1 | |
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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 | |
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40 | //transfer function headers |
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41 | #include "ZincBlendeVolume.h" |
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42 | #include "NvZincBlendeReconstructor.h" |
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43 | |
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44 | #define _LOCAL_ZINC_TEST_ 0 |
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45 | |
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46 | /* |
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47 | * Load a 3D vector field from a dx-format file |
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48 | */ |
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49 | bool |
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50 | load_vector_stream2(Rappture::Outcome &result, int volindex, std::istream& fin) |
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51 | { |
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52 | int dummy, nx, ny, nz, npts; |
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53 | double x0, y0, z0, dx, dy, dz, ddx, ddy, ddz; |
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54 | char line[128], type[128], *start; |
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55 | |
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56 | dx = dy = dz = 0.0; // Suppress compiler warning. |
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57 | x0 = y0 = z0 = 0.0; // May not have an origin line. |
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58 | while (!fin.eof()) { |
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59 | fin.getline(line, sizeof(line) - 1); |
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60 | if (fin.fail()) { |
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61 | result.addError("error in data stream"); |
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62 | return false; |
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63 | } |
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64 | for (start=&line[0]; *start == ' ' || *start == '\t'; start++) |
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65 | ; // skip leading blanks |
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66 | |
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67 | if (*start != '#') { // skip comment lines |
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68 | if (sscanf(start, "object %d class gridpositions counts %d %d %d", &dummy, &nx, &ny, &nz) == 4) { |
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69 | printf("w:%d h:%d d:%d\n", nx, ny, nz); |
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70 | // found grid size |
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71 | } else if (sscanf(start, "origin %lg %lg %lg", &x0, &y0, &z0) == 3) { |
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72 | // found origin |
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73 | } else if (sscanf(start, "delta %lg %lg %lg", &ddx, &ddy, &ddz) == 3) { |
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74 | // found one of the delta lines |
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75 | if (ddx != 0.0) { |
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76 | dx = ddx; |
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77 | } else if (ddy != 0.0) { |
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78 | dy = ddy; |
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79 | } else if (ddz != 0.0) { |
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80 | dz = ddz; |
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81 | } |
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82 | } else if (sscanf(start, "object %d class array type %s shape 3 rank 1 items %d data follows", &dummy, type, &npts) == 3) { |
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83 | printf("point %d\n", npts); |
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84 | if (npts != nx*ny*nz) { |
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85 | result.addError("inconsistent data: expected %d points" |
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86 | " but found %d points", nx*ny*nz, npts); |
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87 | return false; |
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88 | } |
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89 | break; |
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90 | } else if (sscanf(start, "object %d class array type %s rank 0 times %d data follows", &dummy, type, &npts) == 3) { |
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91 | if (npts != nx*ny*nz) { |
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92 | result.addError("inconsistent data: expected %d points" |
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93 | " but found %d points", nx*ny*nz, npts); |
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94 | return false; |
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95 | } |
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96 | break; |
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97 | } |
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98 | } |
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99 | } |
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100 | |
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101 | // read data points |
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102 | float* srcdata = new float[nx * ny * nz * 3]; |
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103 | if (!fin.eof()) { |
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104 | double vx, vy, vz, vm; |
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105 | #ifdef notdef |
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106 | double max_x = -1e21, min_x = 1e21; |
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107 | double max_y = -1e21, min_y = 1e21; |
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108 | double max_z = -1e21, min_z = 1e21; |
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109 | #endif |
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110 | double max_mag = -1e21, min_mag = 1e21; |
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111 | int nread = 0; |
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112 | for (int ix=0; ix < nx; ix++) { |
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113 | for (int iy=0; iy < ny; iy++) { |
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114 | for (int iz=0; iz < nz; iz++) { |
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115 | if (fin.eof() || nread > npts) { |
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116 | break; |
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117 | } |
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118 | fin.getline(line,sizeof(line)-1); |
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119 | if (sscanf(line, "%lg %lg %lg", &vx, &vy, &vz) == 3) { |
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120 | int nindex = (iz*nx*ny + iy*nx + ix) * 3; |
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121 | srcdata[nindex] = vx; |
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122 | //if (srcdata[nindex] > max_x) max_x = srcdata[nindex]; |
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123 | //if (srcdata[nindex] < min_x) min_x = srcdata[nindex]; |
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124 | ++nindex; |
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125 | |
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126 | srcdata[nindex] = vy; |
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127 | //if (srcdata[nindex] > max_y) max_y = srcdata[nindex]; |
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128 | //if (srcdata[nindex] < min_y) min_y = srcdata[nindex]; |
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129 | ++nindex; |
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130 | |
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131 | srcdata[nindex] = vz; |
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132 | //if (srcdata[nindex] > max_z) max_z = srcdata[nindex]; |
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133 | //if (srcdata[nindex] < min_z) min_z = srcdata[nindex]; |
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134 | |
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135 | vm = sqrt(vx*vx + vy*vy + vz*vz); |
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136 | if (vm > max_mag) { |
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137 | max_mag = vm; |
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138 | } |
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139 | if (vm < min_mag) { |
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140 | min_mag = vm; |
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141 | } |
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142 | |
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143 | ++nread; |
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144 | } |
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145 | } |
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146 | } |
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147 | } |
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148 | |
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149 | // make sure that we read all of the expected points |
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150 | if (nread != nx*ny*nz) { |
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151 | result.addError("inconsistent data: expected %d points" |
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152 | " but found %d points", nx*ny*nz, npts); |
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153 | return false; |
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154 | } |
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155 | |
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156 | float *data = new float[4*nx*ny*nz]; |
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157 | memset(data, 0, sizeof(float) * 4 * nx * ny * nz); |
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158 | |
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159 | std::cout << "generating " << nx << "x" << ny << "x" << nz << " = " << nx*ny*nz << " points" << std::endl; |
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160 | |
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161 | // generate the uniformly sampled data that we need for a volume |
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162 | #ifdef notdef |
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163 | double nzero_min = 0.0; |
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164 | #endif |
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165 | int ngen = 0; |
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166 | int nindex = 0; |
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167 | for (int iz=0; iz < nz; iz++) { |
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168 | for (int iy=0; iy < ny; iy++) { |
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169 | for (int ix=0; ix < nx; ix++) { |
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170 | |
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171 | vx = srcdata[nindex++]; |
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172 | vy = srcdata[nindex++]; |
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173 | vz = srcdata[nindex++]; |
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174 | |
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175 | double vm; |
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176 | vm = sqrt(vx*vx + vy*vy + vz*vz); |
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177 | |
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178 | data[ngen] = vm / max_mag; ++ngen; |
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179 | data[ngen] = vx /(2.0*max_mag) + 0.5; ++ngen; |
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180 | data[ngen] = vy /(2.0*max_mag) + 0.5; ++ngen; |
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181 | data[ngen] = vz /(2.0*max_mag) + 0.5; ++ngen; |
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182 | } |
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183 | } |
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184 | } |
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185 | |
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186 | Volume *volPtr; |
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187 | volPtr = NanoVis::load_volume(volindex, nx, ny, nz, 4, data, |
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188 | min_mag, max_mag, 0); |
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189 | |
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190 | volPtr->xAxis.SetRange(x0, x0 + nx); |
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191 | volPtr->yAxis.SetRange(y0, y0 + ny); |
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192 | volPtr->zAxis.SetRange(z0, z0 + nz); |
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193 | volPtr->wAxis.SetRange(min_mag, max_mag); |
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194 | volPtr->update_pending = true; |
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195 | delete [] data; |
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196 | } else { |
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197 | std::cerr << "WARNING: data not found in stream" << std::endl; |
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198 | } |
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199 | return true; |
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200 | } |
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201 | |
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202 | bool |
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203 | load_vector_stream(Rappture::Outcome result, int index, std::istream& fin) |
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204 | { |
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205 | int dummy, nx, ny, nz, npts; |
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206 | double x0, y0, z0, dx, dy, dz, ddx, ddy, ddz; |
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207 | char line[128], type[128], *start; |
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208 | |
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209 | dx = dy = dz = 0.0; // Suppress compiler warning. |
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210 | x0 = y0 = z0 = 0.0; // May not have an origin line. |
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211 | while (!fin.eof()) { |
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212 | fin.getline(line, sizeof(line) - 1); |
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213 | if (fin.fail()) { |
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214 | result.addError("error in data stream"); |
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215 | return false; |
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216 | } |
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217 | for (start=&line[0]; *start == ' ' || *start == '\t'; start++) |
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218 | ; // skip leading blanks |
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219 | |
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220 | if (*start != '#') { // skip comment lines |
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221 | if (sscanf(start, "object %d class gridpositions counts %d %d %d", &dummy, &nx, &ny, &nz) == 4) { |
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222 | printf("w:%d h:%d d:%d\n", nx, ny, nz); |
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223 | // found grid size |
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224 | } else if (sscanf(start, "origin %lg %lg %lg", &x0, &y0, &z0) == 3) { |
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225 | // found origin |
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226 | } else if (sscanf(start, "delta %lg %lg %lg", &ddx, &ddy, &ddz) == 3) { |
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227 | // found one of the delta lines |
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228 | if (ddx != 0.0) { |
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229 | dx = ddx; |
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230 | } else if (ddy != 0.0) { |
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231 | dy = ddy; |
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232 | } else if (ddz != 0.0) { |
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233 | dz = ddz; |
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234 | } |
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235 | } else if (sscanf(start, "object %d class array type %s shape 3 rank 1 items %d data follows", &dummy, type, &npts) == 3) { |
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236 | printf("point %d\n", npts); |
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237 | if (npts != nx*ny*nz) { |
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238 | result.addError("inconsistent data: expected %d points" |
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239 | " but found %d points", nx*ny*nz, npts); |
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240 | return false; |
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241 | } |
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242 | break; |
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243 | } else if (sscanf(start, "object %d class array type %s rank 0 times %d data follows", &dummy, type, &npts) == 3) { |
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244 | if (npts != nx*ny*nz) { |
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245 | result.addError("inconsistent data: expected %d points" |
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246 | " but found %d points", nx*ny*nz, npts); |
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247 | return false; |
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248 | } |
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249 | break; |
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250 | } |
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251 | } |
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252 | } |
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253 | |
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254 | // read data points |
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255 | if (!fin.eof()) { |
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256 | Rappture::Mesh1D xgrid(x0, x0+nx*dx, nx); |
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257 | Rappture::Mesh1D ygrid(y0, y0+ny*dy, ny); |
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258 | Rappture::Mesh1D zgrid(z0, z0+nz*dz, nz); |
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259 | Rappture::FieldRect3D xfield(xgrid, ygrid, zgrid); |
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260 | Rappture::FieldRect3D yfield(xgrid, ygrid, zgrid); |
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261 | Rappture::FieldRect3D zfield(xgrid, ygrid, zgrid); |
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262 | |
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263 | double vx, vy, vz; |
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264 | int nread = 0; |
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265 | for (int ix=0; ix < nx; ix++) { |
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266 | for (int iy=0; iy < ny; iy++) { |
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267 | for (int iz=0; iz < nz; iz++) { |
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268 | if (fin.eof() || nread > npts) { |
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269 | break; |
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270 | } |
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271 | fin.getline(line,sizeof(line)-1); |
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272 | if (sscanf(line, "%lg %lg %lg", &vx, &vy, &vz) == 3) { |
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273 | int nindex = iz*nx*ny + iy*nx + ix; |
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274 | xfield.define(nindex, vx); |
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275 | yfield.define(nindex, vy); |
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276 | zfield.define(nindex, vz); |
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277 | nread++; |
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278 | } |
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279 | } |
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280 | } |
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281 | } |
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282 | |
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283 | // make sure that we read all of the expected points |
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284 | if (nread != nx*ny*nz) { |
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285 | result.addError("inconsistent data: expected %d points" |
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286 | " but found %d points", nx*ny*nz, npts); |
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287 | return false; |
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288 | } |
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289 | |
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290 | // figure out a good mesh spacing |
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291 | int nsample = 30; |
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292 | dx = xfield.rangeMax(Rappture::xaxis) - xfield.rangeMin(Rappture::xaxis); |
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293 | dy = xfield.rangeMax(Rappture::yaxis) - xfield.rangeMin(Rappture::yaxis); |
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294 | dz = xfield.rangeMax(Rappture::zaxis) - xfield.rangeMin(Rappture::zaxis); |
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295 | double dmin = pow((dx*dy*dz)/(nsample*nsample*nsample), 0.333); |
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296 | |
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297 | printf("dx:%lf dy:%lf dz:%lf dmin:%lf\n", dx, dy, dz, dmin); |
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298 | |
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299 | nx = (int)ceil(dx/dmin); |
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300 | ny = (int)ceil(dy/dmin); |
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301 | nz = (int)ceil(dz/dmin); |
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302 | |
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303 | #ifndef NV40 |
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304 | // must be an even power of 2 for older cards |
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305 | nx = (int)pow(2.0, ceil(log10((double)nx)/log10(2.0))); |
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306 | ny = (int)pow(2.0, ceil(log10((double)ny)/log10(2.0))); |
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307 | nz = (int)pow(2.0, ceil(log10((double)nz)/log10(2.0))); |
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308 | #endif |
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309 | |
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310 | float *data = new float[4*nx*ny*nz]; |
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311 | memset(data, 0, sizeof(float) * 4 * nx * ny * nz); |
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312 | |
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313 | std::cout << "generating " << nx << "x" << ny << "x" << nz << " = " << nx*ny*nz << " points" << std::endl; |
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314 | |
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315 | // generate the uniformly sampled data that we need for a volume |
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316 | double vmin = 1e21; |
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317 | double vmax = -1e21; |
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318 | double nzero_min = 0.0; |
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319 | int ngen = 0; |
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320 | for (int iz=0; iz < nz; iz++) { |
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321 | double zval = z0 + iz*dmin; |
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322 | for (int iy=0; iy < ny; iy++) { |
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323 | double yval = y0 + iy*dmin; |
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324 | for (int ix=0; ix < nx; ix++) { |
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325 | double xval = x0 + ix*dmin; |
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326 | |
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327 | vx = xfield.value(xval,yval,zval); |
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328 | vy = yfield.value(xval,yval,zval); |
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329 | vz = zfield.value(xval,yval,zval); |
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330 | |
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331 | double vm; |
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332 | vm = sqrt(vx*vx + vy*vy + vz*vz); |
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333 | if (vm < vmin) { |
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334 | vmin = vm; |
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335 | } else if (vm > vmax) { |
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336 | vmax = vm; |
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337 | } |
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338 | if ((vm != 0.0f) && (vm < nzero_min)) { |
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339 | nzero_min = vm; |
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340 | } |
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341 | data[ngen++] = vm; |
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342 | data[ngen++] = vx; |
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343 | data[ngen++] = vy; |
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344 | data[ngen++] = vz; |
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345 | } |
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346 | } |
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347 | } |
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348 | |
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349 | ngen = 0; |
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350 | |
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351 | // scale should be accounted. |
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352 | for (ngen=0; ngen < npts; ) { |
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353 | data[ngen] = data[ngen] / vmax; ++ngen; |
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354 | data[ngen] = (data[ngen]/(2.0*vmax) + 0.5); ++ngen; |
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355 | data[ngen] = (data[ngen]/(2.0*vmax) + 0.5); ++ngen; |
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356 | data[ngen] = (data[ngen]/(2.0*vmax) + 0.5); ++ngen; |
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357 | } |
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358 | Volume *volPtr; |
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359 | volPtr = NanoVis::load_volume(index, nx, ny, nz, 4, data, vmin, vmax, |
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360 | nzero_min); |
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361 | |
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362 | volPtr->xAxis.SetRange(x0, x0 + (nx * dx)); |
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363 | volPtr->yAxis.SetRange(y0, y0 + (ny * dy)); |
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364 | volPtr->zAxis.SetRange(z0, z0 + (nz * dz)); |
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365 | volPtr->wAxis.SetRange(vmin, vmax); |
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366 | volPtr->update_pending = true; |
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367 | delete [] data; |
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368 | } else { |
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369 | result.addError("WARNING: data not found in stream"); |
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370 | return false; |
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371 | } |
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372 | return true; |
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373 | } |
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374 | |
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375 | /* Load a 3D volume from a dx-format file |
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376 | */ |
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377 | bool |
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378 | load_volume_stream2(Rappture::Outcome &result, int index, std::iostream& fin) |
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379 | { |
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380 | printf("load_volume_stream2\n"); |
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381 | Rappture::MeshTri2D xymesh; |
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382 | int dummy, nx, ny, nz, nxy, npts; |
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383 | double x0, y0, z0, dx, dy, dz, ddx, ddy, ddz; |
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384 | char line[128], type[128], *start; |
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385 | |
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386 | int isrect = 1; |
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387 | dx = dy = dz = 0.0; // Suppress compiler warning. |
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388 | x0 = y0 = z0 = 0.0; // May not have an origin line. |
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389 | do { |
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390 | fin.getline(line,sizeof(line)-1); |
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391 | for (start=&line[0]; *start == ' ' || *start == '\t'; start++) |
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392 | ; // skip leading blanks |
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393 | |
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394 | if (*start != '#') { // skip comment lines |
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395 | if (sscanf(start, "object %d class gridpositions counts %d %d %d", |
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396 | &dummy, &nx, &ny, &nz) == 4) { |
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397 | // found grid size |
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398 | isrect = 1; |
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399 | } 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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400 | isrect = 0; |
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401 | double xx, yy, zz; |
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402 | for (int i=0; i < nxy; i++) { |
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403 | fin.getline(line,sizeof(line)-1); |
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404 | if (sscanf(line, "%lg %lg %lg", &xx, &yy, &zz) == 3) { |
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405 | xymesh.addNode( Rappture::Node2D(xx,yy) ); |
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406 | } |
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407 | } |
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408 | |
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409 | char fpts[128]; |
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410 | sprintf(fpts, "/tmp/tmppts%d", getpid()); |
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411 | char fcells[128]; |
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412 | sprintf(fcells, "/tmp/tmpcells%d", getpid()); |
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413 | |
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414 | std::ofstream ftmp(fpts); |
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415 | // save corners of bounding box first, to work around meshing |
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416 | // problems in voronoi utility |
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417 | ftmp << xymesh.rangeMin(Rappture::xaxis) << " " |
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418 | << xymesh.rangeMin(Rappture::yaxis) << std::endl; |
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419 | ftmp << xymesh.rangeMax(Rappture::xaxis) << " " |
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420 | << xymesh.rangeMin(Rappture::yaxis) << std::endl; |
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421 | ftmp << xymesh.rangeMax(Rappture::xaxis) << " " |
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422 | << xymesh.rangeMax(Rappture::yaxis) << std::endl; |
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423 | ftmp << xymesh.rangeMin(Rappture::xaxis) << " " |
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424 | << xymesh.rangeMax(Rappture::yaxis) << std::endl; |
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425 | for (int i=0; i < nxy; i++) { |
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426 | ftmp << xymesh.atNode(i).x() << " " << xymesh.atNode(i).y() << std::endl; |
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427 | } |
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428 | ftmp.close(); |
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429 | |
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430 | char cmdstr[512]; |
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431 | sprintf(cmdstr, "voronoi -t < %s > %s", fpts, fcells); |
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432 | if (system(cmdstr) == 0) { |
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433 | int cx, cy, cz; |
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434 | std::ifstream ftri(fcells); |
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435 | while (!ftri.eof()) { |
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436 | ftri.getline(line,sizeof(line)-1); |
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437 | if (sscanf(line, "%d %d %d", &cx, &cy, &cz) == 3) { |
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438 | if (cx >= 4 && cy >= 4 && cz >= 4) { |
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439 | // skip first 4 boundary points |
---|
440 | xymesh.addCell(cx-4, cy-4, cz-4); |
---|
441 | } |
---|
442 | } |
---|
443 | } |
---|
444 | ftri.close(); |
---|
445 | } else { |
---|
446 | result.error("triangularization failed"); |
---|
447 | return false; |
---|
448 | } |
---|
449 | unlink(fpts), unlink(fcells); |
---|
450 | } else if (sscanf(start, "object %d class regulararray count %d", &dummy, &nz) == 2) { |
---|
451 | // found z-grid |
---|
452 | } else if (sscanf(start, "origin %lg %lg %lg", &x0, &y0, &z0) == 3) { |
---|
453 | // found origin |
---|
454 | } else if (sscanf(start, "delta %lg %lg %lg", &ddx, &ddy, &ddz) == 3) { |
---|
455 | int count = 0; |
---|
456 | // found one of the delta lines |
---|
457 | if (ddx != 0.0) { |
---|
458 | dx = ddx; |
---|
459 | count++; |
---|
460 | } |
---|
461 | if (ddy != 0.0) { |
---|
462 | dy = ddy; |
---|
463 | count++; |
---|
464 | } |
---|
465 | if (ddz != 0.0) { |
---|
466 | dz = ddz; |
---|
467 | count++; |
---|
468 | } |
---|
469 | if (count > 1) { |
---|
470 | result.addError("don't know how to handle multiple non-zero" |
---|
471 | " delta values"); |
---|
472 | return false; |
---|
473 | } |
---|
474 | } else if (sscanf(start, "object %d class array type %s rank 0 items %d data follows", &dummy, type, &npts) == 3) { |
---|
475 | if (isrect && (npts != nx*ny*nz)) { |
---|
476 | result.addError("inconsistent data: expected %d points " |
---|
477 | " but found %d points", nx*ny*nz, npts); |
---|
478 | return false; |
---|
479 | } else if (!isrect && (npts != nxy*nz)) { |
---|
480 | result.addError("inconsistent data: expected %d points " |
---|
481 | " but found %d points", nxy*nz, npts); |
---|
482 | return false; |
---|
483 | } |
---|
484 | break; |
---|
485 | } else if (sscanf(start, "object %d class array type %s rank 0 times %d data follows", &dummy, type, &npts) == 3) { |
---|
486 | if (npts != nx*ny*nz) { |
---|
487 | result.addError("inconsistent data: expected %d points " |
---|
488 | " but found %d points", nx*ny*nz, npts); |
---|
489 | return false; |
---|
490 | } |
---|
491 | break; |
---|
492 | } |
---|
493 | } |
---|
494 | } while (!fin.eof()); |
---|
495 | |
---|
496 | // read data points |
---|
497 | if (!fin.eof()) { |
---|
498 | if (isrect) { |
---|
499 | double dval[6]; |
---|
500 | int nread = 0; |
---|
501 | int ix = 0; |
---|
502 | int iy = 0; |
---|
503 | int iz = 0; |
---|
504 | float* data = new float[nx * ny * nz * 4]; |
---|
505 | memset(data, 0, nx*ny*nz*4); |
---|
506 | double vmin = 1e21; |
---|
507 | double nzero_min = 1e21; |
---|
508 | double vmax = -1e21; |
---|
509 | |
---|
510 | |
---|
511 | while (!fin.eof() && nread < npts) { |
---|
512 | fin.getline(line,sizeof(line)-1); |
---|
513 | int n = sscanf(line, "%lg %lg %lg %lg %lg %lg", &dval[0], &dval[1], &dval[2], &dval[3], &dval[4], &dval[5]); |
---|
514 | |
---|
515 | for (int p=0; p < n; p++) { |
---|
516 | int nindex = (iz*nx*ny + iy*nx + ix) * 4; |
---|
517 | data[nindex] = dval[p]; |
---|
518 | |
---|
519 | if (dval[p] < vmin) { |
---|
520 | vmin = dval[p]; |
---|
521 | } else if (dval[p] > vmax) { |
---|
522 | vmax = dval[p]; |
---|
523 | } |
---|
524 | if (dval[p] != 0.0f && dval[p] < nzero_min) { |
---|
525 | nzero_min = dval[p]; |
---|
526 | } |
---|
527 | |
---|
528 | nread++; |
---|
529 | if (++iz >= nz) { |
---|
530 | iz = 0; |
---|
531 | if (++iy >= ny) { |
---|
532 | iy = 0; |
---|
533 | ++ix; |
---|
534 | } |
---|
535 | } |
---|
536 | } |
---|
537 | } |
---|
538 | |
---|
539 | // make sure that we read all of the expected points |
---|
540 | if (nread != nx*ny*nz) { |
---|
541 | result.addError("inconsistent data: expected %d points " |
---|
542 | " but found %d points", nx*ny*nz, nread); |
---|
543 | return false; |
---|
544 | } |
---|
545 | |
---|
546 | double dv = vmax - vmin; |
---|
547 | int count = nx*ny*nz; |
---|
548 | int ngen = 0; |
---|
549 | double v; |
---|
550 | if (dv == 0.0) { |
---|
551 | dv = 1.0; |
---|
552 | } |
---|
553 | |
---|
554 | for (int i = 0; i < count; ++i) { |
---|
555 | v = data[ngen]; |
---|
556 | // scale all values [0-1], -1 => out of bounds |
---|
557 | // |
---|
558 | // INSOO |
---|
559 | v = (isnan(v)) ? -1.0 : (v - vmin)/dv; |
---|
560 | data[ngen] = v; |
---|
561 | ngen += 4; |
---|
562 | } |
---|
563 | |
---|
564 | computeSimpleGradient(data, nx, ny, nz); |
---|
565 | |
---|
566 | dx = nx; |
---|
567 | dy = ny; |
---|
568 | dz = nz; |
---|
569 | |
---|
570 | Volume *volPtr; |
---|
571 | volPtr = NanoVis::load_volume(index, nx, ny, nz, 4, data, |
---|
572 | vmin, vmax, nzero_min); |
---|
573 | volPtr->xAxis.SetRange(x0, x0 + (nx * dx)); |
---|
574 | volPtr->yAxis.SetRange(y0, y0 + (ny * dy)); |
---|
575 | volPtr->zAxis.SetRange(z0, z0 + (nz * dz)); |
---|
576 | volPtr->wAxis.SetRange(vmin, vmax); |
---|
577 | volPtr->update_pending = true; |
---|
578 | delete [] data; |
---|
579 | |
---|
580 | } else { |
---|
581 | Rappture::Mesh1D zgrid(z0, z0+nz*dz, nz); |
---|
582 | Rappture::FieldPrism3D field(xymesh, zgrid); |
---|
583 | |
---|
584 | double dval; |
---|
585 | int nread = 0; |
---|
586 | int ixy = 0; |
---|
587 | int iz = 0; |
---|
588 | while (!fin.eof() && nread < npts) { |
---|
589 | fin >> dval; |
---|
590 | if (fin.fail()) { |
---|
591 | result.addError("after %d of %d points: can't read number", |
---|
592 | nread, npts); |
---|
593 | return false; |
---|
594 | } else { |
---|
595 | int nid = nxy*iz + ixy; |
---|
596 | field.define(nid, dval); |
---|
597 | |
---|
598 | nread++; |
---|
599 | if (++iz >= nz) { |
---|
600 | iz = 0; |
---|
601 | ixy++; |
---|
602 | } |
---|
603 | } |
---|
604 | } |
---|
605 | |
---|
606 | // make sure that we read all of the expected points |
---|
607 | if (nread != nxy*nz) { |
---|
608 | result.addError("inconsistent data: expected %d points " |
---|
609 | "but found %d points", nxy*nz, nread); |
---|
610 | return false; |
---|
611 | } |
---|
612 | |
---|
613 | // figure out a good mesh spacing |
---|
614 | int nsample = 30; |
---|
615 | x0 = field.rangeMin(Rappture::xaxis); |
---|
616 | dx = field.rangeMax(Rappture::xaxis) - field.rangeMin(Rappture::xaxis); |
---|
617 | y0 = field.rangeMin(Rappture::yaxis); |
---|
618 | dy = field.rangeMax(Rappture::yaxis) - field.rangeMin(Rappture::yaxis); |
---|
619 | z0 = field.rangeMin(Rappture::zaxis); |
---|
620 | dz = field.rangeMax(Rappture::zaxis) - field.rangeMin(Rappture::zaxis); |
---|
621 | double dmin = pow((dx*dy*dz)/(nsample*nsample*nsample), 0.333); |
---|
622 | |
---|
623 | nx = (int)ceil(dx/dmin); |
---|
624 | ny = (int)ceil(dy/dmin); |
---|
625 | nz = (int)ceil(dz/dmin); |
---|
626 | #ifndef NV40 |
---|
627 | // must be an even power of 2 for older cards |
---|
628 | nx = (int)pow(2.0, ceil(log10((double)nx)/log10(2.0))); |
---|
629 | ny = (int)pow(2.0, ceil(log10((double)ny)/log10(2.0))); |
---|
630 | nz = (int)pow(2.0, ceil(log10((double)nz)/log10(2.0))); |
---|
631 | #endif |
---|
632 | float *data = new float[4*nx*ny*nz]; |
---|
633 | |
---|
634 | double vmin = field.valueMin(); |
---|
635 | double dv = field.valueMax() - field.valueMin(); |
---|
636 | if (dv == 0.0) { |
---|
637 | dv = 1.0; |
---|
638 | } |
---|
639 | // generate the uniformly sampled data that we need for a volume |
---|
640 | int ngen = 0; |
---|
641 | double nzero_min = 0.0; |
---|
642 | for (iz=0; iz < nz; iz++) { |
---|
643 | double zval = z0 + iz*dmin; |
---|
644 | for (int iy=0; iy < ny; iy++) { |
---|
645 | double yval = y0 + iy*dmin; |
---|
646 | for (int ix=0; ix < nx; ix++) { |
---|
647 | double xval = x0 + ix*dmin; |
---|
648 | double v = field.value(xval,yval,zval); |
---|
649 | |
---|
650 | if (v != 0.0f && v < nzero_min) |
---|
651 | { |
---|
652 | nzero_min = v; |
---|
653 | } |
---|
654 | // scale all values [0-1], -1 => out of bounds |
---|
655 | v = (isnan(v)) ? -1.0 : (v - vmin)/dv; |
---|
656 | data[ngen] = v; |
---|
657 | |
---|
658 | ngen += 4; |
---|
659 | } |
---|
660 | } |
---|
661 | } |
---|
662 | |
---|
663 | // FIXME: This next section of code should be replaced by a |
---|
664 | // call to the computeSimpleGradient() function. There is a slight |
---|
665 | // difference in the code below and the aforementioned function |
---|
666 | // in that the commented out lines in the else statements are |
---|
667 | // different. |
---|
668 | // |
---|
669 | // Compute the gradient of this data. BE CAREFUL: center |
---|
670 | // calculation on each node to avoid skew in either direction. |
---|
671 | ngen = 0; |
---|
672 | for (int iz=0; iz < nz; iz++) { |
---|
673 | for (int iy=0; iy < ny; iy++) { |
---|
674 | for (int ix=0; ix < nx; ix++) { |
---|
675 | // gradient in x-direction |
---|
676 | //double valm1 = (ix == 0) ? 0.0 : data[ngen-4]; |
---|
677 | //double valp1 = (ix == nx-1) ? 0.0 : data[ngen+4]; |
---|
678 | double valm1 = (ix == 0) ? 0.0 : data[ngen-4]; |
---|
679 | double valp1 = (ix == nx-1) ? 0.0 : data[ngen+4]; |
---|
680 | if (valm1 < 0 || valp1 < 0) { |
---|
681 | data[ngen+1] = 0.0; |
---|
682 | } else { |
---|
683 | data[ngen+1] = valp1-valm1; // assume dx=1 |
---|
684 | //data[ngen+1] = ((valp1-valm1) + 1.0) * 0.5; // assume dz=1 |
---|
685 | } |
---|
686 | |
---|
687 | // gradient in y-direction |
---|
688 | valm1 = (iy == 0) ? 0.0 : data[ngen-4*nx]; |
---|
689 | valp1 = (iy == ny-1) ? 0.0 : data[ngen+4*nx]; |
---|
690 | if (valm1 < 0 || valp1 < 0) { |
---|
691 | data[ngen+2] = 0.0; |
---|
692 | } else { |
---|
693 | data[ngen+2] = valp1-valm1; // assume dy=1 |
---|
694 | //data[ngen+2] = ((valp1-valm1) + 1.0) * 0.5; // assume dz=1 |
---|
695 | } |
---|
696 | |
---|
697 | // gradient in z-direction |
---|
698 | valm1 = (iz == 0) ? 0.0 : data[ngen-4*nx*ny]; |
---|
699 | valp1 = (iz == nz-1) ? 0.0 : data[ngen+4*nx*ny]; |
---|
700 | if (valm1 < 0 || valp1 < 0) { |
---|
701 | data[ngen+3] = 0.0; |
---|
702 | } else { |
---|
703 | data[ngen+3] = valp1-valm1; // assume dz=1 |
---|
704 | //data[ngen+3] = ((valp1-valm1) + 1.0) * 0.5; // assume dz=1 |
---|
705 | } |
---|
706 | |
---|
707 | ngen += 4; |
---|
708 | } |
---|
709 | } |
---|
710 | } |
---|
711 | |
---|
712 | Volume *volPtr; |
---|
713 | volPtr = NanoVis::load_volume(index, nx, ny, nz, 4, data, |
---|
714 | field.valueMin(), field.valueMax(), nzero_min); |
---|
715 | volPtr->xAxis.SetRange(field.rangeMin(Rappture::xaxis), |
---|
716 | field.rangeMax(Rappture::xaxis)); |
---|
717 | volPtr->yAxis.SetRange(field.rangeMin(Rappture::yaxis), |
---|
718 | field.rangeMax(Rappture::yaxis)); |
---|
719 | volPtr->zAxis.SetRange(field.rangeMin(Rappture::zaxis), |
---|
720 | field.rangeMax(Rappture::zaxis)); |
---|
721 | volPtr->wAxis.SetRange(field.valueMin(), field.valueMax()); |
---|
722 | volPtr->update_pending = true; |
---|
723 | delete [] data; |
---|
724 | } |
---|
725 | } else { |
---|
726 | result.addError("data not found in stream"); |
---|
727 | return false; |
---|
728 | } |
---|
729 | |
---|
730 | // |
---|
731 | // Center this new volume on the origin. |
---|
732 | // |
---|
733 | float dx0 = -0.5; |
---|
734 | float dy0 = -0.5*dy/dx; |
---|
735 | float dz0 = -0.5*dz/dx; |
---|
736 | NanoVis::volume[index]->move(Vector3(dx0, dy0, dz0)); |
---|
737 | return true; |
---|
738 | } |
---|
739 | |
---|
740 | Rappture::Outcome |
---|
741 | load_volume_stream(int index, std::iostream& fin) |
---|
742 | { |
---|
743 | printf("load_volume_stream\n"); |
---|
744 | Rappture::Outcome result; |
---|
745 | |
---|
746 | Rappture::MeshTri2D xymesh; |
---|
747 | int dummy, nx, ny, nz, nxy, npts; |
---|
748 | double x0, y0, z0, dx, dy, dz, ddx, ddy, ddz; |
---|
749 | char line[128], type[128], *start; |
---|
750 | |
---|
751 | int isrect = 1; |
---|
752 | |
---|
753 | dx = dy = dz = 0.0; // Suppress compiler warning. |
---|
754 | x0 = y0 = z0 = 0.0; // May not have an origin line. |
---|
755 | while (!fin.eof()) { |
---|
756 | fin.getline(line, sizeof(line) - 1); |
---|
757 | if (fin.fail()) { |
---|
758 | return result.error("error in data stream"); |
---|
759 | } |
---|
760 | for (start=line; *start == ' ' || *start == '\t'; start++) |
---|
761 | ; // skip leading blanks |
---|
762 | |
---|
763 | if (*start != '#') { // skip comment lines |
---|
764 | if (sscanf(start, "object %d class gridpositions counts %d %d %d", &dummy, &nx, &ny, &nz) == 4) { |
---|
765 | // found grid size |
---|
766 | isrect = 1; |
---|
767 | } else if (sscanf(start, "object %d class array type float rank 1 shape 3 items %d data follows", &dummy, &nxy) == 2) { |
---|
768 | isrect = 0; |
---|
769 | |
---|
770 | double xx, yy, zz; |
---|
771 | for (int i=0; i < nxy; i++) { |
---|
772 | fin.getline(line,sizeof(line)-1); |
---|
773 | if (sscanf(line, "%lg %lg %lg", &xx, &yy, &zz) == 3) { |
---|
774 | xymesh.addNode( Rappture::Node2D(xx,yy) ); |
---|
775 | } |
---|
776 | } |
---|
777 | |
---|
778 | char fpts[128]; |
---|
779 | sprintf(fpts, "/tmp/tmppts%d", getpid()); |
---|
780 | char fcells[128]; |
---|
781 | sprintf(fcells, "/tmp/tmpcells%d", getpid()); |
---|
782 | |
---|
783 | std::ofstream ftmp(fpts); |
---|
784 | // save corners of bounding box first, to work around meshing |
---|
785 | // problems in voronoi utility |
---|
786 | ftmp << xymesh.rangeMin(Rappture::xaxis) << " " |
---|
787 | << xymesh.rangeMin(Rappture::yaxis) << std::endl; |
---|
788 | ftmp << xymesh.rangeMax(Rappture::xaxis) << " " |
---|
789 | << xymesh.rangeMin(Rappture::yaxis) << std::endl; |
---|
790 | ftmp << xymesh.rangeMax(Rappture::xaxis) << " " |
---|
791 | << xymesh.rangeMax(Rappture::yaxis) << std::endl; |
---|
792 | ftmp << xymesh.rangeMin(Rappture::xaxis) << " " |
---|
793 | << xymesh.rangeMax(Rappture::yaxis) << std::endl; |
---|
794 | for (int i=0; i < nxy; i++) { |
---|
795 | ftmp << xymesh.atNode(i).x() << " " << xymesh.atNode(i).y() << std::endl; |
---|
796 | |
---|
797 | } |
---|
798 | ftmp.close(); |
---|
799 | |
---|
800 | char cmdstr[512]; |
---|
801 | sprintf(cmdstr, "voronoi -t < %s > %s", fpts, fcells); |
---|
802 | if (system(cmdstr) == 0) { |
---|
803 | int cx, cy, cz; |
---|
804 | std::ifstream ftri(fcells); |
---|
805 | while (!ftri.eof()) { |
---|
806 | ftri.getline(line,sizeof(line)-1); |
---|
807 | if (sscanf(line, "%d %d %d", &cx, &cy, &cz) == 3) { |
---|
808 | if (cx >= 4 && cy >= 4 && cz >= 4) { |
---|
809 | // skip first 4 boundary points |
---|
810 | xymesh.addCell(cx-4, cy-4, cz-4); |
---|
811 | } |
---|
812 | } |
---|
813 | } |
---|
814 | ftri.close(); |
---|
815 | } else { |
---|
816 | return result.error("triangularization failed"); |
---|
817 | } |
---|
818 | unlink(fpts); |
---|
819 | unlink(fcells); |
---|
820 | } else if (sscanf(start, "object %d class regulararray count %d", &dummy, &nz) == 2) { |
---|
821 | // found z-grid |
---|
822 | } else if (sscanf(start, "origin %lg %lg %lg", &x0, &y0, &z0) == 3) { |
---|
823 | // found origin |
---|
824 | } else if (sscanf(start, "delta %lg %lg %lg", &ddx, &ddy, &ddz) == 3) { |
---|
825 | // found one of the delta lines |
---|
826 | if (ddx != 0.0) { dx = ddx; } |
---|
827 | else if (ddy != 0.0) { dy = ddy; } |
---|
828 | else if (ddz != 0.0) { dz = ddz; } |
---|
829 | } else if (sscanf(start, "object %d class array type %s rank 0 items %d data follows", &dummy, type, &npts) == 3) { |
---|
830 | if (isrect && (npts != nx*ny*nz)) { |
---|
831 | result.addError("inconsistent data: expected %d points" |
---|
832 | " but found %d points", nx*ny*nz, npts); |
---|
833 | return false; |
---|
834 | } else if (!isrect && (npts != nxy*nz)) { |
---|
835 | result.addError("inconsistent data: expected %d points" |
---|
836 | " but found %d points", nx*ny*nz, npts); |
---|
837 | return false; |
---|
838 | } |
---|
839 | break; |
---|
840 | } else if (sscanf(start, "object %d class array type %s rank 0 times %d data follows", &dummy, type, &npts) == 3) { |
---|
841 | if (npts != nx*ny*nz) { |
---|
842 | result.addError("inconsistent data: expected %d points" |
---|
843 | " but found %d points", nx*ny*nz, npts); |
---|
844 | return false; |
---|
845 | } |
---|
846 | break; |
---|
847 | } |
---|
848 | } |
---|
849 | } |
---|
850 | |
---|
851 | // read data points |
---|
852 | if (!fin.eof()) { |
---|
853 | if (isrect) { |
---|
854 | Rappture::Mesh1D xgrid(x0, x0+nx*dx, nx); |
---|
855 | Rappture::Mesh1D ygrid(y0, y0+ny*dy, ny); |
---|
856 | Rappture::Mesh1D zgrid(z0, z0+nz*dz, nz); |
---|
857 | Rappture::FieldRect3D field(xgrid, ygrid, zgrid); |
---|
858 | |
---|
859 | double dval[6]; |
---|
860 | int nread = 0; |
---|
861 | int ix = 0; |
---|
862 | int iy = 0; |
---|
863 | int iz = 0; |
---|
864 | while (!fin.eof() && nread < npts) { |
---|
865 | fin.getline(line,sizeof(line)-1); |
---|
866 | if (fin.fail()) { |
---|
867 | return result.error("error reading data points"); |
---|
868 | } |
---|
869 | int n = sscanf(line, "%lg %lg %lg %lg %lg %lg", &dval[0], &dval[1], &dval[2], &dval[3], &dval[4], &dval[5]); |
---|
870 | |
---|
871 | for (int p=0; p < n; p++) { |
---|
872 | int nindex = iz*nx*ny + iy*nx + ix; |
---|
873 | field.define(nindex, dval[p]); |
---|
874 | fprintf(stderr,"nindex = %i\tdval[%i] = %lg\n", nindex, p, |
---|
875 | dval[p]); |
---|
876 | fflush(stderr); |
---|
877 | nread++; |
---|
878 | if (++iz >= nz) { |
---|
879 | iz = 0; |
---|
880 | if (++iy >= ny) { |
---|
881 | iy = 0; |
---|
882 | ++ix; |
---|
883 | } |
---|
884 | } |
---|
885 | } |
---|
886 | } |
---|
887 | |
---|
888 | // make sure that we read all of the expected points |
---|
889 | if (nread != nx*ny*nz) { |
---|
890 | result.addError("inconsistent data: expected %d points" |
---|
891 | " but found %d points", nx*ny*nz, npts); |
---|
892 | return false; |
---|
893 | } |
---|
894 | |
---|
895 | // figure out a good mesh spacing |
---|
896 | int nsample = 30; |
---|
897 | dx = field.rangeMax(Rappture::xaxis) - field.rangeMin(Rappture::xaxis); |
---|
898 | dy = field.rangeMax(Rappture::yaxis) - field.rangeMin(Rappture::yaxis); |
---|
899 | dz = field.rangeMax(Rappture::zaxis) - field.rangeMin(Rappture::zaxis); |
---|
900 | double dmin = pow((dx*dy*dz)/(nsample*nsample*nsample), 0.333); |
---|
901 | |
---|
902 | nx = (int)ceil(dx/dmin); |
---|
903 | ny = (int)ceil(dy/dmin); |
---|
904 | nz = (int)ceil(dz/dmin); |
---|
905 | |
---|
906 | #ifndef NV40 |
---|
907 | // must be an even power of 2 for older cards |
---|
908 | nx = (int)pow(2.0, ceil(log10((double)nx)/log10(2.0))); |
---|
909 | ny = (int)pow(2.0, ceil(log10((double)ny)/log10(2.0))); |
---|
910 | nz = (int)pow(2.0, ceil(log10((double)nz)/log10(2.0))); |
---|
911 | #endif |
---|
912 | |
---|
913 | //#define _SOBEL |
---|
914 | #ifdef _SOBEL_ |
---|
915 | const int step = 1; |
---|
916 | float *cdata = new float[nx*ny*nz * step]; |
---|
917 | int ngen = 0; |
---|
918 | double nzero_min = 0.0; |
---|
919 | for (int iz=0; iz < nz; iz++) { |
---|
920 | double zval = z0 + iz*dmin; |
---|
921 | for (int iy=0; iy < ny; iy++) { |
---|
922 | double yval = y0 + iy*dmin; |
---|
923 | for (int ix=0; ix < nx; ix++) { |
---|
924 | double xval = x0 + ix*dmin; |
---|
925 | double v = field.value(xval,yval,zval); |
---|
926 | |
---|
927 | if (v != 0.0f && v < nzero_min) { |
---|
928 | nzero_min = v; |
---|
929 | } |
---|
930 | |
---|
931 | // scale all values [0-1], -1 => out of bounds |
---|
932 | v = (isnan(v)) ? -1.0 : v; |
---|
933 | |
---|
934 | cdata[ngen] = v; |
---|
935 | ngen += step; |
---|
936 | } |
---|
937 | } |
---|
938 | } |
---|
939 | |
---|
940 | float* data = computeGradient(cdata, nx, ny, nz, field.valueMin(), |
---|
941 | field.valueMax()); |
---|
942 | #else |
---|
943 | double vmin = field.valueMin(); |
---|
944 | double vmax = field.valueMax(); |
---|
945 | double nzero_min = 0; |
---|
946 | float *data = new float[nx*ny*nz * 4]; |
---|
947 | double dv = vmax - vmin; |
---|
948 | int ngen = 0; |
---|
949 | if (dv == 0.0) dv = 1.0; |
---|
950 | |
---|
951 | for (int iz=0; iz < nz; iz++) { |
---|
952 | double zval = z0 + iz*dmin; |
---|
953 | for (int iy=0; iy < ny; iy++) { |
---|
954 | double yval = y0 + iy*dmin; |
---|
955 | for (int ix=0; ix < nx; ix++) { |
---|
956 | double xval = x0 + ix*dmin; |
---|
957 | double v = field.value(xval,yval,zval); |
---|
958 | |
---|
959 | // scale all values [0-1], -1 => out of bounds |
---|
960 | v = (isnan(v)) ? -1.0 : (v - vmin)/dv; |
---|
961 | |
---|
962 | data[ngen] = v; |
---|
963 | ngen += 4; |
---|
964 | } |
---|
965 | } |
---|
966 | } |
---|
967 | |
---|
968 | computeSimpleGradient(data, nx, ny, nz); |
---|
969 | #endif |
---|
970 | |
---|
971 | for (int i=0; i<nx*ny*nz; i++) { |
---|
972 | fprintf(stderr,"enddata[%i] = %lg\n",i,data[i]); |
---|
973 | fflush(stderr); |
---|
974 | } |
---|
975 | |
---|
976 | fprintf(stdout,"End Data Stats index = %i\n",index); |
---|
977 | fprintf(stdout,"nx = %i ny = %i nz = %i\n",nx,ny,nz); |
---|
978 | fprintf(stdout,"dx = %lg dy = %lg dz = %lg\n",dx,dy,dz); |
---|
979 | fprintf(stdout,"dataMin = %lg\tdataMax = %lg\tnzero_min = %lg\n", field.valueMin(),field.valueMax(),nzero_min); |
---|
980 | fflush(stdout); |
---|
981 | |
---|
982 | Volume *volPtr; |
---|
983 | volPtr = NanoVis::load_volume(index, nx, ny, nz, 4, data, |
---|
984 | field.valueMin(), field.valueMax(), nzero_min); |
---|
985 | volPtr->xAxis.SetRange(field.rangeMin(Rappture::xaxis), |
---|
986 | field.rangeMax(Rappture::xaxis)); |
---|
987 | volPtr->yAxis.SetRange(field.rangeMin(Rappture::yaxis), |
---|
988 | field.rangeMax(Rappture::yaxis)); |
---|
989 | volPtr->zAxis.SetRange(field.rangeMin(Rappture::zaxis), |
---|
990 | field.rangeMax(Rappture::zaxis)); |
---|
991 | volPtr->wAxis.SetRange(field.valueMin(), field.valueMax()); |
---|
992 | volPtr->update_pending = true; |
---|
993 | // TBD.. |
---|
994 | // POINTSET |
---|
995 | /* |
---|
996 | PointSet* pset = new PointSet(); |
---|
997 | pset->initialize(volume[index], (float*) data); |
---|
998 | pset->setVisible(true); |
---|
999 | NanoVis::pointSet.push_back(pset); |
---|
1000 | updateColor(pset); |
---|
1001 | NanoVis::volume[index]->pointsetIndex = NanoVis::pointSet.size() - 1; |
---|
1002 | */ |
---|
1003 | |
---|
1004 | delete [] data; |
---|
1005 | |
---|
1006 | } else { |
---|
1007 | Rappture::Mesh1D zgrid(z0, z0+nz*dz, nz); |
---|
1008 | Rappture::FieldPrism3D field(xymesh, zgrid); |
---|
1009 | |
---|
1010 | double dval; |
---|
1011 | int nread = 0; |
---|
1012 | int ixy = 0; |
---|
1013 | int iz = 0; |
---|
1014 | while (!fin.eof() && nread < npts) { |
---|
1015 | fin >> dval; |
---|
1016 | if (fin.fail()) { |
---|
1017 | char mesg[256]; |
---|
1018 | sprintf(mesg,"after %d of %d points: can't read number", |
---|
1019 | nread, npts); |
---|
1020 | return result.error(mesg); |
---|
1021 | } else { |
---|
1022 | int nid = nxy*iz + ixy; |
---|
1023 | field.define(nid, dval); |
---|
1024 | |
---|
1025 | nread++; |
---|
1026 | if (++iz >= nz) { |
---|
1027 | iz = 0; |
---|
1028 | ixy++; |
---|
1029 | } |
---|
1030 | } |
---|
1031 | } |
---|
1032 | |
---|
1033 | // make sure that we read all of the expected points |
---|
1034 | if (nread != nxy*nz) { |
---|
1035 | result.addError("inconsistent data: expected %d points" |
---|
1036 | " but found %d points", nx*ny*nz, npts); |
---|
1037 | return false; |
---|
1038 | } |
---|
1039 | |
---|
1040 | // figure out a good mesh spacing |
---|
1041 | int nsample = 30; |
---|
1042 | x0 = field.rangeMin(Rappture::xaxis); |
---|
1043 | dx = field.rangeMax(Rappture::xaxis) - field.rangeMin(Rappture::xaxis); |
---|
1044 | y0 = field.rangeMin(Rappture::yaxis); |
---|
1045 | dy = field.rangeMax(Rappture::yaxis) - field.rangeMin(Rappture::yaxis); |
---|
1046 | z0 = field.rangeMin(Rappture::zaxis); |
---|
1047 | dz = field.rangeMax(Rappture::zaxis) - field.rangeMin(Rappture::zaxis); |
---|
1048 | double dmin = pow((dx*dy*dz)/(nsample*nsample*nsample), 0.333); |
---|
1049 | |
---|
1050 | nx = (int)ceil(dx/dmin); |
---|
1051 | ny = (int)ceil(dy/dmin); |
---|
1052 | nz = (int)ceil(dz/dmin); |
---|
1053 | #ifndef NV40 |
---|
1054 | // must be an even power of 2 for older cards |
---|
1055 | nx = (int)pow(2.0, ceil(log10((double)nx)/log10(2.0))); |
---|
1056 | ny = (int)pow(2.0, ceil(log10((double)ny)/log10(2.0))); |
---|
1057 | nz = (int)pow(2.0, ceil(log10((double)nz)/log10(2.0))); |
---|
1058 | #endif |
---|
1059 | float *data = new float[4*nx*ny*nz]; |
---|
1060 | |
---|
1061 | double vmin = field.valueMin(); |
---|
1062 | double dv = field.valueMax() - field.valueMin(); |
---|
1063 | if (dv == 0.0) { dv = 1.0; } |
---|
1064 | |
---|
1065 | // generate the uniformly sampled data that we need for a volume |
---|
1066 | int ngen = 0; |
---|
1067 | double nzero_min = 0.0; |
---|
1068 | for (iz=0; iz < nz; iz++) { |
---|
1069 | double zval = z0 + iz*dmin; |
---|
1070 | for (int iy=0; iy < ny; iy++) { |
---|
1071 | double yval = y0 + iy*dmin; |
---|
1072 | for (int ix=0; ix < nx; ix++) { |
---|
1073 | double xval = x0 + ix*dmin; |
---|
1074 | double v = field.value(xval,yval,zval); |
---|
1075 | |
---|
1076 | if (v != 0.0f && v < nzero_min) |
---|
1077 | { |
---|
1078 | nzero_min = v; |
---|
1079 | } |
---|
1080 | // scale all values [0-1], -1 => out of bounds |
---|
1081 | v = (isnan(v)) ? -1.0 : (v - vmin)/dv; |
---|
1082 | data[ngen] = v; |
---|
1083 | |
---|
1084 | ngen += 4; |
---|
1085 | } |
---|
1086 | } |
---|
1087 | } |
---|
1088 | |
---|
1089 | // Compute the gradient of this data. BE CAREFUL: center |
---|
1090 | // calculation on each node to avoid skew in either direction. |
---|
1091 | ngen = 0; |
---|
1092 | for (int iz=0; iz < nz; iz++) { |
---|
1093 | for (int iy=0; iy < ny; iy++) { |
---|
1094 | for (int ix=0; ix < nx; ix++) { |
---|
1095 | // gradient in x-direction |
---|
1096 | double valm1 = (ix == 0) ? 0.0 : data[ngen-1]; |
---|
1097 | double valp1 = (ix == nx-1) ? 0.0 : data[ngen+1]; |
---|
1098 | if (valm1 < 0 || valp1 < 0) { |
---|
1099 | data[ngen+1] = 0.0; |
---|
1100 | } else { |
---|
1101 | data[ngen+1] = valp1-valm1; // assume dx=1 |
---|
1102 | //data[ngen+1] = ((valp1-valm1) + 1) * 0.5; // assume dx=1 (ISO) |
---|
1103 | } |
---|
1104 | |
---|
1105 | // gradient in y-direction |
---|
1106 | valm1 = (iy == 0) ? 0.0 : data[ngen-4*nx]; |
---|
1107 | valp1 = (iy == ny-1) ? 0.0 : data[ngen+4*nx]; |
---|
1108 | if (valm1 < 0 || valp1 < 0) { |
---|
1109 | data[ngen+2] = 0.0; |
---|
1110 | } else { |
---|
1111 | data[ngen+2] = valp1-valm1; // assume dy=1 |
---|
1112 | //data[ngen+2] = ((valp1-valm1) + 1) * 0.5; // assume dy=1 (ISO) |
---|
1113 | } |
---|
1114 | |
---|
1115 | // gradient in z-direction |
---|
1116 | valm1 = (iz == 0) ? 0.0 : data[ngen-4*nx*ny]; |
---|
1117 | valp1 = (iz == nz-1) ? 0.0 : data[ngen+4*nx*ny]; |
---|
1118 | if (valm1 < 0 || valp1 < 0) { |
---|
1119 | data[ngen+3] = 0.0; |
---|
1120 | } else { |
---|
1121 | data[ngen+3] = valp1-valm1; // assume dz=1 |
---|
1122 | //data[ngen+3] = ((valp1-valm1) + 1) * 0.5; // assume dz=1 (ISO) |
---|
1123 | } |
---|
1124 | |
---|
1125 | ngen += 4; |
---|
1126 | } |
---|
1127 | } |
---|
1128 | } |
---|
1129 | |
---|
1130 | Volume *volPtr; |
---|
1131 | volPtr = NanoVis::load_volume(index, nx, ny, nz, 4, data, |
---|
1132 | field.valueMin(), field.valueMax(), nzero_min); |
---|
1133 | volPtr->xAxis.SetRange(field.rangeMin(Rappture::xaxis), |
---|
1134 | field.rangeMax(Rappture::xaxis)); |
---|
1135 | volPtr->yAxis.SetRange(field.rangeMin(Rappture::yaxis), |
---|
1136 | field.rangeMax(Rappture::yaxis)); |
---|
1137 | volPtr->zAxis.SetRange(field.rangeMin(Rappture::zaxis), |
---|
1138 | field.rangeMax(Rappture::zaxis)); |
---|
1139 | volPtr->wAxis.SetRange(field.valueMin(), field.valueMax()); |
---|
1140 | volPtr->update_pending = true; |
---|
1141 | // TBD.. |
---|
1142 | // POINTSET |
---|
1143 | /* |
---|
1144 | PointSet* pset = new PointSet(); |
---|
1145 | pset->initialize(volume[index], (float*) data); |
---|
1146 | pset->setVisible(true); |
---|
1147 | NanoVis::pointSet.push_back(pset); |
---|
1148 | updateColor(pset); |
---|
1149 | NanoVis::volume[index]->pointsetIndex = NanoVis::pointSet.size() - 1; |
---|
1150 | */ |
---|
1151 | |
---|
1152 | |
---|
1153 | delete [] data; |
---|
1154 | } |
---|
1155 | } else { |
---|
1156 | return result.error("data not found in stream"); |
---|
1157 | } |
---|
1158 | |
---|
1159 | // |
---|
1160 | // Center this new volume on the origin. |
---|
1161 | // |
---|
1162 | float dx0 = -0.5; |
---|
1163 | float dy0 = -0.5*dy/dx; |
---|
1164 | float dz0 = -0.5*dz/dx; |
---|
1165 | NanoVis::volume[index]->move(Vector3(dx0, dy0, dz0)); |
---|
1166 | return result; |
---|
1167 | } |
---|
1168 | |
---|
1169 | Rappture::Outcome |
---|
1170 | load_volume_stream_insoo(int index, std::iostream& fin) |
---|
1171 | { |
---|
1172 | printf("load_volume_stream\n"); |
---|
1173 | Rappture::Outcome result; |
---|
1174 | |
---|
1175 | Rappture::MeshTri2D xymesh; |
---|
1176 | int dummy, nx, ny, nz, nxy, npts; |
---|
1177 | double x0, y0, z0, dx, dy, dz, ddx, ddy, ddz; |
---|
1178 | char line[128], type[128], *start; |
---|
1179 | |
---|
1180 | int isrect = 1; |
---|
1181 | |
---|
1182 | dx = dy = dz = 0.0; // Suppress compiler warning. |
---|
1183 | x0 = y0 = z0 = 0.0; // May not have an origin line. |
---|
1184 | while (!fin.eof()) { |
---|
1185 | fin.getline(line, sizeof(line) - 1); |
---|
1186 | if (fin.fail()) { |
---|
1187 | return result.error("error in data stream"); |
---|
1188 | } |
---|
1189 | for (start=line; *start == ' ' || *start == '\t'; start++) |
---|
1190 | ; // skip leading blanks |
---|
1191 | |
---|
1192 | if (*start != '#') { // skip comment lines |
---|
1193 | if (sscanf(start, "object %d class gridpositions counts %d %d %d", &dummy, &nx, &ny, &nz) == 4) { |
---|
1194 | // found grid size |
---|
1195 | isrect = 1; |
---|
1196 | } else if (sscanf(start, "object %d class array type float rank 1 shape 3 items %d data follows", &dummy, &nxy) == 2) { |
---|
1197 | isrect = 0; |
---|
1198 | |
---|
1199 | double xx, yy, zz; |
---|
1200 | for (int i=0; i < nxy; i++) { |
---|
1201 | fin.getline(line,sizeof(line)-1); |
---|
1202 | if (sscanf(line, "%lg %lg %lg", &xx, &yy, &zz) == 3) { |
---|
1203 | xymesh.addNode( Rappture::Node2D(xx,yy) ); |
---|
1204 | } |
---|
1205 | } |
---|
1206 | |
---|
1207 | char fpts[128]; |
---|
1208 | sprintf(fpts, "/tmp/tmppts%d", getpid()); |
---|
1209 | char fcells[128]; |
---|
1210 | sprintf(fcells, "/tmp/tmpcells%d", getpid()); |
---|
1211 | |
---|
1212 | std::ofstream ftmp(fpts); |
---|
1213 | // save corners of bounding box first, to work around meshing |
---|
1214 | // problems in voronoi utility |
---|
1215 | ftmp << xymesh.rangeMin(Rappture::xaxis) << " " |
---|
1216 | << xymesh.rangeMin(Rappture::yaxis) << std::endl; |
---|
1217 | ftmp << xymesh.rangeMax(Rappture::xaxis) << " " |
---|
1218 | << xymesh.rangeMin(Rappture::yaxis) << std::endl; |
---|
1219 | ftmp << xymesh.rangeMax(Rappture::xaxis) << " " |
---|
1220 | << xymesh.rangeMax(Rappture::yaxis) << std::endl; |
---|
1221 | ftmp << xymesh.rangeMin(Rappture::xaxis) << " " |
---|
1222 | << xymesh.rangeMax(Rappture::yaxis) << std::endl; |
---|
1223 | for (int i=0; i < nxy; i++) { |
---|
1224 | ftmp << xymesh.atNode(i).x() << " " << xymesh.atNode(i).y() << std::endl; |
---|
1225 | |
---|
1226 | } |
---|
1227 | ftmp.close(); |
---|
1228 | |
---|
1229 | char cmdstr[512]; |
---|
1230 | sprintf(cmdstr, "voronoi -t < %s > %s", fpts, fcells); |
---|
1231 | if (system(cmdstr) == 0) { |
---|
1232 | int cx, cy, cz; |
---|
1233 | std::ifstream ftri(fcells); |
---|
1234 | while (!ftri.eof()) { |
---|
1235 | ftri.getline(line,sizeof(line)-1); |
---|
1236 | if (sscanf(line, "%d %d %d", &cx, &cy, &cz) == 3) { |
---|
1237 | if (cx >= 4 && cy >= 4 && cz >= 4) { |
---|
1238 | // skip first 4 boundary points |
---|
1239 | xymesh.addCell(cx-4, cy-4, cz-4); |
---|
1240 | } |
---|
1241 | } |
---|
1242 | } |
---|
1243 | ftri.close(); |
---|
1244 | } else { |
---|
1245 | return result.error("triangularization failed"); |
---|
1246 | } |
---|
1247 | unlink(fpts), unlink(fcells); |
---|
1248 | } else if (sscanf(start, "object %d class regulararray count %d", &dummy, &nz) == 2) { |
---|
1249 | // found z-grid |
---|
1250 | } else if (sscanf(start, "origin %lg %lg %lg", &x0, &y0, &z0) == 3) { |
---|
1251 | // found origin |
---|
1252 | } else if (sscanf(start, "delta %lg %lg %lg", &ddx, &ddy, &ddz) == 3) { |
---|
1253 | // found one of the delta lines |
---|
1254 | if (ddx != 0.0) { dx = ddx; } |
---|
1255 | else if (ddy != 0.0) { dy = ddy; } |
---|
1256 | else if (ddz != 0.0) { dz = ddz; } |
---|
1257 | } else if (sscanf(start, "object %d class array type %s rank 0 items %d data follows", &dummy, type, &npts) == 3) { |
---|
1258 | if (isrect && (npts != nx*ny*nz)) { |
---|
1259 | result.addError("inconsistent data: expected %d points" |
---|
1260 | " but found %d points", nx*ny*nz, npts); |
---|
1261 | return false; |
---|
1262 | } else if (!isrect && (npts != nxy*nz)) { |
---|
1263 | result.addError("inconsistent data: expected %d points" |
---|
1264 | " but found %d points", nx*ny*nz, npts); |
---|
1265 | return false; |
---|
1266 | } |
---|
1267 | break; |
---|
1268 | } else if (sscanf(start, "object %d class array type %s rank 0 times %d data follows", &dummy, type, &npts) == 3) { |
---|
1269 | if (npts != nx*ny*nz) { |
---|
1270 | result.addError("inconsistent data: expected %d points" |
---|
1271 | " but found %d points", nx*ny*nz, npts); |
---|
1272 | return false; |
---|
1273 | } |
---|
1274 | break; |
---|
1275 | } |
---|
1276 | } |
---|
1277 | } |
---|
1278 | |
---|
1279 | // read data points |
---|
1280 | if (!fin.eof()) { |
---|
1281 | if (isrect) { |
---|
1282 | Rappture::Mesh1D xgrid(x0, x0+nx*dx, nx); |
---|
1283 | Rappture::Mesh1D ygrid(y0, y0+ny*dy, ny); |
---|
1284 | Rappture::Mesh1D zgrid(z0, z0+nz*dz, nz); |
---|
1285 | Rappture::FieldRect3D field(xgrid, ygrid, zgrid); |
---|
1286 | |
---|
1287 | double dval[6]; |
---|
1288 | int nread = 0; |
---|
1289 | int ix = 0; |
---|
1290 | int iy = 0; |
---|
1291 | int iz = 0; |
---|
1292 | while (!fin.eof() && nread < npts) { |
---|
1293 | fin.getline(line,sizeof(line)-1); |
---|
1294 | if (fin.fail()) { |
---|
1295 | return result.error("error reading data points"); |
---|
1296 | } |
---|
1297 | int n = sscanf(line, "%lg %lg %lg %lg %lg %lg", &dval[0], &dval[1], &dval[2], &dval[3], &dval[4], &dval[5]); |
---|
1298 | |
---|
1299 | for (int p=0; p < n; p++) { |
---|
1300 | int nindex = iz*nx*ny + iy*nx + ix; |
---|
1301 | field.define(nindex, dval[p]); |
---|
1302 | fprintf(stderr,"nindex = %i\tdval[%i] = %lg\n", nindex, p, |
---|
1303 | dval[p]); |
---|
1304 | fflush(stderr); |
---|
1305 | nread++; |
---|
1306 | if (++iz >= nz) { |
---|
1307 | iz = 0; |
---|
1308 | if (++iy >= ny) { |
---|
1309 | iy = 0; |
---|
1310 | ++ix; |
---|
1311 | } |
---|
1312 | } |
---|
1313 | } |
---|
1314 | } |
---|
1315 | |
---|
1316 | // make sure that we read all of the expected points |
---|
1317 | if (nread != nx*ny*nz) { |
---|
1318 | result.addError("inconsistent data: expected %d points" |
---|
1319 | " but found %d points", nx*ny*nz, npts); |
---|
1320 | return false; |
---|
1321 | } |
---|
1322 | |
---|
1323 | // figure out a good mesh spacing |
---|
1324 | int nsample = 30; |
---|
1325 | dx = field.rangeMax(Rappture::xaxis) - field.rangeMin(Rappture::xaxis); |
---|
1326 | dy = field.rangeMax(Rappture::yaxis) - field.rangeMin(Rappture::yaxis); |
---|
1327 | dz = field.rangeMax(Rappture::zaxis) - field.rangeMin(Rappture::zaxis); |
---|
1328 | double dmin = pow((dx*dy*dz)/(nsample*nsample*nsample), 0.333); |
---|
1329 | |
---|
1330 | nx = (int)ceil(dx/dmin); |
---|
1331 | ny = (int)ceil(dy/dmin); |
---|
1332 | nz = (int)ceil(dz/dmin); |
---|
1333 | |
---|
1334 | #ifndef NV40 |
---|
1335 | // must be an even power of 2 for older cards |
---|
1336 | nx = (int)pow(2.0, ceil(log10((double)nx)/log10(2.0))); |
---|
1337 | ny = (int)pow(2.0, ceil(log10((double)ny)/log10(2.0))); |
---|
1338 | nz = (int)pow(2.0, ceil(log10((double)nz)/log10(2.0))); |
---|
1339 | #endif |
---|
1340 | |
---|
1341 | float *data = new float[4*nx*ny*nz]; |
---|
1342 | |
---|
1343 | double vmin = field.valueMin(); |
---|
1344 | double dv = field.valueMax() - field.valueMin(); |
---|
1345 | if (dv == 0.0) { dv = 1.0; } |
---|
1346 | |
---|
1347 | int ngen = 0; |
---|
1348 | double nzero_min = 0.0; |
---|
1349 | for (iz=0; iz < nz; iz++) { |
---|
1350 | double zval = z0 + iz*dmin; |
---|
1351 | for (int iy=0; iy < ny; iy++) { |
---|
1352 | double yval = y0 + iy*dmin; |
---|
1353 | for (int ix=0; ix < nx; ix++) { |
---|
1354 | double xval = x0 + ix*dmin; |
---|
1355 | double v = field.value(xval,yval,zval); |
---|
1356 | |
---|
1357 | if (v != 0.0f && v < nzero_min) |
---|
1358 | { |
---|
1359 | nzero_min = v; |
---|
1360 | } |
---|
1361 | // scale all values [0-1], -1 => out of bounds |
---|
1362 | v = (isnan(v)) ? -1.0 : (v - vmin)/dv; |
---|
1363 | data[ngen] = v; |
---|
1364 | |
---|
1365 | ngen += 4; |
---|
1366 | } |
---|
1367 | } |
---|
1368 | } |
---|
1369 | |
---|
1370 | // Compute the gradient of this data. BE CAREFUL: center |
---|
1371 | // calculation on each node to avoid skew in either direction. |
---|
1372 | ngen = 0; |
---|
1373 | for (int iz=0; iz < nz; iz++) { |
---|
1374 | for (int iy=0; iy < ny; iy++) { |
---|
1375 | for (int ix=0; ix < nx; ix++) { |
---|
1376 | // gradient in x-direction |
---|
1377 | double valm1 = (ix == 0) ? 0.0 : data[ngen-1]; |
---|
1378 | double valp1 = (ix == nx-1) ? 0.0 : data[ngen+1]; |
---|
1379 | if (valm1 < 0 || valp1 < 0) { |
---|
1380 | data[ngen+1] = 0.0; |
---|
1381 | } else { |
---|
1382 | data[ngen+1] = valp1-valm1; // assume dx=1 |
---|
1383 | //data[ngen+1] = ((valp1-valm1) + 1) * 0.5; // assume dx=1 (ISO) |
---|
1384 | } |
---|
1385 | |
---|
1386 | // gradient in y-direction |
---|
1387 | valm1 = (iy == 0) ? 0.0 : data[ngen-4*nx]; |
---|
1388 | valp1 = (iy == ny-1) ? 0.0 : data[ngen+4*nx]; |
---|
1389 | if (valm1 < 0 || valp1 < 0) { |
---|
1390 | data[ngen+2] = 0.0; |
---|
1391 | } else { |
---|
1392 | data[ngen+2] = valp1-valm1; // assume dy=1 |
---|
1393 | //data[ngen+2] = ((valp1-valm1) + 1) * 0.5; // assume dy=1 (ISO) |
---|
1394 | } |
---|
1395 | |
---|
1396 | // gradient in z-direction |
---|
1397 | valm1 = (iz == 0) ? 0.0 : data[ngen-4*nx*ny]; |
---|
1398 | valp1 = (iz == nz-1) ? 0.0 : data[ngen+4*nx*ny]; |
---|
1399 | if (valm1 < 0 || valp1 < 0) { |
---|
1400 | data[ngen+3] = 0.0; |
---|
1401 | } else { |
---|
1402 | data[ngen+3] = valp1-valm1; // assume dz=1 |
---|
1403 | //data[ngen+3] = ((valp1-valm1) + 1) * 0.5; // assume dz=1 (ISO) |
---|
1404 | } |
---|
1405 | |
---|
1406 | ngen += 4; |
---|
1407 | } |
---|
1408 | } |
---|
1409 | } |
---|
1410 | |
---|
1411 | /* |
---|
1412 | float *cdata = new float[nx*ny*nz]; |
---|
1413 | int ngen = 0; |
---|
1414 | double nzero_min = 0.0; |
---|
1415 | for (int iz=0; iz < nz; iz++) { |
---|
1416 | double zval = z0 + iz*dmin; |
---|
1417 | for (int iy=0; iy < ny; iy++) { |
---|
1418 | double yval = y0 + iy*dmin; |
---|
1419 | for (int ix=0; ix < nx; ix++) { |
---|
1420 | double xval = x0 + ix*dmin; |
---|
1421 | double v = field.value(xval,yval,zval); |
---|
1422 | |
---|
1423 | if (v != 0.0f && v < nzero_min) { |
---|
1424 | nzero_min = v; |
---|
1425 | } |
---|
1426 | |
---|
1427 | // scale all values [0-1], -1 => out of bounds |
---|
1428 | v = (isnan(v)) ? -1.0 : v; |
---|
1429 | |
---|
1430 | cdata[ngen] = v; |
---|
1431 | ++ngen; |
---|
1432 | } |
---|
1433 | } |
---|
1434 | } |
---|
1435 | |
---|
1436 | float* data = computeGradient(cdata, nx, ny, nz, field.valueMin(), |
---|
1437 | field.valueMax()); |
---|
1438 | |
---|
1439 | for (int i=0; i<nx*ny*nz; i++) { |
---|
1440 | fprintf(stderr,"enddata[%i] = %lg\n",i,data[i]); |
---|
1441 | fflush(stderr); |
---|
1442 | } |
---|
1443 | |
---|
1444 | fprintf(stdout,"End Data Stats index = %i\n",index); |
---|
1445 | fprintf(stdout,"nx = %i ny = %i nz = %i\n",nx,ny,nz); |
---|
1446 | fprintf(stdout,"dx = %lg dy = %lg dz = %lg\n",dx,dy,dz); |
---|
1447 | fprintf(stdout,"dataMin = %lg\tdataMax = %lg\tnzero_min = %lg\n", field.valueMin(),field.valueMax(),nzero_min); |
---|
1448 | fflush(stdout); |
---|
1449 | */ |
---|
1450 | |
---|
1451 | Volume *volPtr; |
---|
1452 | volPtr = NanoVis::load_volume(index, nx, ny, nz, 4, data, |
---|
1453 | field.valueMin(), field.valueMax(), nzero_min); |
---|
1454 | volPtr->xAxis.SetRange(field.rangeMin(Rappture::xaxis), |
---|
1455 | field.rangeMax(Rappture::xaxis)); |
---|
1456 | volPtr->yAxis.SetRange(field.rangeMin(Rappture::yaxis), |
---|
1457 | field.rangeMax(Rappture::yaxis)); |
---|
1458 | volPtr->zAxis.SetRange(field.rangeMin(Rappture::zaxis), |
---|
1459 | field.rangeMax(Rappture::zaxis)); |
---|
1460 | volPtr->wAxis.SetRange(field.valueMin(), field.valueMax()); |
---|
1461 | volPtr->update_pending = true; |
---|
1462 | // TBD.. |
---|
1463 | // POINTSET |
---|
1464 | /* |
---|
1465 | PointSet* pset = new PointSet(); |
---|
1466 | pset->initialize(volume[index], (float*) data); |
---|
1467 | pset->setVisible(true); |
---|
1468 | NanoVis::pointSet.push_back(pset); |
---|
1469 | updateColor(pset); |
---|
1470 | NanoVis::volume[index]->pointsetIndex = NanoVis::pointSet.size() - 1; |
---|
1471 | */ |
---|
1472 | |
---|
1473 | delete [] data; |
---|
1474 | |
---|
1475 | } else { |
---|
1476 | Rappture::Mesh1D zgrid(z0, z0+nz*dz, nz); |
---|
1477 | Rappture::FieldPrism3D field(xymesh, zgrid); |
---|
1478 | |
---|
1479 | double dval; |
---|
1480 | int nread = 0; |
---|
1481 | int ixy = 0; |
---|
1482 | int iz = 0; |
---|
1483 | while (!fin.eof() && nread < npts) { |
---|
1484 | fin >> dval; |
---|
1485 | if (fin.fail()) { |
---|
1486 | char mesg[256]; |
---|
1487 | sprintf(mesg,"after %d of %d points: can't read number", |
---|
1488 | nread, npts); |
---|
1489 | return result.error(mesg); |
---|
1490 | } else { |
---|
1491 | int nid = nxy*iz + ixy; |
---|
1492 | field.define(nid, dval); |
---|
1493 | |
---|
1494 | nread++; |
---|
1495 | if (++iz >= nz) { |
---|
1496 | iz = 0; |
---|
1497 | ixy++; |
---|
1498 | } |
---|
1499 | } |
---|
1500 | } |
---|
1501 | |
---|
1502 | // make sure that we read all of the expected points |
---|
1503 | if (nread != nxy*nz) { |
---|
1504 | result.addError("inconsistent data: expected %d points" |
---|
1505 | " but found %d points", nx*ny*nz, npts); |
---|
1506 | return false; |
---|
1507 | } |
---|
1508 | |
---|
1509 | // figure out a good mesh spacing |
---|
1510 | int nsample = 30; |
---|
1511 | x0 = field.rangeMin(Rappture::xaxis); |
---|
1512 | dx = field.rangeMax(Rappture::xaxis) - field.rangeMin(Rappture::xaxis); |
---|
1513 | y0 = field.rangeMin(Rappture::yaxis); |
---|
1514 | dy = field.rangeMax(Rappture::yaxis) - field.rangeMin(Rappture::yaxis); |
---|
1515 | z0 = field.rangeMin(Rappture::zaxis); |
---|
1516 | dz = field.rangeMax(Rappture::zaxis) - field.rangeMin(Rappture::zaxis); |
---|
1517 | double dmin = pow((dx*dy*dz)/(nsample*nsample*nsample), 0.333); |
---|
1518 | |
---|
1519 | nx = (int)ceil(dx/dmin); |
---|
1520 | ny = (int)ceil(dy/dmin); |
---|
1521 | nz = (int)ceil(dz/dmin); |
---|
1522 | #ifndef NV40 |
---|
1523 | // must be an even power of 2 for older cards |
---|
1524 | nx = (int)pow(2.0, ceil(log10((double)nx)/log10(2.0))); |
---|
1525 | ny = (int)pow(2.0, ceil(log10((double)ny)/log10(2.0))); |
---|
1526 | nz = (int)pow(2.0, ceil(log10((double)nz)/log10(2.0))); |
---|
1527 | #endif |
---|
1528 | float *data = new float[4*nx*ny*nz]; |
---|
1529 | |
---|
1530 | double vmin = field.valueMin(); |
---|
1531 | double dv = field.valueMax() - field.valueMin(); |
---|
1532 | if (dv == 0.0) { dv = 1.0; } |
---|
1533 | |
---|
1534 | // generate the uniformly sampled data that we need for a volume |
---|
1535 | int ngen = 0; |
---|
1536 | double nzero_min = 0.0; |
---|
1537 | for (iz=0; iz < nz; iz++) { |
---|
1538 | double zval = z0 + iz*dmin; |
---|
1539 | for (int iy=0; iy < ny; iy++) { |
---|
1540 | double yval = y0 + iy*dmin; |
---|
1541 | for (int ix=0; ix < nx; ix++) { |
---|
1542 | double xval = x0 + ix*dmin; |
---|
1543 | double v = field.value(xval,yval,zval); |
---|
1544 | |
---|
1545 | if (v != 0.0f && v < nzero_min) |
---|
1546 | { |
---|
1547 | nzero_min = v; |
---|
1548 | } |
---|
1549 | // scale all values [0-1], -1 => out of bounds |
---|
1550 | v = (isnan(v)) ? -1.0 : (v - vmin)/dv; |
---|
1551 | data[ngen] = v; |
---|
1552 | |
---|
1553 | ngen += 4; |
---|
1554 | } |
---|
1555 | } |
---|
1556 | } |
---|
1557 | |
---|
1558 | // Compute the gradient of this data. BE CAREFUL: center |
---|
1559 | // calculation on each node to avoid skew in either direction. |
---|
1560 | ngen = 0; |
---|
1561 | for (int iz=0; iz < nz; iz++) { |
---|
1562 | for (int iy=0; iy < ny; iy++) { |
---|
1563 | for (int ix=0; ix < nx; ix++) { |
---|
1564 | // gradient in x-direction |
---|
1565 | double valm1 = (ix == 0) ? 0.0 : data[ngen-1]; |
---|
1566 | double valp1 = (ix == nx-1) ? 0.0 : data[ngen+1]; |
---|
1567 | if (valm1 < 0 || valp1 < 0) { |
---|
1568 | data[ngen+1] = 0.0; |
---|
1569 | } else { |
---|
1570 | data[ngen+1] = valp1-valm1; // assume dx=1 |
---|
1571 | //data[ngen+1] = ((valp1-valm1) + 1) * 0.5; // assume dx=1 (ISO) |
---|
1572 | } |
---|
1573 | |
---|
1574 | // gradient in y-direction |
---|
1575 | valm1 = (iy == 0) ? 0.0 : data[ngen-4*nx]; |
---|
1576 | valp1 = (iy == ny-1) ? 0.0 : data[ngen+4*nx]; |
---|
1577 | if (valm1 < 0 || valp1 < 0) { |
---|
1578 | data[ngen+2] = 0.0; |
---|
1579 | } else { |
---|
1580 | data[ngen+2] = valp1-valm1; // assume dy=1 |
---|
1581 | //data[ngen+2] = ((valp1-valm1) + 1) * 0.5; // assume dy=1 (ISO) |
---|
1582 | } |
---|
1583 | |
---|
1584 | // gradient in z-direction |
---|
1585 | valm1 = (iz == 0) ? 0.0 : data[ngen-4*nx*ny]; |
---|
1586 | valp1 = (iz == nz-1) ? 0.0 : data[ngen+4*nx*ny]; |
---|
1587 | if (valm1 < 0 || valp1 < 0) { |
---|
1588 | data[ngen+3] = 0.0; |
---|
1589 | } else { |
---|
1590 | data[ngen+3] = valp1-valm1; // assume dz=1 |
---|
1591 | //data[ngen+3] = ((valp1-valm1) + 1) * 0.5; // assume dz=1 (ISO) |
---|
1592 | } |
---|
1593 | |
---|
1594 | ngen += 4; |
---|
1595 | } |
---|
1596 | } |
---|
1597 | } |
---|
1598 | |
---|
1599 | Volume *volPtr; |
---|
1600 | volPtr = NanoVis::load_volume(index, nx, ny, nz, 4, data, |
---|
1601 | field.valueMin(), field.valueMax(), nzero_min); |
---|
1602 | volPtr->xAxis.SetRange(field.rangeMin(Rappture::xaxis), |
---|
1603 | field.rangeMax(Rappture::xaxis)); |
---|
1604 | volPtr->yAxis.SetRange(field.rangeMin(Rappture::yaxis), |
---|
1605 | field.rangeMax(Rappture::yaxis)); |
---|
1606 | volPtr->zAxis.SetRange(field.rangeMin(Rappture::zaxis), |
---|
1607 | field.rangeMax(Rappture::zaxis)); |
---|
1608 | volPtr->wAxis.SetRange(field.valueMin(), field.valueMax()); |
---|
1609 | volPtr->update_pending = true; |
---|
1610 | // TBD.. |
---|
1611 | // POINTSET |
---|
1612 | /* |
---|
1613 | PointSet* pset = new PointSet(); |
---|
1614 | pset->initialize(volume[index], (float*) data); |
---|
1615 | pset->setVisible(true); |
---|
1616 | NanoVis::pointSet.push_back(pset); |
---|
1617 | updateColor(pset); |
---|
1618 | NanoVis::volume[index]->pointsetIndex = NanoVis::pointSet.size() - 1; |
---|
1619 | */ |
---|
1620 | |
---|
1621 | |
---|
1622 | delete [] data; |
---|
1623 | } |
---|
1624 | } else { |
---|
1625 | return result.error("data not found in stream"); |
---|
1626 | } |
---|
1627 | |
---|
1628 | // |
---|
1629 | // Center this new volume on the origin. |
---|
1630 | // |
---|
1631 | float dx0 = -0.5; |
---|
1632 | float dy0 = -0.5*dy/dx; |
---|
1633 | float dz0 = -0.5*dz/dx; |
---|
1634 | NanoVis::volume[index]->move(Vector3(dx0, dy0, dz0)); |
---|
1635 | return result; |
---|
1636 | } |
---|