Graphix_calc::Graphix Class Reference

Фигура, представляющая собой график мат. функции More...

#include <Graphix.h>

Inheritance diagram for Graphix_calc::Graphix:

Collaboration diagram for Graphix_calc::Graphix:

Public Member Functions
	Graphix (std::function< double(double)> calc, double min_x, double max_x, Graph_lib::Point origin, unsigned int point_amount, double unit_intr)
	Инициализирует новый экземпляр Graphix (область определения [min_x:max_x))
Color	color () const
void	draw () const
Color	fill_color () const
Line_style	get_style () const
virtual void	move (int dx, int dy)
size_t	number_of_points () const
Point	point (int i) const
void	set_color (Color _color)
void	set_fill_color (Color _color)
void	set_style (Line_style sty)

Protected Member Functions
void	add (Point p)
virtual void	draw_lines () const
void	set_point (int i, Point p)

Private Attributes
Color	c {static_cast<Color>(fl_color())}
Color	f_c {Color::invisible}
Line_style	ls {0}
std::vector< Point >	points

Detailed Description

Фигура, представляющая собой график мат. функции

Constructor & Destructor Documentation

Graphix()

Graphix_calc::Graphix::Graphix	(	std::function< double(double)>	calc,
		double	min_x,
		double	max_x,
		Graph_lib::Point	origin,
		unsigned int	point_amount,
		double	unit_intr )

Инициализирует новый экземпляр Graphix (область определения [min_x:max_x))

Parameters

calc	лямбда-выр. от мат. функции
min_x	мин. знач. x
max_x	макс. знач. x
origin	начало координат
point_amount	кол-во точек
unit_intr	единичный отрезок

Перебираемое значение x мат. функции

                                   {
  if (max_x - min_x <= 0) invalid_argument("bad graphing range");
 
  if (point_amount < 2) invalid_argument("graphing point_amount must be >= 2");
 
  // (в том случае, если график - простая линия)
  else if (point_amount == 2) {
    add(converted_to_pix({min_x, calc(min_x)}, origin, unit_intr));
    add(converted_to_pix({max_x, calc(max_x)}, origin, unit_intr));
  } else {
    /// @brief Перебираемое значение x мат. функции
    double x = min_x;
    // (цикл нужен только, чтобы считать сколько точек уже было добавлено)
    for (unsigned int i = 0; i < point_amount; i++) {
      add(converted_to_pix({x, calc(x)}, origin, unit_intr));
      x += (max_x - min_x) / double(point_amount);
    }
  }
}

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Member Function Documentation

add()

void Graph_lib::Shape::add ( Point p )

inlineprotectedinherited

{ points.push_back(p); }

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color()

Color Graph_lib::Shape::color ( ) const

inlineinherited

{ return c; }

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draw()

void Graph_lib::Shape::draw ( ) const

inherited

                       {
  Fl_Color prev_color = fl_color();  // не существует хорошего портативного
                                     // способа получения текущего стиля
  fl_color(c.as_uint());
  fl_line_style(ls.style(), ls.w());
  draw_lines();
  fl_color(prev_color);  // reset color (к предыдущему) and style (к дефолтному)
  fl_line_style(0);
}

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draw_lines()

void Graph_lib::Shape::draw_lines ( ) const

protectedvirtualinherited

Reimplemented in Graph_lib::Open_polyline, Graph_lib::Closed_polyline, Graph_lib::Lines, Graph_lib::Text, Graph_lib::Marked_polyline, Graph_lib::Image, Graphix_calc::Axis, and Graphix_calc::Segmented_graphix.

                             {
  // (точек должно быть больше одной)
  if (color().visibility() && 1 < points.size())
    for (unsigned int i = 1; i < points.size(); ++i)
      fl_line(int(points[i - 1].x), int(points[i - 1].y), int(points[i].x),
              int(points[i].y));
}

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fill_color()

Color Graph_lib::Shape::fill_color ( ) const

inlineinherited

{ return f_c; }

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get_style()

Line_style Graph_lib::Shape::get_style ( ) const

inlineinherited

{ return ls; }

move()

void Graph_lib::Shape::move ( int dx, int dy )

virtualinherited

Reimplemented in Graph_lib::Image.

                               {
  for (unsigned int i = 0; i < points.size(); ++i) {
    points[i].x += dx;
    points[i].y += dy;
  }
}

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number_of_points()

size_t Graph_lib::Shape::number_of_points ( ) const

inlineinherited

{ return points.size(); }

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point()

Point Graph_lib::Shape::point ( int i ) const

inlineinherited

{ return points[i]; }

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set_color()

void Graph_lib::Shape::set_color ( Color _color )

inlineinherited

{ c = _color; }

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set_fill_color()

void Graph_lib::Shape::set_fill_color ( Color _color )

inlineinherited

{ f_c = _color; }

set_point()

void Graph_lib::Shape::set_point ( int i, Point p )

inlineprotectedinherited

{ points[i] = p; }

set_style()

void Graph_lib::Shape::set_style ( Line_style sty )

inlineinherited

{ ls = sty; }

Member Data Documentation

c

Color Graph_lib::Shape::c {static_cast<Color>(fl_color())}

privateinherited

{static_cast<Color>(fl_color())};

f_c

Color Graph_lib::Shape::f_c {Color::invisible}

privateinherited

{Color::invisible};

ls

Line_style Graph_lib::Shape::ls {0}

privateinherited

{0};

points

std::vector<Point> Graph_lib::Shape::points

privateinherited

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

• frontend/Graphix_calc/Graphix.h
• frontend/Graphix_calc/Graphix.cpp