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drawing.h File Reference

All Points Addressable (APA) mode drawing library. More...

Defines
		#define	GRAPHICS_WIDTH
			Size of the screen in pixels.
		#define	SOLID
			Possible drawing modes.
		#define	WHITE
			Possible drawing colours.
		#define	M_NOFILL
			Possible fill styles for box() and circle().
		#define	SIGNED
			Possible values for signed_value in gprintln() and gprintn().
Functions
		void	gprint (char *str)
			Print the string 'str' with no interpretation.
		void	gprintln (INT16 number, INT8 radix, INT8 signed_value)
			Print the long number 'number' in radix 'radix'. More...
		void	gprintn (INT8 number, INT8 radix, INT8 signed_value)
			Print the number 'number' as in 'gprintln'.
		INT8	gprintf (char *fmt,...)
			Print the formatted string 'fmt' with arguments '...'.
		void	plot (UINT8 x, UINT8 y, UINT8 colour, UINT8 mode)
			Old style plot - try plot_point().
		void	plot_point (UINT8 x, UINT8 y)
			Plot a point in the current drawing mode and colour at (x,y).
		void	switch_data (UINT8 x, UINT8 y, unsigned char *src, unsigned char *dst)
			I (MLH) have no idea what switch_data does...
		void	draw_image (unsigned char *data)
			Ditto.
		void	line (UINT8 x1, UINT8 y1, UINT8 x2, UINT8 y2)
			Draw a line in the current drawing mode and colour from (x1,y1) to (x2,y2).
		void	box (UINT8 x1, UINT8 y1, UINT8 x2, UINT8 y2, UINT8 style)
			Draw a box (rectangle) with corners (x1,y1) and (x2,y2) using fill mode 'style' (one of NOFILL or FILL.
		void	circle (UINT8 x, UINT8 y, UINT8 radius, UINT8 style)
			Draw a circle with centre at (x,y) and radius 'radius'. More...
		UINT8	getpix (UINT8 x, UINT8 y)
			Returns the current colour of the pixel at (x,y).
		void	wrtchr (char chr)
			Prints the character 'chr' in the default font at the current position.
		void	gotogxy (UINT8 x, UINT8 y)
			Sets the current text position to (x,y). More...
		void	color (UINT8 forecolor, UINT8 backcolor, UINT8 mode)
			Set the current foreground colour (for pixels), background colour, and draw mode.

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Detailed Description

All Points Addressable (APA) mode drawing library.

Drawing routines originally by Pascal Felber Legendary overhall by Jon Fuge <jonny@q-continuum.demon.co.uk> Commenting by Michael Hope

Note that the standard text printf() and putchar() cannot be used in APA mode - use gprintf() and wrtchr() instead.

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Function Documentation

void gprintln (INT16 number, INT8 radix, INT8 signed_value)

Print the long number 'number' in radix 'radix'.

signed_value should be set to SIGNED or UNSIGNED depending on whether the number is signed or not

void circle (UINT8 x, UINT8 y, UINT8 radius, UINT8 style)

Draw a circle with centre at (x,y) and radius 'radius'.

'style' sets the fill mode

void gotogxy (UINT8 x, UINT8 y)

Sets the current text position to (x,y).

Note that x and y have units of cells (8 pixels)

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