A line in 2-D. More...
#include <Line_2.h>
Public Types | |
typedef T | Number |
The number type. | |
typedef SegmentMath< 2, T > | Segment |
The segment upon which this line is built. | |
typedef Segment::Point | Point |
The point type. | |
Public Member Functions | |
Constructors etc. | |
Line_2 () | |
Default constructor. Uninitialized memory. | |
Line_2 (const Point &source, const Point &target) | |
Construct from points. | |
void | make (const Point &source, const Point &target) |
Make from points. | |
Line_2 (const Segment &segment) | |
Construct from a segment. | |
Line_2 (const geom::Segment< 2, Number > &segment) | |
Construct from a Segment<2,Number> . | |
Line_2 (const Line_2 &other) | |
Copy constructor. | |
Line_2 & | operator= (const Line_2 &other) |
Assignment operator. | |
~Line_2 () | |
Trivial destructor. | |
Accesors. | |
const Point & | getPointOn () const |
Return a point on the line. | |
const Point & | getTangent () const |
Return the tangent to the line. | |
const Point & | getNormal () const |
Return the normal to the line. | |
const Segment & | getSegment () const |
Return the segment on which the line is built. | |
Mathematical operations. | |
Line_2 & | operator+= (const Point &p) |
Translate the line by p . | |
Line_2 & | operator-= (const Point &p) |
Translate the line by -p . | |
Number | computeSignedDistance (const Point &p) const |
Distance to the line. | |
Number | computeSignedDistanceAndClosestPoint (const Point &p, Point *cp) const |
Distance and closest point to the line. | |
void | computeIntersection (Point p1, Point p2, Point *intersectionPoint) const |
Compute the point where the line through p1 and p2 intersects this line. | |
Related Functions | |
(Note that these are not member functions.) | |
template<typename T > | |
const Line_2< T > & | operator+ (const Line_2< T > &x) |
Unary positive operator. | |
template<typename T > | |
Line_2< T > | operator- (const Line_2< T > &x) |
Unary negative operator. | |
template<typename T > | |
std::istream & | operator>> (std::istream &in, Line_2< T > &x) |
Read a line. | |
template<typename T > | |
std::ostream & | operator<< (std::ostream &out, const Line_2< T > &x) |
Write a line. | |
template<typename T > | |
bool | operator== (const Line_2< T > &a, const Line_2< T > &b) |
Return true if the lines are equal. | |
template<typename T > | |
bool | operator!= (const Line_2< T > &a, const Line_2< T > &b) |
Return true if the lines are not equal. |
A line in 2-D.
T | is the number type. By default it is double. |
Return true if the lines are not equal.
Unary positive operator.
Unary negative operator.
References Line_2< T >::getSegment().
std::ostream & operator<< | ( | std::ostream & | out, | |
const Line_2< T > & | x | |||
) | [related] |
Write a line.
References Line_2< T >::getSegment().
Return true if the lines are equal.
References Line_2< T >::getSegment().
std::istream & operator>> | ( | std::istream & | in, | |
Line_2< T > & | x | |||
) | [related] |
Read a line.