1 | /*
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2 | * Line.hpp
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3 | *
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4 | * Created on: Apr 30, 2010
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5 | * Author: crueger
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6 | */
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7 |
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8 | #ifndef LINE_HPP_
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9 | #define LINE_HPP_
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10 |
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11 | // include config.h
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12 | #ifdef HAVE_CONFIG_H
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13 | #include <config.h>
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14 | #endif
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15 |
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16 |
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17 | #include "LinearAlgebra/Space.hpp"
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18 |
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19 | #include <iosfwd>
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20 | #include <memory>
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21 | #include <vector>
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22 |
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23 | class Vector;
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24 | class Plane;
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25 | class LinePoint;
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26 |
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27 | class Line : public Space
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28 | {
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29 | friend bool operator==(const Line&,const Line&);
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30 | friend class LinePoint;
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31 | public:
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32 | Line(const Vector &_origin, const Vector &_direction);
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33 | Line(const Line& _src);
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34 | virtual ~Line();
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35 |
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36 | Line &operator=(const Line& rhs);
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37 |
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38 | virtual double distance(const Vector &point) const;
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39 | virtual Vector getClosestPoint(const Vector &point) const;
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40 |
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41 | Vector getDirection() const;
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42 | Vector getOrigin() const;
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43 |
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44 | std::vector<Vector> getPointsOnLine() const;
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45 |
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46 | Vector getIntersection(const Line& otherLine) const;
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47 |
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48 | Vector rotateVector(const Vector &rhs, double alpha) const;
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49 | Line rotateLine(const Line &rhs, double alpha) const;
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50 | Plane rotatePlane(const Plane &rhs, double alpha) const;
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51 |
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52 | Plane getOrthogonalPlane(const Vector &origin) const;
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53 |
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54 | std::vector<Vector> getSphereIntersections() const;
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55 |
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56 | LinePoint getLinePoint(const Vector&) const;
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57 | LinePoint posEndpoint() const;
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58 | LinePoint negEndpoint() const;
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59 |
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60 |
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61 |
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62 | private:
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63 | std::auto_ptr<Vector> origin;
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64 | std::auto_ptr<Vector> direction;
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65 | };
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66 |
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67 | bool operator==(const Line&,const Line&);
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68 |
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69 | std::ostream & operator << (std::ostream& ost, const Line &m);
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70 |
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71 | /**
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72 | * Named constructor to make a line through two points
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73 | */
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74 | Line makeLineThrough(const Vector &x1, const Vector &x2);
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75 |
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76 | /**
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77 | * Class for representing points on a line
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78 | * These objects allow comparison of points on the same line as well as specifying the
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79 | * infinite "endpoints" of a line.
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80 | */
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81 | class LinePoint{
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82 | friend class Line;
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83 | friend bool operator==(const LinePoint&, const LinePoint&);
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84 | friend bool operator<(const LinePoint&, const LinePoint&);
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85 | public:
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86 | LinePoint(const LinePoint&);
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87 | LinePoint& operator=(const LinePoint&);
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88 | Vector getPoint() const;
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89 | Line getLine() const;
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90 | bool isInfinite() const;
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91 | bool isPosInfinity() const;
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92 | bool isNegInfinity() const;
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93 |
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94 | private:
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95 | LinePoint(const Line&,double);
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96 | Line line;
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97 | double param;
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98 | };
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99 |
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100 | bool operator==(const LinePoint&, const LinePoint&);
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101 | bool operator<(const LinePoint&, const LinePoint&);
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102 |
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103 | inline bool operator!= (const LinePoint& x, const LinePoint& y) { return !(x==y); }
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104 | inline bool operator> (const LinePoint& x, const LinePoint& y) { return y<x; }
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105 | inline bool operator<= (const LinePoint& x, const LinePoint& y) { return !(y<x); }
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106 | inline bool operator>= (const LinePoint& x, const LinePoint& y) { return !(x<y); }
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107 |
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108 |
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109 | #endif /* LINE_HPP_ */
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