1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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2 | /* |
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3 | * ---------------------------------------------------------------------- |
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4 | * Nanovis: Visualization of Nanoelectronics Data |
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5 | * |
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6 | * dxReader.cpp |
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7 | * This module contains openDX readers for 2D and 3D volumes. |
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8 | * |
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9 | * ====================================================================== |
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10 | * AUTHOR: Wei Qiao <qiaow@purdue.edu> |
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11 | * Michael McLennan <mmclennan@purdue.edu> |
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12 | * Purdue Rendering and Perceptualization Lab (PURPL) |
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13 | * |
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14 | * Copyright (c) 2004-2006 Purdue Research Foundation |
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15 | * |
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16 | * See the file "license.terms" for information on usage and |
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17 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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18 | * ====================================================================== |
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19 | */ |
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20 | |
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21 | // common dx functions |
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22 | #include "dxReaderCommon.h" |
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23 | |
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24 | #include <stdio.h> |
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25 | #include <math.h> |
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26 | #include <fstream> |
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27 | #include <iostream> |
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28 | #include <sstream> |
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29 | #include <string> |
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30 | #include <sys/types.h> |
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31 | #include <unistd.h> |
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32 | |
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33 | #include "Nv.h" |
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34 | |
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35 | #include "nanovis.h" |
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36 | #include "RpField1D.h" |
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37 | #include "RpFieldRect3D.h" |
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38 | #include "RpFieldPrism3D.h" |
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39 | #include <Unirect.h> |
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40 | |
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41 | //transfer function headers |
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42 | #include "ZincBlendeVolume.h" |
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43 | #include "NvZincBlendeReconstructor.h" |
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44 | |
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45 | #define _LOCAL_ZINC_TEST_ 0 |
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46 | |
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47 | /* Load a 3D volume from a dx-format file |
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48 | */ |
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49 | Volume * |
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50 | load_volume_stream2(Rappture::Outcome &result, const char *tag, |
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51 | std::iostream& fin) |
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52 | { |
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53 | TRACE("load_volume_stream2 %s\n", tag); |
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54 | Rappture::MeshTri2D xymesh; |
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55 | int dummy, nx, ny, nz, nxy, npts; |
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56 | double x0, y0, z0, dx, dy, dz, ddx, ddy, ddz; |
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57 | char line[128], type[128], *start; |
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58 | |
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59 | int isrect = 1; |
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60 | dx = dy = dz = 0.0; // Suppress compiler warning. |
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61 | x0 = y0 = z0 = 0.0; // May not have an origin line. |
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62 | nx = ny = nz = npts = nxy = 0; |
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63 | do { |
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64 | fin.getline(line,sizeof(line)-1); |
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65 | for (start=&line[0]; *start == ' ' || *start == '\t'; start++) |
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66 | ; // skip leading blanks |
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67 | |
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68 | if (*start != '#') { // skip comment lines |
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69 | if (sscanf(start, "object %d class gridpositions counts %d %d %d", |
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70 | &dummy, &nx, &ny, &nz) == 4) { |
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71 | // found grid size |
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72 | isrect = 1; |
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73 | } else if (sscanf(start, "object %d class array type float rank 1 shape 3 items %d data follows", &dummy, &nxy) == 2) { |
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74 | isrect = 0; |
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75 | double xx, yy, zz; |
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76 | for (int i=0; i < nxy; i++) { |
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77 | fin.getline(line,sizeof(line)-1); |
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78 | if (sscanf(line, "%lg %lg %lg", &xx, &yy, &zz) == 3) { |
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79 | xymesh.addNode( Rappture::Node2D(xx,yy) ); |
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80 | } |
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81 | } |
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82 | |
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83 | char fpts[128]; |
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84 | sprintf(fpts, "/tmp/tmppts%d", getpid()); |
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85 | char fcells[128]; |
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86 | sprintf(fcells, "/tmp/tmpcells%d", getpid()); |
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87 | |
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88 | std::ofstream ftmp(fpts); |
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89 | // save corners of bounding box first, to work around meshing |
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90 | // problems in voronoi utility |
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91 | ftmp << xymesh.rangeMin(Rappture::xaxis) << " " |
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92 | << xymesh.rangeMin(Rappture::yaxis) << std::endl; |
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93 | ftmp << xymesh.rangeMax(Rappture::xaxis) << " " |
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94 | << xymesh.rangeMin(Rappture::yaxis) << std::endl; |
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95 | ftmp << xymesh.rangeMax(Rappture::xaxis) << " " |
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96 | << xymesh.rangeMax(Rappture::yaxis) << std::endl; |
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97 | ftmp << xymesh.rangeMin(Rappture::xaxis) << " " |
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98 | << xymesh.rangeMax(Rappture::yaxis) << std::endl; |
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99 | for (int i=0; i < nxy; i++) { |
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100 | ftmp << xymesh.atNode(i).x() << " " << xymesh.atNode(i).y() << std::endl; |
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101 | } |
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102 | ftmp.close(); |
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103 | |
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104 | char cmdstr[512]; |
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105 | sprintf(cmdstr, "voronoi -t < %s > %s", fpts, fcells); |
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106 | if (system(cmdstr) == 0) { |
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107 | int cx, cy, cz; |
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108 | std::ifstream ftri(fcells); |
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109 | while (!ftri.eof()) { |
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110 | ftri.getline(line,sizeof(line)-1); |
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111 | if (sscanf(line, "%d %d %d", &cx, &cy, &cz) == 3) { |
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112 | if (cx >= 4 && cy >= 4 && cz >= 4) { |
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113 | // skip first 4 boundary points |
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114 | xymesh.addCell(cx-4, cy-4, cz-4); |
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115 | } |
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116 | } |
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117 | } |
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118 | ftri.close(); |
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119 | } else { |
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120 | result.error("triangularization failed"); |
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121 | return NULL; |
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122 | } |
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123 | unlink(fpts), unlink(fcells); |
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124 | } else if (sscanf(start, "object %d class regulararray count %d", &dummy, &nz) == 2) { |
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125 | // found z-grid |
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126 | } else if (sscanf(start, "origin %lg %lg %lg", &x0, &y0, &z0) == 3) { |
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127 | // found origin |
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128 | } else if (sscanf(start, "delta %lg %lg %lg", &ddx, &ddy, &ddz) == 3) { |
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129 | int count = 0; |
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130 | // found one of the delta lines |
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131 | if (ddx != 0.0) { |
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132 | dx = ddx; |
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133 | count++; |
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134 | } |
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135 | if (ddy != 0.0) { |
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136 | dy = ddy; |
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137 | count++; |
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138 | } |
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139 | if (ddz != 0.0) { |
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140 | dz = ddz; |
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141 | count++; |
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142 | } |
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143 | if (count > 1) { |
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144 | result.addError("don't know how to handle multiple non-zero" |
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145 | " delta values"); |
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146 | return NULL; |
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147 | } |
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148 | } else if (sscanf(start, "object %d class array type %s rank 0 items %d data follows", &dummy, type, &npts) == 3) { |
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149 | if (isrect && (npts != nx*ny*nz)) { |
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150 | result.addError("inconsistent data: expected %d points " |
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151 | " but found %d points", nx*ny*nz, npts); |
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152 | return NULL; |
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153 | } else if (!isrect && (npts != nxy*nz)) { |
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154 | result.addError("inconsistent data: expected %d points " |
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155 | " but found %d points", nxy*nz, npts); |
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156 | return NULL; |
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157 | } |
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158 | break; |
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159 | } else if (sscanf(start, "object %d class array type %s rank 0 times %d data follows", &dummy, type, &npts) == 3) { |
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160 | if (npts != nx*ny*nz) { |
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161 | result.addError("inconsistent data: expected %d points " |
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162 | " but found %d points", nx*ny*nz, npts); |
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163 | return NULL; |
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164 | } |
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165 | break; |
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166 | } |
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167 | } |
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168 | } while (!fin.eof()); |
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169 | |
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170 | TRACE("found nx=%d ny=%d, nz=%d, x0=%f, y0=%f, z0=%f\n", |
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171 | nx, ny, nz, x0, y0, z0); |
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172 | // read data points |
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173 | if (fin.eof() && (npts > 0)) { |
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174 | result.addError("EOF found: expecting %d points", npts); |
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175 | return NULL; |
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176 | } |
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177 | Volume *volPtr = NULL; |
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178 | if (isrect) { |
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179 | double dval[6]; |
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180 | int nread = 0; |
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181 | int ix = 0; |
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182 | int iy = 0; |
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183 | int iz = 0; |
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184 | float* data = new float[nx * ny * nz * 4]; |
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185 | memset(data, 0, nx*ny*nz*4); |
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186 | double vmin = 1e21; |
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187 | double nzero_min = 1e21; |
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188 | double vmax = -1e21; |
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189 | |
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190 | |
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191 | while (!fin.eof() && nread < npts) { |
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192 | fin.getline(line,sizeof(line)-1); |
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193 | int n = sscanf(line, "%lg %lg %lg %lg %lg %lg", &dval[0], &dval[1], &dval[2], &dval[3], &dval[4], &dval[5]); |
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194 | |
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195 | for (int p=0; p < n; p++) { |
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196 | int nindex = (iz*nx*ny + iy*nx + ix) * 4; |
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197 | data[nindex] = dval[p]; |
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198 | |
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199 | if (dval[p] < vmin) { |
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200 | vmin = dval[p]; |
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201 | } else if (dval[p] > vmax) { |
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202 | vmax = dval[p]; |
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203 | } |
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204 | if (dval[p] != 0.0f && dval[p] < nzero_min) { |
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205 | nzero_min = dval[p]; |
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206 | } |
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207 | |
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208 | nread++; |
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209 | if (++iz >= nz) { |
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210 | iz = 0; |
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211 | if (++iy >= ny) { |
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212 | iy = 0; |
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213 | ++ix; |
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214 | } |
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215 | } |
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216 | } |
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217 | } |
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218 | |
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219 | // make sure that we read all of the expected points |
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220 | if (nread != nx*ny*nz) { |
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221 | result.addError("inconsistent data: expected %d points " |
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222 | " but found %d points", nx*ny*nz, nread); |
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223 | return NULL; |
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224 | } |
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225 | |
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226 | double dv = vmax - vmin; |
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227 | int count = nx*ny*nz; |
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228 | int ngen = 0; |
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229 | double v; |
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230 | if (dv == 0.0) { |
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231 | dv = 1.0; |
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232 | } |
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233 | |
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234 | for (int i = 0; i < count; ++i) { |
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235 | v = data[ngen]; |
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236 | // scale all values [0-1], -1 => out of bounds |
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237 | // |
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238 | // INSOO |
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239 | v = (isnan(v)) ? -1.0 : (v - vmin)/dv; |
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240 | data[ngen] = v; |
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241 | ngen += 4; |
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242 | } |
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243 | |
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244 | computeSimpleGradient(data, nx, ny, nz); |
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245 | |
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246 | dx = nx; |
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247 | dy = ny; |
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248 | dz = nz; |
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249 | |
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250 | volPtr = NanoVis::load_volume(tag, nx, ny, nz, 4, data, |
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251 | vmin, vmax, nzero_min); |
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252 | volPtr->xAxis.SetRange(x0, x0 + (nx * dx)); |
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253 | volPtr->yAxis.SetRange(y0, y0 + (ny * dy)); |
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254 | volPtr->zAxis.SetRange(z0, z0 + (nz * dz)); |
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255 | volPtr->wAxis.SetRange(vmin, vmax); |
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256 | volPtr->update_pending = true; |
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257 | delete [] data; |
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258 | |
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259 | } else { |
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260 | Rappture::Mesh1D zgrid(z0, z0+nz*dz, nz); |
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261 | Rappture::FieldPrism3D field(xymesh, zgrid); |
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262 | |
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263 | double dval; |
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264 | int nread = 0; |
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265 | int ixy = 0; |
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266 | int iz = 0; |
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267 | while (!fin.eof() && nread < npts) { |
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268 | fin >> dval; |
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269 | if (fin.fail()) { |
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270 | result.addError("after %d of %d points: can't read number", |
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271 | nread, npts); |
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272 | return NULL; |
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273 | } else { |
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274 | int nid = nxy*iz + ixy; |
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275 | field.define(nid, dval); |
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276 | |
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277 | nread++; |
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278 | if (++iz >= nz) { |
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279 | iz = 0; |
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280 | ixy++; |
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281 | } |
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282 | } |
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283 | } |
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284 | |
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285 | // make sure that we read all of the expected points |
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286 | if (nread != nxy*nz) { |
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287 | result.addError("inconsistent data: expected %d points " |
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288 | "but found %d points", nxy*nz, nread); |
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289 | return NULL; |
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290 | } |
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291 | |
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292 | // figure out a good mesh spacing |
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293 | int nsample = 30; |
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294 | x0 = field.rangeMin(Rappture::xaxis); |
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295 | dx = field.rangeMax(Rappture::xaxis) - field.rangeMin(Rappture::xaxis); |
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296 | y0 = field.rangeMin(Rappture::yaxis); |
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297 | dy = field.rangeMax(Rappture::yaxis) - field.rangeMin(Rappture::yaxis); |
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298 | z0 = field.rangeMin(Rappture::zaxis); |
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299 | dz = field.rangeMax(Rappture::zaxis) - field.rangeMin(Rappture::zaxis); |
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300 | double dmin = pow((dx*dy*dz)/(nsample*nsample*nsample), 0.333); |
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301 | |
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302 | nx = (int)ceil(dx/dmin); |
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303 | ny = (int)ceil(dy/dmin); |
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304 | nz = (int)ceil(dz/dmin); |
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305 | #ifndef NV40 |
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306 | // must be an even power of 2 for older cards |
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307 | nx = (int)pow(2.0, ceil(log10((double)nx)/log10(2.0))); |
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308 | ny = (int)pow(2.0, ceil(log10((double)ny)/log10(2.0))); |
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309 | nz = (int)pow(2.0, ceil(log10((double)nz)/log10(2.0))); |
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310 | #endif |
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311 | float *data = new float[4*nx*ny*nz]; |
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312 | |
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313 | double vmin = field.valueMin(); |
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314 | double dv = field.valueMax() - field.valueMin(); |
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315 | if (dv == 0.0) { |
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316 | dv = 1.0; |
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317 | } |
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318 | // generate the uniformly sampled data that we need for a volume |
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319 | int ngen = 0; |
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320 | double nzero_min = 0.0; |
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321 | for (iz=0; iz < nz; iz++) { |
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322 | double zval = z0 + iz*dmin; |
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323 | for (int iy=0; iy < ny; iy++) { |
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324 | double yval = y0 + iy*dmin; |
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325 | for (int ix=0; ix < nx; ix++) { |
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326 | double xval = x0 + ix*dmin; |
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327 | double v = field.value(xval,yval,zval); |
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328 | |
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329 | if (v != 0.0f && v < nzero_min) { |
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330 | nzero_min = v; |
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331 | } |
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332 | // scale all values [0-1], -1 => out of bounds |
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333 | v = (isnan(v)) ? -1.0 : (v - vmin)/dv; |
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334 | data[ngen] = v; |
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335 | |
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336 | ngen += 4; |
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337 | } |
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338 | } |
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339 | } |
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340 | |
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341 | // FIXME: This next section of code should be replaced by a |
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342 | // call to the computeSimpleGradient() function. There is a slight |
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343 | // difference in the code below and the aforementioned function |
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344 | // in that the commented out lines in the else statements are |
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345 | // different. |
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346 | // |
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347 | // Compute the gradient of this data. BE CAREFUL: center |
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348 | // calculation on each node to avoid skew in either direction. |
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349 | ngen = 0; |
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350 | for (int iz=0; iz < nz; iz++) { |
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351 | for (int iy=0; iy < ny; iy++) { |
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352 | for (int ix=0; ix < nx; ix++) { |
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353 | // gradient in x-direction |
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354 | //double valm1 = (ix == 0) ? 0.0 : data[ngen-4]; |
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355 | //double valp1 = (ix == nx-1) ? 0.0 : data[ngen+4]; |
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356 | double valm1 = (ix == 0) ? 0.0 : data[ngen-4]; |
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357 | double valp1 = (ix == nx-1) ? 0.0 : data[ngen+4]; |
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358 | if (valm1 < 0 || valp1 < 0) { |
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359 | data[ngen+1] = 0.0; |
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360 | } else { |
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361 | data[ngen+1] = valp1-valm1; // assume dx=1 |
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362 | //data[ngen+1] = ((valp1-valm1) + 1.0) * 0.5; // assume dz=1 |
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363 | } |
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364 | |
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365 | // gradient in y-direction |
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366 | valm1 = (iy == 0) ? 0.0 : data[ngen-4*nx]; |
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367 | valp1 = (iy == ny-1) ? 0.0 : data[ngen+4*nx]; |
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368 | if (valm1 < 0 || valp1 < 0) { |
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369 | data[ngen+2] = 0.0; |
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370 | } else { |
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371 | data[ngen+2] = valp1-valm1; // assume dy=1 |
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372 | //data[ngen+2] = ((valp1-valm1) + 1.0) * 0.5; // assume dz=1 |
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373 | } |
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374 | |
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375 | // gradient in z-direction |
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376 | valm1 = (iz == 0) ? 0.0 : data[ngen-4*nx*ny]; |
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377 | valp1 = (iz == nz-1) ? 0.0 : data[ngen+4*nx*ny]; |
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378 | if (valm1 < 0 || valp1 < 0) { |
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379 | data[ngen+3] = 0.0; |
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380 | } else { |
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381 | data[ngen+3] = valp1-valm1; // assume dz=1 |
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382 | //data[ngen+3] = ((valp1-valm1) + 1.0) * 0.5; // assume dz=1 |
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383 | } |
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384 | |
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385 | ngen += 4; |
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386 | } |
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387 | } |
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388 | } |
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389 | |
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390 | volPtr = NanoVis::load_volume(tag, nx, ny, nz, 4, data, |
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391 | field.valueMin(), field.valueMax(), nzero_min); |
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392 | volPtr->xAxis.SetRange(field.rangeMin(Rappture::xaxis), |
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393 | field.rangeMax(Rappture::xaxis)); |
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394 | volPtr->yAxis.SetRange(field.rangeMin(Rappture::yaxis), |
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395 | field.rangeMax(Rappture::yaxis)); |
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396 | volPtr->zAxis.SetRange(field.rangeMin(Rappture::zaxis), |
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397 | field.rangeMax(Rappture::zaxis)); |
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398 | volPtr->wAxis.SetRange(field.valueMin(), field.valueMax()); |
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399 | volPtr->update_pending = true; |
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400 | delete [] data; |
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401 | } |
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402 | // |
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403 | // Center this new volume on the origin. |
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404 | // |
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405 | float dx0 = -0.5; |
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406 | float dy0 = -0.5*dy/dx; |
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407 | float dz0 = -0.5*dz/dx; |
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408 | if (volPtr) { |
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409 | volPtr->location(Vector3(dx0, dy0, dz0)); |
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410 | TRACE("volume moved\n"); |
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411 | } |
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412 | return volPtr; |
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413 | } |
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414 | |
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415 | Volume * |
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416 | load_volume_stream(Rappture::Outcome &result, const char *tag, |
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417 | std::iostream& fin) |
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418 | { |
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419 | TRACE("load_volume_stream\n"); |
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420 | |
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421 | Rappture::MeshTri2D xymesh; |
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422 | int dummy, nx, ny, nz, nxy, npts; |
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423 | double x0, y0, z0, dx, dy, dz, ddx, ddy, ddz; |
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424 | char line[128], type[128], *start; |
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425 | |
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426 | int isrect = 1; |
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427 | |
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428 | dx = dy = dz = 0.0; // Suppress compiler warning. |
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429 | x0 = y0 = z0 = 0.0; // May not have an origin line. |
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430 | nx = ny = nz = npts = nxy = 0; |
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431 | while (!fin.eof()) { |
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432 | fin.getline(line, sizeof(line) - 1); |
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433 | if (fin.fail()) { |
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434 | result.error("error in data stream"); |
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435 | return NULL; |
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436 | } |
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437 | for (start=line; *start == ' ' || *start == '\t'; start++) |
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438 | ; // skip leading blanks |
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439 | |
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440 | if (*start != '#') { // skip comment lines |
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441 | if (sscanf(start, "object %d class gridpositions counts %d %d %d", &dummy, &nx, &ny, &nz) == 4) { |
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442 | // found grid size |
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443 | isrect = 1; |
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444 | } else if (sscanf(start, "object %d class array type float rank 1 shape 3 items %d data follows", &dummy, &nxy) == 2) { |
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445 | isrect = 0; |
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446 | |
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447 | double xx, yy, zz; |
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448 | for (int i=0; i < nxy; i++) { |
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449 | fin.getline(line,sizeof(line)-1); |
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450 | if (sscanf(line, "%lg %lg %lg", &xx, &yy, &zz) == 3) { |
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451 | xymesh.addNode( Rappture::Node2D(xx,yy) ); |
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452 | } |
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453 | } |
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454 | |
---|
455 | char fpts[128]; |
---|
456 | sprintf(fpts, "/tmp/tmppts%d", getpid()); |
---|
457 | char fcells[128]; |
---|
458 | sprintf(fcells, "/tmp/tmpcells%d", getpid()); |
---|
459 | |
---|
460 | std::ofstream ftmp(fpts); |
---|
461 | // save corners of bounding box first, to work around meshing |
---|
462 | // problems in voronoi utility |
---|
463 | ftmp << xymesh.rangeMin(Rappture::xaxis) << " " |
---|
464 | << xymesh.rangeMin(Rappture::yaxis) << std::endl; |
---|
465 | ftmp << xymesh.rangeMax(Rappture::xaxis) << " " |
---|
466 | << xymesh.rangeMin(Rappture::yaxis) << std::endl; |
---|
467 | ftmp << xymesh.rangeMax(Rappture::xaxis) << " " |
---|
468 | << xymesh.rangeMax(Rappture::yaxis) << std::endl; |
---|
469 | ftmp << xymesh.rangeMin(Rappture::xaxis) << " " |
---|
470 | << xymesh.rangeMax(Rappture::yaxis) << std::endl; |
---|
471 | for (int i=0; i < nxy; i++) { |
---|
472 | ftmp << xymesh.atNode(i).x() << " " << xymesh.atNode(i).y() << std::endl; |
---|
473 | |
---|
474 | } |
---|
475 | ftmp.close(); |
---|
476 | |
---|
477 | char cmdstr[512]; |
---|
478 | sprintf(cmdstr, "voronoi -t < %s > %s", fpts, fcells); |
---|
479 | if (system(cmdstr) == 0) { |
---|
480 | int cx, cy, cz; |
---|
481 | std::ifstream ftri(fcells); |
---|
482 | while (!ftri.eof()) { |
---|
483 | ftri.getline(line,sizeof(line)-1); |
---|
484 | if (sscanf(line, "%d %d %d", &cx, &cy, &cz) == 3) { |
---|
485 | if (cx >= 4 && cy >= 4 && cz >= 4) { |
---|
486 | // skip first 4 boundary points |
---|
487 | xymesh.addCell(cx-4, cy-4, cz-4); |
---|
488 | } |
---|
489 | } |
---|
490 | } |
---|
491 | ftri.close(); |
---|
492 | } else { |
---|
493 | result.error("triangularization failed"); |
---|
494 | return NULL; |
---|
495 | } |
---|
496 | unlink(fpts); |
---|
497 | unlink(fcells); |
---|
498 | } else if (sscanf(start, "object %d class regulararray count %d", &dummy, &nz) == 2) { |
---|
499 | // found z-grid |
---|
500 | } else if (sscanf(start, "origin %lg %lg %lg", &x0, &y0, &z0) == 3) { |
---|
501 | // found origin |
---|
502 | } else if (sscanf(start, "delta %lg %lg %lg", &ddx, &ddy, &ddz) == 3) { |
---|
503 | // found one of the delta lines |
---|
504 | if (ddx != 0.0) { dx = ddx; } |
---|
505 | else if (ddy != 0.0) { dy = ddy; } |
---|
506 | else if (ddz != 0.0) { dz = ddz; } |
---|
507 | } else if (sscanf(start, "object %d class array type %s rank 0 items %d data follows", &dummy, type, &npts) == 3) { |
---|
508 | if (isrect && (npts != nx*ny*nz)) { |
---|
509 | result.addError("inconsistent data: expected %d points" |
---|
510 | " but found %d points", nx*ny*nz, npts); |
---|
511 | return NULL; |
---|
512 | } else if (!isrect && (npts != nxy*nz)) { |
---|
513 | result.addError("inconsistent data: expected %d points" |
---|
514 | " but found %d points", nx*ny*nz, npts); |
---|
515 | return NULL; |
---|
516 | } |
---|
517 | break; |
---|
518 | } else if (sscanf(start, "object %d class array type %s rank 0 times %d data follows", &dummy, type, &npts) == 3) { |
---|
519 | if (npts != nx*ny*nz) { |
---|
520 | result.addError("inconsistent data: expected %d points" |
---|
521 | " but found %d points", nx*ny*nz, npts); |
---|
522 | return NULL; |
---|
523 | } |
---|
524 | break; |
---|
525 | } |
---|
526 | } |
---|
527 | } |
---|
528 | // read data points |
---|
529 | if (fin.eof()) { |
---|
530 | result.error("data not found in stream"); |
---|
531 | return NULL; |
---|
532 | } |
---|
533 | Volume *volPtr = 0; |
---|
534 | if (isrect) { |
---|
535 | Rappture::Mesh1D xgrid(x0, x0+nx*dx, nx); |
---|
536 | Rappture::Mesh1D ygrid(y0, y0+ny*dy, ny); |
---|
537 | Rappture::Mesh1D zgrid(z0, z0+nz*dz, nz); |
---|
538 | Rappture::FieldRect3D field(xgrid, ygrid, zgrid); |
---|
539 | |
---|
540 | double dval[6]; |
---|
541 | int nread = 0; |
---|
542 | int ix = 0; |
---|
543 | int iy = 0; |
---|
544 | int iz = 0; |
---|
545 | while (!fin.eof() && nread < npts) { |
---|
546 | fin.getline(line,sizeof(line)-1); |
---|
547 | if (fin.fail()) { |
---|
548 | result.addError("error reading data points"); |
---|
549 | return NULL; |
---|
550 | } |
---|
551 | int n = sscanf(line, "%lg %lg %lg %lg %lg %lg", &dval[0], &dval[1], &dval[2], &dval[3], &dval[4], &dval[5]); |
---|
552 | |
---|
553 | for (int p=0; p < n; p++) { |
---|
554 | int nindex = iz*nx*ny + iy*nx + ix; |
---|
555 | field.define(nindex, dval[p]); |
---|
556 | nread++; |
---|
557 | if (++iz >= nz) { |
---|
558 | iz = 0; |
---|
559 | if (++iy >= ny) { |
---|
560 | iy = 0; |
---|
561 | ++ix; |
---|
562 | } |
---|
563 | } |
---|
564 | } |
---|
565 | } |
---|
566 | |
---|
567 | // make sure that we read all of the expected points |
---|
568 | if (nread != nx*ny*nz) { |
---|
569 | result.addError("inconsistent data: expected %d points" |
---|
570 | " but found %d points", nx*ny*nz, npts); |
---|
571 | return NULL; |
---|
572 | } |
---|
573 | |
---|
574 | // figure out a good mesh spacing |
---|
575 | int nsample = 30; |
---|
576 | dx = field.rangeMax(Rappture::xaxis) - field.rangeMin(Rappture::xaxis); |
---|
577 | dy = field.rangeMax(Rappture::yaxis) - field.rangeMin(Rappture::yaxis); |
---|
578 | dz = field.rangeMax(Rappture::zaxis) - field.rangeMin(Rappture::zaxis); |
---|
579 | double dmin = pow((dx*dy*dz)/(nsample*nsample*nsample), 0.333); |
---|
580 | |
---|
581 | nx = (int)ceil(dx/dmin); |
---|
582 | ny = (int)ceil(dy/dmin); |
---|
583 | nz = (int)ceil(dz/dmin); |
---|
584 | |
---|
585 | #ifndef NV40 |
---|
586 | // must be an even power of 2 for older cards |
---|
587 | nx = (int)pow(2.0, ceil(log10((double)nx)/log10(2.0))); |
---|
588 | ny = (int)pow(2.0, ceil(log10((double)ny)/log10(2.0))); |
---|
589 | nz = (int)pow(2.0, ceil(log10((double)nz)/log10(2.0))); |
---|
590 | #endif |
---|
591 | |
---|
592 | //#define _SOBEL |
---|
593 | #ifdef _SOBEL_ |
---|
594 | const int step = 1; |
---|
595 | float *cdata = new float[nx*ny*nz * step]; |
---|
596 | int ngen = 0; |
---|
597 | double nzero_min = 0.0; |
---|
598 | for (int iz=0; iz < nz; iz++) { |
---|
599 | double zval = z0 + iz*dmin; |
---|
600 | for (int iy=0; iy < ny; iy++) { |
---|
601 | double yval = y0 + iy*dmin; |
---|
602 | for (int ix=0; ix < nx; ix++) { |
---|
603 | double xval = x0 + ix*dmin; |
---|
604 | double v = field.value(xval,yval,zval); |
---|
605 | |
---|
606 | if (v != 0.0f && v < nzero_min) { |
---|
607 | nzero_min = v; |
---|
608 | } |
---|
609 | |
---|
610 | // scale all values [0-1], -1 => out of bounds |
---|
611 | v = (isnan(v)) ? -1.0 : v; |
---|
612 | |
---|
613 | cdata[ngen] = v; |
---|
614 | ngen += step; |
---|
615 | } |
---|
616 | } |
---|
617 | } |
---|
618 | |
---|
619 | float* data = computeGradient(cdata, nx, ny, nz, field.valueMin(), |
---|
620 | field.valueMax()); |
---|
621 | #else |
---|
622 | double vmin = field.valueMin(); |
---|
623 | double vmax = field.valueMax(); |
---|
624 | double nzero_min = 0; |
---|
625 | float *data = new float[nx*ny*nz * 4]; |
---|
626 | double dv = vmax - vmin; |
---|
627 | int ngen = 0; |
---|
628 | if (dv == 0.0) dv = 1.0; |
---|
629 | |
---|
630 | for (int iz=0; iz < nz; iz++) { |
---|
631 | double zval = z0 + iz*dmin; |
---|
632 | for (int iy=0; iy < ny; iy++) { |
---|
633 | double yval = y0 + iy*dmin; |
---|
634 | for (int ix=0; ix < nx; ix++) { |
---|
635 | double xval = x0 + ix*dmin; |
---|
636 | double v = field.value(xval,yval,zval); |
---|
637 | |
---|
638 | // scale all values [0-1], -1 => out of bounds |
---|
639 | v = (isnan(v)) ? -1.0 : (v - vmin)/dv; |
---|
640 | |
---|
641 | data[ngen] = v; |
---|
642 | ngen += 4; |
---|
643 | } |
---|
644 | } |
---|
645 | } |
---|
646 | |
---|
647 | computeSimpleGradient(data, nx, ny, nz); |
---|
648 | #endif |
---|
649 | |
---|
650 | #ifdef notdef |
---|
651 | for (int i=0; i<nx*ny*nz; i++) { |
---|
652 | TRACE("enddata[%i] = %lg\n",i,data[i]); |
---|
653 | } |
---|
654 | #endif |
---|
655 | TRACE("nx = %i ny = %i nz = %i\n",nx,ny,nz); |
---|
656 | TRACE("dx = %lg dy = %lg dz = %lg\n",dx,dy,dz); |
---|
657 | TRACE("dataMin = %lg\tdataMax = %lg\tnzero_min = %lg\n", |
---|
658 | field.valueMin(),field.valueMax(),nzero_min); |
---|
659 | |
---|
660 | volPtr = NanoVis::load_volume(tag, nx, ny, nz, 4, data, |
---|
661 | field.valueMin(), field.valueMax(), nzero_min); |
---|
662 | volPtr->xAxis.SetRange(field.rangeMin(Rappture::xaxis), |
---|
663 | field.rangeMax(Rappture::xaxis)); |
---|
664 | volPtr->yAxis.SetRange(field.rangeMin(Rappture::yaxis), |
---|
665 | field.rangeMax(Rappture::yaxis)); |
---|
666 | volPtr->zAxis.SetRange(field.rangeMin(Rappture::zaxis), |
---|
667 | field.rangeMax(Rappture::zaxis)); |
---|
668 | volPtr->wAxis.SetRange(field.valueMin(), field.valueMax()); |
---|
669 | volPtr->update_pending = true; |
---|
670 | // TBD.. |
---|
671 | // POINTSET |
---|
672 | /* |
---|
673 | PointSet* pset = new PointSet(); |
---|
674 | pset->initialize(volume[index], (float*) data); |
---|
675 | pset->setVisible(true); |
---|
676 | NanoVis::pointSet.push_back(pset); |
---|
677 | updateColor(pset); |
---|
678 | NanoVis::volume[index]->pointsetIndex = NanoVis::pointSet.size() - 1; |
---|
679 | */ |
---|
680 | |
---|
681 | delete [] data; |
---|
682 | |
---|
683 | } else { |
---|
684 | Rappture::Mesh1D zgrid(z0, z0+nz*dz, nz); |
---|
685 | Rappture::FieldPrism3D field(xymesh, zgrid); |
---|
686 | |
---|
687 | double dval; |
---|
688 | int nread = 0; |
---|
689 | int ixy = 0; |
---|
690 | int iz = 0; |
---|
691 | while (!fin.eof() && nread < npts) { |
---|
692 | fin >> dval; |
---|
693 | if (fin.fail()) { |
---|
694 | result.addError("after %d of %d points: can't read number", |
---|
695 | nread, npts); |
---|
696 | return NULL; |
---|
697 | } else { |
---|
698 | int nid = nxy*iz + ixy; |
---|
699 | field.define(nid, dval); |
---|
700 | |
---|
701 | nread++; |
---|
702 | if (++iz >= nz) { |
---|
703 | iz = 0; |
---|
704 | ixy++; |
---|
705 | } |
---|
706 | } |
---|
707 | } |
---|
708 | |
---|
709 | // make sure that we read all of the expected points |
---|
710 | if (nread != nxy*nz) { |
---|
711 | result.addError("inconsistent data: expected %d points" |
---|
712 | " but found %d points", nx*ny*nz, npts); |
---|
713 | return NULL; |
---|
714 | } |
---|
715 | |
---|
716 | // figure out a good mesh spacing |
---|
717 | int nsample = 30; |
---|
718 | x0 = field.rangeMin(Rappture::xaxis); |
---|
719 | dx = field.rangeMax(Rappture::xaxis) - field.rangeMin(Rappture::xaxis); |
---|
720 | y0 = field.rangeMin(Rappture::yaxis); |
---|
721 | dy = field.rangeMax(Rappture::yaxis) - field.rangeMin(Rappture::yaxis); |
---|
722 | z0 = field.rangeMin(Rappture::zaxis); |
---|
723 | dz = field.rangeMax(Rappture::zaxis) - field.rangeMin(Rappture::zaxis); |
---|
724 | double dmin = pow((dx*dy*dz)/(nsample*nsample*nsample), 0.333); |
---|
725 | |
---|
726 | nx = (int)ceil(dx/dmin); |
---|
727 | ny = (int)ceil(dy/dmin); |
---|
728 | nz = (int)ceil(dz/dmin); |
---|
729 | #ifndef NV40 |
---|
730 | // must be an even power of 2 for older cards |
---|
731 | nx = (int)pow(2.0, ceil(log10((double)nx)/log10(2.0))); |
---|
732 | ny = (int)pow(2.0, ceil(log10((double)ny)/log10(2.0))); |
---|
733 | nz = (int)pow(2.0, ceil(log10((double)nz)/log10(2.0))); |
---|
734 | #endif |
---|
735 | float *data = new float[4*nx*ny*nz]; |
---|
736 | |
---|
737 | double vmin = field.valueMin(); |
---|
738 | double dv = field.valueMax() - field.valueMin(); |
---|
739 | if (dv == 0.0) { dv = 1.0; } |
---|
740 | |
---|
741 | // generate the uniformly sampled data that we need for a volume |
---|
742 | int ngen = 0; |
---|
743 | double nzero_min = 0.0; |
---|
744 | for (iz=0; iz < nz; iz++) { |
---|
745 | double zval = z0 + iz*dmin; |
---|
746 | for (int iy=0; iy < ny; iy++) { |
---|
747 | double yval = y0 + iy*dmin; |
---|
748 | for (int ix=0; ix < nx; ix++) { |
---|
749 | double xval = x0 + ix*dmin; |
---|
750 | double v = field.value(xval,yval,zval); |
---|
751 | |
---|
752 | if (v != 0.0f && v < nzero_min) { |
---|
753 | nzero_min = v; |
---|
754 | } |
---|
755 | // scale all values [0-1], -1 => out of bounds |
---|
756 | v = (isnan(v)) ? -1.0 : (v - vmin)/dv; |
---|
757 | data[ngen] = v; |
---|
758 | |
---|
759 | ngen += 4; |
---|
760 | } |
---|
761 | } |
---|
762 | } |
---|
763 | |
---|
764 | // Compute the gradient of this data. BE CAREFUL: center |
---|
765 | // calculation on each node to avoid skew in either direction. |
---|
766 | ngen = 0; |
---|
767 | for (int iz=0; iz < nz; iz++) { |
---|
768 | for (int iy=0; iy < ny; iy++) { |
---|
769 | for (int ix=0; ix < nx; ix++) { |
---|
770 | // gradient in x-direction |
---|
771 | double valm1 = (ix == 0) ? 0.0 : data[ngen-1]; |
---|
772 | double valp1 = (ix == nx-1) ? 0.0 : data[ngen+1]; |
---|
773 | if (valm1 < 0 || valp1 < 0) { |
---|
774 | data[ngen+1] = 0.0; |
---|
775 | } else { |
---|
776 | data[ngen+1] = valp1-valm1; // assume dx=1 |
---|
777 | //data[ngen+1] = ((valp1-valm1) + 1) * 0.5; // assume dx=1 (ISO) |
---|
778 | } |
---|
779 | |
---|
780 | // gradient in y-direction |
---|
781 | valm1 = (iy == 0) ? 0.0 : data[ngen-4*nx]; |
---|
782 | valp1 = (iy == ny-1) ? 0.0 : data[ngen+4*nx]; |
---|
783 | if (valm1 < 0 || valp1 < 0) { |
---|
784 | data[ngen+2] = 0.0; |
---|
785 | } else { |
---|
786 | data[ngen+2] = valp1-valm1; // assume dy=1 |
---|
787 | //data[ngen+2] = ((valp1-valm1) + 1) * 0.5; // assume dy=1 (ISO) |
---|
788 | } |
---|
789 | |
---|
790 | // gradient in z-direction |
---|
791 | valm1 = (iz == 0) ? 0.0 : data[ngen-4*nx*ny]; |
---|
792 | valp1 = (iz == nz-1) ? 0.0 : data[ngen+4*nx*ny]; |
---|
793 | if (valm1 < 0 || valp1 < 0) { |
---|
794 | data[ngen+3] = 0.0; |
---|
795 | } else { |
---|
796 | data[ngen+3] = valp1-valm1; // assume dz=1 |
---|
797 | //data[ngen+3] = ((valp1-valm1) + 1) * 0.5; // assume dz=1 (ISO) |
---|
798 | } |
---|
799 | |
---|
800 | ngen += 4; |
---|
801 | } |
---|
802 | } |
---|
803 | } |
---|
804 | |
---|
805 | volPtr = NanoVis::load_volume(tag, nx, ny, nz, 4, data, |
---|
806 | field.valueMin(), field.valueMax(), nzero_min); |
---|
807 | volPtr->xAxis.SetRange(field.rangeMin(Rappture::xaxis), |
---|
808 | field.rangeMax(Rappture::xaxis)); |
---|
809 | volPtr->yAxis.SetRange(field.rangeMin(Rappture::yaxis), |
---|
810 | field.rangeMax(Rappture::yaxis)); |
---|
811 | volPtr->zAxis.SetRange(field.rangeMin(Rappture::zaxis), |
---|
812 | field.rangeMax(Rappture::zaxis)); |
---|
813 | volPtr->wAxis.SetRange(field.valueMin(), field.valueMax()); |
---|
814 | volPtr->update_pending = true; |
---|
815 | // TBD.. |
---|
816 | // POINTSET |
---|
817 | /* |
---|
818 | PointSet* pset = new PointSet(); |
---|
819 | pset->initialize(volume[index], (float*) data); |
---|
820 | pset->setVisible(true); |
---|
821 | NanoVis::pointSet.push_back(pset); |
---|
822 | updateColor(pset); |
---|
823 | NanoVis::volume[index]->pointsetIndex = NanoVis::pointSet.size() - 1; |
---|
824 | */ |
---|
825 | |
---|
826 | |
---|
827 | delete [] data; |
---|
828 | } |
---|
829 | |
---|
830 | // |
---|
831 | // Center this new volume on the origin. |
---|
832 | // |
---|
833 | float dx0 = -0.5; |
---|
834 | float dy0 = -0.5*dy/dx; |
---|
835 | float dz0 = -0.5*dz/dx; |
---|
836 | if (volPtr) { |
---|
837 | volPtr->location(Vector3(dx0, dy0, dz0)); |
---|
838 | } |
---|
839 | return volPtr; |
---|
840 | } |
---|
841 | |
---|
842 | |
---|
843 | Volume * |
---|
844 | load_volume_stream_insoo(Rappture::Outcome &result, const char *tag, |
---|
845 | std::iostream& fin) |
---|
846 | { |
---|
847 | TRACE("load_volume_stream\n"); |
---|
848 | |
---|
849 | Rappture::MeshTri2D xymesh; |
---|
850 | int dummy, nx, ny, nz, nxy, npts; |
---|
851 | double x0, y0, z0, dx, dy, dz, ddx, ddy, ddz; |
---|
852 | char line[128], type[128], *start; |
---|
853 | |
---|
854 | int isrect = 1; |
---|
855 | |
---|
856 | dx = dy = dz = 0.0; // Suppress compiler warning. |
---|
857 | x0 = y0 = z0 = 0.0; // May not have an origin line. |
---|
858 | nx = ny = nz = npts = nxy = 0; |
---|
859 | while (!fin.eof()) { |
---|
860 | fin.getline(line, sizeof(line) - 1); |
---|
861 | if (fin.fail()) { |
---|
862 | result.addError("line \"%s\"error in data stream"); |
---|
863 | return NULL; |
---|
864 | } |
---|
865 | for (start=line; *start == ' ' || *start == '\t'; start++) |
---|
866 | ; // skip leading blanks |
---|
867 | |
---|
868 | if (*start != '#') { // skip comment lines |
---|
869 | if (sscanf(start, "object %d class gridpositions counts %d %d %d", &dummy, &nx, &ny, &nz) == 4) { |
---|
870 | // found grid size |
---|
871 | isrect = 1; |
---|
872 | } else if (sscanf(start, "object %d class array type float rank 1 shape 3 items %d data follows", &dummy, &nxy) == 2) { |
---|
873 | isrect = 0; |
---|
874 | |
---|
875 | double xx, yy, zz; |
---|
876 | for (int i=0; i < nxy; i++) { |
---|
877 | fin.getline(line,sizeof(line)-1); |
---|
878 | if (sscanf(line, "%lg %lg %lg", &xx, &yy, &zz) == 3) { |
---|
879 | xymesh.addNode( Rappture::Node2D(xx,yy) ); |
---|
880 | } |
---|
881 | } |
---|
882 | |
---|
883 | char fpts[128]; |
---|
884 | sprintf(fpts, "/tmp/tmppts%d", getpid()); |
---|
885 | char fcells[128]; |
---|
886 | sprintf(fcells, "/tmp/tmpcells%d", getpid()); |
---|
887 | |
---|
888 | std::ofstream ftmp(fpts); |
---|
889 | // save corners of bounding box first, to work around meshing |
---|
890 | // problems in voronoi utility |
---|
891 | ftmp << xymesh.rangeMin(Rappture::xaxis) << " " |
---|
892 | << xymesh.rangeMin(Rappture::yaxis) << std::endl; |
---|
893 | ftmp << xymesh.rangeMax(Rappture::xaxis) << " " |
---|
894 | << xymesh.rangeMin(Rappture::yaxis) << std::endl; |
---|
895 | ftmp << xymesh.rangeMax(Rappture::xaxis) << " " |
---|
896 | << xymesh.rangeMax(Rappture::yaxis) << std::endl; |
---|
897 | ftmp << xymesh.rangeMin(Rappture::xaxis) << " " |
---|
898 | << xymesh.rangeMax(Rappture::yaxis) << std::endl; |
---|
899 | for (int i=0; i < nxy; i++) { |
---|
900 | ftmp << xymesh.atNode(i).x() << " " << xymesh.atNode(i).y() << std::endl; |
---|
901 | |
---|
902 | } |
---|
903 | ftmp.close(); |
---|
904 | |
---|
905 | char cmdstr[512]; |
---|
906 | sprintf(cmdstr, "voronoi -t < %s > %s", fpts, fcells); |
---|
907 | if (system(cmdstr) == 0) { |
---|
908 | int cx, cy, cz; |
---|
909 | std::ifstream ftri(fcells); |
---|
910 | while (!ftri.eof()) { |
---|
911 | ftri.getline(line,sizeof(line)-1); |
---|
912 | if (sscanf(line, "%d %d %d", &cx, &cy, &cz) == 3) { |
---|
913 | if (cx >= 4 && cy >= 4 && cz >= 4) { |
---|
914 | // skip first 4 boundary points |
---|
915 | xymesh.addCell(cx-4, cy-4, cz-4); |
---|
916 | } |
---|
917 | } |
---|
918 | } |
---|
919 | ftri.close(); |
---|
920 | } else { |
---|
921 | result.error("triangularization failed"); |
---|
922 | return NULL; |
---|
923 | } |
---|
924 | unlink(fpts), unlink(fcells); |
---|
925 | } else if (sscanf(start, "object %d class regulararray count %d", &dummy, &nz) == 2) { |
---|
926 | // found z-grid |
---|
927 | } else if (sscanf(start, "origin %lg %lg %lg", &x0, &y0, &z0) == 3) { |
---|
928 | // found origin |
---|
929 | } else if (sscanf(start, "delta %lg %lg %lg", &ddx, &ddy, &ddz) == 3) { |
---|
930 | // found one of the delta lines |
---|
931 | if (ddx != 0.0) { dx = ddx; } |
---|
932 | else if (ddy != 0.0) { dy = ddy; } |
---|
933 | else if (ddz != 0.0) { dz = ddz; } |
---|
934 | } else if (sscanf(start, "object %d class array type %s rank 0 items %d data follows", &dummy, type, &npts) == 3) { |
---|
935 | if (isrect && (npts != nx*ny*nz)) { |
---|
936 | result.addError("inconsistent data: expected %d points" |
---|
937 | " but found %d points", nx*ny*nz, npts); |
---|
938 | return NULL; |
---|
939 | } else if (!isrect && (npts != nxy*nz)) { |
---|
940 | result.addError("inconsistent data: expected %d points" |
---|
941 | " but found %d points", nx*ny*nz, npts); |
---|
942 | return NULL; |
---|
943 | } |
---|
944 | break; |
---|
945 | } else if (sscanf(start, "object %d class array type %s rank 0 times %d data follows", &dummy, type, &npts) == 3) { |
---|
946 | if (npts != nx*ny*nz) { |
---|
947 | result.addError("inconsistent data: expected %d points" |
---|
948 | " but found %d points", nx*ny*nz, npts); |
---|
949 | return NULL; |
---|
950 | } |
---|
951 | break; |
---|
952 | } |
---|
953 | } |
---|
954 | } |
---|
955 | |
---|
956 | // read data points |
---|
957 | if (fin.eof()) { |
---|
958 | result.error("data not found in stream"); |
---|
959 | return NULL; |
---|
960 | } |
---|
961 | |
---|
962 | Volume* volPtr = 0; |
---|
963 | if (isrect) { |
---|
964 | Rappture::Mesh1D xgrid(x0, x0+nx*dx, nx); |
---|
965 | Rappture::Mesh1D ygrid(y0, y0+ny*dy, ny); |
---|
966 | Rappture::Mesh1D zgrid(z0, z0+nz*dz, nz); |
---|
967 | Rappture::FieldRect3D field(xgrid, ygrid, zgrid); |
---|
968 | |
---|
969 | double dval[6]; |
---|
970 | int nread = 0; |
---|
971 | int ix = 0; |
---|
972 | int iy = 0; |
---|
973 | int iz = 0; |
---|
974 | while (!fin.eof() && nread < npts) { |
---|
975 | fin.getline(line,sizeof(line)-1); |
---|
976 | if (fin.fail()) { |
---|
977 | result.error("error reading data points"); |
---|
978 | return NULL; |
---|
979 | } |
---|
980 | int n = sscanf(line, "%lg %lg %lg %lg %lg %lg", &dval[0], &dval[1], &dval[2], &dval[3], &dval[4], &dval[5]); |
---|
981 | |
---|
982 | for (int p=0; p < n; p++) { |
---|
983 | int nindex = iz*nx*ny + iy*nx + ix; |
---|
984 | field.define(nindex, dval[p]); |
---|
985 | TRACE("nindex = %i\tdval[%i] = %lg\n", nindex, p, dval[p]); |
---|
986 | nread++; |
---|
987 | if (++iz >= nz) { |
---|
988 | iz = 0; |
---|
989 | if (++iy >= ny) { |
---|
990 | iy = 0; |
---|
991 | ++ix; |
---|
992 | } |
---|
993 | } |
---|
994 | } |
---|
995 | } |
---|
996 | |
---|
997 | // make sure that we read all of the expected points |
---|
998 | if (nread != nx*ny*nz) { |
---|
999 | result.addError("inconsistent data: expected %d points" |
---|
1000 | " but found %d points", nx*ny*nz, npts); |
---|
1001 | return NULL; |
---|
1002 | } |
---|
1003 | |
---|
1004 | // figure out a good mesh spacing |
---|
1005 | int nsample = 30; |
---|
1006 | dx = field.rangeMax(Rappture::xaxis) - field.rangeMin(Rappture::xaxis); |
---|
1007 | dy = field.rangeMax(Rappture::yaxis) - field.rangeMin(Rappture::yaxis); |
---|
1008 | dz = field.rangeMax(Rappture::zaxis) - field.rangeMin(Rappture::zaxis); |
---|
1009 | double dmin = pow((dx*dy*dz)/(nsample*nsample*nsample), 0.333); |
---|
1010 | |
---|
1011 | nx = (int)ceil(dx/dmin); |
---|
1012 | ny = (int)ceil(dy/dmin); |
---|
1013 | nz = (int)ceil(dz/dmin); |
---|
1014 | |
---|
1015 | #ifndef NV40 |
---|
1016 | // must be an even power of 2 for older cards |
---|
1017 | nx = (int)pow(2.0, ceil(log10((double)nx)/log10(2.0))); |
---|
1018 | ny = (int)pow(2.0, ceil(log10((double)ny)/log10(2.0))); |
---|
1019 | nz = (int)pow(2.0, ceil(log10((double)nz)/log10(2.0))); |
---|
1020 | #endif |
---|
1021 | |
---|
1022 | float *data = new float[4*nx*ny*nz]; |
---|
1023 | |
---|
1024 | double vmin = field.valueMin(); |
---|
1025 | double dv = field.valueMax() - field.valueMin(); |
---|
1026 | if (dv == 0.0) { dv = 1.0; } |
---|
1027 | |
---|
1028 | int ngen = 0; |
---|
1029 | double nzero_min = 0.0; |
---|
1030 | for (iz=0; iz < nz; iz++) { |
---|
1031 | double zval = z0 + iz*dmin; |
---|
1032 | for (int iy=0; iy < ny; iy++) { |
---|
1033 | double yval = y0 + iy*dmin; |
---|
1034 | for (int ix=0; ix < nx; ix++) { |
---|
1035 | double xval = x0 + ix*dmin; |
---|
1036 | double v = field.value(xval,yval,zval); |
---|
1037 | |
---|
1038 | if (v != 0.0f && v < nzero_min) { |
---|
1039 | nzero_min = v; |
---|
1040 | } |
---|
1041 | // scale all values [0-1], -1 => out of bounds |
---|
1042 | v = (isnan(v)) ? -1.0 : (v - vmin)/dv; |
---|
1043 | data[ngen] = v; |
---|
1044 | |
---|
1045 | ngen += 4; |
---|
1046 | } |
---|
1047 | } |
---|
1048 | } |
---|
1049 | |
---|
1050 | // Compute the gradient of this data. BE CAREFUL: center |
---|
1051 | // calculation on each node to avoid skew in either direction. |
---|
1052 | ngen = 0; |
---|
1053 | for (int iz=0; iz < nz; iz++) { |
---|
1054 | for (int iy=0; iy < ny; iy++) { |
---|
1055 | for (int ix=0; ix < nx; ix++) { |
---|
1056 | // gradient in x-direction |
---|
1057 | double valm1 = (ix == 0) ? 0.0 : data[ngen-1]; |
---|
1058 | double valp1 = (ix == nx-1) ? 0.0 : data[ngen+1]; |
---|
1059 | if (valm1 < 0 || valp1 < 0) { |
---|
1060 | data[ngen+1] = 0.0; |
---|
1061 | } else { |
---|
1062 | data[ngen+1] = valp1-valm1; // assume dx=1 |
---|
1063 | //data[ngen+1] = ((valp1-valm1) + 1) * 0.5; // assume dx=1 (ISO) |
---|
1064 | } |
---|
1065 | |
---|
1066 | // gradient in y-direction |
---|
1067 | valm1 = (iy == 0) ? 0.0 : data[ngen-4*nx]; |
---|
1068 | valp1 = (iy == ny-1) ? 0.0 : data[ngen+4*nx]; |
---|
1069 | if (valm1 < 0 || valp1 < 0) { |
---|
1070 | data[ngen+2] = 0.0; |
---|
1071 | } else { |
---|
1072 | data[ngen+2] = valp1-valm1; // assume dy=1 |
---|
1073 | //data[ngen+2] = ((valp1-valm1) + 1) * 0.5; // assume dy=1 (ISO) |
---|
1074 | } |
---|
1075 | |
---|
1076 | // gradient in z-direction |
---|
1077 | valm1 = (iz == 0) ? 0.0 : data[ngen-4*nx*ny]; |
---|
1078 | valp1 = (iz == nz-1) ? 0.0 : data[ngen+4*nx*ny]; |
---|
1079 | if (valm1 < 0 || valp1 < 0) { |
---|
1080 | data[ngen+3] = 0.0; |
---|
1081 | } else { |
---|
1082 | data[ngen+3] = valp1-valm1; // assume dz=1 |
---|
1083 | //data[ngen+3] = ((valp1-valm1) + 1) * 0.5; // assume dz=1 (ISO) |
---|
1084 | } |
---|
1085 | |
---|
1086 | ngen += 4; |
---|
1087 | } |
---|
1088 | } |
---|
1089 | } |
---|
1090 | |
---|
1091 | /* |
---|
1092 | float *cdata = new float[nx*ny*nz]; |
---|
1093 | int ngen = 0; |
---|
1094 | double nzero_min = 0.0; |
---|
1095 | for (int iz=0; iz < nz; iz++) { |
---|
1096 | double zval = z0 + iz*dmin; |
---|
1097 | for (int iy=0; iy < ny; iy++) { |
---|
1098 | double yval = y0 + iy*dmin; |
---|
1099 | for (int ix=0; ix < nx; ix++) { |
---|
1100 | double xval = x0 + ix*dmin; |
---|
1101 | double v = field.value(xval,yval,zval); |
---|
1102 | |
---|
1103 | if (v != 0.0f && v < nzero_min) { |
---|
1104 | nzero_min = v; |
---|
1105 | } |
---|
1106 | |
---|
1107 | // scale all values [0-1], -1 => out of bounds |
---|
1108 | v = (isnan(v)) ? -1.0 : v; |
---|
1109 | |
---|
1110 | cdata[ngen] = v; |
---|
1111 | ++ngen; |
---|
1112 | } |
---|
1113 | } |
---|
1114 | } |
---|
1115 | |
---|
1116 | float* data = computeGradient(cdata, nx, ny, nz, field.valueMin(), |
---|
1117 | field.valueMax()); |
---|
1118 | |
---|
1119 | for (int i=0; i<nx*ny*nz; i++) { |
---|
1120 | TRACE("enddata[%i] = %lg\n",i,data[i]); |
---|
1121 | } |
---|
1122 | |
---|
1123 | TRACE("End Data Stats volDataID = %i\n",volDataID); |
---|
1124 | TRACE("nx = %i ny = %i nz = %i\n",nx,ny,nz); |
---|
1125 | TRACE("dx = %lg dy = %lg dz = %lg\n",dx,dy,dz); |
---|
1126 | TRACE("dataMin = %lg\tdataMax = %lg\tnzero_min = %lg\n", |
---|
1127 | field.valueMin(),field.valueMax(),nzero_min); |
---|
1128 | */ |
---|
1129 | |
---|
1130 | volPtr = NanoVis::load_volume(tag, nx, ny, nz, 4, data, |
---|
1131 | field.valueMin(), field.valueMax(), nzero_min); |
---|
1132 | volPtr->xAxis.SetRange(field.rangeMin(Rappture::xaxis), |
---|
1133 | field.rangeMax(Rappture::xaxis)); |
---|
1134 | volPtr->yAxis.SetRange(field.rangeMin(Rappture::yaxis), |
---|
1135 | field.rangeMax(Rappture::yaxis)); |
---|
1136 | volPtr->zAxis.SetRange(field.rangeMin(Rappture::zaxis), |
---|
1137 | field.rangeMax(Rappture::zaxis)); |
---|
1138 | volPtr->wAxis.SetRange(field.valueMin(), field.valueMax()); |
---|
1139 | volPtr->update_pending = true; |
---|
1140 | // TBD.. |
---|
1141 | // POINTSET |
---|
1142 | /* |
---|
1143 | PointSet* pset = new PointSet(); |
---|
1144 | pset->initialize(volume[index], (float*) data); |
---|
1145 | pset->setVisible(true); |
---|
1146 | NanoVis::pointSet.push_back(pset); |
---|
1147 | updateColor(pset); |
---|
1148 | NanoVis::volume[index]->pointsetIndex = NanoVis::pointSet.size() - 1; |
---|
1149 | */ |
---|
1150 | |
---|
1151 | delete [] data; |
---|
1152 | |
---|
1153 | } else { |
---|
1154 | Rappture::Mesh1D zgrid(z0, z0+nz*dz, nz); |
---|
1155 | Rappture::FieldPrism3D field(xymesh, zgrid); |
---|
1156 | |
---|
1157 | double dval; |
---|
1158 | int nread = 0; |
---|
1159 | int ixy = 0; |
---|
1160 | int iz = 0; |
---|
1161 | while (!fin.eof() && nread < npts) { |
---|
1162 | fin >> dval; |
---|
1163 | if (fin.fail()) { |
---|
1164 | char mesg[256]; |
---|
1165 | sprintf(mesg,"after %d of %d points: can't read number", |
---|
1166 | nread, npts); |
---|
1167 | result.error(mesg); |
---|
1168 | return NULL; |
---|
1169 | } else { |
---|
1170 | int nid = nxy*iz + ixy; |
---|
1171 | field.define(nid, dval); |
---|
1172 | |
---|
1173 | nread++; |
---|
1174 | if (++iz >= nz) { |
---|
1175 | iz = 0; |
---|
1176 | ixy++; |
---|
1177 | } |
---|
1178 | } |
---|
1179 | } |
---|
1180 | |
---|
1181 | // make sure that we read all of the expected points |
---|
1182 | if (nread != nxy*nz) { |
---|
1183 | result.addError("inconsistent data: expected %d points" |
---|
1184 | " but found %d points", nx*ny*nz, npts); |
---|
1185 | return NULL; |
---|
1186 | } |
---|
1187 | |
---|
1188 | // figure out a good mesh spacing |
---|
1189 | int nsample = 30; |
---|
1190 | x0 = field.rangeMin(Rappture::xaxis); |
---|
1191 | dx = field.rangeMax(Rappture::xaxis) - field.rangeMin(Rappture::xaxis); |
---|
1192 | y0 = field.rangeMin(Rappture::yaxis); |
---|
1193 | dy = field.rangeMax(Rappture::yaxis) - field.rangeMin(Rappture::yaxis); |
---|
1194 | z0 = field.rangeMin(Rappture::zaxis); |
---|
1195 | dz = field.rangeMax(Rappture::zaxis) - field.rangeMin(Rappture::zaxis); |
---|
1196 | double dmin = pow((dx*dy*dz)/(nsample*nsample*nsample), 0.333); |
---|
1197 | |
---|
1198 | nx = (int)ceil(dx/dmin); |
---|
1199 | ny = (int)ceil(dy/dmin); |
---|
1200 | nz = (int)ceil(dz/dmin); |
---|
1201 | #ifndef NV40 |
---|
1202 | // must be an even power of 2 for older cards |
---|
1203 | nx = (int)pow(2.0, ceil(log10((double)nx)/log10(2.0))); |
---|
1204 | ny = (int)pow(2.0, ceil(log10((double)ny)/log10(2.0))); |
---|
1205 | nz = (int)pow(2.0, ceil(log10((double)nz)/log10(2.0))); |
---|
1206 | #endif |
---|
1207 | float *data = new float[4*nx*ny*nz]; |
---|
1208 | |
---|
1209 | double vmin = field.valueMin(); |
---|
1210 | double dv = field.valueMax() - field.valueMin(); |
---|
1211 | if (dv == 0.0) { dv = 1.0; } |
---|
1212 | |
---|
1213 | // generate the uniformly sampled data that we need for a volume |
---|
1214 | int ngen = 0; |
---|
1215 | double nzero_min = 0.0; |
---|
1216 | for (iz=0; iz < nz; iz++) { |
---|
1217 | double zval = z0 + iz*dmin; |
---|
1218 | for (int iy=0; iy < ny; iy++) { |
---|
1219 | double yval = y0 + iy*dmin; |
---|
1220 | for (int ix=0; ix < nx; ix++) { |
---|
1221 | double xval = x0 + ix*dmin; |
---|
1222 | double v = field.value(xval,yval,zval); |
---|
1223 | |
---|
1224 | if (v != 0.0f && v < nzero_min) { |
---|
1225 | nzero_min = v; |
---|
1226 | } |
---|
1227 | // scale all values [0-1], -1 => out of bounds |
---|
1228 | v = (isnan(v)) ? -1.0 : (v - vmin)/dv; |
---|
1229 | data[ngen] = v; |
---|
1230 | |
---|
1231 | ngen += 4; |
---|
1232 | } |
---|
1233 | } |
---|
1234 | } |
---|
1235 | |
---|
1236 | // Compute the gradient of this data. BE CAREFUL: center |
---|
1237 | // calculation on each node to avoid skew in either direction. |
---|
1238 | ngen = 0; |
---|
1239 | for (int iz=0; iz < nz; iz++) { |
---|
1240 | for (int iy=0; iy < ny; iy++) { |
---|
1241 | for (int ix=0; ix < nx; ix++) { |
---|
1242 | // gradient in x-direction |
---|
1243 | double valm1 = (ix == 0) ? 0.0 : data[ngen-1]; |
---|
1244 | double valp1 = (ix == nx-1) ? 0.0 : data[ngen+1]; |
---|
1245 | if (valm1 < 0 || valp1 < 0) { |
---|
1246 | data[ngen+1] = 0.0; |
---|
1247 | } else { |
---|
1248 | data[ngen+1] = valp1-valm1; // assume dx=1 |
---|
1249 | //data[ngen+1] = ((valp1-valm1) + 1) * 0.5; // assume dx=1 (ISO) |
---|
1250 | } |
---|
1251 | |
---|
1252 | // gradient in y-direction |
---|
1253 | valm1 = (iy == 0) ? 0.0 : data[ngen-4*nx]; |
---|
1254 | valp1 = (iy == ny-1) ? 0.0 : data[ngen+4*nx]; |
---|
1255 | if (valm1 < 0 || valp1 < 0) { |
---|
1256 | data[ngen+2] = 0.0; |
---|
1257 | } else { |
---|
1258 | data[ngen+2] = valp1-valm1; // assume dy=1 |
---|
1259 | //data[ngen+2] = ((valp1-valm1) + 1) * 0.5; // assume dy=1 (ISO) |
---|
1260 | } |
---|
1261 | |
---|
1262 | // gradient in z-direction |
---|
1263 | valm1 = (iz == 0) ? 0.0 : data[ngen-4*nx*ny]; |
---|
1264 | valp1 = (iz == nz-1) ? 0.0 : data[ngen+4*nx*ny]; |
---|
1265 | if (valm1 < 0 || valp1 < 0) { |
---|
1266 | data[ngen+3] = 0.0; |
---|
1267 | } else { |
---|
1268 | data[ngen+3] = valp1-valm1; // assume dz=1 |
---|
1269 | //data[ngen+3] = ((valp1-valm1) + 1) * 0.5; // assume dz=1 (ISO) |
---|
1270 | } |
---|
1271 | |
---|
1272 | ngen += 4; |
---|
1273 | } |
---|
1274 | } |
---|
1275 | } |
---|
1276 | |
---|
1277 | volPtr = NanoVis::load_volume(tag, nx, ny, nz, 4, data, |
---|
1278 | field.valueMin(), field.valueMax(), nzero_min); |
---|
1279 | volPtr->xAxis.SetRange(field.rangeMin(Rappture::xaxis), |
---|
1280 | field.rangeMax(Rappture::xaxis)); |
---|
1281 | volPtr->yAxis.SetRange(field.rangeMin(Rappture::yaxis), |
---|
1282 | field.rangeMax(Rappture::yaxis)); |
---|
1283 | volPtr->zAxis.SetRange(field.rangeMin(Rappture::zaxis), |
---|
1284 | field.rangeMax(Rappture::zaxis)); |
---|
1285 | volPtr->wAxis.SetRange(field.valueMin(), field.valueMax()); |
---|
1286 | volPtr->update_pending = true; |
---|
1287 | // TBD.. |
---|
1288 | // POINTSET |
---|
1289 | /* |
---|
1290 | PointSet* pset = new PointSet(); |
---|
1291 | pset->initialize(volume[index], (float*) data); |
---|
1292 | pset->setVisible(true); |
---|
1293 | NanoVis::pointSet.push_back(pset); |
---|
1294 | updateColor(pset); |
---|
1295 | NanoVis::volume[index]->pointsetIndex = NanoVis::pointSet.size() - 1; |
---|
1296 | */ |
---|
1297 | |
---|
1298 | |
---|
1299 | delete [] data; |
---|
1300 | } |
---|
1301 | |
---|
1302 | // |
---|
1303 | // Center this new volume on the origin. |
---|
1304 | // |
---|
1305 | float dx0 = -0.5; |
---|
1306 | float dy0 = -0.5*dy/dx; |
---|
1307 | float dz0 = -0.5*dz/dx; |
---|
1308 | if (volPtr) { |
---|
1309 | volPtr->location(Vector3(dx0, dy0, dz0)); |
---|
1310 | } |
---|
1311 | return volPtr; |
---|
1312 | } |
---|