Arc Segment. More...

#include <polyver.h>

Inheritance diagram for a2dVpathArcSegment:

Collaboration diagram for a2dVpathArcSegment:

Public Member Functions
	a2dVpathArcSegment (double x1, double y1, double x2, double y2, a2dPATHSEG type=a2dPATHSEG_ARCTO, a2dPATHSEG_END close=a2dPATHSEG_END_OPEN)
	create arc segment More...

	a2dVpathArcSegment (a2dVpathSegmentPtr prev, double xc, double yc, double angle, a2dPATHSEG type=a2dPATHSEG_ARCTO, a2dPATHSEG_END close=a2dPATHSEG_END_OPEN)
	create arc segment More...

	a2dVpathArcSegment (a2dVpathSegmentPtr prev, double xc, double yc, double x1, double y1, double x2, double y2, a2dPATHSEG type=a2dPATHSEG_ARCTO, a2dPATHSEG_END close=a2dPATHSEG_END_OPEN)
	create arc segment More...

	a2dVpathArcSegment (const a2dVpathArcSegment &other)
	constructor

	~a2dVpathArcSegment ()
	destructor

virtual a2dVpathSegment *	Clone ()
	create exact copy

bool	CalcR (a2dVpathSegmentPtr prev, double &radius, double &center_x, double &center_y, double &beginrad, double &midrad, double &endrad, double &phit)
	Calculation of center for the Arc. More...

virtual double	Length (a2dVpathSegmentPtr prev)
	calculate length

Public Member Functions inherited from a2dVpathSegment
	a2dVpathSegment (double x, double y, a2dPATHSEG type=a2dPATHSEG_LINETO, a2dPATHSEG_END close=a2dPATHSEG_END_OPEN)
	constructor More...

	a2dVpathSegment (const a2dVpathSegment &other)
	constructor

virtual	~a2dVpathSegment ()
	destructor

a2dPATHSEG	GetType () const
	easy way to test type of segment

bool	GetBin () const
	used in processing

void	SetBin (bool bin)
	used in processing

a2dPATHSEG_END	GetClose () const
	is this segment the closing a part since the last move

void	SetClose (a2dPATHSEG_END close)
	set this segment is closing a part since the last move

Public Attributes
double	m_x2
	second control point

double	m_y2
	second control point

Public Attributes inherited from a2dVpathSegment
double	m_x1
	x endpoint of line

double	m_y1
	y endpoint of line

bool	m_bin: 1
	Marker for walking over the segments.

a2dPATHSEG	m_type: 5
	easy way to test type of segment

a2dPATHSEG_END	m_close: 3
	is the path closing here or not

Detailed Description

Arc Segment.

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 1112 of file polyver.h.

Constructor & Destructor Documentation

a2dVpathArcSegment::a2dVpathArcSegment	(	double	x1,
		double	y1,
		double	x2,
		double	y2,
		a2dPATHSEG	type = `a2dPATHSEG_ARCTO`,
		a2dPATHSEG_END	close = `a2dPATHSEG_END_OPEN`
	)

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
type	draw or move towards point
close	if true close this path with the last move command/segment

Definition at line 3737 of file polyver.cpp.

a2dVpathArcSegment::a2dVpathArcSegment	(	a2dVpathSegmentPtr	prev,
		double	xc,
		double	yc,
		double	angle,
		a2dPATHSEG	type = `a2dPATHSEG_ARCTO`,
		a2dPATHSEG_END	close = `a2dPATHSEG_END_OPEN`
	)

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)
type	draw or move towards point
close	if true close this path with the last move command/segment

Definition at line 3749 of file polyver.cpp.

a2dVpathArcSegment::a2dVpathArcSegment	(	a2dVpathSegmentPtr	prev,
		double	xc,
		double	yc,
		double	x1,
		double	y1,
		double	x2,
		double	y2,
		a2dPATHSEG	type = `a2dPATHSEG_ARCTO`,
		a2dPATHSEG_END	close = `a2dPATHSEG_END_OPEN`
	)

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
type	draw or move towards point
close	if true close this path with the last move command/segment

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

Definition at line 3770 of file polyver.cpp.

Member Function Documentation

bool a2dVpathArcSegment::CalcR	(	a2dVpathSegmentPtr	prev,
		double &	radius,
		double &	center_x,
		double &	center_y,
		double &	beginrad,
		double &	midrad,
		double &	endrad,
		double &	phit
	)

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 3820 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