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package require BLT
set palette blue.rgb
set pi2 [expr 3.14159265358979323846 * 2]
set x [blt::vector create]
set y [blt::vector create]
$x linspace -2 2 100
$y linspace -2 3 100
set x2 [blt::vector create]
$x2 expr { $x * $x }
set y2 [blt::vector create]
$y2 expr { $y * $y }
set e 2.7182818284590452354
set z {}
foreach i [$y2 values] {
foreach j [$x2 values] k [$x values] {
lappend z [expr $k * pow($e, -$j - $i)]
}
}
blt::contour .g -highlightthickness 0
set mesh [blt::mesh create irregular -y $x -x $y]
.g element create myContour -values $z -mesh $mesh
.g isoline steps 10 -element myContour
.g legend configure -hide yes
.g axis configure z -palette $palette
proc UpdateColors {} {
global usePaletteColors
if { $usePaletteColors } {
.g element configure myContour -color palette -fill palette
} else {
.g element configure myContour -color black -fill red
}
}
proc FixPalette {} {
global palette
.g axis configure z -palette $palette
}
proc Fix { what } {
global show
set bool $show($what)
.g element configure myContour -show$what $bool
}
array set show {
boundary 0
values 0
symbols 0
isolines 0
colormap 0
symbols 0
wireframe 0
}
blt::tk::checkbutton .boundary -text "Boundary" -variable show(boundary) \
-command "Fix boundary"
blt::tk::checkbutton .wireframe -text "Wireframe" -variable show(wireframe) \
-command "Fix wireframe"
blt::tk::checkbutton .colormap -text "Colormap" \
-variable show(colormap) -command "Fix colormap"
blt::tk::checkbutton .isolines -text "Isolines" \
-variable show(isolines) -command "Fix isolines"
blt::tk::checkbutton .values -text "Values" \
-variable show(values) -command "Fix values"
blt::tk::checkbutton .symbols -text "Symbols" \
-variable show(symbols) -command "Fix symbols"
blt::tk::label .label -text ""
blt::tk::checkbutton .interp -text "Use palette colors" \
-variable usePaletteColors -command "UpdateColors"
blt::combobutton .palettes \
-textvariable palette \
-relief sunken \
-background white \
-arrowon yes \
-menu .palettes.menu
blt::tk::label .palettesl -text "Palettes"
blt::combomenu .palettes.menu \
-background white \
-textvariable palette \
-height 200 \
-yscrollbar .palettes.menu.ybar \
-xscrollbar .palettes.menu.xbar
blt::tk::scrollbar .palettes.menu.xbar
blt::tk::scrollbar .palettes.menu.ybar
foreach pal [blt::palette names] {
set pal [string trim $pal ::]
lappend palettes $pal
}
.palettes.menu listadd [lsort -dictionary $palettes] -command FixPalette
blt::table . \
0,0 .label -fill x \
1,0 .g -fill both -rowspan 9 \
1,1 .boundary -anchor w -cspan 2 \
2,1 .colormap -anchor w -cspan 2\
3,1 .isolines -anchor w -cspan 2 \
4,1 .wireframe -anchor w -cspan 2 \
5,1 .symbols -anchor w -cspan 2 \
6,1 .values -anchor w -cspan 2 \
7,1 .interp -anchor w -cspan 2 \
8,1 .palettesl -anchor w \
8,2 .palettes -fill x
blt::table configure . r* c1 -resize none
blt::table configure . r9 -resize both
foreach key [array names show] {
set show($key) [.g element cget myContour -show$key]
}
Blt_ZoomStack .g
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