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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 3394

Last change on this file since 3394 was 3394, checked in by gah, 12 years ago
fix up stats reporting in servers
File size: 80.2 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) 2004-2012 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 limits { dataobj }
61	public method sendto { string }
62	public method parameters {title args} {
63	# do nothing
64	}
65	public method scale {args}
66
67	protected method Connect {}
68	protected method CurrentDatasets {args}
69	protected method Disconnect {}
70	protected method DoResize {}
71	protected method DoContour {}
72	protected method DoRotate {}
73	protected method AdjustSetting {what {value ""}}
74	protected method AdjustMode {}
75	protected method InitSettings { args }
76	protected method Pan {option x y}
77	protected method Pick {x y}
78	protected method Rebuild {}
79	protected method ReceiveDataset { args }
80	protected method ReceiveImage { args }
81	protected method ReceiveLegend { colormap title min max size }
82	protected method Rotate {option x y}
83	protected method SendCmd {string}
84	protected method SendCmdNoWait {string}
85	protected method Zoom {option}
86
87	# The following methods are only used by this class.
88	private method BuildAxisTab {}
89	private method BuildCameraTab {}
90	private method BuildColormap { name colors }
91	private method ResetColormap { color }
92	private method BuildContourTab {}
93	private method BuildDownloadPopup { widget command }
94	private method Combo { option }
95	private method ConvertToVtkData { dataobj comp }
96	private method DrawLegend { title }
97	private method EnterLegend { x y }
98	private method EventuallyContour { numContours }
99	private method EventuallyRequestLegend {}
100	private method EventuallyResize { w h }
101	private method EventuallyRotate { q }
102	private method GetImage { args }
103	private method GetVtkData { args }
104	private method IsValidObject { dataobj }
105	private method LeaveLegend {}
106	private method MotionLegend { x y }
107	private method PanCamera {}
108	private method RequestLegend {}
109	private method SetCurrentColormap { stylelist }
110	private method SetLegendTip { x y }
111	private method SetObjectStyle { dataobj comp }
112	private method GetHeightmapScale {}
113	private method EnterIsoline { x y value }
114	private method LeaveIsoline {}
115	private method SetIsolineTip { x y value }
116	private method ResetAxes {}
117
118	private variable _arcball ""
119	private variable _outbuf ; # buffer for outgoing commands
120
121	private variable _dlist "" ; # list of data objects
122	private variable _obj2datasets
123	private variable _obj2ovride ; # maps dataobj => style override
124	private variable _comp2scale; # maps dataset to the heightmap scale.
125	private variable _datasets ; # contains all the dataobj-component
126	; # datasets in the server
127	private variable _colormaps ; # contains all the colormaps
128	; # in the server.
129
130	# The name of the current colormap used. The colormap is global to all
131	# heightmaps displayed.
132	private variable _currentColormap "" ;
133
134	private variable _click ; # info used for rotate operations
135	private variable _limits ; # 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 _initialStyle ""; # First found style in dataobjects.
140	private variable _reset 1; # Indicates if camera needs to be reset
141	# to starting position.
142	private variable _beforeConnect 1; # Indicates if camera needs to be reset
143	# to starting position.
144
145	private variable _first "" ; # This is the topmost dataset.
146	private variable _start 0
147	private variable _buffering 0
148	private variable _title ""
149
150	common _downloadPopup; # download options from popup
151	private common _hardcopy
152	private variable _width 0
153	private variable _height 0
154	private variable _resizePending 0
155	private variable _contourPending 0
156	private variable _rotatePending 0
157	private variable _legendPending 0
158	private variable _fieldNames {}
159	private variable _fields
160	private variable _curFldName "Default"
161	private variable _numContours 0
162	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
163	}
164
165	itk::usual VtkHeightmapViewer {
166	keep -background -foreground -cursor -font
167	keep -plotbackground -plotforeground -mode
168	}
169
170	# ----------------------------------------------------------------------
171	# CONSTRUCTOR
172	# ----------------------------------------------------------------------
173	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
174	set _serverType "vtkvis"
175
176	# Rebuild event
177	$_dispatcher register !rebuild
178	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
179
180	# Resize event
181	$_dispatcher register !resize
182	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
183
184	# Recontour event
185	$_dispatcher register !contour
186	$_dispatcher dispatch $this !contour "[itcl::code $this DoContour]; list"
187
188	# Rotate event
189	$_dispatcher register !rotate
190	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
191
192	# Legend event
193	$_dispatcher register !legend
194	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
195
196	#
197	# Populate parser with commands handle incoming requests
198	#
199	$_parser alias image [itcl::code $this ReceiveImage]
200	$_parser alias dataset [itcl::code $this ReceiveDataset]
201	$_parser alias legend [itcl::code $this ReceiveLegend]
202	$_parser alias viserror [itcl::code $this ReceiveError]
203
204	# Initialize the view to some default parameters.
205	array set _view {
206	qw 0.36
207	qx 0.25
208	qy 0.50
209	qz 0.70
210	zoom 1.0
211	xpan 0
212	ypan 0
213	ortho 1
214	}
215	set _arcball [blt::arcball create 100 100]
216	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
217	$_arcball quaternion $q
218
219	array set _settings [subst {
220	axisFlymode "static"
221	axisMinorTicks 1
222	stretchToFit 0
223	axisLabels 1
224	axisVisible 1
225	axisXGrid 0
226	axisYGrid 0
227	axisZGrid 0
228	colormapVisible 1
229	edges 0
230	field "Default"
231	heightmapOpacity 100
232	heightmapScale 50
233	isHeightmap 0
234	isolines 10
235	isolinesVisible 1
236	isolineColor black
237	legendVisible 1
238	lighting 0
239	outline 0
240	wireframe 0
241	}]
242
243	itk_component add view {
244	canvas $itk_component(plotarea).view \
245	-highlightthickness 0 -borderwidth 0
246	} {
247	usual
248	ignore -highlightthickness -borderwidth -background
249	}
250
251	itk_component add fieldmenu {
252	menu $itk_component(plotarea).menu \
253	-relief flat \
254	-tearoff no
255	} {
256	usual
257	ignore -background -foreground -relief -tearoff
258	}
259	set c $itk_component(view)
260	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
261	bind $c <4> [itcl::code $this Zoom in 0.25]
262	bind $c <5> [itcl::code $this Zoom out 0.25]
263	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
264	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
265	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
266	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
267	bind $c <Enter> "focus %W"
268	bind $c <Control-F1> [itcl::code $this ToggleConsole]
269
270	# Fix the scrollregion in case we go off screen
271	$c configure -scrollregion [$c bbox all]
272
273	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
274	set _map(cwidth) -1
275	set _map(cheight) -1
276	set _map(zoom) 1.0
277	set _map(original) ""
278
279	set f [$itk_component(main) component controls]
280	itk_component add reset {
281	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
282	-highlightthickness 0 \
283	-image [Rappture::icon reset-view] \
284	-command [itcl::code $this Zoom reset]
285	} {
286	usual
287	ignore -highlightthickness
288	}
289	pack $itk_component(reset) -side top -padx 2 -pady 2
290	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
291
292	itk_component add zoomin {
293	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
294	-highlightthickness 0 \
295	-image [Rappture::icon zoom-in] \
296	-command [itcl::code $this Zoom in]
297	} {
298	usual
299	ignore -highlightthickness
300	}
301	pack $itk_component(zoomin) -side top -padx 2 -pady 2
302	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
303
304	itk_component add zoomout {
305	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
306	-highlightthickness 0 \
307	-image [Rappture::icon zoom-out] \
308	-command [itcl::code $this Zoom out]
309	} {
310	usual
311	ignore -highlightthickness
312	}
313	pack $itk_component(zoomout) -side top -padx 2 -pady 2
314	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
315
316	itk_component add mode {
317	Rappture::PushButton $f.mode \
318	-onimage [Rappture::icon surface] \
319	-offimage [Rappture::icon surface] \
320	-variable [itcl::scope _settings(isHeightmap)] \
321	-command [itcl::code $this AdjustSetting isHeightmap] \
322	}
323	Rappture::Tooltip::for $itk_component(mode) \
324	"Toggle the surface/contour on/off"
325	pack $itk_component(mode) -padx 2 -pady 2
326
327	if { [catch {
328	BuildContourTab
329	BuildAxisTab
330	BuildCameraTab
331	} errs] != 0 } {
332	global errorInfo
333	puts stderr "errs=$errs errorInfo=$errorInfo"
334	}
335	set _image(legend) [image create photo]
336
337	# Hack around the Tk panewindow. The problem is that the requested
338	# size of the 3d view isn't set until an image is retrieved from
339	# the server. So the panewindow uses the tiny size.
340	set w 10000
341	pack forget $itk_component(view)
342	blt::table $itk_component(plotarea) \
343	0,0 $itk_component(view) -fill both -reqwidth $w
344	blt::table configure $itk_component(plotarea) c1 -resize none
345
346	# Bindings for panning via mouse
347	bind $itk_component(view) <ButtonPress-2> \
348	[itcl::code $this Pan click %x %y]
349	bind $itk_component(view) <B2-Motion> \
350	[itcl::code $this Pan drag %x %y]
351	bind $itk_component(view) <ButtonRelease-2> \
352	[itcl::code $this Pan release %x %y]
353
354	bind $itk_component(view) <ButtonRelease-3> \
355	[itcl::code $this Pick %x %y]
356
357	# Bindings for panning via keyboard
358	bind $itk_component(view) <KeyPress-Left> \
359	[itcl::code $this Pan set -10 0]
360	bind $itk_component(view) <KeyPress-Right> \
361	[itcl::code $this Pan set 10 0]
362	bind $itk_component(view) <KeyPress-Up> \
363	[itcl::code $this Pan set 0 -10]
364	bind $itk_component(view) <KeyPress-Down> \
365	[itcl::code $this Pan set 0 10]
366	bind $itk_component(view) <Shift-KeyPress-Left> \
367	[itcl::code $this Pan set -2 0]
368	bind $itk_component(view) <Shift-KeyPress-Right> \
369	[itcl::code $this Pan set 2 0]
370	bind $itk_component(view) <Shift-KeyPress-Up> \
371	[itcl::code $this Pan set 0 -2]
372	bind $itk_component(view) <Shift-KeyPress-Down> \
373	[itcl::code $this Pan set 0 2]
374
375	# Bindings for zoom via keyboard
376	bind $itk_component(view) <KeyPress-Prior> \
377	[itcl::code $this Zoom out]
378	bind $itk_component(view) <KeyPress-Next> \
379	[itcl::code $this Zoom in]
380
381	bind $itk_component(view) <Enter> "focus $itk_component(view)"
382
383	if {[string equal "x11" [tk windowingsystem]]} {
384	# Bindings for zoom via mouse
385	bind $itk_component(view) <4> [itcl::code $this Zoom out]
386	bind $itk_component(view) <5> [itcl::code $this Zoom in]
387	}
388
389	set _image(download) [image create photo]
390
391	eval itk_initialize $args
392	Connect
393	set _beforeConnect 0
394	}
395
396	# ----------------------------------------------------------------------
397	# DESTRUCTOR
398	# ----------------------------------------------------------------------
399	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
400	Disconnect
401	image delete $_image(plot)
402	image delete $_image(download)
403	catch { blt::arcball destroy $_arcball }
404	}
405
406	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
407	if { $_width < 2 } {
408	set _width 500
409	}
410	if { $_height < 2 } {
411	set _height 500
412	}
413	set _start [clock clicks -milliseconds]
414	SendCmd "screen size [expr $_width - 20] $_height"
415	EventuallyRequestLegend
416	set _resizePending 0
417	}
418
419	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
420	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
421	SendCmd "camera orient $q"
422	set _rotatePending 0
423	}
424
425	itcl::body Rappture::VtkHeightmapViewer::DoContour {} {
426	foreach dataset [CurrentDatasets -all] {
427	foreach {dataobj comp} [split $dataset -] break
428	#SendCmd "heightmap numcontours $_numContours $dataset"
429	}
430	set _contourPending 0
431	}
432
433	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
434	if { !$_legendPending } {
435	set _legendPending 1
436	$_dispatcher event -idle !legend
437	}
438	}
439
440	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
441	set _width $w
442	set _height $h
443	$_arcball resize $w $h
444	if { !$_resizePending } {
445	set _resizePending 1
446	$_dispatcher event -after 400 !resize
447	}
448	}
449
450	itcl::body Rappture::VtkHeightmapViewer::EventuallyContour { numContours } {
451	set _numContours $numContours
452	if { !$_contourPending } {
453	set _contourPending 1
454	$_dispatcher event -after 600 !contour
455	}
456	}
457
458	set rotate_delay 100
459
460	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
461	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
462	if { !$_rotatePending } {
463	set _rotatePending 1
464	global rotate_delay
465	$_dispatcher event -after $rotate_delay !rotate
466	}
467	}
468
469	# ----------------------------------------------------------------------
470	# USAGE: add <dataobj> ?<settings>?
471	#
472	# Clients use this to add a data object to the plot. The optional
473	# <settings> are used to configure the plot. Allowed settings are
474	# -color, -brightness, -width, -linestyle, and -raise.
475	# ----------------------------------------------------------------------
476	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
477	array set params {
478	-color auto
479	-width 1
480	-linestyle solid
481	-brightness 0
482	-raise 0
483	-description ""
484	-param ""
485	-type ""
486	}
487	array set params $settings
488	set params(-description) ""
489	set params(-param) ""
490	foreach {opt val} $settings {
491	if {![info exists params($opt)]} {
492	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
493	}
494	set params($opt) $val
495	}
496	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
497	# can't handle -autocolors yet
498	set params(-color) white
499	}
500	set pos [lsearch -exact $dataobj $_dlist]
501	if {$pos < 0} {
502	lappend _dlist $dataobj
503	}
504	set _obj2ovride($dataobj-color) $params(-color)
505	set _obj2ovride($dataobj-width) $params(-width)
506	set _obj2ovride($dataobj-raise) $params(-raise)
507	$_dispatcher event -idle !rebuild
508	}
509
510
511	# ----------------------------------------------------------------------
512	# USAGE: delete ?<dataobj1> <dataobj2> ...?
513	#
514	# Clients use this to delete a dataobj from the plot. If no dataobjs
515	# are specified, then all dataobjs are deleted. No data objects are
516	# deleted. They are only removed from the display list.
517	#
518	# ----------------------------------------------------------------------
519	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
520	if { [llength $args] == 0} {
521	set args $_dlist
522	}
523	# Delete all specified dataobjs
524	set changed 0
525	foreach dataobj $args {
526	set pos [lsearch -exact $_dlist $dataobj]
527	if { $pos < 0 } {
528	continue; # Don't know anything about it.
529	}
530	# Remove it from the dataobj list.
531	set _dlist [lreplace $_dlist $pos $pos]
532	array unset _obj2ovride $dataobj-*
533	array unset _settings $dataobj-*
534	# Append to the end of the dataobj list.
535	#lappend _dlist $dataobj
536	set changed 1
537	}
538	# If anything changed, then rebuild the plot
539	if { $changed } {
540	$_dispatcher event -idle !rebuild
541	}
542	}
543
544	# ----------------------------------------------------------------------
545	# USAGE: get ?-objects?
546	# USAGE: get ?-visible?
547	# USAGE: get ?-image view?
548	#
549	# Clients use this to query the list of objects being plotted, in
550	# order from bottom to top of this result. The optional "-image"
551	# flag can also request the internal images being shown.
552	# ----------------------------------------------------------------------
553	itcl::body Rappture::VtkHeightmapViewer::get {args} {
554	if {[llength $args] == 0} {
555	set args "-objects"
556	}
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	# USAGE: scale ?<data1> <data2> ...?
617	#
618	# Sets the default limits for the overall plot according to the
619	# limits of the data for all of the given <data> objects. This
620	# accounts for all objects--even those not showing on the screen.
621	# Because of this, the limits are appropriate for all objects as
622	# the user scans through data in the ResultSet viewer.
623	# ----------------------------------------------------------------------
624	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
625	foreach dataobj $args {
626	array set bounds [limits $dataobj]
627	foreach axis { x y v } {
628	foreach {min max} $bounds($axis) break
629	if { ![info exists _limits($axis)] } {
630	set _limits($axis) [list $min $max]
631	continue
632	}
633	foreach {amin amax} $_limits($axis) break
634	if { $amin > $min } {
635	set amin $min
636	}
637	if { $amax < $max } {
638	set amax $max
639	}
640	set _limits($axis) [list $amin $amax]
641	}
642	}
643	}
644
645	# ----------------------------------------------------------------------
646	# USAGE: download coming
647	# USAGE: download controls <downloadCommand>
648	# USAGE: download now
649	#
650	# Clients use this method to create a downloadable representation
651	# of the plot. Returns a list of the form {ext string}, where
652	# "ext" is the file extension (indicating the type of data) and
653	# "string" is the data itself.
654	# ----------------------------------------------------------------------
655	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
656	switch $option {
657	coming {
658	if {[catch {
659	blt::winop snap $itk_component(plotarea) $_image(download)
660	}]} {
661	$_image(download) configure -width 1 -height 1
662	$_image(download) put #000000
663	}
664	}
665	controls {
666	set popup .vtkviewerdownload
667	if { ![winfo exists .vtkviewerdownload] } {
668	set inner [BuildDownloadPopup $popup [lindex $args 0]]
669	} else {
670	set inner [$popup component inner]
671	}
672	set _downloadPopup(image_controls) $inner.image_frame
673	set num [llength [get]]
674	set num [expr {($num == 1) ? "1 result" : "$num results"}]
675	set word [Rappture::filexfer::label downloadWord]
676	$inner.summary configure -text "$word $num in the following format:"
677	update idletasks ;# Fix initial sizes
678	return $popup
679	}
680	now {
681	set popup .vtkviewerdownload
682	if {[winfo exists .vtkviewerdownload]} {
683	$popup deactivate
684	}
685	switch -- $_downloadPopup(format) {
686	"image" {
687	return [$this GetImage [lindex $args 0]]
688	}
689	"vtk" {
690	return [$this GetVtkData [lindex $args 0]]
691	}
692	}
693	return ""
694	}
695	default {
696	error "bad option \"$option\": should be coming, controls, now"
697	}
698	}
699	}
700
701	# ----------------------------------------------------------------------
702	# USAGE: Connect ?<host:port>,<host:port>...?
703	#
704	# Clients use this method to establish a connection to a new
705	# server, or to reestablish a connection to the previous server.
706	# Any existing connection is automatically closed.
707	# ----------------------------------------------------------------------
708	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
709	global readyForNextFrame
710	set readyForNextFrame 1
711	set _reset 1
712	set _hosts [GetServerList "vtkvis"]
713	if { "" == $_hosts } {
714	return 0
715	}
716	set result [VisViewer::Connect $_hosts]
717	if { $result } {
718	set w [winfo width $itk_component(view)]
719	set h [winfo height $itk_component(view)]
720	EventuallyResize $w $h
721	}
722	return $result
723	}
724
725	#
726	# isconnected --
727	#
728	# Indicates if we are currently connected to the visualization server.
729	#
730	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
731	return [VisViewer::IsConnected]
732	}
733
734	#
735	# disconnect --
736	#
737	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
738	Disconnect
739	set _reset 1
740	}
741
742	#
743	# Disconnect --
744	#
745	# Clients use this method to disconnect from the current rendering
746	# server.
747	#
748	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
749	VisViewer::Disconnect
750
751	$_dispatcher cancel !rebuild
752	$_dispatcher cancel !resize
753	$_dispatcher cancel !contour
754	$_dispatcher cancel !rotate
755	$_dispatcher cancel !legend
756	# disconnected -- no more data sitting on server
757	set _outbuf ""
758	array unset _datasets
759	array unset _data
760	array unset _colormaps
761	array unset _obj2datasets
762	global readyForNextFrame
763	set readyForNextFrame 1
764	}
765
766	#
767	# sendto --
768	#
769	itcl::body Rappture::VtkHeightmapViewer::sendto { bytes } {
770	SendBytes "$bytes\n"
771	}
772
773	#
774	# SendCmd
775	#
776	# Send commands off to the rendering server. If we're currently
777	# sending data objects to the server, buffer the commands to be
778	# sent later.
779	#
780	itcl::body Rappture::VtkHeightmapViewer::SendCmd {string} {
781	if { $_buffering } {
782	append _outbuf $string "\n"
783	} else {
784	SendBytes "$string\n"
785	}
786	}
787
788	#
789	# SendCmdNoWait
790	#
791	# Send commands off to the rendering server. If we're currently
792	# sending data objects to the server, buffer the commands to be
793	# sent later.
794	#
795	itcl::body Rappture::VtkHeightmapViewer::SendCmdNoWait {string} {
796	if { $_buffering } {
797	append _outbuf $string "\n"
798	} else {
799	SendBytes "$string\n"
800	}
801	}
802
803	# ----------------------------------------------------------------------
804	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
805	#
806	# Invoked automatically whenever the "image" command comes in from
807	# the rendering server. Indicates that binary image data with the
808	# specified <size> will follow.
809	# ----------------------------------------------------------------------
810	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
811	global readyForNextFrame
812	set readyForNextFrame 1
813	array set info {
814	-token "???"
815	-bytes 0
816	-type image
817	}
818	array set info $args
819	set bytes [ReceiveBytes $info(-bytes)]
820	if { $info(-type) == "image" } {
821	if 0 {
822	set f [open "last.ppm" "w"]
823	puts $f $bytes
824	close $f
825	}
826	$_image(plot) configure -data $bytes
827	set time [clock seconds]
828	set date [clock format $time]
829	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
830	if { $_start > 0 } {
831	set finish [clock clicks -milliseconds]
832	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
833	set _start 0
834	}
835	} elseif { $info(type) == "print" } {
836	set tag $this-print-$info(-token)
837	set _hardcopy($tag) $bytes
838	}
839	}
840
841	#
842	# ReceiveDataset --
843	#
844	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
845	if { ![isconnected] } {
846	return
847	}
848	set option [lindex $args 0]
849	switch -- $option {
850	"scalar" {
851	set option [lindex $args 1]
852	switch -- $option {
853	"world" {
854	foreach { x y z value tag } [lrange $args 2 end] break
855	}
856	"pixel" {
857	foreach { x y value tag } [lrange $args 2 end] break
858	}
859	}
860	}
861	"vector" {
862	set option [lindex $args 1]
863	switch -- $option {
864	"world" {
865	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
866	}
867	"pixel" {
868	foreach { x y vx vy vz tag } [lrange $args 2 end] break
869	}
870	}
871	}
872	"names" {
873	foreach { name } [lindex $args 1] {
874	#puts stderr "Dataset: $name"
875	}
876	}
877	default {
878	error "unknown dataset option \"$option\" from server"
879	}
880	}
881	}
882
883	# ----------------------------------------------------------------------
884	# USAGE: Rebuild
885	#
886	# Called automatically whenever something changes that affects the
887	# data in the widget. Clears any existing data and rebuilds the
888	# widget to display new data.
889	# ----------------------------------------------------------------------
890	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
891	set w [winfo width $itk_component(view)]
892	set h [winfo height $itk_component(view)]
893	if { $w < 2 \|\| $h < 2 } {
894	$_dispatcher event -idle !rebuild
895	return
896	}
897
898	set _buffering 1
899	# Turn on buffering of commands to the server. We don't want to
900	# be preempted by a server disconnect/reconnect (which automatically
901	# generates a new call to Rebuild).
902	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
903	set _width $w
904	set _height $h
905	$_arcball resize $w $h
906	DoResize
907	if { $_settings(stretchToFit) } {
908	Adjustsetting stretchToFit
909	}
910	}
911	if { $_reset } {
912	if 1 {
913	# Tell the server the name of the tool, the version, and dataset
914	# that we are rendering. Have to do it here because we don't know
915	# what data objects are using the renderer until be get here.
916	global env
917
918	set info {}
919	set user "???"
920	if { [info exists env(USER)] } {
921	set user $env(USER)
922	}
923	set session "???"
924	if { [info exists env(SESSION)] } {
925	set session $env(SESSION)
926	}
927	lappend info "hub" [exec hostname]
928	lappend info "client" "vtkheightmapviewer"
929	lappend info "user" $user
930	lappend info "session" $session
931	SendCmd "clientinfo [list $info]"
932	}
933	InitSettings isHeightmap background
934	#
935	# Reset the camera and other view parameters
936	#
937	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
938	SendCmd "axis lrot z 90"
939	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
940	$_arcball quaternion $q
941	if {$_settings(isHeightmap) } {
942	SendCmd "camera reset"
943	if { $_view(ortho)} {
944	SendCmd "camera mode ortho"
945	} else {
946	SendCmd "camera mode persp"
947	}
948	}
949	DoRotate
950	PanCamera
951	}
952	set _first ""
953
954	#SendCmd "imgflush"
955
956	set _first ""
957	# Start off with no datasets are visible.
958	SendCmd "dataset visible 0"
959	set scale [GetHeightmapScale]
960	foreach dataobj [get -objects] {
961	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
962	set _first $dataobj
963	}
964	scale $dataobj
965	set _obj2datasets($dataobj) ""
966	foreach comp [$dataobj components] {
967	set tag $dataobj-$comp
968	if { ![info exists _datasets($tag)] } {
969	set bytes [$dataobj vtkdata $comp]
970	if 0 {
971	set f [open /tmp/vtkheightmap.vtk "w"]
972	puts $f $bytes
973	close $f
974	}
975	set length [string length $bytes]
976	if 1 {
977	set info {}
978	lappend info "tool_id" [$dataobj hints toolId]
979	lappend info "tool_name" [$dataobj hints toolName]
980	lappend info "tool_version" [$dataobj hints toolRevision]
981	lappend info "tool_title" [$dataobj hints toolTitle]
982	lappend info "dataset_label" [$dataobj hints label]
983	lappend info "dataset_size" $length
984	lappend info "dataset_tag" $tag
985	SendCmd [list "clientinfo" $info]
986	}
987	append _outbuf "dataset add $tag data follows $length\n"
988	append _outbuf $bytes
989	set _datasets($tag) 1
990	SetObjectStyle $dataobj $comp
991	}
992	lappend _obj2datasets($dataobj) $tag
993	if { [info exists _obj2ovride($dataobj-raise)] } {
994	SendCmd "heightmap visible 1 $tag"
995	}
996	if { ![info exists _comp2scale($tag)] \|\|
997	$_comp2scale($tag) != $scale } {
998	SendCmd "heightmap heightscale $scale $tag"
999	set _comp2scale($tag) $scale
1000	}
1001	}
1002	}
1003	if { $_first != "" && $_reset } {
1004	set _fieldNames [$_first hints fieldnames]
1005	set _fieldUnits [$_first hints fieldunits]
1006	set _fieldLabels [$_first hints fieldlabels]
1007	$itk_component(field) choices delete 0 end
1008	$itk_component(fieldmenu) delete 0 end
1009	array unset _fields
1010	foreach name $_fieldNames title $_fieldLabels units $_fieldUnits {
1011	SendCmd "dataset maprange explicit $_limits(v) $name"
1012	if { $title == "" } {
1013	set title $name
1014	}
1015	$itk_component(field) choices insert end "$name" "$title"
1016	$itk_component(fieldmenu) add radiobutton -label "$title" \
1017	-value $title -variable [itcl::scope _curFldName] \
1018	-selectcolor red \
1019	-activebackground $itk_option(-plotbackground) \
1020	-activeforeground $itk_option(-plotforeground) \
1021	-font "Arial 8" \
1022	-command [itcl::code $this Combo invoke]
1023	set _fields($name) [list $title $units]
1024	set _curFldName $name
1025	}
1026	if { [array size _fields] == 1 } {
1027	set _curFldName $_fieldLabels
1028	if { $_curFldName == "" } {
1029	puts stderr "no default name from field"
1030	set _curFldName "Default"
1031	}
1032	}
1033	$itk_component(field) value $_curFldName
1034	}
1035	InitSettings stretchToFit
1036
1037	if { $_reset } {
1038	SendCmd "axis tickpos outside"
1039	foreach axis { x y z } {
1040	SendCmd "axis lformat $axis %g"
1041	}
1042	foreach axis { x y z } {
1043	set label [$_first hints ${axis}label]
1044	if { $label == "" } {
1045	if {$axis == "z"} {
1046	if { $_curFldName == "component" } {
1047	set label [string toupper $axis]
1048	} else {
1049	set label [lindex $_fields($_curFldName) 0]
1050	}
1051	} else {
1052	set label [string toupper $axis]
1053	}
1054	}
1055	# May be a space in the axis label.
1056	SendCmd [list axis name $axis $label]
1057
1058	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1059	set units [lindex $_fields($_curFldName) 1]
1060	} else {
1061	set units [$_first hints ${axis}units]
1062	}
1063	if { $units != "" } {
1064	# May be a space in the axis units.
1065	SendCmd [list axis units $axis $units]
1066	}
1067	}
1068	#
1069	# Reset the camera and other view parameters
1070	#
1071	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
1072	ResetAxes
1073	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1074	$_arcball quaternion $q
1075	if {$_settings(isHeightmap) } {
1076	SendCmd "camera reset"
1077	if { $_view(ortho)} {
1078	SendCmd "camera mode ortho"
1079	} else {
1080	SendCmd "camera mode persp"
1081	}
1082	}
1083	DoRotate
1084	PanCamera
1085	InitSettings axisXGrid axisYGrid axisZGrid \
1086	axisVisible axisLabels
1087	InitSettings heightmapOpacity \
1088	heightmapScale lighting \
1089	colormap field outline \
1090	edges heightmapOpacity wireframe
1091	set _reset 0
1092	}
1093	global readyForNextFrame
1094	set readyForNextFrame 0; # Don't advance to the next frame
1095	set _buffering 0; # Turn off buffering.
1096
1097	# Actually write the commands to the server socket. If it fails, we don't
1098	# care. We're finished here.
1099	blt::busy hold $itk_component(hull)
1100	sendto $_outbuf;
1101	blt::busy release $itk_component(hull)
1102	set _outbuf ""; # Clear the buffer.
1103	}
1104
1105	# ----------------------------------------------------------------------
1106	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1107	#
1108	# Returns a list of server IDs for the current datasets being displayed. This
1109	# is normally a single ID, but it might be a list of IDs if the current data
1110	# object has multiple components.
1111	# ----------------------------------------------------------------------
1112	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1113	set flag [lindex $args 0]
1114	switch -- $flag {
1115	"-all" {
1116	if { [llength $args] > 1 } {
1117	error "CurrentDatasets: can't specify dataobj after \"-all\""
1118	}
1119	set dlist [get -objects]
1120	}
1121	"-visible" {
1122	if { [llength $args] > 1 } {
1123	set dlist {}
1124	set args [lrange $args 1 end]
1125	foreach dataobj $args {
1126	if { [info exists _obj2ovride($dataobj-raise)] } {
1127	lappend dlist $dataobj
1128	}
1129	}
1130	} else {
1131	set dlist [get -visible]
1132	}
1133	}
1134	default {
1135	set dlist $args
1136	}
1137	}
1138	set rlist ""
1139	foreach dataobj $dlist {
1140	foreach comp [$dataobj components] {
1141	set tag $dataobj-$comp
1142	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1143	lappend rlist $tag
1144	}
1145	}
1146	}
1147	return $rlist
1148	}
1149
1150	# ----------------------------------------------------------------------
1151	# USAGE: Zoom in
1152	# USAGE: Zoom out
1153	# USAGE: Zoom reset
1154	#
1155	# Called automatically when the user clicks on one of the zoom
1156	# controls for this widget. Changes the zoom for the current view.
1157	# ----------------------------------------------------------------------
1158	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1159	switch -- $option {
1160	"in" {
1161	set _view(zoom) [expr {$_view(zoom)*1.25}]
1162	SendCmd "camera zoom $_view(zoom)"
1163	}
1164	"out" {
1165	set _view(zoom) [expr {$_view(zoom)*0.8}]
1166	SendCmd "camera zoom $_view(zoom)"
1167	}
1168	"reset" {
1169	array set _view {
1170	qw 0.36
1171	qx 0.25
1172	qy 0.50
1173	qz 0.70
1174	zoom 1.0
1175	xpan 0
1176	ypan 0
1177	}
1178	SendCmd "camera reset all"
1179	if { $_first != "" } {
1180	set location [$_first hints camera]
1181	if { $location != "" } {
1182	array set _view $location
1183	}
1184	}
1185	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1186	$_arcball quaternion $q
1187	DoRotate
1188	}
1189	}
1190	}
1191
1192	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1193	set x $_view(xpan)
1194	set y $_view(ypan)
1195	SendCmd "camera pan $x $y"
1196	}
1197
1198
1199	# ----------------------------------------------------------------------
1200	# USAGE: Rotate click <x> <y>
1201	# USAGE: Rotate drag <x> <y>
1202	# USAGE: Rotate release <x> <y>
1203	#
1204	# Called automatically when the user clicks/drags/releases in the
1205	# plot area. Moves the plot according to the user's actions.
1206	# ----------------------------------------------------------------------
1207	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1208	switch -- $option {
1209	"click" {
1210	$itk_component(view) configure -cursor fleur
1211	set _click(x) $x
1212	set _click(y) $y
1213	}
1214	"drag" {
1215	if {[array size _click] == 0} {
1216	Rotate click $x $y
1217	} else {
1218	set w [winfo width $itk_component(view)]
1219	set h [winfo height $itk_component(view)]
1220	if {$w <= 0 \|\| $h <= 0} {
1221	return
1222	}
1223
1224	if {[catch {
1225	# this fails sometimes for no apparent reason
1226	set dx [expr {double($x-$_click(x))/$w}]
1227	set dy [expr {double($y-$_click(y))/$h}]
1228	}]} {
1229	return
1230	}
1231	if { $dx == 0 && $dy == 0 } {
1232	return
1233	}
1234	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1235	EventuallyRotate $q
1236	set _click(x) $x
1237	set _click(y) $y
1238	}
1239	}
1240	"release" {
1241	Rotate drag $x $y
1242	$itk_component(view) configure -cursor ""
1243	catch {unset _click}
1244	}
1245	default {
1246	error "bad option \"$option\": should be click, drag, release"
1247	}
1248	}
1249	}
1250
1251	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1252	foreach tag [CurrentDatasets -visible] {
1253	SendCmd "dataset getscalar pixel $x $y $tag"
1254	}
1255	}
1256
1257	# ----------------------------------------------------------------------
1258	# USAGE: $this Pan click x y
1259	# $this Pan drag x y
1260	# $this Pan release x y
1261	#
1262	# Called automatically when the user clicks on one of the zoom
1263	# controls for this widget. Changes the zoom for the current view.
1264	# ----------------------------------------------------------------------
1265	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1266	switch -- $option {
1267	"set" {
1268	set w [winfo width $itk_component(view)]
1269	set h [winfo height $itk_component(view)]
1270	set x [expr $x / double($w)]
1271	set y [expr $y / double($h)]
1272	set _view(xpan) [expr $_view(xpan) + $x]
1273	set _view(ypan) [expr $_view(ypan) + $y]
1274	PanCamera
1275	return
1276	}
1277	"click" {
1278	set _click(x) $x
1279	set _click(y) $y
1280	$itk_component(view) configure -cursor hand1
1281	}
1282	"drag" {
1283	if { ![info exists _click(x)] } {
1284	set _click(x) $x
1285	}
1286	if { ![info exists _click(y)] } {
1287	set _click(y) $y
1288	}
1289	set w [winfo width $itk_component(view)]
1290	set h [winfo height $itk_component(view)]
1291	set dx [expr ($_click(x) - $x)/double($w)]
1292	set dy [expr ($_click(y) - $y)/double($h)]
1293	set _click(x) $x
1294	set _click(y) $y
1295	set _view(xpan) [expr $_view(xpan) - $dx]
1296	set _view(ypan) [expr $_view(ypan) - $dy]
1297	PanCamera
1298	}
1299	"release" {
1300	Pan drag $x $y
1301	$itk_component(view) configure -cursor ""
1302	}
1303	default {
1304	error "unknown option \"$option\": should set, click, drag, or release"
1305	}
1306	}
1307	}
1308
1309	# ----------------------------------------------------------------------
1310	# USAGE: InitSettings <what> ?<value>?
1311	#
1312	# Used internally to update rendering settings whenever parameters
1313	# change in the popup settings panel. Sends the new settings off
1314	# to the back end.
1315	# ----------------------------------------------------------------------
1316	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1317	foreach spec $args {
1318	if { [info exists _settings($_first-$spec)] } {
1319	# Reset global setting with dataobj specific setting
1320	set _settings($spec) $_settings($_first-$spec)
1321	}
1322	AdjustSetting $spec
1323	}
1324	}
1325
1326	#
1327	# AdjustSetting --
1328	#
1329	# Changes/updates a specific setting in the widget. There are
1330	# usually user-setable option. Commands are sent to the render
1331	# server.
1332	#
1333	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1334	if { $_beforeConnect } {
1335	return
1336	}
1337	switch -- $what {
1338	"heightmapOpacity" {
1339	set val $_settings(heightmapOpacity)
1340	set sval [expr { 0.01 * double($val) }]
1341	foreach dataset [CurrentDatasets -all] {
1342	SendCmd "heightmap opacity $sval $dataset"
1343	}
1344	}
1345	"wireframe" {
1346	set bool $_settings(wireframe)
1347	foreach dataset [CurrentDatasets -all] {
1348	SendCmd "heightmap wireframe $bool $dataset"
1349	}
1350	}
1351	"colormapVisible" {
1352	set bool $_settings(colormapVisible)
1353	foreach dataset [CurrentDatasets -all] {
1354	SendCmd "heightmap surface $bool $dataset"
1355	}
1356	}
1357	"isolinesVisible" {
1358	set bool $_settings(isolinesVisible)
1359	foreach dataset [CurrentDatasets -all] {
1360	SendCmd "heightmap isolines $bool $dataset"
1361	}
1362	}
1363	"lighting" {
1364	if { $_settings(isHeightmap) } {
1365	set bool $_settings(lighting)
1366	SendCmd "heightmap lighting $bool"
1367	} else {
1368	SendCmd "heightmap lighting 0"
1369	}
1370	}
1371	"edges" {
1372	set bool $_settings(edges)
1373	foreach dataset [CurrentDatasets -all] {
1374	SendCmd "heightmap edges $bool $dataset"
1375	}
1376	}
1377	"axisVisible" {
1378	set bool $_settings(axisVisible)
1379	SendCmd "axis visible all $bool"
1380	}
1381	"axisLabels" {
1382	set bool $_settings(axisLabels)
1383	SendCmd "axis labels all $bool"
1384	}
1385	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1386	set axis [string tolower [string range $what 4 4]]
1387	set bool $_settings($what)
1388	SendCmd "axis grid $axis $bool"
1389	}
1390	"axisFlymode" {
1391	set mode [$itk_component(axisflymode) value]
1392	set mode [$itk_component(axisflymode) translate $mode]
1393	set _settings($what) $mode
1394	SendCmd "axis flymode $mode"
1395	}
1396	"axisMinorTicks" {
1397	set bool $_settings(axisMinorTicks)
1398	foreach axis { x y z } {
1399	SendCmd "axis minticks ${axis} $bool"
1400	}
1401	}
1402	"isolines" {
1403	set n $_settings($what)
1404	EventuallyContour $n
1405	}
1406	"isolinesVisible" {
1407	set bool $_settings($what)
1408	foreach dataset [CurrentDatasets -all] {
1409	SendCmd "heightmap isolines $bool $dataset"
1410	}
1411	}
1412	"colormapVisible" {
1413	set bool $_settings($what)
1414	foreach dataset [CurrentDatasets -all] {
1415	SendCmd "heightmap surface $bool $dataset"
1416	}
1417	}
1418	"background" {
1419	set bgcolor [$itk_component(background) value]
1420	array set fgcolors {
1421	"black" "white"
1422	"white" "black"
1423	"grey" "black"
1424	}
1425	configure -plotbackground $bgcolor \
1426	-plotforeground $fgcolors($bgcolor)
1427	$itk_component(view) delete "legend"
1428	DrawLegend $_curFldName
1429	}
1430	"isolineColor" {
1431	set color [$itk_component(isolinecolor) value]
1432	if { $color == "none" } {
1433	if { $_settings(isolinesVisible) } {
1434	SendCmd "heightmap isolines 0"
1435	set _settings(isolinesVisible) 0
1436	}
1437	} else {
1438	if { !$_settings(isolinesVisible) } {
1439	SendCmd "heightmap isolines 1"
1440	set _settings(isolinesVisible) 1
1441	}
1442	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1443	}
1444	DrawLegend $_curFldName
1445	}
1446	"colormap" {
1447	set color [$itk_component(colormap) value]
1448	set _settings(colormap) $color
1449	if { $color == "none" } {
1450	if { $_settings(colormapVisible) } {
1451	SendCmd "heightmap surface 0"
1452	set _settings(colormapVisible) 0
1453	}
1454	} else {
1455	if { !$_settings(colormapVisible) } {
1456	SendCmd "heightmap surface 1"
1457	set _settings(colormapVisible) 1
1458	}
1459	ResetColormap $color
1460	SendCmd "heightmap colormap $_currentColormap"
1461	}
1462	SendCmdNoWait "heightmap colormode scalar $_curFldName"
1463	SendCmdNoWait "dataset scalar $_curFldName"
1464	EventuallyRequestLegend
1465	}
1466	"heightmapOpacity" {
1467	set val $_settings(heightmapOpacity)
1468	set sval [expr { 0.01 * double($val) }]
1469	foreach dataset [CurrentDatasets -all] {
1470	SendCmd "heightmap opacity $sval $dataset"
1471	}
1472	}
1473	"heightmapScale" {
1474	if { $_settings(isHeightmap) } {
1475	set scale [GetHeightmapScale]
1476	foreach dataset [CurrentDatasets -all] {
1477	SendCmd "heightmap heightscale $scale $dataset"
1478	set _comp2scale($dataset) $scale
1479	}
1480	ResetAxes
1481	}
1482	}
1483	"lighting" {
1484	if { $_settings(isHeightmap) } {
1485	set bool $_settings(lighting)
1486	SendCmd "heightmap lighting $bool"
1487	} else {
1488	SendCmd "heightmap lighting 0"
1489	}
1490	}
1491	"field" {
1492	set new [$itk_component(field) value]
1493	set value [$itk_component(field) translate $new]
1494	set _settings(field) $value
1495	if { [info exists _fields($new)] } {
1496	set _colorMode scalar
1497	set _curFldName $new
1498	} else {
1499	puts stderr "unknown field \"$new\""
1500	return
1501	}
1502	EventuallyRequestLegend
1503	}
1504	"stretchToFit" {
1505	set bool $_settings(stretchToFit)
1506	if { $bool } {
1507	set heightScale [GetHeightmapScale]
1508	if {$heightScale == 0} {
1509	SendCmd "camera aspect window"
1510	} else {
1511	SendCmd "camera aspect square"
1512	}
1513	} else {
1514	SendCmd "camera aspect native"
1515	}
1516	}
1517	"outline" {
1518	set bool $_settings(outline)
1519	SendCmd "dataset outline $bool"
1520	}
1521	"isHeightmap" {
1522	set bool $_settings(isHeightmap)
1523	if { $bool } {
1524	$itk_component(lighting) configure -state normal
1525	} else {
1526	$itk_component(lighting) configure -state disabled
1527	}
1528	set _settings(lighting) $bool
1529	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1530	if { $bool } {
1531	set _settings(heightmapScale) 50
1532	} else {
1533	set _settings(heightmapScale) 50
1534	}
1535	SendCmd "heightmap lighting $bool"
1536	set scale [GetHeightmapScale]
1537	foreach dataset [CurrentDatasets -all] {
1538	SendCmd "heightmap heightscale $scale $dataset"
1539	set _comp2scale($dataset) $scale
1540	}
1541	if {$_settings(stretchToFit)} {
1542	if {$scale == 0} {
1543	SendCmd "camera aspect window"
1544	} else {
1545	SendCmd "camera aspect square"
1546	}
1547	}
1548	ResetAxes
1549	# Fix the mouse bindings for rotation/panning and the
1550	# camera mode. Ideally we'd create a bindtag for these.
1551	set c $itk_component(view)
1552	if { $bool } {
1553	# Bindings for rotation via mouse
1554	bind $c <ButtonPress-1> \
1555	[itcl::code $this Rotate click %x %y]
1556	bind $c <B1-Motion> \
1557	[itcl::code $this Rotate drag %x %y]
1558	bind $c <ButtonRelease-1> \
1559	[itcl::code $this Rotate release %x %y]
1560	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1561	$_arcball quaternion $q
1562	if {$_view(ortho)} {
1563	SendCmd "camera mode ortho"
1564	} else {
1565	SendCmd "camera mode persp"
1566	}
1567	SendCmd "camera orient $q"
1568	} else {
1569	set _settings(heightmapScale) 0
1570	bind $c <ButtonPress-1> {}
1571	bind $c <B1-Motion> {}
1572	bind $c <ButtonRelease-1> {}
1573	SendCmd "camera mode image"
1574	}
1575	}
1576	"legendVisible" {
1577	if { !$_settings(legendVisible) } {
1578	$itk_component(view) delete legend
1579	}
1580	DrawLegend $_curFldName
1581	}
1582	default {
1583	error "don't know how to fix $what"
1584	}
1585	}
1586	}
1587
1588	#
1589	# RequestLegend --
1590	#
1591	# Request a new legend from the server. The size of the legend
1592	# is determined from the height of the canvas.
1593	#
1594	# This should be called when
1595	# 1. A new current colormap is set.
1596	# 2. Window is resized.
1597	# 3. The limits of the data have changed. (Just need a redraw).
1598	# 4. Number of isolines have changed. (Just need a redraw).
1599	# 5. Legend becomes visible (Just need a redraw).
1600	#
1601	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1602	set _legendPending 0
1603	set font "Arial 8"
1604	set lineht [font metrics $font -linespace]
1605	set c $itk_component(view)
1606	set w 12
1607	set h [expr {$_height - 2 * ($lineht + 2)}]
1608	if { $h < 1} {
1609	return
1610	}
1611	if { [info exists _fields($_curFldName)] } {
1612	set title [lindex $_fields($_curFldName) 0]
1613	if { $title != "component" } {
1614	set h [expr $h - ($lineht + 2)]
1615	}
1616	} else {
1617	return
1618	}
1619	# Set the legend on the first heightmap dataset.
1620	if { $_currentColormap != "" } {
1621	set cmap $_currentColormap
1622	SendCmdNoWait "legend $cmap scalar $_curFldName {} $w $h 0"
1623	SendCmdNoWait "heightmap colormode scalar $_curFldName"
1624	SendCmdNoWait "dataset scalar $_curFldName"
1625	}
1626	}
1627
1628	#
1629	# ResetAxes --
1630	#
1631	# Set axis z bounds and range
1632	#
1633	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1634	if { ![info exists _limits(v)] \|\| ![info exists _fields($_curFldName)]} {
1635	SendCmd "dataset maprange all"
1636	SendCmd "axis autorange z on"
1637	SendCmd "axis autobounds z on"
1638	return
1639	}
1640	foreach { vmin vmax } $_limits(v) break
1641	foreach { xmin xmax } $_limits(x) break
1642	foreach { ymin ymax } $_limits(y) break
1643	set dataRange [expr $vmax - $vmin]
1644	set boundsRange [expr $xmax - $xmin]
1645	set r [expr $ymax - $ymin]
1646	if {$r > $boundsRange} {
1647	set boundsRange $r
1648	}
1649	if {$dataRange < 1.0e-10} {
1650	set dataScale 1.0
1651	} else {
1652	set dataScale [expr $boundsRange / $dataRange]
1653	}
1654	set heightScale [GetHeightmapScale]
1655	set bMin [expr $heightScale * $dataScale * $vmin]
1656	set bMax [expr $heightScale * $dataScale * $vmax]
1657	set fieldName [lindex $_fields($_curFldName) 0]
1658	SendCmd "dataset maprange explicit $_limits(v) $fieldName"
1659	SendCmd "axis bounds z $bMin $bMax"
1660	SendCmd "axis range z $_limits(v)"
1661	}
1662
1663	#
1664	# SetCurrentColormap --
1665	#
1666	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { stylelist } {
1667	array set style {
1668	-color BCGYR
1669	-levels 10
1670	-opacity 1.0
1671	}
1672	array set style $stylelist
1673
1674	set name "$style(-color):$style(-levels):$style(-opacity)"
1675	if { ![info exists _colormaps($name)] } {
1676	set stylelist [array get style]
1677	BuildColormap $name $stylelist
1678	set _colormaps($name) $stylelist
1679	}
1680	set _currentColormap $name
1681	}
1682
1683
1684	#
1685	# BuildColormap --
1686	#
1687	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name stylelist } {
1688	array set style $stylelist
1689	set cmap [ColorsToColormap $style(-color)]
1690	if { [llength $cmap] == 0 } {
1691	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1692	}
1693	if { ![info exists _settings(heightmapOpacity)] } {
1694	set _settings(heightmapOpacity) $style(-opacity)
1695	}
1696	set max $_settings(heightmapOpacity)
1697
1698	set wmap "0.0 1.0 1.0 1.0"
1699	SendCmd "colormap add $name { $cmap } { $wmap }"
1700	}
1701
1702	# ----------------------------------------------------------------------
1703	# CONFIGURATION OPTION: -mode
1704	# ----------------------------------------------------------------------
1705	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1706	switch -- $itk_option(-mode) {
1707	"heightmap" {
1708	set _settings(isHeightmap) 1
1709	}
1710	"contour" {
1711	set _settings(isHeightmap) 0
1712	}
1713	default {
1714	error "unknown mode settings \"$itk_option(-mode)\""
1715	}
1716	}
1717	AdjustSetting isHeightmap
1718	}
1719
1720	# ----------------------------------------------------------------------
1721	# CONFIGURATION OPTION: -plotbackground
1722	# ----------------------------------------------------------------------
1723	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1724	if { [isconnected] } {
1725	set rgb [Color2RGB $itk_option(-plotbackground)]
1726	SendCmd "screen bgcolor $rgb"
1727	$itk_component(view) configure -background $itk_option(-plotbackground)
1728	}
1729	}
1730
1731	# ----------------------------------------------------------------------
1732	# CONFIGURATION OPTION: -plotforeground
1733	# ----------------------------------------------------------------------
1734	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1735	if { [isconnected] } {
1736	set rgb [Color2RGB $itk_option(-plotforeground)]
1737	SendCmd "dataset color $rgb"
1738	SendCmd "axis color all $rgb"
1739	}
1740	}
1741
1742	itcl::body Rappture::VtkHeightmapViewer::limits { dataobj } {
1743	lappend limits x [$dataobj limits x]
1744	lappend limits y [$dataobj limits y]
1745	lappend limits v [$dataobj limits v]
1746	return $limits
1747	}
1748
1749	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1750
1751	set fg [option get $itk_component(hull) font Font]
1752	#set bfg [option get $itk_component(hull) boldFont Font]
1753
1754	set inner [$itk_component(main) insert end \
1755	-title "Contour Settings" \
1756	-icon [Rappture::icon volume-on]]
1757	$inner configure -borderwidth 4
1758
1759	checkbutton $inner.legend \
1760	-text "Legend" \
1761	-variable [itcl::scope _settings(legendVisible)] \
1762	-command [itcl::code $this AdjustSetting legendVisible] \
1763	-font "Arial 9"
1764
1765	checkbutton $inner.wireframe \
1766	-text "Wireframe" \
1767	-variable [itcl::scope _settings(wireframe)] \
1768	-command [itcl::code $this AdjustSetting wireframe] \
1769	-font "Arial 9"
1770
1771	itk_component add lighting {
1772	checkbutton $inner.lighting \
1773	-text "Enable Lighting" \
1774	-variable [itcl::scope _settings(lighting)] \
1775	-command [itcl::code $this AdjustSetting lighting] \
1776	-font "Arial 9"
1777	} {
1778	ignore -font
1779	}
1780
1781	checkbutton $inner.edges \
1782	-text "Edges" \
1783	-variable [itcl::scope _settings(edges)] \
1784	-command [itcl::code $this AdjustSetting edges] \
1785	-font "Arial 9"
1786
1787	checkbutton $inner.outline \
1788	-text "Outline" \
1789	-variable [itcl::scope _settings(outline)] \
1790	-command [itcl::code $this AdjustSetting outline] \
1791	-font "Arial 9"
1792
1793	checkbutton $inner.stretch \
1794	-text "Stretch to fit" \
1795	-variable [itcl::scope _settings(stretchToFit)] \
1796	-command [itcl::code $this AdjustSetting stretchToFit] \
1797	-font "Arial 9"
1798
1799	label $inner.field_l -text "Field" -font "Arial 9"
1800	itk_component add field {
1801	Rappture::Combobox $inner.field -width 10 -editable no
1802	}
1803	bind $inner.field <<Value>> \
1804	[itcl::code $this AdjustSetting field]
1805
1806	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1807	itk_component add colormap {
1808	Rappture::Combobox $inner.colormap -width 10 -editable no
1809	}
1810	$inner.colormap choices insert end \
1811	"BCGYR" "BCGYR" \
1812	"BGYOR" "BGYOR" \
1813	"blue" "blue" \
1814	"blue-to-brown" "blue-to-brown" \
1815	"blue-to-orange" "blue-to-orange" \
1816	"blue-to-grey" "blue-to-grey" \
1817	"green-to-magenta" "green-to-magenta" \
1818	"greyscale" "greyscale" \
1819	"nanohub" "nanohub" \
1820	"rainbow" "rainbow" \
1821	"spectral" "spectral" \
1822	"ROYGB" "ROYGB" \
1823	"RYGCB" "RYGCB" \
1824	"brown-to-blue" "brown-to-blue" \
1825	"grey-to-blue" "grey-to-blue" \
1826	"orange-to-blue" "orange-to-blue" \
1827	"none" "none"
1828
1829	$itk_component(colormap) value "BCGYR"
1830	bind $inner.colormap <<Value>> \
1831	[itcl::code $this AdjustSetting colormap]
1832
1833	label $inner.isolinecolor_l -text "Isolines" -font "Arial 9"
1834	itk_component add isolinecolor {
1835	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1836	}
1837	$inner.isolinecolor choices insert end \
1838	"black" "black" \
1839	"blue" "blue" \
1840	"cyan" "cyan" \
1841	"green" "green" \
1842	"grey" "grey" \
1843	"magenta" "magenta" \
1844	"orange" "orange" \
1845	"red" "red" \
1846	"white" "white" \
1847	"none" "none"
1848
1849	$itk_component(isolinecolor) value "black"
1850	bind $inner.isolinecolor <<Value>> \
1851	[itcl::code $this AdjustSetting isolineColor]
1852
1853	label $inner.background_l -text "Background" -font "Arial 9"
1854	itk_component add background {
1855	Rappture::Combobox $inner.background -width 10 -editable no
1856	}
1857	$inner.background choices insert end \
1858	"black" "black" \
1859	"white" "white" \
1860	"grey" "grey"
1861
1862	$itk_component(background) value "white"
1863	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1864
1865	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1866	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1867	-variable [itcl::scope _settings(heightmapOpacity)] \
1868	-width 10 \
1869	-showvalue off \
1870	-command [itcl::code $this AdjustSetting heightmapOpacity]
1871
1872	label $inner.scale_l -text "Scale" -font "Arial 9"
1873	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1874	-variable [itcl::scope _settings(heightmapScale)] \
1875	-width 10 \
1876	-showvalue off \
1877	-command [itcl::code $this AdjustSetting heightmapScale]
1878
1879	blt::table $inner \
1880	0,0 $inner.colormap_l -anchor w -pady 2 \
1881	0,1 $inner.colormap -anchor w -pady 2 -fill x \
1882	1,0 $inner.isolinecolor_l -anchor w -pady 2 \
1883	1,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
1884	2,0 $inner.background_l -anchor w -pady 2 \
1885	2,1 $inner.background -anchor w -pady 2 -fill x \
1886	4,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1887	5,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
1888	6,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1889	7,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1890	8,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1891	9,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
1892	10,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1893	11,0 $inner.opacity_l -anchor w -pady 2 \
1894	11,1 $inner.opacity -fill x -pady 2 \
1895	12,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
1896	12,1 $inner.scale -fill x -pady 2 -cspan 2 \
1897
1898	if { [array size _fields] > 1 } {
1899	blt::table $inner \
1900	3,0 $inner.field_l -anchor w -pady 2 \
1901	3,1 $inner.field -anchor w -pady 2 -fill x
1902	}
1903	blt::table configure $inner r* c* -resize none
1904	blt::table configure $inner r13 c1 -resize expand
1905	}
1906
1907	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
1908
1909	set fg [option get $itk_component(hull) font Font]
1910	#set bfg [option get $itk_component(hull) boldFont Font]
1911
1912	set inner [$itk_component(main) insert end \
1913	-title "Axis Settings" \
1914	-icon [Rappture::icon axis1]]
1915	$inner configure -borderwidth 4
1916
1917	checkbutton $inner.visible \
1918	-text "Axes" \
1919	-variable [itcl::scope _settings(axisVisible)] \
1920	-command [itcl::code $this AdjustSetting axisVisible] \
1921	-font "Arial 9"
1922	checkbutton $inner.labels \
1923	-text "Axis Labels" \
1924	-variable [itcl::scope _settings(axisLabels)] \
1925	-command [itcl::code $this AdjustSetting axisLabels] \
1926	-font "Arial 9"
1927	label $inner.grid_l -text "Grid" -font "Arial 9"
1928	checkbutton $inner.xgrid \
1929	-text "X" \
1930	-variable [itcl::scope _settings(axisXGrid)] \
1931	-command [itcl::code $this AdjustSetting axisXGrid] \
1932	-font "Arial 9"
1933	checkbutton $inner.ygrid \
1934	-text "Y" \
1935	-variable [itcl::scope _settings(axisYGrid)] \
1936	-command [itcl::code $this AdjustSetting axisYGrid] \
1937	-font "Arial 9"
1938	checkbutton $inner.zgrid \
1939	-text "Z" \
1940	-variable [itcl::scope _settings(axisZGrid)] \
1941	-command [itcl::code $this AdjustSetting axisZGrid] \
1942	-font "Arial 9"
1943	checkbutton $inner.minorticks \
1944	-text "Minor Ticks" \
1945	-variable [itcl::scope _settings(axisMinorTicks)] \
1946	-command [itcl::code $this AdjustSetting axisMinorTicks] \
1947	-font "Arial 9"
1948
1949
1950	label $inner.mode_l -text "Mode" -font "Arial 9"
1951
1952	itk_component add axisflymode {
1953	Rappture::Combobox $inner.mode -width 10 -editable no
1954	}
1955	$inner.mode choices insert end \
1956	"static_triad" "static" \
1957	"closest_triad" "closest" \
1958	"furthest_triad" "furthest" \
1959	"outer_edges" "outer"
1960	$itk_component(axisflymode) value "static"
1961	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlymode]
1962
1963	blt::table $inner \
1964	0,0 $inner.visible -anchor w -cspan 4 \
1965	1,0 $inner.labels -anchor w -cspan 4 \
1966	2,0 $inner.minorticks -anchor w -cspan 4 \
1967	4,0 $inner.grid_l -anchor w \
1968	4,1 $inner.xgrid -anchor w \
1969	4,2 $inner.ygrid -anchor w \
1970	4,3 $inner.zgrid -anchor w \
1971	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1972	5,1 $inner.mode -fill x -cspan 3
1973
1974	blt::table configure $inner r* c* -resize none
1975	blt::table configure $inner r7 c6 -resize expand
1976	blt::table configure $inner r3 -height 0.125i
1977	}
1978
1979
1980	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
1981	set inner [$itk_component(main) insert end \
1982	-title "Camera Settings" \
1983	-icon [Rappture::icon camera]]
1984	$inner configure -borderwidth 4
1985
1986	set labels { qx qy qz qw xpan ypan zoom }
1987	set row 0
1988	foreach tag $labels {
1989	label $inner.${tag}label -text $tag -font "Arial 9"
1990	entry $inner.${tag} -font "Arial 9" -bg white \
1991	-textvariable [itcl::scope _view($tag)]
1992	bind $inner.${tag} <KeyPress-Return> \
1993	[itcl::code $this camera set ${tag}]
1994	blt::table $inner \
1995	$row,0 $inner.${tag}label -anchor e -pady 2 \
1996	$row,1 $inner.${tag} -anchor w -pady 2
1997	blt::table configure $inner r$row -resize none
1998	incr row
1999	}
2000	checkbutton $inner.ortho \
2001	-text "Orthographic Projection" \
2002	-variable [itcl::scope _view(ortho)] \
2003	-command [itcl::code $this camera set ortho] \
2004	-font "Arial 9"
2005	blt::table $inner \
2006	$row,0 $inner.ortho -columnspan 2 -anchor w -pady 2
2007	blt::table configure $inner r$row -resize none
2008	incr row
2009
2010	blt::table configure $inner c0 c1 -resize none
2011	blt::table configure $inner c2 -resize expand
2012	blt::table configure $inner r$row -resize expand
2013	}
2014
2015	#
2016	# camera --
2017	#
2018	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2019	switch -- $option {
2020	"show" {
2021	puts [array get _view]
2022	}
2023	"set" {
2024	set who [lindex $args 0]
2025	set x $_view($who)
2026	set code [catch { string is double $x } result]
2027	if { $code != 0 \|\| !$result } {
2028	return
2029	}
2030	switch -- $who {
2031	"ortho" {
2032	if {$_view(ortho)} {
2033	SendCmd "camera mode ortho"
2034	} else {
2035	SendCmd "camera mode persp"
2036	}
2037	}
2038	"xpan" - "ypan" {
2039	PanCamera
2040	}
2041	"qx" - "qy" - "qz" - "qw" {
2042	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2043	$_arcball quaternion $q
2044	EventuallyRotate $q
2045	}
2046	"zoom" {
2047	SendCmd "camera zoom $_view(zoom)"
2048	}
2049	}
2050	}
2051	}
2052	}
2053
2054	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2055	set bytes ""
2056	foreach dataobj [get] {
2057	foreach comp [$dataobj components] {
2058	set tag $dataobj-$comp
2059	set contents [ConvertToVtkData $dataobj $comp]
2060	#set contents [$dataobj vtkdata $comp]
2061	append bytes "$contents\n\n"
2062	}
2063	}
2064	return [list .vtk $bytes]
2065	}
2066
2067	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2068	if { [image width $_image(download)] > 0 &&
2069	[image height $_image(download)] > 0 } {
2070	set bytes [$_image(download) data -format "jpeg -quality 100"]
2071	set bytes [Rappture::encoding::decode -as b64 $bytes]
2072	return [list .jpg $bytes]
2073	}
2074	return ""
2075	}
2076
2077	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2078	Rappture::Balloon $popup \
2079	-title "[Rappture::filexfer::label downloadWord] as..."
2080	set inner [$popup component inner]
2081	label $inner.summary -text "" -anchor w
2082	radiobutton $inner.vtk_button -text "VTK data file" \
2083	-variable [itcl::scope _downloadPopup(format)] \
2084	-font "Arial 9 " \
2085	-value vtk
2086	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2087	radiobutton $inner.image_button -text "Image File" \
2088	-variable [itcl::scope _downloadPopup(format)] \
2089	-font "Arial 9 " \
2090	-value image
2091	Rappture::Tooltip::for $inner.image_button \
2092	"Save as digital image."
2093
2094	button $inner.ok -text "Save" \
2095	-highlightthickness 0 -pady 2 -padx 3 \
2096	-command $command \
2097	-compound left \
2098	-image [Rappture::icon download]
2099
2100	button $inner.cancel -text "Cancel" \
2101	-highlightthickness 0 -pady 2 -padx 3 \
2102	-command [list $popup deactivate] \
2103	-compound left \
2104	-image [Rappture::icon cancel]
2105
2106	blt::table $inner \
2107	0,0 $inner.summary -cspan 2 \
2108	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2109	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2110	4,1 $inner.cancel -width .9i -fill y \
2111	4,0 $inner.ok -padx 2 -width .9i -fill y
2112	blt::table configure $inner r3 -height 4
2113	blt::table configure $inner r4 -pady 4
2114	raise $inner.image_button
2115	$inner.vtk_button invoke
2116	return $inner
2117	}
2118
2119	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2120	# Parse style string.
2121	set tag $dataobj-$comp
2122	array set style {
2123	-color BCGYR
2124	-edges 0
2125	-edgecolor black
2126	-lighting 1
2127	-linewidth 1.0
2128	-levels 10
2129	-visible 1
2130	}
2131	if { $_currentColormap == "" } {
2132	set stylelist [$dataobj style $comp]
2133	if { $stylelist != "" } {
2134	array set style $stylelist
2135	set stylelist [array get style]
2136	SetCurrentColormap $stylelist
2137	}
2138	$itk_component(colormap) value $style(-color)
2139	}
2140	set _numContours $style(-levels)
2141	set scale [GetHeightmapScale]
2142	SendCmd "heightmap add numcontours $_numContours $scale $tag"
2143	set _comp2scale($tag) $_settings(heightmapScale)
2144	SendCmd "heightmap edges $_settings(edges) $tag"
2145	SendCmd "heightmap wireframe $_settings(wireframe) $tag"
2146	SendCmd "heightmap colormap $_currentColormap $tag"
2147	}
2148
2149	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2150	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2151	return 0
2152	}
2153	return 1
2154	}
2155
2156	# ----------------------------------------------------------------------
2157	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2158	#
2159	# Invoked automatically whenever the "legend" command comes in from
2160	# the rendering server. Indicates that binary image data with the
2161	# specified <size> will follow.
2162	# ----------------------------------------------------------------------
2163	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2164	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2165	set _title $title
2166	regsub {\(mag\)} $title "" _title
2167	if { [isconnected] } {
2168	set bytes [ReceiveBytes $size]
2169	if { ![info exists _image(legend)] } {
2170	set _image(legend) [image create photo]
2171	}
2172	$_image(legend) configure -data $bytes
2173	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2174	if { [catch {DrawLegend $_title} errs] != 0 } {
2175	global errorInfo
2176	puts stderr "errs=$errs errorInfo=$errorInfo"
2177	}
2178	}
2179	}
2180
2181	#
2182	# DrawLegend --
2183	#
2184	# Draws the legend in it's own canvas which resides to the right
2185	# of the contour plot area.
2186	#
2187	itcl::body Rappture::VtkHeightmapViewer::DrawLegend { name } {
2188	set c $itk_component(view)
2189	set w [winfo width $c]
2190	set h [winfo height $c]
2191	set font "Arial 8"
2192	set lineht [font metrics $font -linespace]
2193
2194	if { $name == "component" } {
2195	set title ""
2196	} else {
2197	if { [info exists _fields($name)] } {
2198	foreach { title units } $_fields($name) break
2199	if { $units != "" } {
2200	set title [format "%s (%s)" $title $units]
2201	}
2202	} else {
2203	set title $name
2204	}
2205	}
2206	set x [expr $w - 2]
2207	if { !$_settings(legendVisible) } {
2208	$c delete legend
2209	return
2210	}
2211	if { [$c find withtag "legend"] == "" } {
2212	set y 2
2213	# If there's a legend title, create a text item for the title.
2214	if { $title != "" } {
2215	$c create text $x $y \
2216	-anchor ne \
2217	-fill $itk_option(-plotforeground) -tags "title legend" \
2218	-font $font
2219	incr y $lineht
2220	}
2221	$c create text $x $y \
2222	-anchor ne \
2223	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2224	-font $font
2225	incr y $lineht
2226	$c create image $x $y \
2227	-anchor ne \
2228	-image $_image(legend) -tags "colormap legend"
2229	$c create text $x [expr {$h-2}] \
2230	-anchor se \
2231	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2232	-font $font
2233	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2234	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2235	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2236	}
2237	$c delete isoline
2238	set x2 $x
2239	set iw [image width $_image(legend)]
2240	set ih [image height $_image(legend)]
2241	set x1 [expr $x2 - ($iw*12)/10]
2242	set color [$itk_component(isolinecolor) value]
2243	# Draw the isolines on the legend.
2244	if { $color != "none" && $_numContours > 0 } {
2245	set pixels [blt::vector create \#auto]
2246	set values [blt::vector create \#auto]
2247	set range [image height $_image(legend)]
2248	# Order of pixels is max to min (max is at top of legend).
2249	$pixels seq $ih 0 $_numContours
2250	set offset [expr 2 + $lineht]
2251	# If there's a legend title, increase the offset by the line height.
2252	if { $title != "" } {
2253	incr offset $lineht
2254	}
2255	$pixels expr {round($pixels + $offset)}
2256	# Order of values is min to max.
2257	foreach { vmin vmax } $_limits(v) break
2258	$values seq $vmin $vmax $_numContours
2259	set tags "isoline legend"
2260	foreach pos [$pixels range 0 end] value [$values range end 0] {
2261	set y1 [expr int($pos)]
2262	set id [$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags]
2263	$c bind $id <Enter> [itcl::code $this EnterIsoline %x %y $value]
2264	$c bind $id <Leave> [itcl::code $this LeaveIsoline]
2265	}
2266	blt::vector destroy $pixels $values
2267	}
2268
2269	$c bind title <ButtonPress> [itcl::code $this Combo post]
2270	$c bind title <Enter> [itcl::code $this Combo activate]
2271	$c bind title <Leave> [itcl::code $this Combo deactivate]
2272	# Reset the item coordinates according the current size of the plot.
2273	$c itemconfigure title -text $title
2274	if { [info exists _limits(v)] } {
2275	foreach { vmin vmax } $_limits(v) break
2276	$c itemconfigure vmin -text [format %g $vmin]
2277	$c itemconfigure vmax -text [format %g $vmax]
2278	}
2279	set y 2
2280	# If there's a legend title, move the title to the correct position
2281	if { $title != "" } {
2282	$c coords title $x $y
2283	incr y $lineht
2284	}
2285	$c coords vmax $x $y
2286	incr y $lineht
2287	$c coords colormap $x $y
2288	$c coords vmin $x [expr {$h - 2}]
2289	}
2290
2291	#
2292	# EnterIsoline --
2293	#
2294	itcl::body Rappture::VtkHeightmapViewer::EnterIsoline { x y value } {
2295	SetIsolineTip $x $y $value
2296	}
2297
2298	#
2299	# LeaveIsoline --
2300	#
2301	itcl::body Rappture::VtkHeightmapViewer::LeaveIsoline { } {
2302	Rappture::Tooltip::tooltip cancel
2303	.rappturetooltip configure -icon ""
2304	}
2305
2306	#
2307	# SetIsolineTip --
2308	#
2309	itcl::body Rappture::VtkHeightmapViewer::SetIsolineTip { x y value } {
2310	set c $itk_component(view)
2311	set w [winfo width $c]
2312	set h [winfo height $c]
2313	set font "Arial 8"
2314	set lineht [font metrics $font -linespace]
2315
2316	if { [info exists _fields($_title)] } {
2317	foreach { title units } $_fields($_title) break
2318	if { $units != "" } {
2319	set title [format "%s (%s)" $title $units]
2320	}
2321	} else {
2322	set title $_title
2323	}
2324	set imgHeight [image height $_image(legend)]
2325	set coords [$c coords colormap]
2326	set imgX [expr $w - [image width $_image(legend)] - 2]
2327	set imgY [expr $y - 2 * ($lineht + 2)]
2328
2329	.rappturetooltip configure -icon ""
2330
2331	# Compute the value of the point
2332	set tipx [expr $x + 15]
2333	set tipy [expr $y - 5]
2334	Rappture::Tooltip::text $c "Isoline $value"
2335	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2336	}
2337
2338
2339	#
2340	# EnterLegend --
2341	#
2342	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2343	SetLegendTip $x $y
2344	}
2345
2346	#
2347	# MotionLegend --
2348	#
2349	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2350	Rappture::Tooltip::tooltip cancel
2351	set c $itk_component(view)
2352	SetLegendTip $x $y
2353	}
2354
2355	#
2356	# LeaveLegend --
2357	#
2358	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2359	Rappture::Tooltip::tooltip cancel
2360	.rappturetooltip configure -icon ""
2361	}
2362
2363	#
2364	# SetLegendTip --
2365	#
2366	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2367	set c $itk_component(view)
2368	set w [winfo width $c]
2369	set h [winfo height $c]
2370	set font "Arial 8"
2371	set lineht [font metrics $font -linespace]
2372
2373	set imgHeight [image height $_image(legend)]
2374	set coords [$c coords colormap]
2375	set imgX [expr $w - [image width $_image(legend)] - 2]
2376	set imgY [expr $y - 2 * ($lineht + 2)]
2377
2378	if { [info exists _fields($_title)] } {
2379	foreach { title units } $_fields($_title) break
2380	if { $units != "" } {
2381	set title [format "%s (%s)" $title $units]
2382	}
2383	} else {
2384	set title $_title
2385	}
2386	# Make a swatch of the selected color
2387	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2388	#puts stderr "out of range: $imgY"
2389	return
2390	}
2391	if { ![info exists _image(swatch)] } {
2392	set _image(swatch) [image create photo -width 24 -height 24]
2393	}
2394	set color [eval format "\#%02x%02x%02x" $pixel]
2395	$_image(swatch) put black -to 0 0 23 23
2396	$_image(swatch) put $color -to 1 1 22 22
2397	.rappturetooltip configure -icon $_image(swatch)
2398
2399	# Compute the value of the point
2400	if { [info exists _limits(v)] } {
2401	foreach { vmin vmax } $_limits(v) break
2402	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2403	set value [expr $t * ($vmax - $vmin) + $vmin]
2404	} else {
2405	set value 0.0
2406	}
2407	set tipx [expr $x + 15]
2408	set tipy [expr $y - 5]
2409	Rappture::Tooltip::text $c "$title $value"
2410	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2411	}
2412
2413	# ----------------------------------------------------------------------
2414	# USAGE: _dropdown post
2415	# USAGE: _dropdown unpost
2416	# USAGE: _dropdown select
2417	#
2418	# Used internally to handle the dropdown list for this combobox. The
2419	# post/unpost options are invoked when the list is posted or unposted
2420	# to manage the relief of the controlling button. The select option
2421	# is invoked whenever there is a selection from the list, to assign
2422	# the value back to the gauge.
2423	# ----------------------------------------------------------------------
2424	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2425	set c $itk_component(view)
2426	switch -- $option {
2427	post {
2428	foreach { x1 y1 x2 y2 } [$c bbox title] break
2429	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2430	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2431	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2432	tk_popup $itk_component(fieldmenu) $x $y
2433	}
2434	activate {
2435	$c itemconfigure title -fill red
2436	}
2437	deactivate {
2438	$c itemconfigure title -fill $itk_option(-plotforeground)
2439	}
2440	invoke {
2441	$itk_component(field) value $_curFldName
2442	AdjustSetting field
2443	}
2444	default {
2445	error "bad option \"$option\": should be post, unpost, select"
2446	}
2447	}
2448	}
2449
2450	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2451	if { $_settings(isHeightmap) } {
2452	set val $_settings(heightmapScale)
2453	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2454	return $sval
2455	}
2456	set sval 0
2457	}
2458
2459	itcl::body Rappture::VtkHeightmapViewer::ResetColormap { color } {
2460	array set style {
2461	-color BCGYR
2462	-levels 10
2463	-opacity 1.0
2464	}
2465	if { [info exists _colormap($_currentColormap)] } {
2466	array set style $_colormap($_currentColormap)
2467	}
2468	set style(-color) $color
2469	SetCurrentColormap [array get style]
2470	}
2471

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