Lemma is an Electromagnetics API
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PolygonalWireAntenna.h 6.0KB

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  1. /* This file is part of Lemma, a geophysical modelling and inversion API */
  2. /* This Source Code Form is subject to the terms of the Mozilla Public
  3. * License, v. 2.0. If a copy of the MPL was not distributed with this
  4. * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
  5. /**
  6. @file
  7. @author Trevor Irons
  8. @date 05/18/2010
  9. @version $Id: PolygonalWireAntenna.h 211 2015-02-27 05:43:26Z tirons $
  10. **/
  11. #ifndef POLYGONALWIREANTENNA_INC
  12. #define POLYGONALWIREANTENNA_INC
  13. #include "DipoleSource.h"
  14. #include "WireAntenna.h"
  15. namespace Lemma {
  16. // ===================================================================
  17. // Class: PolygonalWireAntenna
  18. /// \brief Class representing polygonal wire antennae.
  19. /// \details For EM calculations, dipoles representing this loop are
  20. /// created dynamically, depending on receiver location.
  21. /// @todo enforce minimum dipole moment.
  22. // ===================================================================
  23. class PolygonalWireAntenna : public WireAntenna {
  24. friend std::ostream &operator<<(std::ostream &stream, const PolygonalWireAntenna &ob);
  25. struct ctor_key {};
  26. public:
  27. // ==================== LIFECYCLE =======================
  28. /// Default protected constructor.
  29. explicit PolygonalWireAntenna ( const ctor_key& );
  30. /// Default protected constructor.
  31. PolygonalWireAntenna (const YAML::Node& node, const ctor_key& );
  32. /// Default protected constructor.
  33. virtual ~PolygonalWireAntenna ();
  34. /**
  35. * Declares all memory and returns a new instance.
  36. */
  37. static std::shared_ptr<PolygonalWireAntenna> NewSP();
  38. /// Makes a deep copy of this antenna with all connections except
  39. /// the dipole approximation.
  40. virtual std::shared_ptr<WireAntenna> Clone() const ;
  41. /// Makes a deep copy of this antenna with all connections except
  42. /// the dipole approximation.
  43. virtual std::shared_ptr<PolygonalWireAntenna> ClonePA() const ;
  44. /**
  45. * Uses YAML to serialize this object.
  46. * @return a YAML::Node
  47. */
  48. YAML::Node Serialize() const;
  49. /**
  50. * Constructs an object from a YAML::Node.
  51. */
  52. static std::shared_ptr<PolygonalWireAntenna> DeSerialize(const YAML::Node& node);
  53. // ==================== OPERATORS =======================
  54. // ==================== OPERATIONS =======================
  55. /// Approximates with ungrounded electrical dipoles, such that
  56. /// minDipoleRatio is satisfied.
  57. virtual void ApproximateWithElectricDipoles(const Vector3r &rp);
  58. /** Sets the minimum ratio for dipole moments to be used to
  59. * approximate the loop. A smaller ratio yields a more accurate
  60. * result, but is more expensive. Default is (1/5).
  61. */
  62. void SetMinDipoleRatio(const Real& ratio);
  63. /** Sets the minimum moment for dipole moments to be used to
  64. * approximate the loop.
  65. */
  66. void SetMinDipoleMoment(const Real& m);
  67. /** Sets the minimum moment for dipole moments to be used to
  68. * approximate the loop.
  69. */
  70. void SetMaxDipoleMoment(const Real& m);
  71. // ==================== ACCESS =======================
  72. // ==================== INQUIRY =======================
  73. /** Returns the name of the underlying class, similiar to Python's type */
  74. virtual inline std::string GetName() const {
  75. return CName;
  76. }
  77. protected:
  78. // ==================== DATA MEMBERS =======================
  79. /// minimum ratio of dipole moment to distance to receiver point
  80. Real minDipoleRatio;
  81. /// Maximum dipole moment allowed
  82. Real minDipoleMoment;
  83. /// Maximum dipole moment allowed
  84. Real maxDipoleMoment;
  85. /// appends
  86. void PushXYZDipoles( const Vector3r &step, const Vector3r &cp,
  87. const Vector3r &dir,
  88. std::vector< std::shared_ptr<DipoleSource> > &Dipoles) ;
  89. /// corrects for overstep
  90. void CorrectOverstepXYZDipoles( const Vector3r &step,
  91. const Vector3r &cp,
  92. const Vector3r &dir,
  93. std::vector< std::shared_ptr<DipoleSource> > &Dipoles );
  94. // ==================== OPERATIONS =======================
  95. /// Returns the nearest point on a line segment to another point.
  96. /// if the point is not on the line-segment, return the
  97. /// nearest end-point
  98. /// @param[in] p0, p1 define the line segement
  99. /// @param[in] rp is a point in space. The function returns the
  100. /// closest point on the line to this point.
  101. /// @return The point (Lemma::Vector3r) on the line defined by p0,
  102. /// and p1, closest to rp
  103. Vector3r ClosestPointOnLine(const Vector3r &p0, const Vector3r &p1,
  104. const Vector3r &rp);
  105. /// Interpolates dipoles along line segment defined by p0 and p1.
  106. void InterpolateLineSegment(const Vector3r &p0, const Vector3r &p1,
  107. const Vector3r &rp);
  108. /// List of the dipoles
  109. //std::vector<DipoleSource*> Dipoles;
  110. /// Points that define this loop
  111. //Vector3Xr Points;
  112. private:
  113. Vector3r rRepeat;
  114. static constexpr auto CName = "PolygonalWireAntenna";
  115. }; // ----- end of class PolygonalWireAntenna -----
  116. } // ----- end of Lemma name -----
  117. #endif // ----- #ifndef POLYGONALWIREANTENNA_INC -----