1 | # -*- mode: tcl; indent-tabs-mode: nil -*- |
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2 | # ---------------------------------------------------------------------- |
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3 | # COMPONENT: mesh - represents a structured mesh for a device |
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4 | # |
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5 | # This object represents a mesh in an XML description of simulator |
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6 | # output. A mesh is a structured arrangement of points, as elements |
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7 | # composed of nodes representing coordinates. This is a little |
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8 | # different from a cloud, which is an unstructured arrangement |
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9 | # (shotgun blast) of points. |
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10 | # ====================================================================== |
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11 | # AUTHOR: Michael McLennan, Purdue University |
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12 | # Copyright (c) 2004-2012 HUBzero Foundation, LLC |
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13 | # |
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14 | # See the file "license.terms" for information on usage and |
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15 | # redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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16 | # ====================================================================== |
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17 | package require Itcl |
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18 | |
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19 | namespace eval Rappture { |
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20 | # forward declaration |
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21 | } |
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22 | |
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23 | itcl::class Rappture::Mesh { |
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24 | constructor {xmlobj path} { |
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25 | # defined below |
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26 | } |
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27 | destructor { |
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28 | # defined below |
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29 | } |
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30 | public method points {} |
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31 | public method elements {} |
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32 | public method mesh {{-type "vtk"}} |
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33 | public method dimensions {} |
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34 | public method limits {which} |
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35 | public method units { axis } |
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36 | public method label { axis } |
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37 | public method hints {{key ""}} |
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38 | public method isvalid {} { |
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39 | return $_isValid |
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40 | } |
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41 | public proc fetch {xmlobj path} |
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42 | public proc release {obj} |
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43 | public method vtkdata {{what -partial}} |
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44 | public method type {} { |
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45 | return $_type |
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46 | } |
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47 | public method numpoints {} { |
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48 | return $_numPoints |
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49 | } |
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50 | public method numcells {} { |
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51 | return $_numCells |
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52 | } |
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53 | |
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54 | private method ReadNodesElements {path} |
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55 | private method GetDimension { path } |
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56 | private method GetDouble { path } |
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57 | private method GetInt { path } |
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58 | private method InitHints {} |
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59 | private method ReadGrid { path } |
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60 | private method ReadUnstructuredGrid { path } |
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61 | private method ReadVtk { path } |
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62 | private method WriteTriangles { path xv yv zv triangles } |
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63 | private method WriteQuads { path xv yv zv quads } |
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64 | private method WriteVertices { path xv yv zv vertices } |
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65 | private method WriteLines { path xv yv zv lines } |
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66 | private method WritePolygons { path xv yv zv polygons } |
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67 | private method WriteTriangleStrips { path xv yv zv trianglestrips } |
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68 | private method WriteTetrahedrons { path xv yv zv tetrahedrons } |
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69 | private method WriteHexahedrons { path xv yv zv hexhedrons } |
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70 | private method WriteWedges { path xv yv zv wedges } |
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71 | private method WritePyramids { path xv yv zv pyramids } |
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72 | private method WriteHybridCells { path xv yv zv cells celltypes } |
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73 | private method WritePointCloud { path xv yv zv } |
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74 | private method GetCellType { name } |
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75 | private method GetNumIndices { type } |
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76 | |
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77 | private variable _xmlobj ""; # Ref to XML obj with device data |
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78 | private variable _mesh ""; # Lib obj representing this mesh |
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79 | private variable _dim 0; # Dimension of mesh (1, 2, or 3) |
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80 | private variable _type ""; # Indicates the type of mesh. |
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81 | private variable _axis2units; # System of units for x, y, z |
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82 | private variable _axis2labels; # |
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83 | private variable _hints |
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84 | private variable _limits; # Array of mesh limits. Keys are |
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85 | # xmin, xmax, ymin, ymax, ... |
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86 | private variable _numPoints 0; # Number of points in mesh |
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87 | private variable _numCells 0; # Number of cells in mesh |
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88 | private variable _vtkdata ""; # Mesh in vtk file format. |
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89 | private variable _isValid 0; # Indicates if the mesh is valid. |
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90 | |
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91 | private common _xp2obj; # used for fetch/release ref counting |
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92 | private common _obj2ref; # used for fetch/release ref counting |
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93 | } |
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94 | |
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95 | # ---------------------------------------------------------------------- |
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96 | # USAGE: Rappture::Mesh::fetch <xmlobj> <path> |
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97 | # |
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98 | # Clients use this instead of a constructor to fetch the Mesh for |
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99 | # a particular <path> in the <xmlobj>. When the client is done with |
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100 | # the mesh, he calls "release" to decrement the reference count. |
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101 | # When the mesh is no longer needed, it is cleaned up automatically. |
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102 | # ---------------------------------------------------------------------- |
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103 | itcl::body Rappture::Mesh::fetch {xmlobj path} { |
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104 | set handle "$xmlobj|$path" |
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105 | if {[info exists _xp2obj($handle)]} { |
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106 | set obj $_xp2obj($handle) |
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107 | incr _obj2ref($obj) |
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108 | return $obj |
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109 | } |
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110 | set obj [Rappture::Mesh ::#auto $xmlobj $path] |
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111 | set _xp2obj($handle) $obj |
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112 | set _obj2ref($obj) 1 |
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113 | return $obj |
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114 | } |
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115 | |
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116 | # ---------------------------------------------------------------------- |
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117 | # USAGE: Rappture::Mesh::release <obj> |
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118 | # |
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119 | # Clients call this when they're no longer using a Mesh fetched |
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120 | # previously by the "fetch" proc. This decrements the reference |
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121 | # count for the mesh and destroys the object when it is no longer |
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122 | # in use. |
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123 | # ---------------------------------------------------------------------- |
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124 | itcl::body Rappture::Mesh::release {obj} { |
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125 | if {[info exists _obj2ref($obj)]} { |
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126 | incr _obj2ref($obj) -1 |
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127 | if {$_obj2ref($obj) <= 0} { |
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128 | unset _obj2ref($obj) |
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129 | foreach handle [array names _xp2obj] { |
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130 | if {$_xp2obj($handle) == $obj} { |
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131 | unset _xp2obj($handle) |
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132 | } |
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133 | } |
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134 | itcl::delete object $obj |
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135 | } |
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136 | } else { |
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137 | error "can't find reference count for $obj" |
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138 | } |
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139 | } |
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140 | |
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141 | # ---------------------------------------------------------------------- |
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142 | # CONSTRUCTOR |
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143 | # ---------------------------------------------------------------------- |
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144 | itcl::body Rappture::Mesh::constructor {xmlobj path} { |
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145 | package require vtk |
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146 | if {![Rappture::library isvalid $xmlobj]} { |
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147 | error "bad value \"$xmlobj\": should be Rappture::library" |
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148 | } |
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149 | set _xmlobj $xmlobj |
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150 | set _mesh [$xmlobj element -as object $path] |
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151 | |
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152 | # Initialize mesh bounds to empty |
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153 | foreach axis {x y z} { |
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154 | set _limits($axis) "" |
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155 | } |
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156 | set units [$_mesh get units] |
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157 | set first [lindex $units 0] |
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158 | foreach u $units axis { x y z } { |
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159 | if { $u != "" } { |
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160 | set _axis2units($axis) $u |
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161 | } else { |
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162 | set _axis2units($axis) $first |
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163 | } |
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164 | } |
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165 | foreach label [$_mesh get labels] axis { x y z } { |
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166 | if { $label != "" } { |
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167 | set _axis2labels($axis) $label |
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168 | } else { |
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169 | set _axis2labels($axis) [string toupper $axis] |
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170 | } |
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171 | } |
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172 | |
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173 | # Meshes comes in a variety of flavors |
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174 | # |
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175 | # Dimensionality is determined from the <dimension> tag. |
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176 | # |
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177 | # <vtk> described mesh |
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178 | # <element> + <node> definitions |
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179 | # <grid> rectangular mesh |
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180 | # <unstructured> homogeneous cell type mesh. |
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181 | |
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182 | # Check that only one mesh type was defined. |
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183 | set subcount 0 |
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184 | foreach cname [$_mesh children] { |
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185 | foreach type { vtk grid unstructured } { |
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186 | if { $cname == $type } { |
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187 | incr subcount |
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188 | break |
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189 | } |
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190 | } |
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191 | } |
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192 | if {[$_mesh element "node"] != "" || |
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193 | [$_mesh element "element"] != ""} { |
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194 | incr subcount |
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195 | } |
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196 | |
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197 | if { $subcount == 0 } { |
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198 | puts stderr "WARNING: no mesh specified for \"$path\"." |
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199 | return |
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200 | } |
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201 | if { $subcount > 1 } { |
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202 | puts stderr "WARNING: too many mesh types specified for \"$path\"." |
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203 | return |
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204 | } |
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205 | set result 0 |
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206 | if { [$_mesh element "vtk"] != ""} { |
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207 | set result [ReadVtk $path] |
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208 | } elseif {[$_mesh element "grid"] != "" } { |
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209 | set result [ReadGrid $path] |
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210 | } elseif {[$_mesh element "unstructured"] != "" } { |
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211 | set result [ReadUnstructuredGrid $path] |
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212 | } elseif {[$_mesh element "node"] != "" && [$_mesh element "element"] != ""} { |
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213 | puts stderr "WARNING: <node>/<element> mesh is deprecated. Please use an unstructured mesh instead." |
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214 | set result [ReadNodesElements $path] |
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215 | } |
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216 | set _isValid $result |
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217 | InitHints |
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218 | } |
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219 | |
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220 | # ---------------------------------------------------------------------- |
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221 | # DESTRUCTOR |
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222 | # ---------------------------------------------------------------------- |
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223 | itcl::body Rappture::Mesh::destructor {} { |
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224 | # don't destroy the _xmlobj! we don't own it! |
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225 | itcl::delete object $_mesh |
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226 | } |
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227 | |
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228 | # |
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229 | # vtkdata -- |
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230 | # |
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231 | # This is called by the field object to generate a VTK file to send to |
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232 | # the remote render server. Returns the vtkDataSet object containing |
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233 | # (at this point) just the mesh. The field object doesn't know (or |
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234 | # care) what type of mesh is used. The field object will add field |
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235 | # arrays before generating output to send to the remote render server. |
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236 | # |
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237 | itcl::body Rappture::Mesh::vtkdata {{what -partial}} { |
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238 | if {$what == "-full"} { |
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239 | append out "# vtk DataFile Version 3.0\n" |
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240 | append out "[hints label]\n" |
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241 | append out "ASCII\n" |
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242 | append out $_vtkdata |
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243 | return $out |
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244 | } else { |
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245 | return $_vtkdata |
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246 | } |
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247 | } |
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248 | |
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249 | # ---------------------------------------------------------------------- |
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250 | # USAGE: points |
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251 | # |
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252 | # Returns the vtk object containing the points for this mesh. |
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253 | # ---------------------------------------------------------------------- |
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254 | itcl::body Rappture::Mesh::points {} { |
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255 | return "" |
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256 | } |
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257 | |
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258 | # |
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259 | # units -- |
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260 | # |
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261 | # Returns the units of the given axis. |
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262 | # |
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263 | itcl::body Rappture::Mesh::units { axis } { |
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264 | if { ![info exists _axis2units($axis)] } { |
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265 | return "" |
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266 | } |
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267 | return $_axis2units($axis) |
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268 | } |
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269 | |
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270 | # |
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271 | # label -- |
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272 | # |
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273 | # Returns the label of the given axis. |
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274 | # |
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275 | itcl::body Rappture::Mesh::label { axis } { |
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276 | if { ![info exists _axis2labels($axis)] } { |
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277 | return "" |
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278 | } |
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279 | return $_axis2labels($axis) |
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280 | } |
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281 | |
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282 | # ---------------------------------------------------------------------- |
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283 | # USAGE: elements |
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284 | # |
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285 | # Returns a list of the form {plist r plist r ...} for each element |
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286 | # in this mesh. Each plist is a list of {x y x y ...} coordinates |
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287 | # for the mesh. |
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288 | # ---------------------------------------------------------------------- |
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289 | itcl::body Rappture::Mesh::elements {} { |
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290 | # build a map for region number => region type |
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291 | foreach comp [$_mesh children -type region] { |
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292 | set id [$_mesh element -as id $comp] |
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293 | set regions($id) [$_mesh get $comp] |
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294 | } |
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295 | set regions() "unknown" |
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296 | |
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297 | set rlist "" |
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298 | foreach comp [$_mesh children -type element] { |
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299 | set rid [$_mesh get $comp.region] |
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300 | |
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301 | # |
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302 | # HACK ALERT! |
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303 | # |
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304 | # Prophet puts out nodes in a funny "Z" shaped order, |
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305 | # not in proper clockwise fashion. Switch the last |
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306 | # two nodes for now to make them correct. |
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307 | # |
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308 | set nlist [$_mesh get $comp.nodes] |
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309 | set n2 [lindex $nlist 2] |
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310 | set n3 [lindex $nlist 3] |
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311 | set nlist [lreplace $nlist 2 3 $n3 $n2] |
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312 | lappend nlist [lindex $nlist 0] |
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313 | |
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314 | set plist "" |
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315 | foreach nid $nlist { |
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316 | eval lappend plist [$_mesh get node($nid)] |
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317 | } |
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318 | lappend rlist $plist $regions($rid) |
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319 | } |
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320 | return $rlist |
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321 | } |
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322 | |
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323 | # ---------------------------------------------------------------------- |
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324 | # USAGE: mesh |
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325 | # |
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326 | # Returns the vtk object representing the mesh. |
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327 | # ---------------------------------------------------------------------- |
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328 | itcl::body Rappture::Mesh::mesh { {type "vtk"} } { |
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329 | switch $type { |
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330 | "vtk" { |
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331 | return "" |
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332 | } |
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333 | default { |
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334 | error "Requested mesh type \"$type\" is unknown." |
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335 | } |
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336 | } |
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337 | } |
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338 | |
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339 | # ---------------------------------------------------------------------- |
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340 | # USAGE: dimensions |
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341 | # |
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342 | # Returns the number of dimensions for this object: 1, 2, or 3. |
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343 | # ---------------------------------------------------------------------- |
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344 | itcl::body Rappture::Mesh::dimensions {} { |
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345 | return $_dim |
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346 | } |
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347 | |
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348 | # ---------------------------------------------------------------------- |
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349 | # USAGE: limits x|y|z |
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350 | # |
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351 | # Returns the {min max} coords for the limits of the specified axis. |
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352 | # ---------------------------------------------------------------------- |
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353 | itcl::body Rappture::Mesh::limits {axis} { |
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354 | if {![info exists _limits($axis)]} { |
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355 | error "bad axis \"$which\": should be x, y, z" |
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356 | } |
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357 | return $_limits($axis) |
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358 | } |
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359 | |
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360 | # ---------------------------------------------------------------------- |
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361 | # USAGE: hints ?<keyword>? |
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362 | # |
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363 | # Returns a list of key/value pairs for various hints about plotting |
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364 | # this field. If a particular <keyword> is specified, then it returns |
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365 | # the hint for that <keyword>, if it exists. |
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366 | # ---------------------------------------------------------------------- |
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367 | itcl::body Rappture::Mesh::hints {{keyword ""}} { |
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368 | if {$keyword != ""} { |
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369 | if {[info exists _hints($keyword)]} { |
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370 | return $_hints($keyword) |
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371 | } |
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372 | return "" |
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373 | } |
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374 | return [array get _hints] |
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375 | } |
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376 | |
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377 | # ---------------------------------------------------------------------- |
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378 | # USAGE: InitHints |
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379 | # |
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380 | # Returns a list of key/value pairs for various hints about plotting |
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381 | # this mesh. If a particular <keyword> is specified, then it returns |
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382 | # the hint for that <keyword>, if it exists. |
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383 | # ---------------------------------------------------------------------- |
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384 | itcl::body Rappture::Mesh::InitHints {} { |
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385 | foreach {key path} { |
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386 | camera camera.position |
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387 | color about.color |
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388 | label about.label |
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389 | style about.style |
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390 | units units |
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391 | } { |
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392 | set str [$_mesh get $path] |
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393 | if {"" != $str} { |
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394 | set _hints($key) $str |
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395 | } |
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396 | } |
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397 | foreach {key path} { |
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398 | toolid tool.id |
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399 | toolname tool.name |
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400 | toolcommand tool.execute |
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401 | tooltitle tool.title |
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402 | toolrevision tool.version.application.revision |
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403 | } { |
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404 | set str [$_xmlobj get $path] |
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405 | if { "" != $str } { |
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406 | set _hints($key) $str |
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407 | } |
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408 | } |
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409 | } |
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410 | |
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411 | itcl::body Rappture::Mesh::GetDimension { path } { |
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412 | set string [$_xmlobj get $path.dim] |
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413 | if { $string == "" } { |
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414 | puts stderr "WARNING: no tag <dim> found in mesh \"$path\"." |
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415 | return 0 |
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416 | } |
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417 | if { [scan $string "%d" _dim] == 1 } { |
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418 | if { $_dim == 1 || $_dim == 2 || $_dim == 3 } { |
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419 | return 1 |
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420 | } |
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421 | } |
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422 | puts stderr "WARNING: bad <dim> tag value \"$string\": should be 1, 2 or 3." |
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423 | return 0 |
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424 | } |
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425 | |
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426 | itcl::body Rappture::Mesh::GetDouble { path } { |
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427 | set string [$_xmlobj get $path] |
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428 | if { [scan $string "%g" value] != 1 } { |
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429 | puts stderr "ERROR: can't get double value \"$string\" of \"$path\"" |
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430 | return 0.0 |
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431 | } |
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432 | return $value |
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433 | } |
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434 | |
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435 | itcl::body Rappture::Mesh::GetInt { path } { |
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436 | set string [$_xmlobj get $path] |
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437 | if { [scan $string "%d" value] != 1 } { |
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438 | puts stderr "ERROR: can't get integer value \"$string\" of \"$path\"" |
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439 | return 0.0 |
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440 | } |
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441 | return $value |
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442 | } |
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443 | |
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444 | itcl::body Rappture::Mesh::ReadVtk { path } { |
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445 | set _type "vtk" |
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446 | |
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447 | if { ![GetDimension $path] } { |
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448 | return 0 |
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449 | } |
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450 | # Create a VTK file with the mesh in it. |
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451 | set _vtkdata [$_xmlobj get $path.vtk] |
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452 | append out "# vtk DataFile Version 3.0\n" |
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453 | append out "mesh\n" |
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454 | append out "ASCII\n" |
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455 | append out "$_vtkdata\n" |
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456 | |
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457 | # Write the contents to a file just in case it's binary. |
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458 | set tmpfile file[pid].vtk |
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459 | set f [open "$tmpfile" "w"] |
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460 | fconfigure $f -translation binary -encoding binary |
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461 | puts $f $out |
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462 | close $f |
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463 | |
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464 | # Read the data back into a vtk dataset and query the bounds. |
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465 | set reader $this-datasetreader |
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466 | vtkDataSetReader $reader |
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467 | $reader SetFileName $tmpfile |
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468 | $reader Update |
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469 | set output [$reader GetOutput] |
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470 | set _numPoints [$output GetNumberOfPoints] |
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471 | set _numCells [$output GetNumberOfCells] |
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472 | foreach { xmin xmax ymin ymax zmin zmax } [$output GetBounds] break |
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473 | set _limits(x) [list $xmin $xmax] |
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474 | set _limits(y) [list $ymin $ymax] |
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475 | set _limits(z) [list $zmin $zmax] |
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476 | file delete $tmpfile |
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477 | rename $output "" |
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478 | rename $reader "" |
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479 | return 1 |
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480 | } |
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481 | |
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482 | itcl::body Rappture::Mesh::ReadGrid { path } { |
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483 | set _type "grid" |
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484 | |
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485 | if { ![GetDimension $path] } { |
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486 | return 0 |
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487 | } |
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488 | set numUniform 0 |
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489 | set numRectilinear 0 |
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490 | set numCurvilinear 0 |
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491 | foreach axis { x y z } { |
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492 | set min [$_xmlobj get "$path.grid.${axis}axis.min"] |
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493 | set max [$_xmlobj get "$path.grid.${axis}axis.max"] |
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494 | set num [$_xmlobj get "$path.grid.${axis}axis.numpoints"] |
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495 | set coords [$_xmlobj get "$path.grid.${axis}coords"] |
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496 | set dim [$_xmlobj get "$path.grid.${axis}dim"] |
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497 | if { $min != "" && $max != "" && $num != "" && $num > 0 } { |
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498 | set ${axis}Min $min |
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499 | set ${axis}Max $max |
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500 | set ${axis}Num $num |
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501 | if {$min > $max} { |
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502 | puts stderr "ERROR: grid $axis axis minimum larger than maximum" |
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503 | return 0 |
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504 | } |
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505 | incr numUniform |
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506 | } elseif { $coords != "" } { |
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507 | incr numRectilinear |
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508 | set ${axis}Coords $coords |
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509 | } elseif { $dim != "" } { |
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510 | set ${axis}Num $dim |
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511 | incr numCurvilinear |
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512 | } |
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513 | } |
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514 | set _dim [expr $numRectilinear + $numUniform + $numCurvilinear] |
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515 | if { $_dim == 0 } { |
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516 | # No data found. |
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517 | puts stderr "WARNING: bad grid \"$path\": no data found" |
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518 | return 0 |
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519 | } |
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520 | if { $numCurvilinear > 0 } { |
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521 | # This is the 2D/3D curilinear case. We found <xdim>, <ydim>, or <zdim> |
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522 | if { $numRectilinear > 0 || $numUniform > 0 } { |
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523 | puts stderr "WARNING: bad grid \"$path\": can't mix curvilinear and rectilinear grids." |
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524 | return 0 |
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525 | } |
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526 | set points [$_xmlobj get $path.grid.points] |
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527 | if { $points == "" } { |
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528 | puts stderr "WARNING: bad grid \"$path\": no <points> found." |
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529 | return 0 |
---|
530 | } |
---|
531 | if { ![info exists xNum] } { |
---|
532 | puts stderr "WARNING: bad grid \"$path\": invalid dimensions for curvilinear grid: missing <xdim> from grid description." |
---|
533 | return 0 |
---|
534 | } |
---|
535 | set all [blt::vector create \#auto] |
---|
536 | set xv [blt::vector create \#auto] |
---|
537 | set yv [blt::vector create \#auto] |
---|
538 | set zv [blt::vector create \#auto] |
---|
539 | $all set $points |
---|
540 | set numCoords [$all length] |
---|
541 | if { [info exists zNum] } { |
---|
542 | if { ![info exists yNum] || ![info exists xNum] } { |
---|
543 | puts stderr "WARNING: bad grid \"$path\": missing grid dimension" |
---|
544 | blt::vector destroy $all $xv $yv $zv |
---|
545 | return 0 |
---|
546 | } |
---|
547 | set _dim 3 |
---|
548 | set _numPoints [expr $xNum * $yNum * $zNum] |
---|
549 | set _numCells [expr ($xNum > 1 ? ($xNum - 1) : 1) * ($yNum > 1 ? ($yNum - 1) : 1) * ($zNum > 1 ? ($zNum - 1) : 1)] |
---|
550 | if { ($_numPoints*3) != $numCoords } { |
---|
551 | puts stderr "WARNING: bad grid \"$path\": invalid grid: \# of points does not match dimensions <xdim> * <ydim> * <zdim>" |
---|
552 | blt::vector destroy $all $xv $yv $zv |
---|
553 | return 0 |
---|
554 | } |
---|
555 | if { ($numCoords % 3) != 0 } { |
---|
556 | puts stderr "WARNING: bad grid \"$path\": wrong \# of coordinates for 3D grid" |
---|
557 | blt::vector destroy $all $xv $yv $zv |
---|
558 | return 0 |
---|
559 | } |
---|
560 | $all split $xv $yv $zv |
---|
561 | foreach axis {x y z} { |
---|
562 | set vector [set ${axis}v] |
---|
563 | set _limits($axis) [$vector limits] |
---|
564 | } |
---|
565 | append out "DATASET STRUCTURED_GRID\n" |
---|
566 | append out "DIMENSIONS $xNum $yNum $zNum\n" |
---|
567 | append out "POINTS $_numPoints double\n" |
---|
568 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
569 | append out "$x $y $z\n" |
---|
570 | } |
---|
571 | set _vtkdata $out |
---|
572 | } elseif { [info exists yNum] } { |
---|
573 | if { ![info exists xNum] } { |
---|
574 | puts stderr "WARNING: bad grid \"$path\": missing grid dimension" |
---|
575 | blt::vector destroy $all $xv $yv $zv |
---|
576 | return 0 |
---|
577 | } |
---|
578 | set _dim 2 |
---|
579 | set _numPoints [expr $xNum * $yNum] |
---|
580 | set _numCells [expr ($xNum > 1 ? ($xNum - 1) : 1) * ($yNum > 1 ? ($yNum - 1) : 1)] |
---|
581 | if { ($_numPoints*2) != $numCoords } { |
---|
582 | puts stderr "WARNING: bad grid \"$path\": \# of points does not match dimensions <xdim> * <ydim>" |
---|
583 | blt::vector destroy $all $xv $yv $zv |
---|
584 | return 0 |
---|
585 | } |
---|
586 | if { ($numCoords % 2) != 0 } { |
---|
587 | puts stderr "WARNING: bad grid \"$path\": wrong \# of coordinates for 2D grid" |
---|
588 | blt::vector destroy $all $xv $yv $zv |
---|
589 | return 0 |
---|
590 | } |
---|
591 | $all split $xv $yv |
---|
592 | foreach axis {x y} { |
---|
593 | set vector [set ${axis}v] |
---|
594 | set _limits($axis) [$vector limits] |
---|
595 | } |
---|
596 | set _limits(z) [list 0 0] |
---|
597 | $zv seq 0 0 [$xv length] |
---|
598 | $all merge $xv $yv $zv |
---|
599 | append out "DATASET STRUCTURED_GRID\n" |
---|
600 | append out "DIMENSIONS $xNum $yNum 1\n" |
---|
601 | append out "POINTS $_numPoints double\n" |
---|
602 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
603 | append out "$x $y $z\n" |
---|
604 | } |
---|
605 | set _vtkdata $out |
---|
606 | } else { |
---|
607 | set _dim 1 |
---|
608 | set _numPoints $xNum |
---|
609 | set _numCells [expr $xNum - 1] |
---|
610 | if { $_numPoints != $numCoords } { |
---|
611 | puts stderr "WARNING: bad grid \"$path\": \# of points does not match <xdim>" |
---|
612 | blt::vector destroy $all $xv $yv $zv |
---|
613 | return 0 |
---|
614 | } |
---|
615 | $all dup $xv |
---|
616 | set _limits(x) [$xv limits] |
---|
617 | set _limits(y) [list 0 0] |
---|
618 | set _limits(z) [list 0 0] |
---|
619 | $yv seq 0 0 [$xv length] |
---|
620 | $zv seq 0 0 [$xv length] |
---|
621 | $all merge $xv $yv $zv |
---|
622 | append out "DATASET STRUCTURED_GRID\n" |
---|
623 | append out "DIMENSIONS $xNum 1 1\n" |
---|
624 | append out "POINTS $_numPoints double\n" |
---|
625 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
626 | append out "$x $y $z\n" |
---|
627 | } |
---|
628 | set _vtkdata $out |
---|
629 | } |
---|
630 | blt::vector destroy $all $xv $yv $zv |
---|
631 | return 1 |
---|
632 | } |
---|
633 | if { $numRectilinear == 0 && $numUniform > 0} { |
---|
634 | # This is the special case where all axes 2D/3D are uniform. |
---|
635 | # This results in a STRUCTURED_POINTS |
---|
636 | if { $_dim == 1 } { |
---|
637 | if {$xNum == 1} { |
---|
638 | set xSpace 0 |
---|
639 | } else { |
---|
640 | set xSpace [expr ($xMax - $xMin) / double($xNum - 1)] |
---|
641 | } |
---|
642 | set _numPoints $xNum |
---|
643 | set _numCells [expr $xNum - 1] |
---|
644 | append out "DATASET STRUCTURED_POINTS\n" |
---|
645 | append out "DIMENSIONS $xNum 1 1\n" |
---|
646 | append out "ORIGIN $xMin 0 0\n" |
---|
647 | append out "SPACING $xSpace 0 0\n" |
---|
648 | set _vtkdata $out |
---|
649 | set _limits(x) [list $xMin $xMax] |
---|
650 | set _limits(y) [list 0 0] |
---|
651 | set _limits(z) [list 0 0] |
---|
652 | } elseif { $_dim == 2 } { |
---|
653 | if {$xNum == 1} { |
---|
654 | set xSpace 0 |
---|
655 | } else { |
---|
656 | set xSpace [expr ($xMax - $xMin) / double($xNum - 1)] |
---|
657 | } |
---|
658 | if {$yNum == 1} { |
---|
659 | set ySpace 0 |
---|
660 | } else { |
---|
661 | set ySpace [expr ($yMax - $yMin) / double($yNum - 1)] |
---|
662 | } |
---|
663 | set _numPoints [expr $xNum * $yNum] |
---|
664 | set _numCells [expr ($xNum > 1 ? ($xNum - 1) : 1) * ($yNum > 1 ? ($yNum - 1) : 1)] |
---|
665 | append out "DATASET STRUCTURED_POINTS\n" |
---|
666 | append out "DIMENSIONS $xNum $yNum 1\n" |
---|
667 | append out "ORIGIN $xMin $yMin 0\n" |
---|
668 | append out "SPACING $xSpace $ySpace 0\n" |
---|
669 | set _vtkdata $out |
---|
670 | foreach axis {x y} { |
---|
671 | set _limits($axis) [list [set ${axis}Min] [set ${axis}Max]] |
---|
672 | } |
---|
673 | set _limits(z) [list 0 0] |
---|
674 | } elseif { $_dim == 3 } { |
---|
675 | if {$xNum == 1} { |
---|
676 | set xSpace 0 |
---|
677 | } else { |
---|
678 | set xSpace [expr ($xMax - $xMin) / double($xNum - 1)] |
---|
679 | } |
---|
680 | if {$yNum == 1} { |
---|
681 | set ySpace 0 |
---|
682 | } else { |
---|
683 | set ySpace [expr ($yMax - $yMin) / double($yNum - 1)] |
---|
684 | } |
---|
685 | if {$zNum == 1} { |
---|
686 | set zSpace 0 |
---|
687 | } else { |
---|
688 | set zSpace [expr ($zMax - $zMin) / double($zNum - 1)] |
---|
689 | } |
---|
690 | set _numPoints [expr $xNum * $yNum * $zNum] |
---|
691 | set _numCells [expr ($xNum > 1 ? ($xNum - 1) : 1) * ($yNum > 1 ? ($yNum - 1) : 1) * ($zNum > 1 ? ($zNum - 1) : 1)] |
---|
692 | append out "DATASET STRUCTURED_POINTS\n" |
---|
693 | append out "DIMENSIONS $xNum $yNum $zNum\n" |
---|
694 | append out "ORIGIN $xMin $yMin $zMin\n" |
---|
695 | append out "SPACING $xSpace $ySpace $zSpace\n" |
---|
696 | set _vtkdata $out |
---|
697 | foreach axis {x y z} { |
---|
698 | set _limits($axis) [list [set ${axis}Min] [set ${axis}Max]] |
---|
699 | } |
---|
700 | } else { |
---|
701 | puts stderr "WARNING: bad grid \"$path\": bad dimension \"$_dim\"" |
---|
702 | return 0 |
---|
703 | } |
---|
704 | return 1 |
---|
705 | } |
---|
706 | # This is the hybrid case. Some axes are uniform, others are nonuniform. |
---|
707 | set xv [blt::vector create \#auto] |
---|
708 | if { [info exists xMin] } { |
---|
709 | $xv seq $xMin $xMax $xNum |
---|
710 | } else { |
---|
711 | $xv set [$_xmlobj get $path.grid.xcoords] |
---|
712 | set xMin [$xv min] |
---|
713 | set xMax [$xv max] |
---|
714 | set xNum [$xv length] |
---|
715 | } |
---|
716 | set yv [blt::vector create \#auto] |
---|
717 | if { $_dim > 1 } { |
---|
718 | if { [info exists yMin] } { |
---|
719 | $yv seq $yMin $yMax $yNum |
---|
720 | } else { |
---|
721 | $yv set [$_xmlobj get $path.grid.ycoords] |
---|
722 | set yMin [$yv min] |
---|
723 | set yMax [$yv max] |
---|
724 | set yNum [$yv length] |
---|
725 | } |
---|
726 | } else { |
---|
727 | set yNum 1 |
---|
728 | } |
---|
729 | set zv [blt::vector create \#auto] |
---|
730 | if { $_dim == 3 } { |
---|
731 | if { [info exists zMin] } { |
---|
732 | $zv seq $zMin $zMax $zNum |
---|
733 | } else { |
---|
734 | $zv set [$_xmlobj get $path.grid.zcoords] |
---|
735 | set zMin [$zv min] |
---|
736 | set zMax [$zv max] |
---|
737 | set zNum [$zv length] |
---|
738 | } |
---|
739 | } else { |
---|
740 | set zNum 1 |
---|
741 | } |
---|
742 | if { $_dim == 3 } { |
---|
743 | set _numPoints [expr $xNum * $yNum * $zNum] |
---|
744 | set _numCells [expr ($xNum > 1 ? ($xNum - 1) : 1) * ($yNum > 1 ? ($yNum - 1) : 1) * ($zNum > 1 ? ($zNum - 1) : 1)] |
---|
745 | append out "DATASET RECTILINEAR_GRID\n" |
---|
746 | append out "DIMENSIONS $xNum $yNum $zNum\n" |
---|
747 | append out "X_COORDINATES $xNum double\n" |
---|
748 | append out [$xv range 0 end] |
---|
749 | append out "\n" |
---|
750 | append out "Y_COORDINATES $yNum double\n" |
---|
751 | append out [$yv range 0 end] |
---|
752 | append out "\n" |
---|
753 | append out "Z_COORDINATES $zNum double\n" |
---|
754 | append out [$zv range 0 end] |
---|
755 | append out "\n" |
---|
756 | set _vtkdata $out |
---|
757 | foreach axis {x y z} { |
---|
758 | if { [info exists ${axis}Min] } { |
---|
759 | set _limits($axis) [list [set ${axis}Min] [set ${axis}Max]] |
---|
760 | } |
---|
761 | } |
---|
762 | } elseif { $_dim == 2 } { |
---|
763 | set _numPoints [expr $xNum * $yNum] |
---|
764 | set _numCells [expr ($xNum > 1 ? ($xNum - 1) : 1) * ($yNum > 1 ? ($yNum - 1) : 1)] |
---|
765 | append out "DATASET RECTILINEAR_GRID\n" |
---|
766 | append out "DIMENSIONS $xNum $yNum 1\n" |
---|
767 | append out "X_COORDINATES $xNum double\n" |
---|
768 | append out [$xv range 0 end] |
---|
769 | append out "\n" |
---|
770 | append out "Y_COORDINATES $yNum double\n" |
---|
771 | append out [$yv range 0 end] |
---|
772 | append out "\n" |
---|
773 | append out "Z_COORDINATES 1 double\n" |
---|
774 | append out "0\n" |
---|
775 | foreach axis {x y} { |
---|
776 | if { [info exists ${axis}Min] } { |
---|
777 | set _limits($axis) [list [set ${axis}Min] [set ${axis}Max]] |
---|
778 | } |
---|
779 | } |
---|
780 | set _limits(z) [list 0 0] |
---|
781 | set _vtkdata $out |
---|
782 | } elseif { $_dim == 1 } { |
---|
783 | set _numPoints $xNum |
---|
784 | set _numCells [expr $xNum - 1] |
---|
785 | append out "DATASET RECTILINEAR_GRID\n" |
---|
786 | append out "DIMENSIONS $xNum 1 1\n" |
---|
787 | append out "X_COORDINATES $xNum double\n" |
---|
788 | append out [$xv range 0 end] |
---|
789 | append out "\n" |
---|
790 | append out "Y_COORDINATES 1 double\n" |
---|
791 | append out "0\n" |
---|
792 | append out "Z_COORDINATES 1 double\n" |
---|
793 | append out "0\n" |
---|
794 | if { [info exists xMin] } { |
---|
795 | set _limits(x) [list $xMin $xMax] |
---|
796 | } |
---|
797 | set _limits(y) [list 0 0] |
---|
798 | set _limits(z) [list 0 0] |
---|
799 | set _vtkdata $out |
---|
800 | } else { |
---|
801 | puts stderr "WARNING: bad grid \"$path\": invalid dimension \"$_dim\"" |
---|
802 | return 0 |
---|
803 | } |
---|
804 | blt::vector destroy $xv $yv $zv |
---|
805 | return 1 |
---|
806 | } |
---|
807 | |
---|
808 | itcl::body Rappture::Mesh::WritePointCloud { path xv yv zv } { |
---|
809 | set _type "cloud" |
---|
810 | set _numPoints [$xv length] |
---|
811 | append out "DATASET POLYDATA\n" |
---|
812 | append out "POINTS $_numPoints double\n" |
---|
813 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
814 | append out "$x $y $z\n" |
---|
815 | } |
---|
816 | set _vtkdata $out |
---|
817 | set _limits(x) [$xv limits] |
---|
818 | if { $_dim > 1 } { |
---|
819 | set _limits(y) [$yv limits] |
---|
820 | } else { |
---|
821 | set _limits(y) [list 0 0] |
---|
822 | } |
---|
823 | if { $_dim == 3 } { |
---|
824 | set _limits(z) [$zv limits] |
---|
825 | } else { |
---|
826 | set _limits(z) [list 0 0] |
---|
827 | } |
---|
828 | return 1 |
---|
829 | } |
---|
830 | |
---|
831 | itcl::body Rappture::Mesh::WriteTriangles { path xv yv zv triangles } { |
---|
832 | set _type "triangles" |
---|
833 | set _numPoints [$xv length] |
---|
834 | set _numCells 0 |
---|
835 | set data {} |
---|
836 | set celltypes {} |
---|
837 | foreach { a b c } $triangles { |
---|
838 | append data "3 $a $b $c\n" |
---|
839 | append celltypes "5\n" |
---|
840 | incr _numCells |
---|
841 | } |
---|
842 | append out "DATASET UNSTRUCTURED_GRID\n" |
---|
843 | append out "POINTS $_numPoints double\n" |
---|
844 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
845 | append out "$x $y $z\n" |
---|
846 | } |
---|
847 | set count [expr $_numCells * 4] |
---|
848 | append out "CELLS $_numCells $count\n" |
---|
849 | append out $data |
---|
850 | append out "CELL_TYPES $_numCells\n" |
---|
851 | append out $celltypes |
---|
852 | set _limits(x) [$xv limits] |
---|
853 | set _limits(y) [$yv limits] |
---|
854 | if { $_dim == 3 } { |
---|
855 | set _limits(z) [$zv limits] |
---|
856 | } else { |
---|
857 | set _limits(z) [list 0 0] |
---|
858 | } |
---|
859 | set _vtkdata $out |
---|
860 | return 1 |
---|
861 | } |
---|
862 | |
---|
863 | itcl::body Rappture::Mesh::WriteQuads { path xv yv zv quads } { |
---|
864 | set _type "quads" |
---|
865 | set _numPoints [$xv length] |
---|
866 | set _numCells 0 |
---|
867 | set data {} |
---|
868 | set celltypes {} |
---|
869 | foreach { a b c d } $quads { |
---|
870 | append data "4 $a $b $c $d\n" |
---|
871 | append celltypes "9\n" |
---|
872 | incr _numCells |
---|
873 | } |
---|
874 | append out "DATASET UNSTRUCTURED_GRID\n" |
---|
875 | append out "POINTS $_numPoints double\n" |
---|
876 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
877 | append out "$x $y $z\n" |
---|
878 | } |
---|
879 | set count [expr $_numCells * 5] |
---|
880 | append out "CELLS $_numCells $count\n" |
---|
881 | append out $data |
---|
882 | append out "CELL_TYPES $_numCells\n" |
---|
883 | append out $celltypes |
---|
884 | set _limits(x) [$xv limits] |
---|
885 | set _limits(y) [$yv limits] |
---|
886 | if { $_dim == 3 } { |
---|
887 | set _limits(z) [$zv limits] |
---|
888 | } else { |
---|
889 | set _limits(z) [list 0 0] |
---|
890 | } |
---|
891 | set _vtkdata $out |
---|
892 | return 1 |
---|
893 | } |
---|
894 | |
---|
895 | itcl::body Rappture::Mesh::WriteVertices { path xv yv zv vertices } { |
---|
896 | set _type "vertices" |
---|
897 | set _numPoints [$xv length] |
---|
898 | set _numCells 0 |
---|
899 | set data {} |
---|
900 | set lines [split $vertices \n] |
---|
901 | set count 0 |
---|
902 | foreach { line } $lines { |
---|
903 | set numIndices [llength $line] |
---|
904 | if { $numIndices == 0 } { |
---|
905 | continue |
---|
906 | } |
---|
907 | append data "$numIndices $line\n" |
---|
908 | incr _numCells |
---|
909 | set count [expr $count + $numIndices + 1] |
---|
910 | } |
---|
911 | append out "DATASET POLYDATA\n" |
---|
912 | append out "POINTS $_numPoints double\n" |
---|
913 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
914 | append out "$x $y $z\n" |
---|
915 | } |
---|
916 | append out "VERTICES $_numCells $count\n" |
---|
917 | append out $data |
---|
918 | set _limits(x) [$xv limits] |
---|
919 | set _limits(y) [$yv limits] |
---|
920 | if { $_dim == 3 } { |
---|
921 | set _limits(z) [$zv limits] |
---|
922 | } else { |
---|
923 | set _limits(z) [list 0 0] |
---|
924 | } |
---|
925 | set _vtkdata $out |
---|
926 | return 1 |
---|
927 | } |
---|
928 | |
---|
929 | itcl::body Rappture::Mesh::WriteLines { path xv yv zv polylines } { |
---|
930 | set _type "lines" |
---|
931 | set _numPoints [$xv length] |
---|
932 | set _numCells 0 |
---|
933 | set data {} |
---|
934 | set lines [split $polylines \n] |
---|
935 | set count 0 |
---|
936 | foreach { line } $lines { |
---|
937 | set numIndices [llength $line] |
---|
938 | if { $numIndices == 0 } { |
---|
939 | continue |
---|
940 | } |
---|
941 | append data "$numIndices $line\n" |
---|
942 | incr _numCells |
---|
943 | set count [expr $count + $numIndices + 1] |
---|
944 | } |
---|
945 | append out "DATASET POLYDATA\n" |
---|
946 | append out "POINTS $_numPoints double\n" |
---|
947 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
948 | append out "$x $y $z\n" |
---|
949 | } |
---|
950 | append out "LINES $_numCells $count\n" |
---|
951 | append out $data |
---|
952 | set _limits(x) [$xv limits] |
---|
953 | set _limits(y) [$yv limits] |
---|
954 | if { $_dim == 3 } { |
---|
955 | set _limits(z) [$zv limits] |
---|
956 | } else { |
---|
957 | set _limits(z) [list 0 0] |
---|
958 | } |
---|
959 | set _vtkdata $out |
---|
960 | return 1 |
---|
961 | } |
---|
962 | |
---|
963 | itcl::body Rappture::Mesh::WritePolygons { path xv yv zv polygons } { |
---|
964 | set _type "polygons" |
---|
965 | set _numPoints [$xv length] |
---|
966 | set _numCells 0 |
---|
967 | set data {} |
---|
968 | set lines [split $polygons \n] |
---|
969 | set count 0 |
---|
970 | foreach { line } $lines { |
---|
971 | set numIndices [llength $line] |
---|
972 | if { $numIndices == 0 } { |
---|
973 | continue |
---|
974 | } |
---|
975 | append data "$numIndices $line\n" |
---|
976 | incr _numCells |
---|
977 | set count [expr $count + $numIndices + 1] |
---|
978 | } |
---|
979 | append out "DATASET POLYDATA\n" |
---|
980 | append out "POINTS $_numPoints double\n" |
---|
981 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
982 | append out "$x $y $z\n" |
---|
983 | } |
---|
984 | append out "POLYGONS $_numCells $count\n" |
---|
985 | append out $data |
---|
986 | set _limits(x) [$xv limits] |
---|
987 | set _limits(y) [$yv limits] |
---|
988 | if { $_dim == 3 } { |
---|
989 | set _limits(z) [$zv limits] |
---|
990 | } else { |
---|
991 | set _limits(z) [list 0 0] |
---|
992 | } |
---|
993 | set _vtkdata $out |
---|
994 | return 1 |
---|
995 | } |
---|
996 | |
---|
997 | itcl::body Rappture::Mesh::WriteTriangleStrips { path xv yv zv trianglestrips } { |
---|
998 | set _type "trianglestrips" |
---|
999 | set _numPoints [$xv length] |
---|
1000 | set _numCells 0 |
---|
1001 | set data {} |
---|
1002 | set lines [split $trianglestrips \n] |
---|
1003 | set count 0 |
---|
1004 | foreach { line } $lines { |
---|
1005 | set numIndices [llength $line] |
---|
1006 | if { $numIndices == 0 } { |
---|
1007 | continue |
---|
1008 | } |
---|
1009 | append data "$numIndices $line\n" |
---|
1010 | incr _numCells |
---|
1011 | set count [expr $count + $numIndices + 1] |
---|
1012 | } |
---|
1013 | append out "DATASET POLYDATA\n" |
---|
1014 | append out "POINTS $_numPoints double\n" |
---|
1015 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
1016 | append out "$x $y $z\n" |
---|
1017 | } |
---|
1018 | append out "TRIANGLE_STRIPS $_numCells $count\n" |
---|
1019 | append out $data |
---|
1020 | set _limits(x) [$xv limits] |
---|
1021 | set _limits(y) [$yv limits] |
---|
1022 | if { $_dim == 3 } { |
---|
1023 | set _limits(z) [$zv limits] |
---|
1024 | } else { |
---|
1025 | set _limits(z) [list 0 0] |
---|
1026 | } |
---|
1027 | set _vtkdata $out |
---|
1028 | return 1 |
---|
1029 | } |
---|
1030 | |
---|
1031 | itcl::body Rappture::Mesh::WriteTetrahedrons { path xv yv zv tetras } { |
---|
1032 | set _type "tetrahedrons" |
---|
1033 | set _numPoints [$xv length] |
---|
1034 | set _numCells 0 |
---|
1035 | set data {} |
---|
1036 | set celltypes {} |
---|
1037 | foreach { a b c d } $tetras { |
---|
1038 | append data "4 $a $b $c $d\n" |
---|
1039 | append celltypes "10\n" |
---|
1040 | incr _numCells |
---|
1041 | } |
---|
1042 | append out "DATASET UNSTRUCTURED_GRID\n" |
---|
1043 | append out "POINTS $_numPoints double\n" |
---|
1044 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
1045 | append out "$x $y $z\n" |
---|
1046 | } |
---|
1047 | set count [expr $_numCells * 5] |
---|
1048 | append out "CELLS $_numCells $count\n" |
---|
1049 | append out $data |
---|
1050 | append out "CELL_TYPES $_numCells\n" |
---|
1051 | append out $celltypes |
---|
1052 | set _limits(x) [$xv limits] |
---|
1053 | set _limits(y) [$yv limits] |
---|
1054 | set _limits(z) [$zv limits] |
---|
1055 | |
---|
1056 | set _vtkdata $out |
---|
1057 | return 1 |
---|
1058 | } |
---|
1059 | |
---|
1060 | itcl::body Rappture::Mesh::WriteHexahedrons { path xv yv zv hexas } { |
---|
1061 | set _type "hexahedrons" |
---|
1062 | set _numPoints [$xv length] |
---|
1063 | set _numCells 0 |
---|
1064 | set data {} |
---|
1065 | set celltypes {} |
---|
1066 | foreach { a b c d e f g h } $hexas { |
---|
1067 | append data "8 $a $b $c $d $e $f $g $h\n" |
---|
1068 | append celltypes "12\n" |
---|
1069 | incr _numCells |
---|
1070 | } |
---|
1071 | append out "DATASET UNSTRUCTURED_GRID\n" |
---|
1072 | append out "POINTS $_numPoints double\n" |
---|
1073 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
1074 | append out "$x $y $z\n" |
---|
1075 | } |
---|
1076 | set count [expr $_numCells * 9] |
---|
1077 | append out "CELLS $_numCells $count\n" |
---|
1078 | append out $data |
---|
1079 | append out "CELL_TYPES $_numCells\n" |
---|
1080 | append out $celltypes |
---|
1081 | set _limits(x) [$xv limits] |
---|
1082 | set _limits(y) [$yv limits] |
---|
1083 | set _limits(z) [$zv limits] |
---|
1084 | |
---|
1085 | set _vtkdata $out |
---|
1086 | return 1 |
---|
1087 | } |
---|
1088 | |
---|
1089 | itcl::body Rappture::Mesh::WriteWedges { path xv yv zv wedges } { |
---|
1090 | set _type "wedges" |
---|
1091 | set _numPoints [$xv length] |
---|
1092 | set _numCells 0 |
---|
1093 | set data {} |
---|
1094 | set celltypes {} |
---|
1095 | foreach { a b c d e f } $wedges { |
---|
1096 | append data "6 $a $b $c $d $e $f\n" |
---|
1097 | append celltypes "13\n" |
---|
1098 | incr _numCells |
---|
1099 | } |
---|
1100 | append out "DATASET UNSTRUCTURED_GRID\n" |
---|
1101 | append out "POINTS $_numPoints double\n" |
---|
1102 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
1103 | append out "$x $y $z\n" |
---|
1104 | } |
---|
1105 | set count [expr $_numCells * 7] |
---|
1106 | append out "CELLS $_numCells $count\n" |
---|
1107 | append out $data |
---|
1108 | append out "CELL_TYPES $_numCells\n" |
---|
1109 | append out $celltypes |
---|
1110 | set _limits(x) [$xv limits] |
---|
1111 | set _limits(y) [$yv limits] |
---|
1112 | set _limits(z) [$zv limits] |
---|
1113 | |
---|
1114 | set _vtkdata $out |
---|
1115 | return 1 |
---|
1116 | } |
---|
1117 | |
---|
1118 | itcl::body Rappture::Mesh::WritePyramids { path xv yv zv pyramids } { |
---|
1119 | set _type "pyramids" |
---|
1120 | set _numPoints [$xv length] |
---|
1121 | set _numCells 0 |
---|
1122 | set data {} |
---|
1123 | set celltypes {} |
---|
1124 | foreach { a b c d e } $pyramids { |
---|
1125 | append data "5 $a $b $c $d $e\n" |
---|
1126 | append celltypes "14\n" |
---|
1127 | incr _numCells |
---|
1128 | } |
---|
1129 | append out "DATASET UNSTRUCTURED_GRID\n" |
---|
1130 | append out "POINTS $_numPoints double\n" |
---|
1131 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
1132 | append out "$x $y $z\n" |
---|
1133 | } |
---|
1134 | set count [expr $_numCells * 6] |
---|
1135 | append out "CELLS $_numCells $count\n" |
---|
1136 | append out $data |
---|
1137 | append out "CELL_TYPES $_numCells\n" |
---|
1138 | append out $celltypes |
---|
1139 | set _limits(x) [$xv limits] |
---|
1140 | set _limits(y) [$yv limits] |
---|
1141 | set _limits(z) [$zv limits] |
---|
1142 | |
---|
1143 | set _vtkdata $out |
---|
1144 | return 1 |
---|
1145 | } |
---|
1146 | |
---|
1147 | itcl::body Rappture::Mesh::WriteHybridCells { path xv yv zv cells celltypes } { |
---|
1148 | set _type "unstructured" |
---|
1149 | set lines [split $cells \n] |
---|
1150 | set numCellTypes [llength $celltypes] |
---|
1151 | if { $numCellTypes == 1 } { |
---|
1152 | set celltype [GetCellType $celltypes] |
---|
1153 | } |
---|
1154 | |
---|
1155 | set _numPoints [$xv length] |
---|
1156 | set data {} |
---|
1157 | set count 0 |
---|
1158 | set _numCells 0 |
---|
1159 | set celltypesout {} |
---|
1160 | foreach line $lines { |
---|
1161 | set length [llength $line] |
---|
1162 | if { $length == 0 } { |
---|
1163 | continue |
---|
1164 | } |
---|
1165 | if { $numCellTypes > 1 } { |
---|
1166 | set celltype [GetCellType [lindex $celltypes $_numCells]] |
---|
1167 | } |
---|
1168 | set numIndices [GetNumIndices $celltype] |
---|
1169 | if { $numIndices > 0 && $numIndices != $length } { |
---|
1170 | puts stderr "WARNING: bad unstructured grid \"$path\": wrong \# of indices specified for celltype $celltype on line \"$line\"" |
---|
1171 | return 0 |
---|
1172 | } else { |
---|
1173 | set numIndices $length |
---|
1174 | } |
---|
1175 | append data "$numIndices $line\n" |
---|
1176 | append celltypesout "$celltype\n" |
---|
1177 | incr count $length; # Include the indices |
---|
1178 | incr count; # and the number of indices |
---|
1179 | incr _numCells |
---|
1180 | } |
---|
1181 | append out "DATASET UNSTRUCTURED_GRID\n" |
---|
1182 | append out "POINTS $_numPoints double\n" |
---|
1183 | foreach x [$xv range 0 end] y [$yv range 0 end] z [$zv range 0 end] { |
---|
1184 | append out "$x $y $z\n" |
---|
1185 | } |
---|
1186 | append out "CELLS $_numCells $count\n" |
---|
1187 | append out $data |
---|
1188 | append out "CELL_TYPES $_numCells\n" |
---|
1189 | append out $celltypesout |
---|
1190 | set _limits(x) [$xv limits] |
---|
1191 | set _limits(y) [$yv limits] |
---|
1192 | if { $_dim < 3 } { |
---|
1193 | set _limits(z) [list 0 0] |
---|
1194 | } else { |
---|
1195 | set _limits(z) [$zv limits] |
---|
1196 | } |
---|
1197 | |
---|
1198 | set _vtkdata $out |
---|
1199 | return 1 |
---|
1200 | } |
---|
1201 | |
---|
1202 | itcl::body Rappture::Mesh::ReadUnstructuredGrid { path } { |
---|
1203 | set _type "unstructured" |
---|
1204 | |
---|
1205 | if { ![GetDimension $path] } { |
---|
1206 | return 0 |
---|
1207 | } |
---|
1208 | # Step 1: Verify that there's only one cell tag of any kind. |
---|
1209 | set numCells 0 |
---|
1210 | foreach type { |
---|
1211 | cells |
---|
1212 | hexahedrons |
---|
1213 | lines |
---|
1214 | polygons |
---|
1215 | pyramids |
---|
1216 | quads |
---|
1217 | tetrahedrons |
---|
1218 | triangles |
---|
1219 | trianglestrips |
---|
1220 | vertices |
---|
1221 | wedges |
---|
1222 | } { |
---|
1223 | set data [$_xmlobj get $path.unstructured.$type] |
---|
1224 | if { $data != "" } { |
---|
1225 | incr numCells |
---|
1226 | } |
---|
1227 | } |
---|
1228 | # The generic <cells> tag requires there be a <celltypes> tag too. |
---|
1229 | set celltypes [$_xmlobj get $path.unstructured.celltypes] |
---|
1230 | if { $numCells == 0 && $celltypes != "" } { |
---|
1231 | puts stderr "WARNING: bad unstuctured grid \"$path\": no <cells> description found." |
---|
1232 | return 0 |
---|
1233 | } |
---|
1234 | if { $numCells > 1 } { |
---|
1235 | puts stderr "WARNING: bad unstructured grid \"$path\": too many <cells>, <triangles>, <quads>... descriptions found: should be only one." |
---|
1236 | return 0 |
---|
1237 | } |
---|
1238 | foreach type { |
---|
1239 | cells |
---|
1240 | hexahedrons |
---|
1241 | lines |
---|
1242 | polygons |
---|
1243 | pyramids |
---|
1244 | quads |
---|
1245 | tetrahedrons |
---|
1246 | triangles |
---|
1247 | trianglestrips |
---|
1248 | vertices |
---|
1249 | wedges |
---|
1250 | } { |
---|
1251 | set data [$_xmlobj get $path.unstructured.$type] |
---|
1252 | if { $data != "" } { |
---|
1253 | break |
---|
1254 | } |
---|
1255 | } |
---|
1256 | # Step 2: Allow points to be specified as <points> or |
---|
1257 | # <xcoords>, <ycoords>, <zcoords>. Split and convert into |
---|
1258 | # 3 vectors, one for each coordinate. |
---|
1259 | if { $_dim == 1 } { |
---|
1260 | set xcoords [$_xmlobj get $path.unstructured.xcoords] |
---|
1261 | set ycoords [$_xmlobj get $path.unstructured.ycoords] |
---|
1262 | set zcoords [$_xmlobj get $path.unstructured.zcoords] |
---|
1263 | set data [$_xmlobj get $path.unstructured.points] |
---|
1264 | if { $ycoords != "" } { |
---|
1265 | put stderr "can't specify <ycoords> with a 1D mesh" |
---|
1266 | return 0 |
---|
1267 | } |
---|
1268 | if { $zcoords != "" } { |
---|
1269 | put stderr "can't specify <zcoords> with a 1D mesh" |
---|
1270 | return 0 |
---|
1271 | } |
---|
1272 | if { $xcoords != "" } { |
---|
1273 | set xv [blt::vector create \#auto] |
---|
1274 | $xv set $xcoords |
---|
1275 | } elseif { $data != "" } { |
---|
1276 | Rappture::ReadPoints $data dim points |
---|
1277 | if { $points == "" } { |
---|
1278 | puts stderr "WARNING: bad unstructured grid \"$path\": no <points> found." |
---|
1279 | return 0 |
---|
1280 | } |
---|
1281 | if { $dim != 1 } { |
---|
1282 | puts stderr "WARNING: bad unstructured grid \"$path\": \# of coordinates per point is \"$dim\": does not agree with dimension specified for mesh \"$_dim\"" |
---|
1283 | return 0 |
---|
1284 | } |
---|
1285 | set xv [blt::vector create \#auto] |
---|
1286 | $xv set $points |
---|
1287 | } else { |
---|
1288 | puts stderr "WARNING: bad unstructured grid \"$path\": no points specified." |
---|
1289 | return 0 |
---|
1290 | } |
---|
1291 | set yv [blt::vector create \#auto] |
---|
1292 | set zv [blt::vector create \#auto] |
---|
1293 | $yv seq 0 0 [$xv length]; # Make an all zeroes vector. |
---|
1294 | $zv seq 0 0 [$xv length]; # Make an all zeroes vector. |
---|
1295 | } elseif { $_dim == 2 } { |
---|
1296 | set xcoords [$_xmlobj get $path.unstructured.xcoords] |
---|
1297 | set ycoords [$_xmlobj get $path.unstructured.ycoords] |
---|
1298 | set zcoords [$_xmlobj get $path.unstructured.zcoords] |
---|
1299 | set data [$_xmlobj get $path.unstructured.points] |
---|
1300 | if { $zcoords != "" } { |
---|
1301 | put stderr "can't specify <zcoords> with a 2D mesh" |
---|
1302 | return 0 |
---|
1303 | } |
---|
1304 | if { $xcoords != "" && $ycoords != "" } { |
---|
1305 | set xv [blt::vector create \#auto] |
---|
1306 | set yv [blt::vector create \#auto] |
---|
1307 | $xv set $xcoords |
---|
1308 | $yv set $ycoords |
---|
1309 | } elseif { $data != "" } { |
---|
1310 | Rappture::ReadPoints $data dim points |
---|
1311 | if { $points == "" } { |
---|
1312 | puts stderr "WARNING: bad unstructured grid \"$path\": no <points> found." |
---|
1313 | return 0 |
---|
1314 | } |
---|
1315 | if { $dim != 2 } { |
---|
1316 | puts stderr "WARNING: bad unstructured grid \"$path\": \# of coordinates per point is \"$dim\": does not agree with dimension specified for mesh \"$_dim\"" |
---|
1317 | return 0 |
---|
1318 | } |
---|
1319 | set all [blt::vector create \#auto] |
---|
1320 | set xv [blt::vector create \#auto] |
---|
1321 | set yv [blt::vector create \#auto] |
---|
1322 | $all set $points |
---|
1323 | $all split $xv $yv |
---|
1324 | blt::vector destroy $all |
---|
1325 | } else { |
---|
1326 | puts stderr "WARNING: bad unstructured grid \"$path\": no points specified." |
---|
1327 | return 0 |
---|
1328 | } |
---|
1329 | set zv [blt::vector create \#auto] |
---|
1330 | $zv seq 0 0 [$xv length]; # Make an all zeroes vector. |
---|
1331 | } elseif { $_dim == 3 } { |
---|
1332 | set xcoords [$_xmlobj get $path.unstructured.xcoords] |
---|
1333 | set ycoords [$_xmlobj get $path.unstructured.ycoords] |
---|
1334 | set zcoords [$_xmlobj get $path.unstructured.zcoords] |
---|
1335 | set data [$_xmlobj get $path.unstructured.points] |
---|
1336 | if { $xcoords != "" && $ycoords != "" && $zcoords != "" } { |
---|
1337 | set xv [blt::vector create \#auto] |
---|
1338 | set yv [blt::vector create \#auto] |
---|
1339 | set zv [blt::vector create \#auto] |
---|
1340 | $xv set $xcoords |
---|
1341 | $yv set $ycoords |
---|
1342 | $zv set $zcoords |
---|
1343 | } elseif { $data != "" } { |
---|
1344 | Rappture::ReadPoints $data dim points |
---|
1345 | if { $points == "" } { |
---|
1346 | puts stderr "WARNING: bad unstructured grid \"$path\": no <points> found." |
---|
1347 | return 0 |
---|
1348 | } |
---|
1349 | if { $dim != 3 } { |
---|
1350 | puts stderr "WARNING: bad unstructured grid \"$path\": \# of coordinates per point is \"$dim\": does not agree with dimension specified for mesh \"$_dim\"" |
---|
1351 | return 0 |
---|
1352 | } |
---|
1353 | set all [blt::vector create \#auto] |
---|
1354 | set xv [blt::vector create \#auto] |
---|
1355 | set yv [blt::vector create \#auto] |
---|
1356 | set zv [blt::vector create \#auto] |
---|
1357 | $all set $points |
---|
1358 | $all split $xv $yv $zv |
---|
1359 | blt::vector destroy $all |
---|
1360 | } else { |
---|
1361 | puts stderr "WARNING: bad unstructured grid \"$path\": no points specified." |
---|
1362 | return 0 |
---|
1363 | } |
---|
1364 | } |
---|
1365 | set _numPoints [$xv length] |
---|
1366 | |
---|
1367 | # Step 3: Write the points and cells as vtk data. |
---|
1368 | if { $numCells == 0 } { |
---|
1369 | set result [WritePointCloud $path $xv $yv $zv] |
---|
1370 | } elseif { $type == "cells" } { |
---|
1371 | set cells [$_xmlobj get $path.unstructured.cells] |
---|
1372 | if { $cells == "" } { |
---|
1373 | puts stderr "WARNING: bad unstructured grid \"$path\": no cells found." |
---|
1374 | return 0 |
---|
1375 | } |
---|
1376 | set result [WriteHybridCells $path $xv $yv $zv $cells $celltypes] |
---|
1377 | } else { |
---|
1378 | set cmd "Write[string totitle $type]" |
---|
1379 | set cells [$_xmlobj get $path.unstructured.$type] |
---|
1380 | if { $cells == "" } { |
---|
1381 | puts stderr "WARNING: bad unstructured grid \"$path\": no cells found." |
---|
1382 | return 0 |
---|
1383 | } |
---|
1384 | set result [$cmd $path $xv $yv $zv $cells] |
---|
1385 | } |
---|
1386 | # Clean up. |
---|
1387 | blt::vector destroy $xv $yv $zv |
---|
1388 | return $result |
---|
1389 | } |
---|
1390 | |
---|
1391 | # ---------------------------------------------------------------------- |
---|
1392 | # USAGE: ReadNodesElements <path> |
---|
1393 | # |
---|
1394 | # Used internally to build a mesh representation based on nodes and |
---|
1395 | # elements stored in the XML. |
---|
1396 | # ---------------------------------------------------------------------- |
---|
1397 | itcl::body Rappture::Mesh::ReadNodesElements {path} { |
---|
1398 | set _type "nodeselements" |
---|
1399 | set count 0 |
---|
1400 | |
---|
1401 | # Scan for nodes. Each node represents a vertex. |
---|
1402 | set data {} |
---|
1403 | foreach cname [$_xmlobj children -type node $path] { |
---|
1404 | append data "[$_xmlobj get $path.$cname]\n" |
---|
1405 | } |
---|
1406 | Rappture::ReadPoints $data _dim points |
---|
1407 | if { $_dim == 2 } { |
---|
1408 | set all [blt::vector create \#auto] |
---|
1409 | set xv [blt::vector create \#auto] |
---|
1410 | set yv [blt::vector create \#auto] |
---|
1411 | set zv [blt::vector create \#auto] |
---|
1412 | $all set $points |
---|
1413 | $all split $xv $yv |
---|
1414 | set _numPoints [$xv length] |
---|
1415 | set _limits(x) [$xv limits] |
---|
1416 | set _limits(y) [$yv limits] |
---|
1417 | set _limits(z) [list 0 0] |
---|
1418 | # 2D Dataset. All Z coordinates are 0 |
---|
1419 | $zv seq 0.0 0.0 $_numPoints |
---|
1420 | $all merge $xv $yv $zv |
---|
1421 | set points [$all range 0 end] |
---|
1422 | blt::vector destroy $all $xv $yv $zv |
---|
1423 | } elseif { $_dim == 3 } { |
---|
1424 | set all [blt::vector create \#auto] |
---|
1425 | set xv [blt::vector create \#auto] |
---|
1426 | set yv [blt::vector create \#auto] |
---|
1427 | set zv [blt::vector create \#auto] |
---|
1428 | $all set $points |
---|
1429 | $all split $xv $yv $zv |
---|
1430 | set _numPoints [$xv length] |
---|
1431 | set _limits(x) [$xv limits] |
---|
1432 | set _limits(y) [$yv limits] |
---|
1433 | set _limits(z) [$zv limits] |
---|
1434 | set points [$all range 0 end] |
---|
1435 | blt::vector destroy $all $xv $yv $zv |
---|
1436 | } else { |
---|
1437 | error "bad dimension \"$_dim\" for nodes mesh" |
---|
1438 | } |
---|
1439 | array set node2celltype { |
---|
1440 | 3 5 |
---|
1441 | 4 9 |
---|
1442 | 8 12 |
---|
1443 | 6 13 |
---|
1444 | 5 14 |
---|
1445 | } |
---|
1446 | set count 0 |
---|
1447 | set _numCells 0 |
---|
1448 | set celltypes {} |
---|
1449 | set data {} |
---|
1450 | # Next scan for elements. Each element represents a cell. |
---|
1451 | foreach cname [$_xmlobj children -type element $path] { |
---|
1452 | set nodeList [$_mesh get $cname.nodes] |
---|
1453 | set numNodes [llength $nodeList] |
---|
1454 | if { ![info exists node2celltype($numNodes)] } { |
---|
1455 | puts stderr "WARNING: bad node/element mesh \$path\": unknown number of nodes \"$numNodes\": should be 3, 4, 5, 6, or 8" |
---|
1456 | return 0 |
---|
1457 | } |
---|
1458 | set celltype $node2celltype($numNodes) |
---|
1459 | if { $_dim == 3 && $numNodes == 4 } { |
---|
1460 | # If mesh is 3D, assume a tetrahedron (default is quad) |
---|
1461 | # XXX: Does prophet output tets, and if so what is the node order? |
---|
1462 | set celltype 10 |
---|
1463 | } |
---|
1464 | append celltypes "$celltype\n" |
---|
1465 | if { $celltype == 9 } { |
---|
1466 | # Fix the node order for quad cells |
---|
1467 | # (this converts from PROPHET convention to VTK convention) |
---|
1468 | set newList {} |
---|
1469 | foreach i { 0 1 3 2 } { |
---|
1470 | lappend newList [lindex $nodeList $i] |
---|
1471 | } |
---|
1472 | set nodeList $newList |
---|
1473 | } elseif { $celltype == 12 } { |
---|
1474 | # Fix the node order for hexahedron cells |
---|
1475 | # (this converts from PROPHET convention to VTK convention) |
---|
1476 | set newList {} |
---|
1477 | foreach i { 0 1 3 2 4 5 7 6 } { |
---|
1478 | lappend newList [lindex $nodeList $i] |
---|
1479 | } |
---|
1480 | set nodeList $newList |
---|
1481 | } |
---|
1482 | append data "$numNodes $nodeList\n" |
---|
1483 | incr _numCells |
---|
1484 | incr count $numNodes |
---|
1485 | incr count; # One extra for the VTK celltype id. |
---|
1486 | } |
---|
1487 | |
---|
1488 | append out "DATASET UNSTRUCTURED_GRID\n" |
---|
1489 | append out "POINTS $_numPoints double\n" |
---|
1490 | append out $points |
---|
1491 | append out "\n" |
---|
1492 | append out "CELLS $_numCells $count\n" |
---|
1493 | append out $data |
---|
1494 | append out "CELL_TYPES $_numCells\n" |
---|
1495 | append out $celltypes |
---|
1496 | set _vtkdata $out |
---|
1497 | set _isValid 1 |
---|
1498 | } |
---|
1499 | |
---|
1500 | itcl::body Rappture::Mesh::GetCellType { name } { |
---|
1501 | array set name2type { |
---|
1502 | "vertex" 1 |
---|
1503 | "polyvertex" 2 |
---|
1504 | "line" 3 |
---|
1505 | "polyline" 4 |
---|
1506 | "triangle" 5 |
---|
1507 | "trianglestrip" 6 |
---|
1508 | "polygon" 7 |
---|
1509 | "pixel" 8 |
---|
1510 | "quad" 9 |
---|
1511 | "tetrahedron" 10 |
---|
1512 | "voxel" 11 |
---|
1513 | "hexahedron" 12 |
---|
1514 | "wedge" 13 |
---|
1515 | "pyramid" 14 |
---|
1516 | "pentagonalprism" 15 |
---|
1517 | "hexagonalprism" 16 |
---|
1518 | } |
---|
1519 | if { [info exists name2type($name)] } { |
---|
1520 | return $name2type($name) |
---|
1521 | } |
---|
1522 | if { [string is int $name] == 1 && $name >= 1 && $name <= 16 } { |
---|
1523 | return $name |
---|
1524 | } |
---|
1525 | error "invalid celltype \"$name\"" |
---|
1526 | } |
---|
1527 | |
---|
1528 | itcl::body Rappture::Mesh::GetNumIndices { type } { |
---|
1529 | array set type2indices { |
---|
1530 | 1 1 |
---|
1531 | 2 0 |
---|
1532 | 3 2 |
---|
1533 | 4 0 |
---|
1534 | 5 3 |
---|
1535 | 6 0 |
---|
1536 | 7 0 |
---|
1537 | 8 4 |
---|
1538 | 9 4 |
---|
1539 | 10 4 |
---|
1540 | 11 8 |
---|
1541 | 12 8 |
---|
1542 | 13 6 |
---|
1543 | 14 5 |
---|
1544 | 15 10 |
---|
1545 | 16 12 |
---|
1546 | } |
---|
1547 | if { [info exists type2indices($type)] } { |
---|
1548 | return $type2indices($type) |
---|
1549 | } |
---|
1550 | error "invalid celltype \"$type\"" |
---|
1551 | } |
---|