1 | /*
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2 | * Shape_impl.hpp
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3 | *
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4 | * Created on: Jun 18, 2010
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5 | * Author: crueger
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6 | */
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7 |
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8 | #ifndef SHAPE_IMPL_HPP_
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9 | #define SHAPE_IMPL_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 <vector>
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18 |
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19 | #include "Shapes/Shape.hpp"
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20 | #include "Shapes/ShapeExceptions.hpp"
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21 | #include "LinearAlgebra/Line.hpp"
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22 | #include "LinearAlgebra/LineSegment.hpp"
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23 | #include "LinearAlgebra/LineSegmentSet.hpp"
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24 | #include "LinearAlgebra/Vector.hpp"
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25 |
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26 |
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27 | class Shape_impl {
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28 | public:
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29 | Shape_impl(){};
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30 | virtual ~Shape_impl(){};
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31 | virtual bool isInside(const Vector &point)=0;
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32 | virtual bool isOnSurface(const Vector &point)=0;
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33 | virtual Vector getNormal(const Vector &point) throw(NotOnSurfaceException)=0;
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34 | virtual LineSegmentSet getLineIntersections(const Line&)=0;
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35 | virtual std::string toString()=0;
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36 | virtual std::vector<Vector> getHomogeneousPointsOnSurface(const size_t N) const=0;
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37 | };
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38 |
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39 | class Everywhere_impl : public Shape_impl {
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40 | public:
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41 | virtual bool isInside(const Vector &point){
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42 | return true;
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43 | }
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44 | virtual bool isOnSurface(const Vector &point){
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45 | return false;
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46 | }
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47 | virtual Vector getNormal(const Vector &point) throw(NotOnSurfaceException){
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48 | throw NotOnSurfaceException() << ShapeVector(&point);
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49 | }
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50 | virtual LineSegmentSet getLineIntersections(const Line &line){
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51 | LineSegmentSet res(line);
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52 | res.insert(LineSegment(line.negEndpoint(),line.posEndpoint()));
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53 | return res;
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54 | }
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55 | virtual std::string toString(){
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56 | return "Everywhere()";
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57 | }
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58 | virtual std::vector<Vector> getHomogeneousPointsOnSurface(const size_t N) const {
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59 | std::vector<Vector> PointsOnSurface;
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60 | return PointsOnSurface;
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61 | }
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62 | };
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63 |
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64 | class Nowhere_impl : public Shape_impl {
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65 | virtual bool isInside(const Vector &point){
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66 | return false;
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67 | }
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68 | virtual bool isOnSurface(const Vector &point){
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69 | return false;
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70 | }
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71 | virtual Vector getNormal(const Vector &point) throw(NotOnSurfaceException){
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72 | throw NotOnSurfaceException() << ShapeVector(&point);
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73 | }
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74 | virtual LineSegmentSet getLineIntersections(const Line &line){
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75 | return LineSegmentSet(line);
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76 | }
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77 | virtual std::string toString(){
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78 | return "Nowhere()";
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79 | }
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80 | virtual std::vector<Vector> getHomogeneousPointsOnSurface(const size_t N) const {
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81 | std::vector<Vector> PointsOnSurface;
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82 | return PointsOnSurface;
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83 | }
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84 | };
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85 |
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86 | class AndShape_impl : public Shape_impl {
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87 | public:
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88 | AndShape_impl(const Shape::impl_ptr&, const Shape::impl_ptr&);
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89 | virtual ~AndShape_impl();
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90 | virtual bool isInside(const Vector &point);
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91 | virtual bool isOnSurface(const Vector &point);
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92 | virtual Vector getNormal(const Vector &point) throw(NotOnSurfaceException);
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93 | virtual LineSegmentSet getLineIntersections(const Line&);
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94 | virtual std::string toString();
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95 | virtual std::vector<Vector> getHomogeneousPointsOnSurface(const size_t N) const;
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96 | private:
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97 | Shape::impl_ptr lhs;
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98 | Shape::impl_ptr rhs;
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99 | };
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100 |
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101 | class OrShape_impl : public Shape_impl {
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102 | public:
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103 | OrShape_impl(const Shape::impl_ptr&, const Shape::impl_ptr&);
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104 | virtual ~OrShape_impl();
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105 | virtual bool isInside(const Vector &point);
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106 | virtual bool isOnSurface(const Vector &point);
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107 | virtual Vector getNormal(const Vector &point) throw(NotOnSurfaceException);
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108 | virtual LineSegmentSet getLineIntersections(const Line&);
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109 | virtual std::string toString();
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110 | virtual std::vector<Vector> getHomogeneousPointsOnSurface(const size_t N) const;
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111 | private:
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112 | Shape::impl_ptr lhs;
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113 | Shape::impl_ptr rhs;
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114 | };
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115 |
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116 | class NotShape_impl : public Shape_impl {
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117 | public:
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118 | NotShape_impl(const Shape::impl_ptr&);
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119 | virtual ~NotShape_impl();
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120 | virtual bool isInside(const Vector &point);
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121 | virtual bool isOnSurface(const Vector &point);
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122 | virtual Vector getNormal(const Vector &point) throw(NotOnSurfaceException);
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123 | virtual LineSegmentSet getLineIntersections(const Line&);
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124 | virtual std::string toString();
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125 | virtual std::vector<Vector> getHomogeneousPointsOnSurface(const size_t N) const;
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126 | private:
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127 | Shape::impl_ptr arg;
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128 | };
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129 |
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130 | Shape::impl_ptr getShapeImpl(const Shape&);
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131 |
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132 | #endif /* SHAPE_IMPL_HPP_ */
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