#include "../../ugbc.h"

Functions
void	point_at (Environment *_environment, int _x, int _y)
	Emit ASM code for POINT AT ([int],[int]).
void	point_at_vars (Environment _environment, char _x, char *_y)
	Emit ASM code for POINT AT ([int]x,[int]x).

Function Documentation

◆ point_at()

void point_at	(	Environment *	_environment,
		int	_x,
		int	_y )

Emit ASM code for POINT AT ([int],[int]).

This function outputs a code that draws a pixel on the screen in bitmap mode on coordinates given explicitly and directly as integers.

Precondition: Bitmap must be enabled at least once with instruction BITMAP ENABLE.

Parameters

_environment	Current calling environment
_x	Abscissa of the point to draw
_y	Ordinate of the point

Exceptions

EXIT_FAILURE "CRITICAL: POINT AT (xxx,xxx) needs BITMAP ENABLE"

Definition at line 77 of file point_at.c.

◆ point_at_vars()

void point_at_vars	(	Environment *	_environment,
		char *	_x,
		char *	_y )

Emit ASM code for POINT AT ([int]x,[int]x).

This function outputs a code that draws a pixel on the screen in bitmap mode on coordinates given explicitly and directly as integers. To do this, it calculates both the position in memory where it will draw and the offset within the byte, storing this information in the following special variables:

pen_address - offset in memory that refers to the pixel to be modified

Precondition: Bitmap must be enabled at least once with instruction BITMAP ENABLE.