Box Class Reference

The Box class defines a time-space region for measuring Edie's flow and density. More...

#include <results.h>

Public Member Functions
	Box (double xa, double xb, double ta, double tb)
	Constructor that defines a time-space box for measuring flow and density.
bool	contains (point *p)
	Checks whether a point lies within the box.
point *	get_intersection (point *p1, point *p2)
	Computes the intersection of two points with the edges of the box.
point *	inter_hor (point *p1, point *p2, double x)
	Calculates the intersection with a horizontal line at a given x value.
point *	inter_ver (point *p1, point *p2, double t)
	Calculates the intersection with a vertical line at a given t value.
vector< double > *	get_edie ()
	Computes Edie's flow and density values for the box.
void	print ()
	Prints the trails (vehicle paths) that pass through the box.

Public Attributes
vector< vector< point * > * > *	trails
	Stores the start and end points of trajectories crossing the box.

Detailed Description

The Box class defines a time-space region for measuring Edie's flow and density.

A Box is a rectangular area in time and space used to calculate flow and density values based on the vehicle trajectories that pass through it.

Constructor & Destructor Documentation

Box()

Box::Box	(	double	xa,
		double	xb,
		double	ta,
		double	tb )

Constructor that defines a time-space box for measuring flow and density.

Parameters

xa	Lower bound of the distance range.
xb	Upper bound of the distance range.
ta	Lower bound of the time range.
tb	Upper bound of the time range.

Member Function Documentation

contains()

bool Box::contains

(

point *

p

)

Checks whether a point lies within the box.

Parameters

p	The point to check.

Returns

true if the point is inside the box, false otherwise.

get_edie()

vector< double > * Box::get_edie

(

)

Computes Edie's flow and density values for the box.

Returns

A vector containing flow (Q) and density (K) values for the box.

get_intersection()

point * Box::get_intersection	(	point *	p1,
		point *	p2 )

Computes the intersection of two points with the edges of the box.

This method calculates the intersection point of a line segment defined by two points (p1, p2) with the edges of the box.

Parameters

p1	First point of the line segment.
p2	Second point of the line segment.

Returns

The point of intersection with the box edges.

inter_hor()

point * Box::inter_hor	(	point *	p1,
		point *	p2,
		double	x )

Calculates the intersection with a horizontal line at a given x value.

Parameters

p1	First point of the line segment.
p2	Second point of the line segment.
x	The x-coordinate of the horizontal line.

Returns

The intersection point.

inter_ver()

point * Box::inter_ver	(	point *	p1,
		point *	p2,
		double	t )

Calculates the intersection with a vertical line at a given t value.

Parameters

p1	First point of the line segment.
p2	Second point of the line segment.
t	The t-coordinate of the vertical line.

Returns

The intersection point.

print()

void Box::print

(

)

Prints the trails (vehicle paths) that pass through the box.

This is used for debugging and visualization purposes.

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

• include/results.h