source: src/Line.hpp@ 400170

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Last change on this file since 400170 was 6256f5, checked in by Tillmann Crueger <crueger@…>, 15 years ago

Added a class that allows specifying points on a line
  • Property mode set to 100644
File size: 2.3 KB
Line 
1/*
2 * Line.hpp
3 *
4 * Created on: Apr 30, 2010
5 * Author: crueger
6 */
7
8#ifndef LINE_HPP_
9#define LINE_HPP_
10
11#include "Space.hpp"
12
13#include <memory>
14#include <vector>
15
16class Vector;
17class Plane;
18class LinePoint;
19
20class Line : public Space
21{
22 friend bool operator==(const Line&,const Line&);
23 friend class LinePoint;
24public:
25 Line(const Vector &_origin, const Vector &_direction);
26 Line(const Line& _src);
27 virtual ~Line();
28
29 Line &operator=(const Line& rhs);
30
31 virtual double distance(const Vector &point) const;
32 virtual Vector getClosestPoint(const Vector &point) const;
33
34 Vector getDirection() const;
35 Vector getOrigin() const;
36
37 std::vector<Vector> getPointsOnLine() const;
38
39 Vector getIntersection(const Line& otherLine) const;
40
41 Vector rotateVector(const Vector &rhs, double alpha) const;
42
43 Plane getOrthogonalPlane(const Vector &origin) const;
44
45 std::vector<Vector> getSphereIntersections() const;
46
47 LinePoint getLinePoint(const Vector&) const;
48 LinePoint posEndpoint() const;
49 LinePoint negEndpoint() const;
50
51private:
52 std::auto_ptr<Vector> origin;
53 std::auto_ptr<Vector> direction;
54};
55
56bool operator==(const Line&,const Line&);
57
58/**
59 * Named constructor to make a line through two points
60 */
61Line makeLineThrough(const Vector &x1, const Vector &x2);
62
63/**
64 * Class for representing points on a line
65 * These objects allow comparison of points on the same line as well as specifying the
66 * infinite "endpoints" of a line.
67 */
68class LinePoint{
69 friend class Line;
70 friend bool operator==(const LinePoint&, const LinePoint&);
71 friend bool operator<(const LinePoint&, const LinePoint&);
72public:
73 LinePoint(const LinePoint&);
74 LinePoint& operator=(const LinePoint&);
75 Vector getPoint() const;
76 Line getLine() const;
77 bool isInfinite() const;
78 bool isPosInfinity() const;
79 bool isNegInfinity() const;
80
81private:
82 LinePoint(const Line&,double);
83 Line line;
84 double param;
85};
86
87bool operator==(const LinePoint&, const LinePoint&);
88bool operator<(const LinePoint&, const LinePoint&);
89
90inline bool operator!= (const LinePoint& x, const LinePoint& y) { return !(x==y); }
91inline bool operator> (const LinePoint& x, const LinePoint& y) { return y<x; }
92inline bool operator<= (const LinePoint& x, const LinePoint& y) { return !(y<x); }
93inline bool operator>= (const LinePoint& x, const LinePoint& y) { return !(x<y); }
94
95
96#endif /* LINE_HPP_ */
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