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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 3374

Last change on this file since 3374 was 3374, checked in by ldelgass, 12 years ago
VTK heightmap viewer doesn\'t use cutplanes
File size: 79.6 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	InitSettings isHeightmap background
913	#
914	# Reset the camera and other view parameters
915	#
916	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
917	SendCmd "axis lrot z 90"
918	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
919	$_arcball quaternion $q
920	if {$_settings(isHeightmap) } {
921	SendCmd "camera reset"
922	if { $_view(ortho)} {
923	SendCmd "camera mode ortho"
924	} else {
925	SendCmd "camera mode persp"
926	}
927	}
928	DoRotate
929	PanCamera
930	}
931	set _first ""
932
933	#SendCmd "imgflush"
934
935	set _first ""
936	# Start off with no datasets are visible.
937	SendCmd "dataset visible 0"
938	set scale [GetHeightmapScale]
939	foreach dataobj [get -objects] {
940	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
941	set _first $dataobj
942	}
943	scale $dataobj
944	set _obj2datasets($dataobj) ""
945	foreach comp [$dataobj components] {
946	set tag $dataobj-$comp
947	if { ![info exists _datasets($tag)] } {
948	set bytes [$dataobj vtkdata $comp]
949	if 0 {
950	set f [open /tmp/vtkheightmap.vtk "w"]
951	puts $f $bytes
952	close $f
953	}
954	set length [string length $bytes]
955	append _outbuf "dataset add $tag data follows $length\n"
956	append _outbuf $bytes
957	set _datasets($tag) 1
958	SetObjectStyle $dataobj $comp
959	}
960	lappend _obj2datasets($dataobj) $tag
961	if { [info exists _obj2ovride($dataobj-raise)] } {
962	SendCmd "heightmap visible 1 $tag"
963	}
964	if { ![info exists _comp2scale($tag)] \|\|
965	$_comp2scale($tag) != $scale } {
966	SendCmd "heightmap heightscale $scale $tag"
967	set _comp2scale($tag) $scale
968	}
969	}
970	}
971	if { $_first != "" && $_reset } {
972	if 1 {
973	# Tell the server the name of the tool, the version, and dataset
974	# that we are rendering. Have to do it here because we don't know
975	# what data objects are using the renderer until be get here.
976	global env
977
978	lappend out "hub" [exec hostname]
979	lappend out "viewer" "vtkheightmapviewer"
980	if { [info exists env(USER)] } {
981	lappend out "user" $env(USER)
982	}
983	if { [info exists env(SESSION)] } {
984	lappend out "session" $env(SESSION)
985	}
986	lappend out "tool_id" [$_first hints toolId]
987	lappend out "tool_name" [$_first hints toolName]
988	lappend out "tool_version" [$_first hints toolRevision]
989	lappend out "tool_title" [$_first hints toolTitle]
990	lappend out "tool_dataset" [$_first hints label]
991	SendCmd "clientinfo [list $out]"
992	}
993	set _fieldNames [$_first hints fieldnames]
994	set _fieldUnits [$_first hints fieldunits]
995	set _fieldLabels [$_first hints fieldlabels]
996	$itk_component(field) choices delete 0 end
997	$itk_component(fieldmenu) delete 0 end
998	array unset _fields
999	foreach name $_fieldNames title $_fieldLabels units $_fieldUnits {
1000	SendCmd "dataset maprange explicit $_limits(v) $name"
1001	if { $title == "" } {
1002	set title $name
1003	}
1004	$itk_component(field) choices insert end "$name" "$title"
1005	$itk_component(fieldmenu) add radiobutton -label "$title" \
1006	-value $title -variable [itcl::scope _curFldName] \
1007	-selectcolor red \
1008	-activebackground $itk_option(-plotbackground) \
1009	-activeforeground $itk_option(-plotforeground) \
1010	-font "Arial 8" \
1011	-command [itcl::code $this Combo invoke]
1012	set _fields($name) [list $title $units]
1013	set _curFldName $name
1014	}
1015	if { [array size _fields] == 1 } {
1016	set _curFldName $_fieldLabels
1017	if { $_curFldName == "" } {
1018	puts stderr "no default name from field"
1019	set _curFldName "Default"
1020	}
1021	}
1022	$itk_component(field) value $_curFldName
1023	}
1024	InitSettings stretchToFit
1025
1026	if { $_reset } {
1027	SendCmd "axis tickpos outside"
1028	foreach axis { x y z } {
1029	SendCmd "axis lformat $axis %g"
1030	}
1031	foreach axis { x y z } {
1032	set label [$_first hints ${axis}label]
1033	if { $label == "" } {
1034	if {$axis == "z"} {
1035	if { $_curFldName == "component" } {
1036	set label [string toupper $axis]
1037	} else {
1038	set label [lindex $_fields($_curFldName) 0]
1039	}
1040	} else {
1041	set label [string toupper $axis]
1042	}
1043	}
1044	# May be a space in the axis label.
1045	SendCmd [list axis name $axis $label]
1046
1047	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1048	set units [lindex $_fields($_curFldName) 1]
1049	} else {
1050	set units [$_first hints ${axis}units]
1051	}
1052	if { $units != "" } {
1053	# May be a space in the axis units.
1054	SendCmd [list axis units $axis $units]
1055	}
1056	}
1057	#
1058	# Reset the camera and other view parameters
1059	#
1060	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
1061	ResetAxes
1062	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1063	$_arcball quaternion $q
1064	if {$_settings(isHeightmap) } {
1065	SendCmd "camera reset"
1066	if { $_view(ortho)} {
1067	SendCmd "camera mode ortho"
1068	} else {
1069	SendCmd "camera mode persp"
1070	}
1071	}
1072	DoRotate
1073	PanCamera
1074	InitSettings axisXGrid axisYGrid axisZGrid \
1075	axisVisible axisLabels
1076	InitSettings heightmapOpacity \
1077	heightmapScale lighting \
1078	colormap field outline \
1079	edges heightmapOpacity wireframe
1080	set _reset 0
1081	}
1082	global readyForNextFrame
1083	set readyForNextFrame 0; # Don't advance to the next frame
1084	set _buffering 0; # Turn off buffering.
1085
1086	# Actually write the commands to the server socket. If it fails, we don't
1087	# care. We're finished here.
1088	blt::busy hold $itk_component(hull)
1089	sendto $_outbuf;
1090	blt::busy release $itk_component(hull)
1091	set _outbuf ""; # Clear the buffer.
1092	}
1093
1094	# ----------------------------------------------------------------------
1095	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1096	#
1097	# Returns a list of server IDs for the current datasets being displayed. This
1098	# is normally a single ID, but it might be a list of IDs if the current data
1099	# object has multiple components.
1100	# ----------------------------------------------------------------------
1101	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1102	set flag [lindex $args 0]
1103	switch -- $flag {
1104	"-all" {
1105	if { [llength $args] > 1 } {
1106	error "CurrentDatasets: can't specify dataobj after \"-all\""
1107	}
1108	set dlist [get -objects]
1109	}
1110	"-visible" {
1111	if { [llength $args] > 1 } {
1112	set dlist {}
1113	set args [lrange $args 1 end]
1114	foreach dataobj $args {
1115	if { [info exists _obj2ovride($dataobj-raise)] } {
1116	lappend dlist $dataobj
1117	}
1118	}
1119	} else {
1120	set dlist [get -visible]
1121	}
1122	}
1123	default {
1124	set dlist $args
1125	}
1126	}
1127	set rlist ""
1128	foreach dataobj $dlist {
1129	foreach comp [$dataobj components] {
1130	set tag $dataobj-$comp
1131	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1132	lappend rlist $tag
1133	}
1134	}
1135	}
1136	return $rlist
1137	}
1138
1139	# ----------------------------------------------------------------------
1140	# USAGE: Zoom in
1141	# USAGE: Zoom out
1142	# USAGE: Zoom reset
1143	#
1144	# Called automatically when the user clicks on one of the zoom
1145	# controls for this widget. Changes the zoom for the current view.
1146	# ----------------------------------------------------------------------
1147	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1148	switch -- $option {
1149	"in" {
1150	set _view(zoom) [expr {$_view(zoom)*1.25}]
1151	SendCmd "camera zoom $_view(zoom)"
1152	}
1153	"out" {
1154	set _view(zoom) [expr {$_view(zoom)*0.8}]
1155	SendCmd "camera zoom $_view(zoom)"
1156	}
1157	"reset" {
1158	array set _view {
1159	qw 0.36
1160	qx 0.25
1161	qy 0.50
1162	qz 0.70
1163	zoom 1.0
1164	xpan 0
1165	ypan 0
1166	}
1167	SendCmd "camera reset all"
1168	if { $_first != "" } {
1169	set location [$_first hints camera]
1170	if { $location != "" } {
1171	array set _view $location
1172	}
1173	}
1174	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1175	$_arcball quaternion $q
1176	DoRotate
1177	}
1178	}
1179	}
1180
1181	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1182	set x $_view(xpan)
1183	set y $_view(ypan)
1184	SendCmd "camera pan $x $y"
1185	}
1186
1187
1188	# ----------------------------------------------------------------------
1189	# USAGE: Rotate click <x> <y>
1190	# USAGE: Rotate drag <x> <y>
1191	# USAGE: Rotate release <x> <y>
1192	#
1193	# Called automatically when the user clicks/drags/releases in the
1194	# plot area. Moves the plot according to the user's actions.
1195	# ----------------------------------------------------------------------
1196	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1197	switch -- $option {
1198	"click" {
1199	$itk_component(view) configure -cursor fleur
1200	set _click(x) $x
1201	set _click(y) $y
1202	}
1203	"drag" {
1204	if {[array size _click] == 0} {
1205	Rotate click $x $y
1206	} else {
1207	set w [winfo width $itk_component(view)]
1208	set h [winfo height $itk_component(view)]
1209	if {$w <= 0 \|\| $h <= 0} {
1210	return
1211	}
1212
1213	if {[catch {
1214	# this fails sometimes for no apparent reason
1215	set dx [expr {double($x-$_click(x))/$w}]
1216	set dy [expr {double($y-$_click(y))/$h}]
1217	}]} {
1218	return
1219	}
1220	if { $dx == 0 && $dy == 0 } {
1221	return
1222	}
1223	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1224	EventuallyRotate $q
1225	set _click(x) $x
1226	set _click(y) $y
1227	}
1228	}
1229	"release" {
1230	Rotate drag $x $y
1231	$itk_component(view) configure -cursor ""
1232	catch {unset _click}
1233	}
1234	default {
1235	error "bad option \"$option\": should be click, drag, release"
1236	}
1237	}
1238	}
1239
1240	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1241	foreach tag [CurrentDatasets -visible] {
1242	SendCmd "dataset getscalar pixel $x $y $tag"
1243	}
1244	}
1245
1246	# ----------------------------------------------------------------------
1247	# USAGE: $this Pan click x y
1248	# $this Pan drag x y
1249	# $this Pan release x y
1250	#
1251	# Called automatically when the user clicks on one of the zoom
1252	# controls for this widget. Changes the zoom for the current view.
1253	# ----------------------------------------------------------------------
1254	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1255	switch -- $option {
1256	"set" {
1257	set w [winfo width $itk_component(view)]
1258	set h [winfo height $itk_component(view)]
1259	set x [expr $x / double($w)]
1260	set y [expr $y / double($h)]
1261	set _view(xpan) [expr $_view(xpan) + $x]
1262	set _view(ypan) [expr $_view(ypan) + $y]
1263	PanCamera
1264	return
1265	}
1266	"click" {
1267	set _click(x) $x
1268	set _click(y) $y
1269	$itk_component(view) configure -cursor hand1
1270	}
1271	"drag" {
1272	if { ![info exists _click(x)] } {
1273	set _click(x) $x
1274	}
1275	if { ![info exists _click(y)] } {
1276	set _click(y) $y
1277	}
1278	set w [winfo width $itk_component(view)]
1279	set h [winfo height $itk_component(view)]
1280	set dx [expr ($_click(x) - $x)/double($w)]
1281	set dy [expr ($_click(y) - $y)/double($h)]
1282	set _click(x) $x
1283	set _click(y) $y
1284	set _view(xpan) [expr $_view(xpan) - $dx]
1285	set _view(ypan) [expr $_view(ypan) - $dy]
1286	PanCamera
1287	}
1288	"release" {
1289	Pan drag $x $y
1290	$itk_component(view) configure -cursor ""
1291	}
1292	default {
1293	error "unknown option \"$option\": should set, click, drag, or release"
1294	}
1295	}
1296	}
1297
1298	# ----------------------------------------------------------------------
1299	# USAGE: InitSettings <what> ?<value>?
1300	#
1301	# Used internally to update rendering settings whenever parameters
1302	# change in the popup settings panel. Sends the new settings off
1303	# to the back end.
1304	# ----------------------------------------------------------------------
1305	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1306	foreach spec $args {
1307	if { [info exists _settings($_first-$spec)] } {
1308	# Reset global setting with dataobj specific setting
1309	set _settings($spec) $_settings($_first-$spec)
1310	}
1311	AdjustSetting $spec
1312	}
1313	}
1314
1315	#
1316	# AdjustSetting --
1317	#
1318	# Changes/updates a specific setting in the widget. There are
1319	# usually user-setable option. Commands are sent to the render
1320	# server.
1321	#
1322	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1323	if { $_beforeConnect } {
1324	return
1325	}
1326	switch -- $what {
1327	"heightmapOpacity" {
1328	set val $_settings(heightmapOpacity)
1329	set sval [expr { 0.01 * double($val) }]
1330	foreach dataset [CurrentDatasets -all] {
1331	SendCmd "heightmap opacity $sval $dataset"
1332	}
1333	}
1334	"wireframe" {
1335	set bool $_settings(wireframe)
1336	foreach dataset [CurrentDatasets -all] {
1337	SendCmd "heightmap wireframe $bool $dataset"
1338	}
1339	}
1340	"colormapVisible" {
1341	set bool $_settings(colormapVisible)
1342	foreach dataset [CurrentDatasets -all] {
1343	SendCmd "heightmap surface $bool $dataset"
1344	}
1345	}
1346	"isolinesVisible" {
1347	set bool $_settings(isolinesVisible)
1348	foreach dataset [CurrentDatasets -all] {
1349	SendCmd "heightmap isolines $bool $dataset"
1350	}
1351	}
1352	"lighting" {
1353	if { $_settings(isHeightmap) } {
1354	set bool $_settings(lighting)
1355	SendCmd "heightmap lighting $bool"
1356	} else {
1357	SendCmd "heightmap lighting 0"
1358	}
1359	}
1360	"edges" {
1361	set bool $_settings(edges)
1362	foreach dataset [CurrentDatasets -all] {
1363	SendCmd "heightmap edges $bool $dataset"
1364	}
1365	}
1366	"axisVisible" {
1367	set bool $_settings(axisVisible)
1368	SendCmd "axis visible all $bool"
1369	}
1370	"axisLabels" {
1371	set bool $_settings(axisLabels)
1372	SendCmd "axis labels all $bool"
1373	}
1374	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1375	set axis [string tolower [string range $what 4 4]]
1376	set bool $_settings($what)
1377	SendCmd "axis grid $axis $bool"
1378	}
1379	"axisFlymode" {
1380	set mode [$itk_component(axisflymode) value]
1381	set mode [$itk_component(axisflymode) translate $mode]
1382	set _settings($what) $mode
1383	SendCmd "axis flymode $mode"
1384	}
1385	"axisMinorTicks" {
1386	set bool $_settings(axisMinorTicks)
1387	foreach axis { x y z } {
1388	SendCmd "axis minticks ${axis} $bool"
1389	}
1390	}
1391	"isolines" {
1392	set n $_settings($what)
1393	EventuallyContour $n
1394	}
1395	"isolinesVisible" {
1396	set bool $_settings($what)
1397	foreach dataset [CurrentDatasets -all] {
1398	SendCmd "heightmap isolines $bool $dataset"
1399	}
1400	}
1401	"colormapVisible" {
1402	set bool $_settings($what)
1403	foreach dataset [CurrentDatasets -all] {
1404	SendCmd "heightmap surface $bool $dataset"
1405	}
1406	}
1407	"background" {
1408	set bgcolor [$itk_component(background) value]
1409	array set fgcolors {
1410	"black" "white"
1411	"white" "black"
1412	"grey" "black"
1413	}
1414	configure -plotbackground $bgcolor \
1415	-plotforeground $fgcolors($bgcolor)
1416	$itk_component(view) delete "legend"
1417	DrawLegend $_curFldName
1418	}
1419	"isolineColor" {
1420	set color [$itk_component(isolinecolor) value]
1421	if { $color == "none" } {
1422	if { $_settings(isolinesVisible) } {
1423	SendCmd "heightmap isolines 0"
1424	set _settings(isolinesVisible) 0
1425	}
1426	} else {
1427	if { !$_settings(isolinesVisible) } {
1428	SendCmd "heightmap isolines 1"
1429	set _settings(isolinesVisible) 1
1430	}
1431	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1432	}
1433	DrawLegend $_curFldName
1434	}
1435	"colormap" {
1436	set color [$itk_component(colormap) value]
1437	set _settings(colormap) $color
1438	if { $color == "none" } {
1439	if { $_settings(colormapVisible) } {
1440	SendCmd "heightmap surface 0"
1441	set _settings(colormapVisible) 0
1442	}
1443	} else {
1444	if { !$_settings(colormapVisible) } {
1445	SendCmd "heightmap surface 1"
1446	set _settings(colormapVisible) 1
1447	}
1448	ResetColormap $color
1449	SendCmd "heightmap colormap $_currentColormap"
1450	}
1451	SendCmdNoWait "heightmap colormode scalar $_curFldName"
1452	SendCmdNoWait "dataset scalar $_curFldName"
1453	EventuallyRequestLegend
1454	}
1455	"heightmapOpacity" {
1456	set val $_settings(heightmapOpacity)
1457	set sval [expr { 0.01 * double($val) }]
1458	foreach dataset [CurrentDatasets -all] {
1459	SendCmd "heightmap opacity $sval $dataset"
1460	}
1461	}
1462	"heightmapScale" {
1463	if { $_settings(isHeightmap) } {
1464	set scale [GetHeightmapScale]
1465	foreach dataset [CurrentDatasets -all] {
1466	SendCmd "heightmap heightscale $scale $dataset"
1467	set _comp2scale($dataset) $scale
1468	}
1469	ResetAxes
1470	}
1471	}
1472	"lighting" {
1473	if { $_settings(isHeightmap) } {
1474	set bool $_settings(lighting)
1475	SendCmd "heightmap lighting $bool"
1476	} else {
1477	SendCmd "heightmap lighting 0"
1478	}
1479	}
1480	"field" {
1481	set new [$itk_component(field) value]
1482	set value [$itk_component(field) translate $new]
1483	set _settings(field) $value
1484	if { [info exists _fields($new)] } {
1485	set _colorMode scalar
1486	set _curFldName $new
1487	} else {
1488	puts stderr "unknown field \"$new\""
1489	return
1490	}
1491	EventuallyRequestLegend
1492	}
1493	"stretchToFit" {
1494	set bool $_settings(stretchToFit)
1495	if { $bool } {
1496	set heightScale [GetHeightmapScale]
1497	if {$heightScale == 0} {
1498	SendCmd "camera aspect window"
1499	} else {
1500	SendCmd "camera aspect square"
1501	}
1502	} else {
1503	SendCmd "camera aspect native"
1504	}
1505	}
1506	"outline" {
1507	set bool $_settings(outline)
1508	SendCmd "dataset outline $bool"
1509	}
1510	"isHeightmap" {
1511	set bool $_settings(isHeightmap)
1512	if { $bool } {
1513	$itk_component(lighting) configure -state normal
1514	} else {
1515	$itk_component(lighting) configure -state disabled
1516	}
1517	set _settings(lighting) $bool
1518	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1519	if { $bool } {
1520	set _settings(heightmapScale) 50
1521	} else {
1522	set _settings(heightmapScale) 50
1523	}
1524	SendCmd "heightmap lighting $bool"
1525	set scale [GetHeightmapScale]
1526	foreach dataset [CurrentDatasets -all] {
1527	SendCmd "heightmap heightscale $scale $dataset"
1528	set _comp2scale($dataset) $scale
1529	}
1530	if {$_settings(stretchToFit)} {
1531	if {$scale == 0} {
1532	SendCmd "camera aspect window"
1533	} else {
1534	SendCmd "camera aspect square"
1535	}
1536	}
1537	ResetAxes
1538	# Fix the mouse bindings for rotation/panning and the
1539	# camera mode. Ideally we'd create a bindtag for these.
1540	set c $itk_component(view)
1541	if { $bool } {
1542	# Bindings for rotation via mouse
1543	bind $c <ButtonPress-1> \
1544	[itcl::code $this Rotate click %x %y]
1545	bind $c <B1-Motion> \
1546	[itcl::code $this Rotate drag %x %y]
1547	bind $c <ButtonRelease-1> \
1548	[itcl::code $this Rotate release %x %y]
1549	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1550	$_arcball quaternion $q
1551	if {$_view(ortho)} {
1552	SendCmd "camera mode ortho"
1553	} else {
1554	SendCmd "camera mode persp"
1555	}
1556	SendCmd "camera orient $q"
1557	} else {
1558	set _settings(heightmapScale) 0
1559	bind $c <ButtonPress-1> {}
1560	bind $c <B1-Motion> {}
1561	bind $c <ButtonRelease-1> {}
1562	SendCmd "camera mode image"
1563	}
1564	}
1565	"legendVisible" {
1566	if { !$_settings(legendVisible) } {
1567	$itk_component(view) delete legend
1568	}
1569	DrawLegend $_curFldName
1570	}
1571	default {
1572	error "don't know how to fix $what"
1573	}
1574	}
1575	}
1576
1577	#
1578	# RequestLegend --
1579	#
1580	# Request a new legend from the server. The size of the legend
1581	# is determined from the height of the canvas.
1582	#
1583	# This should be called when
1584	# 1. A new current colormap is set.
1585	# 2. Window is resized.
1586	# 3. The limits of the data have changed. (Just need a redraw).
1587	# 4. Number of isolines have changed. (Just need a redraw).
1588	# 5. Legend becomes visible (Just need a redraw).
1589	#
1590	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1591	set _legendPending 0
1592	set font "Arial 8"
1593	set lineht [font metrics $font -linespace]
1594	set c $itk_component(view)
1595	set w 12
1596	set h [expr {$_height - 2 * ($lineht + 2)}]
1597	if { $h < 1} {
1598	return
1599	}
1600	if { [info exists _fields($_curFldName)] } {
1601	set title [lindex $_fields($_curFldName) 0]
1602	if { $title != "component" } {
1603	set h [expr $h - ($lineht + 2)]
1604	}
1605	} else {
1606	return
1607	}
1608	# Set the legend on the first heightmap dataset.
1609	if { $_currentColormap != "" } {
1610	set cmap $_currentColormap
1611	SendCmdNoWait "legend $cmap scalar $_curFldName {} $w $h 0"
1612	SendCmdNoWait "heightmap colormode scalar $_curFldName"
1613	SendCmdNoWait "dataset scalar $_curFldName"
1614	}
1615	}
1616
1617	#
1618	# ResetAxes --
1619	#
1620	# Set axis z bounds and range
1621	#
1622	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1623	if { ![info exists _limits(v)] \|\| ![info exists _fields($_curFldName)]} {
1624	SendCmd "dataset maprange all"
1625	SendCmd "axis autorange z on"
1626	SendCmd "axis autobounds z on"
1627	return
1628	}
1629	foreach { vmin vmax } $_limits(v) break
1630	foreach { xmin xmax } $_limits(x) break
1631	foreach { ymin ymax } $_limits(y) break
1632	set dataRange [expr $vmax - $vmin]
1633	set boundsRange [expr $xmax - $xmin]
1634	set r [expr $ymax - $ymin]
1635	if {$r > $boundsRange} {
1636	set boundsRange $r
1637	}
1638	if {$dataRange < 1.0e-10} {
1639	set dataScale 1.0
1640	} else {
1641	set dataScale [expr $boundsRange / $dataRange]
1642	}
1643	set heightScale [GetHeightmapScale]
1644	set bMin [expr $heightScale * $dataScale * $vmin]
1645	set bMax [expr $heightScale * $dataScale * $vmax]
1646	set fieldName [lindex $_fields($_curFldName) 0]
1647	SendCmd "dataset maprange explicit $_limits(v) $fieldName"
1648	SendCmd "axis bounds z $bMin $bMax"
1649	SendCmd "axis range z $_limits(v)"
1650	}
1651
1652	#
1653	# SetCurrentColormap --
1654	#
1655	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { stylelist } {
1656	array set style {
1657	-color BCGYR
1658	-levels 10
1659	-opacity 1.0
1660	}
1661	array set style $stylelist
1662
1663	set name "$style(-color):$style(-levels):$style(-opacity)"
1664	if { ![info exists _colormaps($name)] } {
1665	set stylelist [array get style]
1666	BuildColormap $name $stylelist
1667	set _colormaps($name) $stylelist
1668	}
1669	set _currentColormap $name
1670	}
1671
1672
1673	#
1674	# BuildColormap --
1675	#
1676	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name stylelist } {
1677	array set style $stylelist
1678	set cmap [ColorsToColormap $style(-color)]
1679	if { [llength $cmap] == 0 } {
1680	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1681	}
1682	if { ![info exists _settings(heightmapOpacity)] } {
1683	set _settings(heightmapOpacity) $style(-opacity)
1684	}
1685	set max $_settings(heightmapOpacity)
1686
1687	set wmap "0.0 1.0 1.0 1.0"
1688	SendCmd "colormap add $name { $cmap } { $wmap }"
1689	}
1690
1691	# ----------------------------------------------------------------------
1692	# CONFIGURATION OPTION: -mode
1693	# ----------------------------------------------------------------------
1694	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1695	switch -- $itk_option(-mode) {
1696	"heightmap" {
1697	set _settings(isHeightmap) 1
1698	}
1699	"contour" {
1700	set _settings(isHeightmap) 0
1701	}
1702	default {
1703	error "unknown mode settings \"$itk_option(-mode)\""
1704	}
1705	}
1706	AdjustSetting isHeightmap
1707	}
1708
1709	# ----------------------------------------------------------------------
1710	# CONFIGURATION OPTION: -plotbackground
1711	# ----------------------------------------------------------------------
1712	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1713	if { [isconnected] } {
1714	set rgb [Color2RGB $itk_option(-plotbackground)]
1715	SendCmd "screen bgcolor $rgb"
1716	$itk_component(view) configure -background $itk_option(-plotbackground)
1717	}
1718	}
1719
1720	# ----------------------------------------------------------------------
1721	# CONFIGURATION OPTION: -plotforeground
1722	# ----------------------------------------------------------------------
1723	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1724	if { [isconnected] } {
1725	set rgb [Color2RGB $itk_option(-plotforeground)]
1726	SendCmd "dataset color $rgb"
1727	SendCmd "axis color all $rgb"
1728	}
1729	}
1730
1731	itcl::body Rappture::VtkHeightmapViewer::limits { dataobj } {
1732	lappend limits x [$dataobj limits x]
1733	lappend limits y [$dataobj limits y]
1734	lappend limits v [$dataobj limits v]
1735	return $limits
1736	}
1737
1738	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1739
1740	set fg [option get $itk_component(hull) font Font]
1741	#set bfg [option get $itk_component(hull) boldFont Font]
1742
1743	set inner [$itk_component(main) insert end \
1744	-title "Contour Settings" \
1745	-icon [Rappture::icon volume-on]]
1746	$inner configure -borderwidth 4
1747
1748	checkbutton $inner.legend \
1749	-text "Legend" \
1750	-variable [itcl::scope _settings(legendVisible)] \
1751	-command [itcl::code $this AdjustSetting legendVisible] \
1752	-font "Arial 9"
1753
1754	checkbutton $inner.wireframe \
1755	-text "Wireframe" \
1756	-variable [itcl::scope _settings(wireframe)] \
1757	-command [itcl::code $this AdjustSetting wireframe] \
1758	-font "Arial 9"
1759
1760	itk_component add lighting {
1761	checkbutton $inner.lighting \
1762	-text "Enable Lighting" \
1763	-variable [itcl::scope _settings(lighting)] \
1764	-command [itcl::code $this AdjustSetting lighting] \
1765	-font "Arial 9"
1766	} {
1767	ignore -font
1768	}
1769
1770	checkbutton $inner.edges \
1771	-text "Edges" \
1772	-variable [itcl::scope _settings(edges)] \
1773	-command [itcl::code $this AdjustSetting edges] \
1774	-font "Arial 9"
1775
1776	checkbutton $inner.outline \
1777	-text "Outline" \
1778	-variable [itcl::scope _settings(outline)] \
1779	-command [itcl::code $this AdjustSetting outline] \
1780	-font "Arial 9"
1781
1782	checkbutton $inner.stretch \
1783	-text "Stretch to fit" \
1784	-variable [itcl::scope _settings(stretchToFit)] \
1785	-command [itcl::code $this AdjustSetting stretchToFit] \
1786	-font "Arial 9"
1787
1788	label $inner.field_l -text "Field" -font "Arial 9"
1789	itk_component add field {
1790	Rappture::Combobox $inner.field -width 10 -editable no
1791	}
1792	bind $inner.field <<Value>> \
1793	[itcl::code $this AdjustSetting field]
1794
1795	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1796	itk_component add colormap {
1797	Rappture::Combobox $inner.colormap -width 10 -editable no
1798	}
1799	$inner.colormap choices insert end \
1800	"BCGYR" "BCGYR" \
1801	"BGYOR" "BGYOR" \
1802	"blue" "blue" \
1803	"blue-to-brown" "blue-to-brown" \
1804	"blue-to-orange" "blue-to-orange" \
1805	"blue-to-grey" "blue-to-grey" \
1806	"green-to-magenta" "green-to-magenta" \
1807	"greyscale" "greyscale" \
1808	"nanohub" "nanohub" \
1809	"rainbow" "rainbow" \
1810	"spectral" "spectral" \
1811	"ROYGB" "ROYGB" \
1812	"RYGCB" "RYGCB" \
1813	"brown-to-blue" "brown-to-blue" \
1814	"grey-to-blue" "grey-to-blue" \
1815	"orange-to-blue" "orange-to-blue" \
1816	"none" "none"
1817
1818	$itk_component(colormap) value "BCGYR"
1819	bind $inner.colormap <<Value>> \
1820	[itcl::code $this AdjustSetting colormap]
1821
1822	label $inner.isolinecolor_l -text "Isolines" -font "Arial 9"
1823	itk_component add isolinecolor {
1824	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1825	}
1826	$inner.isolinecolor choices insert end \
1827	"black" "black" \
1828	"blue" "blue" \
1829	"cyan" "cyan" \
1830	"green" "green" \
1831	"grey" "grey" \
1832	"magenta" "magenta" \
1833	"orange" "orange" \
1834	"red" "red" \
1835	"white" "white" \
1836	"none" "none"
1837
1838	$itk_component(isolinecolor) value "black"
1839	bind $inner.isolinecolor <<Value>> \
1840	[itcl::code $this AdjustSetting isolineColor]
1841
1842	label $inner.background_l -text "Background" -font "Arial 9"
1843	itk_component add background {
1844	Rappture::Combobox $inner.background -width 10 -editable no
1845	}
1846	$inner.background choices insert end \
1847	"black" "black" \
1848	"white" "white" \
1849	"grey" "grey"
1850
1851	$itk_component(background) value "white"
1852	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1853
1854	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1855	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1856	-variable [itcl::scope _settings(heightmapOpacity)] \
1857	-width 10 \
1858	-showvalue off \
1859	-command [itcl::code $this AdjustSetting heightmapOpacity]
1860
1861	label $inner.scale_l -text "Scale" -font "Arial 9"
1862	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1863	-variable [itcl::scope _settings(heightmapScale)] \
1864	-width 10 \
1865	-showvalue off \
1866	-command [itcl::code $this AdjustSetting heightmapScale]
1867
1868	blt::table $inner \
1869	0,0 $inner.colormap_l -anchor w -pady 2 \
1870	0,1 $inner.colormap -anchor w -pady 2 -fill x \
1871	1,0 $inner.isolinecolor_l -anchor w -pady 2 \
1872	1,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
1873	2,0 $inner.background_l -anchor w -pady 2 \
1874	2,1 $inner.background -anchor w -pady 2 -fill x \
1875	4,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1876	5,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
1877	6,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1878	7,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1879	8,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1880	9,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
1881	10,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1882	11,0 $inner.opacity_l -anchor w -pady 2 \
1883	11,1 $inner.opacity -fill x -pady 2 \
1884	12,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
1885	12,1 $inner.scale -fill x -pady 2 -cspan 2 \
1886
1887	if { [array size _fields] > 1 } {
1888	blt::table $inner \
1889	3,0 $inner.field_l -anchor w -pady 2 \
1890	3,1 $inner.field -anchor w -pady 2 -fill x
1891	}
1892	blt::table configure $inner r* c* -resize none
1893	blt::table configure $inner r13 c1 -resize expand
1894	}
1895
1896	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
1897
1898	set fg [option get $itk_component(hull) font Font]
1899	#set bfg [option get $itk_component(hull) boldFont Font]
1900
1901	set inner [$itk_component(main) insert end \
1902	-title "Axis Settings" \
1903	-icon [Rappture::icon axis1]]
1904	$inner configure -borderwidth 4
1905
1906	checkbutton $inner.visible \
1907	-text "Axes" \
1908	-variable [itcl::scope _settings(axisVisible)] \
1909	-command [itcl::code $this AdjustSetting axisVisible] \
1910	-font "Arial 9"
1911	checkbutton $inner.labels \
1912	-text "Axis Labels" \
1913	-variable [itcl::scope _settings(axisLabels)] \
1914	-command [itcl::code $this AdjustSetting axisLabels] \
1915	-font "Arial 9"
1916	label $inner.grid_l -text "Grid" -font "Arial 9"
1917	checkbutton $inner.xgrid \
1918	-text "X" \
1919	-variable [itcl::scope _settings(axisXGrid)] \
1920	-command [itcl::code $this AdjustSetting axisXGrid] \
1921	-font "Arial 9"
1922	checkbutton $inner.ygrid \
1923	-text "Y" \
1924	-variable [itcl::scope _settings(axisYGrid)] \
1925	-command [itcl::code $this AdjustSetting axisYGrid] \
1926	-font "Arial 9"
1927	checkbutton $inner.zgrid \
1928	-text "Z" \
1929	-variable [itcl::scope _settings(axisZGrid)] \
1930	-command [itcl::code $this AdjustSetting axisZGrid] \
1931	-font "Arial 9"
1932	checkbutton $inner.minorticks \
1933	-text "Minor Ticks" \
1934	-variable [itcl::scope _settings(axisMinorTicks)] \
1935	-command [itcl::code $this AdjustSetting axisMinorTicks] \
1936	-font "Arial 9"
1937
1938
1939	label $inner.mode_l -text "Mode" -font "Arial 9"
1940
1941	itk_component add axisflymode {
1942	Rappture::Combobox $inner.mode -width 10 -editable no
1943	}
1944	$inner.mode choices insert end \
1945	"static_triad" "static" \
1946	"closest_triad" "closest" \
1947	"furthest_triad" "furthest" \
1948	"outer_edges" "outer"
1949	$itk_component(axisflymode) value "static"
1950	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlymode]
1951
1952	blt::table $inner \
1953	0,0 $inner.visible -anchor w -cspan 4 \
1954	1,0 $inner.labels -anchor w -cspan 4 \
1955	2,0 $inner.minorticks -anchor w -cspan 4 \
1956	4,0 $inner.grid_l -anchor w \
1957	4,1 $inner.xgrid -anchor w \
1958	4,2 $inner.ygrid -anchor w \
1959	4,3 $inner.zgrid -anchor w \
1960	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1961	5,1 $inner.mode -fill x -cspan 3
1962
1963	blt::table configure $inner r* c* -resize none
1964	blt::table configure $inner r7 c6 -resize expand
1965	blt::table configure $inner r3 -height 0.125i
1966	}
1967
1968
1969	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
1970	set inner [$itk_component(main) insert end \
1971	-title "Camera Settings" \
1972	-icon [Rappture::icon camera]]
1973	$inner configure -borderwidth 4
1974
1975	set labels { qx qy qz qw xpan ypan zoom }
1976	set row 0
1977	foreach tag $labels {
1978	label $inner.${tag}label -text $tag -font "Arial 9"
1979	entry $inner.${tag} -font "Arial 9" -bg white \
1980	-textvariable [itcl::scope _view($tag)]
1981	bind $inner.${tag} <KeyPress-Return> \
1982	[itcl::code $this camera set ${tag}]
1983	blt::table $inner \
1984	$row,0 $inner.${tag}label -anchor e -pady 2 \
1985	$row,1 $inner.${tag} -anchor w -pady 2
1986	blt::table configure $inner r$row -resize none
1987	incr row
1988	}
1989	checkbutton $inner.ortho \
1990	-text "Orthographic Projection" \
1991	-variable [itcl::scope _view(ortho)] \
1992	-command [itcl::code $this camera set ortho] \
1993	-font "Arial 9"
1994	blt::table $inner \
1995	$row,0 $inner.ortho -columnspan 2 -anchor w -pady 2
1996	blt::table configure $inner r$row -resize none
1997	incr row
1998
1999	blt::table configure $inner c0 c1 -resize none
2000	blt::table configure $inner c2 -resize expand
2001	blt::table configure $inner r$row -resize expand
2002	}
2003
2004	#
2005	# camera --
2006	#
2007	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2008	switch -- $option {
2009	"show" {
2010	puts [array get _view]
2011	}
2012	"set" {
2013	set who [lindex $args 0]
2014	set x $_view($who)
2015	set code [catch { string is double $x } result]
2016	if { $code != 0 \|\| !$result } {
2017	return
2018	}
2019	switch -- $who {
2020	"ortho" {
2021	if {$_view(ortho)} {
2022	SendCmd "camera mode ortho"
2023	} else {
2024	SendCmd "camera mode persp"
2025	}
2026	}
2027	"xpan" - "ypan" {
2028	PanCamera
2029	}
2030	"qx" - "qy" - "qz" - "qw" {
2031	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2032	$_arcball quaternion $q
2033	EventuallyRotate $q
2034	}
2035	"zoom" {
2036	SendCmd "camera zoom $_view(zoom)"
2037	}
2038	}
2039	}
2040	}
2041	}
2042
2043	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2044	set bytes ""
2045	foreach dataobj [get] {
2046	foreach comp [$dataobj components] {
2047	set tag $dataobj-$comp
2048	set contents [ConvertToVtkData $dataobj $comp]
2049	#set contents [$dataobj vtkdata $comp]
2050	append bytes "$contents\n\n"
2051	}
2052	}
2053	return [list .vtk $bytes]
2054	}
2055
2056	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2057	if { [image width $_image(download)] > 0 &&
2058	[image height $_image(download)] > 0 } {
2059	set bytes [$_image(download) data -format "jpeg -quality 100"]
2060	set bytes [Rappture::encoding::decode -as b64 $bytes]
2061	return [list .jpg $bytes]
2062	}
2063	return ""
2064	}
2065
2066	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2067	Rappture::Balloon $popup \
2068	-title "[Rappture::filexfer::label downloadWord] as..."
2069	set inner [$popup component inner]
2070	label $inner.summary -text "" -anchor w
2071	radiobutton $inner.vtk_button -text "VTK data file" \
2072	-variable [itcl::scope _downloadPopup(format)] \
2073	-font "Arial 9 " \
2074	-value vtk
2075	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2076	radiobutton $inner.image_button -text "Image File" \
2077	-variable [itcl::scope _downloadPopup(format)] \
2078	-font "Arial 9 " \
2079	-value image
2080	Rappture::Tooltip::for $inner.image_button \
2081	"Save as digital image."
2082
2083	button $inner.ok -text "Save" \
2084	-highlightthickness 0 -pady 2 -padx 3 \
2085	-command $command \
2086	-compound left \
2087	-image [Rappture::icon download]
2088
2089	button $inner.cancel -text "Cancel" \
2090	-highlightthickness 0 -pady 2 -padx 3 \
2091	-command [list $popup deactivate] \
2092	-compound left \
2093	-image [Rappture::icon cancel]
2094
2095	blt::table $inner \
2096	0,0 $inner.summary -cspan 2 \
2097	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2098	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2099	4,1 $inner.cancel -width .9i -fill y \
2100	4,0 $inner.ok -padx 2 -width .9i -fill y
2101	blt::table configure $inner r3 -height 4
2102	blt::table configure $inner r4 -pady 4
2103	raise $inner.image_button
2104	$inner.vtk_button invoke
2105	return $inner
2106	}
2107
2108	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2109	# Parse style string.
2110	set tag $dataobj-$comp
2111	array set style {
2112	-color BCGYR
2113	-edges 0
2114	-edgecolor black
2115	-lighting 1
2116	-linewidth 1.0
2117	-levels 10
2118	-visible 1
2119	}
2120	if { $_currentColormap == "" } {
2121	set stylelist [$dataobj style $comp]
2122	if { $stylelist != "" } {
2123	array set style $stylelist
2124	set stylelist [array get style]
2125	SetCurrentColormap $stylelist
2126	}
2127	$itk_component(colormap) value $style(-color)
2128	}
2129	set _numContours $style(-levels)
2130	set scale [GetHeightmapScale]
2131	SendCmd "heightmap add numcontours $_numContours $scale $tag"
2132	set _comp2scale($tag) $_settings(heightmapScale)
2133	SendCmd "heightmap edges $_settings(edges) $tag"
2134	SendCmd "heightmap wireframe $_settings(wireframe) $tag"
2135	SendCmd "heightmap colormap $_currentColormap $tag"
2136	}
2137
2138	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2139	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2140	return 0
2141	}
2142	return 1
2143	}
2144
2145	# ----------------------------------------------------------------------
2146	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2147	#
2148	# Invoked automatically whenever the "legend" command comes in from
2149	# the rendering server. Indicates that binary image data with the
2150	# specified <size> will follow.
2151	# ----------------------------------------------------------------------
2152	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2153	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2154	set _title $title
2155	regsub {\(mag\)} $title "" _title
2156	if { [isconnected] } {
2157	set bytes [ReceiveBytes $size]
2158	if { ![info exists _image(legend)] } {
2159	set _image(legend) [image create photo]
2160	}
2161	$_image(legend) configure -data $bytes
2162	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2163	if { [catch {DrawLegend $_title} errs] != 0 } {
2164	global errorInfo
2165	puts stderr "errs=$errs errorInfo=$errorInfo"
2166	}
2167	}
2168	}
2169
2170	#
2171	# DrawLegend --
2172	#
2173	# Draws the legend in it's own canvas which resides to the right
2174	# of the contour plot area.
2175	#
2176	itcl::body Rappture::VtkHeightmapViewer::DrawLegend { name } {
2177	set c $itk_component(view)
2178	set w [winfo width $c]
2179	set h [winfo height $c]
2180	set font "Arial 8"
2181	set lineht [font metrics $font -linespace]
2182
2183	if { $name == "component" } {
2184	set title ""
2185	} else {
2186	if { [info exists _fields($name)] } {
2187	foreach { title units } $_fields($name) break
2188	if { $units != "" } {
2189	set title [format "%s (%s)" $title $units]
2190	}
2191	} else {
2192	set title $name
2193	}
2194	}
2195	set x [expr $w - 2]
2196	if { !$_settings(legendVisible) } {
2197	$c delete legend
2198	return
2199	}
2200	if { [$c find withtag "legend"] == "" } {
2201	set y 2
2202	# If there's a legend title, create a text item for the title.
2203	if { $title != "" } {
2204	$c create text $x $y \
2205	-anchor ne \
2206	-fill $itk_option(-plotforeground) -tags "title legend" \
2207	-font $font
2208	incr y $lineht
2209	}
2210	$c create text $x $y \
2211	-anchor ne \
2212	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2213	-font $font
2214	incr y $lineht
2215	$c create image $x $y \
2216	-anchor ne \
2217	-image $_image(legend) -tags "colormap legend"
2218	$c create text $x [expr {$h-2}] \
2219	-anchor se \
2220	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2221	-font $font
2222	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2223	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2224	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2225	}
2226	$c delete isoline
2227	set x2 $x
2228	set iw [image width $_image(legend)]
2229	set ih [image height $_image(legend)]
2230	set x1 [expr $x2 - ($iw*12)/10]
2231	set color [$itk_component(isolinecolor) value]
2232	# Draw the isolines on the legend.
2233	if { $color != "none" && $_numContours > 0 } {
2234	set pixels [blt::vector create \#auto]
2235	set values [blt::vector create \#auto]
2236	set range [image height $_image(legend)]
2237	# Order of pixels is max to min (max is at top of legend).
2238	$pixels seq $ih 0 $_numContours
2239	set offset [expr 2 + $lineht]
2240	# If there's a legend title, increase the offset by the line height.
2241	if { $title != "" } {
2242	incr offset $lineht
2243	}
2244	$pixels expr {round($pixels + $offset)}
2245	# Order of values is min to max.
2246	foreach { vmin vmax } $_limits(v) break
2247	$values seq $vmin $vmax $_numContours
2248	set tags "isoline legend"
2249	foreach pos [$pixels range 0 end] value [$values range end 0] {
2250	set y1 [expr int($pos)]
2251	set id [$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags]
2252	$c bind $id <Enter> [itcl::code $this EnterIsoline %x %y $value]
2253	$c bind $id <Leave> [itcl::code $this LeaveIsoline]
2254	}
2255	blt::vector destroy $pixels $values
2256	}
2257
2258	$c bind title <ButtonPress> [itcl::code $this Combo post]
2259	$c bind title <Enter> [itcl::code $this Combo activate]
2260	$c bind title <Leave> [itcl::code $this Combo deactivate]
2261	# Reset the item coordinates according the current size of the plot.
2262	$c itemconfigure title -text $title
2263	if { [info exists _limits(v)] } {
2264	foreach { vmin vmax } $_limits(v) break
2265	$c itemconfigure vmin -text [format %g $vmin]
2266	$c itemconfigure vmax -text [format %g $vmax]
2267	}
2268	set y 2
2269	# If there's a legend title, move the title to the correct position
2270	if { $title != "" } {
2271	$c coords title $x $y
2272	incr y $lineht
2273	}
2274	$c coords vmax $x $y
2275	incr y $lineht
2276	$c coords colormap $x $y
2277	$c coords vmin $x [expr {$h - 2}]
2278	}
2279
2280	#
2281	# EnterIsoline --
2282	#
2283	itcl::body Rappture::VtkHeightmapViewer::EnterIsoline { x y value } {
2284	SetIsolineTip $x $y $value
2285	}
2286
2287	#
2288	# LeaveIsoline --
2289	#
2290	itcl::body Rappture::VtkHeightmapViewer::LeaveIsoline { } {
2291	Rappture::Tooltip::tooltip cancel
2292	.rappturetooltip configure -icon ""
2293	}
2294
2295	#
2296	# SetIsolineTip --
2297	#
2298	itcl::body Rappture::VtkHeightmapViewer::SetIsolineTip { x y value } {
2299	set c $itk_component(view)
2300	set w [winfo width $c]
2301	set h [winfo height $c]
2302	set font "Arial 8"
2303	set lineht [font metrics $font -linespace]
2304
2305	if { [info exists _fields($_title)] } {
2306	foreach { title units } $_fields($_title) break
2307	if { $units != "" } {
2308	set title [format "%s (%s)" $title $units]
2309	}
2310	} else {
2311	set title $_title
2312	}
2313	set imgHeight [image height $_image(legend)]
2314	set coords [$c coords colormap]
2315	set imgX [expr $w - [image width $_image(legend)] - 2]
2316	set imgY [expr $y - 2 * ($lineht + 2)]
2317
2318	.rappturetooltip configure -icon ""
2319
2320	# Compute the value of the point
2321	set tipx [expr $x + 15]
2322	set tipy [expr $y - 5]
2323	Rappture::Tooltip::text $c "Isoline $value"
2324	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2325	}
2326
2327
2328	#
2329	# EnterLegend --
2330	#
2331	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2332	SetLegendTip $x $y
2333	}
2334
2335	#
2336	# MotionLegend --
2337	#
2338	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2339	Rappture::Tooltip::tooltip cancel
2340	set c $itk_component(view)
2341	SetLegendTip $x $y
2342	}
2343
2344	#
2345	# LeaveLegend --
2346	#
2347	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2348	Rappture::Tooltip::tooltip cancel
2349	.rappturetooltip configure -icon ""
2350	}
2351
2352	#
2353	# SetLegendTip --
2354	#
2355	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2356	set c $itk_component(view)
2357	set w [winfo width $c]
2358	set h [winfo height $c]
2359	set font "Arial 8"
2360	set lineht [font metrics $font -linespace]
2361
2362	set imgHeight [image height $_image(legend)]
2363	set coords [$c coords colormap]
2364	set imgX [expr $w - [image width $_image(legend)] - 2]
2365	set imgY [expr $y - 2 * ($lineht + 2)]
2366
2367	if { [info exists _fields($_title)] } {
2368	foreach { title units } $_fields($_title) break
2369	if { $units != "" } {
2370	set title [format "%s (%s)" $title $units]
2371	}
2372	} else {
2373	set title $_title
2374	}
2375	# Make a swatch of the selected color
2376	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2377	#puts stderr "out of range: $imgY"
2378	return
2379	}
2380	if { ![info exists _image(swatch)] } {
2381	set _image(swatch) [image create photo -width 24 -height 24]
2382	}
2383	set color [eval format "\#%02x%02x%02x" $pixel]
2384	$_image(swatch) put black -to 0 0 23 23
2385	$_image(swatch) put $color -to 1 1 22 22
2386	.rappturetooltip configure -icon $_image(swatch)
2387
2388	# Compute the value of the point
2389	if { [info exists _limits(v)] } {
2390	foreach { vmin vmax } $_limits(v) break
2391	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2392	set value [expr $t * ($vmax - $vmin) + $vmin]
2393	} else {
2394	set value 0.0
2395	}
2396	set tipx [expr $x + 15]
2397	set tipy [expr $y - 5]
2398	Rappture::Tooltip::text $c "$title $value"
2399	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2400	}
2401
2402	# ----------------------------------------------------------------------
2403	# USAGE: _dropdown post
2404	# USAGE: _dropdown unpost
2405	# USAGE: _dropdown select
2406	#
2407	# Used internally to handle the dropdown list for this combobox. The
2408	# post/unpost options are invoked when the list is posted or unposted
2409	# to manage the relief of the controlling button. The select option
2410	# is invoked whenever there is a selection from the list, to assign
2411	# the value back to the gauge.
2412	# ----------------------------------------------------------------------
2413	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2414	set c $itk_component(view)
2415	switch -- $option {
2416	post {
2417	foreach { x1 y1 x2 y2 } [$c bbox title] break
2418	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2419	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2420	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2421	tk_popup $itk_component(fieldmenu) $x $y
2422	}
2423	activate {
2424	$c itemconfigure title -fill red
2425	}
2426	deactivate {
2427	$c itemconfigure title -fill $itk_option(-plotforeground)
2428	}
2429	invoke {
2430	$itk_component(field) value $_curFldName
2431	AdjustSetting field
2432	}
2433	default {
2434	error "bad option \"$option\": should be post, unpost, select"
2435	}
2436	}
2437	}
2438
2439	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2440	if { $_settings(isHeightmap) } {
2441	set val $_settings(heightmapScale)
2442	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2443	return $sval
2444	}
2445	set sval 0
2446	}
2447
2448	itcl::body Rappture::VtkHeightmapViewer::ResetColormap { color } {
2449	array set style {
2450	-color BCGYR
2451	-levels 10
2452	-opacity 1.0
2453	}
2454	if { [info exists _colormap($_currentColormap)] } {
2455	array set style $_colormap($_currentColormap)
2456	}
2457	set style(-color) $color
2458	SetCurrentColormap [array get style]
2459	}
2460

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