1 | // ----------------------------------------------------------------------- |
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2 | // Object2D.hh: Definition of Object2D, a class to hold pixel |
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3 | // information for a 2-dimensional object. |
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4 | // ----------------------------------------------------------------------- |
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5 | // Copyright (C) 2006, Matthew Whiting, ATNF |
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6 | // |
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7 | // This program is free software; you can redistribute it and/or modify it |
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8 | // under the terms of the GNU General Public License as published by the |
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9 | // Free Software Foundation; either version 2 of the License, or (at your |
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10 | // option) any later version. |
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11 | // |
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12 | // Duchamp is distributed in the hope that it will be useful, but WITHOUT |
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13 | // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 | // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 | // for more details. |
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16 | // |
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17 | // You should have received a copy of the GNU General Public License |
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18 | // along with Duchamp; if not, write to the Free Software Foundation, |
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19 | // Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA |
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20 | // |
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21 | // Correspondence concerning Duchamp may be directed to: |
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22 | // Internet email: Matthew.Whiting [at] atnf.csiro.au |
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23 | // Postal address: Dr. Matthew Whiting |
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24 | // Australia Telescope National Facility, CSIRO |
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25 | // PO Box 76 |
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26 | // Epping NSW 1710 |
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27 | // AUSTRALIA |
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28 | // ----------------------------------------------------------------------- |
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29 | #ifndef OBJECT2D_H |
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30 | #define OBJECT2D_H |
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31 | |
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32 | #include <iostream> |
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33 | #include <algorithm> |
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34 | #include <vector> |
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35 | #include <duchamp/PixelMap/Scan.hh> |
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36 | #include <duchamp/PixelMap/Voxel.hh> |
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37 | |
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38 | namespace PixelInfo |
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39 | { |
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40 | |
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41 | /** |
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42 | * A class to store the pixel information for an object defined in a |
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43 | * 2-dimensional plane. |
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44 | * |
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45 | * The object consists of a set of Scans (stored as a std::vector), |
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46 | * together with basic information on the maximum, minimum, and |
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47 | * average values (actually stored as xSum, ySum) for the x and y |
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48 | * pixel values. |
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49 | */ |
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50 | |
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51 | class Object2D |
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52 | { |
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53 | public: |
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54 | Object2D(); |
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55 | Object2D(const Object2D& o); |
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56 | Object2D& operator= (const Object2D& o); |
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57 | virtual ~Object2D(){}; |
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58 | |
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59 | /** Clear the Object and set the number of pixels to zero.*/ |
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60 | void clear(){scanlist.clear(); numPix=0;}; |
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61 | |
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62 | /** Make sure there are no overlapping or adjacent scans in the |
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63 | Scan list. */ |
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64 | void cleanup(); |
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65 | |
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66 | /** Add a pixel to the Object, making sure no scans overlap |
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67 | afterwards. */ |
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68 | void addPixel(long x, long y); |
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69 | /** Add the (x,y) part of a Voxel to the Object, using |
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70 | addPixel(long,long)*/ |
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71 | void addPixel(Voxel v){this->addPixel(v.getX(),v.getY());}; |
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72 | /** Add a Pixel to the Object, using addPixel(long,long)*/ |
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73 | void addPixel(Pixel p){this->addPixel(p.getX(),p.getY());}; |
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74 | |
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75 | /** Add a full Scan to the Object, making sure there are no |
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76 | overlapping scans afterwards. */ |
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77 | void addScan(Scan scan); |
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78 | |
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79 | /** Test whether a pixel (x,y) is in the Object. */ |
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80 | bool isInObject(long x, long y); |
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81 | /** Test whether the (x,y) part of a Voxel is in the Object.*/ |
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82 | bool isInObject(Voxel v){return this->isInObject(v.getX(),v.getY());}; |
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83 | /** Test whether a Pixel is in the Object.*/ |
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84 | bool isInObject(Pixel p){return this->isInObject(p.getX(),p.getY());}; |
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85 | |
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86 | /** Test whether a given Scan overlaps with any pixels in the Object. */ |
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87 | bool scanOverlaps(Scan scan); |
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88 | |
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89 | /** Return the number of pixels in the Object. */ |
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90 | long getSize(){return numPix;}; |
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91 | |
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92 | /** Return the number of Scans in the Object. */ |
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93 | long getNumScan(){return scanlist.size();}; |
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94 | |
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95 | /** Get the i-th Scan in the Scan list. */ |
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96 | Scan getScan(int i){return scanlist[i];}; |
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97 | |
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98 | /** Order the Scans in the list, using the < operator for Scans. */ |
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99 | void order(){std::stable_sort(scanlist.begin(),scanlist.end());}; |
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100 | |
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101 | /** Add values to the x- and y-axes, making sure to add the |
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102 | offsets to the sums and min/max values. */ |
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103 | void addOffsets(long xoff, long yoff); |
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104 | |
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105 | /** Calculate the sums, mins, maxs for x&y -- should not be |
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106 | necessary as these are done when pixels & Scans are added. */ |
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107 | void calcParams(); |
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108 | |
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109 | /** Return the average x-value. */ |
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110 | float getXcentre(){return xSum/float(numPix);}; |
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111 | |
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112 | /** Return the average y-value. */ |
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113 | float getYcentre(){return ySum/float(numPix);}; |
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114 | |
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115 | long getXmin(){return xmin;}; |
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116 | long getYmin(){return ymin;}; |
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117 | long getXmax(){return xmax;}; |
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118 | long getYmax(){return ymax;}; |
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119 | |
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120 | /** Return the number of distinct y-values.*/ |
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121 | long getNumDistinctY(); |
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122 | /** Return the number of distinct x-values.*/ |
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123 | long getNumDistinctX(); |
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124 | |
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125 | double getPositionAngle(); |
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126 | std::pair<double,double> getPrincipleAxes(); |
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127 | |
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128 | /** A stream output operator. */ |
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129 | friend std::ostream& operator<< ( std::ostream& theStream, Object2D& obj); |
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130 | |
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131 | /** Adding two Objects together. */ |
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132 | friend Object2D operator+ (Object2D lhs, Object2D rhs){ |
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133 | Object2D output = lhs; |
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134 | for(unsigned int s=0;s<rhs.scanlist.size();s++) output.addScan(rhs.scanlist[s]); |
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135 | return output; |
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136 | } |
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137 | |
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138 | friend class Object3D; |
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139 | friend class ChanMap; |
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140 | |
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141 | private: |
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142 | std::vector<Scan> scanlist; ///< The list of Scans |
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143 | long numPix; ///< Number of pixels in the Object |
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144 | float xSum; ///< Sum of x values |
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145 | float ySum; ///< Sum of y values |
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146 | long xmin,xmax; ///< min and max x-values of object |
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147 | long ymin,ymax; ///< min and max y-values of object |
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148 | }; |
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149 | |
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150 | } |
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151 | |
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152 | #endif //OBJECT2D_H |
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