1 | /* |
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2 | * ---------------------------------------------------------------------- |
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3 | * Rappture::FieldTri2D |
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4 | * This is a continuous, linear function defined by a series of |
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5 | * points on a 2D unstructured mesh. It's a scalar field defined |
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6 | * in 2D space. |
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7 | * |
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8 | * ====================================================================== |
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9 | * AUTHOR: Michael McLennan, Purdue University |
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10 | * Copyright (c) 2004-2012 HUBzero Foundation, LLC |
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11 | * |
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12 | * See the file "license.terms" for information on usage and |
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13 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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14 | * ====================================================================== |
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15 | */ |
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16 | #include "RpFieldTri2D.h" |
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17 | |
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18 | using namespace Rappture; |
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19 | |
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20 | FieldTri2D::FieldTri2D() |
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21 | : _valuelist(), |
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22 | _vmin(NAN), |
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23 | _vmax(NAN), |
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24 | _meshPtr(NULL), |
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25 | _counter(0) |
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26 | { |
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27 | } |
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28 | |
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29 | FieldTri2D::FieldTri2D(const MeshTri2D& grid) |
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30 | : _valuelist(), |
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31 | _vmin(NAN), |
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32 | _vmax(NAN), |
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33 | _meshPtr(NULL), |
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34 | _counter(0) |
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35 | { |
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36 | _meshPtr = Ptr<MeshTri2D>( new MeshTri2D(grid) ); |
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37 | _valuelist.reserve(grid.sizeNodes()); |
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38 | } |
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39 | |
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40 | FieldTri2D::FieldTri2D(const FieldTri2D& field) |
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41 | : _valuelist(field._valuelist), |
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42 | _vmin(field._vmin), |
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43 | _vmax(field._vmax), |
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44 | _meshPtr(field._meshPtr), |
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45 | _counter(field._counter) |
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46 | { |
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47 | } |
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48 | |
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49 | FieldTri2D& |
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50 | FieldTri2D::operator=(const FieldTri2D& field) |
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51 | { |
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52 | _valuelist = field._valuelist; |
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53 | _vmin = field._vmin; |
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54 | _vmax = field._vmax; |
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55 | _meshPtr = field._meshPtr; |
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56 | _counter = field._counter; |
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57 | return *this; |
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58 | } |
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59 | |
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60 | FieldTri2D::~FieldTri2D() |
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61 | { |
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62 | } |
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63 | |
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64 | int |
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65 | FieldTri2D::size() const |
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66 | { |
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67 | return _meshPtr->sizeNodes(); |
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68 | } |
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69 | |
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70 | Node2D& |
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71 | FieldTri2D::atNode(int pos) |
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72 | { |
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73 | static Node2D null(0.0,0.0); |
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74 | |
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75 | if (!_meshPtr.isNull()) { |
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76 | return _meshPtr->atNode(pos); |
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77 | } |
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78 | return null; |
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79 | } |
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80 | |
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81 | double |
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82 | FieldTri2D::rangeMin(Axis which) const |
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83 | { |
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84 | if (!_meshPtr.isNull()) { |
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85 | return _meshPtr->rangeMin(which); |
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86 | } |
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87 | return 0.0; |
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88 | } |
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89 | |
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90 | double |
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91 | FieldTri2D::rangeMax(Axis which) const |
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92 | { |
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93 | if (!_meshPtr.isNull()) { |
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94 | return _meshPtr->rangeMax(which); |
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95 | } |
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96 | return 0.0; |
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97 | } |
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98 | |
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99 | FieldTri2D& |
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100 | FieldTri2D::define(int nodeId, double f) |
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101 | { |
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102 | if (_valuelist.size() < (unsigned int)(nodeId+1)) { |
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103 | _valuelist.resize((unsigned int)(nodeId+1), NAN); |
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104 | } |
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105 | _valuelist[nodeId] = f; |
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106 | |
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107 | if (isnan(_vmin) || isnan(_vmax)) { |
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108 | _vmin = _vmax = f; |
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109 | } else { |
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110 | if (f < _vmin) { _vmin = f; } |
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111 | if (f > _vmax) { _vmax = f; } |
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112 | } |
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113 | return *this; |
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114 | } |
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115 | |
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116 | double |
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117 | FieldTri2D::value(double x, double y, double outside) const |
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118 | { |
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119 | if (!_meshPtr.isNull()) { |
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120 | Node2D node(x,y); |
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121 | CellTri2D cell = _meshPtr->locate(node); |
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122 | |
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123 | if (!cell.isNull()) { |
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124 | double phi[3]; |
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125 | cell.barycentrics(node, phi); |
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126 | |
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127 | int n0 = cell.nodeId(0); |
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128 | int n1 = cell.nodeId(1); |
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129 | int n2 = cell.nodeId(2); |
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130 | |
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131 | return phi[0]*_valuelist[n0] |
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132 | + phi[1]*_valuelist[n1] |
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133 | + phi[2]*_valuelist[n2]; |
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134 | } |
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135 | } |
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136 | return outside; |
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137 | } |
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138 | |
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139 | double |
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140 | FieldTri2D::valueMin() const |
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141 | { |
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142 | return _vmin; |
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143 | } |
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144 | |
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145 | double |
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146 | FieldTri2D::valueMax() const |
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147 | { |
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148 | return _vmax; |
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149 | } |
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