An Object class that is the base of the line-like Object's: Segment, Line and Ray. More...

Inheritance diagram for AbstractLine:

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Collaboration diagram for AbstractLine:

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Public Member Functions
double	slope () const
	Get the slope of this AbstractLine. More...

const TQString	equationString () const
	Get a string containing the equation of this line in the form "y = a * x + b ".

LineData	data () const
	Get the LineData for this AbstractLine.

bool	equals (const Object &rhs) const
	Returns true if this Object is equal to rhs. More...

Public Member Functions inherited from Curve
Coordinate	attachPoint () const
	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. More...

virtual Curve *	copy () const =0
	Returns a copy of this Object. More...

virtual bool	containsPoint (const Coordinate &p, const KigDocument &) const =0
	Return whether this Curve contains the given point. More...

Public Member Functions inherited from Object
bool	inherits (const ObjectType *t) const
	Returns true if this Object inherits the Object type represented by t. More...

virtual Object *	transform (const Transformation &t) const =0
	Return this Object, transformed by the transformation t.

bool	valid () const
	Returns true if this is a valid Object. More...

virtual const ObjectType *	type () const =0
	Returns the lowermost ObjectType that this object is an instantiation of. More...

Static Public Member Functions
static const ObjectType *	stype ()
	Returns the ObjectType representing the AbstractLine type. More...

Static Public Member Functions inherited from Curve
static const ObjectType *	stype ()
	Returns the ObjectType representing the Curve type.

Static Public Member Functions inherited from Object
static const ObjectType *	stype ()
	The ObjectType representing the base Object class. More...

Detailed Description

An Object class that is the base of the line-like Object's: Segment, Line and Ray.

Member Function Documentation

bool AbstractLine::equals ( const Object & rhs ) const

virtual

Returns true if this Object is equal to rhs.

This function checks whether rhs is of the same Object type, and whether it contains the same data as this Object.

Implements Object.

double AbstractLine::slope ( ) const

Get the slope of this AbstractLine.

. For a line through points a( xa, ya ) and b ( xb, yb ), this means the value ( yb - ya ) / ( xb - xa ).

static const ObjectType* AbstractLine::stype ( )

static

Returns the ObjectType representing the AbstractLine type.