[301] | 1 | // ----------------------------------------------------------------------- |
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[528] | 2 | // Object3D.cc: Member functions for Object3D class. |
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[301] | 3 | // ----------------------------------------------------------------------- |
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| 4 | // Copyright (C) 2006, Matthew Whiting, ATNF |
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| 5 | // |
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| 6 | // This program is free software; you can redistribute it and/or modify it |
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| 7 | // under the terms of the GNU General Public License as published by the |
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| 8 | // Free Software Foundation; either version 2 of the License, or (at your |
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| 9 | // option) any later version. |
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| 10 | // |
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| 11 | // Duchamp is distributed in the hope that it will be useful, but WITHOUT |
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| 12 | // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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| 13 | // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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| 14 | // for more details. |
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| 15 | // |
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| 16 | // You should have received a copy of the GNU General Public License |
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| 17 | // along with Duchamp; if not, write to the Free Software Foundation, |
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| 18 | // Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA |
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| 19 | // |
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| 20 | // Correspondence concerning Duchamp may be directed to: |
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| 21 | // Internet email: Matthew.Whiting [at] atnf.csiro.au |
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| 22 | // Postal address: Dr. Matthew Whiting |
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| 23 | // Australia Telescope National Facility, CSIRO |
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| 24 | // PO Box 76 |
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| 25 | // Epping NSW 1710 |
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| 26 | // AUSTRALIA |
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| 27 | // ----------------------------------------------------------------------- |
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[244] | 28 | #include <iostream> |
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[1144] | 29 | #include <fstream> |
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[658] | 30 | #include <sstream> |
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[393] | 31 | #include <duchamp/PixelMap/Voxel.hh> |
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[1293] | 32 | #include <duchamp/PixelMap/Line.hh> |
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[393] | 33 | #include <duchamp/PixelMap/Scan.hh> |
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| 34 | #include <duchamp/PixelMap/Object2D.hh> |
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| 35 | #include <duchamp/PixelMap/Object3D.hh> |
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[927] | 36 | #include <duchamp/Utils/Section.hh> |
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[238] | 37 | #include <vector> |
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[570] | 38 | #include <map> |
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[238] | 39 | |
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[252] | 40 | namespace PixelInfo |
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| 41 | { |
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[365] | 42 | Object3D::Object3D() |
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| 43 | { |
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| 44 | this->numVox=0; |
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[570] | 45 | this->xSum = 0; |
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| 46 | this->ySum = 0; |
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| 47 | this->zSum = 0; |
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| 48 | this->xmin = this->xmax = this->ymin = this->ymax = this->zmin = this->zmax = -1; |
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[365] | 49 | } |
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[570] | 50 | //-------------------------------------------- |
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[365] | 51 | |
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[270] | 52 | Object3D::Object3D(const Object3D& o) |
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| 53 | { |
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[365] | 54 | operator=(o); |
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[252] | 55 | } |
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| 56 | //-------------------------------------------- |
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| 57 | |
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[270] | 58 | Object3D& Object3D::operator= (const Object3D& o) |
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| 59 | { |
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| 60 | if(this == &o) return *this; |
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[570] | 61 | this->chanlist = o.chanlist; |
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[252] | 62 | this->numVox = o.numVox; |
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[927] | 63 | this->spatialMap = o.spatialMap; |
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[252] | 64 | this->xSum = o.xSum; |
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| 65 | this->ySum = o.ySum; |
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| 66 | this->zSum = o.zSum; |
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| 67 | this->xmin = o.xmin; |
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| 68 | this->ymin = o.ymin; |
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| 69 | this->zmin = o.zmin; |
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| 70 | this->xmax = o.xmax; |
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| 71 | this->ymax = o.ymax; |
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| 72 | this->zmax = o.zmax; |
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[270] | 73 | return *this; |
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[252] | 74 | } |
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| 75 | //-------------------------------------------- |
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[570] | 76 | |
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| 77 | Object3D operator+ (Object3D lhs, Object3D rhs) |
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| 78 | { |
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| 79 | Object3D output = lhs; |
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| 80 | for(std::map<long, Object2D>::iterator it = rhs.chanlist.begin(); it!=rhs.chanlist.end();it++) |
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| 81 | output.addChannel(it->first, it->second); |
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[770] | 82 | // output.addChannel(*it); |
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[570] | 83 | return output; |
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| 84 | } |
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| 85 | |
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| 86 | //-------------------------------------------- |
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| 87 | float Object3D::getXaverage() |
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| 88 | { |
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| 89 | if(numVox>0) return xSum/float(numVox); |
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| 90 | else return 0.; |
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| 91 | } |
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| 92 | //-------------------------------------------- |
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| 93 | |
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| 94 | float Object3D::getYaverage() |
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| 95 | { |
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| 96 | if(numVox>0) return ySum/float(numVox); |
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| 97 | else return 0.; |
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| 98 | } |
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| 99 | //-------------------------------------------- |
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| 100 | |
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| 101 | float Object3D::getZaverage() |
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| 102 | { |
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| 103 | if(numVox>0) return zSum/float(numVox); |
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| 104 | else return 0.; |
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| 105 | } |
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| 106 | //-------------------------------------------- |
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[243] | 107 | |
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[252] | 108 | bool Object3D::isInObject(long x, long y, long z) |
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| 109 | { |
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[570] | 110 | std::map<long,Object2D>::iterator it=this->chanlist.begin(); |
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| 111 | while(it!=this->chanlist.end() && it->first!=z) it++; |
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| 112 | |
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| 113 | if(it==this->chanlist.end()) return false; |
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| 114 | else return it->second.isInObject(x,y); |
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[238] | 115 | } |
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[252] | 116 | //-------------------------------------------- |
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[238] | 117 | |
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[252] | 118 | void Object3D::addPixel(long x, long y, long z) |
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| 119 | { |
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[570] | 120 | |
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| 121 | std::map<long,Object2D>::iterator it=this->chanlist.begin(); |
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| 122 | while(it!=this->chanlist.end() && it->first!=z) it++; |
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[238] | 123 | |
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[570] | 124 | if(it==this->chanlist.end()){ //new channel |
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| 125 | Object2D obj; |
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| 126 | obj.addPixel(x,y); |
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| 127 | chanlist.insert( std::pair<int,Object2D>(z,obj) ); |
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[252] | 128 | // update the centres, min & max, as well as the number of voxels |
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| 129 | if(this->numVox==0){ |
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| 130 | this->xSum = this->xmin = this->xmax = x; |
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| 131 | this->ySum = this->ymin = this->ymax = y; |
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| 132 | this->zSum = this->zmin = this->zmax = z; |
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| 133 | } |
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| 134 | else{ |
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| 135 | this->xSum += x; |
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| 136 | this->ySum += y; |
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| 137 | this->zSum += z; |
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| 138 | if(x<this->xmin) this->xmin = x; |
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| 139 | if(x>this->xmax) this->xmax = x; |
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| 140 | if(y<this->ymin) this->ymin = y; |
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| 141 | if(y>this->ymax) this->ymax = y; |
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[570] | 142 | // since we've ordered the maplist, the min & max z fall out naturally |
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| 143 | this->zmin = this->chanlist.begin()->first; |
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| 144 | this->zmax = this->chanlist.rbegin()->first; |
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[252] | 145 | } |
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| 146 | this->numVox++; |
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[246] | 147 | } |
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[570] | 148 | else{ // existing channel |
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| 149 | // This method deals with the case of a new pixel being added AND |
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| 150 | // with the new pixel already existing in the Object2D |
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| 151 | |
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[252] | 152 | // Remove that channel's information from the Object's information |
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[570] | 153 | this->xSum -= it->second.xSum; |
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| 154 | this->ySum -= it->second.ySum; |
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[776] | 155 | this->zSum -= z*it->second.numPix; |
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| 156 | this->numVox -= it->second.numPix; |
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[252] | 157 | |
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[570] | 158 | // Add the pixel |
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| 159 | it->second.addPixel(x,y); |
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[252] | 160 | |
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[776] | 161 | this->numVox += it->second.numPix; |
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[570] | 162 | this->xSum += it->second.xSum; |
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| 163 | this->ySum += it->second.ySum; |
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[776] | 164 | this->zSum += z*it->second.numPix; |
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[246] | 165 | if(x<this->xmin) this->xmin = x; |
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| 166 | if(x>this->xmax) this->xmax = x; |
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| 167 | if(y<this->ymin) this->ymin = y; |
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| 168 | if(y>this->ymax) this->ymax = y; |
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[252] | 169 | // don't need to do anything to zmin/zmax -- the z-value is |
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| 170 | // already in the list |
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[246] | 171 | } |
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| 172 | |
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[927] | 173 | this->spatialMap.addPixel(x,y); |
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| 174 | |
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[238] | 175 | } |
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[252] | 176 | //-------------------------------------------- |
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[238] | 177 | |
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[472] | 178 | void Object3D::addScan(Scan s, long z) |
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| 179 | { |
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| 180 | long y=s.getY(); |
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| 181 | for(int x=s.getX(); x<=s.getXmax(); x++) |
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| 182 | this->addPixel(x,y,z); |
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| 183 | } |
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| 184 | |
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| 185 | //-------------------------------------------- |
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| 186 | |
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[770] | 187 | // void Object3D::addChannel(const std::pair<long, Object2D> *chan) |
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| 188 | // { |
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| 189 | // long z = chan->first; |
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| 190 | // Object2D |
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| 191 | // } |
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| 192 | |
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| 193 | |
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[570] | 194 | void Object3D::addChannel(const long &z, Object2D &obj) |
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[252] | 195 | { |
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[238] | 196 | |
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[570] | 197 | std::map<long,Object2D>::iterator it=this->chanlist.begin(); |
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| 198 | while(it!=this->chanlist.end() && it->first!=z) it++; |
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| 199 | |
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[577] | 200 | if(it == this->chanlist.end()){ // channel z is not already in object, so add it. |
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[570] | 201 | this->chanlist.insert(std::pair<long,Object2D>(z,obj)); |
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[577] | 202 | if(this->numVox == 0){ // if there are no other pixels, so initialise mins,maxs,sums |
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[570] | 203 | this->xmin = obj.xmin; |
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| 204 | this->xmax = obj.xmax; |
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| 205 | this->ymin = obj.ymin; |
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| 206 | this->ymax = obj.ymax; |
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| 207 | this->zmin = this->zmax = z; |
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| 208 | this->xSum = obj.xSum; |
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| 209 | this->ySum = obj.ySum; |
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| 210 | this->zSum = z * obj.getSize(); |
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[252] | 211 | } |
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[577] | 212 | else{ // there are other pixels in other channels, so update mins, maxs, sums |
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[570] | 213 | if(obj.xmin<this->xmin) this->xmin = obj.xmin; |
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| 214 | if(obj.xmax>this->xmax) this->xmax = obj.xmax; |
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| 215 | if(obj.ymin<this->ymin) this->ymin = obj.ymin; |
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| 216 | if(obj.ymax>this->ymax) this->ymax = obj.ymax; |
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| 217 | if(z<this->zmin) this->zmin = z; |
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| 218 | if(z>this->zmax) this->zmax = z; |
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| 219 | this->xSum += obj.xSum; |
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| 220 | this->ySum += obj.ySum; |
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| 221 | this->zSum += z * obj.getSize(); |
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[252] | 222 | } |
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[570] | 223 | this->numVox += obj.getSize(); |
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[246] | 224 | } |
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[577] | 225 | else{ // channel is already present, so need to combine objects. |
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[570] | 226 | this->xSum -= it->second.xSum; |
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| 227 | this->ySum -= it->second.ySum; |
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| 228 | this->zSum -= z*it->second.getSize(); |
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| 229 | this->numVox -= it->second.getSize(); |
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[577] | 230 | it->second = it->second + obj; |
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[570] | 231 | this->xSum += it->second.xSum; |
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| 232 | this->ySum += it->second.ySum; |
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| 233 | this->zSum += z*it->second.getSize(); |
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| 234 | this->numVox += it->second.getSize(); |
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| 235 | if(obj.xmin<this->xmin) this->xmin = obj.xmin; |
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| 236 | if(obj.xmax>this->xmax) this->xmax = obj.xmax; |
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| 237 | if(obj.ymin<this->ymin) this->ymin = obj.ymin; |
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| 238 | if(obj.ymax>this->ymax) this->ymax = obj.ymax; |
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[252] | 239 | } |
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[419] | 240 | |
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[927] | 241 | this->spatialMap = this->spatialMap + obj; |
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[238] | 242 | |
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| 243 | } |
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| 244 | |
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[252] | 245 | //-------------------------------------------- |
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[238] | 246 | |
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[252] | 247 | void Object3D::calcParams() |
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| 248 | { |
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| 249 | this->xSum = 0; |
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| 250 | this->ySum = 0; |
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| 251 | this->zSum = 0; |
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[570] | 252 | this->numVox = 0; |
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[238] | 253 | |
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[570] | 254 | this->zmin = this->chanlist.begin()->first; |
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| 255 | this->zmax = this->chanlist.rbegin()->first; |
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| 256 | for(std::map<long, Object2D>::iterator it = this->chanlist.begin(); |
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| 257 | it!=this->chanlist.end();it++){ |
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[238] | 258 | |
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[570] | 259 | it->second.calcParams(); |
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| 260 | |
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| 261 | if(it==this->chanlist.begin()){ |
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| 262 | this->xmin = it->second.getXmin(); |
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| 263 | this->xmax = it->second.getXmax(); |
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| 264 | this->ymin = it->second.getYmin(); |
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| 265 | this->ymax = it->second.getYmax(); |
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[252] | 266 | } |
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| 267 | else{ |
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[570] | 268 | if(it->second.xmin<this->xmin) this->xmin = it->second.xmin; |
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| 269 | if(it->second.xmax>this->xmax) this->xmax = it->second.xmax; |
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| 270 | if(it->second.ymin<this->ymin) this->ymin = it->second.ymin; |
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| 271 | if(it->second.ymax>this->ymax) this->ymax = it->second.ymax; |
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[252] | 272 | } |
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| 273 | |
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[570] | 274 | this->xSum += it->second.xSum; |
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| 275 | this->ySum += it->second.ySum; |
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| 276 | this->zSum += it->first * it->second.getSize(); |
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| 277 | this->numVox += it->second.getSize(); |
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[252] | 278 | |
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[238] | 279 | } |
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| 280 | |
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| 281 | } |
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[252] | 282 | //------------------------------------------------------ |
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[238] | 283 | |
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[1146] | 284 | void Object3D::write(std::string filename) |
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[1144] | 285 | { |
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| 286 | std::ofstream outfile(filename.c_str(), std::ios::out | std::ios::binary | std::ios::app); |
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| 287 | size_t size=this->chanlist.size(); |
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| 288 | outfile.write(reinterpret_cast<const char*>(&size), sizeof size); |
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| 289 | for(std::map<long, Object2D>::iterator it = this->chanlist.begin(); |
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| 290 | it!=this->chanlist.end();it++){ |
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| 291 | |
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| 292 | outfile.write(reinterpret_cast<const char*>(&(it->first)), sizeof it->first); |
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| 293 | size=it->second.scanlist.size(); |
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| 294 | outfile.write(reinterpret_cast<const char*>(&size), sizeof size); |
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| 295 | for(std::vector<Scan>::iterator s=it->second.scanlist.begin();s!=it->second.scanlist.end();s++){ |
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| 296 | outfile.write(reinterpret_cast<const char*>(&(s->itsX)),sizeof s->itsX); |
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| 297 | outfile.write(reinterpret_cast<const char*>(&(s->itsXLen)),sizeof s->itsXLen); |
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| 298 | outfile.write(reinterpret_cast<const char*>(&(s->itsY)),sizeof s->itsY); |
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| 299 | } |
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| 300 | |
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| 301 | } |
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| 302 | outfile.close(); |
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| 303 | |
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| 304 | } |
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| 305 | |
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[1146] | 306 | std::streampos Object3D::read(std::string filename, std::streampos loc) |
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[1144] | 307 | { |
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| 308 | std::ifstream infile(filename.c_str(), std::ios::in | std::ios::binary); |
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[1146] | 309 | infile.seekg(loc); |
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[1144] | 310 | size_t mapsize,scanlistsize; |
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| 311 | long z,x,xl,y; |
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| 312 | infile.read(reinterpret_cast<char*>(&mapsize), sizeof mapsize); |
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| 313 | for(size_t i=0;i<mapsize;i++){ |
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| 314 | infile.read(reinterpret_cast<char*>(&z), sizeof z); |
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| 315 | Object2D obj; |
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| 316 | infile.read(reinterpret_cast<char*>(&scanlistsize), sizeof scanlistsize); |
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| 317 | for(size_t j=0;j<scanlistsize;j++){ |
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| 318 | infile.read(reinterpret_cast<char*>(&x),sizeof x); |
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| 319 | infile.read(reinterpret_cast<char*>(&xl),sizeof xl); |
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| 320 | infile.read(reinterpret_cast<char*>(&y),sizeof y); |
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| 321 | Scan scn(y,x,xl); |
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| 322 | obj.addScan(scn); |
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| 323 | } |
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| 324 | this->addChannel(z,obj); |
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| 325 | } |
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[1146] | 326 | std::streampos newloc = infile.tellg(); |
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[1144] | 327 | infile.close(); |
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[1146] | 328 | return newloc; |
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[1144] | 329 | } |
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| 330 | |
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| 331 | |
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[773] | 332 | void Object3D::print(std::ostream& theStream) |
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[252] | 333 | { |
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[773] | 334 | for(std::map<long, Object2D>::iterator it = this->chanlist.begin(); |
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| 335 | it!=this->chanlist.end();it++){ |
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| 336 | for(std::vector<Scan>::iterator s=it->second.scanlist.begin();s!=it->second.scanlist.end();s++){ |
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| 337 | theStream << *s << "," << it->first << "\n"; |
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[244] | 338 | } |
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[252] | 339 | } |
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| 340 | theStream << "\n"; |
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[773] | 341 | } |
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| 342 | |
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| 343 | |
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| 344 | std::ostream& operator<< ( std::ostream& theStream, Object3D& obj) |
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| 345 | { |
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| 346 | obj.print(theStream); |
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[270] | 347 | return theStream; |
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[252] | 348 | } |
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| 349 | //-------------------------------------------- |
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[241] | 350 | |
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[252] | 351 | std::vector<Voxel> Object3D::getPixelSet() |
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| 352 | { |
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[724] | 353 | /// @details Returns a vector of the Voxels in the object. All |
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| 354 | /// flux values are set to 0. |
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| 355 | |
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[252] | 356 | std::vector<Voxel> voxList(this->numVox); |
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| 357 | long count = 0; |
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[570] | 358 | for(std::map<long, Object2D>::iterator it = this->chanlist.begin(); |
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| 359 | it!=this->chanlist.end();it++){ |
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| 360 | long z = it->first; |
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[773] | 361 | for(std::vector<Scan>::iterator s=it->second.scanlist.begin();s!=it->second.scanlist.end();s++){ |
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| 362 | long y = s->getY(); |
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| 363 | for(long x=s->getX(); x<=s->getXmax(); x++){ |
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[252] | 364 | voxList[count].setXYZF(x,y,z,0); |
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| 365 | count++; |
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[241] | 366 | } |
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[252] | 367 | } |
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[241] | 368 | } |
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[252] | 369 | return voxList; |
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[243] | 370 | |
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| 371 | } |
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| 372 | |
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[399] | 373 | //-------------------------------------------------------------------- |
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| 374 | |
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[1002] | 375 | std::vector<Voxel> Object3D::getPixelSet(float *array, size_t *dim) |
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[724] | 376 | { |
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| 377 | /// @details Returns a vector of Voxels with the flux values for each voxel |
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| 378 | /// taken from the array provided. No check is made as to whether |
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| 379 | /// the pixels fall in the array boundaries |
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| 380 | /// @param array Array of pixel values |
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| 381 | /// @param dim Array of axis dimensions |
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| 382 | |
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| 383 | std::vector<Voxel> voxList(this->numVox); |
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| 384 | long count = 0; |
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| 385 | for(std::map<long, Object2D>::iterator it = this->chanlist.begin(); |
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| 386 | it!=this->chanlist.end();it++){ |
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| 387 | long z = it->first; |
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[773] | 388 | for(std::vector<Scan>::iterator s=it->second.scanlist.begin();s!=it->second.scanlist.end();s++){ |
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| 389 | long y = s->getY(); |
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| 390 | for(long x=s->getX(); x<=s->getXmax(); x++){ |
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[724] | 391 | voxList[count].setXYZF(x,y,z,array[x+dim[0]*y+dim[0]*dim[1]*z]); |
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| 392 | count++; |
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| 393 | } |
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| 394 | } |
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| 395 | } |
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| 396 | return voxList; |
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| 397 | |
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| 398 | } |
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| 399 | |
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| 400 | //-------------------------------------------------------------------- |
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| 401 | |
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[570] | 402 | std::vector<long> Object3D::getChannelList() |
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[399] | 403 | { |
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[570] | 404 | |
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| 405 | std::vector<long> chanlist; |
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| 406 | for(std::map<long, Object2D>::iterator it = this->chanlist.begin(); |
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| 407 | it != this->chanlist.end(); it++){ |
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| 408 | chanlist.push_back(it->first); |
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| 409 | } |
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| 410 | return chanlist; |
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[399] | 411 | } |
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[570] | 412 | |
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[399] | 413 | //-------------------------------------------------------------------- |
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| 414 | |
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[570] | 415 | Object2D Object3D::getChanMap(long z) |
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| 416 | { |
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| 417 | Object2D obj; |
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| 418 | std::map<long,Object2D>::iterator it=this->chanlist.begin(); |
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| 419 | while(it!=this->chanlist.end() && it->first!=z) it++; |
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| 420 | |
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| 421 | if(it==this->chanlist.end()) obj = Object2D(); |
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| 422 | else obj = it->second; |
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| 423 | |
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| 424 | return obj; |
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| 425 | } |
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| 426 | |
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| 427 | //-------------------------------------------------------------------- |
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| 428 | |
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[1261] | 429 | unsigned int Object3D::getMaxAdjacentChannels() |
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[570] | 430 | { |
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[691] | 431 | /// @details Find the maximum number of contiguous channels in the |
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| 432 | /// object. Since there can be gaps in the channels included in an |
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| 433 | /// object, we run through the list of channels and keep track of |
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| 434 | /// sizes of contiguous segments. Then return the largest size. |
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| 435 | |
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[1261] | 436 | unsigned int maxnumchan=0; |
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| 437 | unsigned int zcurrent=0, zprevious,zcount=0; |
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[691] | 438 | std::map<long, Object2D>::iterator it; |
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| 439 | for(it = this->chanlist.begin(); it!=this->chanlist.end();it++) |
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[570] | 440 | { |
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[691] | 441 | if(it==this->chanlist.begin()){ |
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| 442 | zcount++; |
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| 443 | zcurrent = it->first; |
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[570] | 444 | } |
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[691] | 445 | else{ |
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| 446 | zprevious = zcurrent; |
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| 447 | zcurrent = it->first; |
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| 448 | if(zcurrent-zprevious>1){ |
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| 449 | maxnumchan = std::max(maxnumchan, zcount); |
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| 450 | zcount=1; |
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| 451 | } |
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| 452 | else zcount++; |
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| 453 | } |
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[570] | 454 | } |
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| 455 | maxnumchan = std::max(maxnumchan,zcount); |
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| 456 | return maxnumchan; |
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| 457 | } |
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| 458 | |
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| 459 | //-------------------------------------------------------------------- |
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| 460 | |
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[399] | 461 | void Object3D::addOffsets(long xoff, long yoff, long zoff) |
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[419] | 462 | { |
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[658] | 463 | std::map<long,Object2D> newmap; |
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| 464 | for(std::map<long, Object2D>::iterator it = this->chanlist.begin(); it!=this->chanlist.end();it++){ |
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| 465 | std::pair<long,Object2D> newOne(it->first+zoff, it->second); |
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| 466 | newOne.second.addOffsets(xoff,yoff); |
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| 467 | newmap.insert(newOne); |
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| 468 | } |
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| 469 | this->chanlist.clear(); |
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| 470 | this->chanlist = newmap; |
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[1423] | 471 | this->spatialMap.addOffsets(xoff,yoff); |
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[570] | 472 | if(this->numVox>0){ |
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| 473 | this->xSum += xoff*numVox; |
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| 474 | this->xmin += xoff; this->xmax += xoff; |
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| 475 | this->ySum += yoff*numVox; |
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| 476 | this->ymin += yoff; this->ymax += yoff; |
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| 477 | this->zSum += zoff*numVox; |
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| 478 | this->zmin += zoff; this->zmax += zoff; |
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| 479 | } |
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[419] | 480 | } |
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[399] | 481 | |
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[658] | 482 | |
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| 483 | duchamp::Section Object3D::getBoundingSection(int boundary) |
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| 484 | { |
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| 485 | std::stringstream ss; |
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| 486 | ss << "[" << this->xmin-boundary <<":"<<this->xmax+boundary<<","<< this->ymin-boundary <<":"<<this->ymax+boundary<<","<< this->zmin-boundary <<":"<<this->zmax+boundary<<"]"; |
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| 487 | std::string sec=ss.str(); |
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| 488 | duchamp::Section section(sec); |
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| 489 | return section; |
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| 490 | } |
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| 491 | |
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[1293] | 492 | std::vector<std::vector<Voxel> > Object3D::getVertexSet() |
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| 493 | { |
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| 494 | /// @details |
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[1353] | 495 | /// Returns a vector of vectors of Voxels. Each vector of Voxels is a join-the-dots outline of an island of pixels, and there is one vector for each separate island (since an Object3D may have more than one island of connected pixels). |
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| 496 | /// \return The vector of vectors of Voxels. |
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[1293] | 497 | |
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| 498 | int xmin = this->getXmin() - 1; |
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| 499 | int xmax = this->getXmax() + 1; |
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| 500 | int ymin = this->getYmin() - 1; |
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| 501 | int ymax = this->getYmax() + 1; |
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| 502 | int xsize = xmax - xmin + 1; |
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| 503 | int ysize = ymax - ymin + 1; |
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| 504 | |
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| 505 | std::vector<Voxel> voxlist = this->getPixelSet(); |
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| 506 | std::vector<bool> isObj(xsize*ysize,false); |
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| 507 | std::vector<Voxel>::iterator vox; |
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| 508 | for(vox=voxlist.begin();vox<voxlist.end();vox++){ |
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[1353] | 509 | size_t pos = (vox->getX()-xmin) + (vox->getY()-ymin)*xsize; |
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[1293] | 510 | isObj[pos] = true; |
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| 511 | } |
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| 512 | voxlist.clear(); |
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| 513 | |
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| 514 | std::vector<Line> linelist; |
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| 515 | for(int x=xmin; x<=xmax; x++){ |
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| 516 | // for each column... |
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| 517 | for(int y=ymin+1;y<=ymax;y++){ |
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| 518 | int current = (y-ymin)*xsize + x-xmin; |
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| 519 | int previous = (y-ymin-1)*xsize + x-xmin; |
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| 520 | if((isObj[current]&&!isObj[previous]) || |
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| 521 | (!isObj[current]&&isObj[previous])){ |
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| 522 | linelist.push_back(Line(x,y,x+1,y)); |
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| 523 | } |
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| 524 | } |
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| 525 | } |
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| 526 | for(int y=ymin; y<=ymax; y++){ |
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| 527 | // now for each row... |
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| 528 | for(int x=xmin+1;x<=xmax;x++){ |
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| 529 | int current = (y-ymin)*xsize + x-xmin; |
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| 530 | int previous = (y-ymin)*xsize + x-xmin - 1; |
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| 531 | if((isObj[current]&&!isObj[previous]) || |
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| 532 | (!isObj[current]&&isObj[previous])){ |
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| 533 | linelist.push_back(Line(x,y,x,y+1)); |
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| 534 | } |
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| 535 | } |
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| 536 | } |
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| 537 | |
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| 538 | std::vector<std::vector<Voxel> > vertSet; |
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| 539 | while(linelist.size()>0){ |
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| 540 | std::vector<Voxel> orderedVertices; |
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| 541 | std::vector<Line>::iterator line=linelist.begin(); |
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| 542 | orderedVertices.push_back(line->start()); |
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| 543 | Voxel comp=line->end(),prev=line->start(); |
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| 544 | orderedVertices.push_back(comp); |
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| 545 | linelist.erase(line); |
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| 546 | bool atEnd=false; |
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| 547 | do{ |
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| 548 | bool foundIt=false; |
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| 549 | line=linelist.begin(); |
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| 550 | while(line!=linelist.end() && !foundIt){ |
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| 551 | foundIt = line->has(comp); |
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| 552 | atEnd = line->has(orderedVertices[0]); |
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| 553 | if(comp == line->start()){ |
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| 554 | orderedVertices.push_back(line->end()); |
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| 555 | comp=line->end(); |
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| 556 | } |
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| 557 | else if (comp==line->end()){ |
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| 558 | orderedVertices.push_back(line->start()); |
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| 559 | comp=line->start(); |
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| 560 | } |
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| 561 | if(foundIt) linelist.erase(line); |
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| 562 | else line++; |
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| 563 | } |
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| 564 | } while(linelist.size()>0 && !atEnd); |
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| 565 | vertSet.push_back(orderedVertices); |
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| 566 | } |
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| 567 | |
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| 568 | return vertSet; |
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| 569 | |
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| 570 | } |
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| 571 | |
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| 572 | |
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| 573 | |
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| 574 | |
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[243] | 575 | } |
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