a2dVpath Class Reference

Vector Path. More...

#include <polyver.h>

Inheritance diagram for a2dVpath:

Collaboration diagram for a2dVpath:

Public Member Functions
	a2dVpath (a2dVertexArray &vertexArray, bool moveToFirst=true, bool closeLast=false)
	a2dVpath (a2dVertexList &vertexList, bool moveToFirst=true, bool closeLast=false)
	~a2dVpath ()
	destructor
a2dVpath &	operator= (const a2dVpath &other)
	operator =
double	Length ()
	calculate length of path, assuming continues path.
bool	IsPolygon (bool allowArc=true)
	test if closed polygon ( a2dPATHSEG_MOVETO, a2dPATHSEG_LINETO, a2dPATHSEG_ARCTO )
bool	IsPolyline (bool allowArc=true)
	test if polyline ( a2dPATHSEG_MOVETO, a2dPATHSEG_LINETO, a2dPATHSEG_ARCTO )
void	Add (a2dVpathSegment *seg)
	add a segment
void	Add (a2dVertexArray &vertexArray, bool moveToFirst=true, bool closeLast=false)
	add a vertexArray to an existing path
void	Add (a2dVertexList &vertexList, bool moveToFirst=true, bool closeLast=false)
	add a vertexlist to an existing path
a2dVpathSegmentPtr	Item (wxUint32 index)
a2dVpathSegmentPtr	Item (wxUint32 index) const
void	RemoveAt (size_t index)
void	Insert (a2dVpathSegment *segment, size_t index)
void	MoveTo (double x, double y)
	add a MoveTo command to the path More...
void	LineTo (double x, double y, bool withStroke=true)
	add a LineTo command to the path More...
void	QBCurveTo (double x1, double y1, double x2, double y2, bool withStroke=true)
	add a quadratic bezier segment to the path More...
void	QBCurveTo (double x1, double y1, bool withStroke=true)
	add a quadratic bezier segment to the path, using the previous segment. More...
void	CBCurveTo (double x1, double y1, double x2, double y2, double x3, double y3, bool withStroke=true)
	add a quadratic bezier segment to the path More...
void	CBCurveTo (double x1, double y1, double x3, double y3, bool withStroke=true)
	add a quadratic bezier segment to the path, using the previous segment. More...
void	ArcTo (double x1, double y1, double x2, double y2, bool withStroke=true)
	add an arc segment to the path More...
void	ArcTo (double xc, double yc, double angle, bool withStroke=true)
	add an arc segment to the path, using the previous segment More...
void	ArcTo (double xc, double yc, double x1, double y1, double x2, double y2, bool withStroke=true)
	add an arc segment to the path, using the previous segment More...
void	Close (bool withStroke=true)
	Closing the path as a filled area. More...
void	ConvertToLines ()
	Convert complex segments to line segments.
void	ConvertToPolygon (a2dListOfa2dVertexList &addTo, bool arc=true)
void	Contour (double distance, a2dPATH_END_TYPE pathtype)
	create an offset contour at distance More...
void	Transform (const a2dAffineMatrix &world)
	transform all segments with given matrix More...
a2dBoundingBox	GetBbox (const a2dAffineMatrix &lworld=a2dIDENTITY_MATRIX)
	return a boundingbox of a transformed a2dVpath

Detailed Description

Vector Path.

Holds a wxArray of a2dVpathSegment objects. Drawing the sequence of segments, represents the form of the shape. Shape depends on the type of segment and style of that segment.

With Vpath very complex shapes can be generated, also disjoint. e.g. polygons with holes, donuts.

a2dVpathSegment is the baseclass for several types of segments.

See Also

a2dVpathQBCurveSegment

a2dVpathCBCurveSegment

a2dVpathArcSegment

Remarks

do use Shrink() after filling a a2dVpath, to reduce memory usage

Definition at line 1211 of file polyver.h.

Member Function Documentation

void a2dVpath::ArcTo	(	double	x1,
		double	y1,
		double	x2,
		double	y2,
		bool	withStroke = true
	)

add an arc segment to the path

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
withStroke	Do stroke or not this line segment

Definition at line 3950 of file polyver.cpp.

void a2dVpath::ArcTo	(	double	xc,
		double	yc,
		double	angle,
		bool	withStroke = true
	)

add an arc segment to the path, using the previous segment

Begin point of arc is position/endpoint of previous segment

\param xc x of arc center
\param yc y of arc center
\param angle angle of arc in degrees relative from the previous segment endpoint (negatif for clockwise)
\param withStroke Do stroke or not this line segment

Definition at line 3958 of file polyver.cpp.

void a2dVpath::ArcTo	(	double	xc,
		double	yc,
		double	x1,
		double	y1,
		double	x2,
		double	y2,
		bool	withStroke = true
	)

add an arc segment to the path, using the previous segment

Begin point of arc is position/endpoint of previous segment

Parameters

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
withStroke	Do stroke or not this line segment

Remarks

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

Definition at line 3966 of file polyver.cpp.

void a2dVpath::CBCurveTo	(	double	x1,
		double	y1,
		double	x2,
		double	y2,
		double	x3,
		double	y3,
		bool	withStroke = true
	)

add a quadratic bezier segment to the path

Parameters

x1	endpoint of curve
y1	endpoint of curve
x2	first control point coming from previous segment in path
y2	first control point coming from previous segment in path
x3	second control point coming from previous segment in path
y3	second control point coming from previous segment in path
withStroke	Do stroke or not this line segment

Definition at line 3934 of file polyver.cpp.

void a2dVpath::CBCurveTo	(	double	x1,
		double	y1,
		double	x3,
		double	y3,
		bool	withStroke = true
	)

add a quadratic bezier segment to the path, using the previous segment.

Parameters

x1	endpoint of curve
y1	endpoint of curve
x3	second control point coming from previous segment in path
y3	second control point coming from previous segment in path
withStroke	Do stroke or not this line segment

Remarks

x2 first control point is mirror of second control point of previous segment in path, if Cubic else last endpoint

y2 first control point is mirror of second control point of previous segment in path, if Cubic else last endpoint

Definition at line 3942 of file polyver.cpp.

void a2dVpath::Close

(

bool

withStroke = true

)

Closing the path as a filled area.

The part sinve the last move is close to that move vertex.

Parameters

withStroke

Do stroke or not this line segment

Definition at line 3974 of file polyver.cpp.

void a2dVpath::Contour	(	double	distance,
		a2dPATH_END_TYPE	pathtype
	)

create an offset contour at distance

From all path parts a version is created that surrounds the original part at the given distance.

Definition at line 4429 of file polyver.cpp.

void a2dVpath::ConvertToPolygon	(	a2dListOfa2dVertexList &	addTo,
		bool	arc = true
	)

Convert to a a2dVertexList, taking and assuming it has only closed contours in path. Replacing non line (and arc segments if arc is true) with line segments.

Definition at line 4313 of file polyver.cpp.

void a2dVpath::LineTo	(	double	x,
		double	y,
		bool	withStroke = true
	)

add a LineTo command to the path

Parameters

x	endpoint of line
y	endpoint of line
withStroke	Do stroke or not this line segment

Definition at line 3911 of file polyver.cpp.

void a2dVpath::MoveTo	(	double	x,
		double	y
	)

add a MoveTo command to the path

Parameters

x	point to move to
y	point to move to

Definition at line 3905 of file polyver.cpp.

void a2dVpath::QBCurveTo	(	double	x1,
		double	y1,
		double	x2,
		double	y2,
		bool	withStroke = true
	)

add a quadratic bezier segment to the path

Parameters

x1	endpoint of curve
y1	endpoint of curve
x2	first control point coming from previous segment in path
y2	first control point coming from previous segment in path
withStroke	Do stroke or not this line segment

Definition at line 3918 of file polyver.cpp.

void a2dVpath::QBCurveTo	(	double	x1,
		double	y1,
		bool	withStroke = true
	)

add a quadratic bezier segment to the path, using the previous segment.

Parameters

x1	endpoint of curve
y1	endpoint of curve
withStroke	Do stroke or not this line segment

Definition at line 3926 of file polyver.cpp.

void a2dVpath::Transform

(

const a2dAffineMatrix &

world

)

transform all segments with given matrix

Remarks

complex segments will be broken down to lines.

Definition at line 4075 of file polyver.cpp.

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

• polyver.h
• polyver.cpp