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package require BLT
set bg [blt::background create linear \
-jitter 3 \
-from w -to e \
-colorscale log \
-lowcolor "grey99"\
-highcolor "grey85"\
-repeat reversing \
-relativeto .controls]
blt::tk::frame .controls -bg $bg -borderwidth 4
option add *BltTkCheckbutton*background $bg
option add *BltTkLabel*background $bg
option add *HighlightThickness 0
set palette amwg_blueyellowred.rgb
set x [blt::vector create]
set y [blt::vector create]
$x linspace -2 2 50
$y linspace -2 2 50
set x2 [blt::vector create]
$x2 expr { $x* $x }
set y2 [blt::vector create]
$y2 expr { $y * $y}
set tmp [blt::vector create]
set z [blt::vector create]
foreach i [$y2 values] {
$tmp expr {($x * exp(-($i + $x2))) * 1000}
$z append $tmp
if 0 {
foreach j [$x2 values] k [$x values] {
set value [expr ($k * exp(-($i + $j))) * 1000]
lappend z $value
}
}
}
set mesh [blt::mesh create regular -y {0 100 50} -x {0 100 50}]
blt::contour .g -highlightthickness 0 -bg white
.g element create myContour -values $z -mesh $mesh
.g isoline steps 10 -element myContour
.g legend configure -hide yes
.g axis configure x -tickdirection in -scale linear
.g axis configure y -tickdirection in -scale linear
.g axis configure z \
-palette $palette \
-colorbarthickness 20 \
-tickdirection in \
-scale linear \
-margin right
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 FixSymbols {} {
global show
if { $show(symbols) } {
.g pen configure activeIsoline -symbol circle
} else {
.g pen configure activeIsoline -symbol none
}
}
proc Decreasing {} {
global decreasing
.g axis configure z -decreasing $decreasing
}
proc Fix { what } {
global show
set bool $show($what)
.g element configure myContour -show$what $bool
}
proc Cutline {} {
update
blt::vector x
blt::vector y
set coords [.g transform 0 0 50 100]
eval .g element cutline myContour $coords x y
.g marker create line -coords { 0 0 50 100 } -linewidth 2 -outline red -under 0
.g marker create text -text A -coords { 0 0 } -anchor e
.g marker create text -text B -coords { 50 100 } -anchor w
x sort y
blt::graph .cutline -height 1i
.cutline element create cutline -x x -y y -symbol none -linewidth 1
blt::table . \
1,0 .cutline -fill x -cspan 2
}
array set show {
boundary 0
values 0
symbols 0
isolines 0
colormap 0
symbols 0
wireframe 0
}
blt::tk::checkbutton .controls.boundary -text "Boundary" -variable show(boundary) \
-command "Fix boundary"
blt::tk::checkbutton .controls.wireframe -text "Wireframe" -variable show(wireframe) \
-command "Fix wireframe"
blt::tk::checkbutton .controls.colormap -text "Colormap" \
-variable show(colormap) -command "Fix colormap"
blt::tk::checkbutton .controls.isolines -text "Isolines" \
-variable show(isolines) -command "Fix isolines"
blt::tk::checkbutton .controls.values -text "Values" \
-variable show(values) -command "Fix values"
blt::tk::checkbutton .controls.symbols -text "Symbols" \
-variable show(symbols) -command "FixSymbols"
blt::tk::checkbutton .controls.interp -text "Use palette colors" \
-variable usePaletteColors -command "UpdateColors"
blt::tk::checkbutton .controls.decreasing -text "Decreasing" \
-variable decreasing -command "Decreasing"
blt::combobutton .controls.palettes \
-textvariable palette \
-relief sunken \
-background white \
-arrowon yes \
-menu .controls.palettes.menu
blt::tk::label .controls.palettesl -text "Palettes"
blt::combomenu .controls.palettes.menu \
-background white \
-textvariable palette \
-height 200 \
-yscrollbar .controls.palettes.menu.ybar \
-xscrollbar .controls.palettes.menu.xbar
blt::tk::scrollbar .controls.palettes.menu.xbar
blt::tk::scrollbar .controls.palettes.menu.ybar
foreach pal [blt::palette names] {
set pal [string trim $pal ::]
lappend palettes $pal
}
.controls.palettes.menu listadd [lsort -dictionary $palettes] -command FixPalette
blt::table .controls \
0,0 .controls.boundary -anchor w -cspan 2 \
1,0 .controls.colormap -anchor w -cspan 2\
2,0 .controls.isolines -anchor w -cspan 2 \
3,0 .controls.wireframe -anchor w -cspan 2 \
4,0 .controls.symbols -anchor w -cspan 2 \
5,0 .controls.values -anchor w -cspan 2 \
6,0 .controls.interp -anchor w -cspan 2 \
7,0 .controls.decreasing -anchor w -cspan 2 \
8,0 .controls.palettesl -anchor w \
8,1 .controls.palettes -fill x
blt::table configure .controls r* c1 -resize none
blt::table configure .controls r9 -resize both
blt::table . \
0,0 .g -fill both \
0,1 .controls -fill both
foreach key [array names show] {
set show($key) [.g element cget myContour -show$key]
}
Blt_ZoomStack .g
.g isoline bind all <Enter> {
%W isoline deactivate all
%W isoline activate current
}
.g isoline bind all <Leave> {
%W isoline deactivate all
}
update
Cutline
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