1 | #include <iostream> |
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2 | #include <sstream> |
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3 | #include <cpgplot.h> |
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4 | #include <math.h> |
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5 | #include <wcs.h> |
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6 | #include <Cubes/cubes.hh> |
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7 | #include <Utils/utils.hh> |
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8 | |
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9 | void Cube::drawMomentCutout(Detection &object) |
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10 | { |
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11 | /** |
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12 | * Cube::drawMomentCutout(object) |
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13 | * |
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14 | * A routine to draw the 0th moment for the given detection |
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15 | * using the flux given by the pixel array in the Cube. |
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16 | * The 0th moment is constructed by adding the flux of each |
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17 | * pixel within the full extent of the object (this may be more |
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18 | * pixels than were actually detected in the object) |
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19 | * A tick mark is also drawn to indicate angular scale (but only |
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20 | * if the WCS for the Cube is valid). |
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21 | */ |
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22 | |
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23 | bool flagBlankPix = this->par.getFlagBlankPix(); |
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24 | this->par.setFlagBlankPix(true); |
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25 | |
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26 | float x1,x2,y1,y2; |
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27 | cpgqwin(&x1,&x2,&y1,&y2); |
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28 | |
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29 | long size = (object.getXmax()-object.getXmin()+1); |
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30 | if(size<(object.getYmax()-object.getYmin()+1)) |
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31 | size = object.getYmax()-object.getYmin()+1; |
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32 | size += 20; |
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33 | |
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34 | float blankVal = this->par.getBlankPixVal(); |
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35 | |
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36 | long xmin = (object.getXmax()+object.getXmin())/2 - size/2 + 1; |
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37 | long xmax = (object.getXmax()+object.getXmin())/2 + size/2; |
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38 | long ymin = (object.getYmax()+object.getYmin())/2 - size/2 + 1; |
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39 | long ymax = (object.getYmax()+object.getYmin())/2 + size/2; |
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40 | long zmin = object.getZmin(); |
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41 | long zmax = object.getZmax(); |
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42 | |
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43 | float *image = new float[size*size]; |
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44 | for(int i=0;i<size*size;i++) image[i]=blankVal; |
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45 | |
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46 | int imPos,cubePos; |
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47 | float val; |
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48 | for(int z=zmin; z<=zmax; z++){ |
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49 | for(int x=xmin; x<=xmax; x++){ |
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50 | for(int y=ymin; y<=ymax; y++){ |
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51 | imPos = (y-ymin) * size + (x-xmin); |
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52 | cubePos = (z)*this->axisDim[0]*this->axisDim[1]+(y)*this->axisDim[0]+(x); |
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53 | if((x<0)||(x>=this->axisDim[0])||(y<0)||(y>=this->axisDim[1])) // if outside the boundaries |
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54 | image[imPos] = blankVal; |
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55 | else{ |
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56 | val = this->array[cubePos]; |
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57 | if (!this->par.isBlank(val)) // if pixel's not blank |
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58 | image[imPos] += val; |
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59 | } |
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60 | } |
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61 | } |
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62 | } |
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63 | |
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64 | for(int i=0;i<size*size;i++){ |
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65 | if(!this->par.isBlank(image[i])){ // if there is some signal on this pixel |
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66 | image[i]-=blankVal; // remove the starting value so we just have the signal |
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67 | image[i] /= float(zmax-zmin+1); // normalise by the velocity width |
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68 | } |
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69 | } |
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70 | |
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71 | // now work out the greyscale display limits, excluding blank pixels where necessary. |
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72 | float z1,z2,median,madfm; |
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73 | int ct=0; |
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74 | while(this->par.isBlank(image[ct])) ct++; // move to first non-blank pixel |
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75 | z1 = z2 = image[ct]; |
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76 | for(int i=1;i<size*size;i++){ |
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77 | if(!this->par.isBlank(image[i])){ |
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78 | if(image[i]<z1) z1=image[i]; |
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79 | if(image[i]>z2) z2=image[i]; |
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80 | } |
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81 | } |
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82 | |
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83 | float tr[6] = {xmin-1,1.,0.,ymin-1,0.,1.}; |
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84 | |
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85 | cpgswin(xmin-0.5,xmax-0.5,ymin-0.5,ymax-0.5); |
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86 | cpggray(image, size, size, 1, size, 1, size, z1, z2, tr); |
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87 | |
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88 | delete [] image; |
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89 | |
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90 | // Draw the borders around the object |
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91 | int ci; |
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92 | cpgqci(&ci); |
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93 | cpgsci(4); |
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94 | cpgsfs(2); |
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95 | if(this->par.drawBorders()) |
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96 | object.drawBorders(xmin,ymin); |
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97 | else |
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98 | cpgrect(object.getXmin()-xmin+0.5,object.getXmax()-xmin+1.5, |
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99 | object.getYmin()-ymin+0.5,object.getYmax()-ymin+1.5); |
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100 | /* |
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101 | To get the borders localised correctly, we need to subtract (xmin-1) from the |
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102 | X values. We then subtract 0.5 for the left hand border (to place it on the |
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103 | pixel border), and add 0.5 for the right hand border. Similarly for y. |
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104 | */ |
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105 | cpgsci(ci); |
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106 | |
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107 | if(this->head.isWCS()){ |
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108 | // Now draw a tick mark to indicate size -- 15 arcmin in length |
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109 | this->drawScale(xmin+2.,ymin+2.,object.getZcentre(),0.25); |
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110 | } |
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111 | |
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112 | cpgsci(1); |
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113 | cpgswin(x1,x2,y1,y2); |
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114 | |
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115 | this->par.setFlagBlankPix(flagBlankPix); |
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116 | |
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117 | } |
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118 | |
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119 | void Cube::drawScale(float xstart, float ystart, float channel, float scaleLength) |
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120 | { |
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121 | /** |
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122 | * Cube::drawScale(xstart, ystart, channel, scaleLength) |
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123 | * |
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124 | * A routine to draw a scale bar on a (pre-existing) PGPlot image. |
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125 | * It uses an iterative technique to move from the given start position |
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126 | * (xstart,ystart) along the positive x-direction so that the length is |
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127 | * within 1% of the requested value scaleLength. |
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128 | * The parameter "channel" is required for the wcslib calculations, as the |
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129 | * positions could theoretically change with channel. |
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130 | */ |
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131 | |
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132 | double *pix1 = new double[3]; |
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133 | double *pix2 = new double[3]; |
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134 | double *world1 = new double[3]; |
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135 | double *world2 = new double[3]; |
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136 | pix1[0] = pix2[0] = xstart + this->par.getXOffset(); |
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137 | pix1[1] = pix2[1] = ystart + this->par.getYOffset(); |
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138 | pix1[2] = pix2[2] = channel; |
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139 | this->head.pixToWCS(pix1,world1); |
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140 | |
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141 | double angSep=0.; |
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142 | bool keepGoing=false; |
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143 | float step = 1.; |
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144 | do{ |
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145 | if(angSep>scaleLength){ |
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146 | pix2[0] -= step; |
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147 | step /= 2.; |
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148 | } |
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149 | pix2[0] += step; |
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150 | this->head.pixToWCS(pix2,world2); |
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151 | angSep = angularSeparation(world1[0],world1[1],world2[0],world2[1]); |
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152 | }while((fabs(angSep-scaleLength)/scaleLength)>0.01); // look for 1% change |
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153 | |
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154 | float tickpt1 = pix1[0] - this->par.getXOffset(); |
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155 | float tickpt2 = pix2[0] - this->par.getXOffset(); |
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156 | float tickpt3 = ystart; |
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157 | int colour; |
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158 | cpgqci(&colour); |
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159 | cpgsci(2); |
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160 | int thick; |
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161 | cpgqlw(&thick); |
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162 | cpgslw(3); |
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163 | cpgerrx(1,&tickpt1,&tickpt2,&tickpt3,2.); |
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164 | cpgslw(thick); |
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165 | |
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166 | std::stringstream text; |
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167 | text << scaleLength*60 << "'"; |
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168 | float size,xch,ych; |
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169 | cpgqch(&size); |
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170 | cpgsch(0.4); |
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171 | cpgqcs(4,&xch,&ych); // get the character size in world coords |
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172 | cpgptxt((tickpt1+tickpt2)/2., ystart+ych, 0, 0.5, text.str().c_str()); |
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173 | cpgsch(size); |
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174 | cpgsci(colour); |
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175 | |
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176 | delete [] pix1,pix2; |
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177 | delete [] world1,world2; |
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178 | |
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179 | |
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180 | } |
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181 | |
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182 | |
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183 | void Detection::drawBorders(int xoffset, int yoffset) |
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184 | { |
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185 | |
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186 | float x1,x2,y1,y2; |
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187 | cpgqwin(&x1,&x2,&y1,&y2); |
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188 | int xsize = int(x2 - x1) + 1; |
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189 | int ysize = int(y2 - y1) + 1; |
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190 | |
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191 | bool *isObj = new bool[xsize*ysize]; |
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192 | for(int i=0;i<xsize*ysize;i++) isObj[i]=false; |
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193 | for(int i=0;i<this->pix.size();i++) |
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194 | isObj[ (this->pix[i].getY()-yoffset)*xsize + (this->pix[i].getX()-xoffset) ] = true; |
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195 | |
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196 | |
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197 | cpgswin(0,xsize-1,0,ysize-1); |
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198 | for(int x=this->xmin; x<=this->xmax; x++){ |
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199 | // for each column... |
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200 | for(int y=1;y<ysize;y++){ |
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201 | int current = y*xsize + (x-xoffset); |
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202 | int previous = (y-1)*xsize + (x-xoffset); |
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203 | if((isObj[current]&&!isObj[previous])||(!isObj[current]&&isObj[previous])){ |
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204 | cpgmove(x-xoffset+0, y+0); |
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205 | cpgdraw(x-xoffset+1, y+0); |
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206 | } |
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207 | } |
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208 | } |
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209 | for(int y=this->ymin; y<=this->ymax; y++){ |
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210 | // now for each row... |
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211 | for(int x=1;x<xsize;x++){ |
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212 | int current = (y-yoffset)*xsize + x; |
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213 | int previous = (y-yoffset)*xsize + x - 1; |
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214 | if((isObj[current]&&!isObj[previous])||(!isObj[current]&&isObj[previous])){ |
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215 | cpgmove(x+0, y-yoffset+0); |
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216 | cpgdraw(x+0, y-yoffset+1); |
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217 | } |
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218 | } |
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219 | } |
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220 | cpgswin(x1,x2,y1,y2); |
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221 | |
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222 | delete [] isObj; |
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223 | |
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224 | } |
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