1 | # -*- mode: tcl; indent-tabs-mode: nil -*- |
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2 | |
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3 | # ---------------------------------------------------------------------- |
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4 | # COMPONENT: mesh - represents a structured mesh for a device |
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5 | # |
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6 | # This object represents a mesh in an XML description of simulator |
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7 | # output. A mesh is a structured arrangement of points, as elements |
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8 | # composed of nodes representing coordinates. This is a little |
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9 | # different from a cloud, which is an unstructured arrangement |
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10 | # (shotgun blast) of points. |
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11 | # ====================================================================== |
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12 | # AUTHOR: Michael McLennan, Purdue University |
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13 | # Copyright (c) 2004-2012 HUBzero Foundation, LLC |
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14 | # |
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15 | # See the file "license.terms" for information on usage and |
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16 | # redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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17 | # ====================================================================== |
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18 | package require Itcl |
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19 | |
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20 | namespace eval Rappture { |
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21 | # forward declaration |
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22 | } |
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23 | |
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24 | itcl::class Rappture::Mesh { |
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25 | private variable _xmlobj "" ; # Ref to XML obj with device data |
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26 | private variable _mesh "" ; # Lib obj representing this mesh |
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27 | private variable _dim 0; # Dimension of mesh (1, 2, or 3) |
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28 | private variable _type ""; # Indicates the type of mesh. |
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29 | private variable _units "m m m" ; # System of units for x, y, z |
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30 | private variable _limits ; # Array of mesh limits. Keys are |
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31 | # xmin, xmax, ymin, ymax, ... |
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32 | private variable _numPoints 0 ; # # of points in mesh |
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33 | private variable _numCells 0 ; # # of cells in mesh |
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34 | private variable _vtkdata ""; # Mesh in vtk file format. |
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35 | constructor {xmlobj path} { |
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36 | # defined below |
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37 | } |
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38 | destructor { |
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39 | # defined below |
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40 | } |
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41 | public method points {} |
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42 | public method elements {} |
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43 | public method mesh {{-type "vtk"}} |
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44 | public method size {{what -points}} |
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45 | public method dimensions {} |
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46 | public method limits {which} |
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47 | public method hints {{key ""}} |
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48 | |
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49 | public proc fetch {xmlobj path} |
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50 | public proc release {obj} |
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51 | public method vtkdata {} |
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52 | public method type {} { |
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53 | return $_type |
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54 | } |
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55 | public method numpoints {} { |
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56 | return $_numPoints |
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57 | } |
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58 | |
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59 | |
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60 | private common _xp2obj ; # used for fetch/release ref counting |
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61 | private common _obj2ref ; # used for fetch/release ref counting |
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62 | private variable _isValid 0 |
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63 | private variable _xv "" |
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64 | private variable _yv "" |
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65 | private variable _zv "" |
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66 | private variable _xCoords ""; # For the blt contour only |
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67 | private variable _yCoords ""; # For the blt contour only |
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68 | |
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69 | private method ReadNodesElements {path} |
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70 | private method GetDimension { path } |
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71 | private method GetDouble { path } |
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72 | private method GetInt { path } |
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73 | private method ReadGrid { path } |
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74 | private method ReadUnstructuredGrid { path } |
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75 | private method ReadVtk { path } |
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76 | private method WriteTriangles { xv yv zv triangles } |
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77 | private method WriteQuads { xv yv zv quads } |
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78 | private method WriteTetrahedrons { xv yv zv tetrahedrons } |
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79 | private method WriteHexahedrons { xv yv zv hexhedrons } |
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80 | private method WriteWedges { xv yv zv wedges } |
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81 | private method WritePyramids { xv yv zv pyramids } |
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82 | private method WriteHybridCells { xv yv zv cells celltypes } |
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83 | private method WritePointCloud { xv yv zv } |
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84 | private method GetCellType { name } |
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85 | private method GetNumIndices { type } |
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86 | } |
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87 | |
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88 | # ---------------------------------------------------------------------- |
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89 | # USAGE: Rappture::Mesh::fetch <xmlobj> <path> |
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90 | # |
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91 | # Clients use this instead of a constructor to fetch the Mesh for |
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92 | # a particular <path> in the <xmlobj>. When the client is done with |
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93 | # the mesh, he calls "release" to decrement the reference count. |
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94 | # When the mesh is no longer needed, it is cleaned up automatically. |
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95 | # ---------------------------------------------------------------------- |
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96 | itcl::body Rappture::Mesh::fetch {xmlobj path} { |
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97 | set handle "$xmlobj|$path" |
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98 | if {[info exists _xp2obj($handle)]} { |
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99 | set obj $_xp2obj($handle) |
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100 | incr _obj2ref($obj) |
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101 | return $obj |
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102 | } |
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103 | set obj [Rappture::Mesh ::#auto $xmlobj $path] |
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104 | set _xp2obj($handle) $obj |
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105 | set _obj2ref($obj) 1 |
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106 | return $obj |
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107 | } |
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108 | |
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109 | # ---------------------------------------------------------------------- |
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110 | # USAGE: Rappture::Mesh::release <obj> |
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111 | # |
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112 | # Clients call this when they're no longer using a Mesh fetched |
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113 | # previously by the "fetch" proc. This decrements the reference |
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114 | # count for the mesh and destroys the object when it is no longer |
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115 | # in use. |
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116 | # ---------------------------------------------------------------------- |
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117 | itcl::body Rappture::Mesh::release {obj} { |
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118 | if {[info exists _obj2ref($obj)]} { |
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119 | incr _obj2ref($obj) -1 |
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120 | if {$_obj2ref($obj) <= 0} { |
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121 | unset _obj2ref($obj) |
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122 | foreach handle [array names _xp2obj] { |
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123 | if {$_xp2obj($handle) == $obj} { |
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124 | unset _xp2obj($handle) |
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125 | } |
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126 | } |
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127 | itcl::delete object $obj |
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128 | } |
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129 | } else { |
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130 | error "can't find reference count for $obj" |
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131 | } |
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132 | } |
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133 | |
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134 | # ---------------------------------------------------------------------- |
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135 | # CONSTRUCTOR |
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136 | # ---------------------------------------------------------------------- |
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137 | itcl::body Rappture::Mesh::constructor {xmlobj path} { |
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138 | package require vtk |
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139 | if {![Rappture::library isvalid $xmlobj]} { |
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140 | error "bad value \"$xmlobj\": should be Rappture::library" |
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141 | } |
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142 | set _xmlobj $xmlobj |
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143 | set _mesh [$xmlobj element -as object $path] |
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144 | |
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145 | # Initialize mesh bounds to empty |
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146 | foreach axis {x y z} { |
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147 | set _limits($axis) "" |
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148 | } |
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149 | set u [$_mesh get units] |
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150 | if {"" != $u} { |
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151 | while {[llength $u] < 3} { |
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152 | lappend u [lindex $u end] |
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153 | } |
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154 | set _units $u |
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155 | } |
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156 | |
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157 | # Meshes comes in a variety of flavors |
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158 | # |
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159 | # Dimensionality is determined from the <dimension> tag. |
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160 | # |
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161 | # <vtk> described mesh |
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162 | # <element> + <node> definitions |
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163 | # <grid> rectangular mesh |
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164 | # <unstructured> homogeneous cell type mesh. |
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165 | |
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166 | # Check that only one mesh type was defined. |
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167 | set subcount 0 |
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168 | foreach cname [$_mesh children] { |
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169 | foreach type { vtk grid unstructured } { |
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170 | if { $cname == $type } { |
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171 | incr subcount |
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172 | break |
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173 | } |
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174 | } |
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175 | } |
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176 | set elemcount 0 |
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177 | foreach cname [$_mesh children] { |
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178 | foreach type { node element } { |
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179 | if { $cname == $type } { |
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180 | incr elemcount |
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181 | break |
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182 | } |
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183 | } |
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184 | } |
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185 | if { $elemcount > 0 } { |
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186 | incr $subcount |
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187 | } |
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188 | if { $subcount > 1 } { |
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189 | puts stderr "too many mesh types specified: picking first found." |
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190 | } |
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191 | if { [$_mesh element "vtk"] != ""} { |
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192 | ReadVtk $path |
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193 | } elseif {[$_mesh element "grid"] != "" } { |
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194 | ReadGrid $path |
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195 | } elseif {[$_mesh element "unstructured"] != "" } { |
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196 | ReadUnstructuredGrid $path |
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197 | } elseif {[$_mesh element "node"] != "" && [$_mesh element "element"]!=""} { |
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198 | ReadNodesElements $path |
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199 | } |
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200 | } |
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201 | |
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202 | # ---------------------------------------------------------------------- |
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203 | # DESTRUCTOR |
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204 | # ---------------------------------------------------------------------- |
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205 | itcl::body Rappture::Mesh::destructor {} { |
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206 | # don't destroy the _xmlobj! we don't own it! |
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207 | itcl::delete object $_mesh |
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208 | |
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209 | if { $_xCoords != "" } { |
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210 | blt::vector destroy $_xCoords |
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211 | } |
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212 | if { $_yCoords != "" } { |
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213 | blt::vector destroy $_yCoords |
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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 | # vtkdata -- |
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219 | # |
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220 | # This is called by the field object to generate a VTK file to send to |
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221 | # the remote render server. Returns the vtkDataSet object containing |
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222 | # (at this point) just the mesh. The field object doesn't know (or |
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223 | # care) what type of mesh is used. The field object will add field |
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224 | # arrays before generating output to send to the remote render server. |
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225 | # |
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226 | itcl::body Rappture::Mesh::vtkdata {} { |
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227 | return $_vtkdata |
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228 | } |
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229 | |
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230 | # ---------------------------------------------------------------------- |
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231 | # USAGE: points |
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232 | # |
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233 | # Returns the vtk object containing the points for this mesh. |
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234 | # ---------------------------------------------------------------------- |
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235 | itcl::body Rappture::Mesh::points {} { |
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236 | return "" |
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237 | } |
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238 | |
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239 | # ---------------------------------------------------------------------- |
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240 | # USAGE: elements |
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241 | # |
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242 | # Returns a list of the form {plist r plist r ...} for each element |
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243 | # in this mesh. Each plist is a list of {x y x y ...} coordinates |
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244 | # for the mesh. |
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245 | # ---------------------------------------------------------------------- |
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246 | itcl::body Rappture::Mesh::elements {} { |
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247 | # build a map for region number => region type |
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248 | foreach comp [$_mesh children -type region] { |
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249 | set id [$_mesh element -as id $comp] |
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250 | set regions($id) [$_mesh get $comp] |
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251 | } |
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252 | set regions() "unknown" |
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253 | |
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254 | set rlist "" |
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255 | foreach comp [$_mesh children -type element] { |
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256 | set rid [$_mesh get $comp.region] |
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257 | |
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258 | # |
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259 | # HACK ALERT! |
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260 | # |
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261 | # Prophet puts out nodes in a funny "Z" shaped order, |
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262 | # not in proper clockwise fashion. Switch the last |
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263 | # two nodes for now to make them correct. |
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264 | # |
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265 | set nlist [$_mesh get $comp.nodes] |
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266 | set n2 [lindex $nlist 2] |
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267 | set n3 [lindex $nlist 3] |
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268 | set nlist [lreplace $nlist 2 3 $n3 $n2] |
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269 | lappend nlist [lindex $nlist 0] |
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270 | |
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271 | set plist "" |
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272 | foreach nid $nlist { |
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273 | eval lappend plist [$_mesh get node($nid)] |
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274 | } |
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275 | lappend rlist $plist $regions($rid) |
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276 | } |
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277 | return $rlist |
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278 | } |
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279 | |
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280 | # ---------------------------------------------------------------------- |
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281 | # USAGE: mesh |
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282 | # |
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283 | # Returns the vtk object representing the mesh. |
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284 | # ---------------------------------------------------------------------- |
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285 | itcl::body Rappture::Mesh::mesh { {type "vtk"} } { |
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286 | switch $type { |
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287 | "vtk" { |
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288 | return "" |
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289 | } |
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290 | default { |
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291 | error "Requested mesh type \"$type\" is unknown." |
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292 | } |
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293 | } |
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294 | } |
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295 | |
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296 | # ---------------------------------------------------------------------- |
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297 | # USAGE: size ?-points|-elements? |
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298 | # |
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299 | # Returns the number of points in this mesh. |
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300 | # ---------------------------------------------------------------------- |
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301 | itcl::body Rappture::Mesh::size {{what -points}} { |
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302 | switch -- $what { |
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303 | -points { |
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304 | return $_numPoints |
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305 | } |
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306 | -elements { |
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307 | return $_numCells |
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308 | } |
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309 | default { |
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310 | error "bad option \"$what\": should be -points or -elements" |
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311 | } |
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312 | } |
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313 | } |
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314 | |
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315 | # ---------------------------------------------------------------------- |
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316 | # USAGE: dimensions |
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317 | # |
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318 | # Returns the number of dimensions for this object: 1, 2, or 3. |
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319 | # ---------------------------------------------------------------------- |
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320 | itcl::body Rappture::Mesh::dimensions {} { |
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321 | return $_dim |
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322 | } |
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323 | |
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324 | # ---------------------------------------------------------------------- |
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325 | # USAGE: limits x|y|z |
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326 | # |
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327 | # Returns the {min max} coords for the limits of the specified axis. |
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328 | # ---------------------------------------------------------------------- |
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329 | itcl::body Rappture::Mesh::limits {axis} { |
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330 | if {![info exists _limits($axis)]} { |
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331 | error "bad axis \"$which\": should be x, y, z" |
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332 | } |
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333 | return $_limits($axis) |
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334 | } |
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335 | |
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336 | # ---------------------------------------------------------------------- |
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337 | # USAGE: hints ?<keyword>? |
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338 | # |
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339 | # Returns a list of key/value pairs for various hints about plotting |
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340 | # this field. If a particular <keyword> is specified, then it returns |
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341 | # the hint for that <keyword>, if it exists. |
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342 | # ---------------------------------------------------------------------- |
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343 | itcl::body Rappture::Mesh::hints {{keyword ""}} { |
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344 | foreach key {label color units} { |
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345 | set str [$_mesh get $key] |
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346 | if {"" != $str} { |
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347 | set hints($key) $str |
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348 | } |
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349 | } |
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350 | |
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351 | if {$keyword != ""} { |
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352 | if {[info exists hints($keyword)]} { |
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353 | return $hints($keyword) |
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354 | } |
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355 | return "" |
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356 | } |
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357 | return [array get hints] |
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358 | } |
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359 | |
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360 | itcl::body Rappture::Mesh::GetDimension { path } { |
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361 | set string [$_xmlobj get $path.dim] |
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362 | if { $string == "" } { |
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363 | error "no tag <dim> found in mesh." |
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364 | } |
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365 | if { [scan $string "%d" _dim] == 1 } { |
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366 | if { $_dim == 2 || $_dim == 3 } { |
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367 | return $_dim |
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368 | } |
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369 | } |
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370 | error "bad <dim> tag value \"$string\": should be 2 or 3." |
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371 | } |
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372 | |
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373 | itcl::body Rappture::Mesh::GetDouble { path } { |
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374 | set string [$_xmlobj get $path] |
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375 | if { [scan $string "%g" value] != 1 } { |
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376 | puts stderr "can't get double value \"$string\" of \"$path\"" |
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377 | return 0.0 |
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378 | } |
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379 | return $value |
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380 | } |
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381 | |
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382 | itcl::body Rappture::Mesh::GetInt { path } { |
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383 | set string [$_xmlobj get $path] |
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384 | if { [scan $string "%d" value] != 1 } { |
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385 | puts stderr "can't get integer value \"$string\" of \"$path\"" |
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386 | return 0.0 |
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387 | } |
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388 | return $value |
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389 | } |
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390 | |
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391 | |
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392 | itcl::body Rappture::Mesh::ReadVtk { path } { |
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393 | set _type "vtk" |
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394 | |
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395 | GetDimension $path |
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396 | # Create a VTK file with the mesh in it. |
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397 | set _vtkdata [$_xmlobj get $path.vtk] |
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398 | append out "# vtk DataFile Version 3.0\n" |
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399 | append out "mesh\n" |
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400 | append out "ASCII\n" |
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401 | append out "$_vtkdata\n" |
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402 | |
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403 | # Write the contents to a file just in case it's binary. |
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404 | set tmpfile file[pid].vtk |
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405 | set f [open "$tmpfile" "w"] |
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406 | fconfigure $f -translation binary -encoding binary |
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407 | puts $f $out |
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408 | close $f |
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409 | |
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410 | # Read the data back into a vtk dataset and query the bounds. |
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411 | set reader $this-datasetreader |
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412 | vtkDataSetReader $reader |
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413 | $reader SetFileName $tmpfile |
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414 | $reader Update |
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415 | set output [$reader GetOutput] |
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416 | foreach { xmin xmax ymin ymax zmin zmax } [$output GetBounds] break |
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417 | set _limits(x) [list $xmin $xmax] |
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418 | set _limits(y) [list $ymin $ymax] |
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419 | set _limits(z) [list $zmin $zmax] |
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420 | file delete $tmpfile |
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421 | rename $output "" |
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422 | rename $reader "" |
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423 | set _isValid 1 |
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424 | } |
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425 | |
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426 | itcl::body Rappture::Mesh::ReadGrid { path } { |
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427 | set _type "grid" |
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428 | |
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429 | GetDimension $path |
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430 | set numUniform 0 |
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431 | set numRectilinear 0 |
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432 | set numCurvilinear 0 |
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433 | foreach axis { x y z } { |
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434 | set min [$_xmlobj get "$path.grid.${axis}axis.min"] |
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435 | set max [$_xmlobj get "$path.grid.${axis}axis.max"] |
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436 | set num [$_xmlobj get "$path.grid.${axis}axis.numpoints"] |
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437 | set coords [$_xmlobj get "$path.grid.${axis}coords"] |
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438 | set dim [$_xmlobj get "$path.grid.${axis}dim"] |
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439 | if { $min != "" && $max != "" && $num != "" && $num > 0 } { |
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440 | set ${axis}Min $min |
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441 | set ${axis}Max $max |
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442 | set ${axis}Num $num |
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443 | incr numUniform |
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444 | } elseif { $coords != "" } { |
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445 | incr numRectilinear |
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446 | set ${axis}Coords $coords |
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447 | } elseif { $dim != "" } { |
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448 | set ${axis}Num $dim |
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449 | incr numCurvilinear |
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450 | } |
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451 | } |
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452 | set _dim [expr $numRectilinear + $numUniform + $numCurvilinear] |
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453 | if { $_dim == 0 } { |
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454 | # No data found. |
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455 | puts stderr "no relevant subelements found in <mesh><grid>" |
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456 | return 0 |
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457 | } |
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458 | if { $numCurvilinear > 0 } { |
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459 | # This is the 2D/3D curilinear case. We found <xdim>, <ydim>, or <zdim> |
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460 | if { $numRectilinear > 0 || $numUniform > 0 } { |
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461 | error "can't mix curvilinear and rectilinear grids." |
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462 | } |
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463 | if { $numCurvilinear < 2 } { |
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464 | error "curvilinear grid must be 2D or 3D." |
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465 | } |
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466 | set points [$_xmlobj get $path.grid.points] |
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467 | if { $points == "" } { |
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468 | error "missing <points> from grid description." |
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469 | } |
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470 | if { ![info exists xNum] || ![info exists yNum] } { |
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471 | error "invalid dimensions for curvilinear grid: missing <xdim> or <ydim> from grid description." |
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472 | } |
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473 | set all [blt::vector create \#auto] |
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474 | set xv [blt::vector create \#auto] |
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475 | set yv [blt::vector create \#auto] |
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476 | set zv [blt::vector create \#auto] |
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477 | $all set $points |
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478 | set numCoords [$all length] |
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479 | if { [info exists zNum] } { |
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480 | set _dim 3 |
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481 | set _numPoints [expr $xNum * $yNum * $zNum] |
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482 | $all set $points |
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483 | if { ($_numPoints*3) != $numCoords } { |
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484 | error "invalid grid: \# of points does not match dimensions <xdim> * <ydim>" |
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485 | } |
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486 | if { ($numCoords % 3) != 0 } { |
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487 | error "wrong \# of coordinates for 3D grid" |
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488 | } |
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489 | $all split $xv $yv $zv |
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490 | foreach axis {x y z} { |
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491 | set vector [set ${axis}v] |
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492 | set _limits($axis) [$vector limits] |
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493 | } |
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494 | append out "DATASET STRUCTURED_GRID\n" |
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495 | append out "DIMENSIONS $xNum $yNum $zNum\n" |
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496 | append out "POINTS $_numPoints double\n" |
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497 | append out [$all range 0 end] |
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498 | append out "\n" |
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499 | set _vtkdata $out |
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500 | } else { |
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501 | set _dim 2 |
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502 | set _numPoints [expr $xNum * $yNum] |
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503 | if { ($_numPoints*2) != $numCoords } { |
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504 | error "invalid grid: \# of points does not match dimensions <xdim> * <ydim> * <zdim>" |
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505 | } |
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506 | if { ($numCoords % 2) != 0 } { |
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507 | error "wrong \# of coordinates for 2D grid" |
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508 | } |
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509 | foreach axis {x y} { |
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510 | set vector [set ${axis}v] |
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511 | set _limits($axis) [$vector limits] |
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512 | } |
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513 | $zv seq 0 0 [$xv length] |
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514 | $all merge $xv $yv $zv |
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515 | append out "DATASET STRUCTURED_GRID\n" |
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516 | append out "DIMENSIONS $xNum $yNum 1\n" |
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517 | append out "POINTS $_numPoints double\n" |
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518 | append out [$all range 0 end] |
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519 | append out "\n" |
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520 | set _vtkdata $out |
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521 | } |
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522 | blt::vector destroy $all $xv $yv $zv |
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523 | set _isValid 1 |
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524 | return 1 |
---|
525 | } |
---|
526 | if { $numRectilinear == 0 && $numUniform > 0} { |
---|
527 | # This is the special case where all axes 2D/3D are uniform. |
---|
528 | # This results in a STRUCTURE_POINTS |
---|
529 | if { $_dim == 2 } { |
---|
530 | set xSpace [expr ($xMax - $xMin) / double($xNum - 1)] |
---|
531 | set ySpace [expr ($yMax - $yMin) / double($yNum - 1)] |
---|
532 | set _numPoints [expr $xNum * $yNum] |
---|
533 | append out "DATASET STRUCTURED_POINTS\n" |
---|
534 | append out "DIMENSIONS $xNum $yNum 1\n" |
---|
535 | append out "SPACING $xSpace $ySpace 0\n" |
---|
536 | append out "ORIGIN 0 0 0\n" |
---|
537 | set _vtkdata $out |
---|
538 | foreach axis {x y} { |
---|
539 | set _limits($axis) [list [set ${axis}Min] [set ${axis}Max]] |
---|
540 | } |
---|
541 | } elseif { $_dim == 3 } { |
---|
542 | set xSpace [expr ($xMax - $xMin) / double($xNum - 1)] |
---|
543 | set ySpace [expr ($yMax - $yMin) / double($yNum - 1)] |
---|
544 | set zSpace [expr ($zMax - $zMin) / double($zNum - 1)] |
---|
545 | set _numPoints [expr $xNum * $yNum * zNum] |
---|
546 | append out "DATASET STRUCTURED_POINTS\n" |
---|
547 | append out "DIMENSIONS $xNum $yNum $zNum\n" |
---|
548 | append out "SPACING $xSpace $ySpace $zSpace\n" |
---|
549 | append out "ORIGIN 0 0 0\n" |
---|
550 | set _vtkdata $out |
---|
551 | foreach axis {x y z} { |
---|
552 | set _limits($axis) [list [set ${axis}Min] [set ${axis}Max]] |
---|
553 | } |
---|
554 | } else { |
---|
555 | error "bad dimension of mesh \"$_dim\"" |
---|
556 | } |
---|
557 | set _isValid 1 |
---|
558 | return 1 |
---|
559 | } |
---|
560 | # This is the hybrid case. Some axes are uniform, others are nonuniform. |
---|
561 | set xv [blt::vector create \#auto] |
---|
562 | if { [info exists xMin] } { |
---|
563 | $xv seq $xMin $xMax $xNum |
---|
564 | } else { |
---|
565 | $xv set [$_xmlobj get $path.grid.xcoords] |
---|
566 | set xMin [$xv min] |
---|
567 | set xMax [$xv max] |
---|
568 | set xNum [$xv length] |
---|
569 | } |
---|
570 | set yv [blt::vector create \#auto] |
---|
571 | if { [info exists yMin] } { |
---|
572 | $yv seq $yMin $yMax $yNum |
---|
573 | } else { |
---|
574 | $yv set [$_xmlobj get $path.grid.ycoords] |
---|
575 | set yMin [$yv min] |
---|
576 | set yMax [$yv max] |
---|
577 | set yNum [$yv length] |
---|
578 | } |
---|
579 | set zv [blt::vector create \#auto] |
---|
580 | if { $_dim == 3 } { |
---|
581 | if { [info exists zMin] } { |
---|
582 | $zv seq $zMin $zMax $zNum |
---|
583 | } else { |
---|
584 | $zv set [$_xmlobj get $path.grid.zcoords] |
---|
585 | set zMin [$zv min] |
---|
586 | set zMax [$zv max] |
---|
587 | set zNum [$zv length] |
---|
588 | } |
---|
589 | } else { |
---|
590 | set zNum 1 |
---|
591 | } |
---|
592 | if { $_dim == 3 } { |
---|
593 | set _numPoints [expr $xNum * $yNum * $zNum] |
---|
594 | append out "DATASET RECTILINEAR_GRID\n" |
---|
595 | append out "DIMENSIONS $xNum $yNum $zNum\n" |
---|
596 | append out "X_COORDINATES $xNum double\n" |
---|
597 | append out [$xv range 0 end] |
---|
598 | append out "\n" |
---|
599 | append out "Y_COORDINATES $yNum double\n" |
---|
600 | append out [$yv range 0 end] |
---|
601 | append out "\n" |
---|
602 | append out "Z_COORDINATES $zNum double\n" |
---|
603 | append out [$zv range 0 end] |
---|
604 | append out "\n" |
---|
605 | set _vtkdata $out |
---|
606 | foreach axis {x y z} { |
---|
607 | if { [info exists ${axis}Min] } { |
---|
608 | set _limits($axis) [list [set ${axis}Min] [set ${axis}Max]] |
---|
609 | } |
---|
610 | } |
---|
611 | } elseif { $_dim == 2 } { |
---|
612 | set _numPoints [expr $xNum * $yNum] |
---|
613 | append out "DATASET RECTILINEAR_GRID\n" |
---|
614 | append out "DIMENSIONS $xNum $yNum 1\n" |
---|
615 | append out "X_COORDINATES $xNum double\n" |
---|
616 | append out [$xv range 0 end] |
---|
617 | append out "\n" |
---|
618 | append out "Y_COORDINATES $yNum double\n" |
---|
619 | append out [$yv range 0 end] |
---|
620 | append out "\n" |
---|
621 | append out "Z_COORDINATES 1 double\n" |
---|
622 | append out "0\n" |
---|
623 | foreach axis {x y} { |
---|
624 | if { [info exists ${axis}Min] } { |
---|
625 | set _limits($axis) [list [set ${axis}Min] [set ${axis}Max]] |
---|
626 | } |
---|
627 | } |
---|
628 | set _vtkdata $out |
---|
629 | } else { |
---|
630 | error "invalid dimension of grid \"$_dim\"" |
---|
631 | } |
---|
632 | blt::vector destroy $xv $yv $zv |
---|
633 | set _isValid 1 |
---|
634 | return 1 |
---|
635 | } |
---|
636 | |
---|
637 | itcl::body Rappture::Mesh::WritePointCloud { xv yv zv } { |
---|
638 | set _type "cloud" |
---|
639 | set _numPoints [$xv length] |
---|
640 | append out "DATASET POLYDATA\n" |
---|
641 | append out "POINTS $_numPoints double\n" |
---|
642 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
643 | append out "$x $y $z\n" |
---|
644 | } |
---|
645 | set _vtkdata $out |
---|
646 | set _limits(x) [$xv limits] |
---|
647 | set _limits(y) [$yv limits] |
---|
648 | if { $_dim == 3 } { |
---|
649 | set _limits(z) [$zv limits] |
---|
650 | } |
---|
651 | } |
---|
652 | |
---|
653 | itcl::body Rappture::Mesh::WriteTriangles { xv yv zv triangles } { |
---|
654 | set _type "triangles" |
---|
655 | if { $triangles == "" } { |
---|
656 | puts stderr "no triangle indices specified in mesh" |
---|
657 | return 0 |
---|
658 | } |
---|
659 | set _numPoints [$xv length] |
---|
660 | set count 0 |
---|
661 | set data {} |
---|
662 | set celltypes {} |
---|
663 | foreach { a b c } $triangles { |
---|
664 | append data " 3 $a $b $c\n" |
---|
665 | append celltypes "5\n" |
---|
666 | incr count |
---|
667 | } |
---|
668 | append out "DATASET UNSTRUCTURED_GRID\n" |
---|
669 | append out "POINTS $_numPoints double\n" |
---|
670 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
671 | append out " $x $y $z\n" |
---|
672 | } |
---|
673 | append out "CELLS $count [expr $count * 4]\n" |
---|
674 | append out $data |
---|
675 | append out "CELL_TYPES $count\n" |
---|
676 | append out $celltypes |
---|
677 | set _limits(x) [$xv limits] |
---|
678 | set _limits(y) [$yv limits] |
---|
679 | if { $_dim == 3 } { |
---|
680 | set _limits(z) [$zv limits] |
---|
681 | } |
---|
682 | set _vtkdata $out |
---|
683 | set _isValid 1 |
---|
684 | } |
---|
685 | |
---|
686 | itcl::body Rappture::Mesh::WriteQuads { xv yv zv quads } { |
---|
687 | set _type "quads" |
---|
688 | if { $quads == "" } { |
---|
689 | puts stderr "no <quads> indices specified in mesh" |
---|
690 | return 0 |
---|
691 | } |
---|
692 | set _numPoints [$xv length] |
---|
693 | set count 0 |
---|
694 | set data {} |
---|
695 | set celltypes {} |
---|
696 | foreach { a b c d } $quads { |
---|
697 | append data " 4 $a $b $c $d\n" |
---|
698 | append celltypes "9\n" |
---|
699 | incr count |
---|
700 | } |
---|
701 | append out "DATASET UNSTRUCTURED_GRID\n" |
---|
702 | append out "POINTS $_numPoints double\n" |
---|
703 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
704 | append out " $x $y $z\n" |
---|
705 | } |
---|
706 | append out "CELLS $count [expr $count * 5]\n" |
---|
707 | append out $data |
---|
708 | append out "CELL_TYPES $count\n" |
---|
709 | append out $celltypes |
---|
710 | set _limits(x) [$xv limits] |
---|
711 | set _limits(y) [$yv limits] |
---|
712 | if { $_dim == 3 } { |
---|
713 | set _limits(z) [$zv limits] |
---|
714 | } |
---|
715 | set _vtkdata $out |
---|
716 | set _isValid 1 |
---|
717 | } |
---|
718 | |
---|
719 | itcl::body Rappture::Mesh::WriteTetrahedrons { xv yv zv tetras } { |
---|
720 | set _type "tetrahedrons" |
---|
721 | if { $tetras == "" } { |
---|
722 | puts stderr "no <tetrahederons> indices specified in mesh" |
---|
723 | return 0 |
---|
724 | } |
---|
725 | set _numPoints [$xv length] |
---|
726 | set count 0 |
---|
727 | set data {} |
---|
728 | set celltypes {} |
---|
729 | foreach { a b c d } $tetras { |
---|
730 | append data " 4 $a $b $c $d\n" |
---|
731 | append celltypes "10\n" |
---|
732 | incr count |
---|
733 | } |
---|
734 | append out "DATASET UNSTRUCTURED_GRID\n" |
---|
735 | append out "POINTS $_numPoints double\n" |
---|
736 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
737 | append out " $x $y $z\n" |
---|
738 | } |
---|
739 | append out "CELLS $count [expr $count * 5]\n" |
---|
740 | append out $data |
---|
741 | append out "CELL_TYPES $count\n" |
---|
742 | append out $celltypes |
---|
743 | set _limits(x) [$xv limits] |
---|
744 | set _limits(y) [$yv limits] |
---|
745 | if { $_dim == 3 } { |
---|
746 | set _limits(z) [$zv limits] |
---|
747 | } |
---|
748 | set _vtkdata $out |
---|
749 | set _isValid 1 |
---|
750 | } |
---|
751 | |
---|
752 | itcl::body Rappture::Mesh::WriteHexahedrons { xv yv zv hexas } { |
---|
753 | set _type "hexahedrons" |
---|
754 | if { $hexas == "" } { |
---|
755 | puts stderr "no <hexahederons> indices specified in mesh" |
---|
756 | return 0 |
---|
757 | } |
---|
758 | set _numPoints [$xv length] |
---|
759 | set count 0 |
---|
760 | set data {} |
---|
761 | set celltypes {} |
---|
762 | foreach { a b c d e f g h } $hexas { |
---|
763 | append data " 8 $a $b $c $d $e $f $g $h\n" |
---|
764 | append celltypes "12\n" |
---|
765 | incr count |
---|
766 | } |
---|
767 | append out "DATASET UNSTRUCTURED_GRID\n" |
---|
768 | append out "POINTS $_numPoints double\n" |
---|
769 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
770 | append out " $x $y $z\n" |
---|
771 | } |
---|
772 | append out "CELLS $count [expr $count * 9]\n" |
---|
773 | append out $data |
---|
774 | append out "CELL_TYPES $count\n" |
---|
775 | append out $celltypes |
---|
776 | set _limits(x) [$xv limits] |
---|
777 | set _limits(y) [$yv limits] |
---|
778 | if { $_dim == 3 } { |
---|
779 | set _limits(z) [$zv limits] |
---|
780 | } |
---|
781 | set _vtkdata $out |
---|
782 | set _isValid 1 |
---|
783 | } |
---|
784 | |
---|
785 | itcl::body Rappture::Mesh::WriteWedges { xv yv zv wedges } { |
---|
786 | set _type "wedges" |
---|
787 | if { $wedges == "" } { |
---|
788 | puts stderr "no <wedges> indices specified in mesh" |
---|
789 | return 0 |
---|
790 | } |
---|
791 | set _numPoints [$xv length] |
---|
792 | set count 0 |
---|
793 | set data {} |
---|
794 | set celltypes {} |
---|
795 | foreach { a b c d e f } $wedges { |
---|
796 | append data " 6 $a $b $c $d $e $f\n" |
---|
797 | append celltypes "13\n" |
---|
798 | incr count |
---|
799 | } |
---|
800 | append out "DATASET UNSTRUCTURED_GRID\n" |
---|
801 | append out "POINTS $_numPoints double\n" |
---|
802 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
803 | append out " $x $y $z\n" |
---|
804 | } |
---|
805 | append out "CELLS $count [expr $count * 7]\n" |
---|
806 | append out $data |
---|
807 | append out "CELL_TYPES $count\n" |
---|
808 | append out $celltypes |
---|
809 | set _limits(x) [$xv limits] |
---|
810 | set _limits(y) [$yv limits] |
---|
811 | if { $_dim == 3 } { |
---|
812 | set _limits(z) [$zv limits] |
---|
813 | } |
---|
814 | set _vtkdata $out |
---|
815 | set _isValid 1 |
---|
816 | } |
---|
817 | |
---|
818 | itcl::body Rappture::Mesh::WritePyramids { xv yv zv pyramids } { |
---|
819 | set _type "pyramids" |
---|
820 | if { $pyramids == "" } { |
---|
821 | puts stderr "no <pyramids> indices specified in mesh" |
---|
822 | return 0 |
---|
823 | } |
---|
824 | set _numPoints [$xv length] |
---|
825 | set count 0 |
---|
826 | set data {} |
---|
827 | set celltypes {} |
---|
828 | foreach { a b c d e } $pyramids { |
---|
829 | append data " 5 $a $b $c $d $e\n" |
---|
830 | append celltypes "14\n" |
---|
831 | incr count |
---|
832 | } |
---|
833 | append out "DATASET UNSTRUCTURED_GRID\n" |
---|
834 | append out "POINTS $_numPoints double\n" |
---|
835 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
836 | append out " $x $y $z\n" |
---|
837 | } |
---|
838 | append out "CELLS $count [expr $count * 6]\n" |
---|
839 | append out $data |
---|
840 | append out "CELL_TYPES $count\n" |
---|
841 | append out $celltypes |
---|
842 | set _limits(x) [$xv limits] |
---|
843 | set _limits(y) [$yv limits] |
---|
844 | if { $_dim == 3 } { |
---|
845 | set _limits(z) [$zv limits] |
---|
846 | } |
---|
847 | set _vtkdata $out |
---|
848 | set _isValid 1 |
---|
849 | } |
---|
850 | |
---|
851 | itcl::body Rappture::Mesh::WriteHybridCells { xv yv zv cells celltypes } { |
---|
852 | set _type "unstructured" |
---|
853 | if { $cells == "" } { |
---|
854 | puts stderr "no <cells> description found for <unstructured>." |
---|
855 | return 0 |
---|
856 | } |
---|
857 | set lines [split $cells \n] |
---|
858 | set numCellTypes [llength $celltypes] |
---|
859 | if { $numCellTypes == 1 } { |
---|
860 | set celltype [GetCellType $celltypes] |
---|
861 | } |
---|
862 | if { $_dim == 2 } { |
---|
863 | set _numPoints [$xv length] |
---|
864 | set data {} |
---|
865 | set count 0 |
---|
866 | set _numCells 0 |
---|
867 | set celltypes {} |
---|
868 | foreach line $lines { |
---|
869 | set length [llength $line] |
---|
870 | if { $length == 0 } { |
---|
871 | continue |
---|
872 | } |
---|
873 | if { $numCellTypes > 1 } { |
---|
874 | set cellType [GetCellType [lindex $cellTypes $_numCells]] |
---|
875 | } |
---|
876 | set numIndices [GetNumIndices $celltype] |
---|
877 | if { $numIndices > 0 && $numIndices != $length } { |
---|
878 | error "wrong \# of indices specified for celltype $celltype on line \"$line\"" |
---|
879 | } |
---|
880 | append data " $numIndices $line\n" |
---|
881 | lappend celltypes $celltype |
---|
882 | incr count $length; # Include the indices |
---|
883 | incr count; # and the number of indices |
---|
884 | incr _numCells |
---|
885 | } |
---|
886 | append out "DATASET UNSTRUCTURED_GRID\n" |
---|
887 | append out "POINTS $_numPoints double\n" |
---|
888 | set all [blt::vector create \#auto] |
---|
889 | $all merge $xv $yv $zv |
---|
890 | append out [$all range 0 end] |
---|
891 | blt::vector destroy $all |
---|
892 | append out "CELLS $_numCells $count\n" |
---|
893 | append out $data |
---|
894 | append out "CELL_TYPES $_numCells\n" |
---|
895 | append out $celltypes |
---|
896 | set _limits(x) [$xv limits] |
---|
897 | set _limits(y) [$yv limits] |
---|
898 | } else { |
---|
899 | set _numPoints [$xv length] |
---|
900 | |
---|
901 | set data {} |
---|
902 | set count 0 |
---|
903 | set _numCells 0 |
---|
904 | foreach line $lines { |
---|
905 | set length [llength $line] |
---|
906 | if { $length == 0 } { |
---|
907 | continue |
---|
908 | } |
---|
909 | if { $numCellTypes > 1 } { |
---|
910 | set cellType [GetCellType [lindex $cellTypes $_numCells]] |
---|
911 | } |
---|
912 | set numIndices [GetNumIndices $celltype] |
---|
913 | if { $numIndices > 0 && $numIndices != $length } { |
---|
914 | error "wrong \# of indices specified for celltype $celltype on line \"$line\"" |
---|
915 | } |
---|
916 | append data " $length $line\n" |
---|
917 | incr count $length |
---|
918 | incr count |
---|
919 | incr _numCells |
---|
920 | } |
---|
921 | append out "DATASET UNSTRUCTURED_GRID\n" |
---|
922 | append out "POINTS $_numPoints double\n" |
---|
923 | set all [blt::vector create \#auto] |
---|
924 | $all merge $xv $yv $zv |
---|
925 | append out [$all range 0 end] |
---|
926 | blt::vector destroy $all |
---|
927 | append out "\n" |
---|
928 | append out "CELLS $_numCells $count\n" |
---|
929 | append out $data |
---|
930 | append out "CELL_TYPES $_numCells\n" |
---|
931 | append out $celltypes |
---|
932 | set _limits(x) [$xv limits] |
---|
933 | set _limits(y) [$yv limits] |
---|
934 | set _limits(z) [$zv limits] |
---|
935 | } |
---|
936 | set _vtkdata $out |
---|
937 | set _isValid 1 |
---|
938 | } |
---|
939 | |
---|
940 | itcl::body Rappture::Mesh::ReadUnstructuredGrid { path } { |
---|
941 | set _type "unstructured" |
---|
942 | |
---|
943 | GetDimension $path |
---|
944 | # Step 1: Verify that there's only one cell tag of any kind. |
---|
945 | set numCells 0 |
---|
946 | foreach type { cells triangles quads tetrahedrons |
---|
947 | hexahedrons wedges pyramids } { |
---|
948 | set data [$_xmlobj get $path.unstructured.$type] |
---|
949 | if { $data != "" } { |
---|
950 | puts stderr "found type $type" |
---|
951 | incr numCells |
---|
952 | } |
---|
953 | } |
---|
954 | # The generic <cells> tag requires there be a <celltypes> tag too. |
---|
955 | set celltypes [$_xmlobj get $path.unstructured.celltypes] |
---|
956 | if { $numCells == 0 && $celltypes != "" } { |
---|
957 | error "no <cells> description found for <unstructured>." |
---|
958 | } |
---|
959 | if { $numCells > 1 } { |
---|
960 | error "too many <cells>, <triangles>, <quads>... descriptions found: should be only one." |
---|
961 | } |
---|
962 | foreach type { cells triangles quads tetrahedrons |
---|
963 | hexahedrons wedges pyramids } { |
---|
964 | set data [$_xmlobj get $path.unstructured.$type] |
---|
965 | if { $data != "" } { |
---|
966 | break |
---|
967 | } |
---|
968 | } |
---|
969 | # Step 2: Allow points to be specified as <points> or |
---|
970 | # <xcoords>, <ycoords>, <zcoords>. Split and convert into |
---|
971 | # 3 vectors, one for each coordinate. |
---|
972 | if { $_dim == 2 } { |
---|
973 | set xcoords [$_xmlobj get $path.unstructured.xcoords] |
---|
974 | set ycoords [$_xmlobj get $path.unstructured.ycoords] |
---|
975 | set zcoords [$_xmlobj get $path.unstructured.zcoords] |
---|
976 | set data [$_xmlobj get $path.unstructured.points] |
---|
977 | if { $zcoords != "" } { |
---|
978 | error "can't specify <zcoords> with a 2D mesh" |
---|
979 | } |
---|
980 | if { $xcoords != "" && $ycoords != "" } { |
---|
981 | set all [blt::vector create \#auto] |
---|
982 | set xv [blt::vector create \#auto] |
---|
983 | set yv [blt::vector create \#auto] |
---|
984 | $xv set $xcoords |
---|
985 | $yv set $ycoords |
---|
986 | } elseif { $data != "" } { |
---|
987 | Rappture::ReadPoints $data dim points |
---|
988 | if { $points == "" } { |
---|
989 | error "no <points> found for unstructured grid" |
---|
990 | } |
---|
991 | if { $dim != 2 } { |
---|
992 | error "\# of coordinates per point is \"$dim\": does not agree with dimension specified for mesh \"$_dim\"" |
---|
993 | } |
---|
994 | set all [blt::vector create \#auto] |
---|
995 | set xv [blt::vector create \#auto] |
---|
996 | set yv [blt::vector create \#auto] |
---|
997 | $all set $points |
---|
998 | $all split $xv $yv |
---|
999 | blt::vector destroy $all |
---|
1000 | } else { |
---|
1001 | error "no points specified for unstructured grid" |
---|
1002 | } |
---|
1003 | set zv [blt::vector create \#auto] |
---|
1004 | $zv seq 0 0 [$xv length]; # Make an all zeroes vector. |
---|
1005 | } elseif { $_dim == 3 } { |
---|
1006 | set xcoords [$_xmlobj get $path.unstructured.xcoords] |
---|
1007 | set ycoords [$_xmlobj get $path.unstructured.ycoords] |
---|
1008 | set zcoords [$_xmlobj get $path.unstructured.zcoords] |
---|
1009 | set data [$_xmlobj get $path.unstructured.points] |
---|
1010 | if { $xcoords != "" && $ycoords != "" && $zcoords != "" } { |
---|
1011 | set xv [blt::vector create \#auto] |
---|
1012 | set yv [blt::vector create \#auto] |
---|
1013 | set zv [blt::vector create \#auto] |
---|
1014 | $xv set $xcoords |
---|
1015 | $yv set $ycoords |
---|
1016 | $zv set $zcoords |
---|
1017 | } elseif { $data != "" } { |
---|
1018 | Rappture::ReadPoints $data dim points |
---|
1019 | if { $points == "" } { |
---|
1020 | error "no <points> found for <cells> mesh" |
---|
1021 | } |
---|
1022 | if { $dim != 3 } { |
---|
1023 | error "\# of coordinates per point is \"$dim\": does not agree with dimension specified for mesh \"$_dim\"" |
---|
1024 | } |
---|
1025 | set xv [blt::vector create \#auto] |
---|
1026 | set yv [blt::vector create \#auto] |
---|
1027 | set zv [blt::vector create \#auto] |
---|
1028 | $all set $points |
---|
1029 | $all split $xv $yv $zv |
---|
1030 | blt::vector destroy $all |
---|
1031 | } else { |
---|
1032 | error "no points specified for unstructured grid" |
---|
1033 | } |
---|
1034 | } |
---|
1035 | # Step 3: Write the points and cells as vtk data. |
---|
1036 | if { $numCells == 0 } { |
---|
1037 | WritePointCloud $xv $yv $zv |
---|
1038 | } elseif { $type == "cells" } { |
---|
1039 | set cells [$_xmlobj get $path.unstructured.cells] |
---|
1040 | WriteHybridCells $xv $yv $zv $cells $celltypes |
---|
1041 | } else { |
---|
1042 | set cmd "Write[string totitle $type]" |
---|
1043 | set cells [$_xmlobj get $path.unstructured.$type] |
---|
1044 | $cmd $xv $yv $zv $cells |
---|
1045 | } |
---|
1046 | # Clean up. |
---|
1047 | blt::vector destroy $xv $yv $zv |
---|
1048 | } |
---|
1049 | |
---|
1050 | # ---------------------------------------------------------------------- |
---|
1051 | # USAGE: ReadNodesElements <path> |
---|
1052 | # |
---|
1053 | # Used internally to build a mesh representation based on nodes and |
---|
1054 | # elements stored in the XML. |
---|
1055 | # ---------------------------------------------------------------------- |
---|
1056 | itcl::body Rappture::Mesh::ReadNodesElements {path} { |
---|
1057 | set type "nodeselements" |
---|
1058 | set count 0 |
---|
1059 | |
---|
1060 | # Scan for nodes. Each node represents a vertex. |
---|
1061 | set data {} |
---|
1062 | foreach cname [$_xmlobj children -type node $path] { |
---|
1063 | append data "[$_xmlobj get $path.$cname]\n" |
---|
1064 | } |
---|
1065 | Rappture::ReadPoints $data _dim points |
---|
1066 | if { $_dim == 2 } { |
---|
1067 | set all [blt::vector create \#auto] |
---|
1068 | set xv [blt::vector create \#auto] |
---|
1069 | set yv [blt::vector create \#auto] |
---|
1070 | set zv [blt::vector create \#auto] |
---|
1071 | $all set $points |
---|
1072 | $all split $xv $yv |
---|
1073 | set _numPoints [$xv length] |
---|
1074 | set _limits(x) [$xv limits] |
---|
1075 | set _limits(y) [$yv limits] |
---|
1076 | # 2D Dataset. All Z coordinates are 0 |
---|
1077 | $zv seq 0.0 0.0 $_numPoints |
---|
1078 | $all merge $xv $yv $zv |
---|
1079 | set points [$all range 0 end] |
---|
1080 | blt::vector destroy $all $xv $yv $zv |
---|
1081 | } elseif { $_dim == 3 } { |
---|
1082 | set all [blt::vector create \#auto] |
---|
1083 | set xv [blt::vector create \#auto] |
---|
1084 | set yv [blt::vector create \#auto] |
---|
1085 | set zv [blt::vector create \#auto] |
---|
1086 | $all set $points |
---|
1087 | $all split $xv $yv $zv |
---|
1088 | set _numPoints [$xv length] |
---|
1089 | set _limits(x) [$xv limits] |
---|
1090 | set _limits(y) [$yv limits] |
---|
1091 | set _limits(z) [$zv limits] |
---|
1092 | set points [$all range 0 end] |
---|
1093 | blt::vector destroy $all $xv $yv $zv |
---|
1094 | } else { |
---|
1095 | error "bad dimension \"$_dim\" for nodes mesh" |
---|
1096 | } |
---|
1097 | array set node2celltype { |
---|
1098 | 3 5 |
---|
1099 | 4 10 |
---|
1100 | 8 11 |
---|
1101 | 6 13 |
---|
1102 | 5 14 |
---|
1103 | } |
---|
1104 | set count 0 |
---|
1105 | set _numCells 0 |
---|
1106 | set celltypes {} |
---|
1107 | set data {} |
---|
1108 | # Next scan for elements. Each element represents a cell. |
---|
1109 | foreach cname [$_xmlobj children -type element $path] { |
---|
1110 | set nodeList [$_mesh get $cname.nodes] |
---|
1111 | set numNodes [llength $nodeList] |
---|
1112 | if { ![info exists node2celltype($numNodes)] } { |
---|
1113 | puts stderr "unknown number of indices \"$_numNodes\": should be 3, 4, 5, 6, or 8" |
---|
1114 | return 0 |
---|
1115 | } |
---|
1116 | set celltype $node2celltype($numNodes) |
---|
1117 | append celltypes " $celltype\n" |
---|
1118 | append data " $numNodes $nodeList\n" |
---|
1119 | incr _numCells |
---|
1120 | incr count $numNodes |
---|
1121 | incr count; # One extra for the VTK celltype id. |
---|
1122 | } |
---|
1123 | |
---|
1124 | append out "DATASET UNSTRUCTURED_GRID\n" |
---|
1125 | append out "POINTS $_numPoints double\n" |
---|
1126 | append out $points |
---|
1127 | append out "\n" |
---|
1128 | append out "CELLS $_numCells $count\n" |
---|
1129 | append out $data |
---|
1130 | append out "CELL_TYPES $_numCells\n" |
---|
1131 | append out $celltypes |
---|
1132 | append out "\n" |
---|
1133 | set _vtkdata $out |
---|
1134 | set _isValid 1 |
---|
1135 | } |
---|
1136 | |
---|
1137 | itcl::body Rappture::Mesh::GetCellType { name } { |
---|
1138 | array set name2type { |
---|
1139 | "triangle" 5 |
---|
1140 | "quad" 9 |
---|
1141 | "tetrahedron" 10 |
---|
1142 | "hexahedron" 12 |
---|
1143 | "wedge" 13 |
---|
1144 | "pyramid" 14 |
---|
1145 | } |
---|
1146 | if { [info exists name2type($name)] } { |
---|
1147 | return $name2type($name) |
---|
1148 | } |
---|
1149 | if { [string is int $name] == 1 && $name >= 1 && $name <= 16 } { |
---|
1150 | return $name |
---|
1151 | } |
---|
1152 | error "invalid celltype \"$name\"" |
---|
1153 | } |
---|
1154 | |
---|
1155 | itcl::body Rappture::Mesh::GetNumIndices { type } { |
---|
1156 | array set type2indices { |
---|
1157 | 1 1 |
---|
1158 | 2 0 |
---|
1159 | 3 2 |
---|
1160 | 4 0 |
---|
1161 | 5 3 |
---|
1162 | 6 0 |
---|
1163 | 7 0 |
---|
1164 | 8 4 |
---|
1165 | 9 4 |
---|
1166 | 10 4 |
---|
1167 | 11 8 |
---|
1168 | 12 8 |
---|
1169 | 13 6 |
---|
1170 | 14 5 |
---|
1171 | 15 0 |
---|
1172 | 16 0 |
---|
1173 | } |
---|
1174 | if { [info exists type2indices($type)] } { |
---|
1175 | return $type2indices($type) |
---|
1176 | } |
---|
1177 | error "invalid celltype \"$type\"" |
---|
1178 | } |
---|