mgdl-draw2d.h File Reference

Functions for basic 2D drawing operations. More...

#include <mgdl/mgdl-color.h>
#include <mgdl/mgdl-types.h>

Go to the source code of this file.

Functions
Rect	Rect_Create (short x, short y, short w, short h)
	Creates a rectangle struct.
Rect	Rect_CreateV2f (vec2 position, vec2 size)
	Creates a rectangle struct.
void	Draw2D_OrigoTo (short x, short y)
	Translates the origo to given point.
void	Draw2D_OrigoToV2f (vec2 origo)
void	Draw2D_RectLines (short x, short y, short x2, short y2, Color4f *color)
	Draws a box border.
void	Draw2D_RectLinesWH (short x, short y, short w, short h, Color4f *color)
void	Draw2D_RectLinesRec (Rect rect, Color4f *color)
void	Draw2D_Rect (short x, short y, short x2, short y2, Color4f *color)
	Draws a filled box.
void	Draw2D_RectR (Rect rect, Color4f *color)
void	Draw2D_Quad (short xtl, short ytl, short xbl, short ybl, short xbr, short ybr, short xtr, short ytr, Color4f *color)
	Draws a filled quad with freely positioned corners.
void	Draw2D_QuadV2f (vec2 tl, vec2 bl, vec2 br, vec2 tr, Color4f *color)
void	Draw2D_Line (short int x, short int y, short int x2, short int y2, Color4f *color)
	Draws a line.
void	Draw2D_LineV2f (vec2 start, vec2 end, Color4f *color)
	Draws a line.
void	Draw2D_Text (short x, short y, const char *text, Color4f *color)
	Draws text using the default font.
void	Draw2D_TextV2f (vec2 position, const char *text, Color4f *color)
	Draws text using the default font.

Detailed Description

Functions for basic 2D drawing operations.

2D drawing functions for debugging and ui elements and simple games. These functions expect the ortographic projection be set

Function Documentation

Draw2D_Line()

void Draw2D_Line	(	short int	x,
		short int	y,
		short int	x2,
		short int	y2,
		Color4f *	color
	)

Draws a line.

Parameters

x	Start point x
y	Start point y
x2	End point x
y2	End point y
color	Color of the line.

Draw2D_LineV2f()

void Draw2D_LineV2f	(	vec2	start,
		vec2	end,
		Color4f *	color
	)

Draws a line.

Parameters

start	Start point
end	Start point
color	Color of the line.

Draw2D_OrigoTo()

void Draw2D_OrigoTo	(	short	x,
		short	y
	)

Translates the origo to given point.

Parameters

x	Origo x in screen units.
x	Origo y in screen units.

Draw2D_Quad()

void Draw2D_Quad	(	short	xtl,
		short	ytl,
		short	xbl,
		short	ybl,
		short	xbr,
		short	ybr,
		short	xtr,
		short	ytr,
		Color4f *	color
	)

Draws a filled quad with freely positioned corners.

Note

The points needs to be in correct relation to each other since the quad is drawn counter-clockwise.

Parameters

xtl	Upper left corner x in screen units.
ytl	Upper left corner y in screen units.
xbl	Lower left corner x in screen units.
ybl	Lower left corner y in screen units.
xbr	Lower right corner x in screen units.
ybr	Lower right corner y in screen units.
xtr	Upper right corner x in screen units.
ytr	Upper right corner y in screen units.
color	Color of the quad.

Draw2D_Rect()

void Draw2D_Rect	(	short	x,
		short	y,
		short	x2,
		short	y2,
		Color4f *	color
	)

Draws a filled box.

Parameters

x	Upper left corner x in screen units.
y	Upper left corner y in screen units.
x2	Lower right corner x in screen units.
y2	Lower right corner y in screen units.
color	Color of the box.

Draw2D_RectLines()

void Draw2D_RectLines	(	short	x,
		short	y,
		short	x2,
		short	y2,
		Color4f *	color
	)

Draws a box border.

The box is drawn using GL_LINES so the width is 1 pixel by default

Parameters

x	Upper left corner x in screen units.
y	Upper left corner y in screen units.
x2	Lower right corner x in screen units.
y2	Lower right corner y in screen units.
color	Color of the border

Draw2D_Text()

void Draw2D_Text	(	short	x,
		short	y,
		const char *	text,
		Color4f *	color
	)

Draws text using the default font.

Parameters

x	Upper left x of first letter.
y	Upper left y of first letter.
text	Text to be drawn.
color	Color of the text.

Draw2D_TextV2f()

void Draw2D_TextV2f	(	vec2	position,
		const char *	text,
		Color4f *	color
	)

Draws text using the default font.

Parameters

position	Upper left corner of first letter
text	Text to be drawn.
color	Color of the text.

Rect_Create()

Rect Rect_Create	(	short	x,
		short	y,
		short	w,
		short	h
	)

Creates a rectangle struct.

Parameters

x	Top left corner x
y	Top left corner y
w	Width of rectangle
h	Height of rectangle

Returns

Created rectangle

Rect_CreateV2f()

Rect Rect_CreateV2f	(	vec2	position,
		vec2	size
	)

Creates a rectangle struct.

Parameters

position	Top left corner
size	Size of rectangle: x is width, y is height

Returns

Created rectangle