1 | |
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2 | # ---------------------------------------------------------------------- |
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3 | # COMPONENT: field - extracts data from an XML description of a field |
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4 | # |
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5 | # This object represents one field in an XML description of a device. |
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6 | # It simplifies the process of extracting data vectors that represent |
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7 | # the field. |
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8 | # ====================================================================== |
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9 | # AUTHOR: Michael McLennan, Purdue University |
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10 | # Copyright (c) 2004-2005 Purdue Research Foundation |
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11 | # |
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12 | # See the file "license.terms" for information on usage and |
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13 | # redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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14 | # ====================================================================== |
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15 | package require Itcl |
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16 | package require BLT |
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17 | |
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18 | namespace eval Rappture { # forward declaration } |
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19 | |
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20 | itcl::class Rappture::Field { |
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21 | constructor {xmlobj path} { # defined below } |
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22 | destructor { # defined below } |
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23 | |
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24 | public method components {args} |
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25 | public method mesh {{what -overall}} |
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26 | public method values {{what -overall}} |
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27 | public method blob {{what -overall}} |
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28 | public method limits {axis} |
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29 | public method controls {option args} |
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30 | public method hints {{key ""}} |
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31 | public method style { cname } |
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32 | public method isunirect2d {} |
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33 | public method isunirect3d {} |
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34 | public method extents {{what -overall}} |
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35 | public method flowhints { cname } |
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36 | public method type {} |
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37 | |
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38 | protected method _build {} |
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39 | protected method _getValue {expr} |
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40 | |
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41 | private variable _xmlobj "" ;# ref to XML obj with device data |
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42 | |
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43 | private variable _units "" ;# system of units for this field |
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44 | private variable _limits ;# maps box name => {z0 z1} limits |
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45 | private variable _zmax 0 ;# length of the device |
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46 | |
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47 | private variable _field "" ;# lib obj representing this field |
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48 | private variable _comp2dims ;# maps component name => dimensionality |
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49 | private variable _comp2xy ;# maps component name => x,y vectors |
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50 | private variable _comp2vtk ;# maps component name => vtkFloatArray |
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51 | private variable _comp2vtkstreamlines ;# maps component name => vtkFloatArray |
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52 | private variable _comp2dx ;# maps component name => OpenDX data |
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53 | private variable _comp2unirect2d ;# maps component name => unirect2d obj |
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54 | private variable _comp2unirect3d ;# maps component name => unirect3d obj |
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55 | private variable _comp2style ;# maps component name => style settings |
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56 | private variable _comp2cntls ;# maps component name => x,y control points |
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57 | private variable _comp2extents |
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58 | private variable _type "" |
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59 | private variable _comp2flowhints |
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60 | private common _counter 0 ;# counter for unique vector names |
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61 | } |
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62 | |
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63 | # ---------------------------------------------------------------------- |
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64 | # CONSTRUCTOR |
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65 | # ---------------------------------------------------------------------- |
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66 | itcl::body Rappture::Field::constructor {xmlobj path} { |
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67 | if {![Rappture::library isvalid $xmlobj]} { |
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68 | error "bad value \"$xmlobj\": should be Rappture::library" |
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69 | } |
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70 | set _xmlobj $xmlobj |
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71 | set _field [$xmlobj element -as object $path] |
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72 | set _units [$_field get units] |
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73 | |
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74 | set xunits [$xmlobj get units] |
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75 | if {"" == $xunits || "arbitrary" == $xunits} { |
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76 | set xunits "um" |
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77 | } |
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78 | |
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79 | # determine the overall size of the device |
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80 | set z0 [set z1 0] |
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81 | foreach elem [$_xmlobj children components] { |
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82 | switch -glob -- $elem { |
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83 | box* { |
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84 | if {![regexp {[0-9]$} $elem]} { |
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85 | set elem "${elem}0" |
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86 | } |
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87 | set z0 [$_xmlobj get components.$elem.corner0] |
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88 | set z0 [Rappture::Units::convert $z0 \ |
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89 | -context $xunits -to $xunits -units off] |
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90 | |
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91 | set z1 [$_xmlobj get components.$elem.corner1] |
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92 | set z1 [Rappture::Units::convert $z1 \ |
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93 | -context $xunits -to $xunits -units off] |
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94 | |
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95 | set _limits($elem) [list $z0 $z1] |
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96 | } |
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97 | } |
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98 | } |
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99 | set _zmax $z1 |
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100 | |
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101 | # build up vectors for various components of the field |
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102 | _build |
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103 | } |
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104 | |
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105 | # ---------------------------------------------------------------------- |
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106 | # DESTRUCTOR |
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107 | # ---------------------------------------------------------------------- |
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108 | itcl::body Rappture::Field::destructor {} { |
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109 | itcl::delete object $_field |
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110 | # don't destroy the _xmlobj! we don't own it! |
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111 | |
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112 | foreach name [array names _comp2xy] { |
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113 | eval blt::vector destroy $_comp2xy($name) |
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114 | } |
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115 | foreach name [array names _comp2vtk] { |
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116 | set mobj [lindex $_comp2vtk($name) 0] |
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117 | set class [$mobj info class] |
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118 | ${class}::release $mobj |
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119 | |
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120 | set fobj [lindex $_comp2vtk($name) 1] |
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121 | rename $fobj "" |
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122 | } |
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123 | foreach name [array names _comp2unirect2d] { |
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124 | itcl::delete object $_comp2unirect2d($name) |
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125 | } |
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126 | foreach name [array names _comp2unirect3d] { |
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127 | itcl::delete object $_comp2unirect3d($name) |
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128 | } |
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129 | foreach name [array names _comp2flowhints] { |
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130 | itcl::delete object $_comp2flowhints($name) |
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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 | # USAGE: components ?-name|-dimensions|-style? ?<pattern>? |
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136 | # |
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137 | # Returns a list of names or types for the various components of |
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138 | # this field. If the optional glob-style <pattern> is specified, |
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139 | # then it returns only the components with names matching the pattern. |
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140 | # ---------------------------------------------------------------------- |
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141 | itcl::body Rappture::Field::components {args} { |
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142 | Rappture::getopts args params { |
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143 | flag what -name default |
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144 | flag what -dimensions |
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145 | flag what -style |
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146 | flag what -particles |
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147 | flag what -flow |
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148 | flag what -box |
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149 | } |
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150 | |
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151 | set pattern * |
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152 | if {[llength $args] > 0} { |
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153 | set pattern [lindex $args 0] |
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154 | set args [lrange $args 1 end] |
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155 | } |
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156 | if {[llength $args] > 0} { |
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157 | error "wrong # args: should be \"components ?switches? ?pattern?\"" |
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158 | } |
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159 | |
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160 | set rlist "" |
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161 | |
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162 | # BE CAREFUL: return component names in proper order |
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163 | foreach cname [$_field children -type component] { |
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164 | if {[info exists _comp2dims($cname)] |
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165 | && [string match $pattern $cname]} { |
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166 | |
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167 | switch -- $params(what) { |
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168 | -name { lappend rlist $cname } |
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169 | -dimensions { lappend rlist $_comp2dims($cname) } |
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170 | -style { lappend rlist $_comp2style($cname) } |
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171 | } |
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172 | } |
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173 | } |
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174 | return $rlist |
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175 | } |
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176 | |
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177 | # ---------------------------------------------------------------------- |
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178 | # USAGE: mesh ?<name>? |
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179 | # |
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180 | # Returns a list {xvec yvec} for the specified field component <name>. |
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181 | # If the name is not specified, then it returns the vectors for the |
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182 | # overall field (sum of all components). |
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183 | # ---------------------------------------------------------------------- |
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184 | itcl::body Rappture::Field::mesh {{what -overall}} { |
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185 | if {$what == "-overall" || $what == "component0"} { |
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186 | set what [lindex [components -name] 0] |
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187 | } |
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188 | if {[info exists _comp2xy($what)]} { |
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189 | return [lindex $_comp2xy($what) 0] ;# return xv |
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190 | } |
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191 | if { [info exists _comp2vtkstreamlines($what)] } { |
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192 | error "mesh: not implemented for streamlines" |
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193 | return [$mobj mesh] |
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194 | } |
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195 | if { [info exists _comp2vtk($what)] } { |
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196 | set mobj [lindex $_comp2vtk($what) 0] |
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197 | return [$mobj mesh] |
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198 | } |
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199 | if {[info exists _comp2dx($what)]} { |
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200 | return "" ;# no mesh -- it's embedded in the value data |
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201 | } |
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202 | if {[info exists _comp2unirect2d($what)]} { |
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203 | set mobj [lindex $_comp2unirect2d($what) 0] |
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204 | return [$mobj mesh] |
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205 | } |
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206 | if {[info exists _comp2unirect3d($what)]} { |
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207 | set mobj [lindex $_comp2unirect3d($what) 0] |
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208 | return [$mobj mesh] |
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209 | } |
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210 | error "bad option \"$what\": should be [join [lsort [array names _comp2dims]] {, }]" |
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211 | } |
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212 | |
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213 | # ---------------------------------------------------------------------- |
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214 | # USAGE: values ?<name>? |
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215 | # |
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216 | # Returns a list {xvec yvec} for the specified field component <name>. |
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217 | # If the name is not specified, then it returns the vectors for the |
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218 | # overall field (sum of all components). |
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219 | # ---------------------------------------------------------------------- |
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220 | itcl::body Rappture::Field::values {{what -overall}} { |
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221 | if {$what == "component0"} { |
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222 | set what "component" |
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223 | } |
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224 | if {[info exists _comp2xy($what)]} { |
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225 | return [lindex $_comp2xy($what) 1] ;# return yv |
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226 | } |
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227 | if { [info exists _comp2vtkstreamlines($what)] } { |
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228 | # FIXME: Need to process the vtk file data to pull out the field's |
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229 | # values. |
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230 | error "vtkstreamlines: values not implements" |
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231 | return [lindex $_comp2vtkstreamlines($what) 1] |
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232 | } |
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233 | if { [info exists _comp2vtk($what)] } { |
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234 | return [lindex $_comp2vtk($what) 1] ;# return vtkFloatArray |
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235 | } |
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236 | if {[info exists _comp2dx($what)]} { |
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237 | return $_comp2dx($what) ;# return gzipped, base64-encoded DX data |
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238 | } |
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239 | if {[info exists _comp2unirect2d($what)]} { |
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240 | return [$_comp2unirect2d($what) values] |
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241 | } |
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242 | if {[info exists _comp2unirect3d($what)]} { |
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243 | return [$_comp2unirect3d($what) blob] |
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244 | } |
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245 | error "bad option \"$what\": should be [join [lsort [array names _comp2dims]] {, }]" |
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246 | } |
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247 | |
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248 | # ---------------------------------------------------------------------- |
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249 | # USAGE: blob ?<name>? |
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250 | # |
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251 | # Returns a string representing the blob of data for the mesh and values. |
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252 | # ---------------------------------------------------------------------- |
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253 | itcl::body Rappture::Field::blob {{what -overall}} { |
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254 | if {$what == "component0"} { |
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255 | set what "component" |
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256 | } |
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257 | if {[info exists _comp2xy($what)]} { |
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258 | return "" |
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259 | } |
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260 | if { [info exists _comp2vtk($what)] } { |
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261 | return "" |
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262 | } |
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263 | if { [info exists _comp2vtkstreamlines($what)] } { |
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264 | # Return the contents of the vtk file. |
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265 | return $_comp2vtkstreamlines($what) |
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266 | } |
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267 | if {[info exists _comp2dx($what)]} { |
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268 | return $_comp2dx($what) ;# return gzipped, base64-encoded DX data |
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269 | } |
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270 | if {[info exists _comp2unirect2d($what)]} { |
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271 | return [$_comp2unirect2d($what) blob] |
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272 | } |
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273 | if {[info exists _comp2unirect3d($what)]} { |
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274 | return [$_comp2unirect3d($what) blob] |
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275 | } |
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276 | error "bad option \"$what\": should be [join [lsort [array names _comp2dims]] {, }]" |
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277 | } |
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278 | |
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279 | # ---------------------------------------------------------------------- |
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280 | # USAGE: limits <axis> |
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281 | # |
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282 | # Returns a list {min max} representing the limits for the specified |
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283 | # axis. |
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284 | # ---------------------------------------------------------------------- |
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285 | itcl::body Rappture::Field::limits {which} { |
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286 | set min "" |
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287 | set max "" |
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288 | |
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289 | blt::vector tmp zero |
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290 | foreach comp [array names _comp2dims] { |
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291 | switch -- $_comp2dims($comp) { |
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292 | 1D { |
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293 | switch -- $which { |
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294 | x - xlin { set pos 0; set log 0; set axis xaxis } |
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295 | xlog { set pos 0; set log 1; set axis xaxis } |
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296 | y - ylin - v - vlin { set pos 1; set log 0; set axis yaxis } |
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297 | ylog - vlog { set pos 1; set log 1; set axis yaxis } |
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298 | default { |
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299 | error "bad option \"$which\": should be x, xlin, xlog, y, ylin, ylog, v, vlin, vlog" |
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300 | } |
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301 | } |
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302 | |
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303 | set vname [lindex $_comp2xy($comp) $pos] |
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304 | $vname variable vec |
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305 | |
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306 | if {$log} { |
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307 | # on a log scale, use abs value and ignore 0's |
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308 | $vname dup tmp |
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309 | $vname dup zero |
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310 | zero expr {tmp == 0} ;# find the 0's |
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311 | tmp expr {abs(tmp)} ;# get the abs value |
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312 | tmp expr {tmp + zero*max(tmp)} ;# replace 0's with abs max |
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313 | set vmin [blt::vector expr min(tmp)] |
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314 | set vmax [blt::vector expr max(tmp)] |
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315 | } else { |
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316 | set vmin $vec(min) |
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317 | set vmax $vec(max) |
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318 | } |
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319 | |
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320 | if {"" == $min} { |
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321 | set min $vmin |
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322 | } elseif {$vmin < $min} { |
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323 | set min $vmin |
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324 | } |
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325 | if {"" == $max} { |
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326 | set max $vmax |
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327 | } elseif {$vmax > $max} { |
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328 | set max $vmax |
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329 | } |
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330 | } |
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331 | 2D - 3D { |
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332 | if {[info exists _comp2unirect2d($comp)]} { |
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333 | set limits [$_comp2unirect2d($comp) limits $which] |
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334 | foreach {vmin vmax} $limits break |
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335 | set axis vaxis |
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336 | } elseif {[info exists _comp2unirect3d($comp)]} { |
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337 | set limits [$_comp2unirect3d($comp) limits $which] |
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338 | foreach {vmin vmax} $limits break |
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339 | set axis vaxis |
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340 | } elseif {[info exists _comp2vtk($comp)]} { |
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341 | foreach {xv yv} $_comp2vtk($comp) break |
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342 | switch -- $which { |
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343 | x - xlin - xlog { |
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344 | foreach {vmin vmax} [$xv limits x] break |
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345 | set axis xaxis |
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346 | } |
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347 | y - ylin - ylog { |
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348 | foreach {vmin vmax} [$xv limits y] break |
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349 | set axis yaxis |
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350 | } |
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351 | z - zlin - zlog { |
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352 | foreach {vmin vmax} [$xv limits z] break |
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353 | set axis zaxis |
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354 | } |
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355 | v - vlin - vlog { |
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356 | catch {unset style} |
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357 | array set style $_comp2style($comp) |
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358 | if {[info exists style(-min)] && [info exists style(-max)]} { |
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359 | # This component has its own hard-coded |
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360 | # min/max range. Ignore it for overall limits. |
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361 | set vmin $min |
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362 | set vmax $max |
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363 | } else { |
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364 | foreach {vmin vmax} [$yv GetRange] break |
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365 | } |
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366 | set axis vaxis |
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367 | } |
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368 | default { |
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369 | error "bad option \"$which\": should be x, xlin, xlog, y, ylin, ylog, v, vlin, vlog" |
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370 | } |
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371 | } |
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372 | } else { |
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373 | set vmin 0 ;# HACK ALERT! must be OpenDX data |
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374 | set vmax 1 |
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375 | set axis vaxis |
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376 | } |
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377 | } |
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378 | } |
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379 | if {"" == $min} { |
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380 | set min $vmin |
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381 | } elseif {$vmin < $min} { |
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382 | set min $vmin |
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383 | } |
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384 | if {"" == $max} { |
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385 | set max $vmax |
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386 | } elseif {$vmax > $max} { |
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387 | set max $vmax |
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388 | } |
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389 | } |
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390 | blt::vector destroy tmp zero |
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391 | |
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392 | set val [$_field get $axis.min] |
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393 | if {"" != $val && "" != $min} { |
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394 | if {$val > $min} { |
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395 | # tool specified this min -- don't go any lower |
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396 | set min $val |
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397 | } |
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398 | } |
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399 | |
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400 | set val [$_field get $axis.max] |
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401 | if {"" != $val && "" != $max} { |
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402 | if {$val < $max} { |
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403 | # tool specified this max -- don't go any higher |
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404 | set max $val |
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405 | } |
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406 | } |
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407 | return [list $min $max] |
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408 | } |
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409 | |
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410 | # ---------------------------------------------------------------------- |
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411 | # USAGE: controls get ?<name>? |
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412 | # USAGE: controls validate <path> <value> |
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413 | # USAGE: controls put <path> <value> |
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414 | # |
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415 | # Returns a list {path1 x1 y1 val1 path2 x2 y2 val2 ...} representing |
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416 | # control points for the specified field component <name>. |
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417 | # ---------------------------------------------------------------------- |
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418 | itcl::body Rappture::Field::controls {option args} { |
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419 | switch -- $option { |
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420 | get { |
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421 | set what [lindex $args 0] |
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422 | if {[info exists _comp2cntls($what)]} { |
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423 | return $_comp2cntls($what) |
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424 | } |
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425 | return "" |
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426 | } |
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427 | validate { |
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428 | set path [lindex $args 0] |
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429 | set value [lindex $args 1] |
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430 | set units [$_xmlobj get $path.units] |
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431 | |
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432 | if {"" != $units} { |
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433 | set nv [Rappture::Units::convert \ |
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434 | $value -context $units -to $units -units off] |
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435 | } else { |
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436 | set nv $value |
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437 | } |
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438 | if {![string is double $nv] |
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439 | || [regexp -nocase {^(inf|nan)$} $nv]} { |
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440 | error "Value out of range" |
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441 | } |
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442 | |
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443 | set rawmin [$_xmlobj get $path.min] |
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444 | if {"" != $rawmin} { |
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445 | set minv $rawmin |
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446 | if {"" != $units} { |
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447 | set minv [Rappture::Units::convert \ |
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448 | $minv -context $units -to $units -units off] |
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449 | set nv [Rappture::Units::convert \ |
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450 | $value -context $units -to $units -units off] |
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451 | } |
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452 | # fix for the case when the user tries to |
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453 | # compare values like minv=-500 nv=-0600 |
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454 | set nv [format "%g" $nv] |
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455 | set minv [format "%g" $minv] |
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456 | |
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457 | if {$nv < $minv} { |
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458 | error "Minimum value allowed here is $rawmin" |
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459 | } |
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460 | } |
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461 | |
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462 | set rawmax [$_xmlobj get $path.max] |
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463 | if {"" != $rawmax} { |
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464 | set maxv $rawmax |
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465 | if {"" != $units} { |
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466 | set maxv [Rappture::Units::convert \ |
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467 | $maxv -context $units -to $units -units off] |
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468 | set nv [Rappture::Units::convert \ |
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469 | $value -context $units -to $units -units off] |
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470 | } |
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471 | # fix for the case when the user tries to |
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472 | # compare values like maxv=-500 nv=-0600 |
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473 | set nv [format "%g" $nv] |
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474 | set maxv [format "%g" $maxv] |
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475 | |
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476 | if {$nv > $maxv} { |
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477 | error "Maximum value allowed here is $rawmax" |
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478 | } |
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479 | } |
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480 | |
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481 | return "ok" |
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482 | } |
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483 | put { |
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484 | set path [lindex $args 0] |
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485 | set value [lindex $args 1] |
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486 | $_xmlobj put $path.current $value |
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487 | _build |
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488 | } |
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489 | default { |
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490 | error "bad option \"$option\": should be get or put" |
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491 | } |
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492 | } |
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493 | } |
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494 | |
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495 | # ---------------------------------------------------------------------- |
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496 | # USAGE: hints ?<keyword>? |
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497 | # |
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498 | # Returns a list of key/value pairs for various hints about plotting |
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499 | # this field. If a particular <keyword> is specified, then it returns |
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500 | # the hint for that <keyword>, if it exists. |
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501 | # ---------------------------------------------------------------------- |
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502 | itcl::body Rappture::Field::hints {{keyword ""}} { |
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503 | foreach {key path} { |
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504 | group about.group |
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505 | label about.label |
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506 | color about.color |
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507 | style about.style |
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508 | scale about.scale |
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509 | seeds about.seeds |
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510 | scalars about.scalars |
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511 | vectors about.vectors |
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512 | default about.default |
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513 | units units |
---|
514 | updir updir |
---|
515 | camera camera.position |
---|
516 | type about.type |
---|
517 | } { |
---|
518 | set str [$_field get $path] |
---|
519 | if {"" != $str} { |
---|
520 | set hints($key) $str |
---|
521 | } |
---|
522 | } |
---|
523 | |
---|
524 | # to be compatible with curve objects |
---|
525 | set hints(xlabel) "Position" |
---|
526 | |
---|
527 | if {[info exists hints(group)] && [info exists hints(label)]} { |
---|
528 | # pop-up help for each curve |
---|
529 | set hints(tooltip) $hints(label) |
---|
530 | } |
---|
531 | |
---|
532 | if {$keyword != ""} { |
---|
533 | if {[info exists hints($keyword)]} { |
---|
534 | return $hints($keyword) |
---|
535 | } |
---|
536 | return "" |
---|
537 | } |
---|
538 | return [array get hints] |
---|
539 | } |
---|
540 | |
---|
541 | # ---------------------------------------------------------------------- |
---|
542 | # USAGE: _build |
---|
543 | # |
---|
544 | # Used internally to build up the vector representation for the |
---|
545 | # field when the object is first constructed, or whenever the field |
---|
546 | # data changes. Discards any existing vectors and builds everything |
---|
547 | # from scratch. |
---|
548 | # ---------------------------------------------------------------------- |
---|
549 | itcl::body Rappture::Field::_build {} { |
---|
550 | # discard any existing data |
---|
551 | foreach name [array names _comp2xy] { |
---|
552 | eval blt::vector destroy $_comp2xy($name) |
---|
553 | } |
---|
554 | foreach name [array names _comp2vtk] { |
---|
555 | set mobj [lindex $_comp2vtk($name) 0] |
---|
556 | set class [$mobj info class] |
---|
557 | ${class}::release $mobj |
---|
558 | |
---|
559 | set fobj [lindex $_comp2vtk($name) 1] |
---|
560 | rename $fobj "" |
---|
561 | } |
---|
562 | foreach name [array names _comp2unirect2d] { |
---|
563 | eval itcl::delete object $_comp2unirect2d($name) |
---|
564 | } |
---|
565 | foreach name [array names _comp2unirect3d] { |
---|
566 | eval itcl::delete object $_comp2unirect3d($name) |
---|
567 | } |
---|
568 | catch {unset _comp2xy} |
---|
569 | catch {unset _comp2vtk} |
---|
570 | catch {unset _comp2dx} |
---|
571 | catch {unset _comp2dims} |
---|
572 | catch {unset _comp2style} |
---|
573 | array unset _comp2vtkstreamlines |
---|
574 | array unset _comp2unirect2d |
---|
575 | array unset _comp2unirect3d |
---|
576 | array unset _comp2extents |
---|
577 | array unset _dataobj2type |
---|
578 | # |
---|
579 | # Scan through the components of the field and create |
---|
580 | # vectors for each part. |
---|
581 | # |
---|
582 | foreach cname [$_field children -type component] { |
---|
583 | set type "" |
---|
584 | if { ([$_field element $cname.constant] != "" && |
---|
585 | [$_field element $cname.domain] != "") || |
---|
586 | [$_field element $cname.xy] != ""} { |
---|
587 | set type "1D" |
---|
588 | } elseif {[$_field element $cname.mesh] != "" && |
---|
589 | [$_field element $cname.values] != ""} { |
---|
590 | set type "points-on-mesh" |
---|
591 | } elseif {[$_field element $cname.vtk] != ""} { |
---|
592 | if { [$_field get "about.view"] == "streamlines" } { |
---|
593 | set type "vtkstreamlines" |
---|
594 | } else { |
---|
595 | set type "vtk" |
---|
596 | } |
---|
597 | } elseif {[$_field element $cname.opendx] != ""} { |
---|
598 | set type "opendx" |
---|
599 | } elseif {[$_field element $cname.dx] != ""} { |
---|
600 | set type "dx" |
---|
601 | } |
---|
602 | set _comp2style($cname) "" |
---|
603 | |
---|
604 | # Save the extents of the component |
---|
605 | if { [$_field element $cname.extents] != "" } { |
---|
606 | set extents [$_field get $cname.extents] |
---|
607 | } else { |
---|
608 | set extents 1 |
---|
609 | } |
---|
610 | set _comp2extents($cname) $extents |
---|
611 | set _type $type |
---|
612 | if {$type == "1D"} { |
---|
613 | # |
---|
614 | # 1D data can be represented as 2 BLT vectors, |
---|
615 | # one for x and the other for y. |
---|
616 | # |
---|
617 | set xv "" |
---|
618 | set yv "" |
---|
619 | |
---|
620 | set val [$_field get $cname.constant] |
---|
621 | if {$val != ""} { |
---|
622 | set domain [$_field get $cname.domain] |
---|
623 | if {$domain == "" || ![info exists _limits($domain)]} { |
---|
624 | set z0 0 |
---|
625 | set z1 $_zmax |
---|
626 | } else { |
---|
627 | foreach {z0 z1} $_limits($domain) { break } |
---|
628 | } |
---|
629 | set xv [blt::vector create x$_counter] |
---|
630 | $xv append $z0 $z1 |
---|
631 | |
---|
632 | foreach {val pcomp} [_getValue $val] break |
---|
633 | set yv [blt::vector create y$_counter] |
---|
634 | $yv append $val $val |
---|
635 | |
---|
636 | if {$pcomp != ""} { |
---|
637 | set zm [expr {0.5*($z0+$z1)}] |
---|
638 | set _comp2cntls($cname) \ |
---|
639 | [list $pcomp $zm $val "$val$_units"] |
---|
640 | } |
---|
641 | } else { |
---|
642 | set xydata [$_field get $cname.xy] |
---|
643 | if {"" != $xydata} { |
---|
644 | set xv [blt::vector create x$_counter] |
---|
645 | set yv [blt::vector create y$_counter] |
---|
646 | set tmp [blt::vector create \#auto] |
---|
647 | $tmp set $xydata |
---|
648 | $tmp split $xv $yv |
---|
649 | blt::vector destroy $tmp |
---|
650 | } |
---|
651 | } |
---|
652 | |
---|
653 | if {$xv != "" && $yv != ""} { |
---|
654 | # sort x-coords in increasing order |
---|
655 | $xv sort $yv |
---|
656 | |
---|
657 | set _comp2dims($cname) "1D" |
---|
658 | set _comp2xy($cname) [list $xv $yv] |
---|
659 | incr _counter |
---|
660 | } |
---|
661 | } elseif {$type == "points-on-mesh"} { |
---|
662 | # |
---|
663 | # More complex 2D/3D data is represented by a mesh |
---|
664 | # object and an associated vtkFloatArray for field |
---|
665 | # values. |
---|
666 | # |
---|
667 | set path [$_field get $cname.mesh] |
---|
668 | if {[$_xmlobj element $path] != ""} { |
---|
669 | set element [$_xmlobj element -as type $path] |
---|
670 | if { $element == "unirect2d" } { |
---|
671 | set _comp2dims($cname) "2D" |
---|
672 | set _comp2unirect2d($cname) \ |
---|
673 | [Rappture::Unirect2d \#auto $_xmlobj $_field $cname \ |
---|
674 | $extents] |
---|
675 | set _comp2style($cname) [$_field get $cname.style] |
---|
676 | if {[$_field element $cname.flow] != ""} { |
---|
677 | set _comp2flowhints($cname) \ |
---|
678 | [Rappture::FlowHints ::\#auto $_field $cname $_units] |
---|
679 | } |
---|
680 | incr _counter |
---|
681 | } elseif { $element == "unirect3d" } { |
---|
682 | set _comp2dims($cname) "3D" |
---|
683 | set _comp2unirect3d($cname) \ |
---|
684 | [Rappture::Unirect3d \#auto $_xmlobj $_field $cname \ |
---|
685 | $extents] |
---|
686 | set _comp2style($cname) [$_field get $cname.style] |
---|
687 | if {[$_field element $cname.flow] != ""} { |
---|
688 | set _comp2flowhints($cname) \ |
---|
689 | [Rappture::FlowHints ::\#auto $_field $cname $_units] |
---|
690 | } |
---|
691 | incr _counter |
---|
692 | } elseif { $element == "cloud" || $element == "mesh" } { |
---|
693 | switch -- $element { |
---|
694 | cloud { |
---|
695 | set mobj [Rappture::Cloud::fetch $_xmlobj $path] |
---|
696 | } |
---|
697 | mesh { |
---|
698 | set mobj [Rappture::Mesh::fetch $_xmlobj $path] |
---|
699 | } |
---|
700 | } |
---|
701 | if {[$mobj dimensions] > 1} { |
---|
702 | # |
---|
703 | # 2D/3D data |
---|
704 | # Store cloud/field as components |
---|
705 | # |
---|
706 | set values [$_field get $cname.values] |
---|
707 | set farray [vtkFloatArray ::vals$_counter] |
---|
708 | |
---|
709 | foreach v $values { |
---|
710 | if {"" != $_units} { |
---|
711 | set v [Rappture::Units::convert $v \ |
---|
712 | -context $_units -to $_units -units off] |
---|
713 | } |
---|
714 | $farray InsertNextValue $v |
---|
715 | } |
---|
716 | |
---|
717 | set _comp2dims($cname) "[$mobj dimensions]D" |
---|
718 | set _comp2vtk($cname) [list $mobj $farray] |
---|
719 | set _comp2style($cname) [$_field get $cname.style] |
---|
720 | incr _counter |
---|
721 | } else { |
---|
722 | # |
---|
723 | # OOPS! This is 1D data |
---|
724 | # Forget the cloud/field -- store BLT vectors |
---|
725 | # |
---|
726 | set xv [blt::vector create x$_counter] |
---|
727 | set yv [blt::vector create y$_counter] |
---|
728 | |
---|
729 | set vtkpts [$mobj points] |
---|
730 | set max [$vtkpts GetNumberOfPoints] |
---|
731 | for {set i 0} {$i < $max} {incr i} { |
---|
732 | set xval [lindex [$vtkpts GetPoint $i] 0] |
---|
733 | $xv append $xval |
---|
734 | } |
---|
735 | set class [$mobj info class] |
---|
736 | ${class}::release $mobj |
---|
737 | |
---|
738 | set values [$_field get $cname.values] |
---|
739 | foreach yval $values { |
---|
740 | if {"" != $_units} { |
---|
741 | set yval [Rappture::Units::convert $yval \ |
---|
742 | -context $_units -to $_units -units off] |
---|
743 | } |
---|
744 | $yv append $yval |
---|
745 | } |
---|
746 | |
---|
747 | # sort x-coords in increasing order |
---|
748 | $xv sort $yv |
---|
749 | |
---|
750 | set _comp2dims($cname) "1D" |
---|
751 | set _comp2xy($cname) [list $xv $yv] |
---|
752 | incr _counter |
---|
753 | } |
---|
754 | } |
---|
755 | } else { |
---|
756 | puts "WARNING: can't find mesh $path for field component" |
---|
757 | } |
---|
758 | } elseif {$type == "vtk"} { |
---|
759 | # |
---|
760 | # Extract native vtk data from the XML and use a reader |
---|
761 | # to load it. |
---|
762 | # |
---|
763 | vtkRectilinearGridReader $this-gr |
---|
764 | $this-gr SetInputString [$_field get $cname.vtk] |
---|
765 | |
---|
766 | |
---|
767 | set _comp2dims($cname) "[$mobj dimensions]D" |
---|
768 | set _comp2vtk($cname) [list $mobj $farray] |
---|
769 | set _comp2style($cname) [$_field get $cname.style] |
---|
770 | incr _counter |
---|
771 | } elseif {$type == "vtkstreamlines"} { |
---|
772 | set _comp2dims($cname) "3D" |
---|
773 | # Allow redirects to another element. |
---|
774 | set vtkdata [$_field get $cname.vtk] |
---|
775 | if { ![string match "!*" $vtkdata] } { |
---|
776 | set _comp2vtkstreamlines($cname) $vtkdata |
---|
777 | } else { |
---|
778 | set path [string range $vtkdata 1 end] |
---|
779 | if { [$_xmlobj element $path] == "" } { |
---|
780 | error "bad redirection path \"$path\"" |
---|
781 | } |
---|
782 | puts stderr path=$path |
---|
783 | set element [$_xmlobj element -as type $path] |
---|
784 | if { $element != "vtk" } { |
---|
785 | error "bad path \"$path\": must redirect to a vtk element" |
---|
786 | } |
---|
787 | set _comp2vtkstreamlines($cname) [$_xmlobj get $path] |
---|
788 | } |
---|
789 | set _comp2style($cname) [$_field get $cname.style] |
---|
790 | incr _counter |
---|
791 | } elseif {$type == "vtkstreamlines2"} { |
---|
792 | set _comp2dims($cname) "3D" |
---|
793 | set _comp2vtkstreamlines($cname) [$_field get $cname.vtk] |
---|
794 | set _comp2style($cname) [$_field get $cname.style] |
---|
795 | incr _counter |
---|
796 | } elseif {$type == "dx"} { |
---|
797 | # |
---|
798 | # HACK ALERT! Extract gzipped, base64-encoded OpenDX |
---|
799 | # data. Assume that it's 3D. Pass it straight |
---|
800 | # off to the NanoVis visualizer. |
---|
801 | # |
---|
802 | set _comp2dims($cname) "3D" |
---|
803 | set _comp2dx($cname) [$_field get -decode no $cname.dx] |
---|
804 | set _comp2style($cname) [$_field get $cname.style] |
---|
805 | if {[$_field element $cname.flow] != ""} { |
---|
806 | set _comp2flowhints($cname) \ |
---|
807 | [Rappture::FlowHints ::\#auto $_field $cname $_units] |
---|
808 | } |
---|
809 | incr _counter |
---|
810 | } elseif {$type == "opendx"} { |
---|
811 | # |
---|
812 | # HACK ALERT! Extract gzipped, base64-encoded OpenDX |
---|
813 | # data. Assume that it's 3D. Pass it straight |
---|
814 | # off to the NanoVis visualizer. |
---|
815 | # |
---|
816 | set _comp2dims($cname) "3D" |
---|
817 | set data [$_field get -decode yes $cname.opendx] |
---|
818 | set data "<ODX>$data" |
---|
819 | set data [Rappture::encoding::encode -as zb64 $data] |
---|
820 | set _comp2dx($cname) $data |
---|
821 | set _comp2style($cname) [$_field get $cname.style] |
---|
822 | if {[$_field element $cname.flow] != ""} { |
---|
823 | set _comp2flowhints($cname) \ |
---|
824 | [Rapture::FlowHints ::\#auto $_field $cname $_units] |
---|
825 | } |
---|
826 | incr _counter |
---|
827 | } |
---|
828 | } |
---|
829 | } |
---|
830 | |
---|
831 | # ---------------------------------------------------------------------- |
---|
832 | # USAGE: _getValue <expr> |
---|
833 | # |
---|
834 | # Used internally to get the value for an expression <expr>. Returns |
---|
835 | # a list of the form {val parameterPath}, where val is the numeric |
---|
836 | # value of the expression, and parameterPath is the XML path to the |
---|
837 | # parameter representing the value, or "" if the <expr> does not |
---|
838 | # depend on any parameters. |
---|
839 | # ---------------------------------------------------------------------- |
---|
840 | itcl::body Rappture::Field::_getValue {expr} { |
---|
841 | # |
---|
842 | # First, look for the expression among the <parameter>'s |
---|
843 | # associated with the device. |
---|
844 | # |
---|
845 | set found 0 |
---|
846 | foreach pcomp [$_xmlobj children parameters] { |
---|
847 | set id [$_xmlobj element -as id parameters.$pcomp] |
---|
848 | if {[string equal $id $expr]} { |
---|
849 | set val [$_xmlobj get parameters.$pcomp.current] |
---|
850 | if {"" == $val} { |
---|
851 | set val [$_xmlobj get parameters.$pcomp.default] |
---|
852 | } |
---|
853 | if {"" != $val} { |
---|
854 | set expr $val |
---|
855 | set found 1 |
---|
856 | break |
---|
857 | } |
---|
858 | } |
---|
859 | } |
---|
860 | if {$found} { |
---|
861 | set pcomp "parameters.$pcomp" |
---|
862 | } else { |
---|
863 | set pcomp "" |
---|
864 | } |
---|
865 | |
---|
866 | if {$_units != ""} { |
---|
867 | set expr [Rappture::Units::convert $expr \ |
---|
868 | -context $_units -to $_units -units off] |
---|
869 | } |
---|
870 | |
---|
871 | return [list $expr $pcomp] |
---|
872 | } |
---|
873 | |
---|
874 | # |
---|
875 | # isunirect2d -- |
---|
876 | # |
---|
877 | # Returns if the field is a unirect2d object. |
---|
878 | # |
---|
879 | itcl::body Rappture::Field::isunirect2d { } { |
---|
880 | return [expr [array size _comp2unirect2d] > 0] |
---|
881 | } |
---|
882 | |
---|
883 | # |
---|
884 | # isunirect3d -- |
---|
885 | # |
---|
886 | # Returns if the field is a unirect3d object. |
---|
887 | # |
---|
888 | itcl::body Rappture::Field::isunirect3d { } { |
---|
889 | return [expr [array size _comp2unirect3d] > 0] |
---|
890 | } |
---|
891 | |
---|
892 | # |
---|
893 | # flowhints -- |
---|
894 | # |
---|
895 | # Returns the hints associated with a flow vector field. |
---|
896 | # |
---|
897 | itcl::body Rappture::Field::flowhints { cname } { |
---|
898 | if { [info exists _comp2flowhints($cname)] } { |
---|
899 | return $_comp2flowhints($cname) |
---|
900 | } |
---|
901 | return "" |
---|
902 | } |
---|
903 | |
---|
904 | # |
---|
905 | # style -- |
---|
906 | # |
---|
907 | # Returns the style associated with a component of the field. |
---|
908 | # |
---|
909 | itcl::body Rappture::Field::style { cname } { |
---|
910 | if { [info exists _comp2style($cname)] } { |
---|
911 | return $_comp2style($cname) |
---|
912 | } |
---|
913 | return "" |
---|
914 | } |
---|
915 | |
---|
916 | # |
---|
917 | # type -- |
---|
918 | # |
---|
919 | # Returns the style associated with a component of the field. |
---|
920 | # |
---|
921 | itcl::body Rappture::Field::type {} { |
---|
922 | return $_type |
---|
923 | } |
---|
924 | |
---|
925 | # |
---|
926 | # extents -- |
---|
927 | # |
---|
928 | # Returns if the field is a unirect2d object. |
---|
929 | # |
---|
930 | itcl::body Rappture::Field::extents {{what -overall}} { |
---|
931 | if {$what == "-overall" } { |
---|
932 | set max 0 |
---|
933 | foreach cname [$_field children -type component] { |
---|
934 | if { ![info exists _comp2unirect3d($cname)] && |
---|
935 | ![info exists _comp2extents($cname)] } { |
---|
936 | continue |
---|
937 | } |
---|
938 | set value $_comp2extents($cname) |
---|
939 | if { $max < $value } { |
---|
940 | set max $value |
---|
941 | } |
---|
942 | } |
---|
943 | return $max |
---|
944 | } |
---|
945 | if { $what == "component0"} { |
---|
946 | set what [lindex [components -name] 0] |
---|
947 | } |
---|
948 | return $_comp2extents($what) |
---|
949 | } |
---|