Drawing

Functions to draw something on the screen. More...

Classes
struct	RGBA

Functions
i32	GetDisplayWidth (const Context &context)
i32	GetDisplayHeight (const Context &context)
void	SetPixel (Context &context, i32 x, i32 y, const RGBA &color)
const RGBA	GetPixel (const Context &context, i32 x, i32 y)
void	DrawClearScreen (Context &context, const RGBA &color={0, 0, 0, 255})
void	DrawLine (Context &context, i32 x0, i32 y0, i32 x1, i32 y1, const RGBA &color)
void	DrawRectFill (Context &context, i32 x, i32 y, i32 w, i32 h, const RGBA &color)
void	DrawRect (Context &context, i32 x, i32 y, i32 w, i32 h, const RGBA &color)
void	DrawCircle (Context &context, i32 x, i32 y, i32 radius, const RGBA &color)
void	DrawCircleFill (Context &context, i32 x, i32 y, i32 radius, const RGBA &color)
void	DrawSprite (Context &context, i32 sprite_id, i32 screen_x, i32 screen_y, i32 sheet_x, i32 sheet_y, i32 width, i32 height)

Detailed Description

Functions to draw something on the screen.

Function Documentation

void DrawCircle	(	Context &	context,
		i32	x,
		i32	y,
		i32	radius,
		const RGBA &	color
	)

Draw a circle border with the color. Circle body is transparent

Parameters

context
x	coordinate of the circle's center
y	coordinate of the circle's center
radius
color

See also

DrawCircleFill()

Definition at line 58 of file drawing.cpp.

References SetPixel().

void DrawCircleFill	(	Context &	context,
		i32	x,
		i32	y,
		i32	radius,
		const RGBA &	color
	)

Draw a circle border with the color. Circle body is filled with the same color as the border.

Parameters

context
x	coordinate of the circle's center
y	coordinate of the circle's center
radius
color

See also

DrawCircle()

Definition at line 74 of file drawing.cpp.

References SetPixel().

void DrawClearScreen	(	Context &	context,
		const RGBA &	color = {0, 0, 0, 255}
	)

Fill the screen with a solid color

Parameters

context
color	to fill the screen

Definition at line 23 of file drawing.cpp.

void DrawLine	(	Context &	context,
		i32	x0,
		i32	y0,
		i32	x1,
		i32	y1,
		const RGBA &	color
	)

Draw line on the screen from the [x0,y0] to the [x1,y1] with a color.

Parameters

context
x0	coordinate of the first point
y0	coordinate of the first point
x1	coordinate of the second point
y1	coordinate of the second point
color	of the line

Definition at line 26 of file drawing.cpp.

References SetPixel().

Referenced by DrawRect(), and DrawRectFill().

void DrawRect	(	Context &	context,
		i32	x,
		i32	y,
		i32	w,
		i32	h,
		const RGBA &	color
	)

Draw a rectangle borders with the color. Rectangle body is transparent.

To draw it you need a left-upper corner coordinates [x,y] and rectangle width and height.

Parameters

context
x	coordinate of the left-upper corner
y	coordinate of the left-upper corner
w	width of the rectangle to draw
h	width of the rectangle to draw
color	of the borders and filler

See also

DrawRectFill()

Definition at line 51 of file drawing.cpp.

References DrawLine().

void DrawRectFill	(	Context &	context,
		i32	x,
		i32	y,
		i32	w,
		i32	h,
		const RGBA &	color
	)

Draw a rectangle and fill it with color. To draw it you need a left-upper corner coordinates [x,y] and rectangle width and height.

Parameters

context
x	coordinate of the left-upper corner
y	coordinate of the left-upper corner
w	width of the rectangle to draw
h	width of the rectangle to draw
color	of the borders and filler

See also

DrawRect()

Definition at line 46 of file drawing.cpp.

References DrawLine().

i32 GetDisplayHeight

(

const Context &

context

)

Parameters

context

Returns

display height in pixels

Definition at line 13 of file drawing.cpp.

i32 GetDisplayWidth

(

const Context &

context

)

Parameters

context

Returns

display width in pixels

Definition at line 10 of file drawing.cpp.

const RGBA GetPixel	(	const Context &	context,
		i32	x,
		i32	y
	)

Get the pixel color at the [x,y] position

Parameters

context	of the application
x	coordinate of the pixel on the screen
y	coordinate of the pixel on the screen

Returns

color of the pixel

Definition at line 20 of file drawing.cpp.

void SetPixel	(	Context &	context,
		i32	x,
		i32	y,
		const RGBA &	color
	)

Set the pixel color at the [x,y] position

Parameters

context	of the application
x	coordinate of the pixel on the screen
y	coordinate of the pixel on the screen
color	of the pixel

Definition at line 16 of file drawing.cpp.

Referenced by DrawCircle(), DrawCircleFill(), DrawLine(), and Print().