle routine is based on AA-ellipse with identical radii.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the aa-circle.
y	Y coordinate of the center of the aa-circle.
rad	Radius in pixels of the aa-circle.
color	The color value of the aa-circle to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 3512 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int aacircleRGBA	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rad,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw anti-aliased circle with blending.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the aa-circle.
y	Y coordinate of the center of the aa-circle.
rad	Radius in pixels of the aa-circle.
r	The red value of the aa-circle to draw.
g	The green value of the aa-circle to draw.
b	The blue value of the aa-circle to draw.
a	The alpha value of the aa-circle to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 3531 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int aaellipseColor	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rx,
		Sint16	ry,
		Uint32	color
	)

Draw anti-aliased ellipse with blending.

Note: Based on code from Anders Lindstroem, which is based on code from sge library, which is based on code from TwinLib.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the aa-ellipse.
y	Y coordinate of the center of the aa-ellipse.
rx	Horizontal radius in pixels of the aa-ellipse.
ry	Vertical radius in pixels of the aa-ellipse.
color	The color value of the aa-ellipse to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 4088 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int aaellipseRGBA	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rx,
		Sint16	ry,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw anti-aliased ellipse with blending.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the aa-ellipse.
y	Y coordinate of the center of the aa-ellipse.
rx	Horizontal radius in pixels of the aa-ellipse.
ry	Vertical radius in pixels of the aa-ellipse.
r	The red value of the aa-ellipse to draw.
g	The green value of the aa-ellipse to draw.
b	The blue value of the aa-ellipse to draw.
a	The alpha value of the aa-ellipse to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 4328 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int aalineColor	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Uint32	color
	)

Ddraw anti-aliased line with alpha blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point of the aa-line.
y1	Y coordinate of the first point of the aa-line.
x2	X coordinate of the second point of the aa-line.
y2	Y coordinate of the second point of the aa-line.
color	The color value of the aa-line to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 2828 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int aalineRGBA	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw anti-aliased line with alpha blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point of the aa-line.
y1	Y coordinate of the first point of the aa-line.
x2	X coordinate of the second point of the aa-line.
y2	Y coordinate of the second point of the aa-line.
r	The red value of the aa-line to draw.
g	The green value of the aa-line to draw.
b	The blue value of the aa-line to draw.
a	The alpha value of the aa-line to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 2848 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int aapolygonColor	(	SDL_Surface *	dst,
		const Sint16 *	vx,
		const Sint16 *	vy,
		int	n,
		Uint32	color
	)

Draw anti-aliased polygon with alpha blending.

Parameters:

dst	The surface to draw on.
vx	Vertex array containing X coordinates of the points of the aa-polygon.
vy	Vertex array containing Y coordinates of the points of the aa-polygon.
n	Number of points in the vertex array. Minimum number is 3.
color	The color value of the aa-polygon to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 5077 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int aapolygonRGBA	(	SDL_Surface *	dst,
		const Sint16 *	vx,
		const Sint16 *	vy,
		int	n,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw anti-aliased polygon with alpha blending.

Parameters:

dst	The surface to draw on.
vx	Vertex array containing X coordinates of the points of the aa-polygon.
vy	Vertex array containing Y coordinates of the points of the aa-polygon.
n	Number of points in the vertex array. Minimum number is 3.
r	The red value of the aa-polygon to draw.
g	The green value of the aa-polygon to draw.
b	The blue value of the aa-polygon to draw.
a	The alpha value of the aa-polygon to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 5145 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int aatrigonColor	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Sint16	x3,
		Sint16	y3,
		Uint32	color
	)

Draw anti-aliased trigon (triangle outline) with alpha blending.

Note: Creates vertex array and uses aapolygon routine to render.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point of the aa-trigon.
y1	Y coordinate of the first point of the aa-trigon.
x2	X coordinate of the second point of the aa-trigon.
y2	Y coordinate of the second point of the aa-trigon.
x3	X coordinate of the third point of the aa-trigon.
y3	Y coordinate of the third point of the aa-trigon.
color	The color value of the aa-trigon to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 4859 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int aatrigonRGBA	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Sint16	x3,
		Sint16	y3,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw anti-aliased trigon (triangle outline) with alpha blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point of the aa-trigon.
y1	Y coordinate of the first point of the aa-trigon.
x2	X coordinate of the second point of the aa-trigon.
y2	Y coordinate of the second point of the aa-trigon.
x3	X coordinate of the third point of the aa-trigon.
y3	Y coordinate of the third point of the aa-trigon.
r	The red value of the aa-trigon to draw.
g	The green value of the aa-trigon to draw.
b	The blue value of the aa-trigon to draw.
a	The alpha value of the aa-trigon to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 4891 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int arcColor	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rad,
		Sint16	start,
		Sint16	end,
		Uint32	color
	)

Arc with blending.

Note Arc drawing is based on circle algorithm by A. Schiffler and written by D. Raber. Calculates which octants arc goes through and renders pixels accordingly.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the arc.
y	Y coordinate of the center of the arc.
rad	Radius in pixels of the arc.
start	Starting radius in degrees of the arc. 0 degrees is down, increasing counterclockwise.
end	Ending radius in degrees of the arc. 0 degrees is down, increasing counterclockwise.
color	The color value of the arc to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 3117 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int arcRGBA	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rad,
		Sint16	start,
		Sint16	end,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Arc with blending.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the arc.
y	Y coordinate of the center of the arc.
rad	Radius in pixels of the arc.
start	Starting radius in degrees of the arc. 0 degrees is down, increasing counterclockwise.
end	Ending radius in degrees of the arc. 0 degrees is down, increasing counterclockwise.
r	The red value of the arc to draw.
g	The green value of the arc to draw.
b	The blue value of the arc to draw.
a	The alpha value of the arc to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 3488 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int bezierColor	(	SDL_Surface *	dst,
		const Sint16 *	vx,
		const Sint16 *	vy,
		int	n,
		int	s,
		Uint32	color
	)

Draw a bezier curve with alpha blending.

Parameters:

dst	The surface to draw on.
vx	Vertex array containing X coordinates of the points of the bezier curve.
vy	Vertex array containing Y coordinates of the points of the bezier curve.
n	Number of points in the vertex array. Minimum number is 3.
s	Number of steps for the interpolation. Minimum number is 2.
color	The color value of the bezier curve to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 6221 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int bezierRGBA	(	SDL_Surface *	dst,
		const Sint16 *	vx,
		const Sint16 *	vy,
		int	n,
		int	s,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw a bezier curve with alpha blending.

Parameters:

dst	The surface to draw on.
vx	Vertex array containing X coordinates of the points of the bezier curve.
vy	Vertex array containing Y coordinates of the points of the bezier curve.
n	Number of points in the vertex array. Minimum number is 3.
s	Number of steps for the interpolation. Minimum number is 2.
r	The red value of the bezier curve to draw.
g	The green value of the bezier curve to draw.
b	The blue value of the bezier curve to draw.
a	The alpha value of the bezier curve to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 6296 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int boxColor	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Uint32	color
	)

Draw box (filled rectangle) with blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point (i.e. top right) of the box.
y1	Y coordinate of the first point (i.e. top right) of the box.
x2	X coordinate of the second point (i.e. bottom left) of the box.
y2	Y coordinate of the second point (i.e. bottom left) of the box.
color	The color value of the box to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 2107 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int boxRGBA	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw box (filled rectangle) with blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point (i.e. top right) of the box.
y1	Y coordinate of the first point (i.e. top right) of the box.
x2	X coordinate of the second point (i.e. bottom left) of the box.
y2	Y coordinate of the second point (i.e. bottom left) of the box.
r	The red value of the box to draw.
g	The green value of the box to draw.
b	The blue value of the box to draw.
a	The alpha value of the box to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 2319 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int characterColor	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		char	c,
		Uint32	color
	)

Draw a character of the currently set font.

On first call for a particular character and color combination, the function needs to generate the character surface (slower. Subsequent calls blit a cached surface (fast). Uses alpha blending if A<255 in color.

Parameters:

dst	The surface to draw on.
x	X (horizontal) coordinate of the upper left corner of the character.
y	Y (vertical) coordinate of the upper left corner of the character.
c	The character to draw.
color	The color value of the character to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 5908 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int characterRGBA	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		char	c,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw a character of the currently set font.

Parameters:

dst	The surface to draw on.
x	X (horizontal) coordinate of the upper left corner of the character.
y	Y (vertical) coordinate of the upper left corner of the character.
c	The character to draw.
r	The red value of the character to draw.
g	The green value of the character to draw.
b	The blue value of the character to draw.
a	The alpha value of the character to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 6077 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int circleColor	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rad,
		Uint32	color
	)

Draw circle with blending.

Note: Circle drawing routine is based on an algorithms from the sge library, but modified by A. Schiffler for multiple pixel-draw removal and other minor speedup changes.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the circle.
y	Y coordinate of the center of the circle.
rad	Radius in pixels of the circle.
color	The color value of the circle to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 2872 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int circleRGBA	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rad,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw circle with blending.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the circle.
y	Y coordinate of the center of the circle.
rad	Radius in pixels of the circle.
r	The red value of the circle to draw.
g	The green value of the circle to draw.
b	The blue value of the circle to draw.
a	The alpha value of the circle to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 3090 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int ellipseColor	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rx,
		Sint16	ry,
		Uint32	color
	)

Draw ellipse with blending.

Note: Based on algorithms from sge library with modifications by A. Schiffler for multiple-pixel draw removal and other minor speedup changes.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the ellipse.
y	Y coordinate of the center of the ellipse.
rx	Horizontal radius in pixels of the ellipse.
ry	Vertical radius in pixels of the ellipse.
color	The color value of the ellipse to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 3709 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int ellipseRGBA	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rx,
		Sint16	ry,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw ellipse with blending.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the ellipse.
y	Y coordinate of the center of the ellipse.
rx	Horizontal radius in pixels of the ellipse.
ry	Vertical radius in pixels of the ellipse.
r	The red value of the ellipse to draw.
g	The green value of the ellipse to draw.
b	The blue value of the ellipse to draw.
a	The alpha value of the ellipse to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 4023 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int filledCircleColor	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rad,
		Uint32	color
	)

Draw filled circle with blending.

Note: Based on algorithms from sge library with modifications by A. Schiffler for multiple-hline draw removal and other minor speedup changes.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the filled circle.
y	Y coordinate of the center of the filled circle.
rad	Radius in pixels of the filled circle.
color	The color value of the filled circle to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 3556 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int filledCircleRGBA	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rad,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw filled circle with blending.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the filled circle.
y	Y coordinate of the center of the filled circle.
rad	Radius in pixels of the filled circle.
r	The red value of the filled circle to draw.
g	The green value of the filled circle to draw.
b	The blue value of the filled circle to draw.
a	The alpha value of the filled circle to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 3683 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int filledEllipseColor	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rx,
		Sint16	ry,
		Uint32	color
	)

Draw filled ellipse with blending.

Note: Based on algorithm from sge library with multiple-hline draw removal and other speedup changes.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the filled ellipse.
y	Y coordinate of the center of the filled ellipse.
rx	Horizontal radius in pixels of the filled ellipse.
ry	Vertical radius in pixels of the filled ellipse.
color	The color value of the filled ellipse to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 4358 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int filledEllipseRGBA	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rx,
		Sint16	ry,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw filled ellipse with blending.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the filled ellipse.
y	Y coordinate of the center of the filled ellipse.
rx	Horizontal radius in pixels of the filled ellipse.
ry	Vertical radius in pixels of the filled ellipse.
r	The red value of the filled ellipse to draw.
g	The green value of the filled ellipse to draw.
b	The blue value of the filled ellipse to draw.
a	The alpha value of the filled ellipse to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 4526 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int filledPieColor	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rad,
		Sint16	start,
		Sint16	end,
		Uint32	color
	)

Draw filled pie with alpha blending.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the filled pie.
y	Y coordinate of the center of the filled pie.
rad	Radius in pixels of the filled pie.
start	Starting radius in degrees of the filled pie.
end	Ending radius in degrees of the filled pie.
color	The color value of the filled pie to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 4747 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int filledPieRGBA	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rad,
		Sint16	start,
		Sint16	end,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw filled pie with alpha blending.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the filled pie.
y	Y coordinate of the center of the filled pie.
rad	Radius in pixels of the filled pie.
start	Starting radius in degrees of the filled pie.
end	Ending radius in degrees of the filled pie.
r	The red value of the filled pie to draw.
g	The green value of the filled pie to draw.
b	The blue value of the filled pie to draw.
a	The alpha value of the filled pie to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 4768 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int filledPolygonColor	(	SDL_Surface *	dst,
		const Sint16 *	vx,
		const Sint16 *	vy,
		int	n,
		Uint32	color
	)

Draw filled polygon with alpha blending.

Note: Standard filledPolygon function is calling multithreaded version with NULL parameters to use the global vertex cache.

Parameters:

dst	The surface to draw on.
vx	Vertex array containing X coordinates of the points of the filled polygon.
vy	Vertex array containing Y coordinates of the points of the filled polygon.
n	Number of points in the vertex array. Minimum number is 3.
color	The color value of the filled polygon to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 5394 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int filledPolygonColorMT	(	SDL_Surface *	dst,
		const Sint16 *	vx,
		const Sint16 *	vy,
		int	n,
		Uint32	color,
		int **	polyInts,
		int *	polyAllocated
	)

Draw filled polygon with alpha blending (multi-threaded capable).

Note: The last two parameters are optional; but are required for multithreaded operation.

Parameters:

dst	The surface to draw on.
vx	Vertex array containing X coordinates of the points of the filled polygon.
vy	Vertex array containing Y coordinates of the points of the filled polygon.
n	Number of points in the vertex array. Minimum number is 3.
color	The color value of the filled polygon to draw (0xRRGGBBAA).
polyInts	Preallocated, temporary vertex array used for sorting vertices. Required for multithreaded operation; set to NULL otherwise.
polyAllocated	Flag indicating if temporary vertex array was allocated. Required for multithreaded operation; set to NULL otherwise.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 5197 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int filledPolygonRGBA	(	SDL_Surface *	dst,
		const Sint16 *	vx,
		const Sint16 *	vy,
		int	n,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw filled polygon with alpha blending.

Parameters:

dst	The surface to draw on.
vx	Vertex array containing X coordinates of the points of the filled polygon.
vy	Vertex array containing Y coordinates of the points of the filled polygon.
n	Number of points in the vertex array. Minimum number is 3.
r	The red value of the filled polygon to draw.
g	The green value of the filled polygon to draw.
b	The blue value of the filed polygon to draw.
a	The alpha value of the filled polygon to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 5416 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int filledPolygonRGBAMT	(	SDL_Surface *	dst,
		const Sint16 *	vx,
		const Sint16 *	vy,
		int	n,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a,
		int **	polyInts,
		int *	polyAllocated
	)

Draw filled polygon with alpha blending (multi-threaded capable).

Note: The last two parameters are optional; but are required for multithreaded operation.

Parameters:

dst	The surface to draw on.
vx	Vertex array containing X coordinates of the points of the filled polygon.
vy	Vertex array containing Y coordinates of the points of the filled polygon.
n	Number of points in the vertex array. Minimum number is 3.
r	The red value of the filled polygon to draw.
g	The green value of the filled polygon to draw.
b	The blue value of the filed polygon to draw.
a	The alpha value of the filled polygon to draw.
polyInts	Preallocated, temporary vertex array used for sorting vertices. Required for multithreaded operation; set to NULL otherwise.
polyAllocated	Flag indicating if temporary vertex array was allocated. Required for multithreaded operation; set to NULL otherwise.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 5372 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int filledTrigonColor	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Sint16	x3,
		Sint16	y3,
		Uint32	color
	)

Draw filled trigon (triangle) with alpha blending.

Note: Creates vertex array and uses aapolygon routine to render.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point of the filled trigon.
y1	Y coordinate of the first point of the filled trigon.
x2	X coordinate of the second point of the filled trigon.
y2	Y coordinate of the second point of the filled trigon.
x3	X coordinate of the third point of the filled trigon.
y3	Y coordinate of the third point of the filled trigon.
color	The color value of the filled trigon to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 4925 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int filledTrigonRGBA	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Sint16	x3,
		Sint16	y3,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw filled trigon (triangle) with alpha blending.

Note: Creates vertex array and uses aapolygon routine to render.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point of the filled trigon.
y1	Y coordinate of the first point of the filled trigon.
x2	X coordinate of the second point of the filled trigon.
y2	Y coordinate of the second point of the filled trigon.
x3	X coordinate of the third point of the filled trigon.
y3	Y coordinate of the third point of the filled trigon.
r	The red value of the filled trigon to draw.
g	The green value of the filled trigon to draw.
b	The blue value of the filled trigon to draw.
a	The alpha value of the filled trigon to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 4959 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE void gfxPrimitivesSetFont	(	const void *	fontdata,
		Uint32	cw,
		Uint32	ch
	)

Sets or resets the current global font data.

The font data array is organized in follows: [fontdata] = [character 0][character 1]...[character 255] where [character n] = [byte 1 row 1][byte 2 row 1]...[byte {pitch} row 1][byte 1 row 2] ...[byte {pitch} row height] where [byte n] = [bit 0]...[bit 7] where [bit n] = [0 for transparent pixel|1 for colored pixel]

Parameters:

fontdata	Pointer to array of font data. Set to NULL, to reset global font to the default 8x8 font.
cw	Width of character in bytes. Ignored if fontdata==NULL.
ch	Height of character in bytes. Ignored if fontdata==NULL.

Definition at line 5815 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE void gfxPrimitivesSetFontRotation

(

Uint32

rotation

)

Sets current global font character rotation steps.

Default is 0 (no rotation). 1 = 90deg clockwise. 2 = 180deg clockwise. 3 = 270deg clockwise. Changing the rotation, will reset the character cache.

Parameters:

rotation

Number of 90deg clockwise steps to rotate

Definition at line 5861 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int hlineColor	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	x2,
		Sint16	y,
		Uint32	color
	)

Draw horizontal line with blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point (i.e. left) of the line.
x2	X coordinate of the second point (i.e. right) of the line.
y	Y coordinate of the points of the line.
color	The color value of the line to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 1204 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int hlineRGBA	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	x2,
		Sint16	y,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw horizontal line with blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point (i.e. left) of the line.
x2	X coordinate of the second point (i.e. right) of the line.
y	Y coordinate of the points of the line.
r	The red value of the line to draw.
g	The green value of the line to draw.
b	The blue value of the line to draw.
a	The alpha value of the line to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 1373 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int lineColor	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Uint32	color
	)

Draw line with alpha blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point of the line.
y1	Y coordinate of the first point of the line.
x2	X coordinate of the second point of the line.
y2	Y coordinate of the second point of the line.
color	The color value of the line to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 2347 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int lineRGBA	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw line with alpha blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point of the line.
y1	Y coordinate of the first point of the line.
x2	X coordinate of the second point of the line.
y2	Y coordinate of the second point of the line.
r	The red value of the line to draw.
g	The green value of the line to draw.
b	The blue value of the line to draw.
a	The alpha value of the line to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 2556 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int pieColor	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rad,
		Sint16	start,
		Sint16	end,
		Uint32	color
	)

Draw pie (outline) with alpha blending.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the pie.
y	Y coordinate of the center of the pie.
rad	Radius in pixels of the pie.
start	Starting radius in degrees of the pie.
end	Ending radius in degrees of the pie.
color	The color value of the pie to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 4703 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int pieRGBA	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Sint16	rad,
		Sint16	start,
		Sint16	end,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw pie (outline) with alpha blending.

Parameters:

dst	The surface to draw on.
x	X coordinate of the center of the pie.
y	Y coordinate of the center of the pie.
rad	Radius in pixels of the pie.
start	Starting radius in degrees of the pie.
end	Ending radius in degrees of the pie.
r	The red value of the pie to draw.
g	The green value of the pie to draw.
b	The blue value of the pie to draw.
a	The alpha value of the pie to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 4726 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int pixelColor	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Uint32	color
	)

Pixel draw with blending enabled if a<255.

Parameters:

dst	The surface to draw on.
x	X (horizontal) coordinate of the pixel.
y	Y (vertical) coordinate of the pixel.
color	The color value of the pixel to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 509 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int pixelRGBA	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Pixel draw with blending enabled if a<255.

Parameters:

dst	The surface to draw on.
x	X (horizontal) coordinate of the pixel.
y	Y (vertical) coordinate of the pixel.
r	The red color value of the pixel to draw.
g	The green color value of the pixel to draw.
b	The blue color value of the pixel to draw.
a	The alpha value of the pixel to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 995 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int polygonColor	(	SDL_Surface *	dst,
		const Sint16 *	vx,
		const Sint16 *	vy,
		int	n,
		Uint32	color
	)

Draw polygon with alpha blending.

Parameters:

dst	The surface to draw on.
vx	Vertex array containing X coordinates of the points of the polygon.
vy	Vertex array containing Y coordinates of the points of the polygon.
n	Number of points in the vertex array. Minimum number is 3.
color	The color value of the polygon to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 4988 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int polygonRGBA	(	SDL_Surface *	dst,
		const Sint16 *	vx,
		const Sint16 *	vy,
		int	n,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw polygon with alpha blending.

Parameters:

dst	The surface to draw on.
vx	Vertex array containing X coordinates of the points of the polygon.
vy	Vertex array containing Y coordinates of the points of the polygon.
n	Number of points in the vertex array. Minimum number is 3.
r	The red value of the polygon to draw.
g	The green value of the polygon to draw.
b	The blue value of the polygon to draw.
a	The alpha value of the polygon to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 5056 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int rectangleColor	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Uint32	color
	)

Draw rectangle with blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point (i.e. top right) of the rectangle.
y1	Y coordinate of the first point (i.e. top right) of the rectangle.
x2	X coordinate of the second point (i.e. bottom left) of the rectangle.
y2	Y coordinate of the second point (i.e. bottom left) of the rectangle.
color	The color value of the rectangle to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 1580 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int rectangleRGBA	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw rectangle with blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point (i.e. top right) of the rectangle.
y1	Y coordinate of the first point (i.e. top right) of the rectangle.
x2	X coordinate of the second point (i.e. bottom left) of the rectangle.
y2	Y coordinate of the second point (i.e. bottom left) of the rectangle.
r	The red value of the rectangle to draw.
g	The green value of the rectangle to draw.
b	The blue value of the rectangle to draw.
a	The alpha value of the rectangle to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 1663 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int roundedBoxColor	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Sint16	rad,
		Uint32	color
	)

Draw rounded-corner box (filled rectangle) with blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point (i.e. top right) of the box.
y1	Y coordinate of the first point (i.e. top right) of the box.
x2	X coordinate of the second point (i.e. bottom left) of the box.
y2	Y coordinate of the second point (i.e. bottom left) of the box.
rad	The radius of the corner arcs of the box.
color	The color value of the box to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 1837 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int roundedBoxRGBA	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Sint16	rad,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw rounded-corner box (filled rectangle) with blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point (i.e. top right) of the box.
y1	Y coordinate of the first point (i.e. top right) of the box.
x2	X coordinate of the second point (i.e. bottom left) of the box.
y2	Y coordinate of the second point (i.e. bottom left) of the box.
rad	The radius of the corner arcs of the box.
r	The red value of the box to draw.
g	The green value of the box to draw.
b	The blue value of the box to draw.
a	The alpha value of the box to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 1970 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int roundedRectangleColor	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Sint16	rad,
		Uint32	color
	)

Draw rounded-corner rectangle with blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point (i.e. top right) of the rectangle.
y1	Y coordinate of the first point (i.e. top right) of the rectangle.
x2	X coordinate of the second point (i.e. bottom left) of the rectangle.
y2	Y coordinate of the second point (i.e. bottom left) of the rectangle.
rad	The radius of the corner arc.
color	The color value of the rectangle to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 1685 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int roundedRectangleRGBA	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Sint16	rad,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw rounded-corner rectangle with blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point (i.e. top right) of the rectangle.
y1	Y coordinate of the first point (i.e. top right) of the rectangle.
x2	X coordinate of the second point (i.e. bottom left) of the rectangle.
y2	Y coordinate of the second point (i.e. bottom left) of the rectangle.
rad	The radius of the corner arc.
r	The red value of the rectangle to draw.
g	The green value of the rectangle to draw.
b	The blue value of the rectangle to draw.
a	The alpha value of the rectangle to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 1815 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int stringColor	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		const char *	s,
		Uint32	color
	)

Draw a string in the currently set font.

The spacing between consequtive characters in the string is the fixed number of pixels of the character width of the current global font.

Parameters:

dst	The surface to draw on.
x	X (horizontal) coordinate of the upper left corner of the string.
y	Y (vertical) coordinate of the upper left corner of the string.
s	The string to draw.
color	The color value of the string to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 6099 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int stringRGBA	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y,
		const char *	s,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw a string in the currently set font.

Parameters:

dst	The surface to draw on.
x	X (horizontal) coordinate of the upper left corner of the string.
y	Y (vertical) coordinate of the upper left corner of the string.
s	The string to draw.
r	The red value of the string to draw.
g	The green value of the string to draw.
b	The blue value of the string to draw.
a	The alpha value of the string to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 6143 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int texturedPolygon	(	SDL_Surface *	dst,
		const Sint16 *	vx,
		const Sint16 *	vy,
		int	n,
		SDL_Surface *	texture,
		int	texture_dx,
		int	texture_dy
	)

Draws a polygon filled with the given texture.

This standard version is calling multithreaded versions with NULL cache parameters.

Parameters:

dst	the destination surface,
vx	array of x vector components
vy	array of x vector components
n	the amount of vectors in the vx and vy array
texture	the sdl surface to use to fill the polygon
texture_dx	the offset of the texture relative to the screeen. if you move the polygon 10 pixels to the left and want the texture to apear the same you need to increase the texture_dx value
texture_dy	see texture_dx

Returns:

Returns 0 on success, -1 on failure.

Definition at line 5741 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int texturedPolygonMT	(	SDL_Surface *	dst,
		const Sint16 *	vx,
		const Sint16 *	vy,
		int	n,
		SDL_Surface *	texture,
		int	texture_dx,
		int	texture_dy,
		int **	polyInts,
		int *	polyAllocated
	)

Draws a polygon filled with the given texture (Multi-Threading Capable).

This operation use internally SDL_BlitSurface for lines of the source texture. It supports alpha drawing.

To get the best performance of this operation you need to make sure the texture and the dst surface have the same format (see http://docs.mandragor.org/files/Common_libs_documentation/SDL/SDL_Documentation_project_en/sdlblitsurface.html). The last two parameters are optional, but required for multithreaded operation. When set to NULL, uses global static temp array.

Parameters:

dst	the destination surface,
vx	array of x vector components
vy	array of x vector components
n	the amount of vectors in the vx and vy array
texture	the sdl surface to use to fill the polygon
texture_dx	the offset of the texture relative to the screeen. if you move the polygon 10 pixels to the left and want the texture to apear the same you need to increase the texture_dx value
texture_dy	see texture_dx
polyInts	preallocated temp array storage for vertex sorting (used for multi-threaded operation)
polyAllocated	flag indicating oif the temp array was allocated (used for multi-threaded operation)

Returns:

Returns 0 on success, -1 on failure.

Definition at line 5574 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int thickLineColor	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Uint8	width,
		Uint32	color
	)

Draw a thick line with alpha blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point of the line.
y1	Y coordinate of the first point of the line.
x2	X coordinate of the second point of the line.
y2	Y coordinate of the second point of the line.
width	Width of the line in pixels. Must be >0.
color	The color value of the line to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 6808 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int thickLineRGBA	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Uint8	width,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw a thick line with alpha blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point of the line.
y1	Y coordinate of the first point of the line.
x2	X coordinate of the second point of the line.
y2	Y coordinate of the second point of the line.
width	Width of the line in pixels. Must be >0.
r	The red value of the character to draw.
g	The green value of the character to draw.
b	The blue value of the character to draw.
a	The alpha value of the character to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 6847 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int trigonColor	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Sint16	x3,
		Sint16	y3,
		Uint32	color
	)

Draw trigon (triangle outline) with alpha blending.

Note: Creates vertex array and uses polygon routine to render.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point of the trigon.
y1	Y coordinate of the first point of the trigon.
x2	X coordinate of the second point of the trigon.
y2	Y coordinate of the second point of the trigon.
x3	X coordinate of the third point of the trigon.
y3	Y coordinate of the third point of the trigon.
color	The color value of the trigon to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 4793 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int trigonRGBA	(	SDL_Surface *	dst,
		Sint16	x1,
		Sint16	y1,
		Sint16	x2,
		Sint16	y2,
		Sint16	x3,
		Sint16	y3,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw trigon (triangle outline) with alpha blending.

Parameters:

dst	The surface to draw on.
x1	X coordinate of the first point of the trigon.
y1	Y coordinate of the first point of the trigon.
x2	X coordinate of the second point of the trigon.
y2	Y coordinate of the second point of the trigon.
x3	X coordinate of the third point of the trigon.
y3	Y coordinate of the third point of the trigon.
r	The red value of the trigon to draw.
g	The green value of the trigon to draw.
b	The blue value of the trigon to draw.
a	The alpha value of the trigon to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 4825 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int vlineColor	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y1,
		Sint16	y2,
		Uint32	color
	)

Draw vertical line with blending.

Parameters:

dst	The surface to draw on.
x	X coordinate of the points of the line.
y1	Y coordinate of the first point (i.e. top) of the line.
y2	Y coordinate of the second point (i.e. bottom) of the line.
color	The color value of the line to draw (0xRRGGBBAA).

Returns:

Returns 0 on success, -1 on failure.

Definition at line 1392 of file SDL_gfxPrimitives.c.

SDL_GFXPRIMITIVES_SCOPE int vlineRGBA	(	SDL_Surface *	dst,
		Sint16	x,
		Sint16	y1,
		Sint16	y2,
		Uint8	r,
		Uint8	g,
		Uint8	b,
		Uint8	a
	)

Draw vertical line with blending.

Parameters:

dst	The surface to draw on.
x	X coordinate of the points of the line.
y1	Y coordinate of the first point (i.e. top) of the line.
y2	Y coordinate of the second point (i.e. bottom) of the line.
r	The red value of the line to draw.
g	The green value of the line to draw.
b	The blue value of the line to draw.
a	The alpha value of the line to draw.

Returns:

Returns 0 on success, -1 on failure.

Definition at line 1560 of file SDL_gfxPrimitives.c.