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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 3441

Last change on this file since 3441 was 3441, checked in by gah, 12 years ago
misc cleanup vtkvolumeviewer
File size: 81.9 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 limits3 { dataobj }
61	public method parameters {title args} {
62	# do nothing
63	}
64	public method scale {args}
65
66	protected method Connect {}
67	protected method CurrentDatasets {args}
68	protected method Disconnect {}
69	protected method DoResize {}
70	protected method DoRotate {}
71	protected method AdjustSetting {what {value ""}}
72	protected method AdjustMode {}
73	protected method InitSettings { args }
74	protected method Pan {option x y}
75	protected method Pick {x y}
76	protected method Rebuild {}
77	protected method ReceiveDataset { args }
78	protected method ReceiveImage { args }
79	protected method ReceiveLegend { colormap title min max size }
80	protected method Rotate {option x y}
81	protected method Zoom {option}
82
83	# The following methods are only used by this class.
84	private method BuildAxisTab {}
85	private method BuildCameraTab {}
86	private method BuildColormap { name colors }
87	private method ResetColormap { color }
88	private method BuildContourTab {}
89	private method BuildDownloadPopup { widget command }
90	private method Combo { option }
91	private method ConvertToVtkData { dataobj comp }
92	private method DrawLegend {}
93	private method EnterLegend { x y }
94	private method EventuallyRequestLegend {}
95	private method EventuallyResize { w h }
96	private method EventuallyRotate { q }
97	private method GetImage { args }
98	private method GetVtkData { args }
99	private method IsValidObject { dataobj }
100	private method LeaveLegend {}
101	private method MotionLegend { x y }
102	private method PanCamera {}
103	private method RequestLegend {}
104	private method SetCurrentColormap { stylelist }
105	private method SetLegendTip { x y }
106	private method SetObjectStyle { dataobj comp }
107	private method GetHeightmapScale {}
108	private method EnterIsoline { x y value }
109	private method LeaveIsoline {}
110	private method SetIsolineTip { x y value }
111	private method ResetAxes {}
112
113	private variable _arcball ""
114	private variable _dlist "" ; # list of data objects
115	private variable _obj2datasets
116	private variable _obj2ovride ; # maps dataobj => style override
117	private variable _comp2scale; # maps dataset to the heightmap scale.
118	private variable _datasets ; # contains all the dataobj-component
119	; # datasets in the server
120	private variable _colormaps ; # contains all the colormaps
121	; # in the server.
122
123	# The name of the current colormap used. The colormap is global to all
124	# heightmaps displayed.
125	private variable _currentColormap "" ;
126
127	private variable _click ; # info used for rotate operations
128	private variable _limits ; # Holds overall limits for all dataobjs
129	# using the viewer.
130	private variable _view ; # view params for 3D view
131	private variable _settings
132	private variable _initialStyle ""; # First found style in dataobjects.
133	private variable _reset 1; # Indicates if camera needs to be reset
134	# to starting position.
135	private variable _beforeConnect 1; # Indicates if camera needs to be reset
136	# to starting position.
137
138	private variable _first "" ; # This is the topmost dataset.
139	private variable _start 0
140	private variable _title ""
141	private variable _isolines
142
143	common _downloadPopup; # download options from popup
144	private common _hardcopy
145	private variable _width 0
146	private variable _height 0
147	private variable _legendWidth 0
148	private variable _legendHeight 0
149	private variable _resizePending 0
150	private variable _numIsolinesPending 0
151	private variable _rotatePending 0
152	private variable _legendPending 0
153	private variable _fieldNames {}
154	private variable _fields
155	private variable _curFldName ""
156	private variable _curFldLabel ""
157	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
158	}
159
160	itk::usual VtkHeightmapViewer {
161	keep -background -foreground -cursor -font
162	keep -plotbackground -plotforeground -mode
163	}
164
165	# ----------------------------------------------------------------------
166	# CONSTRUCTOR
167	# ----------------------------------------------------------------------
168	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
169	set _serverType "vtkvis"
170
171	# Rebuild event
172	$_dispatcher register !rebuild
173	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
174
175	# Resize event
176	$_dispatcher register !resize
177	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
178
179	# Rotate event
180	$_dispatcher register !rotate
181	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
182
183	# Legend event
184	$_dispatcher register !legend
185	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
186
187	#
188	# Populate parser with commands handle incoming requests
189	#
190	$_parser alias image [itcl::code $this ReceiveImage]
191	$_parser alias dataset [itcl::code $this ReceiveDataset]
192	$_parser alias legend [itcl::code $this ReceiveLegend]
193	$_parser alias viserror [itcl::code $this ReceiveError]
194
195	# Initialize the view to some default parameters.
196	array set _view {
197	qw 0.36
198	qx 0.25
199	qy 0.50
200	qz 0.70
201	zoom 1.0
202	xpan 0
203	ypan 0
204	ortho 1
205	}
206	set _arcball [blt::arcball create 100 100]
207	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
208	$_arcball quaternion $q
209
210	array set _settings [subst {
211	axisFlymode "static"
212	axisMinorTicks 1
213	stretchToFit 0
214	axisLabels 1
215	axisVisible 1
216	axisXGrid 0
217	axisYGrid 0
218	axisZGrid 0
219	colormapVisible 1
220	edges 0
221	field "Default"
222	heightmapScale 50
223	isHeightmap 0
224	isolineColor black
225	isolinesVisible 1
226	legendVisible 1
227	lighting 1
228	saveLighting 1
229	numIsolines 10
230	opacity 100
231	outline 0
232	wireframe 0
233	saveOpacity 100
234	}]
235
236	itk_component add view {
237	canvas $itk_component(plotarea).view \
238	-highlightthickness 0 -borderwidth 0
239	} {
240	usual
241	ignore -highlightthickness -borderwidth -background
242	}
243
244	itk_component add fieldmenu {
245	menu $itk_component(plotarea).menu \
246	-relief flat \
247	-tearoff no
248	} {
249	usual
250	ignore -background -foreground -relief -tearoff
251	}
252	set c $itk_component(view)
253	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
254	bind $c <4> [itcl::code $this Zoom in 0.25]
255	bind $c <5> [itcl::code $this Zoom out 0.25]
256	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
257	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
258	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
259	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
260	bind $c <Enter> "focus %W"
261	bind $c <Control-F1> [itcl::code $this ToggleConsole]
262
263	# Fix the scrollregion in case we go off screen
264	$c configure -scrollregion [$c bbox all]
265
266	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
267	set _map(cwidth) -1
268	set _map(cheight) -1
269	set _map(zoom) 1.0
270	set _map(original) ""
271
272	set f [$itk_component(main) component controls]
273	itk_component add reset {
274	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
275	-highlightthickness 0 \
276	-image [Rappture::icon reset-view] \
277	-command [itcl::code $this Zoom reset]
278	} {
279	usual
280	ignore -highlightthickness
281	}
282	pack $itk_component(reset) -side top -padx 2 -pady 2
283	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
284
285	itk_component add zoomin {
286	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
287	-highlightthickness 0 \
288	-image [Rappture::icon zoom-in] \
289	-command [itcl::code $this Zoom in]
290	} {
291	usual
292	ignore -highlightthickness
293	}
294	pack $itk_component(zoomin) -side top -padx 2 -pady 2
295	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
296
297	itk_component add zoomout {
298	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
299	-highlightthickness 0 \
300	-image [Rappture::icon zoom-out] \
301	-command [itcl::code $this Zoom out]
302	} {
303	usual
304	ignore -highlightthickness
305	}
306	pack $itk_component(zoomout) -side top -padx 2 -pady 2
307	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
308
309	itk_component add mode {
310	Rappture::PushButton $f.mode \
311	-onimage [Rappture::icon surface] \
312	-offimage [Rappture::icon surface] \
313	-variable [itcl::scope _settings(isHeightmap)] \
314	-command [itcl::code $this AdjustSetting isHeightmap] \
315	}
316	Rappture::Tooltip::for $itk_component(mode) \
317	"Toggle the surface/contour on/off"
318	pack $itk_component(mode) -padx 2 -pady 2
319
320	if { [catch {
321	BuildContourTab
322	BuildAxisTab
323	BuildCameraTab
324	} errs] != 0 } {
325	global errorInfo
326	puts stderr "errs=$errs errorInfo=$errorInfo"
327	}
328	set _image(legend) [image create photo]
329
330	# Hack around the Tk panewindow. The problem is that the requested
331	# size of the 3d view isn't set until an image is retrieved from
332	# the server. So the panewindow uses the tiny size.
333	set w 10000
334	pack forget $itk_component(view)
335	blt::table $itk_component(plotarea) \
336	0,0 $itk_component(view) -fill both -reqwidth $w
337	blt::table configure $itk_component(plotarea) c1 -resize none
338
339	# Bindings for panning via mouse
340	bind $itk_component(view) <ButtonPress-2> \
341	[itcl::code $this Pan click %x %y]
342	bind $itk_component(view) <B2-Motion> \
343	[itcl::code $this Pan drag %x %y]
344	bind $itk_component(view) <ButtonRelease-2> \
345	[itcl::code $this Pan release %x %y]
346
347	bind $itk_component(view) <ButtonRelease-3> \
348	[itcl::code $this Pick %x %y]
349
350	# Bindings for panning via keyboard
351	bind $itk_component(view) <KeyPress-Left> \
352	[itcl::code $this Pan set -10 0]
353	bind $itk_component(view) <KeyPress-Right> \
354	[itcl::code $this Pan set 10 0]
355	bind $itk_component(view) <KeyPress-Up> \
356	[itcl::code $this Pan set 0 -10]
357	bind $itk_component(view) <KeyPress-Down> \
358	[itcl::code $this Pan set 0 10]
359	bind $itk_component(view) <Shift-KeyPress-Left> \
360	[itcl::code $this Pan set -2 0]
361	bind $itk_component(view) <Shift-KeyPress-Right> \
362	[itcl::code $this Pan set 2 0]
363	bind $itk_component(view) <Shift-KeyPress-Up> \
364	[itcl::code $this Pan set 0 -2]
365	bind $itk_component(view) <Shift-KeyPress-Down> \
366	[itcl::code $this Pan set 0 2]
367
368	# Bindings for zoom via keyboard
369	bind $itk_component(view) <KeyPress-Prior> \
370	[itcl::code $this Zoom out]
371	bind $itk_component(view) <KeyPress-Next> \
372	[itcl::code $this Zoom in]
373
374	bind $itk_component(view) <Enter> "focus $itk_component(view)"
375
376	if {[string equal "x11" [tk windowingsystem]]} {
377	# Bindings for zoom via mouse
378	bind $itk_component(view) <4> [itcl::code $this Zoom out]
379	bind $itk_component(view) <5> [itcl::code $this Zoom in]
380	}
381
382	set _image(download) [image create photo]
383
384	eval itk_initialize $args
385	Connect
386	set _beforeConnect 0
387	}
388
389	# ----------------------------------------------------------------------
390	# DESTRUCTOR
391	# ----------------------------------------------------------------------
392	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
393	Disconnect
394	image delete $_image(plot)
395	image delete $_image(download)
396	catch { blt::arcball destroy $_arcball }
397	}
398
399	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
400	if { $_width < 2 } {
401	set _width 500
402	}
403	if { $_height < 2 } {
404	set _height 500
405	}
406	set _start [clock clicks -milliseconds]
407	SendCmd "screen size [expr $_width - 20] $_height"
408
409	set font "Arial 8"
410	set lh [font metrics $font -linespace]
411	set h [expr {$_height - 2 * ($lh + 2)}]
412	if { $h != $_legendHeight } {
413	EventuallyRequestLegend
414	} else {
415	DrawLegend
416	}
417	set _resizePending 0
418	}
419
420	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
421	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
422	SendCmd "camera orient $q"
423	set _rotatePending 0
424	}
425
426	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
427	if { !$_legendPending } {
428	set _legendPending 1
429	$_dispatcher event -idle !legend
430	}
431	}
432
433	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
434	set _width $w
435	set _height $h
436	$_arcball resize $w $h
437	if { !$_resizePending } {
438	set _resizePending 1
439	$_dispatcher event -after 250 !resize
440	}
441	}
442
443	set rotate_delay 100
444
445	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
446	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
447	if { !$_rotatePending } {
448	set _rotatePending 1
449	global rotate_delay
450	$_dispatcher event -after $rotate_delay !rotate
451	}
452	}
453
454	# ----------------------------------------------------------------------
455	# USAGE: add <dataobj> ?<settings>?
456	#
457	# Clients use this to add a data object to the plot. The optional
458	# <settings> are used to configure the plot. Allowed settings are
459	# -color, -brightness, -width, -linestyle, and -raise.
460	# ----------------------------------------------------------------------
461	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
462	array set params {
463	-color auto
464	-width 1
465	-linestyle solid
466	-brightness 0
467	-raise 0
468	-description ""
469	-param ""
470	-type ""
471	}
472	array set params $settings
473	set params(-description) ""
474	set params(-param) ""
475	foreach {opt val} $settings {
476	if {![info exists params($opt)]} {
477	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
478	}
479	set params($opt) $val
480	}
481	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
482	# can't handle -autocolors yet
483	set params(-color) white
484	}
485	set pos [lsearch -exact $dataobj $_dlist]
486	if {$pos < 0} {
487	lappend _dlist $dataobj
488	}
489	set _obj2ovride($dataobj-color) $params(-color)
490	set _obj2ovride($dataobj-width) $params(-width)
491	set _obj2ovride($dataobj-raise) $params(-raise)
492	$_dispatcher event -idle !rebuild
493	}
494
495
496	# ----------------------------------------------------------------------
497	# USAGE: delete ?<dataobj1> <dataobj2> ...?
498	#
499	# Clients use this to delete a dataobj from the plot. If no dataobjs
500	# are specified, then all dataobjs are deleted. No data objects are
501	# deleted. They are only removed from the display list.
502	#
503	# ----------------------------------------------------------------------
504	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
505	if { [llength $args] == 0} {
506	set args $_dlist
507	}
508	# Delete all specified dataobjs
509	set changed 0
510	foreach dataobj $args {
511	set pos [lsearch -exact $_dlist $dataobj]
512	if { $pos < 0 } {
513	continue; # Don't know anything about it.
514	}
515	# Remove it from the dataobj list.
516	set _dlist [lreplace $_dlist $pos $pos]
517	array unset _obj2ovride $dataobj-*
518	array unset _settings $dataobj-*
519	# Append to the end of the dataobj list.
520	#lappend _dlist $dataobj
521	set changed 1
522	}
523	# If anything changed, then rebuild the plot
524	if { $changed } {
525	$_dispatcher event -idle !rebuild
526	}
527	}
528
529	# ----------------------------------------------------------------------
530	# USAGE: get ?-objects?
531	# USAGE: get ?-visible?
532	# USAGE: get ?-image view?
533	#
534	# Clients use this to query the list of objects being plotted, in
535	# order from bottom to top of this result. The optional "-image"
536	# flag can also request the internal images being shown.
537	# ----------------------------------------------------------------------
538	itcl::body Rappture::VtkHeightmapViewer::get {args} {
539	if {[llength $args] == 0} {
540	set args "-objects"
541	}
542
543	set op [lindex $args 0]
544	switch -- $op {
545	"-objects" {
546	# put the dataobj list in order according to -raise options
547	set dlist {}
548	foreach dataobj $_dlist {
549	if { ![IsValidObject $dataobj] } {
550	continue
551	}
552	if {[info exists _obj2ovride($dataobj-raise)] &&
553	$_obj2ovride($dataobj-raise)} {
554	set dlist [linsert $dlist 0 $dataobj]
555	} else {
556	lappend dlist $dataobj
557	}
558	}
559	return $dlist
560	}
561	"-visible" {
562	set dlist {}
563	foreach dataobj $_dlist {
564	if { ![IsValidObject $dataobj] } {
565	continue
566	}
567	if { ![info exists _obj2ovride($dataobj-raise)] } {
568	# No setting indicates that the object isn't visible.
569	continue
570	}
571	# Otherwise use the -raise parameter to put the object to
572	# the front of the list.
573	if { $_obj2ovride($dataobj-raise) } {
574	set dlist [linsert $dlist 0 $dataobj]
575	} else {
576	lappend dlist $dataobj
577	}
578	}
579	return $dlist
580	}
581	-image {
582	if {[llength $args] != 2} {
583	error "wrong # args: should be \"get -image view\""
584	}
585	switch -- [lindex $args end] {
586	view {
587	return $_image(plot)
588	}
589	default {
590	error "bad image name \"[lindex $args end]\": should be view"
591	}
592	}
593	}
594	default {
595	error "bad option \"$op\": should be -objects or -image"
596	}
597	}
598	}
599
600	#
601	# scale --
602	#
603	# This gets called either incrementally as new simulations are
604	# added or all at once as a sequence of heightmaps.
605	# This accounts for all objects--even those not showing on the
606	# screen. Because of this, the limits are appropriate for all
607	# objects as the user scans through data in the ResultSet viewer.
608	#
609	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
610	foreach dataobj $args {
611	foreach axis { x y } {
612	set lim [$dataobj limits $axis]
613	if { ![info exists _limits($axis)] } {
614	set _limits($axis) $lim
615	continue
616	}
617	foreach {min max} $lim break
618	foreach {amin amax} $_limits($axis) break
619	if { $amin > $min } {
620	set amin $min
621	}
622	if { $amax < $max } {
623	set amax $max
624	}
625	set _limits($axis) [list $amin $amax]
626	}
627	foreach { fname lim } [$dataobj fieldlimits] {
628	if { ![info exists _limits($fname)] } {
629	set _limits($fname) $lim
630	continue
631	}
632	foreach {min max} $lim break
633	foreach {fmin fmax} $_limits($fname) break
634	if { $fmin > $min } {
635	set fmin $min
636	}
637	if { $fmax < $max } {
638	set fmax $max
639	}
640	set _limits($fname) [list $fmin $fmax]
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 !rotate
754	$_dispatcher cancel !legend
755	# disconnected -- no more data sitting on server
756	array unset _datasets
757	array unset _data
758	array unset _colormaps
759	array unset _obj2datasets
760	global readyForNextFrame
761	set readyForNextFrame 1
762	}
763
764	# ----------------------------------------------------------------------
765	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
766	#
767	# Invoked automatically whenever the "image" command comes in from
768	# the rendering server. Indicates that binary image data with the
769	# specified <size> will follow.
770	# ----------------------------------------------------------------------
771	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
772	global readyForNextFrame
773	set readyForNextFrame 1
774	array set info {
775	-token "???"
776	-bytes 0
777	-type image
778	}
779	array set info $args
780	set bytes [ReceiveBytes $info(-bytes)]
781	if { $info(-type) == "image" } {
782	if 0 {
783	set f [open "last.ppm" "w"]
784	puts $f $bytes
785	close $f
786	}
787	$_image(plot) configure -data $bytes
788	set time [clock seconds]
789	set date [clock format $time]
790	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
791	if { $_start > 0 } {
792	set finish [clock clicks -milliseconds]
793	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
794	set _start 0
795	}
796	} elseif { $info(type) == "print" } {
797	set tag $this-print-$info(-token)
798	set _hardcopy($tag) $bytes
799	}
800	}
801
802	#
803	# ReceiveDataset --
804	#
805	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
806	if { ![isconnected] } {
807	return
808	}
809	set option [lindex $args 0]
810	switch -- $option {
811	"scalar" {
812	set option [lindex $args 1]
813	switch -- $option {
814	"world" {
815	foreach { x y z value tag } [lrange $args 2 end] break
816	}
817	"pixel" {
818	foreach { x y value tag } [lrange $args 2 end] break
819	}
820	}
821	}
822	"vector" {
823	set option [lindex $args 1]
824	switch -- $option {
825	"world" {
826	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
827	}
828	"pixel" {
829	foreach { x y vx vy vz tag } [lrange $args 2 end] break
830	}
831	}
832	}
833	"names" {
834	foreach { name } [lindex $args 1] {
835	#puts stderr "Dataset: $name"
836	}
837	}
838	default {
839	error "unknown dataset option \"$option\" from server"
840	}
841	}
842	}
843
844	# ----------------------------------------------------------------------
845	# USAGE: Rebuild
846	#
847	# Called automatically whenever something changes that affects the
848	# data in the widget. Clears any existing data and rebuilds the
849	# widget to display new data.
850	# ----------------------------------------------------------------------
851	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
852	set w [winfo width $itk_component(view)]
853	set h [winfo height $itk_component(view)]
854	if { $w < 2 \|\| $h < 2 } {
855	$_dispatcher event -idle !rebuild
856	return
857	}
858
859	StartBufferingCommands
860	# Turn on buffering of commands to the server. We don't want to
861	# be preempted by a server disconnect/reconnect (which automatically
862	# generates a new call to Rebuild).
863	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
864	set _width $w
865	set _height $h
866	$_arcball resize $w $h
867	DoResize
868	if { $_settings(stretchToFit) } {
869	AdjustSetting stretchToFit
870	}
871	}
872	if { $_reset } {
873	if { $_reportClientInfo } {
874	# Tell the server the name of the tool, the version, and dataset
875	# that we are rendering. Have to do it here because we don't know
876	# what data objects are using the renderer until be get here.
877	global env
878
879	set info {}
880	set user "???"
881	if { [info exists env(USER)] } {
882	set user $env(USER)
883	}
884	set session "???"
885	if { [info exists env(SESSION)] } {
886	set session $env(SESSION)
887	}
888	lappend info "hub" [exec hostname]
889	lappend info "client" "vtkheightmapviewer"
890	lappend info "user" $user
891	lappend info "session" $session
892	SendCmd "clientinfo [list $info]"
893	}
894	InitSettings isHeightmap background
895	#
896	# Reset the camera and other view parameters
897	#
898	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
899	SendCmd "axis lrot z 90"
900	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
901	$_arcball quaternion $q
902	if {$_settings(isHeightmap) } {
903	if { $_view(ortho)} {
904	SendCmd "camera mode ortho"
905	} else {
906	SendCmd "camera mode persp"
907	}
908	SendCmd "camera reset"
909	DoRotate
910	}
911	PanCamera
912	SendCmd "imgflush"
913	}
914
915	set _first ""
916	# Start off with no datasets are visible.
917	SendCmd "dataset visible 0"
918	set scale [GetHeightmapScale]
919	foreach dataobj [get -objects] {
920	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
921	set _first $dataobj
922	}
923	set _obj2datasets($dataobj) ""
924	foreach comp [$dataobj components] {
925	set tag $dataobj-$comp
926	if { ![info exists _datasets($tag)] } {
927	set bytes [$dataobj vtkdata $comp]
928	if 0 {
929	set f [open /tmp/vtkheightmap.vtk "w"]
930	puts $f $bytes
931	close $f
932	}
933	set length [string length $bytes]
934	if { $_reportClientInfo } {
935	set info {}
936	lappend info "tool_id" [$dataobj hints toolId]
937	lappend info "tool_name" [$dataobj hints toolName]
938	lappend info "tool_version" [$dataobj hints toolRevision]
939	lappend info "tool_title" [$dataobj hints toolTitle]
940	lappend info "dataset_label" [$dataobj hints label]
941	lappend info "dataset_size" $length
942	lappend info "dataset_tag" $tag
943	SendCmd [list "clientinfo" $info]
944	}
945	SendCmd "dataset add $tag data follows $length"
946	append _outbuf $bytes
947	set _datasets($tag) 1
948	SetObjectStyle $dataobj $comp
949	}
950	lappend _obj2datasets($dataobj) $tag
951	if { [info exists _obj2ovride($dataobj-raise)] } {
952	SendCmd "heightmap visible 1 $tag"
953	}
954	if { ![info exists _comp2scale($tag)] \|\|
955	$_comp2scale($tag) != $scale } {
956	SendCmd "heightmap heightscale $scale $tag"
957	set _comp2scale($tag) $scale
958	}
959	}
960	}
961	if { $_first != "" } {
962	$itk_component(field) choices delete 0 end
963	$itk_component(fieldmenu) delete 0 end
964	array unset _fields
965	set _curFldName ""
966	foreach cname [$_first components] {
967	foreach fname [$_first fieldnames $cname] {
968	if { [info exists _fields($fname)] } {
969	continue
970	}
971	foreach { label units components } \
972	[$_first fieldinfo $fname] break
973	$itk_component(field) choices insert end "$fname" "$label"
974	$itk_component(fieldmenu) add radiobutton -label "$label" \
975	-value $label -variable [itcl::scope _curFldLabel] \
976	-selectcolor red \
977	-activebackground $itk_option(-plotbackground) \
978	-activeforeground $itk_option(-plotforeground) \
979	-font "Arial 8" \
980	-command [itcl::code $this Combo invoke]
981	set _fields($fname) [list $label $units $components]
982	if { $_curFldName == "" } {
983	set _curFldName $fname
984	set _curFldLabel $label
985	}
986	}
987	}
988	$itk_component(field) value $_curFldLabel
989	}
990	InitSettings stretchToFit
991
992	if { $_reset } {
993	SendCmd "axis tickpos outside"
994	foreach axis { x y z } {
995	SendCmd "axis lformat $axis %g"
996	}
997
998	foreach axis { x y z } {
999	set label [$_first hints ${axis}label]
1000	if { $label == "" } {
1001	if {$axis == "z"} {
1002	if { $_curFldName == "component" } {
1003	set label [string toupper $axis]
1004	} else {
1005	set label $_curFldLabel
1006	}
1007	} else {
1008	set label [string toupper $axis]
1009	}
1010	}
1011	# May be a space in the axis label.
1012	SendCmd [list axis name $axis $label]
1013
1014	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1015	set units [lindex $_fields($_curFldName) 1]
1016	} else {
1017	set units [$_first hints ${axis}units]
1018	}
1019	if { $units != "" } {
1020	# May be a space in the axis units.
1021	SendCmd [list axis units $axis $units]
1022	}
1023	}
1024	#
1025	# Reset the camera and other view parameters
1026	#
1027	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
1028	SendCmd "dataset color [Color2RGB $itk_option(-plotforeground)]"
1029	ResetAxes
1030	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1031	$_arcball quaternion $q
1032	if {$_settings(isHeightmap) } {
1033	if { $_view(ortho)} {
1034	SendCmd "camera mode ortho"
1035	} else {
1036	SendCmd "camera mode persp"
1037	}
1038	SendCmd "camera reset"
1039	DoRotate
1040	}
1041	PanCamera
1042	InitSettings axisXGrid axisYGrid axisZGrid \
1043	axisVisible axisLabels
1044	InitSettings opacity heightmapScale lighting edges wireframe \
1045	colormap field outline isHeightmap
1046	if { [array size _fields] < 2 } {
1047	blt::table forget $itk_component(field) $itk_component(field_l)
1048	}
1049	RequestLegend
1050	set _reset 0
1051	}
1052	global readyForNextFrame
1053	set readyForNextFrame 0; # Don't advance to the next frame
1054
1055	# Actually write the commands to the server socket. If it fails, we don't
1056	# care. We're finished here.
1057	blt::busy hold $itk_component(hull)
1058	StopBufferingCommands
1059	blt::busy release $itk_component(hull)
1060	}
1061
1062	# ----------------------------------------------------------------------
1063	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1064	#
1065	# Returns a list of server IDs for the current datasets being displayed. This
1066	# is normally a single ID, but it might be a list of IDs if the current data
1067	# object has multiple components.
1068	# ----------------------------------------------------------------------
1069	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1070	set flag [lindex $args 0]
1071	switch -- $flag {
1072	"-all" {
1073	if { [llength $args] > 1 } {
1074	error "CurrentDatasets: can't specify dataobj after \"-all\""
1075	}
1076	set dlist [get -objects]
1077	}
1078	"-visible" {
1079	if { [llength $args] > 1 } {
1080	set dlist {}
1081	set args [lrange $args 1 end]
1082	foreach dataobj $args {
1083	if { [info exists _obj2ovride($dataobj-raise)] } {
1084	lappend dlist $dataobj
1085	}
1086	}
1087	} else {
1088	set dlist [get -visible]
1089	}
1090	}
1091	default {
1092	set dlist $args
1093	}
1094	}
1095	set rlist ""
1096	foreach dataobj $dlist {
1097	foreach comp [$dataobj components] {
1098	set tag $dataobj-$comp
1099	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1100	lappend rlist $tag
1101	}
1102	}
1103	}
1104	return $rlist
1105	}
1106
1107	# ----------------------------------------------------------------------
1108	# USAGE: Zoom in
1109	# USAGE: Zoom out
1110	# USAGE: Zoom reset
1111	#
1112	# Called automatically when the user clicks on one of the zoom
1113	# controls for this widget. Changes the zoom for the current view.
1114	# ----------------------------------------------------------------------
1115	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1116	switch -- $option {
1117	"in" {
1118	set _view(zoom) [expr {$_view(zoom)*1.25}]
1119	SendCmd "camera zoom $_view(zoom)"
1120	}
1121	"out" {
1122	set _view(zoom) [expr {$_view(zoom)*0.8}]
1123	SendCmd "camera zoom $_view(zoom)"
1124	}
1125	"reset" {
1126	array set _view {
1127	qw 0.36
1128	qx 0.25
1129	qy 0.50
1130	qz 0.70
1131	zoom 1.0
1132	xpan 0
1133	ypan 0
1134	}
1135	if { $_first != "" } {
1136	set location [$_first hints camera]
1137	if { $location != "" } {
1138	array set _view $location
1139	}
1140	}
1141	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1142	$_arcball quaternion $q
1143	SendCmd "camera reset"
1144	if {$_settings(isHeightmap) } {
1145	DoRotate
1146	}
1147	}
1148	}
1149	}
1150
1151	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1152	set x $_view(xpan)
1153	set y $_view(ypan)
1154	SendCmd "camera pan $x $y"
1155	}
1156
1157
1158	# ----------------------------------------------------------------------
1159	# USAGE: Rotate click <x> <y>
1160	# USAGE: Rotate drag <x> <y>
1161	# USAGE: Rotate release <x> <y>
1162	#
1163	# Called automatically when the user clicks/drags/releases in the
1164	# plot area. Moves the plot according to the user's actions.
1165	# ----------------------------------------------------------------------
1166	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1167	switch -- $option {
1168	"click" {
1169	$itk_component(view) configure -cursor fleur
1170	set _click(x) $x
1171	set _click(y) $y
1172	}
1173	"drag" {
1174	if {[array size _click] == 0} {
1175	Rotate click $x $y
1176	} else {
1177	set w [winfo width $itk_component(view)]
1178	set h [winfo height $itk_component(view)]
1179	if {$w <= 0 \|\| $h <= 0} {
1180	return
1181	}
1182
1183	if {[catch {
1184	# this fails sometimes for no apparent reason
1185	set dx [expr {double($x-$_click(x))/$w}]
1186	set dy [expr {double($y-$_click(y))/$h}]
1187	}]} {
1188	return
1189	}
1190	if { $dx == 0 && $dy == 0 } {
1191	return
1192	}
1193	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1194	EventuallyRotate $q
1195	set _click(x) $x
1196	set _click(y) $y
1197	}
1198	}
1199	"release" {
1200	Rotate drag $x $y
1201	$itk_component(view) configure -cursor ""
1202	catch {unset _click}
1203	}
1204	default {
1205	error "bad option \"$option\": should be click, drag, release"
1206	}
1207	}
1208	}
1209
1210	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1211	foreach tag [CurrentDatasets -visible] {
1212	SendCmd "dataset getscalar pixel $x $y $tag"
1213	}
1214	}
1215
1216	# ----------------------------------------------------------------------
1217	# USAGE: $this Pan click x y
1218	# $this Pan drag x y
1219	# $this Pan release x y
1220	#
1221	# Called automatically when the user clicks on one of the zoom
1222	# controls for this widget. Changes the zoom for the current view.
1223	# ----------------------------------------------------------------------
1224	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1225	switch -- $option {
1226	"set" {
1227	set w [winfo width $itk_component(view)]
1228	set h [winfo height $itk_component(view)]
1229	set x [expr $x / double($w)]
1230	set y [expr $y / double($h)]
1231	set _view(xpan) [expr $_view(xpan) + $x]
1232	set _view(ypan) [expr $_view(ypan) + $y]
1233	PanCamera
1234	return
1235	}
1236	"click" {
1237	set _click(x) $x
1238	set _click(y) $y
1239	$itk_component(view) configure -cursor hand1
1240	}
1241	"drag" {
1242	if { ![info exists _click(x)] } {
1243	set _click(x) $x
1244	}
1245	if { ![info exists _click(y)] } {
1246	set _click(y) $y
1247	}
1248	set w [winfo width $itk_component(view)]
1249	set h [winfo height $itk_component(view)]
1250	set dx [expr ($_click(x) - $x)/double($w)]
1251	set dy [expr ($_click(y) - $y)/double($h)]
1252	set _click(x) $x
1253	set _click(y) $y
1254	set _view(xpan) [expr $_view(xpan) - $dx]
1255	set _view(ypan) [expr $_view(ypan) - $dy]
1256	PanCamera
1257	}
1258	"release" {
1259	Pan drag $x $y
1260	$itk_component(view) configure -cursor ""
1261	}
1262	default {
1263	error "unknown option \"$option\": should set, click, drag, or release"
1264	}
1265	}
1266	}
1267
1268	# ----------------------------------------------------------------------
1269	# USAGE: InitSettings <what> ?<value>?
1270	#
1271	# Used internally to update rendering settings whenever parameters
1272	# change in the popup settings panel. Sends the new settings off
1273	# to the back end.
1274	# ----------------------------------------------------------------------
1275	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1276	foreach spec $args {
1277	if { [info exists _settings($_first-$spec)] } {
1278	# Reset global setting with dataobj specific setting
1279	set _settings($spec) $_settings($_first-$spec)
1280	}
1281	AdjustSetting $spec
1282	}
1283	}
1284
1285	#
1286	# AdjustSetting --
1287	#
1288	# Changes/updates a specific setting in the widget. There are
1289	# usually user-setable option. Commands are sent to the render
1290	# server.
1291	#
1292	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1293	if { $_beforeConnect } {
1294	return
1295	}
1296	switch -- $what {
1297	"axisFlymode" {
1298	set mode [$itk_component(axisflymode) value]
1299	set mode [$itk_component(axisflymode) translate $mode]
1300	set _settings($what) $mode
1301	SendCmd "axis flymode $mode"
1302	}
1303	"axisLabels" {
1304	set bool $_settings(axisLabels)
1305	SendCmd "axis labels all $bool"
1306	}
1307	"axisMinorTicks" {
1308	set bool $_settings(axisMinorTicks)
1309	foreach axis { x y z } {
1310	SendCmd "axis minticks ${axis} $bool"
1311	}
1312	}
1313	"axisVisible" {
1314	set bool $_settings(axisVisible)
1315	SendCmd "axis visible all $bool"
1316	}
1317	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1318	set axis [string tolower [string range $what 4 4]]
1319	set bool $_settings($what)
1320	SendCmd "axis grid $axis $bool"
1321	}
1322	"background" {
1323	set bgcolor [$itk_component(background) value]
1324	array set fgcolors {
1325	"black" "white"
1326	"white" "black"
1327	"grey" "black"
1328	}
1329	configure -plotbackground $bgcolor \
1330	-plotforeground $fgcolors($bgcolor)
1331	$itk_component(view) delete "legend"
1332	DrawLegend
1333	}
1334	"colormap" {
1335	StartBufferingCommands
1336	set color [$itk_component(colormap) value]
1337	set _settings(colormap) $color
1338	if { $color == "none" } {
1339	if { $_settings(colormapVisible) } {
1340	SendCmd "heightmap surface 0"
1341	set _settings(colormapVisible) 0
1342	}
1343	} else {
1344	if { !$_settings(colormapVisible) } {
1345	SendCmd "heightmap surface 1"
1346	set _settings(colormapVisible) 1
1347	}
1348	ResetColormap $color
1349	SendCmd "heightmap colormap $_currentColormap"
1350	}
1351	#SendCmd "heightmap colormode scalar $_curFldName"
1352	#SendCmd "dataset scalar $_curFldName"
1353	StopBufferingCommands
1354	EventuallyRequestLegend
1355	}
1356	"colormapVisible" {
1357	set bool $_settings($what)
1358	SendCmd "heightmap surface $bool"
1359	}
1360	"edges" {
1361	set bool $_settings(edges)
1362	SendCmd "heightmap edges $bool"
1363	}
1364	"field" {
1365	set label [$itk_component(field) value]
1366	set fname [$itk_component(field) translate $label]
1367	set _settings(field) $fname
1368	if { [info exists _fields($fname)] } {
1369	foreach { label units components } $_fields($fname) break
1370	if { $components > 1 } {
1371	set _colorMode vmag
1372	} else {
1373	set _colorMode scalar
1374	}
1375	set _curFldName $fname
1376	set _curFldLabel $label
1377	} else {
1378	puts stderr "unknown field \"$fname\""
1379	return
1380	}
1381	set label [$_first hints zlabel]
1382	if { $label == "" } {
1383	if { $_curFldName == "component" } {
1384	set label Z
1385	} else {
1386	set label $_curFldLabel
1387	}
1388	} else {
1389	set label Z
1390	}
1391	# May be a space in the axis label.
1392	SendCmd [list axis name z $label]
1393
1394	if { [$_first hints zunits] == "" } {
1395	set units [lindex $_fields($_curFldName) 1]
1396	} else {
1397	set units [$_first hints zunits]
1398	}
1399	if { $units != "" } {
1400	# May be a space in the axis units.
1401	SendCmd [list axis units $axis $units]
1402	}
1403	# Get the new limits because the field changed.
1404	ResetAxes
1405	SendCmd "dataset scalar $_curFldName"
1406	SendCmd "heightmap colormode scalar $_curFldName"
1407	SendCmd "camera reset"
1408	DrawLegend
1409	}
1410	"heightmapScale" {
1411	if { $_settings(isHeightmap) } {
1412	set scale [GetHeightmapScale]
1413	foreach dataset [CurrentDatasets -all] {
1414	SendCmd "heightmap heightscale $scale $dataset"
1415	set _comp2scale($dataset) $scale
1416	}
1417	ResetAxes
1418	}
1419	}
1420	"isHeightmap" {
1421	set bool $_settings(isHeightmap)
1422	set c $itk_component(view)
1423	StartBufferingCommands
1424	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1425	if { $bool } {
1426	set _settings(heightmapScale) 50
1427	set _settings(opacity) $_settings(saveOpacity)
1428	set _settings(lighting) $_settings(saveLighting)
1429	} else {
1430	set _settings(heightmapScale) 0
1431	set _settings(lighting) 0
1432	set _settings(opacity) 100
1433	}
1434	AdjustSetting lighting
1435	AdjustSetting opacity
1436	set scale [GetHeightmapScale]
1437	foreach dataset [CurrentDatasets -all] {
1438	SendCmd "heightmap heightscale $scale $dataset"
1439	set _comp2scale($dataset) $scale
1440	}
1441	if { $bool } {
1442	$itk_component(lighting) configure -state normal
1443	$itk_component(opacity) configure -state normal
1444	$itk_component(scale) configure -state normal
1445	$itk_component(opacity_l) configure -state normal
1446	$itk_component(scale_l) configure -state normal
1447	if {$_view(ortho)} {
1448	SendCmd "camera mode ortho"
1449	} else {
1450	SendCmd "camera mode persp"
1451	}
1452	} else {
1453	$itk_component(lighting) configure -state disabled
1454	$itk_component(opacity) configure -state disabled
1455	$itk_component(scale) configure -state disabled
1456	$itk_component(opacity_l) configure -state disabled
1457	$itk_component(scale_l) configure -state disabled
1458	SendCmd "camera mode image"
1459	}
1460	if {$_settings(stretchToFit)} {
1461	if {$scale == 0} {
1462	SendCmd "camera aspect window"
1463	} else {
1464	SendCmd "camera aspect square"
1465	}
1466	}
1467	ResetAxes
1468	SendCmd "camera reset"
1469	if { $bool } {
1470	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1471	$_arcball quaternion $q
1472	SendCmd "camera orient $q"
1473	} else {
1474	bind $c <ButtonPress-1> {}
1475	bind $c <B1-Motion> {}
1476	bind $c <ButtonRelease-1> {}
1477	}
1478	# Fix the mouse bindings for rotation/panning and the
1479	# camera mode. Ideally we'd create a bindtag for these.
1480	if { $bool } {
1481	# Bindings for rotation via mouse
1482	bind $c <ButtonPress-1> \
1483	[itcl::code $this Rotate click %x %y]
1484	bind $c <B1-Motion> \
1485	[itcl::code $this Rotate drag %x %y]
1486	bind $c <ButtonRelease-1> \
1487	[itcl::code $this Rotate release %x %y]
1488	}
1489	StopBufferingCommands
1490	}
1491	"isolineColor" {
1492	set color [$itk_component(isolinecolor) value]
1493	if { $color == "none" } {
1494	if { $_settings(isolinesVisible) } {
1495	SendCmd "heightmap isolines 0"
1496	set _settings(isolinesVisible) 0
1497	}
1498	} else {
1499	if { !$_settings(isolinesVisible) } {
1500	SendCmd "heightmap isolines 1"
1501	set _settings(isolinesVisible) 1
1502	}
1503	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1504	}
1505	DrawLegend
1506	}
1507	"isolinesVisible" {
1508	set bool $_settings($what)
1509	SendCmd "heightmap isolines $bool"
1510	DrawLegend
1511	}
1512	"legendVisible" {
1513	if { !$_settings($what) } {
1514	$itk_component(view) delete legend
1515	}
1516	DrawLegend
1517	}
1518	"lighting" {
1519	if { $_settings(isHeightmap) } {
1520	set _settings(saveLighting) $_settings(lighting)
1521	set bool $_settings($what)
1522	SendCmd "heightmap lighting $bool"
1523	} else {
1524	SendCmd "heightmap lighting 0"
1525	}
1526	}
1527	"numIsolines" {
1528	set _settings(numIsolines) [$itk_component(numisolines) value]
1529	SendCmd "heightmap numcontours $_settings(numIsolines)"
1530	DrawLegend
1531	}
1532	"opacity" {
1533	if { $_settings(isHeightmap) } {
1534	set _settings(saveOpacity) $_settings(opacity)
1535	set val $_settings(opacity)
1536	set sval [expr { 0.01 * double($val) }]
1537	SendCmd "heightmap opacity $sval"
1538	} else {
1539	SendCmd "heightmap opacity 1"
1540	}
1541	}
1542	"outline" {
1543	set bool $_settings($what)
1544	SendCmd "dataset outline $bool"
1545	}
1546	"stretchToFit" {
1547	set bool $_settings($what)
1548	if { $bool } {
1549	set heightScale [GetHeightmapScale]
1550	if {$heightScale == 0} {
1551	SendCmd "camera aspect window"
1552	} else {
1553	SendCmd "camera aspect square"
1554	}
1555	} else {
1556	SendCmd "camera aspect native"
1557	}
1558	}
1559	"wireframe" {
1560	set bool $_settings($what)
1561	SendCmd "heightmap wireframe $bool"
1562	}
1563	default {
1564	error "don't know how to fix $what"
1565	}
1566	}
1567	}
1568
1569	#
1570	# RequestLegend --
1571	#
1572	# Request a new legend from the server. The size of the legend
1573	# is determined from the height of the canvas.
1574	#
1575	# This should be called when
1576	# 1. A new current colormap is set.
1577	# 2. Window is resized.
1578	# 3. The limits of the data have changed. (Just need a redraw).
1579	# 4. Number of isolines have changed. (Just need a redraw).
1580	# 5. Legend becomes visible (Just need a redraw).
1581	#
1582	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1583	set _legendPending 0
1584	set font "Arial 8"
1585	set w 12
1586	set lineht [font metrics $font -linespace]
1587	# color ramp height = (canvas height) - (min and max value lines) - 2
1588	set h [expr {$_height - 2 * ($lineht + 2)}]
1589	set _legendHeight $h
1590
1591	set fname $_curFldName
1592	if { $fname == "component" } {
1593	set title ""
1594	} else {
1595	if { [info exists _fields($fname)] } {
1596	foreach { title units } $_fields($fname) break
1597	if { $units != "" } {
1598	set title [format "%s (%s)" $title $units]
1599	}
1600	} else {
1601	set title $fname
1602	}
1603	}
1604	# If there's a title too, substract one more line
1605	if { $title != "" } {
1606	incr h -$lineht
1607	}
1608	if { $h < 1} {
1609	return
1610	}
1611	# Set the legend on the first heightmap dataset.
1612	if { $_currentColormap != "" } {
1613	set cmap $_currentColormap
1614	SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1615	#SendCmd "heightmap colormode scalar $_curFldName"
1616	#SendCmd "dataset scalar $_curFldName"
1617	}
1618	}
1619
1620	#
1621	# ResetAxes --
1622	#
1623	# Set axis z bounds and range
1624	#
1625	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1626	if { ![info exists _fields($_curFldName)]} {
1627	SendCmd "dataset maprange all"
1628	SendCmd "axis autorange z on"
1629	SendCmd "axis autobounds z on"
1630	return
1631	}
1632	foreach { xmin xmax } $_limits(x) break
1633	foreach { ymin ymax } $_limits(y) break
1634	foreach { vmin vmax } $_limits($_curFldName) break
1635
1636	global tcl_precision
1637	set tcl_precision 17
1638	set xr [expr $xmax - $xmin]
1639	set yr [expr $ymax - $ymin]
1640	set vr [expr $vmax - $vmin]
1641	set r [expr ($yr > $xr) ? $yr : $xr]
1642	if { $vr < 1.0e-17 } {
1643	set dataScale 1.0
1644	} else {
1645	set dataScale [expr $r / $vr]
1646	}
1647	set heightScale [GetHeightmapScale]
1648	set bmin [expr $heightScale * $dataScale * $vmin]
1649	set bmax [expr $heightScale * $dataScale * $vmax]
1650	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1651	SendCmd "axis bounds z $bmin $bmax"
1652	SendCmd "axis range z $_limits($_curFldName)"
1653	}
1654
1655	#
1656	# SetCurrentColormap --
1657	#
1658	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { stylelist } {
1659	array set style {
1660	-color BCGYR
1661	-levels 10
1662	-opacity 1.0
1663	}
1664	array set style $stylelist
1665
1666	set name "$style(-color):$style(-levels):$style(-opacity)"
1667	if { ![info exists _colormaps($name)] } {
1668	set stylelist [array get style]
1669	BuildColormap $name $stylelist
1670	set _colormaps($name) $stylelist
1671	}
1672	set _currentColormap $name
1673	}
1674
1675
1676	#
1677	# BuildColormap --
1678	#
1679	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name stylelist } {
1680	array set style $stylelist
1681	set cmap [ColorsToColormap $style(-color)]
1682	if { [llength $cmap] == 0 } {
1683	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1684	}
1685	if { ![info exists _settings(opacity)] } {
1686	set _settings(opacity) $style(-opacity)
1687	}
1688	set max $_settings(opacity)
1689
1690	set wmap "0.0 1.0 1.0 1.0"
1691	SendCmd "colormap add $name { $cmap } { $wmap }"
1692	}
1693
1694	# ----------------------------------------------------------------------
1695	# CONFIGURATION OPTION: -mode
1696	# ----------------------------------------------------------------------
1697	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1698	switch -- $itk_option(-mode) {
1699	"heightmap" {
1700	set _settings(isHeightmap) 1
1701	}
1702	"contour" {
1703	set _settings(isHeightmap) 0
1704	}
1705	default {
1706	error "unknown mode settings \"$itk_option(-mode)\""
1707	}
1708	}
1709	AdjustSetting isHeightmap
1710	}
1711
1712	# ----------------------------------------------------------------------
1713	# CONFIGURATION OPTION: -plotbackground
1714	# ----------------------------------------------------------------------
1715	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1716	if { [isconnected] } {
1717	set rgb [Color2RGB $itk_option(-plotbackground)]
1718	SendCmd "screen bgcolor $rgb"
1719	$itk_component(view) configure -background $itk_option(-plotbackground)
1720	}
1721	}
1722
1723	# ----------------------------------------------------------------------
1724	# CONFIGURATION OPTION: -plotforeground
1725	# ----------------------------------------------------------------------
1726	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1727	if { [isconnected] } {
1728	set rgb [Color2RGB $itk_option(-plotforeground)]
1729	SendCmd "dataset color $rgb"
1730	SendCmd "axis color all $rgb"
1731	}
1732	}
1733
1734	itcl::body Rappture::VtkHeightmapViewer::limits3 { dataobj } {
1735	lappend limits x [$dataobj limits x]
1736	lappend limits y [$dataobj limits y]
1737	if { [catch { $dataobj limits $_curFldName } vlim] != 0 } {
1738	set vlim [$dataobj limits v]
1739	}
1740	lappend limits v $vlim
1741	return $limits
1742	}
1743
1744	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1745
1746	set fg [option get $itk_component(hull) font Font]
1747	#set bfg [option get $itk_component(hull) boldFont Font]
1748
1749	set inner [$itk_component(main) insert end \
1750	-title "Contour/Surface Settings" \
1751	-icon [Rappture::icon contour]]
1752	$inner configure -borderwidth 4
1753
1754	checkbutton $inner.legend \
1755	-text "Legend" \
1756	-variable [itcl::scope _settings(legendVisible)] \
1757	-command [itcl::code $this AdjustSetting legendVisible] \
1758	-font "Arial 9"
1759
1760	checkbutton $inner.wireframe \
1761	-text "Wireframe" \
1762	-variable [itcl::scope _settings(wireframe)] \
1763	-command [itcl::code $this AdjustSetting wireframe] \
1764	-font "Arial 9"
1765
1766	itk_component add lighting {
1767	checkbutton $inner.lighting \
1768	-text "Enable Lighting" \
1769	-variable [itcl::scope _settings(lighting)] \
1770	-command [itcl::code $this AdjustSetting lighting] \
1771	-font "Arial 9"
1772	} {
1773	ignore -font
1774	}
1775	checkbutton $inner.edges \
1776	-text "Edges" \
1777	-variable [itcl::scope _settings(edges)] \
1778	-command [itcl::code $this AdjustSetting edges] \
1779	-font "Arial 9"
1780
1781	checkbutton $inner.outline \
1782	-text "Outline" \
1783	-variable [itcl::scope _settings(outline)] \
1784	-command [itcl::code $this AdjustSetting outline] \
1785	-font "Arial 9"
1786
1787	checkbutton $inner.stretch \
1788	-text "Stretch to fit" \
1789	-variable [itcl::scope _settings(stretchToFit)] \
1790	-command [itcl::code $this AdjustSetting stretchToFit] \
1791	-font "Arial 9"
1792
1793	checkbutton $inner.isolines \
1794	-text "Isolines" \
1795	-variable [itcl::scope _settings(isolinesVisible)] \
1796	-command [itcl::code $this AdjustSetting isolinesVisible] \
1797	-font "Arial 9"
1798
1799	itk_component add field_l {
1800	label $inner.field_l -text "Field" -font "Arial 9"
1801	} {
1802	ignore -font
1803	}
1804	itk_component add field {
1805	Rappture::Combobox $inner.field -width 10 -editable no
1806	}
1807	bind $inner.field <<Value>> \
1808	[itcl::code $this AdjustSetting field]
1809
1810	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1811	itk_component add colormap {
1812	Rappture::Combobox $inner.colormap -width 10 -editable no
1813	}
1814	$inner.colormap choices insert end \
1815	"BCGYR" "BCGYR" \
1816	"BGYOR" "BGYOR" \
1817	"blue" "blue" \
1818	"blue-to-brown" "blue-to-brown" \
1819	"blue-to-orange" "blue-to-orange" \
1820	"blue-to-grey" "blue-to-grey" \
1821	"green-to-magenta" "green-to-magenta" \
1822	"greyscale" "greyscale" \
1823	"nanohub" "nanohub" \
1824	"rainbow" "rainbow" \
1825	"spectral" "spectral" \
1826	"ROYGB" "ROYGB" \
1827	"RYGCB" "RYGCB" \
1828	"brown-to-blue" "brown-to-blue" \
1829	"grey-to-blue" "grey-to-blue" \
1830	"orange-to-blue" "orange-to-blue" \
1831	"none" "none"
1832
1833	$itk_component(colormap) value "BCGYR"
1834	bind $inner.colormap <<Value>> \
1835	[itcl::code $this AdjustSetting colormap]
1836
1837	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1838	itk_component add isolinecolor {
1839	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1840	}
1841	$inner.isolinecolor choices insert end \
1842	"black" "black" \
1843	"blue" "blue" \
1844	"cyan" "cyan" \
1845	"green" "green" \
1846	"grey" "grey" \
1847	"magenta" "magenta" \
1848	"orange" "orange" \
1849	"red" "red" \
1850	"white" "white" \
1851	"none" "none"
1852
1853	$itk_component(isolinecolor) value "black"
1854	bind $inner.isolinecolor <<Value>> \
1855	[itcl::code $this AdjustSetting isolineColor]
1856
1857	label $inner.background_l -text "Background Color" -font "Arial 9"
1858	itk_component add background {
1859	Rappture::Combobox $inner.background -width 10 -editable no
1860	}
1861	$inner.background choices insert end \
1862	"black" "black" \
1863	"white" "white" \
1864	"grey" "grey"
1865
1866	$itk_component(background) value "white"
1867	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1868
1869	itk_component add opacity_l {
1870	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1871	} {
1872	ignore -font
1873	}
1874	itk_component add opacity {
1875	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1876	-variable [itcl::scope _settings(opacity)] \
1877	-showvalue off \
1878	-command [itcl::code $this AdjustSetting opacity]
1879	}
1880	itk_component add scale_l {
1881	label $inner.scale_l -text "Scale" -font "Arial 9"
1882	} {
1883	ignore -font
1884	}
1885	itk_component add scale {
1886	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1887	-variable [itcl::scope _settings(heightmapScale)] \
1888	-showvalue off \
1889	-command [itcl::code $this AdjustSetting heightmapScale]
1890	}
1891	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1892	itk_component add numisolines {
1893	Rappture::Spinint $inner.numisolines \
1894	-min 0 -max 50 -font "arial 9"
1895	}
1896	$itk_component(numisolines) value $_settings(numIsolines)
1897	bind $itk_component(numisolines) <<Value>> \
1898	[itcl::code $this AdjustSetting numIsolines]
1899
1900	frame $inner.separator -height 2 -relief sunken -bd 1
1901	blt::table $inner \
1902	0,0 $inner.field_l -anchor w -pady 2 \
1903	0,1 $inner.field -anchor w -pady 2 -fill x \
1904	1,0 $inner.colormap_l -anchor w -pady 2 \
1905	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1906	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
1907	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
1908	3,0 $inner.background_l -anchor w -pady 2 \
1909	3,1 $inner.background -anchor w -pady 2 -fill x \
1910	4,0 $inner.numisolines_l -anchor w -pady 2 \
1911	4,1 $inner.numisolines -anchor w -pady 2 \
1912	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
1913	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1914	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1915	8,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
1916	9,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1917	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
1918	11,0 $inner.separator -padx 2 -fill x -cspan 2 \
1919	12,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1920	13,0 $inner.opacity_l -anchor w -pady 2 \
1921	13,1 $inner.opacity -fill x -pady 2 \
1922	14,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
1923	14,1 $inner.scale -fill x -pady 2 -cspan 2 \
1924
1925	blt::table configure $inner r* c* -resize none
1926	blt::table configure $inner r15 c1 -resize expand
1927	}
1928
1929	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
1930
1931	set fg [option get $itk_component(hull) font Font]
1932	#set bfg [option get $itk_component(hull) boldFont Font]
1933
1934	set inner [$itk_component(main) insert end \
1935	-title "Axis Settings" \
1936	-icon [Rappture::icon axis1]]
1937	$inner configure -borderwidth 4
1938
1939	checkbutton $inner.visible \
1940	-text "Axes" \
1941	-variable [itcl::scope _settings(axisVisible)] \
1942	-command [itcl::code $this AdjustSetting axisVisible] \
1943	-font "Arial 9"
1944	checkbutton $inner.labels \
1945	-text "Axis Labels" \
1946	-variable [itcl::scope _settings(axisLabels)] \
1947	-command [itcl::code $this AdjustSetting axisLabels] \
1948	-font "Arial 9"
1949	label $inner.grid_l -text "Grid" -font "Arial 9"
1950	checkbutton $inner.xgrid \
1951	-text "X" \
1952	-variable [itcl::scope _settings(axisXGrid)] \
1953	-command [itcl::code $this AdjustSetting axisXGrid] \
1954	-font "Arial 9"
1955	checkbutton $inner.ygrid \
1956	-text "Y" \
1957	-variable [itcl::scope _settings(axisYGrid)] \
1958	-command [itcl::code $this AdjustSetting axisYGrid] \
1959	-font "Arial 9"
1960	checkbutton $inner.zgrid \
1961	-text "Z" \
1962	-variable [itcl::scope _settings(axisZGrid)] \
1963	-command [itcl::code $this AdjustSetting axisZGrid] \
1964	-font "Arial 9"
1965	checkbutton $inner.minorticks \
1966	-text "Minor Ticks" \
1967	-variable [itcl::scope _settings(axisMinorTicks)] \
1968	-command [itcl::code $this AdjustSetting axisMinorTicks] \
1969	-font "Arial 9"
1970
1971
1972	label $inner.mode_l -text "Mode" -font "Arial 9"
1973
1974	itk_component add axisflymode {
1975	Rappture::Combobox $inner.mode -width 10 -editable no
1976	}
1977	$inner.mode choices insert end \
1978	"static_triad" "static" \
1979	"closest_triad" "closest" \
1980	"furthest_triad" "furthest" \
1981	"outer_edges" "outer"
1982	$itk_component(axisflymode) value "static"
1983	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlymode]
1984
1985	blt::table $inner \
1986	0,0 $inner.visible -anchor w -cspan 4 \
1987	1,0 $inner.labels -anchor w -cspan 4 \
1988	2,0 $inner.minorticks -anchor w -cspan 4 \
1989	4,0 $inner.grid_l -anchor w \
1990	4,1 $inner.xgrid -anchor w \
1991	4,2 $inner.ygrid -anchor w \
1992	4,3 $inner.zgrid -anchor w \
1993	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1994	5,1 $inner.mode -fill x -cspan 3
1995
1996	blt::table configure $inner r* c* -resize none
1997	blt::table configure $inner r7 c6 -resize expand
1998	blt::table configure $inner r3 -height 0.125i
1999	}
2000
2001
2002	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2003	set inner [$itk_component(main) insert end \
2004	-title "Camera Settings" \
2005	-icon [Rappture::icon camera]]
2006	$inner configure -borderwidth 4
2007
2008	set labels { qx qy qz qw xpan ypan zoom }
2009	set row 0
2010	foreach tag $labels {
2011	label $inner.${tag}label -text $tag -font "Arial 9"
2012	entry $inner.${tag} -font "Arial 9" -bg white \
2013	-textvariable [itcl::scope _view($tag)]
2014	bind $inner.${tag} <KeyPress-Return> \
2015	[itcl::code $this camera set ${tag}]
2016	blt::table $inner \
2017	$row,0 $inner.${tag}label -anchor e -pady 2 \
2018	$row,1 $inner.${tag} -anchor w -pady 2
2019	blt::table configure $inner r$row -resize none
2020	incr row
2021	}
2022	checkbutton $inner.ortho \
2023	-text "Orthographic Projection" \
2024	-variable [itcl::scope _view(ortho)] \
2025	-command [itcl::code $this camera set ortho] \
2026	-font "Arial 9"
2027	blt::table $inner \
2028	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2029	blt::table configure $inner r$row -resize none
2030	incr row
2031
2032	blt::table configure $inner c0 c1 -resize none
2033	blt::table configure $inner c2 -resize expand
2034	blt::table configure $inner r$row -resize expand
2035	}
2036
2037	#
2038	# camera --
2039	#
2040	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2041	switch -- $option {
2042	"show" {
2043	puts [array get _view]
2044	}
2045	"set" {
2046	set who [lindex $args 0]
2047	set x $_view($who)
2048	set code [catch { string is double $x } result]
2049	if { $code != 0 \|\| !$result } {
2050	return
2051	}
2052	switch -- $who {
2053	"ortho" {
2054	if {$_view(ortho)} {
2055	SendCmd "camera mode ortho"
2056	} else {
2057	SendCmd "camera mode persp"
2058	}
2059	}
2060	"xpan" - "ypan" {
2061	PanCamera
2062	}
2063	"qx" - "qy" - "qz" - "qw" {
2064	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2065	$_arcball quaternion $q
2066	EventuallyRotate $q
2067	}
2068	"zoom" {
2069	SendCmd "camera zoom $_view(zoom)"
2070	}
2071	}
2072	}
2073	}
2074	}
2075
2076	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2077	set bytes ""
2078	foreach dataobj [get] {
2079	foreach comp [$dataobj components] {
2080	set tag $dataobj-$comp
2081	#set contents [ConvertToVtkData $dataobj $comp]
2082	set contents [$dataobj vtkdata $comp]
2083	append bytes "$contents\n\n"
2084	}
2085	}
2086	return [list .vtk $bytes]
2087	}
2088
2089	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2090	if { [image width $_image(download)] > 0 &&
2091	[image height $_image(download)] > 0 } {
2092	set bytes [$_image(download) data -format "jpeg -quality 100"]
2093	set bytes [Rappture::encoding::decode -as b64 $bytes]
2094	return [list .jpg $bytes]
2095	}
2096	return ""
2097	}
2098
2099	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2100	Rappture::Balloon $popup \
2101	-title "[Rappture::filexfer::label downloadWord] as..."
2102	set inner [$popup component inner]
2103	label $inner.summary -text "" -anchor w
2104	radiobutton $inner.vtk_button -text "VTK data file" \
2105	-variable [itcl::scope _downloadPopup(format)] \
2106	-font "Arial 9 " \
2107	-value vtk
2108	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2109	radiobutton $inner.image_button -text "Image File" \
2110	-variable [itcl::scope _downloadPopup(format)] \
2111	-font "Arial 9 " \
2112	-value image
2113	Rappture::Tooltip::for $inner.image_button \
2114	"Save as digital image."
2115
2116	button $inner.ok -text "Save" \
2117	-highlightthickness 0 -pady 2 -padx 3 \
2118	-command $command \
2119	-compound left \
2120	-image [Rappture::icon download]
2121
2122	button $inner.cancel -text "Cancel" \
2123	-highlightthickness 0 -pady 2 -padx 3 \
2124	-command [list $popup deactivate] \
2125	-compound left \
2126	-image [Rappture::icon cancel]
2127
2128	blt::table $inner \
2129	0,0 $inner.summary -cspan 2 \
2130	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2131	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2132	4,1 $inner.cancel -width .9i -fill y \
2133	4,0 $inner.ok -padx 2 -width .9i -fill y
2134	blt::table configure $inner r3 -height 4
2135	blt::table configure $inner r4 -pady 4
2136	raise $inner.image_button
2137	$inner.vtk_button invoke
2138	return $inner
2139	}
2140
2141	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2142	# Parse style string.
2143	set tag $dataobj-$comp
2144	array set style {
2145	-color BCGYR
2146	-edges 0
2147	-edgecolor black
2148	-linewidth 1.0
2149	-levels 10
2150	-visible 1
2151	}
2152	if { $_currentColormap == "" } {
2153	set stylelist [$dataobj style $comp]
2154	if { $stylelist != "" } {
2155	array set style $stylelist
2156	set stylelist [array get style]
2157	SetCurrentColormap $stylelist
2158	}
2159	$itk_component(colormap) value $style(-color)
2160	}
2161	set _settings(numIsolines) $style(-levels)
2162	set scale [GetHeightmapScale]
2163	SendCmd "heightmap add numcontours $_settings(numIsolines) $scale $tag"
2164	set _comp2scale($tag) $_settings(heightmapScale)
2165	SendCmd "heightmap edges $_settings(edges) $tag"
2166	SendCmd "heightmap wireframe $_settings(wireframe) $tag"
2167	SendCmd "heightmap colormap $_currentColormap $tag"
2168	set color [$itk_component(isolinecolor) value]
2169	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2170	SendCmd "heightmap lighting $_settings(isHeightmap) $tag"
2171	}
2172
2173	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2174	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2175	return 0
2176	}
2177	return 1
2178	}
2179
2180	# ----------------------------------------------------------------------
2181	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2182	#
2183	# Invoked automatically whenever the "legend" command comes in from
2184	# the rendering server. Indicates that binary image data with the
2185	# specified <size> will follow.
2186	# ----------------------------------------------------------------------
2187	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2188	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2189	set _title $title
2190	regsub {\(mag\)} $title "" _title
2191	if { [isconnected] } {
2192	set bytes [ReceiveBytes $size]
2193	if { ![info exists _image(legend)] } {
2194	set _image(legend) [image create photo]
2195	}
2196	$_image(legend) configure -data $bytes
2197	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2198	if { [catch {DrawLegend} errs] != 0 } {
2199	global errorInfo
2200	puts stderr "errs=$errs errorInfo=$errorInfo"
2201	}
2202	}
2203	}
2204
2205	#
2206	# DrawLegend --
2207	#
2208	# Draws the legend in the own canvas on the right side of the plot area.
2209	#
2210	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2211	set fname $_curFldName
2212	set c $itk_component(view)
2213	set w [winfo width $c]
2214	set h [winfo height $c]
2215	set font "Arial 8"
2216	set lineht [font metrics $font -linespace]
2217
2218	if { $fname == "component" } {
2219	set title ""
2220	} else {
2221	if { [info exists _fields($fname)] } {
2222	foreach { title units } $_fields($fname) break
2223	if { $units != "" } {
2224	set title [format "%s (%s)" $title $units]
2225	}
2226	} else {
2227	set title $fname
2228	}
2229	}
2230	set x [expr $w - 2]
2231	if { !$_settings(legendVisible) } {
2232	$c delete legend
2233	return
2234	}
2235	if { [$c find withtag "legend"] == "" } {
2236	set y 2
2237	# If there's a legend title, create a text item for the title.
2238	$c create text $x $y \
2239	-anchor ne \
2240	-fill $itk_option(-plotforeground) -tags "title legend" \
2241	-font $font
2242	incr y $lineht
2243	$c create text $x $y \
2244	-anchor ne \
2245	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2246	-font $font
2247	incr y $lineht
2248	$c create image $x $y \
2249	-anchor ne \
2250	-image $_image(legend) -tags "colormap legend"
2251	$c create rectangle $x $y 1 1 \
2252	-fill "" -outline "" -tags "sensor legend"
2253	$c create text $x [expr {$h-2}] \
2254	-anchor se \
2255	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2256	-font $font
2257	$c bind sensor <B1-Enter> [itcl::code $this EnterLegend %x %y]
2258	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2259	$c bind sensor <B1-Motion> [itcl::code $this MotionLegend %x %y]
2260	}
2261	$c delete isoline
2262	set x2 $x
2263	set iw [image width $_image(legend)]
2264	set ih [image height $_image(legend)]
2265	set x1 [expr $x2 - ($iw*12)/10]
2266	set color [$itk_component(isolinecolor) value]
2267
2268	# Draw the isolines on the legend.
2269	if { $color != "none" && [info exists _limits($_curFldName)] &&
2270	$_settings(isolinesVisible) && $_settings(numIsolines) > 0 } {
2271	set pixels [blt::vector create \#auto]
2272	set values [blt::vector create \#auto]
2273	set range [image height $_image(legend)]
2274	# Order of pixels is max to min (max is at top of legend).
2275	$pixels seq $ih 0 $_settings(numIsolines)
2276
2277	set offset [expr 2 + $lineht]
2278	# If there's a legend title, increase the offset by the line height.
2279	if { $title != "" } {
2280	incr offset $lineht
2281	}
2282	$pixels expr {round($pixels + $offset)}
2283	# Order of values is min to max.
2284	foreach { vmin vmax } $_limits($_curFldName) break
2285	$values seq $vmin $vmax $_settings(numIsolines)
2286	set tags "isoline legend"
2287	array unset _isolines
2288	foreach pos [$pixels range 0 end] value [$values range end 0] {
2289	set y1 [expr int($pos)]
2290	for { set off 0 } { $off < 3 } { incr off } {
2291	set _isolines([expr $y1 + $off]) $value
2292	set _isolines([expr $y1 - $off]) $value
2293	}
2294	set id [$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags]
2295	#$c bind $id <B1-Enter> [itcl::code $this EnterIsoline %x %y $value]
2296	#$c bind $id <Leave> [itcl::code $this LeaveIsoline]
2297	}
2298	blt::vector destroy $pixels $values
2299	}
2300
2301	$c bind title <ButtonPress> [itcl::code $this Combo post]
2302	$c bind title <Enter> [itcl::code $this Combo activate]
2303	$c bind title <Leave> [itcl::code $this Combo deactivate]
2304	# Reset the item coordinates according the current size of the plot.
2305	if { [info exists _limits($_curFldName)] } {
2306	foreach { vmin vmax } $_limits($_curFldName) break
2307	$c itemconfigure vmin -text [format %g $vmin]
2308	$c itemconfigure vmax -text [format %g $vmax]
2309	}
2310	set y 2
2311	# If there's a legend title, move the title to the correct position
2312	if { $title != "" } {
2313	$c itemconfigure title -text $title
2314	$c coords title $x $y
2315	incr y $lineht
2316	}
2317	$c coords vmax $x $y
2318	incr y $lineht
2319	$c coords colormap $x $y
2320	set ix [image width $_image(legend)]
2321	set ih [image height $_image(legend)]
2322	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2323	$c raise sensor
2324	$c coords vmin $x [expr {$h - 2}]
2325	}
2326
2327	#
2328	# EnterIsoline --
2329	#
2330	itcl::body Rappture::VtkHeightmapViewer::EnterIsoline { x y value } {
2331	SetIsolineTip $x $y $value
2332	}
2333
2334	#
2335	# LeaveIsoline --
2336	#
2337	itcl::body Rappture::VtkHeightmapViewer::LeaveIsoline { } {
2338	Rappture::Tooltip::tooltip cancel
2339	.rappturetooltip configure -icon ""
2340	}
2341
2342	#
2343	# SetIsolineTip --
2344	#
2345	itcl::body Rappture::VtkHeightmapViewer::SetIsolineTip { x y value } {
2346	set c $itk_component(view)
2347	.rappturetooltip configure -icon ""
2348
2349	# Compute the position of the tip
2350	set tx [expr $x + 15]
2351	set ty [expr $y - 5]
2352	Rappture::Tooltip::text $c "Isoline $value"
2353	Rappture::Tooltip::tooltip show $c +$tx,+$ty
2354	}
2355
2356
2357	#
2358	# EnterLegend --
2359	#
2360	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2361	SetLegendTip $x $y
2362	}
2363
2364	#
2365	# MotionLegend --
2366	#
2367	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2368	Rappture::Tooltip::tooltip cancel
2369	set c $itk_component(view)
2370	set cw [winfo width $c]
2371	set ch [winfo height $c]
2372	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2373	SetLegendTip $x $y
2374	}
2375	}
2376
2377	#
2378	# LeaveLegend --
2379	#
2380	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2381	Rappture::Tooltip::tooltip cancel
2382	.rappturetooltip configure -icon ""
2383	}
2384
2385	#
2386	# SetLegendTip --
2387	#
2388	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2389	set c $itk_component(view)
2390	set w [winfo width $c]
2391	set h [winfo height $c]
2392	set font "Arial 8"
2393	set lineht [font metrics $font -linespace]
2394
2395	set ih [image height $_image(legend)]
2396	set iy [expr $y - ($lineht + 2)]
2397
2398	if { [info exists _fields($_title)] } {
2399	foreach { title units } $_fields($_title) break
2400	if { $units != "" } {
2401	set title [format "%s (%s)" $title $units]
2402	}
2403	} else {
2404	set title $_title
2405	}
2406	# If there's a legend title, increase the offset by the line height.
2407	if { $title != "" } {
2408	incr iy -$lineht
2409	}
2410
2411	# Make a swatch of the selected color
2412	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2413	return
2414	}
2415
2416	if { ![info exists _image(swatch)] } {
2417	set _image(swatch) [image create photo -width 24 -height 24]
2418	}
2419	set color [eval format "\#%02x%02x%02x" $pixel]
2420	$_image(swatch) put black -to 0 0 23 23
2421	$_image(swatch) put $color -to 1 1 22 22
2422
2423	# Compute the value of the point
2424	if { [info exists _limits($_curFldName)] } {
2425	foreach { vmin vmax } $_limits($_curFldName) break
2426	set t [expr 1.0 - (double($iy) / double($ih-1))]
2427	set value [expr $t * ($vmax - $vmin) + $vmin]
2428	} else {
2429	set value 0.0
2430	}
2431	set tipx [expr $x + 15]
2432	set tipy [expr $y - 5]
2433	.rappturetooltip configure -icon $_image(swatch)
2434	if { [info exists _isolines($iy)] } {
2435	Rappture::Tooltip::text $c [format "$title (isoline) %g" $_isolines($iy)]
2436	} else {
2437	Rappture::Tooltip::text $c [format "$title %g" $value]
2438	}
2439	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2440	}
2441
2442	# ----------------------------------------------------------------------
2443	# USAGE: _dropdown post
2444	# USAGE: _dropdown unpost
2445	# USAGE: _dropdown select
2446	#
2447	# Used internally to handle the dropdown list for this combobox. The
2448	# post/unpost options are invoked when the list is posted or unposted
2449	# to manage the relief of the controlling button. The select option
2450	# is invoked whenever there is a selection from the list, to assign
2451	# the value back to the gauge.
2452	# ----------------------------------------------------------------------
2453	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2454	set c $itk_component(view)
2455	switch -- $option {
2456	post {
2457	foreach { x1 y1 x2 y2 } [$c bbox title] break
2458	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2459	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2460	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2461	tk_popup $itk_component(fieldmenu) $x $y
2462	}
2463	activate {
2464	$c itemconfigure title -fill red
2465	}
2466	deactivate {
2467	$c itemconfigure title -fill $itk_option(-plotforeground)
2468	}
2469	invoke {
2470	$itk_component(field) value $_curFldLabel
2471	AdjustSetting field
2472	}
2473	default {
2474	error "bad option \"$option\": should be post, unpost, select"
2475	}
2476	}
2477	}
2478
2479	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2480	if { $_settings(isHeightmap) } {
2481	set val $_settings(heightmapScale)
2482	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2483	return $sval
2484	}
2485	set sval 0
2486	}
2487
2488	itcl::body Rappture::VtkHeightmapViewer::ResetColormap { color } {
2489	array set style {
2490	-color BCGYR
2491	-levels 10
2492	-opacity 1.0
2493	}
2494	if { [info exists _colormap($_currentColormap)] } {
2495	array set style $_colormap($_currentColormap)
2496	}
2497	set style(-color) $color
2498	SetCurrentColormap [array get style]
2499	}
2500

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