#include <nray.h>
Public Member Functions | |
NRay (unsigned length) | |
Creates a new ray all of whose coordinates are initialised to zero. | |
NRay (const NVector< NLargeInteger > &cloneMe) | |
Creates a new ray that is a clone of the given ray. | |
virtual NVector< NLargeInteger > * | clone () const |
Makes a newly allocated clone of this vector. | |
virtual void | negate () |
Negates every element of this vector. | |
void | scaleDown () |
Scales this vector down by the greatest common divisor of all its elements. |
Such a ray is a half-line beginning at the origin and is represented by a point it passes through whose coordinates are all integers.
Note that scalar multiples of a ray in fact represent the same ray.
regina::NRay::NRay | ( | unsigned | length | ) | [inline] |
Creates a new ray all of whose coordinates are initialised to zero.
length | the number of elements in the new vector. |
regina::NRay::NRay | ( | const NVector< NLargeInteger > & | cloneMe | ) | [inline] |
Creates a new ray that is a clone of the given ray.
cloneMe | the ray to clone. |
NVector< NLargeInteger > * regina::NRay::clone | ( | ) | const [inline, virtual] |
Makes a newly allocated clone of this vector.
The clone will be of the same subclass of NVector as this vector.
Reimplemented from regina::NVectorDense< NLargeInteger >.
Reimplemented in regina::NAngleStructureVector, regina::NNormalSurfaceVectorANStandard, regina::NNormalSurfaceVectorQuad, and regina::NNormalSurfaceVectorStandard.
void regina::NRay::negate | ( | ) | [inline, virtual] |
void regina::NRay::scaleDown | ( | ) |
Scales this vector down by the greatest common divisor of all its elements.
The resulting vector will be the smallest multiple of the original that maintains integral entries, and these entries will have the same signs as the originals.
This routine thus reduces a ray to its smallest possible representation.
This routine poses no problem for vectors containing infinite elements; such elements are simply ignored and left at infinity.