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source: branches/1.4/gui/scripts/vtkheightmapviewer.tcl @ 5187

Last change on this file since 5187 was 5187, checked in by ldelgass, 9 years ago
s/styles/style/ (for code consistency), remove unused member variables
File size: 90.5 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkheightmapviewer - Vtk heightmap viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2014 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkHeightmapViewer.width 4i widgetDefault
19	option add VtkHeightmapViewercursor crosshair widgetDefault
20	option add *VtkHeightmapViewer.height 4i widgetDefault
21	option add *VtkHeightmapViewer.foreground black widgetDefault
22	option add *VtkHeightmapViewer.controlBackground gray widgetDefault
23	option add *VtkHeightmapViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkHeightmapViewer.plotBackground black widgetDefault
25	option add *VtkHeightmapViewer.plotForeground white widgetDefault
26	option add *VtkHeightmapViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkHeightmapViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkHeightmapViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkHeightmapViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40	itk_option define -mode mode Mode "contour"
41
42	constructor { hostlist args } {
43	Rappture::VisViewer::constructor $hostlist
44	} {
45	# defined below
46	}
47	destructor {
48	# defined below
49	}
50	public proc SetServerList { namelist } {
51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
52	}
53	public method add {dataobj {settings ""}}
54	public method camera {option args}
55	public method delete {args}
56	public method disconnect {}
57	public method download {option args}
58	public method get {args}
59	public method isconnected {}
60	public method parameters {title args} {
61	# do nothing
62	}
63	public method scale {args}
64
65	# The following methods are only used by this class.
66	private method AdjustSetting {what {value ""}}
67	private method BuildAxisTab {}
68	private method BuildCameraTab {}
69	private method BuildColormap { name }
70	private method BuildContourTab {}
71	private method BuildDownloadPopup { widget command }
72	private method CameraReset {}
73	private method Combo { option }
74	private method Connect {}
75	private method CurrentDatasets {args}
76	private method Disconnect {}
77	private method DoResize {}
78	private method DoRotate {}
79	private method DrawLegend {}
80	private method EnterLegend { x y }
81	private method EventuallyRequestLegend {}
82	private method EventuallyResize { w h }
83	private method EventuallyRotate { q }
84	private method GetHeightmapScale {}
85	private method GetImage { args }
86	private method GetVtkData { args }
87	private method InitSettings { args }
88	private method IsValidObject { dataobj }
89	private method LeaveLegend {}
90	private method MotionLegend { x y }
91	private method Pan {option x y}
92	private method PanCamera {}
93	private method Pick {x y}
94	private method QuaternionToView { q } {
95	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
96	}
97	private method Rebuild {}
98	private method ReceiveDataset { args }
99	private method ReceiveImage { args }
100	private method ReceiveLegend { colormap title min max size }
101	private method RequestLegend {}
102	private method ResetAxes {}
103	private method Rotate {option x y}
104	private method SetCurrentColormap { color }
105	private method SetLegendTip { x y }
106	private method SetObjectStyle { dataobj comp }
107	private method SetOrientation { side }
108	private method UpdateContourList {}
109	private method ViewToQuaternion {} {
110	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
111	}
112	private method Zoom {option}
113
114	private variable _arcball ""
115	private variable _dlist "" ; # list of data objects
116	private variable _obj2datasets
117	private variable _obj2ovride ; # maps dataobj => style override
118	private variable _comp2scale; # maps dataset to the heightmap scale.
119	private variable _datasets ; # contains all the dataobj-component
120	; # datasets in the server
121	private variable _colormaps ; # contains all the colormaps
122	; # in the server.
123
124	# The name of the current colormap used. The colormap is global to all
125	# heightmaps displayed.
126	private variable _currentColormap ""
127	private variable _currentNumIsolines -1
128
129	private variable _maxScale 100; # This is the # of times the x-axis
130	# and y-axis ranges can differ before
131	# automatically turning on
132	# -stretchtofit
133
134	private variable _click ; # info used for rotate operations
135	private variable _limits ; # Holds overall limits for all dataobjs
136	# using the viewer.
137	private variable _view ; # view params for 3D view
138	private variable _settings
139	private variable _changed
140	private variable _reset 1; # Connection to server has been reset.
141
142	private variable _first "" ; # This is the topmost dataset.
143	private variable _start 0
144	private variable _isolines
145	private variable _contourList ""
146
147	common _downloadPopup; # download options from popup
148	private common _hardcopy
149	private variable _width 0
150	private variable _height 0
151	private variable _legendWidth 0
152	private variable _legendHeight 0
153	private variable _resizePending 0
154	private variable _rotatePending 0
155	private variable _legendPending 0
156	private variable _fieldNames {}
157	private variable _fields
158	private variable _curFldName ""
159	private variable _curFldLabel ""
160	private variable _colorMode "scalar";# Mode of colormap (vmag or scalar)
161	}
162
163	itk::usual VtkHeightmapViewer {
164	keep -background -foreground -cursor -font
165	keep -plotbackground -plotforeground -mode
166	}
167
168	# ----------------------------------------------------------------------
169	# CONSTRUCTOR
170	# ----------------------------------------------------------------------
171	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
172	set _serverType "vtkvis"
173
174	EnableWaitDialog 900
175	# Rebuild event
176	$_dispatcher register !rebuild
177	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
178
179	# Resize event
180	$_dispatcher register !resize
181	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
182
183	# Rotate event
184	$_dispatcher register !rotate
185	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
186
187	# Legend event
188	$_dispatcher register !legend
189	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
190
191	#
192	# Populate parser with commands handle incoming requests
193	#
194	$_parser alias image [itcl::code $this ReceiveImage]
195	$_parser alias dataset [itcl::code $this ReceiveDataset]
196	$_parser alias legend [itcl::code $this ReceiveLegend]
197
198	# Create image for legend colorbar.
199	set _image(legend) [image create photo]
200
201	# Initialize the view to some default parameters.
202	array set _view {
203	-ortho 0
204	-qw 0.36
205	-qx 0.25
206	-qy 0.50
207	-qz 0.70
208	-xpan 0
209	-ypan 0
210	-zoom 1.0
211	}
212	set _arcball [blt::arcball create 100 100]
213	$_arcball quaternion [ViewToQuaternion]
214
215	array set _settings {
216	-axisflymode "static"
217	-axislabels 1
218	-axisminorticks 1
219	-axisvisible 1
220	-colormap BCGYR
221	-colormapdiscrete 0
222	-colormapvisible 1
223	-edges 0
224	-field "Default"
225	-heightmapscale 50
226	-isheightmap 0
227	-isolinecolor black
228	-isolinesvisible 1
229	-legendvisible 1
230	-lighting 1
231	-numisolines 10
232	-opacity 100
233	-outline 0
234	-savelighting 1
235	-saveopacity 100
236	-saveoutline 0
237	-stretchtofit 0
238	-wireframe 0
239	-xgrid 0
240	-ygrid 0
241	-zgrid 0
242	}
243	array set _changed {
244	-colormap 0
245	-numisolines 0
246	-opacity 0
247	}
248	itk_component add view {
249	canvas $itk_component(plotarea).view \
250	-highlightthickness 0 -borderwidth 0
251	} {
252	usual
253	ignore -highlightthickness -borderwidth -background
254	}
255
256	itk_component add fieldmenu {
257	menu $itk_component(plotarea).menu \
258	-relief flat \
259	-tearoff no
260	} {
261	usual
262	ignore -background -foreground -relief -tearoff
263	}
264	set c $itk_component(view)
265	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
266	bind $c <4> [itcl::code $this Zoom in 0.25]
267	bind $c <5> [itcl::code $this Zoom out 0.25]
268	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
269	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
270	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
271	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
272	bind $c <Enter> "focus %W"
273	bind $c <Control-F1> [itcl::code $this ToggleConsole]
274
275	# Fix the scrollregion in case we go off screen
276	$c configure -scrollregion [$c bbox all]
277
278	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
279	set _map(cwidth) -1
280	set _map(cheight) -1
281	set _map(zoom) 1.0
282	set _map(original) ""
283
284	set f [$itk_component(main) component controls]
285	itk_component add reset {
286	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
287	-highlightthickness 0 \
288	-image [Rappture::icon reset-view] \
289	-command [itcl::code $this CameraReset]
290	} {
291	usual
292	ignore -highlightthickness
293	}
294	pack $itk_component(reset) -side top -padx 2 -pady { 2 0 }
295	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
296
297	itk_component add zoomin {
298	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
299	-highlightthickness 0 \
300	-image [Rappture::icon zoom-in] \
301	-command [itcl::code $this Zoom in]
302	} {
303	usual
304	ignore -highlightthickness
305	}
306	pack $itk_component(zoomin) -side top -padx 2 -pady { 2 0 }
307	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
308
309	itk_component add zoomout {
310	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
311	-highlightthickness 0 \
312	-image [Rappture::icon zoom-out] \
313	-command [itcl::code $this Zoom out]
314	} {
315	usual
316	ignore -highlightthickness
317	}
318	pack $itk_component(zoomout) -side top -padx 2 -pady { 2 0 }
319	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
320
321	itk_component add mode {
322	Rappture::PushButton $f.mode \
323	-onimage [Rappture::icon surface] \
324	-offimage [Rappture::icon surface] \
325	-variable [itcl::scope _settings(-isheightmap)] \
326	-command [itcl::code $this AdjustSetting -isheightmap] \
327	}
328	Rappture::Tooltip::for $itk_component(mode) \
329	"Toggle the surface/contour on/off"
330	pack $itk_component(mode) -padx 2 -pady { 2 0 }
331
332	itk_component add stretchtofit {
333	Rappture::PushButton $f.stretchtofit \
334	-onimage [Rappture::icon stretchtofit] \
335	-offimage [Rappture::icon stretchtofit] \
336	-variable [itcl::scope _settings(-stretchtofit)] \
337	-command [itcl::code $this AdjustSetting -stretchtofit] \
338	}
339	Rappture::Tooltip::for $itk_component(stretchtofit) \
340	"Stretch plot to fit window on/off"
341	pack $itk_component(stretchtofit) -padx 2 -pady 2
342
343	if { [catch {
344	BuildContourTab
345	BuildAxisTab
346	BuildCameraTab
347	} errs] != 0 } {
348	global errorInfo
349	puts stderr "errs=$errs errorInfo=$errorInfo"
350	}
351
352	# Hack around the Tk panewindow. The problem is that the requested
353	# size of the 3d view isn't set until an image is retrieved from
354	# the server. So the panewindow uses the tiny size.
355	set w 10000
356	pack forget $itk_component(view)
357	blt::table $itk_component(plotarea) \
358	0,0 $itk_component(view) -fill both -reqwidth $w
359	blt::table configure $itk_component(plotarea) c1 -resize none
360
361	# Bindings for panning via mouse
362	bind $itk_component(view) <ButtonPress-2> \
363	[itcl::code $this Pan click %x %y]
364	bind $itk_component(view) <B2-Motion> \
365	[itcl::code $this Pan drag %x %y]
366	bind $itk_component(view) <ButtonRelease-2> \
367	[itcl::code $this Pan release %x %y]
368
369	#bind $itk_component(view) <ButtonRelease-3> \
370	# [itcl::code $this Pick %x %y]
371
372	# Bindings for panning via keyboard
373	bind $itk_component(view) <KeyPress-Left> \
374	[itcl::code $this Pan set -10 0]
375	bind $itk_component(view) <KeyPress-Right> \
376	[itcl::code $this Pan set 10 0]
377	bind $itk_component(view) <KeyPress-Up> \
378	[itcl::code $this Pan set 0 -10]
379	bind $itk_component(view) <KeyPress-Down> \
380	[itcl::code $this Pan set 0 10]
381	bind $itk_component(view) <Shift-KeyPress-Left> \
382	[itcl::code $this Pan set -2 0]
383	bind $itk_component(view) <Shift-KeyPress-Right> \
384	[itcl::code $this Pan set 2 0]
385	bind $itk_component(view) <Shift-KeyPress-Up> \
386	[itcl::code $this Pan set 0 -2]
387	bind $itk_component(view) <Shift-KeyPress-Down> \
388	[itcl::code $this Pan set 0 2]
389
390	# Bindings for zoom via keyboard
391	bind $itk_component(view) <KeyPress-Prior> \
392	[itcl::code $this Zoom out]
393	bind $itk_component(view) <KeyPress-Next> \
394	[itcl::code $this Zoom in]
395
396	bind $itk_component(view) <Enter> "focus $itk_component(view)"
397
398	if {[string equal "x11" [tk windowingsystem]]} {
399	# Bindings for zoom via mouse
400	bind $itk_component(view) <4> [itcl::code $this Zoom out]
401	bind $itk_component(view) <5> [itcl::code $this Zoom in]
402	}
403
404	set _image(download) [image create photo]
405	eval itk_initialize $args
406	Connect
407	}
408
409	# ----------------------------------------------------------------------
410	# DESTRUCTOR
411	# ----------------------------------------------------------------------
412	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
413	Disconnect
414	image delete $_image(plot)
415	image delete $_image(download)
416	catch { blt::arcball destroy $_arcball }
417	}
418
419	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
420	if { $_width < 2 } {
421	set _width 500
422	}
423	if { $_height < 2 } {
424	set _height 500
425	}
426	set _start [clock clicks -milliseconds]
427	SendCmd "screen size [expr $_width - 20] $_height"
428
429	set font "Arial 8"
430	set lh [font metrics $font -linespace]
431	set h [expr {$_height - 2 * ($lh + 2)}]
432	if { $h != $_legendHeight } {
433	EventuallyRequestLegend
434	} else {
435	DrawLegend
436	}
437	set _resizePending 0
438	}
439
440	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
441	SendCmd "camera orient [ViewToQuaternion]"
442	set _rotatePending 0
443	}
444
445	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
446	if { !$_legendPending } {
447	set _legendPending 1
448	$_dispatcher event -idle !legend
449	}
450	}
451
452	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
453	set _width $w
454	set _height $h
455	$_arcball resize $w $h
456	if { !$_resizePending } {
457	set _resizePending 1
458	$_dispatcher event -after 250 !resize
459	}
460	}
461
462	set rotate_delay 100
463
464	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
465	QuaternionToView $q
466	if { !$_rotatePending } {
467	set _rotatePending 1
468	global rotate_delay
469	$_dispatcher event -after $rotate_delay !rotate
470	}
471	}
472
473	# ----------------------------------------------------------------------
474	# USAGE: add <dataobj> ?<settings>?
475	#
476	# Clients use this to add a data object to the plot. The optional
477	# <settings> are used to configure the plot. Allowed settings are
478	# -color, -brightness, -width, -linestyle, and -raise.
479	# ----------------------------------------------------------------------
480	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
481	if { ![$dataobj isvalid] } {
482	return; # Object doesn't contain valid data.
483	}
484	array set params {
485	-color auto
486	-width 1
487	-linestyle solid
488	-brightness 0
489	-raise 0
490	-description ""
491	-param ""
492	-type ""
493	}
494	array set params $settings
495	set params(-description) ""
496	set params(-param) ""
497	array set params $settings
498
499	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
500	# can't handle -autocolors yet
501	set params(-color) white
502	}
503	set pos [lsearch -exact $_dlist $dataobj]
504	if {$pos < 0} {
505	lappend _dlist $dataobj
506	}
507	set _obj2ovride($dataobj-color) $params(-color)
508	set _obj2ovride($dataobj-width) $params(-width)
509	set _obj2ovride($dataobj-raise) $params(-raise)
510	$_dispatcher event -idle !rebuild
511	}
512
513
514	# ----------------------------------------------------------------------
515	# USAGE: delete ?<dataobj1> <dataobj2> ...?
516	#
517	# Clients use this to delete a dataobj from the plot. If no dataobjs
518	# are specified, then all dataobjs are deleted. No data objects are
519	# deleted. They are only removed from the display list.
520	#
521	# ----------------------------------------------------------------------
522	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
523	if { [llength $args] == 0} {
524	set args $_dlist
525	}
526	# Delete all specified dataobjs
527	set changed 0
528	foreach dataobj $args {
529	set pos [lsearch -exact $_dlist $dataobj]
530	if { $pos < 0 } {
531	continue; # Don't know anything about it.
532	}
533	# Remove it from the dataobj list.
534	set _dlist [lreplace $_dlist $pos $pos]
535	array unset _obj2ovride $dataobj-*
536	array unset _settings $dataobj-*
537	set changed 1
538	}
539	# If anything changed, then rebuild the plot
540	if { $changed } {
541	$_dispatcher event -idle !rebuild
542	}
543	}
544
545	# ----------------------------------------------------------------------
546	# USAGE: get ?-objects?
547	# USAGE: get ?-visible?
548	# USAGE: get ?-image view?
549	#
550	# Clients use this to query the list of objects being plotted, in
551	# order from bottom to top of this result. The optional "-image"
552	# flag can also request the internal images being shown.
553	# ----------------------------------------------------------------------
554	itcl::body Rappture::VtkHeightmapViewer::get {args} {
555	if {[llength $args] == 0} {
556	set args "-objects"
557	}
558	set op [lindex $args 0]
559	switch -- $op {
560	"-objects" {
561	# put the dataobj list in order according to -raise options
562	set dlist {}
563	foreach dataobj $_dlist {
564	if { ![IsValidObject $dataobj] } {
565	continue
566	}
567	if {[info exists _obj2ovride($dataobj-raise)] &&
568	$_obj2ovride($dataobj-raise)} {
569	set dlist [linsert $dlist 0 $dataobj]
570	} else {
571	lappend dlist $dataobj
572	}
573	}
574	return $dlist
575	}
576	"-visible" {
577	set dlist {}
578	foreach dataobj $_dlist {
579	if { ![IsValidObject $dataobj] } {
580	continue
581	}
582	if { ![info exists _obj2ovride($dataobj-raise)] } {
583	# No setting indicates that the object isn't visible.
584	continue
585	}
586	# Otherwise use the -raise parameter to put the object to
587	# the front of the list.
588	if { $_obj2ovride($dataobj-raise) } {
589	set dlist [linsert $dlist 0 $dataobj]
590	} else {
591	lappend dlist $dataobj
592	}
593	}
594	return $dlist
595	}
596	-image {
597	if {[llength $args] != 2} {
598	error "wrong # args: should be \"get -image view\""
599	}
600	switch -- [lindex $args end] {
601	view {
602	return $_image(plot)
603	}
604	default {
605	error "bad image name \"[lindex $args end]\": should be view"
606	}
607	}
608	}
609	default {
610	error "bad option \"$op\": should be -objects or -image"
611	}
612	}
613	}
614
615	#
616	# scale --
617	#
618	# This gets called either incrementally as new simulations are
619	# added or all at once as a sequence of heightmaps.
620	# This accounts for all objects--even those not showing on the
621	# screen. Because of this, the limits are appropriate for all
622	# objects as the user scans through data in the ResultSet viewer.
623	#
624	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
625	foreach dataobj $args {
626	if { ![$dataobj isvalid] } {
627	continue; # Object doesn't contain valid data.
628	}
629	foreach axis { x y } {
630	set lim [$dataobj limits $axis]
631	if { ![info exists _limits($axis)] } {
632	set _limits($axis) $lim
633	continue
634	}
635	foreach {min max} $lim break
636	foreach {amin amax} $_limits($axis) break
637	if { $amin > $min } {
638	set amin $min
639	}
640	if { $amax < $max } {
641	set amax $max
642	}
643	set _limits($axis) [list $amin $amax]
644	set units [$dataobj hints ${axis}units]
645	set found($units) 1
646	}
647	foreach { fname lim } [$dataobj fieldlimits] {
648	if { ![info exists _limits($fname)] } {
649	set _limits($fname) $lim
650	continue
651	}
652	foreach {min max} $lim break
653	foreach {fmin fmax} $_limits($fname) break
654	if { $fmin > $min } {
655	set fmin $min
656	}
657	if { $fmax < $max } {
658	set fmax $max
659	}
660	set _limits($fname) [list $fmin $fmax]
661	}
662	}
663	if { [array size found] > 1 } {
664	set _settings(-stretchtofit) 1
665	} else {
666	# Check if the range of the x and y axes requires that we stretch
667	# the contour to fit the plotting area. This can happen when the
668	# x and y scales differ greatly (> 100x)
669	foreach {xmin xmax} $_limits(x) break
670	foreach {ymin ymax} $_limits(y) break
671	if { (($xmax - $xmin) > (($ymax -$ymin) * $_maxScale)) \|\|
672	((($xmax - $xmin) * $_maxScale) < ($ymax -$ymin)) } {
673	set _settings(-stretchtofit) 1
674	}
675	}
676	}
677
678	# ----------------------------------------------------------------------
679	# USAGE: download coming
680	# USAGE: download controls <downloadCommand>
681	# USAGE: download now
682	#
683	# Clients use this method to create a downloadable representation
684	# of the plot. Returns a list of the form {ext string}, where
685	# "ext" is the file extension (indicating the type of data) and
686	# "string" is the data itself.
687	# ----------------------------------------------------------------------
688	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
689	switch $option {
690	coming {
691	if {[catch {
692	blt::winop snap $itk_component(plotarea) $_image(download)
693	}]} {
694	$_image(download) configure -width 1 -height 1
695	$_image(download) put #000000
696	}
697	}
698	controls {
699	set popup .vtkviewerdownload
700	if { ![winfo exists .vtkviewerdownload] } {
701	set inner [BuildDownloadPopup $popup [lindex $args 0]]
702	} else {
703	set inner [$popup component inner]
704	}
705	set _downloadPopup(image_controls) $inner.image_frame
706	set num [llength [get]]
707	set num [expr {($num == 1) ? "1 result" : "$num results"}]
708	set word [Rappture::filexfer::label downloadWord]
709	$inner.summary configure -text "$word $num in the following format:"
710	update idletasks ;# Fix initial sizes
711	return $popup
712	}
713	now {
714	set popup .vtkviewerdownload
715	if {[winfo exists .vtkviewerdownload]} {
716	$popup deactivate
717	}
718	switch -- $_downloadPopup(format) {
719	"image" {
720	return [$this GetImage [lindex $args 0]]
721	}
722	"vtk" {
723	return [$this GetVtkData [lindex $args 0]]
724	}
725	}
726	return ""
727	}
728	default {
729	error "bad option \"$option\": should be coming, controls, now"
730	}
731	}
732	}
733
734	# ----------------------------------------------------------------------
735	# USAGE: Connect ?<host:port>,<host:port>...?
736	#
737	# Clients use this method to establish a connection to a new
738	# server, or to reestablish a connection to the previous server.
739	# Any existing connection is automatically closed.
740	# ----------------------------------------------------------------------
741	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
742	global readyForNextFrame
743	set readyForNextFrame 1
744	set _hosts [GetServerList "vtkvis"]
745	if { "" == $_hosts } {
746	return 0
747	}
748	set _reset 1
749	set result [VisViewer::Connect $_hosts]
750	if { $result } {
751	if { $_reportClientInfo } {
752	# Tell the server the viewer, hub, user and session.
753	# Do this immediately on connect before buffering any commands
754	global env
755
756	set info {}
757	set user "???"
758	if { [info exists env(USER)] } {
759	set user $env(USER)
760	}
761	set session "???"
762	if { [info exists env(SESSION)] } {
763	set session $env(SESSION)
764	}
765	lappend info "version" "$Rappture::version"
766	lappend info "build" "$Rappture::build"
767	lappend info "svnurl" "$Rappture::svnurl"
768	lappend info "installdir" "$Rappture::installdir"
769	lappend info "hub" [exec hostname]
770	lappend info "client" "vtkheightmapviewer"
771	lappend info "user" $user
772	lappend info "session" $session
773	SendCmd "clientinfo [list $info]"
774	}
775	set w [winfo width $itk_component(view)]
776	set h [winfo height $itk_component(view)]
777	EventuallyResize $w $h
778	}
779	return $result
780	}
781
782	#
783	# isconnected --
784	#
785	# Indicates if we are currently connected to the visualization server.
786	#
787	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
788	return [VisViewer::IsConnected]
789	}
790
791	#
792	# disconnect --
793	#
794	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
795	Disconnect
796	set _reset 1
797	}
798
799	#
800	# Disconnect --
801	#
802	# Clients use this method to disconnect from the current rendering
803	# server.
804	#
805	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
806	VisViewer::Disconnect
807
808	$_dispatcher cancel !rebuild
809	$_dispatcher cancel !resize
810	$_dispatcher cancel !rotate
811	$_dispatcher cancel !legend
812	# disconnected -- no more data sitting on server
813	array unset _datasets
814	array unset _data
815	array unset _colormaps
816	array unset _obj2datasets
817	global readyForNextFrame
818	set readyForNextFrame 1
819	}
820
821	# ----------------------------------------------------------------------
822	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
823	#
824	# Invoked automatically whenever the "image" command comes in from
825	# the rendering server. Indicates that binary image data with the
826	# specified <size> will follow.
827	# ----------------------------------------------------------------------
828	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
829	global readyForNextFrame
830	set readyForNextFrame 1
831	array set info {
832	-token "???"
833	-bytes 0
834	-type image
835	}
836	array set info $args
837	set bytes [ReceiveBytes $info(-bytes)]
838	if { $info(-type) == "image" } {
839	if 0 {
840	set f [open "last.ppm" "w"]
841	fconfigure $f -encoding binary
842	puts -nonewline $f $bytes
843	close $f
844	}
845	$_image(plot) configure -data $bytes
846	set time [clock seconds]
847	set date [clock format $time]
848	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
849	if { $_start > 0 } {
850	set finish [clock clicks -milliseconds]
851	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
852	set _start 0
853	}
854	} elseif { $info(type) == "print" } {
855	set tag $this-print-$info(-token)
856	set _hardcopy($tag) $bytes
857	}
858	}
859
860	#
861	# ReceiveDataset --
862	#
863	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
864	if { ![isconnected] } {
865	return
866	}
867	set option [lindex $args 0]
868	switch -- $option {
869	"scalar" {
870	set option [lindex $args 1]
871	switch -- $option {
872	"world" {
873	foreach { x y z value tag } [lrange $args 2 end] break
874	}
875	"pixel" {
876	foreach { x y value tag } [lrange $args 2 end] break
877	}
878	}
879	}
880	"vector" {
881	set option [lindex $args 1]
882	switch -- $option {
883	"world" {
884	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
885	}
886	"pixel" {
887	foreach { x y vx vy vz tag } [lrange $args 2 end] break
888	}
889	}
890	}
891	"names" {
892	foreach { name } [lindex $args 1] {
893	#puts stderr "Dataset: $name"
894	}
895	}
896	default {
897	error "unknown dataset option \"$option\" from server"
898	}
899	}
900	}
901
902	# ----------------------------------------------------------------------
903	# USAGE: Rebuild
904	#
905	# Called automatically whenever something changes that affects the
906	# data in the widget. Clears any existing data and rebuilds the
907	# widget to display new data.
908	# ----------------------------------------------------------------------
909	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
910	set w [winfo width $itk_component(view)]
911	set h [winfo height $itk_component(view)]
912	if { $w < 2 \|\| $h < 2 } {
913	update
914	$_dispatcher event -idle !rebuild
915	return
916	}
917
918	# Turn on buffering of commands to the server. We don't want to
919	# be preempted by a server disconnect/reconnect (which automatically
920	# generates a new call to Rebuild).
921	StartBufferingCommands
922
923	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
924	set _width $w
925	set _height $h
926	$_arcball resize $w $h
927	DoResize
928	if { $_settings(-stretchtofit) } {
929	AdjustSetting -stretchtofit
930	}
931	}
932	if { $_reset } {
933	#
934	# Reset the camera and other view parameters
935	#
936	InitSettings -isheightmap -background
937
938	# Setting a custom exponent and label format for axes is causing
939	# a problem with rounding. Near zero ticks aren't rounded by
940	# the %g format. The VTK CubeAxes seem to currently work best
941	# when allowed to automatically set the exponent and precision
942	# based on the axis ranges. This does tend to result in less
943	# visual clutter, so I think it is best to use the automatic
944	# settings by default. We can test more fine-grained
945	# controls on the axis settings tab if necessary.
946	# -Leif
947	#SendCmd "axis exp 0 0 0 1"
948
949	SendCmd "axis lrot z 90"
950	$_arcball quaternion [ViewToQuaternion]
951	if {$_settings(-isheightmap) } {
952	if { $_view(-ortho)} {
953	SendCmd "camera mode ortho"
954	} else {
955	SendCmd "camera mode persp"
956	}
957	DoRotate
958	SendCmd "camera reset"
959	}
960	PanCamera
961	StopBufferingCommands
962	SendCmd "imgflush"
963	StartBufferingCommands
964	}
965
966	set _first ""
967	# Start off with no datasets are visible.
968	SendCmd "dataset visible 0"
969	set scale [GetHeightmapScale]
970	foreach dataobj [get -objects] {
971	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
972	set _first $dataobj
973	}
974	set _obj2datasets($dataobj) ""
975	foreach comp [$dataobj components] {
976	set tag $dataobj-$comp
977	if { ![info exists _datasets($tag)] } {
978	set bytes [$dataobj vtkdata $comp]
979	if 0 {
980	set f [open /tmp/vtkheightmap.vtk "w"]
981	fconfigure $f -translation binary -encoding binary
982	puts -nonewline $f $bytes
983	close $f
984	}
985	set length [string length $bytes]
986	if { $_reportClientInfo } {
987	set info {}
988	lappend info "tool_id" [$dataobj hints toolid]
989	lappend info "tool_name" [$dataobj hints toolname]
990	lappend info "tool_title" [$dataobj hints tooltitle]
991	lappend info "tool_command" [$dataobj hints toolcommand]
992	lappend info "tool_revision" [$dataobj hints toolrevision]
993	lappend info "dataset_label" [$dataobj hints label]
994	lappend info "dataset_size" $length
995	lappend info "dataset_tag" $tag
996	SendCmd "clientinfo [list $info]"
997	}
998	SendCmd "dataset add $tag data follows $length"
999	SendData $bytes
1000	set _datasets($tag) 1
1001	SetObjectStyle $dataobj $comp
1002	}
1003	lappend _obj2datasets($dataobj) $tag
1004	if { [info exists _obj2ovride($dataobj-raise)] } {
1005	# Setting dataset visible enables outline
1006	# and heightmap
1007	SendCmd "dataset visible 1 $tag"
1008	}
1009	if { ![info exists _comp2scale($tag)] \|\|
1010	$_comp2scale($tag) != $scale } {
1011	SendCmd "heightmap heightscale $scale $tag"
1012	set _comp2scale($tag) $scale
1013	}
1014	}
1015	}
1016	if { $_first != "" } {
1017	$itk_component(field) choices delete 0 end
1018	$itk_component(fieldmenu) delete 0 end
1019	array unset _fields
1020	set _curFldName ""
1021	foreach cname [$_first components] {
1022	foreach fname [$_first fieldnames $cname] {
1023	if { [info exists _fields($fname)] } {
1024	continue
1025	}
1026	foreach { label units components } \
1027	[$_first fieldinfo $fname] break
1028	$itk_component(field) choices insert end "$fname" "$label"
1029	$itk_component(fieldmenu) add radiobutton -label "$label" \
1030	-value $label -variable [itcl::scope _curFldLabel] \
1031	-selectcolor red \
1032	-activebackground $itk_option(-plotbackground) \
1033	-activeforeground $itk_option(-plotforeground) \
1034	-font "Arial 8" \
1035	-command [itcl::code $this Combo invoke]
1036	set _fields($fname) [list $label $units $components]
1037	if { $_curFldName == "" } {
1038	set _curFldName $fname
1039	set _curFldLabel $label
1040	}
1041	}
1042	}
1043	$itk_component(field) value $_curFldLabel
1044	}
1045	InitSettings -stretchtofit -outline
1046
1047	if { $_reset } {
1048	SendCmd "axis tickpos outside"
1049	#SendCmd "axis lformat all %g"
1050
1051	foreach axis { x y z } {
1052	set label ""
1053	if { $_first != "" } {
1054	if { $axis == "z" } {
1055	set label [$_first hints label]
1056	} else {
1057	set label [$_first hints ${axis}label]
1058	}
1059	}
1060	if { $label == "" } {
1061	if {$axis == "z"} {
1062	if { [string match "component*" $_curFldName] } {
1063	set label [string toupper $axis]
1064	} else {
1065	set label $_curFldLabel
1066	}
1067	} else {
1068	set label [string toupper $axis]
1069	}
1070	}
1071	# May be a space in the axis label.
1072	SendCmd [list axis name $axis $label]
1073
1074	set units ""
1075	if { $_first != "" } {
1076	if { $axis == "z" } {
1077	set units [$_first hints units]
1078	} else {
1079	set units [$_first hints ${axis}units]
1080	}
1081	}
1082	if { $units == "" && $axis == "z" } {
1083	if { $_first != "" && [$_first hints zunits] != "" } {
1084	set units [$_first hints zunits]
1085	} elseif { [info exists _fields($_curFldName)] } {
1086	set units [lindex $_fields($_curFldName) 1]
1087	}
1088	}
1089	# May be a space in the axis units.
1090	SendCmd [list axis units $axis $units]
1091	}
1092	#
1093	# Reset the camera and other view parameters
1094	#
1095	ResetAxes
1096	$_arcball quaternion [ViewToQuaternion]
1097	if {$_settings(-isheightmap) } {
1098	if { $_view(-ortho)} {
1099	SendCmd "camera mode ortho"
1100	} else {
1101	SendCmd "camera mode persp"
1102	}
1103	DoRotate
1104	SendCmd "camera reset"
1105	}
1106	PanCamera
1107	InitSettings -xgrid -ygrid -zgrid \
1108	-axisvisible -axislabels -heightmapscale -field -isheightmap \
1109	-numisolines
1110	if { [array size _fields] < 2 } {
1111	catch {blt::table forget $itk_component(field) $itk_component(field_l)}
1112	}
1113	RequestLegend
1114	set _reset 0
1115	}
1116	global readyForNextFrame
1117	set readyForNextFrame 0; # Don't advance to the next frame
1118
1119	# Actually write the commands to the server socket. If it fails, we don't
1120	# care. We're finished here.
1121	blt::busy hold $itk_component(hull)
1122	StopBufferingCommands
1123	blt::busy release $itk_component(hull)
1124	}
1125
1126	# ----------------------------------------------------------------------
1127	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1128	#
1129	# Returns a list of server IDs for the current datasets being displayed. This
1130	# is normally a single ID, but it might be a list of IDs if the current data
1131	# object has multiple components.
1132	# ----------------------------------------------------------------------
1133	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1134	set flag [lindex $args 0]
1135	switch -- $flag {
1136	"-all" {
1137	if { [llength $args] > 1 } {
1138	error "CurrentDatasets: can't specify dataobj after \"-all\""
1139	}
1140	set dlist [get -objects]
1141	}
1142	"-visible" {
1143	if { [llength $args] > 1 } {
1144	set dlist {}
1145	set args [lrange $args 1 end]
1146	foreach dataobj $args {
1147	if { [info exists _obj2ovride($dataobj-raise)] } {
1148	lappend dlist $dataobj
1149	}
1150	}
1151	} else {
1152	set dlist [get -visible]
1153	}
1154	}
1155	default {
1156	set dlist $args
1157	}
1158	}
1159	set rlist ""
1160	foreach dataobj $dlist {
1161	foreach comp [$dataobj components] {
1162	set tag $dataobj-$comp
1163	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1164	lappend rlist $tag
1165	}
1166	}
1167	}
1168	return $rlist
1169	}
1170
1171	itcl::body Rappture::VtkHeightmapViewer::CameraReset {} {
1172	array set _view {
1173	-qw 0.36
1174	-qx 0.25
1175	-qy 0.50
1176	-qz 0.70
1177	-xpan 0
1178	-ypan 0
1179	-zoom 1.0
1180	}
1181	if { $_first != "" } {
1182	set location [$_first hints camera]
1183	if { $location != "" } {
1184	array set _view $location
1185	}
1186	}
1187	$_arcball quaternion [ViewToQuaternion]
1188	if {$_settings(-isheightmap) } {
1189	DoRotate
1190	}
1191	SendCmd "camera reset"
1192	}
1193
1194	# ----------------------------------------------------------------------
1195	# USAGE: Zoom in
1196	# USAGE: Zoom out
1197	# USAGE: Zoom reset
1198	#
1199	# Called automatically when the user clicks on one of the zoom
1200	# controls for this widget. Changes the zoom for the current view.
1201	# ----------------------------------------------------------------------
1202	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1203	switch -- $option {
1204	"in" {
1205	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1206	SendCmd "camera zoom $_view(-zoom)"
1207	}
1208	"out" {
1209	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1210	SendCmd "camera zoom $_view(-zoom)"
1211	}
1212	"reset" {
1213	array set _view {
1214	-xpan 0
1215	-ypan 0
1216	-zoom 1.0
1217	}
1218	SendCmd "camera reset"
1219	}
1220	}
1221	}
1222
1223	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1224	set x $_view(-xpan)
1225	set y $_view(-ypan)
1226	SendCmd "camera pan $x $y"
1227	}
1228
1229
1230	# ----------------------------------------------------------------------
1231	# USAGE: Rotate click <x> <y>
1232	# USAGE: Rotate drag <x> <y>
1233	# USAGE: Rotate release <x> <y>
1234	#
1235	# Called automatically when the user clicks/drags/releases in the
1236	# plot area. Moves the plot according to the user's actions.
1237	# ----------------------------------------------------------------------
1238	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1239	switch -- $option {
1240	"click" {
1241	$itk_component(view) configure -cursor fleur
1242	set _click(x) $x
1243	set _click(y) $y
1244	}
1245	"drag" {
1246	if {[array size _click] == 0} {
1247	Rotate click $x $y
1248	} else {
1249	set w [winfo width $itk_component(view)]
1250	set h [winfo height $itk_component(view)]
1251	if {$w <= 0 \|\| $h <= 0} {
1252	return
1253	}
1254
1255	if {[catch {
1256	# this fails sometimes for no apparent reason
1257	set dx [expr {double($x-$_click(x))/$w}]
1258	set dy [expr {double($y-$_click(y))/$h}]
1259	}]} {
1260	return
1261	}
1262	if { $dx == 0 && $dy == 0 } {
1263	return
1264	}
1265	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1266	EventuallyRotate $q
1267	set _click(x) $x
1268	set _click(y) $y
1269	}
1270	}
1271	"release" {
1272	Rotate drag $x $y
1273	$itk_component(view) configure -cursor ""
1274	catch {unset _click}
1275	}
1276	default {
1277	error "bad option \"$option\": should be click, drag, release"
1278	}
1279	}
1280	}
1281
1282	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1283	foreach tag [CurrentDatasets -visible] {
1284	SendCmd "dataset getscalar pixel $x $y $tag"
1285	}
1286	}
1287
1288	# ----------------------------------------------------------------------
1289	# USAGE: $this Pan click x y
1290	# $this Pan drag x y
1291	# $this Pan release x y
1292	#
1293	# Called automatically when the user clicks on one of the zoom
1294	# controls for this widget. Changes the zoom for the current view.
1295	# ----------------------------------------------------------------------
1296	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1297	switch -- $option {
1298	"set" {
1299	set w [winfo width $itk_component(view)]
1300	set h [winfo height $itk_component(view)]
1301	set x [expr $x / double($w)]
1302	set y [expr $y / double($h)]
1303	set _view(-xpan) [expr $_view(-xpan) + $x]
1304	set _view(-ypan) [expr $_view(-ypan) + $y]
1305	PanCamera
1306	return
1307	}
1308	"click" {
1309	set _click(x) $x
1310	set _click(y) $y
1311	$itk_component(view) configure -cursor hand1
1312	}
1313	"drag" {
1314	if { ![info exists _click(x)] } {
1315	set _click(x) $x
1316	}
1317	if { ![info exists _click(y)] } {
1318	set _click(y) $y
1319	}
1320	set w [winfo width $itk_component(view)]
1321	set h [winfo height $itk_component(view)]
1322	set dx [expr ($_click(x) - $x)/double($w)]
1323	set dy [expr ($_click(y) - $y)/double($h)]
1324	set _click(x) $x
1325	set _click(y) $y
1326	set _view(-xpan) [expr $_view(-xpan) - $dx]
1327	set _view(-ypan) [expr $_view(-ypan) - $dy]
1328	PanCamera
1329	}
1330	"release" {
1331	Pan drag $x $y
1332	$itk_component(view) configure -cursor ""
1333	}
1334	default {
1335	error "unknown option \"$option\": should set, click, drag, or release"
1336	}
1337	}
1338	}
1339
1340	# ----------------------------------------------------------------------
1341	# USAGE: InitSettings <what> ?<value>?
1342	#
1343	# Used internally to update rendering settings whenever parameters
1344	# change in the popup settings panel. Sends the new settings off
1345	# to the back end.
1346	# ----------------------------------------------------------------------
1347	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1348	foreach spec $args {
1349	if { [info exists _settings($_first${spec})] } {
1350	# Reset global setting with dataobj specific setting
1351	set _settings($spec) $_settings($_first${spec})
1352	}
1353	AdjustSetting $spec
1354	}
1355	}
1356
1357	#
1358	# AdjustSetting --
1359	#
1360	# Changes/updates a specific setting in the widget. There are
1361	# usually user-setable option. Commands are sent to the render
1362	# server.
1363	#
1364	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1365	if { ![isconnected] } {
1366	return
1367	}
1368	switch -- $what {
1369	"-axisflymode" {
1370	set mode [$itk_component(axisflymode) value]
1371	set mode [$itk_component(axisflymode) translate $mode]
1372	set _settings($what) $mode
1373	SendCmd "axis flymode $mode"
1374	}
1375	"-axislabels" {
1376	set bool $_settings($what)
1377	SendCmd "axis labels all $bool"
1378	}
1379	"-axisminorticks" {
1380	set bool $_settings($what)
1381	SendCmd "axis minticks all $bool"
1382	}
1383	"-axisvisible" {
1384	set bool $_settings($what)
1385	SendCmd "axis visible all $bool"
1386	}
1387	"-background" {
1388	set bg [$itk_component(background) value]
1389	array set fgcolors {
1390	"black" "white"
1391	"white" "black"
1392	"grey" "black"
1393	}
1394	set fg $fgcolors($bg)
1395	configure -plotbackground $bg -plotforeground $fg
1396	$itk_component(view) delete "legend"
1397	SendCmd "screen bgcolor [Color2RGB $bg]"
1398	SendCmd "outline color [Color2RGB $fg]"
1399	SendCmd "axis color all [Color2RGB $fg]"
1400	DrawLegend
1401	}
1402	"-colormap" {
1403	set _changed($what) 1
1404	StartBufferingCommands
1405	set color [$itk_component(colormap) value]
1406	set _settings($what) $color
1407	if { $color == "none" } {
1408	if { $_settings(-colormapvisible) } {
1409	SendCmd "heightmap surface 0"
1410	set _settings(-colormapvisible) 0
1411	}
1412	} else {
1413	if { !$_settings(-colormapvisible) } {
1414	SendCmd "heightmap surface 1"
1415	set _settings(-colormapvisible) 1
1416	}
1417	SetCurrentColormap $color
1418	if {$_settings(-colormapdiscrete)} {
1419	set numColors [expr $_settings(-numisolines) + 1]
1420	SendCmd "colormap res $numColors $color"
1421	}
1422	}
1423	StopBufferingCommands
1424	EventuallyRequestLegend
1425	}
1426	"-colormapvisible" {
1427	set bool $_settings($what)
1428	SendCmd "heightmap surface $bool"
1429	}
1430	"-colormapdiscrete" {
1431	set bool $_settings($what)
1432	set numColors [expr $_settings(-numisolines) + 1]
1433	StartBufferingCommands
1434	if {$bool} {
1435	SendCmd "colormap res $numColors"
1436	# Discrete colormap requires preinterp on
1437	SendCmd "heightmap preinterp on"
1438	} else {
1439	SendCmd "colormap res default"
1440	# FIXME: add setting for preinterp (default on)
1441	SendCmd "heightmap preinterp on"
1442	}
1443	StopBufferingCommands
1444	EventuallyRequestLegend
1445	}
1446	"-edges" {
1447	set bool $_settings($what)
1448	SendCmd "heightmap edges $bool"
1449	}
1450	"-field" {
1451	set label [$itk_component(field) value]
1452	set fname [$itk_component(field) translate $label]
1453	set _settings($what) $fname
1454	if { [info exists _fields($fname)] } {
1455	foreach { label units components } $_fields($fname) break
1456	if { $components > 1 } {
1457	set _colorMode vmag
1458	} else {
1459	set _colorMode scalar
1460	}
1461	set _curFldName $fname
1462	set _curFldLabel $label
1463	} else {
1464	puts stderr "unknown field \"$fname\""
1465	return
1466	}
1467	set label ""
1468	if { $_first != "" } {
1469	set label [$_first hints label]
1470	}
1471	if { $label == "" } {
1472	if { [string match "component*" $_curFldName] } {
1473	set label Z
1474	} else {
1475	set label $_curFldLabel
1476	}
1477	}
1478	# May be a space in the axis label.
1479	SendCmd [list axis name z $label]
1480
1481	set units ""
1482	if { $_first != "" } {
1483	set units [$_first hints units]
1484	}
1485	if { $units == "" } {
1486	if { $_first != "" && [$_first hints zunits] != "" } {
1487	set units [$_first hints zunits]
1488	} elseif { [info exists _fields($_curFldName)] } {
1489	set units [lindex $_fields($_curFldName) 1]
1490	}
1491	}
1492	# May be a space in the axis units.
1493	SendCmd [list axis units z $units]
1494	# Get the new limits because the field changed.
1495	ResetAxes
1496	SendCmd "dataset scalar $_curFldName"
1497	SendCmd "heightmap colormode scalar $_curFldName"
1498	Zoom reset
1499	UpdateContourList
1500	DrawLegend
1501	}
1502	"-heightmapscale" {
1503	if { $_settings(-isheightmap) } {
1504	set scale [GetHeightmapScale]
1505	# Have to set the datasets individually because we are
1506	# tracking them in _comp2scale.
1507	foreach dataset [CurrentDatasets -all] {
1508	SendCmd "heightmap heightscale $scale $dataset"
1509	set _comp2scale($dataset) $scale
1510	}
1511	ResetAxes
1512	}
1513	}
1514	"-isheightmap" {
1515	set bool $_settings($what)
1516	set c $itk_component(view)
1517	StartBufferingCommands
1518	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1519	if { $bool } {
1520	set _settings(-heightmapscale) 50
1521	set _settings(-opacity) $_settings(-saveopacity)
1522	set _settings(-lighting) $_settings(-savelighting)
1523	set _settings(-outline) 0
1524	} else {
1525	set _settings(-heightmapscale) 0
1526	set _settings(-lighting) 0
1527	set _settings(-opacity) 100
1528	set _settings(-outline) $_settings(-saveoutline)
1529	}
1530	InitSettings -lighting -opacity -outline
1531	set scale [GetHeightmapScale]
1532	# Have to set the datasets individually because we are
1533	# tracking them in _comp2scale.
1534	foreach dataset [CurrentDatasets -all] {
1535	SendCmd "heightmap heightscale $scale $dataset"
1536	set _comp2scale($dataset) $scale
1537	}
1538	if { $bool } {
1539	$itk_component(lighting) configure -state normal
1540	$itk_component(opacity) configure -state normal
1541	$itk_component(scale) configure -state normal
1542	$itk_component(opacity_l) configure -state normal
1543	$itk_component(scale_l) configure -state normal
1544	$itk_component(outline) configure -state disabled
1545	if {$_view(-ortho)} {
1546	SendCmd "camera mode ortho"
1547	} else {
1548	SendCmd "camera mode persp"
1549	}
1550	} else {
1551	$itk_component(lighting) configure -state disabled
1552	$itk_component(opacity) configure -state disabled
1553	$itk_component(scale) configure -state disabled
1554	$itk_component(opacity_l) configure -state disabled
1555	$itk_component(scale_l) configure -state disabled
1556	$itk_component(outline) configure -state normal
1557	SendCmd "camera mode image"
1558	}
1559	if {$_settings(-stretchtofit)} {
1560	if {$scale == 0} {
1561	SendCmd "camera aspect window"
1562	} else {
1563	SendCmd "camera aspect square"
1564	}
1565	}
1566	ResetAxes
1567	if { $bool } {
1568	set q [ViewToQuaternion]
1569	$_arcball quaternion $q
1570	SendCmd "camera orient $q"
1571	} else {
1572	bind $c <ButtonPress-1> {}
1573	bind $c <B1-Motion> {}
1574	bind $c <ButtonRelease-1> {}
1575	}
1576	Zoom reset
1577	# Fix the mouse bindings for rotation/panning and the
1578	# camera mode. Ideally we'd create a bindtag for these.
1579	if { $bool } {
1580	# Bindings for rotation via mouse
1581	bind $c <ButtonPress-1> \
1582	[itcl::code $this Rotate click %x %y]
1583	bind $c <B1-Motion> \
1584	[itcl::code $this Rotate drag %x %y]
1585	bind $c <ButtonRelease-1> \
1586	[itcl::code $this Rotate release %x %y]
1587	}
1588	StopBufferingCommands
1589	}
1590	"-isolinecolor" {
1591	set color [$itk_component(isolinecolor) value]
1592	if { $color == "none" } {
1593	if { $_settings(-isolinesvisible) } {
1594	SendCmd "heightmap isolines 0"
1595	set _settings(-isolinesvisible) 0
1596	}
1597	} else {
1598	if { !$_settings(-isolinesvisible) } {
1599	SendCmd "heightmap isolines 1"
1600	set _settings(-isolinesvisible) 1
1601	}
1602	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1603	}
1604	DrawLegend
1605	}
1606	"-isolinesvisible" {
1607	set bool $_settings($what)
1608	SendCmd "heightmap isolines $bool"
1609	DrawLegend
1610	}
1611	"-legendvisible" {
1612	if { !$_settings($what) } {
1613	$itk_component(view) delete legend
1614	}
1615	DrawLegend
1616	}
1617	"-lighting" {
1618	if { $_settings(-isheightmap) } {
1619	set _settings(-savelighting) $_settings($what)
1620	set bool $_settings($what)
1621	SendCmd "heightmap lighting $bool"
1622	} else {
1623	SendCmd "heightmap lighting 0"
1624	}
1625	}
1626	"-numisolines" {
1627	set _settings($what) [$itk_component(numisolines) value]
1628	set _currentNumIsolines $_settings($what)
1629	UpdateContourList
1630	set _changed($what) 1
1631	SendCmd "heightmap contourlist [list $_contourList]"
1632	if {$_settings(-colormapdiscrete)} {
1633	set numColors [expr $_settings($what) + 1]
1634	SendCmd "colormap res $numColors"
1635	EventuallyRequestLegend
1636	} else {
1637	DrawLegend
1638	}
1639	}
1640	"-opacity" {
1641	set _changed($what) 1
1642	set val [expr $_settings($what) * 0.01]
1643	if { $_settings(-isheightmap) } {
1644	set _settings(-saveopacity) $_settings($what)
1645	SendCmd "heightmap opacity $val"
1646	} else {
1647	SendCmd "heightmap opacity 1.0"
1648	}
1649	}
1650	"-outline" {
1651	if { $_settings(-isheightmap) } {
1652	SendCmd "outline visible 0"
1653	} else {
1654	set _settings(-saveoutline) $_settings($what)
1655	set bool $_settings($what)
1656	SendCmd "outline visible $bool"
1657	}
1658	}
1659	"-stretchtofit" {
1660	set bool $_settings($what)
1661	if { $bool } {
1662	set heightScale [GetHeightmapScale]
1663	if {$heightScale == 0} {
1664	SendCmd "camera aspect window"
1665	} else {
1666	SendCmd "camera aspect square"
1667	}
1668	} else {
1669	SendCmd "camera aspect native"
1670	}
1671	Zoom reset
1672	}
1673	"-wireframe" {
1674	set bool $_settings($what)
1675	SendCmd "heightmap wireframe $bool"
1676	}
1677	"-xgrid" - "-ygrid" - "-zgrid" {
1678	set axis [string tolower [string range $what 1 1]]
1679	set bool $_settings($what)
1680	SendCmd "axis grid $axis $bool"
1681	}
1682	default {
1683	error "don't know how to fix $what"
1684	}
1685	}
1686	}
1687
1688	#
1689	# RequestLegend --
1690	#
1691	# Request a new legend from the server. The size of the legend
1692	# is determined from the height of the canvas.
1693	#
1694	# This should be called when
1695	# 1. A new current colormap is set.
1696	# 2. Window is resized.
1697	# 3. The limits of the data have changed. (Just need a redraw).
1698	# 4. Number of isolines have changed. (Just need a redraw).
1699	# 5. Legend becomes visible (Just need a redraw).
1700	#
1701	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1702	set _legendPending 0
1703	set font "Arial 8"
1704	set w 12
1705	set lineht [font metrics $font -linespace]
1706	# color ramp height = (canvas height) - (min and max value lines) - 2
1707	set h [expr {$_height - 2 * ($lineht + 2)}]
1708	set _legendHeight $h
1709
1710	set fname $_curFldName
1711	if { [string match "component*" $fname] } {
1712	set title ""
1713	} else {
1714	if { [info exists _fields($fname)] } {
1715	foreach { title units } $_fields($fname) break
1716	if { $units != "" } {
1717	set title [format "%s (%s)" $title $units]
1718	}
1719	} else {
1720	set title $fname
1721	}
1722	}
1723	# If there's a title too, substract one more line
1724	if { $title != "" } {
1725	incr h -$lineht
1726	}
1727	if { $h < 1 } {
1728	return
1729	}
1730	# Set the legend on the first heightmap dataset.
1731	if { $_currentColormap != "" } {
1732	set cmap $_currentColormap
1733	if { ![info exists _colormaps($cmap)] } {
1734	BuildColormap $cmap
1735	set _colormaps($cmap) 1
1736	}
1737	#SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1738	SendCmd "legend2 $cmap $w $h"
1739	}
1740	}
1741
1742	#
1743	# ResetAxes --
1744	#
1745	# Set axis z bounds and range
1746	#
1747	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1748	if { ![info exists _limits($_curFldName)]} {
1749	SendCmd "dataset maprange all"
1750	SendCmd "axis autorange z on"
1751	SendCmd "axis autobounds z on"
1752	return
1753	}
1754	foreach { xmin xmax } $_limits(x) break
1755	foreach { ymin ymax } $_limits(y) break
1756	foreach { vmin vmax } $_limits($_curFldName) break
1757
1758	global tcl_precision
1759	set tcl_precision 17
1760	set xr [expr $xmax - $xmin]
1761	set yr [expr $ymax - $ymin]
1762	set vr [expr $vmax - $vmin]
1763	set r [expr ($yr > $xr) ? $yr : $xr]
1764	if { $vr < 1.0e-17 } {
1765	set dataScale 1.0
1766	} else {
1767	set dataScale [expr $r / $vr]
1768	}
1769	set heightScale [GetHeightmapScale]
1770	set bmin [expr $heightScale * $dataScale * $vmin]
1771	set bmax [expr $heightScale * $dataScale * $vmax]
1772	if {$heightScale > 0} {
1773	set zpos [expr - $bmin]
1774	SendCmd "heightmap pos 0 0 $zpos"
1775	} else {
1776	SendCmd "heightmap pos 0 0 0"
1777	}
1778	set bmax [expr $bmax - $bmin]
1779	set bmin 0
1780	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1781	SendCmd "axis bounds z $bmin $bmax"
1782	SendCmd "axis range z $_limits($_curFldName)"
1783	}
1784
1785	#
1786	# SetCurrentColormap --
1787	#
1788	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1789	# Keep track of the colormaps that we build.
1790	if { $name != "none" && ![info exists _colormaps($name)] } {
1791	BuildColormap $name
1792	set _colormaps($name) 1
1793	}
1794	set _currentColormap $name
1795	SendCmd "heightmap colormap $_currentColormap"
1796	}
1797
1798	#
1799	# BuildColormap --
1800	#
1801	# Build the designated colormap on the server.
1802	#
1803	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1804	set cmap [ColorsToColormap $name]
1805	if { [llength $cmap] == 0 } {
1806	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1807	}
1808	set amap "0.0 1.0 1.0 1.0"
1809	SendCmd "colormap add $name { $cmap } { $amap }"
1810	}
1811
1812	# ----------------------------------------------------------------------
1813	# CONFIGURATION OPTION: -mode
1814	# ----------------------------------------------------------------------
1815	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1816	switch -- $itk_option(-mode) {
1817	"heightmap" {
1818	set _settings(-isheightmap) 1
1819	}
1820	"contour" {
1821	set _settings(-isheightmap) 0
1822	}
1823	default {
1824	error "unknown mode settings \"$itk_option(-mode)\""
1825	}
1826	}
1827	if { !$_reset } {
1828	AdjustSetting -isheightmap
1829	}
1830	}
1831
1832	# ----------------------------------------------------------------------
1833	# CONFIGURATION OPTION: -plotbackground
1834	# ----------------------------------------------------------------------
1835	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1836	if { [isconnected] } {
1837	set rgb [Color2RGB $itk_option(-plotbackground)]
1838	if { !$_reset } {
1839	SendCmd "screen bgcolor $rgb"
1840	}
1841	$itk_component(view) configure -background $itk_option(-plotbackground)
1842	}
1843	}
1844
1845	# ----------------------------------------------------------------------
1846	# CONFIGURATION OPTION: -plotforeground
1847	# ----------------------------------------------------------------------
1848	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1849	if { [isconnected] } {
1850	set rgb [Color2RGB $itk_option(-plotforeground)]
1851	if { !$_reset } {
1852	SendCmd "axis color all $rgb"
1853	SendCmd "outline color $rgb"
1854	}
1855	}
1856	}
1857
1858	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1859
1860	set fg [option get $itk_component(hull) font Font]
1861	#set bfg [option get $itk_component(hull) boldFont Font]
1862
1863	set inner [$itk_component(main) insert end \
1864	-title "Contour/Surface Settings" \
1865	-icon [Rappture::icon contour2]]
1866	$inner configure -borderwidth 4
1867
1868	checkbutton $inner.legend \
1869	-text "Legend" \
1870	-variable [itcl::scope _settings(-legendvisible)] \
1871	-command [itcl::code $this AdjustSetting -legendvisible] \
1872	-font "Arial 9"
1873
1874	checkbutton $inner.wireframe \
1875	-text "Wireframe" \
1876	-variable [itcl::scope _settings(-wireframe)] \
1877	-command [itcl::code $this AdjustSetting -wireframe] \
1878	-font "Arial 9"
1879
1880	itk_component add lighting {
1881	checkbutton $inner.lighting \
1882	-text "Enable Lighting" \
1883	-variable [itcl::scope _settings(-lighting)] \
1884	-command [itcl::code $this AdjustSetting -lighting] \
1885	-font "Arial 9"
1886	} {
1887	ignore -font
1888	}
1889	checkbutton $inner.edges \
1890	-text "Edges" \
1891	-variable [itcl::scope _settings(-edges)] \
1892	-command [itcl::code $this AdjustSetting -edges] \
1893	-font "Arial 9"
1894
1895	itk_component add outline {
1896	checkbutton $inner.outline \
1897	-text "Outline" \
1898	-variable [itcl::scope _settings(-outline)] \
1899	-command [itcl::code $this AdjustSetting -outline] \
1900	-font "Arial 9"
1901	} {
1902	ignore -font
1903	}
1904	checkbutton $inner.stretch \
1905	-text "Stretch to fit" \
1906	-variable [itcl::scope _settings(-stretchtofit)] \
1907	-command [itcl::code $this AdjustSetting -stretchtofit] \
1908	-font "Arial 9"
1909
1910	checkbutton $inner.isolines \
1911	-text "Isolines" \
1912	-variable [itcl::scope _settings(-isolinesvisible)] \
1913	-command [itcl::code $this AdjustSetting -isolinesvisible] \
1914	-font "Arial 9"
1915
1916	checkbutton $inner.colormapDiscrete \
1917	-text "Discrete Colormap" \
1918	-variable [itcl::scope _settings(-colormapdiscrete)] \
1919	-command [itcl::code $this AdjustSetting -colormapdiscrete] \
1920	-font "Arial 9"
1921
1922	itk_component add field_l {
1923	label $inner.field_l -text "Field" -font "Arial 9"
1924	} {
1925	ignore -font
1926	}
1927	itk_component add field {
1928	Rappture::Combobox $inner.field -width 10 -editable no
1929	}
1930	bind $inner.field <<Value>> \
1931	[itcl::code $this AdjustSetting -field]
1932
1933	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1934	itk_component add colormap {
1935	Rappture::Combobox $inner.colormap -width 10 -editable no
1936	}
1937	$inner.colormap choices insert end [GetColormapList -includeNone]
1938	$itk_component(colormap) value $_settings(-colormap)
1939	bind $inner.colormap <<Value>> \
1940	[itcl::code $this AdjustSetting -colormap]
1941
1942	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1943	itk_component add isolinecolor {
1944	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1945	}
1946	$inner.isolinecolor choices insert end \
1947	"black" "black" \
1948	"blue" "blue" \
1949	"cyan" "cyan" \
1950	"green" "green" \
1951	"grey" "grey" \
1952	"magenta" "magenta" \
1953	"orange" "orange" \
1954	"red" "red" \
1955	"white" "white" \
1956	"none" "none"
1957
1958	$itk_component(isolinecolor) value $_settings(-isolinecolor)
1959	bind $inner.isolinecolor <<Value>> \
1960	[itcl::code $this AdjustSetting -isolinecolor]
1961
1962	label $inner.background_l -text "Background Color" -font "Arial 9"
1963	itk_component add background {
1964	Rappture::Combobox $inner.background -width 10 -editable no
1965	}
1966	$inner.background choices insert end \
1967	"black" "black" \
1968	"white" "white" \
1969	"grey" "grey"
1970
1971	$itk_component(background) value "white"
1972	bind $inner.background <<Value>> \
1973	[itcl::code $this AdjustSetting -background]
1974
1975	itk_component add opacity_l {
1976	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1977	} {
1978	ignore -font
1979	}
1980	itk_component add opacity {
1981	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1982	-variable [itcl::scope _settings(-opacity)] \
1983	-showvalue off \
1984	-command [itcl::code $this AdjustSetting -opacity]
1985	}
1986	itk_component add scale_l {
1987	label $inner.scale_l -text "Scale" -font "Arial 9"
1988	} {
1989	ignore -font
1990	}
1991	itk_component add scale {
1992	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1993	-variable [itcl::scope _settings(-heightmapscale)] \
1994	-showvalue off \
1995	-command [itcl::code $this AdjustSetting -heightmapscale]
1996	}
1997	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1998	itk_component add numisolines {
1999	Rappture::Spinint $inner.numisolines \
2000	-min 0 -max 50 -font "arial 9"
2001	}
2002	$itk_component(numisolines) value $_settings(-numisolines)
2003	bind $itk_component(numisolines) <<Value>> \
2004	[itcl::code $this AdjustSetting -numisolines]
2005
2006	frame $inner.separator1 -height 2 -relief sunken -bd 1
2007	frame $inner.separator2 -height 2 -relief sunken -bd 1
2008
2009	blt::table $inner \
2010	0,0 $inner.field_l -anchor w -pady 2 \
2011	0,1 $inner.field -anchor w -pady 2 -fill x \
2012	1,0 $inner.colormap_l -anchor w -pady 2 \
2013	1,1 $inner.colormap -anchor w -pady 2 -fill x \
2014	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
2015	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
2016	3,0 $inner.background_l -anchor w -pady 2 \
2017	3,1 $inner.background -anchor w -pady 2 -fill x \
2018	4,0 $inner.numisolines_l -anchor w -pady 2 \
2019	4,1 $inner.numisolines -anchor w -pady 2 \
2020	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
2021	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
2022	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
2023	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
2024	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
2025	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
2026	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
2027	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
2028	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
2029	14,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
2030	15,0 $inner.opacity_l -anchor w -pady 2 \
2031	15,1 $inner.opacity -fill x -pady 2 \
2032	16,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
2033	16,1 $inner.scale -fill x -pady 2 -cspan 2 \
2034
2035	blt::table configure $inner r* c* -resize none
2036	blt::table configure $inner r17 c1 -resize expand
2037	}
2038
2039	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
2040
2041	set fg [option get $itk_component(hull) font Font]
2042	#set bfg [option get $itk_component(hull) boldFont Font]
2043
2044	set inner [$itk_component(main) insert end \
2045	-title "Axis Settings" \
2046	-icon [Rappture::icon axis2]]
2047	$inner configure -borderwidth 4
2048
2049	checkbutton $inner.visible \
2050	-text "Axes" \
2051	-variable [itcl::scope _settings(-axisvisible)] \
2052	-command [itcl::code $this AdjustSetting -axisvisible] \
2053	-font "Arial 9"
2054	checkbutton $inner.labels \
2055	-text "Axis Labels" \
2056	-variable [itcl::scope _settings(-axislabels)] \
2057	-command [itcl::code $this AdjustSetting -axislabels] \
2058	-font "Arial 9"
2059	label $inner.grid_l -text "Grid" -font "Arial 9"
2060	checkbutton $inner.xgrid \
2061	-text "X" \
2062	-variable [itcl::scope _settings(-xgrid)] \
2063	-command [itcl::code $this AdjustSetting -xgrid] \
2064	-font "Arial 9"
2065	checkbutton $inner.ygrid \
2066	-text "Y" \
2067	-variable [itcl::scope _settings(-ygrid)] \
2068	-command [itcl::code $this AdjustSetting -ygrid] \
2069	-font "Arial 9"
2070	checkbutton $inner.zgrid \
2071	-text "Z" \
2072	-variable [itcl::scope _settings(-zgrid)] \
2073	-command [itcl::code $this AdjustSetting -zgrid] \
2074	-font "Arial 9"
2075	checkbutton $inner.minorticks \
2076	-text "Minor Ticks" \
2077	-variable [itcl::scope _settings(-axisminorticks)] \
2078	-command [itcl::code $this AdjustSetting -axisminorticks] \
2079	-font "Arial 9"
2080
2081	label $inner.mode_l -text "Mode" -font "Arial 9"
2082
2083	itk_component add axisflymode {
2084	Rappture::Combobox $inner.mode -width 10 -editable no
2085	}
2086	$inner.mode choices insert end \
2087	"static_triad" "static" \
2088	"closest_triad" "closest" \
2089	"furthest_triad" "farthest" \
2090	"outer_edges" "outer"
2091	$itk_component(axisflymode) value $_settings(-axisflymode)
2092	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
2093
2094	blt::table $inner \
2095	0,0 $inner.visible -anchor w -cspan 4 \
2096	1,0 $inner.labels -anchor w -cspan 4 \
2097	2,0 $inner.minorticks -anchor w -cspan 4 \
2098	4,0 $inner.grid_l -anchor w \
2099	4,1 $inner.xgrid -anchor w \
2100	4,2 $inner.ygrid -anchor w \
2101	4,3 $inner.zgrid -anchor w \
2102	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2103	5,1 $inner.mode -fill x -cspan 3
2104
2105	blt::table configure $inner r* c* -resize none
2106	blt::table configure $inner r7 c6 -resize expand
2107	blt::table configure $inner r3 -height 0.125i
2108	}
2109
2110	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2111	set inner [$itk_component(main) insert end \
2112	-title "Camera Settings" \
2113	-icon [Rappture::icon camera]]
2114	$inner configure -borderwidth 4
2115
2116	label $inner.view_l -text "view" -font "Arial 9"
2117	set f [frame $inner.view]
2118	foreach side { front back left right top bottom } {
2119	button $f.$side -image [Rappture::icon view$side] \
2120	-command [itcl::code $this SetOrientation $side]
2121	Rappture::Tooltip::for $f.$side "Change the view to $side"
2122	pack $f.$side -side left
2123	}
2124
2125	blt::table $inner \
2126	0,0 $inner.view_l -anchor e -pady 2 \
2127	0,1 $inner.view -anchor w -pady 2
2128	blt::table configure $inner r0 -resize none
2129
2130	set labels { qx qy qz qw xpan ypan zoom }
2131	set row 1
2132	foreach tag $labels {
2133	label $inner.${tag}label -text $tag -font "Arial 9"
2134	entry $inner.${tag} -font "Arial 9" -bg white \
2135	-textvariable [itcl::scope _view(-$tag)]
2136	bind $inner.${tag} <Return> \
2137	[itcl::code $this camera set -${tag}]
2138	bind $inner.${tag} <KP_Enter> \
2139	[itcl::code $this camera set -${tag}]
2140	blt::table $inner \
2141	$row,0 $inner.${tag}label -anchor e -pady 2 \
2142	$row,1 $inner.${tag} -anchor w -pady 2
2143	blt::table configure $inner r$row -resize none
2144	incr row
2145	}
2146	checkbutton $inner.ortho \
2147	-text "Orthographic Projection" \
2148	-variable [itcl::scope _view(-ortho)] \
2149	-command [itcl::code $this camera set -ortho] \
2150	-font "Arial 9"
2151	blt::table $inner \
2152	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2153	blt::table configure $inner r$row -resize none
2154	incr row
2155
2156	blt::table configure $inner c* -resize none
2157	blt::table configure $inner c2 -resize expand
2158	blt::table configure $inner r$row -resize expand
2159	}
2160
2161	#
2162	# camera --
2163	#
2164	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2165	switch -- $option {
2166	"show" {
2167	puts [array get _view]
2168	}
2169	"set" {
2170	set what [lindex $args 0]
2171	set x $_view($what)
2172	set code [catch { string is double $x } result]
2173	if { $code != 0 \|\| !$result } {
2174	return
2175	}
2176	switch -- $what {
2177	"-ortho" {
2178	if {$_view($what)} {
2179	SendCmd "camera mode ortho"
2180	} else {
2181	SendCmd "camera mode persp"
2182	}
2183	}
2184	"-xpan" - "-ypan" {
2185	PanCamera
2186	}
2187	"-qx" - "-qy" - "-qz" - "-qw" {
2188	set q [ViewToQuaternion]
2189	$_arcball quaternion $q
2190	EventuallyRotate $q
2191	}
2192	"-zoom" {
2193	SendCmd "camera zoom $_view($what)"
2194	}
2195	}
2196	}
2197	}
2198	}
2199
2200	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2201	set bytes ""
2202	foreach dataobj [get] {
2203	foreach comp [$dataobj components] {
2204	set tag $dataobj-$comp
2205	set contents [$dataobj vtkdata $comp]
2206	append bytes "$contents\n"
2207	}
2208	}
2209	return [list .vtk $bytes]
2210	}
2211
2212	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2213	if { [image width $_image(download)] > 0 &&
2214	[image height $_image(download)] > 0 } {
2215	set bytes [$_image(download) data -format "jpeg -quality 100"]
2216	set bytes [Rappture::encoding::decode -as b64 $bytes]
2217	return [list .jpg $bytes]
2218	}
2219	return ""
2220	}
2221
2222	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2223	Rappture::Balloon $popup \
2224	-title "[Rappture::filexfer::label downloadWord] as..."
2225	set inner [$popup component inner]
2226	label $inner.summary -text "" -anchor w
2227	radiobutton $inner.vtk_button -text "VTK data file" \
2228	-variable [itcl::scope _downloadPopup(format)] \
2229	-font "Arial 9 " \
2230	-value vtk
2231	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2232	radiobutton $inner.image_button -text "Image File" \
2233	-variable [itcl::scope _downloadPopup(format)] \
2234	-font "Arial 9 " \
2235	-value image
2236	Rappture::Tooltip::for $inner.image_button \
2237	"Save as digital image."
2238
2239	button $inner.ok -text "Save" \
2240	-highlightthickness 0 -pady 2 -padx 3 \
2241	-command $command \
2242	-compound left \
2243	-image [Rappture::icon download]
2244
2245	button $inner.cancel -text "Cancel" \
2246	-highlightthickness 0 -pady 2 -padx 3 \
2247	-command [list $popup deactivate] \
2248	-compound left \
2249	-image [Rappture::icon cancel]
2250
2251	blt::table $inner \
2252	0,0 $inner.summary -cspan 2 \
2253	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2254	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2255	4,1 $inner.cancel -width .9i -fill y \
2256	4,0 $inner.ok -padx 2 -width .9i -fill y
2257	blt::table configure $inner r3 -height 4
2258	blt::table configure $inner r4 -pady 4
2259	raise $inner.image_button
2260	$inner.vtk_button invoke
2261	return $inner
2262	}
2263
2264	#
2265	# SetObjectStyle --
2266	#
2267	# Set the style of the heightmap/contour object. This gets calls
2268	# for each dataset once as it is loaded. It can overridden by
2269	# the user controls.
2270	#
2271	#
2272	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2273	# Parse style string.
2274	set tag $dataobj-$comp
2275	array set style {
2276	-color BCGYR
2277	-levels 10
2278	-opacity 1.0
2279	}
2280	set stylelist [$dataobj style $comp]
2281	if { $stylelist != "" } {
2282	array set style $stylelist
2283	}
2284	# This is too complicated. We want to set the colormap, number of
2285	# isolines and opacity for the dataset. They can be the default values,
2286	# the style hints loaded with the dataset, or set by user controls. As
2287	# datasets get loaded, they first use the defaults that are overidden
2288	# by the style hints. If the user changes the global controls, then that
2289	# overrides everything else. I don't know what it means when global
2290	# controls are specified as style hints by each dataset. It complicates
2291	# the code to handle aberrant cases.
2292
2293	if { $_changed(-opacity) } {
2294	set style(-opacity) [expr $_settings(-opacity) * 0.01]
2295	}
2296	if { $_changed(-numisolines) } {
2297	set style(-levels) $_settings(-numisolines)
2298	}
2299	if { $_changed(-colormap) } {
2300	set style(-color) $_settings(-colormap)
2301	}
2302	if { $_currentColormap == "" } {
2303	$itk_component(colormap) value $style(-color)
2304	}
2305	if { [info exists style(-stretchtofit)] } {
2306	set _settings(-stretchtofit) $style(-stretchtofit)
2307	AdjustSetting -stretchtofit
2308	}
2309	if { $_currentNumIsolines != $style(-levels) } {
2310	set _currentNumIsolines $style(-levels)
2311	set _settings(-numisolines) $_currentNumIsolines
2312	$itk_component(numisolines) value $_currentNumIsolines
2313	UpdateContourList
2314	DrawLegend
2315	}
2316	SendCmd "outline add $tag"
2317	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2318	SendCmd "outline visible $_settings(-outline) $tag"
2319	set scale [GetHeightmapScale]
2320	SendCmd "[list heightmap add contourlist $_contourList $scale $tag]"
2321	set _comp2scale($tag) $_settings(-heightmapscale)
2322	SendCmd "heightmap edges $_settings(-edges) $tag"
2323	SendCmd "heightmap wireframe $_settings(-wireframe) $tag"
2324	SetCurrentColormap $style(-color)
2325	set color [$itk_component(isolinecolor) value]
2326	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2327	SendCmd "heightmap lighting $_settings(-isheightmap) $tag"
2328	SendCmd "heightmap isolines $_settings(-isolinesvisible) $tag"
2329	SendCmd "heightmap surface $_settings(-colormapvisible) $tag"
2330	SendCmd "heightmap opacity $style(-opacity) $tag"
2331	set _settings(-opacity) [expr $style(-opacity) * 100.0]
2332	}
2333
2334	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2335	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2336	return 0
2337	}
2338	return 1
2339	}
2340
2341	# ----------------------------------------------------------------------
2342	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2343	#
2344	# Invoked automatically whenever the "legend" command comes in from
2345	# the rendering server. Indicates that binary image data with the
2346	# specified <size> will follow.
2347	# ----------------------------------------------------------------------
2348	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2349	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2350	if { [isconnected] } {
2351	set bytes [ReceiveBytes $size]
2352	if { ![info exists _image(legend)] } {
2353	set _image(legend) [image create photo]
2354	}
2355	$_image(legend) configure -data $bytes
2356	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2357	if { [catch {DrawLegend} errs] != 0 } {
2358	global errorInfo
2359	puts stderr "errs=$errs errorInfo=$errorInfo"
2360	}
2361	}
2362	}
2363
2364	#
2365	# DrawLegend --
2366	#
2367	# Draws the legend in the own canvas on the right side of the plot area.
2368	#
2369	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2370	set fname $_curFldName
2371	set c $itk_component(view)
2372	set w [winfo width $c]
2373	set h [winfo height $c]
2374	set font "Arial 8"
2375	set lineht [font metrics $font -linespace]
2376
2377	if { [string match "component*" $fname] } {
2378	set title ""
2379	} else {
2380	if { [info exists _fields($fname)] } {
2381	foreach { title units } $_fields($fname) break
2382	if { $units != "" } {
2383	set title [format "%s (%s)" $title $units]
2384	}
2385	} else {
2386	set title $fname
2387	}
2388	}
2389	set x [expr $w - 2]
2390	if { !$_settings(-legendvisible) } {
2391	$c delete legend
2392	return
2393	}
2394	if { [$c find withtag "legend"] == "" } {
2395	set y 2
2396	# If there's a legend title, create a text item for the title.
2397	$c create text $x $y \
2398	-anchor ne \
2399	-fill $itk_option(-plotforeground) -tags "title legend" \
2400	-font $font
2401	if { $title != "" } {
2402	incr y $lineht
2403	}
2404	$c create text $x $y \
2405	-anchor ne \
2406	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2407	-font $font
2408	incr y $lineht
2409	$c create image $x $y \
2410	-anchor ne \
2411	-image $_image(legend) -tags "colormap legend"
2412	$c create rectangle $x $y 1 1 \
2413	-fill "" -outline "" -tags "sensor legend"
2414	$c create text $x [expr {$h-2}] \
2415	-anchor se \
2416	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2417	-font $font
2418	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2419	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2420	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2421	}
2422	$c delete isoline
2423	set x2 $x
2424	set iw [image width $_image(legend)]
2425	set ih [image height $_image(legend)]
2426	set x1 [expr $x2 - ($iw*12)/10]
2427	set color [$itk_component(isolinecolor) value]
2428
2429	# Draw the isolines on the legend.
2430	array unset _isolines
2431	if { $color != "none" && [info exists _limits($_curFldName)] &&
2432	$_settings(-isolinesvisible) && $_currentNumIsolines > 0 } {
2433
2434	foreach { vmin vmax } $_limits($_curFldName) break
2435	set range [expr double($vmax - $vmin)]
2436	if { $range <= 0.0 } {
2437	set range 1.0; # Min is greater or equal to max.
2438	}
2439	set tags "isoline legend"
2440	set offset [expr 2 + $lineht]
2441	if { $title != "" } {
2442	incr offset $lineht
2443	}
2444	foreach value $_contourList {
2445	set norm [expr 1.0 - (($value - $vmin) / $range)]
2446	set y1 [expr int(round(($norm * $ih) + $offset))]
2447	for { set off 0 } { $off < 3 } { incr off } {
2448	set _isolines([expr $y1 + $off]) $value
2449	set _isolines([expr $y1 - $off]) $value
2450	}
2451	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2452	}
2453	}
2454
2455	$c bind title <ButtonPress> [itcl::code $this Combo post]
2456	$c bind title <Enter> [itcl::code $this Combo activate]
2457	$c bind title <Leave> [itcl::code $this Combo deactivate]
2458	# Reset the item coordinates according the current size of the plot.
2459	if { [info exists _limits($_curFldName)] } {
2460	foreach { vmin vmax } $_limits($_curFldName) break
2461	$c itemconfigure vmin -text [format %g $vmin]
2462	$c itemconfigure vmax -text [format %g $vmax]
2463	}
2464	set y 2
2465	# If there's a legend title, move the title to the correct position
2466	if { $title != "" } {
2467	$c itemconfigure title -text $title
2468	$c coords title $x $y
2469	incr y $lineht
2470	}
2471	$c coords vmax $x $y
2472	incr y $lineht
2473	$c coords colormap $x $y
2474	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2475	$c raise sensor
2476	$c coords vmin $x [expr {$h - 2}]
2477	}
2478
2479	#
2480	# EnterLegend --
2481	#
2482	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2483	SetLegendTip $x $y
2484	}
2485
2486	#
2487	# MotionLegend --
2488	#
2489	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2490	Rappture::Tooltip::tooltip cancel
2491	set c $itk_component(view)
2492	set cw [winfo width $c]
2493	set ch [winfo height $c]
2494	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2495	SetLegendTip $x $y
2496	}
2497	}
2498
2499	#
2500	# LeaveLegend --
2501	#
2502	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2503	Rappture::Tooltip::tooltip cancel
2504	.rappturetooltip configure -icon ""
2505	}
2506
2507	#
2508	# SetLegendTip --
2509	#
2510	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2511	set fname $_curFldName
2512	set c $itk_component(view)
2513	set w [winfo width $c]
2514	set h [winfo height $c]
2515	set font "Arial 8"
2516	set lineht [font metrics $font -linespace]
2517
2518	set ih [image height $_image(legend)]
2519	# Subtract off the offset of the color ramp from the top of the canvas
2520	set iy [expr $y - ($lineht + 2)]
2521
2522	if { [string match "component*" $fname] } {
2523	set title ""
2524	} else {
2525	if { [info exists _fields($fname)] } {
2526	foreach { title units } $_fields($fname) break
2527	if { $units != "" } {
2528	set title [format "%s (%s)" $title $units]
2529	}
2530	} else {
2531	set title $fname
2532	}
2533	}
2534	# If there's a legend title, increase the offset by the line height.
2535	if { $title != "" } {
2536	incr iy -$lineht
2537	}
2538
2539	# Make a swatch of the selected color
2540	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2541	return
2542	}
2543
2544	if { ![info exists _image(swatch)] } {
2545	set _image(swatch) [image create photo -width 24 -height 24]
2546	}
2547	set color [eval format "\#%02x%02x%02x" $pixel]
2548	$_image(swatch) put black -to 0 0 23 23
2549	$_image(swatch) put $color -to 1 1 22 22
2550
2551	# Compute the value of the point
2552	if { [info exists _limits($fname)] } {
2553	foreach { vmin vmax } $_limits($fname) break
2554	set t [expr 1.0 - (double($iy) / double($ih-1))]
2555	set value [expr $t * ($vmax - $vmin) + $vmin]
2556	} else {
2557	set value 0.0
2558	}
2559	set tipx [expr $x + 15]
2560	set tipy [expr $y - 5]
2561	.rappturetooltip configure -icon $_image(swatch)
2562	if { [info exists _isolines($y)] } {
2563	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2564	} else {
2565	Rappture::Tooltip::text $c [format "$title %g" $value]
2566	}
2567	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2568	}
2569
2570	# ----------------------------------------------------------------------
2571	# USAGE: _dropdown post
2572	# USAGE: _dropdown unpost
2573	# USAGE: _dropdown select
2574	#
2575	# Used internally to handle the dropdown list for this combobox. The
2576	# post/unpost options are invoked when the list is posted or unposted
2577	# to manage the relief of the controlling button. The select option
2578	# is invoked whenever there is a selection from the list, to assign
2579	# the value back to the gauge.
2580	# ----------------------------------------------------------------------
2581	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2582	set c $itk_component(view)
2583	switch -- $option {
2584	post {
2585	foreach { x1 y1 x2 y2 } [$c bbox title] break
2586	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2587	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2588	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2589	tk_popup $itk_component(fieldmenu) $x $y
2590	}
2591	activate {
2592	$c itemconfigure title -fill red
2593	}
2594	deactivate {
2595	$c itemconfigure title -fill $itk_option(-plotforeground)
2596	}
2597	invoke {
2598	$itk_component(field) value $_curFldLabel
2599	AdjustSetting -field
2600	}
2601	default {
2602	error "bad option \"$option\": should be post, unpost, select"
2603	}
2604	}
2605	}
2606
2607	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2608	if { $_settings(-isheightmap) } {
2609	set val $_settings(-heightmapscale)
2610	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2611	return $sval
2612	}
2613	return 0
2614	}
2615
2616	itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2617	array set positions {
2618	front "0.707107 0.707107 0 0"
2619	back "0 0 0.707107 0.707107"
2620	left "0.5 0.5 -0.5 -0.5"
2621	right "0.5 0.5 0.5 0.5"
2622	top "1 0 0 0"
2623	bottom "0 1 0 0"
2624	}
2625	foreach name { -qw -qx -qy -qz } value $positions($side) {
2626	set _view($name) $value
2627	}
2628	set q [ViewToQuaternion]
2629	$_arcball quaternion $q
2630	SendCmd "camera orient $q"
2631	SendCmd "camera reset"
2632	set _view(-xpan) 0
2633	set _view(-ypan) 0
2634	set _view(-zoom) 1.0
2635	}
2636
2637	itcl::body Rappture::VtkHeightmapViewer::UpdateContourList {} {
2638	if {$_currentNumIsolines == 0} {
2639	set _contourList ""
2640	return
2641	}
2642	if { ![info exists _limits($_curFldName)] } {
2643	return
2644	}
2645	foreach { vmin vmax } $_limits($_curFldName) break
2646	set v [blt::vector create \#auto]
2647	$v seq $vmin $vmax [expr $_currentNumIsolines+2]
2648	$v delete end 0
2649	set _contourList [$v range 0 end]
2650	blt::vector destroy $v
2651	}

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