1 | //
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2 | // C++ Interface: PlotHelper
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3 | //
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4 | // Description:
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5 | // A small helper class to handle direction coordinate in asapplotter
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6 | //
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7 | // Author: Kana Sugimoto <kana.sugi@nao.ac.jp>, (C) 2012
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8 | //
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9 | // Copyright: See COPYING file that comes with this distribution
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10 | //
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11 | //
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12 |
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13 | // casacore
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14 | #include <casa/Arrays/Vector.h>
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15 | #include <casa/Quanta/Quantum.h>
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16 | #include <casa/Quanta/QuantumHolder.h>
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17 | #include <measures/Measures/MDirection.h>
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18 | #include <casa/Logging/LogIO.h>
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19 |
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20 | #include "PlotHelper.h"
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21 |
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22 | //#define KS_DEBUG
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23 |
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24 | using namespace std ;
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25 | using namespace casa ;
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26 | using namespace asap ;
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27 |
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28 | namespace asap {
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29 |
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30 | PlotHelper::PlotHelper() : dircoord_(0)
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31 | {
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32 | #ifdef KS_DEBUG
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33 | cout << "Default constructor nrow = " << data_.nrow() << endl;
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34 | #endif
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35 | };
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36 |
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37 | PlotHelper::PlotHelper( const ScantableWrapper &s) : dircoord_(0)
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38 | {
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39 | #ifdef KS_DEBUG
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40 | cout << "Constructing PlotHelper with scantable wrapper" << endl;
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41 | #endif
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42 | setScantable(s);
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43 | };
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44 |
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45 | PlotHelper::~PlotHelper(){
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46 | #ifdef KS_DEBUG
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47 | cout << "Called PlotHelper destructor" << endl;
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48 | #endif
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49 | if (dircoord_){
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50 | #ifdef KS_DEBUG
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51 | cout << "Destructing dircoord_" << endl;
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52 | #endif
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53 | delete dircoord_;
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54 | dircoord_ = 0;
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55 | }
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56 | };
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57 |
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58 | void PlotHelper::setScantable( const ScantableWrapper &s )
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59 | {
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60 | #ifdef KS_DEBUG
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61 | cout << "Setting scantable" << endl;
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62 | #endif
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63 | data_ = s ;
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64 | };
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65 |
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66 | // void PlotHelper::setGridParam(const int nx, const int ny, const string cellx, const string celly, string center, const string projection){
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67 | // // Value check of nx and ny
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68 | // if (nx < 1)
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69 | // throw(AipsError("nx should be > 0"));
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70 | // if (ny < 1)
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71 | // throw(AipsError("ny should be > 0"));
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72 | // // Destroy old coord
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73 | // if (dircoord_){
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74 | // cout << "Destructing dircoord_" << endl;
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75 | // delete dircoord_;
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76 | // dircoord_ = 0;
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77 | // }
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78 |
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79 | // //
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80 | // Double incX, incY;
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81 | // Double centX, centY;
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82 | // MDirection::Types mdt;
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83 | // // projection
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84 | // Projection::Type projType(Projection::type(String(projname)));
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85 | // ///
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86 | // incX = cellx;
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87 | // incY = celly;
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88 | // centX = centx;
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89 | // centY = centy;
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90 | // MDirection::getType(mdt, String(epoch));
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91 | // ///
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92 | // // Get map extent
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93 | // Double xmax, xmin, ymax, ymin;
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94 | // ROArrayColumn<Double> dirCol;
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95 | // MDirection::Types stdt;
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96 | // const bool stset = (data_ ? true : false);
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97 |
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98 | // if (stset) {
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99 | // dirCol_.attach( data_, "DIRECTION" );
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100 | // Matrix<Double> direction = dirCol.getColumn();
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101 | // minMax(xmin, xmax, direction.row( 0 ));
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102 | // minMax(ymin, ymax, direction.row( 1 ));
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103 | // if (!MDirection::getType(stdt, data_.getDirectionRefString()))
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104 | // throw AipsError("Failed to get direction reference from scantable.");
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105 | // }
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106 | // // center
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107 | // if (center.size() == 0){
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108 | // if (!stset)
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109 | // throw AipsError("Scantable is not set. Could not resolve map center.");
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110 | // cenX = 0.5 * (xmin + xmax);
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111 | // cenY = 0.5 * (ymin + ymax);
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112 | // mdt = stdt;
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113 | // } else {
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114 | // if (!MDirection::getType(mdt,center))
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115 | // throw AipsError("Invalid direction reference in center");
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116 | // if (stset && mdt != stdt)
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117 | // throw AipsError("Direction reference of center should be the same as input scantable");
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118 | // MDirection centdir;
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119 | // centdir.setRefString(String(center));
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120 | // ///
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121 | // Vector<Double> centrad;
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122 | // centrad = centdir.getAngle("rad").getValue();
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123 | // cenX = centrad[0];
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124 | // cenY = centrad[1];
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125 | // // rotaion
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126 | // if (stset) {
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127 | // Double rotnum = round(abs(cenX - )/(C::))
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128 | // }
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129 | // }
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130 | // // cell
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131 | // Quantum<Double> qcellx, qcelly;
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132 | // if (cellx.size() == 0 && celly.size() == 0){
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133 | // // Need resolution
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134 | // if (!stset)
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135 | // throw AipsError("Scantable is not set. Could not resolve cell size.");
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136 | // } else {
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137 | // if (cellx.size() != 0){
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138 | // readQuantity(qcellx, String(cellx));
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139 | // qcellx.convert("rad");
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140 | // } else if (celly.size() == 0) {
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141 | // celly = cellx;
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142 | //
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143 | // }
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144 |
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145 | void PlotHelper::setGridParamVal(const int nx, const int ny, const double cellx, const double celly, const double centx, const double centy, const string epoch, const string projname){
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146 | // Value check of nx and ny
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147 | if (nx < 1)
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148 | throw(AipsError("nx should be > 0"));
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149 | if (ny < 1)
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150 | throw(AipsError("ny should be > 0"));
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151 | // Destroy old coord
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152 | if (dircoord_){
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153 | #ifdef KS_DEBUG
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154 | cout << "Destructing dircoord_" << endl;
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155 | #endif
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156 | delete dircoord_;
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157 | dircoord_ = 0;
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158 | }
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159 |
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160 | // center (in rad)
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161 | Double centX(centx), centY(centy);
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162 | // cell size (in rad)
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163 | Double incX(cellx), incY(celly);
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164 | // epoch
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165 | MDirection::Types mdt;
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166 | MDirection::getType(mdt, String(epoch));
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167 | // projection
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168 | Projection::Type projType(Projection::type(String(projname)));
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169 |
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170 | Matrix<Double> xform(2,2) ;
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171 | xform = 0.0 ;
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172 | xform.diagonal() = 1.0 ;
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173 | dircoord_ = new DirectionCoordinate(mdt, projType,
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174 | centX, centY, incX, incY,
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175 | xform,
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176 | 0.5*Double(nx),
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177 | 0.5*Double(ny)) ; // pixel at center
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178 | // 0.5*Double(nx-1),
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179 | // 0.5*Double(ny-1)) ; // pixel at grid
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180 | #ifdef KS_DEBUG
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181 | {//Debug outputs
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182 | cout << "Direction coordinate is set: " << endl;
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183 | Vector<String> units = dircoord_->worldAxisUnits();
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184 | Vector<Double> refv = dircoord_->referenceValue();
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185 | cout <<"Reference: " << MDirection::showType(dircoord_->directionType()) << " " << refv[0] << units[0] << " " << refv[1] << units[1] << endl;
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186 | Vector<Double> refpix = dircoord_->referencePixel();
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187 | cout <<"Reference Pixel: [" << refpix[0] << ", " << refpix[1] << "]" << endl;
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188 | Vector<Double> inc = dircoord_->increment();
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189 | cout <<"Increments: [" << inc[0] << ", " << inc[1] << "]" << endl;
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190 | cout <<"Projection: " << dircoord_->projection().name() << endl;
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191 | }
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192 | #endif
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193 | };
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194 |
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195 | vector<double> PlotHelper::getGridPixel(const int whichrow){
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196 | if (data_.nrow() < 1)
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197 | throw AipsError("Scantable is not set. Could not get direction.");
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198 | else if (whichrow > int(data_.nrow()) - 1)
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199 | throw AipsError("Row index out of range.");
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200 | if (!dircoord_)
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201 | throw AipsError("Direction coordinate is not defined.");
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202 |
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203 | Vector<Double> pixel;
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204 | MDirection world;
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205 | vector<double> outvec;
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206 | world = data_.getCP()->getDirection(whichrow);
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207 | #ifdef KS_DEBUG
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208 | cout << "searching pixel position (world = " << data_.getCP()->getDirectionString(whichrow) << " = [" << world.getAngle("rad").getValue()[0] << ", " << world.getAngle("rad").getValue()[1] << "])" << endl;
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209 | #endif
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210 | dircoord_->toPixel(pixel, world);
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211 | #ifdef KS_DEBUG
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212 | cout << "got pixel = [" << pixel[0] << ", " << pixel[1] << "]" << endl;
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213 | #endif
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214 | // convert pixel to std vector
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215 | pixel.tovector(outvec);
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216 | return outvec;
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217 | };
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218 |
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219 | } //namespace asap
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