sgl::SevenSegmentDigit Class Reference

#include <sgl.h>

Collaboration diagram for sgl::SevenSegmentDigit:

Public Member Functions
	SevenSegmentDigit (Color color, double x, double y, double height)
double	get_x () const
double	get_y () const
double	get_height () const
void	paint () const
void	set_value (int value)
int	get_value () const
void	increment ()
void	decrement ()
void	resize (double inc)
void	move_to (double x, double y)

Protected Member Functions
void	update_segment_locations ()

Protected Attributes
int	current_value
Color	color
double	x
double	y
double	height
Point	segment_a [4]
Point	segment_b [4]
Point	segment_c [4]
Point	segment_d [4]
Point	segment_e [4]
Point	segment_f [4]
Point	segment_g [6]

Detailed Description

Used to draw decimal digits that look like LED/LCD seven-segment displays

Constructor & Destructor Documentation

SevenSegmentDigit()

sgl::SevenSegmentDigit::SevenSegmentDigit	(	Color	color,
		double	x,
		double	y,
		double	height
	)

The constructor sets the digit's color, position, and size.

Parameters

color	the color of the digit
x	the x coordinate of the digit's lower-left corner
y	the y coordinate of the digit's lower-left corner
height	the height of the digit

Member Function Documentation

decrement()

void sgl::SevenSegmentDigit::decrement

(

)

Decreases the digit's value by 1, modulo 10.

Returns

nothing

get_height()

double sgl::SevenSegmentDigit::get_height

(

)

const

Returns the digit's height.

Returns

the digit's height.

get_value()

int sgl::SevenSegmentDigit::get_value

(

)

const

Returns the digit's current value.

Returns

the digit's current value.

get_x()

double sgl::SevenSegmentDigit::get_x

(

)

const

Returns the x coordinate of the digit's lower-left corner.

Returns

the x coordinate of the digit's lower-left corner.

get_y()

double sgl::SevenSegmentDigit::get_y

(

)

const

Returns the y coordinate of the digit's lower-left corner.

Returns

the y coordinate of the digit's lower-left corner.

increment()

void sgl::SevenSegmentDigit::increment

(

)

Increases the digit's value by 1, modulo 10.

Returns

nothing

move_to()

void sgl::SevenSegmentDigit::move_to	(	double	x,
		double	y
	)

Moves the digit to a new location. The digit's size is unaffected.

Parameters

x	the new x coordinate of the digit's lower-left corner.
y	the new y coordinate of the digit's lower-left corner.

Returns

nothing

paint()

void sgl::SevenSegmentDigit::paint

(

)

const

Draws the digit.

resize()

void sgl::SevenSegmentDigit::resize

(

double

inc

)

Changes the height of the digit by a given amount. The digit's width changes proportionally.

Parameters

the	change in the height of the digit

Returns

nothing

set_value()

void sgl::SevenSegmentDigit::set_value

(

int

value

)

Set's the value of the digit. The assigned value is modulo ten.

Parameters

value

value to assign, modulo 10

Returns

nothing

update_segment_locations()

void sgl::SevenSegmentDigit::update_segment_locations ( )

protected

This helper method updates the vertices of the individual segments relative to the position of the digit. This method is called when the digit is repositioned.

Returns

nothing

Member Data Documentation

color

Color sgl::SevenSegmentDigit::color

protected

The color of the displayed digit.

current_value

int sgl::SevenSegmentDigit::current_value

protected

The current digit's value.

height

double sgl::SevenSegmentDigit::height

protected

The height of the LED.

x

double sgl::SevenSegmentDigit::x

protected

(x,y) coordinates of lower-left corner of the LED.

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The documentation for this class was generated from the following files:

• sgl.h
• sgl.hpp