1 | #include <iostream> |
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2 | #include <string.h> |
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3 | #include <duchamp/duchamp.hh> |
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4 | #include <duchamp/FitsIO/DuchampBeam.hh> |
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5 | #include <duchamp/FitsIO/Beam.hh> |
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6 | #include <duchamp/param.hh> |
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7 | #include <sstream> |
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8 | |
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9 | namespace duchamp |
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10 | { |
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11 | |
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12 | DuchampBeam::DuchampBeam(): |
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13 | Beam() |
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14 | { |
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15 | this->itsOrigin = EMPTY; |
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16 | } |
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17 | |
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18 | DuchampBeam::DuchampBeam(float maj, float min, float pa): |
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19 | Beam(maj,min,pa) |
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20 | { |
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21 | this->itsOrigin = EMPTY; |
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22 | } |
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23 | |
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24 | DuchampBeam::DuchampBeam(const Beam &b): |
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25 | Beam(b) |
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26 | { |
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27 | this->itsOrigin = EMPTY; |
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28 | } |
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29 | |
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30 | DuchampBeam::DuchampBeam(const DuchampBeam &b): |
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31 | Beam(b) |
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32 | { |
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33 | operator=(b); |
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34 | } |
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35 | |
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36 | DuchampBeam& DuchampBeam::operator=(const DuchampBeam &b) |
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37 | { |
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38 | ((Beam &) *this) = b; |
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39 | this->itsOrigin = b.itsOrigin; |
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40 | return *this; |
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41 | } |
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42 | |
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43 | void DuchampBeam::define(float maj, float min, float pa, BEAM_ORIGIN origin) |
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44 | { |
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45 | this->Beam::define(maj,min,pa); |
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46 | this->itsOrigin = origin; |
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47 | } |
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48 | |
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49 | void DuchampBeam::setFWHM(float fwhm, BEAM_ORIGIN origin) |
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50 | { |
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51 | this->Beam::setFWHM(fwhm); |
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52 | this->itsOrigin = origin; |
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53 | } |
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54 | |
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55 | void DuchampBeam::setArea(float area, BEAM_ORIGIN origin) |
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56 | { |
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57 | this->Beam::setArea(area); |
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58 | this->itsOrigin = origin; |
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59 | } |
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60 | |
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61 | void DuchampBeam::empty() |
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62 | { |
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63 | this->itsMaj = this->itsMin = this->itsPA = this->itsArea = 0.; |
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64 | this->itsOrigin = EMPTY; |
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65 | } |
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66 | |
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67 | std::string DuchampBeam::originString() |
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68 | { |
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69 | std::string output; |
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70 | switch(this->itsOrigin) |
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71 | { |
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72 | case HEADER: |
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73 | output="HEADER"; |
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74 | break; |
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75 | case PARAM: |
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76 | output="PARAM"; |
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77 | break; |
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78 | case EMPTY: |
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79 | output="EMPTY"; |
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80 | break; |
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81 | default: |
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82 | output="ERROR"; |
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83 | break; |
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84 | } |
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85 | return output; |
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86 | |
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87 | } |
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88 | |
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89 | void DuchampBeam::define(Param &par, bool warn) |
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90 | { |
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91 | std::string paramName; |
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92 | bool doWarning=warn; |
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93 | if(par.getBeamFWHM()>0.){ |
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94 | this->setFWHM(par.getBeamFWHM(),PARAM); |
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95 | par.setBeamSize(this->itsArea); |
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96 | paramName = "beamFWHM"; |
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97 | par.setBeamAsUsed(*this); |
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98 | } |
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99 | else if(par.getBeamSize()>0.){ |
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100 | this->setArea(par.getBeamSize(),PARAM); |
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101 | paramName = "beamArea"; |
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102 | par.setBeamAsUsed(*this); |
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103 | } |
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104 | else{ |
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105 | this->empty(); |
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106 | doWarning = false; |
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107 | } |
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108 | |
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109 | if(doWarning){ |
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110 | std::stringstream errmsg; |
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111 | errmsg << "Header beam keywords not present. Using parameter "<< paramName <<" to determine size of beam.\n"; |
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112 | duchampWarning("Beam definition",errmsg.str()); |
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113 | } |
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114 | } |
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115 | |
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116 | |
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117 | void DuchampBeam::readFromFITS(fitsfile *fptr, Param &par, float pixelScale) // read from file a la headerIO.cc |
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118 | { |
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119 | char *comment = new char[80]; |
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120 | std::string keyword[3]={"BMAJ","BMIN","BPA"}; |
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121 | float bmaj,bmin,bpa; |
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122 | |
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123 | // Read the Keywords. If they are present, read the |
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124 | // others, and calculate the beam size. |
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125 | // If it is not, give warning and set beam size to nominal value. |
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126 | int bstatus[3]={0,0,0}; |
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127 | fits_read_key(fptr, TFLOAT, (char *)keyword[0].c_str(), &bmaj, comment, &bstatus[0]); |
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128 | fits_read_key(fptr, TFLOAT, (char *)keyword[1].c_str(), &bmin, comment, &bstatus[1]); |
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129 | fits_read_key(fptr, TFLOAT, (char *)keyword[2].c_str(), &bpa, comment, &bstatus[2]); |
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130 | |
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131 | if(bstatus[0]||bstatus[1]||bstatus[2]){ // error |
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132 | this->define(par); |
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133 | } |
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134 | else{ // all keywords present |
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135 | this->define(bmaj/pixelScale, bmin/pixelScale, bpa, HEADER); |
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136 | par.setBeamAsUsed(*this); |
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137 | } |
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138 | } |
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139 | |
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140 | |
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141 | void DuchampBeam::writeToFITS(fitsfile *fptr) // write to file, but only if itsOrigin==HEADER. Use cfitsio commands directly. |
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142 | { |
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143 | |
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144 | if(this->itsOrigin == HEADER){ |
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145 | char *keyword = new char[FLEN_KEYWORD]; |
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146 | int status = 0; |
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147 | strcpy(keyword,"BMAJ"); |
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148 | if (fits_update_key(fptr, TFLOAT, keyword, &this->itsMaj, NULL, &status)){ |
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149 | duchampError("Writing beam","Error writing beam info:"); |
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150 | fits_report_error(stderr, status); |
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151 | } |
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152 | status = 0; |
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153 | strcpy(keyword,"BMIN"); |
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154 | if (fits_update_key(fptr, TFLOAT, keyword, &this->itsMin, NULL, &status)){ |
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155 | duchampError("Writing beam","Error writing beam info:"); |
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156 | fits_report_error(stderr, status); |
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157 | } |
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158 | status = 0; |
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159 | strcpy(keyword,"BPA"); |
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160 | if (fits_update_key(fptr, TFLOAT, keyword, &this->itsPA, NULL, &status)){ |
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161 | duchampError("Writing beam","Error writing beam info:"); |
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162 | fits_report_error(stderr, status); |
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163 | } |
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164 | } |
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165 | } |
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166 | |
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167 | |
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168 | |
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169 | } |
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170 | |
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