#include <polyver.h>

Inheritance diagram for a2dArcSegment:

Collaboration diagram for a2dArcSegment:

Public Member Functions
	a2dArcSegment (double x1=0, double y1=0, double x2=0, double y2=0)
	create arc segment More...

	a2dArcSegment (const a2dLineSegment &prev, double xc, double yc, double angle)
	create arc segment More...

	a2dArcSegment (const a2dLineSegment &prev, double xc, double yc, double x1, double y1, double x2, double y2)
	create arc segment More...

	a2dArcSegment (const a2dArcSegment &other)
	copy constructor

	~a2dArcSegment ()
	destructor

virtual a2dLineSegment *	Clone ()
	create exact copy

bool	CalcR (const a2dLineSegment &prev, double &radius, double &center_x, double &center_y, double &beginrad, double &midrad, double &endrad, double &phit) const
	Calculation of center for the Arc. More...

virtual double	Length (const a2dLineSegment &prev)
	calculate length

void	CalcMidPoint (const a2dLineSegment &prev, double center_x, double center_y, double radius, bool clockwise)
	calculate new mid point bsed on prev segment radius and center. More...

a2dPoint2D	GetMidPoint () const
	get middle on arc segment between end and start

void	SetMidPoint (const a2dLineSegment &prev, double xm, double ym)
	set middle point of arc segment More...

double	GetOx (const a2dLineSegment &prev) const
	Get origin X of arc.

double	GetOy (const a2dLineSegment &prev) const
	Get origin Y of arc.

a2dPoint2D	GetOrigin (const a2dLineSegment &prev) const
	Get origin of arc.

a2dBoundingBox	GetBbox (const a2dLineSegment &prev, const a2dAffineMatrix &lworld=a2dIDENTITY_MATRIX) const
	Get bounding box of arc.

Public Member Functions inherited from a2dLineSegment
	a2dLineSegment (double x=0, double y=0)
	constructor More...

	a2dLineSegment (const a2dPoint2D &point)

	a2dLineSegment (const a2dLineSegment &other)

bool	GetArc () const

int	GetPointCount () const

bool	GetBin () const

void	SetBin (bool bin)

a2dPoint2D	GetPoint ()

void	SetPoint (a2dPoint2D pos)

void	SetSegType (a2dSegType type)
	Set the type of the segment.

a2dSegType	GetSegType ()
	get the type of the segment

virtual a2dBoundingBox	GetBbox (const a2dLineSegment &prev, const a2dAffineMatrix &lworld=a2dIDENTITY_MATRIX)

Public Attributes
double	m_x2
	x2 x of arc midpoint

double	m_y2
	y2 y of arc midpoint

Public Attributes inherited from a2dLineSegment
double	m_x
	x endpoint of line

double	m_y
	y endpoint of line

bool	m_bin: 1
	Marker for walking over the segments.

bool	m_arc: 1
	arc segment

unsigned int	m_pntCnt: 2

a2dSegType	m_segtype: 3
	type of segment

Detailed Description

Arc Segment in a2dVertexList.

Create an circular Arc segment. From the previous segment to this segment position, create an arc passing through a thrid point. The Third point defines the Arc segment going clockwise or anticlockwise from begin to end point.

Definition at line 371 of file polyver.h.

Constructor & Destructor Documentation

a2dArcSegment::a2dArcSegment	(	double	x1 = `0`,
		double	y1 = `0`,
		double	x2 = `0`,
		double	y2 = `0`
	)

create arc segment

Begin point of arc is position/endpoint of previous segment

Parameters

x1	x of arc endpoint
y1	y of arc endpoint
x2	x of arc midpoint
y2	y of arc midpoint

Definition at line 302 of file polyver.cpp.

a2dArcSegment::a2dArcSegment	(	const a2dLineSegment &	prev,
		double	xc,
		double	yc,
		double	angle
	)

create arc segment

Begin point of arc is position/endpoint of previous segment

Parameters

prev	previous segment
xc	x of arc center
yc	y of arc center
angle	angle of arc in degrees relative from the previous segment endpoint (negatif for clockwise)

Definition at line 310 of file polyver.cpp.

a2dArcSegment::a2dArcSegment	(	const a2dLineSegment &	prev,
		double	xc,
		double	yc,
		double	x1,
		double	y1,
		double	x2,
		double	y2
	)

create arc segment

Begin point of arc is position/endpoint of previous segment

Parameters

prev	previous segment
xc	x of arc center
yc	y of arc center
x1	x of arc endpoint
y1	y of arc endpoint
x2	x (xc,yc) ( x2,y2) define a line which the arc will cross
y2	y (xc,yc) ( x2,y2) define a line which the arc will cross

Remarks: radius is defined by prev segment endpoint and (xc,yc), x1,y1 is adjusted to fit radius.

Definition at line 328 of file polyver.cpp.

Member Function Documentation

void a2dArcSegment::CalcMidPoint	(	const a2dLineSegment &	prev,
		double	center_x,
		double	center_y,
		double	radius,
		bool	clockwise
	)

calculate new mid point bsed on prev segment radius and center.

Parameters

prev	the previous segment, to get start point of arc.
radius	radius of the circle calculated
center_x	x of the center calculated
center_y	y of the center calculated
clockwise	if true a clockwise arc segment is assumed for creating the mid point

Definition at line 389 of file polyver.cpp.

bool a2dArcSegment::CalcR	(	const a2dLineSegment &	prev,
		double &	radius,
		double &	center_x,
		double &	center_y,
		double &	beginrad,
		double &	midrad,
		double &	endrad,
		double &	phit
	)		const

Calculation of center for the Arc.

output :

Parameters

prev	the previous segment, to get start point of arc.
radius	radius of the circle calculated
center_x	x of the center calculated
center_y	y of the center calculated
beginrad	calculated starting angle in radians
midrad	calculated middle angle in radians
endrad	calculated end angle in radians
phit	total calculated in radians (AntiClockwise positif, else negatif )

Returns: true if the arc is indeed an Arc if a straight line return false.

Definition at line 411 of file polyver.cpp.

void a2dArcSegment::SetMidPoint	(	const a2dLineSegment &	prev,
		double	xm,
		double	ym
	)

set middle point of arc segment

Parameters

prev	the previous segment, to get start point of arc.
xm	x of middle point
ym	y of middle point

Definition at line 362 of file polyver.cpp.

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

Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation