CurveImp Class Reference

#include <curve_imp.h>

Inheritance diagram for CurveImp:

Public Types
typedef ObjectImp	Parent

Public Member Functions
Coordinate	attachPoint () const
QString	cartesianEquationString (const KigDocument &w) const
virtual bool	containsPoint (const Coordinate &p, const KigDocument &) const =0
virtual CurveImp *	copy () const =0
virtual double	getParam (const Coordinate &point, const KigDocument &) const
virtual const Coordinate	getPoint (double param, const KigDocument &) const =0
Public Member Functions inherited from ObjectImp
virtual	~ObjectImp ()
virtual bool	canFillInNextEscape () const
virtual bool	contains (const Coordinate &p, int width, const KigWidget &si) const =0
virtual void	draw (KigPainter &p) const =0
virtual bool	equals (const ObjectImp &rhs) const =0
virtual void	fillInNextEscape (QString &s, const KigDocument &) const
int	getPropGid (const char *pname) const
int	getPropLid (int propgid) const
const char *	getPropName (int propgid) const
virtual const char *	iconForProperty (int which) const
virtual const ObjectImpType *	impRequirementForProperty (int which) const
bool	inherits (const ObjectImpType *t) const
virtual bool	inRect (const Rect &r, int width, const KigWidget &si) const =0
virtual bool	isCache () const
virtual bool	isPropertyDefinedOnOrThroughThisImp (int which) const
virtual int	numberOfProperties () const
virtual const QByteArrayList	properties () const
virtual const QByteArrayList	propertiesInternalNames () const
virtual ObjectImp *	property (int which, const KigDocument &d) const
virtual Rect	surroundingRect () const =0
virtual ObjectImp *	transform (const Transformation &t) const =0
virtual const ObjectImpType *	type () const =0
bool	valid () const
virtual void	visit (ObjectImpVisitor *vtor) const =0

Static Public Member Functions
static const ObjectImpType *	stype ()
Static Public Member Functions inherited from ObjectImp
static const ObjectImpType *	stype ()

Protected Member Functions
double	getDist (double param, const Coordinate &p, const KigDocument &doc) const
double	getParamofmin (double a, double b, const Coordinate &p, const KigDocument &doc) const
Protected Member Functions inherited from ObjectImp
	ObjectImp ()

Detailed Description

This class represents a curve: something which is composed of points, like a line, a circle, a locus.

Definition at line 27 of file curve_imp.h.

Member Typedef Documentation

typedef ObjectImp CurveImp::Parent

Definition at line 39 of file curve_imp.h.

Member Function Documentation

Coordinate CurveImp::attachPoint ( ) const

virtual

Returns a reference point where to attach labels; when this returns an invalidCoord then the attachment is either not done at all, or done in a specific way (like for curves, or for points) The treatment of points could also take advantage of this attachment mechanism.

If this method returns a valid Coordinate, then this is interpreted as a pivot point for the label, which can still be moved relative to that point, but follows the object when the object changes. In practice a new RelativePointType is created (position of the string), this type in turn depends on the object (to get its attachPoint) and two DoubleImp that are interpreted as relative displacement (x and y)

Implements ObjectImp.

Definition at line 44 of file curve_imp.cc.

QString CurveImp::cartesianEquationString

(

const KigDocument &

w

)

const

Definition at line 270 of file curve_imp.cc.

virtual bool CurveImp::containsPoint ( const Coordinate &  p, const KigDocument &    ) const

pure virtual

Return whether this Curve contains the given point.

This is implemented as a numerical approximation. Implementations can/should use the value test_threshold in common.h as a threshold value.

Implemented in ArcImp, LineImp, ConicArcImp, RayImp, VectorImp, RationalBezierImp, ConicImp, SegmentImp, LocusImp, CubicImp, and BezierImp.

virtual CurveImp* CurveImp::copy ( ) const

pure virtual

Returns a copy of this ObjectImp.

The copy is an exact copy. Changes to the copy don't affect the original.

Implements ObjectImp.

Implemented in LineImp, ConicArcImp, ArcImp, RayImp, ConicImpPolar, ConicImpCart, VectorImp, RationalBezierImp, SegmentImp, LocusImp, CubicImp, BezierImp, and CircleImp.

double CurveImp::getDist ( double  param, const Coordinate &  p, const KigDocument &  doc  ) const

protected

This function returns the distance between the point with parameter param and point p.

param is allowed to not be between 0 and 1, in which case we consider only the decimal part.

Definition at line 137 of file curve_imp.cc.

double CurveImp::getParam ( const Coordinate &  point, const KigDocument &  doc  ) const

virtual

Reimplemented in LineImp, ArcImp, ConicArcImp, RayImp, VectorImp, SegmentImp, ConicImp, CubicImp, and CircleImp.

Definition at line 149 of file curve_imp.cc.

double CurveImp::getParamofmin ( double  a, double  b, const Coordinate &  p, const KigDocument &  doc  ) const

protected

This function calculates the parameter of the point that realizes the minimum in [a,b] of the distance between the points of the locus and the point of coordinate p, using the golden ration method.

Definition at line 58 of file curve_imp.cc.

virtual const Coordinate CurveImp::getPoint ( double  param, const KigDocument &    ) const

pure virtual

Implemented in ArcImp, LineImp, ConicArcImp, RayImp, RationalBezierImp, VectorImp, SegmentImp, LocusImp, ConicImp, BezierImp, CubicImp, and CircleImp.

const ObjectImpType * CurveImp::stype ( )

static

Returns the ObjectImpType representing the CurveImp type.

Definition at line 27 of file curve_imp.cc.

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

• curve_imp.h
• curve_imp.cc