[1] | 1 | # ---------------------------------------------------------------------- |
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| 2 | # COMPONENT: field - extracts data from an XML description of a field |
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| 3 | # |
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| 4 | # This object represents one field in an XML description of a device. |
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| 5 | # It simplifies the process of extracting data vectors that represent |
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| 6 | # the field. |
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| 7 | # ====================================================================== |
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| 8 | # AUTHOR: Michael McLennan, Purdue University |
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[115] | 9 | # Copyright (c) 2004-2005 Purdue Research Foundation |
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| 10 | # |
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| 11 | # See the file "license.terms" for information on usage and |
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| 12 | # redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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[1] | 13 | # ====================================================================== |
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| 14 | package require Itcl |
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| 15 | package require BLT |
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| 16 | |
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| 17 | namespace eval Rappture { # forward declaration } |
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| 18 | |
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| 19 | itcl::class Rappture::Field { |
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[11] | 20 | constructor {xmlobj path} { # defined below } |
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[1] | 21 | destructor { # defined below } |
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| 22 | |
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[11] | 23 | public method components {args} |
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| 24 | public method mesh {{what -overall}} |
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| 25 | public method values {{what -overall}} |
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| 26 | public method limits {axis} |
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[1] | 27 | public method controls {option args} |
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| 28 | public method hints {{key ""}} |
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| 29 | |
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| 30 | protected method _build {} |
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[11] | 31 | protected method _getValue {expr} |
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[1] | 32 | |
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[11] | 33 | private variable _xmlobj "" ;# ref to XML obj with device data |
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[1] | 34 | |
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| 35 | private variable _units "" ;# system of units for this field |
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[11] | 36 | private variable _limits ;# maps box name => {z0 z1} limits |
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[1] | 37 | private variable _zmax 0 ;# length of the device |
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| 38 | |
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| 39 | private variable _field "" ;# lib obj representing this field |
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[11] | 40 | private variable _comp2dims ;# maps component name => dimensionality |
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| 41 | private variable _comp2xy ;# maps component name => x,y vectors |
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| 42 | private variable _comp2vtk ;# maps component name => vtkFloatArray |
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[447] | 43 | private variable _comp2dx ;# maps component name => OpenDX data |
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[136] | 44 | private variable _comp2style ;# maps component name => style settings |
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[1] | 45 | private variable _comp2cntls ;# maps component name => x,y control points |
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| 46 | |
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| 47 | private common _counter 0 ;# counter for unique vector names |
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| 48 | } |
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| 49 | |
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| 50 | # ---------------------------------------------------------------------- |
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| 51 | # CONSTRUCTOR |
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| 52 | # ---------------------------------------------------------------------- |
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[11] | 53 | itcl::body Rappture::Field::constructor {xmlobj path} { |
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| 54 | if {![Rappture::library isvalid $xmlobj]} { |
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| 55 | error "bad value \"$xmlobj\": should be Rappture::library" |
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[1] | 56 | } |
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[11] | 57 | set _xmlobj $xmlobj |
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| 58 | set _field [$xmlobj element -as object $path] |
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[1] | 59 | set _units [$_field get units] |
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| 60 | |
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[87] | 61 | set xunits [$xmlobj get units] |
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| 62 | if {"" == $xunits || "arbitrary" == $xunits} { |
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| 63 | set xunits "um" |
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| 64 | } |
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| 65 | |
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[1] | 66 | # determine the overall size of the device |
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| 67 | set z0 [set z1 0] |
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[11] | 68 | foreach elem [$_xmlobj children components] { |
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[1] | 69 | switch -glob -- $elem { |
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[11] | 70 | box* { |
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[1] | 71 | if {![regexp {[0-9]$} $elem]} { |
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| 72 | set elem "${elem}0" |
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| 73 | } |
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[11] | 74 | set z0 [$_xmlobj get components.$elem.corner0] |
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| 75 | set z0 [Rappture::Units::convert $z0 \ |
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[87] | 76 | -context $xunits -to $xunits -units off] |
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[11] | 77 | |
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| 78 | set z1 [$_xmlobj get components.$elem.corner1] |
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| 79 | set z1 [Rappture::Units::convert $z1 \ |
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[87] | 80 | -context $xunits -to $xunits -units off] |
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[11] | 81 | |
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[1] | 82 | set _limits($elem) [list $z0 $z1] |
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| 83 | } |
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| 84 | } |
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| 85 | } |
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| 86 | set _zmax $z1 |
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| 87 | |
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| 88 | # build up vectors for various components of the field |
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| 89 | _build |
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| 90 | } |
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| 91 | |
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| 92 | # ---------------------------------------------------------------------- |
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| 93 | # DESTRUCTOR |
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| 94 | # ---------------------------------------------------------------------- |
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| 95 | itcl::body Rappture::Field::destructor {} { |
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| 96 | itcl::delete object $_field |
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[11] | 97 | # don't destroy the _xmlobj! we don't own it! |
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[1] | 98 | |
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[11] | 99 | foreach name [array names _comp2xy] { |
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| 100 | eval blt::vector destroy $_comp2xy($name) |
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[1] | 101 | } |
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[11] | 102 | foreach name [array names _comp2vtk] { |
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[17] | 103 | set mobj [lindex $_comp2vtk($name) 0] |
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| 104 | set class [$mobj info class] |
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| 105 | ${class}::release $mobj |
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[11] | 106 | |
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| 107 | set fobj [lindex $_comp2vtk($name) 1] |
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| 108 | rename $fobj "" |
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| 109 | } |
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[1] | 110 | } |
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| 111 | |
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| 112 | # ---------------------------------------------------------------------- |
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[136] | 113 | # USAGE: components ?-name|-dimensions|-style? ?<pattern>? |
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[1] | 114 | # |
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[11] | 115 | # Returns a list of names or types for the various components of |
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| 116 | # this field. If the optional glob-style <pattern> is specified, |
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| 117 | # then it returns only the components with names matching the pattern. |
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[1] | 118 | # ---------------------------------------------------------------------- |
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[11] | 119 | itcl::body Rappture::Field::components {args} { |
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| 120 | Rappture::getopts args params { |
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| 121 | flag what -name default |
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| 122 | flag what -dimensions |
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[136] | 123 | flag what -style |
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[11] | 124 | } |
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| 125 | |
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| 126 | set pattern * |
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| 127 | if {[llength $args] > 0} { |
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| 128 | set pattern [lindex $args 0] |
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| 129 | set args [lrange $args 1 end] |
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| 130 | } |
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| 131 | if {[llength $args] > 0} { |
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| 132 | error "wrong # args: should be \"components ?switches? ?pattern?\"" |
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| 133 | } |
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| 134 | |
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[1] | 135 | set rlist "" |
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[519] | 136 | |
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| 137 | # BE CAREFUL: return component names in proper order |
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| 138 | foreach cname [$_field children -type component] { |
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| 139 | if {[info exists _comp2dims($cname)] |
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| 140 | && [string match $pattern $cname]} { |
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| 141 | |
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| 142 | switch -- $params(what) { |
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| 143 | -name { lappend rlist $cname } |
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| 144 | -dimensions { lappend rlist $_comp2dims($cname) } |
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| 145 | -style { lappend rlist $_comp2style($cname) } |
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| 146 | } |
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[1] | 147 | } |
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| 148 | } |
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| 149 | return $rlist |
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| 150 | } |
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| 151 | |
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| 152 | # ---------------------------------------------------------------------- |
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[11] | 153 | # USAGE: mesh ?<name>? |
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[1] | 154 | # |
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| 155 | # Returns a list {xvec yvec} for the specified field component <name>. |
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| 156 | # If the name is not specified, then it returns the vectors for the |
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| 157 | # overall field (sum of all components). |
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| 158 | # ---------------------------------------------------------------------- |
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[11] | 159 | itcl::body Rappture::Field::mesh {{what -overall}} { |
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[460] | 160 | if {$what == "-overall" || $what == "component0"} { |
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[519] | 161 | set what [lindex [components -name] 0] |
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[9] | 162 | } |
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[11] | 163 | if {[info exists _comp2xy($what)]} { |
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| 164 | return [lindex $_comp2xy($what) 0] ;# return xv |
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[1] | 165 | } |
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[11] | 166 | if {[info exists _comp2vtk($what)]} { |
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[17] | 167 | set mobj [lindex $_comp2vtk($what) 0] |
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| 168 | return [$mobj mesh] |
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[11] | 169 | } |
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[447] | 170 | if {[info exists _comp2dx($what)]} { |
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| 171 | return "" ;# no mesh -- it's embedded in the value data |
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| 172 | } |
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[11] | 173 | error "bad option \"$what\": should be [join [lsort [array names _comp2dims]] {, }]" |
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[1] | 174 | } |
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| 175 | |
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| 176 | # ---------------------------------------------------------------------- |
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[11] | 177 | # USAGE: values ?<name>? |
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| 178 | # |
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| 179 | # Returns a list {xvec yvec} for the specified field component <name>. |
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| 180 | # If the name is not specified, then it returns the vectors for the |
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| 181 | # overall field (sum of all components). |
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| 182 | # ---------------------------------------------------------------------- |
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| 183 | itcl::body Rappture::Field::values {{what -overall}} { |
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| 184 | if {$what == "component0"} { |
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| 185 | set what "component" |
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| 186 | } |
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| 187 | if {[info exists _comp2xy($what)]} { |
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| 188 | return [lindex $_comp2xy($what) 1] ;# return yv |
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| 189 | } |
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| 190 | if {[info exists _comp2vtk($what)]} { |
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| 191 | return [lindex $_comp2vtk($what) 1] ;# return vtkFloatArray |
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| 192 | } |
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[447] | 193 | if {[info exists _comp2dx($what)]} { |
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| 194 | return $_comp2dx($what) ;# return gzipped, base64-encoded DX data |
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| 195 | } |
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[11] | 196 | error "bad option \"$what\": should be [join [lsort [array names _comp2dims]] {, }]" |
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| 197 | } |
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| 198 | |
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| 199 | # ---------------------------------------------------------------------- |
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| 200 | # USAGE: limits <axis> |
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| 201 | # |
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| 202 | # Returns a list {min max} representing the limits for the specified |
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| 203 | # axis. |
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| 204 | # ---------------------------------------------------------------------- |
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[64] | 205 | itcl::body Rappture::Field::limits {which} { |
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| 206 | set min "" |
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| 207 | set max "" |
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| 208 | |
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| 209 | blt::vector create tmp zero |
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[11] | 210 | foreach comp [array names _comp2dims] { |
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| 211 | switch -- $_comp2dims($comp) { |
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| 212 | 1D { |
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[64] | 213 | switch -- $which { |
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| 214 | x - xlin { set pos 0; set log 0; set axis xaxis } |
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| 215 | xlog { set pos 0; set log 1; set axis xaxis } |
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| 216 | y - ylin - v - vlin { set pos 1; set log 0; set axis yaxis } |
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| 217 | ylog - vlog { set pos 1; set log 1; set axis yaxis } |
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| 218 | default { |
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| 219 | error "bad option \"$which\": should be x, xlin, xlog, y, ylin, ylog, v, vlin, vlog" |
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| 220 | } |
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| 221 | } |
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[11] | 222 | |
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[64] | 223 | set vname [lindex $_comp2xy($comp) $pos] |
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| 224 | $vname variable vec |
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[11] | 225 | |
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[64] | 226 | if {$log} { |
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| 227 | # on a log scale, use abs value and ignore 0's |
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| 228 | $vname dup tmp |
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| 229 | $vname dup zero |
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| 230 | zero expr {tmp == 0} ;# find the 0's |
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| 231 | tmp expr {abs(tmp)} ;# get the abs value |
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| 232 | tmp expr {tmp + zero*max(tmp)} ;# replace 0's with abs max |
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| 233 | set vmin [blt::vector expr min(tmp)] |
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| 234 | set vmax [blt::vector expr max(tmp)] |
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| 235 | } else { |
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| 236 | set vmin $vec(min) |
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| 237 | set vmax $vec(max) |
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| 238 | } |
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[16] | 239 | |
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[64] | 240 | if {"" == $min} { |
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| 241 | set min $vmin |
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| 242 | } elseif {$vmin < $min} { |
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| 243 | set min $vmin |
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| 244 | } |
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| 245 | if {"" == $max} { |
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| 246 | set max $vmax |
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| 247 | } elseif {$vmax > $max} { |
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| 248 | set max $vmax |
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| 249 | } |
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[11] | 250 | } |
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| 251 | 2D - 3D { |
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[638] | 252 | if {[info exists _comp2vtk($comp)]} { |
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[447] | 253 | foreach {xv yv} $_comp2vtk($comp) break |
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| 254 | switch -- $which { |
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| 255 | x - xlin - xlog { |
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| 256 | foreach {vmin vmax} [$xv limits x] break |
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| 257 | set axis xaxis |
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[136] | 258 | } |
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[447] | 259 | y - ylin - ylog { |
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| 260 | foreach {vmin vmax} [$xv limits y] break |
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| 261 | set axis yaxis |
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| 262 | } |
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| 263 | z - zlin - zlog { |
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| 264 | foreach {vmin vmax} [$xv limits z] break |
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| 265 | set axis zaxis |
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| 266 | } |
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| 267 | v - vlin - vlog { |
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| 268 | catch {unset style} |
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| 269 | array set style $_comp2style($comp) |
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| 270 | if {[info exists style(-min)] && [info exists style(-max)]} { |
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| 271 | # This component has its own hard-coded |
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| 272 | # min/max range. Ignore it for overall limits. |
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| 273 | set vmin $min |
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| 274 | set vmax $max |
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| 275 | } else { |
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| 276 | foreach {vmin vmax} [$yv GetRange] break |
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| 277 | } |
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| 278 | set axis vaxis |
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| 279 | } |
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| 280 | default { |
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| 281 | error "bad option \"$which\": should be x, xlin, xlog, y, ylin, ylog, v, vlin, vlog" |
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| 282 | } |
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[64] | 283 | } |
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[447] | 284 | } else { |
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| 285 | set vmin 0 ;# HACK ALERT! must be OpenDX data |
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| 286 | set vmax 1 |
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| 287 | set axis vaxis |
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[64] | 288 | } |
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[11] | 289 | } |
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| 290 | } |
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[64] | 291 | if {"" == $min} { |
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| 292 | set min $vmin |
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| 293 | } elseif {$vmin < $min} { |
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| 294 | set min $vmin |
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[11] | 295 | } |
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[64] | 296 | if {"" == $max} { |
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| 297 | set max $vmax |
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| 298 | } elseif {$vmax > $max} { |
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| 299 | set max $vmax |
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[11] | 300 | } |
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| 301 | } |
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[64] | 302 | blt::vector destroy tmp zero |
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| 303 | |
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| 304 | set val [$_field get $axis.min] |
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| 305 | if {"" != $val && "" != $min} { |
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| 306 | if {$val > $min} { |
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| 307 | # tool specified this min -- don't go any lower |
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| 308 | set min $val |
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| 309 | } |
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| 310 | } |
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| 311 | |
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| 312 | set val [$_field get $axis.max] |
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| 313 | if {"" != $val && "" != $max} { |
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| 314 | if {$val < $max} { |
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| 315 | # tool specified this max -- don't go any higher |
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| 316 | set max $val |
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| 317 | } |
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| 318 | } |
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| 319 | |
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| 320 | return [list $min $max] |
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[11] | 321 | } |
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| 322 | |
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| 323 | # ---------------------------------------------------------------------- |
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[1] | 324 | # USAGE: controls get ?<name>? |
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[729] | 325 | # USAGE: controls validate <path> <value> |
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[1] | 326 | # USAGE: controls put <path> <value> |
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| 327 | # |
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| 328 | # Returns a list {path1 x1 y1 val1 path2 x2 y2 val2 ...} representing |
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| 329 | # control points for the specified field component <name>. |
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| 330 | # ---------------------------------------------------------------------- |
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| 331 | itcl::body Rappture::Field::controls {option args} { |
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| 332 | switch -- $option { |
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| 333 | get { |
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| 334 | set what [lindex $args 0] |
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| 335 | if {[info exists _comp2cntls($what)]} { |
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| 336 | return $_comp2cntls($what) |
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| 337 | } |
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[11] | 338 | return "" |
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[1] | 339 | } |
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[729] | 340 | validate { |
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| 341 | set path [lindex $args 0] |
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| 342 | set value [lindex $args 1] |
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| 343 | set units [$_xmlobj get $path.units] |
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| 344 | |
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| 345 | if {"" != $units} { |
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| 346 | set nv [Rappture::Units::convert \ |
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| 347 | $value -context $units -to $units -units off] |
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| 348 | } else { |
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| 349 | set nv $value |
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| 350 | } |
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[738] | 351 | if {![string is double $nv] |
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[730] | 352 | || [regexp -nocase {^(inf|nan)$} $nv]} { |
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[729] | 353 | error "Value out of range" |
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| 354 | } |
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| 355 | |
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| 356 | set rawmin [$_xmlobj get $path.min] |
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| 357 | if {"" != $rawmin} { |
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| 358 | set minv $rawmin |
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| 359 | if {"" != $units} { |
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| 360 | set minv [Rappture::Units::convert \ |
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| 361 | $minv -context $units -to $units -units off] |
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| 362 | set nv [Rappture::Units::convert \ |
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| 363 | $value -context $units -to $units -units off] |
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| 364 | } |
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| 365 | # fix for the case when the user tries to |
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| 366 | # compare values like minv=-500 nv=-0600 |
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| 367 | set nv [format "%g" $nv] |
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| 368 | set minv [format "%g" $minv] |
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| 369 | |
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| 370 | if {$nv < $minv} { |
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| 371 | error "Minimum value allowed here is $rawmin" |
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| 372 | } |
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| 373 | } |
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| 374 | |
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| 375 | set rawmax [$_xmlobj get $path.max] |
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| 376 | if {"" != $rawmax} { |
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| 377 | set maxv $rawmax |
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| 378 | if {"" != $units} { |
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| 379 | set maxv [Rappture::Units::convert \ |
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| 380 | $maxv -context $units -to $units -units off] |
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| 381 | set nv [Rappture::Units::convert \ |
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| 382 | $value -context $units -to $units -units off] |
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| 383 | } |
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| 384 | # fix for the case when the user tries to |
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| 385 | # compare values like maxv=-500 nv=-0600 |
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| 386 | set nv [format "%g" $nv] |
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| 387 | set maxv [format "%g" $maxv] |
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| 388 | |
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| 389 | if {$nv > $maxv} { |
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| 390 | error "Maximum value allowed here is $rawmax" |
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| 391 | } |
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| 392 | } |
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| 393 | |
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| 394 | return "ok" |
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| 395 | } |
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[1] | 396 | put { |
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| 397 | set path [lindex $args 0] |
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| 398 | set value [lindex $args 1] |
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[11] | 399 | $_xmlobj put $path.current $value |
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[1] | 400 | _build |
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| 401 | } |
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| 402 | default { |
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| 403 | error "bad option \"$option\": should be get or put" |
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| 404 | } |
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| 405 | } |
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| 406 | } |
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| 407 | |
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| 408 | # ---------------------------------------------------------------------- |
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| 409 | # USAGE: hints ?<keyword>? |
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| 410 | # |
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| 411 | # Returns a list of key/value pairs for various hints about plotting |
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| 412 | # this field. If a particular <keyword> is specified, then it returns |
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| 413 | # the hint for that <keyword>, if it exists. |
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| 414 | # ---------------------------------------------------------------------- |
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| 415 | itcl::body Rappture::Field::hints {{keyword ""}} { |
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[13] | 416 | foreach {key path} { |
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| 417 | group about.group |
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| 418 | label about.label |
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| 419 | color about.color |
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| 420 | style about.style |
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| 421 | scale about.scale |
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| 422 | units units |
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[459] | 423 | updir updir |
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[13] | 424 | } { |
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| 425 | set str [$_field get $path] |
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[1] | 426 | if {"" != $str} { |
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| 427 | set hints($key) $str |
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| 428 | } |
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| 429 | } |
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| 430 | |
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[14] | 431 | # to be compatible with curve objects |
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| 432 | set hints(xlabel) "Position" |
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| 433 | |
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[13] | 434 | if {[info exists hints(group)] && [info exists hints(label)]} { |
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| 435 | # pop-up help for each curve |
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| 436 | set hints(tooltip) $hints(label) |
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| 437 | } |
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| 438 | |
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[1] | 439 | if {$keyword != ""} { |
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| 440 | if {[info exists hints($keyword)]} { |
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| 441 | return $hints($keyword) |
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| 442 | } |
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| 443 | return "" |
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| 444 | } |
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| 445 | return [array get hints] |
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| 446 | } |
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| 447 | |
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| 448 | # ---------------------------------------------------------------------- |
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| 449 | # USAGE: _build |
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| 450 | # |
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| 451 | # Used internally to build up the vector representation for the |
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| 452 | # field when the object is first constructed, or whenever the field |
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| 453 | # data changes. Discards any existing vectors and builds everything |
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| 454 | # from scratch. |
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| 455 | # ---------------------------------------------------------------------- |
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| 456 | itcl::body Rappture::Field::_build {} { |
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| 457 | # discard any existing data |
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[11] | 458 | foreach name [array names _comp2xy] { |
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| 459 | eval blt::vector destroy $_comp2xy($name) |
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[1] | 460 | } |
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[11] | 461 | foreach name [array names _comp2vtk] { |
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[17] | 462 | set mobj [lindex $_comp2vtk($name) 0] |
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| 463 | set class [$mobj info class] |
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| 464 | ${class}::release $mobj |
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[1] | 465 | |
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[11] | 466 | set fobj [lindex $_comp2vtk($name) 1] |
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| 467 | rename $fobj "" |
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| 468 | } |
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| 469 | catch {unset _comp2xy} |
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| 470 | catch {unset _comp2vtk} |
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[447] | 471 | catch {unset _comp2dx} |
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[11] | 472 | catch {unset _comp2dims} |
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[136] | 473 | catch {unset _comp2style} |
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[11] | 474 | |
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[1] | 475 | # |
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| 476 | # Scan through the components of the field and create |
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| 477 | # vectors for each part. |
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| 478 | # |
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[6] | 479 | foreach cname [$_field children -type component] { |
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[11] | 480 | set type "" |
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| 481 | if {( [$_field element $cname.constant] != "" |
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| 482 | && [$_field element $cname.domain] != "" ) |
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| 483 | || [$_field element $cname.xy] != ""} { |
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| 484 | set type "1D" |
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| 485 | } elseif {[$_field element $cname.mesh] != "" |
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| 486 | && [$_field element $cname.values] != ""} { |
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| 487 | set type "points-on-mesh" |
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[136] | 488 | } elseif {[$_field element $cname.vtk] != ""} { |
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| 489 | set type "vtk" |
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[447] | 490 | } elseif {[$_field element $cname.dx] != ""} { |
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| 491 | set type "dx" |
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[11] | 492 | } |
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[1] | 493 | |
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[136] | 494 | set _comp2style($cname) "" |
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| 495 | |
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[11] | 496 | if {$type == "1D"} { |
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| 497 | # |
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| 498 | # 1D data can be represented as 2 BLT vectors, |
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| 499 | # one for x and the other for y. |
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| 500 | # |
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| 501 | set xv "" |
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| 502 | set yv "" |
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| 503 | |
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| 504 | set val [$_field get $cname.constant] |
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| 505 | if {$val != ""} { |
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| 506 | set domain [$_field get $cname.domain] |
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| 507 | if {$domain == "" || ![info exists _limits($domain)]} { |
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| 508 | set z0 0 |
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| 509 | set z1 $_zmax |
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| 510 | } else { |
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| 511 | foreach {z0 z1} $_limits($domain) { break } |
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| 512 | } |
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| 513 | set xv [blt::vector create x$_counter] |
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| 514 | $xv append $z0 $z1 |
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| 515 | |
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| 516 | foreach {val pcomp} [_getValue $val] break |
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| 517 | set yv [blt::vector create y$_counter] |
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| 518 | $yv append $val $val |
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| 519 | |
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| 520 | if {$pcomp != ""} { |
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| 521 | set zm [expr {0.5*($z0+$z1)}] |
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| 522 | set _comp2cntls($cname) \ |
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| 523 | [list $pcomp $zm $val "$val$_units"] |
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| 524 | } |
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[1] | 525 | } else { |
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[11] | 526 | set xydata [$_field get $cname.xy] |
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| 527 | if {"" != $xydata} { |
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| 528 | set xv [blt::vector create x$_counter] |
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| 529 | set yv [blt::vector create y$_counter] |
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| 530 | |
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| 531 | foreach line [split $xydata \n] { |
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| 532 | if {[scan $line {%g %g} xval yval] == 2} { |
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| 533 | $xv append $xval |
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| 534 | $yv append $yval |
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| 535 | } |
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| 536 | } |
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| 537 | } |
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[1] | 538 | } |
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| 539 | |
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[11] | 540 | if {$xv != "" && $yv != ""} { |
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[13] | 541 | # sort x-coords in increasing order |
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| 542 | $xv sort $yv |
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| 543 | |
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[11] | 544 | set _comp2dims($cname) "1D" |
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| 545 | set _comp2xy($cname) [list $xv $yv] |
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| 546 | incr _counter |
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[1] | 547 | } |
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[11] | 548 | } elseif {$type == "points-on-mesh"} { |
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| 549 | # |
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| 550 | # More complex 2D/3D data is represented by a mesh |
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| 551 | # object and an associated vtkFloatArray for field |
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| 552 | # values. |
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| 553 | # |
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| 554 | set path [$_field get $cname.mesh] |
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| 555 | if {[$_xmlobj element $path] != ""} { |
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[17] | 556 | switch -- [$_xmlobj element -as type $path] { |
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| 557 | cloud { |
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| 558 | set mobj [Rappture::Cloud::fetch $_xmlobj $path] |
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| 559 | } |
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| 560 | mesh { |
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| 561 | set mobj [Rappture::Mesh::fetch $_xmlobj $path] |
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| 562 | } |
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| 563 | } |
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| 564 | |
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| 565 | if {[$mobj dimensions] > 1} { |
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[13] | 566 | # |
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| 567 | # 2D/3D data |
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| 568 | # Store cloud/field as components |
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| 569 | # |
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| 570 | set values [$_field get $cname.values] |
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| 571 | set farray [vtkFloatArray ::vals$_counter] |
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[1] | 572 | |
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[13] | 573 | foreach v $values { |
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| 574 | if {"" != $_units} { |
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| 575 | set v [Rappture::Units::convert $v \ |
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| 576 | -context $_units -to $_units -units off] |
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| 577 | } |
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| 578 | $farray InsertNextValue $v |
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[1] | 579 | } |
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[13] | 580 | |
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[17] | 581 | set _comp2dims($cname) "[$mobj dimensions]D" |
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| 582 | set _comp2vtk($cname) [list $mobj $farray] |
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[136] | 583 | set _comp2style($cname) [$_field get $cname.style] |
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[13] | 584 | incr _counter |
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| 585 | } else { |
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| 586 | # |
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| 587 | # OOPS! This is 1D data |
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| 588 | # Forget the cloud/field -- store BLT vectors |
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| 589 | # |
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| 590 | set xv [blt::vector create x$_counter] |
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| 591 | set yv [blt::vector create y$_counter] |
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| 592 | |
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[17] | 593 | set vtkpts [$mobj points] |
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[13] | 594 | set max [$vtkpts GetNumberOfPoints] |
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| 595 | for {set i 0} {$i < $max} {incr i} { |
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| 596 | set xval [lindex [$vtkpts GetPoint $i] 0] |
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| 597 | $xv append $xval |
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| 598 | } |
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[17] | 599 | set class [$mobj info class] |
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| 600 | ${class}::release $mobj |
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[13] | 601 | |
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| 602 | set values [$_field get $cname.values] |
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| 603 | foreach yval $values { |
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| 604 | if {"" != $_units} { |
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| 605 | set yval [Rappture::Units::convert $yval \ |
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| 606 | -context $_units -to $_units -units off] |
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| 607 | } |
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| 608 | $yv append $yval |
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| 609 | } |
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| 610 | |
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| 611 | # sort x-coords in increasing order |
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| 612 | $xv sort $yv |
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| 613 | |
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| 614 | set _comp2dims($cname) "1D" |
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| 615 | set _comp2xy($cname) [list $xv $yv] |
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| 616 | incr _counter |
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[1] | 617 | } |
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[11] | 618 | } else { |
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| 619 | puts "WARNING: can't find mesh $path for field component" |
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[1] | 620 | } |
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[136] | 621 | } elseif {$type == "vtk"} { |
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| 622 | # |
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| 623 | # Extract native vtk data from the XML and use a reader |
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| 624 | # to load it. |
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| 625 | # |
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| 626 | vtkRectilinearGridReader $this-gr |
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| 627 | $this-gr SetInputString [$_field get $cname.vtk] |
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| 628 | |
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| 629 | |
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| 630 | set _comp2dims($cname) "[$mobj dimensions]D" |
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| 631 | set _comp2vtk($cname) [list $mobj $farray] |
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| 632 | set _comp2style($cname) [$_field get $cname.style] |
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| 633 | incr _counter |
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[447] | 634 | } elseif {$type == "dx"} { |
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| 635 | # |
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| 636 | # HACK ALERT! Extract gzipped, base64-encoded OpenDX |
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| 637 | # data. Assume that it's 3D. Pass it straight |
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| 638 | # off to the NanoVis visualizer. |
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| 639 | # |
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| 640 | set _comp2dims($cname) "3D" |
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| 641 | set _comp2dx($cname) [$_field get $cname.dx] |
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| 642 | set _comp2style($cname) [$_field get $cname.style] |
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| 643 | incr _counter |
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[1] | 644 | } |
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[11] | 645 | } |
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| 646 | } |
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[1] | 647 | |
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[11] | 648 | # ---------------------------------------------------------------------- |
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| 649 | # USAGE: _getValue <expr> |
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| 650 | # |
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| 651 | # Used internally to get the value for an expression <expr>. Returns |
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| 652 | # a list of the form {val parameterPath}, where val is the numeric |
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| 653 | # value of the expression, and parameterPath is the XML path to the |
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| 654 | # parameter representing the value, or "" if the <expr> does not |
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| 655 | # depend on any parameters. |
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| 656 | # ---------------------------------------------------------------------- |
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| 657 | itcl::body Rappture::Field::_getValue {expr} { |
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| 658 | # |
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| 659 | # First, look for the expression among the <parameter>'s |
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| 660 | # associated with the device. |
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| 661 | # |
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| 662 | set found 0 |
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| 663 | foreach pcomp [$_xmlobj children parameters] { |
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| 664 | set id [$_xmlobj element -as id parameters.$pcomp] |
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| 665 | if {[string equal $id $expr]} { |
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| 666 | set val [$_xmlobj get parameters.$pcomp.current] |
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| 667 | if {"" == $val} { |
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| 668 | set val [$_xmlobj get parameters.$pcomp.default] |
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| 669 | } |
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| 670 | if {"" != $val} { |
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| 671 | set expr $val |
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| 672 | set found 1 |
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| 673 | break |
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| 674 | } |
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[1] | 675 | } |
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| 676 | } |
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[11] | 677 | if {$found} { |
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| 678 | set pcomp "parameters.$pcomp" |
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| 679 | } else { |
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| 680 | set pcomp "" |
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| 681 | } |
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| 682 | |
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| 683 | if {$_units != ""} { |
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| 684 | set expr [Rappture::Units::convert $expr \ |
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| 685 | -context $_units -to $_units -units off] |
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| 686 | } |
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| 687 | |
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| 688 | return [list $expr $pcomp] |
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[1] | 689 | } |
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