Ray Class Reference

An Object representing a ray. More...

Inheritance diagram for Ray:

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Collaboration diagram for Ray:

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List of all members.

Public Member Functions
	Ray (const Coordinate &a, const Coordinate &b)
	Construct a ray, starting at a, and going through b.
	Ray (const LineData &d)
	Construct a ray from a LineData.
Object *	transform (const Transformation &) const
	Return this Object, transformed by the transformation t.
Ray *	copy () const
	Returns a copy of this Object.
const ObjectType *	type () const
	Returns the lowermost ObjectType that this object is an instantiation of.
bool	containsPoint (const Coordinate &p, const KigDocument &doc) const
	Return whether this Curve contains the given point.
Static Public Member Functions
static const ObjectType *	stype ()
	Returns the ObjectType representing the Ray type.

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Detailed Description

An Object representing a ray.

This means half of a line, it is infinite in one direction, but ends at a certain point in the other direction..

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Member Function Documentation

static const ObjectType* Ray::stype

(

)

[static]

Returns the ObjectType representing the Ray type.

Reimplemented from AbstractLine.

Ray* Ray::copy

(

)

const [virtual]

Returns a copy of this Object.

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

Implements Curve.

const ObjectType* Ray::type

(

)

const [virtual]

Returns the lowermost ObjectType that this object is an instantiation of.

E.g. if you want to get a string containing the internal name of the type of an object, you can do:

 tn = object.type().internalName()

Implements Object.

bool Ray::containsPoint	(	const Coordinate &	p,
		const KigDocument &
	)			const [virtual]

Return whether this Curve contains the given point.

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

Implements Curve.