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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 3462

Last change on this file since 3462 was 3462, checked in by ldelgass, 11 years ago
Add support for discrete (step function) colormaps in heightmap viewer.
File size: 83.2 KB

Line
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 }
87	private method BuildContourTab {}
88	private method BuildDownloadPopup { widget command }
89	private method Combo { option }
90	private method ConvertToVtkData { dataobj comp }
91	private method DrawLegend {}
92	private method EnterLegend { x y }
93	private method EventuallyRequestLegend {}
94	private method EventuallyResize { w h }
95	private method EventuallyRotate { q }
96	private method GetImage { args }
97	private method GetVtkData { args }
98	private method IsValidObject { dataobj }
99	private method LeaveLegend {}
100	private method MotionLegend { x y }
101	private method PanCamera {}
102	private method RequestLegend {}
103	private method SetCurrentColormap { color }
104	private method SetLegendTip { x y }
105	private method SetObjectStyle { dataobj comp }
106	private method GetHeightmapScale {}
107	private method ResetAxes {}
108
109	private variable _arcball ""
110	private variable _dlist "" ; # list of data objects
111	private variable _obj2datasets
112	private variable _obj2ovride ; # maps dataobj => style override
113	private variable _comp2scale; # maps dataset to the heightmap scale.
114	private variable _datasets ; # contains all the dataobj-component
115	; # datasets in the server
116	private variable _colormaps ; # contains all the colormaps
117	; # in the server.
118
119	# The name of the current colormap used. The colormap is global to all
120	# heightmaps displayed.
121	private variable _currentColormap "" ;
122	private variable _currentNumIsolines "" ;
123	private variable _currentOpacity "" ;
124
125	private variable _click ; # info used for rotate operations
126	private variable _limits ; # Holds overall limits for all dataobjs
127	# using the viewer.
128	private variable _view ; # view params for 3D view
129	private variable _settings
130	private variable _changed
131	private variable _initialStyle ""; # First found style in dataobjects.
132	private variable _reset 1; # Indicates if camera needs to be reset
133	# to starting position.
134	private variable _beforeConnect 1; # Indicates if camera needs to be reset
135	# to starting position.
136
137	private variable _first "" ; # This is the topmost dataset.
138	private variable _start 0
139	private variable _isolines
140
141	common _downloadPopup; # download options from popup
142	private common _hardcopy
143	private variable _width 0
144	private variable _height 0
145	private variable _legendWidth 0
146	private variable _legendHeight 0
147	private variable _resizePending 0
148	private variable _rotatePending 0
149	private variable _legendPending 0
150	private variable _fieldNames {}
151	private variable _fields
152	private variable _curFldName ""
153	private variable _curFldLabel ""
154	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
155	}
156
157	itk::usual VtkHeightmapViewer {
158	keep -background -foreground -cursor -font
159	keep -plotbackground -plotforeground -mode
160	}
161
162	# ----------------------------------------------------------------------
163	# CONSTRUCTOR
164	# ----------------------------------------------------------------------
165	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
166	set _serverType "vtkvis"
167
168	EnableWaitDialog 1000
169	# Rebuild event
170	$_dispatcher register !rebuild
171	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
172
173	# Resize event
174	$_dispatcher register !resize
175	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
176
177	# Rotate event
178	$_dispatcher register !rotate
179	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
180
181	# Legend event
182	$_dispatcher register !legend
183	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
184
185	#
186	# Populate parser with commands handle incoming requests
187	#
188	$_parser alias image [itcl::code $this ReceiveImage]
189	$_parser alias dataset [itcl::code $this ReceiveDataset]
190	$_parser alias legend [itcl::code $this ReceiveLegend]
191
192	# Initialize the view to some default parameters.
193	array set _view {
194	qw 0.36
195	qx 0.25
196	qy 0.50
197	qz 0.70
198	zoom 1.0
199	xpan 0
200	ypan 0
201	ortho 1
202	}
203	set _arcball [blt::arcball create 100 100]
204	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
205	$_arcball quaternion $q
206
207	array set _settings {
208	axisFlymode "static"
209	axisMinorTicks 1
210	stretchToFit 0
211	axisLabels 1
212	axisVisible 1
213	axisXGrid 0
214	axisYGrid 0
215	axisZGrid 0
216	colormapVisible 1
217	colormapDiscrete 0
218	edges 0
219	field "Default"
220	heightmapScale 50
221	isHeightmap 0
222	isolineColor black
223	isolinesVisible 1
224	legendVisible 1
225	lighting 1
226	saveLighting 1
227	numIsolines 10
228	opacity 100
229	outline 0
230	wireframe 0
231	saveOpacity 100
232	}
233	array set _changed {
234	opacity 0
235	colormap 0
236	numIsolines 0
237	}
238	itk_component add view {
239	canvas $itk_component(plotarea).view \
240	-highlightthickness 0 -borderwidth 0
241	} {
242	usual
243	ignore -highlightthickness -borderwidth -background
244	}
245
246	itk_component add fieldmenu {
247	menu $itk_component(plotarea).menu \
248	-relief flat \
249	-tearoff no
250	} {
251	usual
252	ignore -background -foreground -relief -tearoff
253	}
254	set c $itk_component(view)
255	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
256	bind $c <4> [itcl::code $this Zoom in 0.25]
257	bind $c <5> [itcl::code $this Zoom out 0.25]
258	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
259	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
260	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
261	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
262	bind $c <Enter> "focus %W"
263	bind $c <Control-F1> [itcl::code $this ToggleConsole]
264
265	# Fix the scrollregion in case we go off screen
266	$c configure -scrollregion [$c bbox all]
267
268	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
269	set _map(cwidth) -1
270	set _map(cheight) -1
271	set _map(zoom) 1.0
272	set _map(original) ""
273
274	set f [$itk_component(main) component controls]
275	itk_component add reset {
276	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
277	-highlightthickness 0 \
278	-image [Rappture::icon reset-view] \
279	-command [itcl::code $this Zoom reset]
280	} {
281	usual
282	ignore -highlightthickness
283	}
284	pack $itk_component(reset) -side top -padx 2 -pady 2
285	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
286
287	itk_component add zoomin {
288	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
289	-highlightthickness 0 \
290	-image [Rappture::icon zoom-in] \
291	-command [itcl::code $this Zoom in]
292	} {
293	usual
294	ignore -highlightthickness
295	}
296	pack $itk_component(zoomin) -side top -padx 2 -pady 2
297	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
298
299	itk_component add zoomout {
300	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
301	-highlightthickness 0 \
302	-image [Rappture::icon zoom-out] \
303	-command [itcl::code $this Zoom out]
304	} {
305	usual
306	ignore -highlightthickness
307	}
308	pack $itk_component(zoomout) -side top -padx 2 -pady 2
309	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
310
311	itk_component add mode {
312	Rappture::PushButton $f.mode \
313	-onimage [Rappture::icon surface] \
314	-offimage [Rappture::icon surface] \
315	-variable [itcl::scope _settings(isHeightmap)] \
316	-command [itcl::code $this AdjustSetting isHeightmap] \
317	}
318	Rappture::Tooltip::for $itk_component(mode) \
319	"Toggle the surface/contour on/off"
320	pack $itk_component(mode) -padx 2 -pady 2
321
322	if { [catch {
323	BuildContourTab
324	BuildAxisTab
325	BuildCameraTab
326	} errs] != 0 } {
327	global errorInfo
328	puts stderr "errs=$errs errorInfo=$errorInfo"
329	}
330	set _image(legend) [image create photo]
331
332	# Hack around the Tk panewindow. The problem is that the requested
333	# size of the 3d view isn't set until an image is retrieved from
334	# the server. So the panewindow uses the tiny size.
335	set w 10000
336	pack forget $itk_component(view)
337	blt::table $itk_component(plotarea) \
338	0,0 $itk_component(view) -fill both -reqwidth $w
339	blt::table configure $itk_component(plotarea) c1 -resize none
340
341	# Bindings for panning via mouse
342	bind $itk_component(view) <ButtonPress-2> \
343	[itcl::code $this Pan click %x %y]
344	bind $itk_component(view) <B2-Motion> \
345	[itcl::code $this Pan drag %x %y]
346	bind $itk_component(view) <ButtonRelease-2> \
347	[itcl::code $this Pan release %x %y]
348
349	#bind $itk_component(view) <ButtonRelease-3> \
350	# [itcl::code $this Pick %x %y]
351
352	# Bindings for panning via keyboard
353	bind $itk_component(view) <KeyPress-Left> \
354	[itcl::code $this Pan set -10 0]
355	bind $itk_component(view) <KeyPress-Right> \
356	[itcl::code $this Pan set 10 0]
357	bind $itk_component(view) <KeyPress-Up> \
358	[itcl::code $this Pan set 0 -10]
359	bind $itk_component(view) <KeyPress-Down> \
360	[itcl::code $this Pan set 0 10]
361	bind $itk_component(view) <Shift-KeyPress-Left> \
362	[itcl::code $this Pan set -2 0]
363	bind $itk_component(view) <Shift-KeyPress-Right> \
364	[itcl::code $this Pan set 2 0]
365	bind $itk_component(view) <Shift-KeyPress-Up> \
366	[itcl::code $this Pan set 0 -2]
367	bind $itk_component(view) <Shift-KeyPress-Down> \
368	[itcl::code $this Pan set 0 2]
369
370	# Bindings for zoom via keyboard
371	bind $itk_component(view) <KeyPress-Prior> \
372	[itcl::code $this Zoom out]
373	bind $itk_component(view) <KeyPress-Next> \
374	[itcl::code $this Zoom in]
375
376	bind $itk_component(view) <Enter> "focus $itk_component(view)"
377
378	if {[string equal "x11" [tk windowingsystem]]} {
379	# Bindings for zoom via mouse
380	bind $itk_component(view) <4> [itcl::code $this Zoom out]
381	bind $itk_component(view) <5> [itcl::code $this Zoom in]
382	}
383
384	set _image(download) [image create photo]
385
386	eval itk_initialize $args
387	Connect
388	set _beforeConnect 0
389	}
390
391	# ----------------------------------------------------------------------
392	# DESTRUCTOR
393	# ----------------------------------------------------------------------
394	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
395	Disconnect
396	image delete $_image(plot)
397	image delete $_image(download)
398	catch { blt::arcball destroy $_arcball }
399	}
400
401	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
402	if { $_width < 2 } {
403	set _width 500
404	}
405	if { $_height < 2 } {
406	set _height 500
407	}
408	set _start [clock clicks -milliseconds]
409	SendCmd "screen size [expr $_width - 20] $_height"
410
411	set font "Arial 8"
412	set lh [font metrics $font -linespace]
413	set h [expr {$_height - 2 * ($lh + 2)}]
414	if { $h != $_legendHeight } {
415	EventuallyRequestLegend
416	} else {
417	DrawLegend
418	}
419	set _resizePending 0
420	}
421
422	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
423	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
424	SendCmd "camera orient $q"
425	set _rotatePending 0
426	}
427
428	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
429	if { !$_legendPending } {
430	set _legendPending 1
431	$_dispatcher event -idle !legend
432	}
433	}
434
435	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
436	set _width $w
437	set _height $h
438	$_arcball resize $w $h
439	if { !$_resizePending } {
440	set _resizePending 1
441	$_dispatcher event -after 250 !resize
442	}
443	}
444
445	set rotate_delay 100
446
447	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
448	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
449	if { !$_rotatePending } {
450	set _rotatePending 1
451	global rotate_delay
452	$_dispatcher event -after $rotate_delay !rotate
453	}
454	}
455
456	# ----------------------------------------------------------------------
457	# USAGE: add <dataobj> ?<settings>?
458	#
459	# Clients use this to add a data object to the plot. The optional
460	# <settings> are used to configure the plot. Allowed settings are
461	# -color, -brightness, -width, -linestyle, and -raise.
462	# ----------------------------------------------------------------------
463	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
464	array set params {
465	-color auto
466	-width 1
467	-linestyle solid
468	-brightness 0
469	-raise 0
470	-description ""
471	-param ""
472	-type ""
473	}
474	array set params $settings
475	set params(-description) ""
476	set params(-param) ""
477	foreach {opt val} $settings {
478	if {![info exists params($opt)]} {
479	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
480	}
481	set params($opt) $val
482	}
483	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
484	# can't handle -autocolors yet
485	set params(-color) white
486	}
487	set pos [lsearch -exact $dataobj $_dlist]
488	if {$pos < 0} {
489	lappend _dlist $dataobj
490	}
491	set _obj2ovride($dataobj-color) $params(-color)
492	set _obj2ovride($dataobj-width) $params(-width)
493	set _obj2ovride($dataobj-raise) $params(-raise)
494	$_dispatcher event -idle !rebuild
495	}
496
497
498	# ----------------------------------------------------------------------
499	# USAGE: delete ?<dataobj1> <dataobj2> ...?
500	#
501	# Clients use this to delete a dataobj from the plot. If no dataobjs
502	# are specified, then all dataobjs are deleted. No data objects are
503	# deleted. They are only removed from the display list.
504	#
505	# ----------------------------------------------------------------------
506	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
507	if { [llength $args] == 0} {
508	set args $_dlist
509	}
510	# Delete all specified dataobjs
511	set changed 0
512	foreach dataobj $args {
513	set pos [lsearch -exact $_dlist $dataobj]
514	if { $pos < 0 } {
515	continue; # Don't know anything about it.
516	}
517	# Remove it from the dataobj list.
518	set _dlist [lreplace $_dlist $pos $pos]
519	array unset _obj2ovride $dataobj-*
520	array unset _settings $dataobj-*
521	# Append to the end of the dataobj list.
522	#lappend _dlist $dataobj
523	set changed 1
524	}
525	# If anything changed, then rebuild the plot
526	if { $changed } {
527	$_dispatcher event -idle !rebuild
528	}
529	}
530
531	# ----------------------------------------------------------------------
532	# USAGE: get ?-objects?
533	# USAGE: get ?-visible?
534	# USAGE: get ?-image view?
535	#
536	# Clients use this to query the list of objects being plotted, in
537	# order from bottom to top of this result. The optional "-image"
538	# flag can also request the internal images being shown.
539	# ----------------------------------------------------------------------
540	itcl::body Rappture::VtkHeightmapViewer::get {args} {
541	if {[llength $args] == 0} {
542	set args "-objects"
543	}
544
545	set op [lindex $args 0]
546	switch -- $op {
547	"-objects" {
548	# put the dataobj list in order according to -raise options
549	set dlist {}
550	foreach dataobj $_dlist {
551	if { ![IsValidObject $dataobj] } {
552	continue
553	}
554	if {[info exists _obj2ovride($dataobj-raise)] &&
555	$_obj2ovride($dataobj-raise)} {
556	set dlist [linsert $dlist 0 $dataobj]
557	} else {
558	lappend dlist $dataobj
559	}
560	}
561	return $dlist
562	}
563	"-visible" {
564	set dlist {}
565	foreach dataobj $_dlist {
566	if { ![IsValidObject $dataobj] } {
567	continue
568	}
569	if { ![info exists _obj2ovride($dataobj-raise)] } {
570	# No setting indicates that the object isn't visible.
571	continue
572	}
573	# Otherwise use the -raise parameter to put the object to
574	# the front of the list.
575	if { $_obj2ovride($dataobj-raise) } {
576	set dlist [linsert $dlist 0 $dataobj]
577	} else {
578	lappend dlist $dataobj
579	}
580	}
581	return $dlist
582	}
583	-image {
584	if {[llength $args] != 2} {
585	error "wrong # args: should be \"get -image view\""
586	}
587	switch -- [lindex $args end] {
588	view {
589	return $_image(plot)
590	}
591	default {
592	error "bad image name \"[lindex $args end]\": should be view"
593	}
594	}
595	}
596	default {
597	error "bad option \"$op\": should be -objects or -image"
598	}
599	}
600	}
601
602	#
603	# scale --
604	#
605	# This gets called either incrementally as new simulations are
606	# added or all at once as a sequence of heightmaps.
607	# This accounts for all objects--even those not showing on the
608	# screen. Because of this, the limits are appropriate for all
609	# objects as the user scans through data in the ResultSet viewer.
610	#
611	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
612	foreach dataobj $args {
613	foreach axis { x y } {
614	set lim [$dataobj limits $axis]
615	if { ![info exists _limits($axis)] } {
616	set _limits($axis) $lim
617	continue
618	}
619	foreach {min max} $lim break
620	foreach {amin amax} $_limits($axis) break
621	if { $amin > $min } {
622	set amin $min
623	}
624	if { $amax < $max } {
625	set amax $max
626	}
627	set _limits($axis) [list $amin $amax]
628	}
629	foreach { fname lim } [$dataobj fieldlimits] {
630	if { ![info exists _limits($fname)] } {
631	set _limits($fname) $lim
632	continue
633	}
634	foreach {min max} $lim break
635	foreach {fmin fmax} $_limits($fname) break
636	if { $fmin > $min } {
637	set fmin $min
638	}
639	if { $fmax < $max } {
640	set fmax $max
641	}
642	set _limits($fname) [list $fmin $fmax]
643	}
644	}
645	}
646
647	# ----------------------------------------------------------------------
648	# USAGE: download coming
649	# USAGE: download controls <downloadCommand>
650	# USAGE: download now
651	#
652	# Clients use this method to create a downloadable representation
653	# of the plot. Returns a list of the form {ext string}, where
654	# "ext" is the file extension (indicating the type of data) and
655	# "string" is the data itself.
656	# ----------------------------------------------------------------------
657	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
658	switch $option {
659	coming {
660	if {[catch {
661	blt::winop snap $itk_component(plotarea) $_image(download)
662	}]} {
663	$_image(download) configure -width 1 -height 1
664	$_image(download) put #000000
665	}
666	}
667	controls {
668	set popup .vtkviewerdownload
669	if { ![winfo exists .vtkviewerdownload] } {
670	set inner [BuildDownloadPopup $popup [lindex $args 0]]
671	} else {
672	set inner [$popup component inner]
673	}
674	set _downloadPopup(image_controls) $inner.image_frame
675	set num [llength [get]]
676	set num [expr {($num == 1) ? "1 result" : "$num results"}]
677	set word [Rappture::filexfer::label downloadWord]
678	$inner.summary configure -text "$word $num in the following format:"
679	update idletasks ;# Fix initial sizes
680	return $popup
681	}
682	now {
683	set popup .vtkviewerdownload
684	if {[winfo exists .vtkviewerdownload]} {
685	$popup deactivate
686	}
687	switch -- $_downloadPopup(format) {
688	"image" {
689	return [$this GetImage [lindex $args 0]]
690	}
691	"vtk" {
692	return [$this GetVtkData [lindex $args 0]]
693	}
694	}
695	return ""
696	}
697	default {
698	error "bad option \"$option\": should be coming, controls, now"
699	}
700	}
701	}
702
703	# ----------------------------------------------------------------------
704	# USAGE: Connect ?<host:port>,<host:port>...?
705	#
706	# Clients use this method to establish a connection to a new
707	# server, or to reestablish a connection to the previous server.
708	# Any existing connection is automatically closed.
709	# ----------------------------------------------------------------------
710	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
711	global readyForNextFrame
712	set readyForNextFrame 1
713	set _reset 1
714	set _hosts [GetServerList "vtkvis"]
715	if { "" == $_hosts } {
716	return 0
717	}
718	set result [VisViewer::Connect $_hosts]
719	if { $result } {
720	set w [winfo width $itk_component(view)]
721	set h [winfo height $itk_component(view)]
722	EventuallyResize $w $h
723	}
724	return $result
725	}
726
727	#
728	# isconnected --
729	#
730	# Indicates if we are currently connected to the visualization server.
731	#
732	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
733	return [VisViewer::IsConnected]
734	}
735
736	#
737	# disconnect --
738	#
739	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
740	Disconnect
741	set _reset 1
742	}
743
744	#
745	# Disconnect --
746	#
747	# Clients use this method to disconnect from the current rendering
748	# server.
749	#
750	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
751	VisViewer::Disconnect
752
753	$_dispatcher cancel !rebuild
754	$_dispatcher cancel !resize
755	$_dispatcher cancel !rotate
756	$_dispatcher cancel !legend
757	# disconnected -- no more data sitting on server
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	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
768	#
769	# Invoked automatically whenever the "image" command comes in from
770	# the rendering server. Indicates that binary image data with the
771	# specified <size> will follow.
772	# ----------------------------------------------------------------------
773	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
774	global readyForNextFrame
775	set readyForNextFrame 1
776	array set info {
777	-token "???"
778	-bytes 0
779	-type image
780	}
781	array set info $args
782	set bytes [ReceiveBytes $info(-bytes)]
783	if { $info(-type) == "image" } {
784	if 0 {
785	set f [open "last.ppm" "w"]
786	puts $f $bytes
787	close $f
788	}
789	$_image(plot) configure -data $bytes
790	set time [clock seconds]
791	set date [clock format $time]
792	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
793	if { $_start > 0 } {
794	set finish [clock clicks -milliseconds]
795	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
796	set _start 0
797	}
798	} elseif { $info(type) == "print" } {
799	set tag $this-print-$info(-token)
800	set _hardcopy($tag) $bytes
801	}
802	}
803
804	#
805	# ReceiveDataset --
806	#
807	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
808	if { ![isconnected] } {
809	return
810	}
811	set option [lindex $args 0]
812	switch -- $option {
813	"scalar" {
814	set option [lindex $args 1]
815	switch -- $option {
816	"world" {
817	foreach { x y z value tag } [lrange $args 2 end] break
818	}
819	"pixel" {
820	foreach { x y value tag } [lrange $args 2 end] break
821	}
822	}
823	}
824	"vector" {
825	set option [lindex $args 1]
826	switch -- $option {
827	"world" {
828	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
829	}
830	"pixel" {
831	foreach { x y vx vy vz tag } [lrange $args 2 end] break
832	}
833	}
834	}
835	"names" {
836	foreach { name } [lindex $args 1] {
837	#puts stderr "Dataset: $name"
838	}
839	}
840	default {
841	error "unknown dataset option \"$option\" from server"
842	}
843	}
844	}
845
846	# ----------------------------------------------------------------------
847	# USAGE: Rebuild
848	#
849	# Called automatically whenever something changes that affects the
850	# data in the widget. Clears any existing data and rebuilds the
851	# widget to display new data.
852	# ----------------------------------------------------------------------
853	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
854	set w [winfo width $itk_component(view)]
855	set h [winfo height $itk_component(view)]
856	if { $w < 2 \|\| $h < 2 } {
857	$_dispatcher event -idle !rebuild
858	return
859	}
860
861	StartBufferingCommands
862	# Turn on buffering of commands to the server. We don't want to
863	# be preempted by a server disconnect/reconnect (which automatically
864	# generates a new call to Rebuild).
865	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
866	set _width $w
867	set _height $h
868	$_arcball resize $w $h
869	DoResize
870	if { $_settings(stretchToFit) } {
871	AdjustSetting stretchToFit
872	}
873	}
874	if { $_reset } {
875	if { $_reportClientInfo } {
876	# Tell the server the name of the tool, the version, and dataset
877	# that we are rendering. Have to do it here because we don't know
878	# what data objects are using the renderer until be get here.
879	global env
880
881	set info {}
882	set user "???"
883	if { [info exists env(USER)] } {
884	set user $env(USER)
885	}
886	set session "???"
887	if { [info exists env(SESSION)] } {
888	set session $env(SESSION)
889	}
890	lappend info "hub" [exec hostname]
891	lappend info "client" "vtkheightmapviewer"
892	lappend info "user" $user
893	lappend info "session" $session
894	SendCmd "clientinfo [list $info]"
895	}
896	InitSettings isHeightmap background
897	#
898	# Reset the camera and other view parameters
899	#
900	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
901	SendCmd "axis lrot z 90"
902	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
903	$_arcball quaternion $q
904	if {$_settings(isHeightmap) } {
905	if { $_view(ortho)} {
906	SendCmd "camera mode ortho"
907	} else {
908	SendCmd "camera mode persp"
909	}
910	SendCmd "camera reset"
911	DoRotate
912	}
913	PanCamera
914	SendCmd "imgflush"
915	}
916
917	set _first ""
918	# Start off with no datasets are visible.
919	SendCmd "dataset visible 0"
920	set scale [GetHeightmapScale]
921	foreach dataobj [get -objects] {
922	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
923	set _first $dataobj
924	}
925	set _obj2datasets($dataobj) ""
926	foreach comp [$dataobj components] {
927	set tag $dataobj-$comp
928	if { ![info exists _datasets($tag)] } {
929	set bytes [$dataobj vtkdata $comp]
930	if 0 {
931	set f [open /tmp/vtkheightmap.vtk "w"]
932	puts $f $bytes
933	close $f
934	}
935	set length [string length $bytes]
936	if { $_reportClientInfo } {
937	set info {}
938	lappend info "tool_id" [$dataobj hints toolId]
939	lappend info "tool_name" [$dataobj hints toolName]
940	lappend info "tool_version" [$dataobj hints toolRevision]
941	lappend info "tool_title" [$dataobj hints toolTitle]
942	lappend info "dataset_label" [$dataobj hints label]
943	lappend info "dataset_size" $length
944	lappend info "dataset_tag" $tag
945	SendCmd [list "clientinfo" $info]
946	}
947	SendCmd "dataset add $tag data follows $length"
948	append _outbuf $bytes
949	set _datasets($tag) 1
950	SetObjectStyle $dataobj $comp
951	}
952	lappend _obj2datasets($dataobj) $tag
953	if { [info exists _obj2ovride($dataobj-raise)] } {
954	# Setting dataset visible enables outline (if enabled)
955	# and heightmap
956	SendCmd "dataset visible 1 $tag"
957	}
958	if { ![info exists _comp2scale($tag)] \|\|
959	$_comp2scale($tag) != $scale } {
960	SendCmd "heightmap heightscale $scale $tag"
961	set _comp2scale($tag) $scale
962	}
963	}
964	}
965	if { $_first != "" } {
966	$itk_component(field) choices delete 0 end
967	$itk_component(fieldmenu) delete 0 end
968	array unset _fields
969	set _curFldName ""
970	foreach cname [$_first components] {
971	foreach fname [$_first fieldnames $cname] {
972	if { [info exists _fields($fname)] } {
973	continue
974	}
975	foreach { label units components } \
976	[$_first fieldinfo $fname] break
977	$itk_component(field) choices insert end "$fname" "$label"
978	$itk_component(fieldmenu) add radiobutton -label "$label" \
979	-value $label -variable [itcl::scope _curFldLabel] \
980	-selectcolor red \
981	-activebackground $itk_option(-plotbackground) \
982	-activeforeground $itk_option(-plotforeground) \
983	-font "Arial 8" \
984	-command [itcl::code $this Combo invoke]
985	set _fields($fname) [list $label $units $components]
986	if { $_curFldName == "" } {
987	set _curFldName $fname
988	set _curFldLabel $label
989	}
990	}
991	}
992	$itk_component(field) value $_curFldLabel
993	}
994	InitSettings stretchToFit
995
996	if { $_reset } {
997	SendCmd "axis tickpos outside"
998	foreach axis { x y z } {
999	SendCmd "axis lformat $axis %g"
1000	}
1001
1002	foreach axis { x y z } {
1003	set label [$_first hints ${axis}label]
1004	if { $label == "" } {
1005	if {$axis == "z"} {
1006	if { [string match "component*" $_curFldName] } {
1007	set label [string toupper $axis]
1008	} else {
1009	set label $_curFldLabel
1010	}
1011	} else {
1012	set label [string toupper $axis]
1013	}
1014	}
1015	# May be a space in the axis label.
1016	SendCmd [list axis name $axis $label]
1017
1018	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1019	set units [lindex $_fields($_curFldName) 1]
1020	} else {
1021	set units [$_first hints ${axis}units]
1022	}
1023	if { $units != "" } {
1024	# May be a space in the axis units.
1025	SendCmd [list axis units $axis $units]
1026	}
1027	}
1028	#
1029	# Reset the camera and other view parameters
1030	#
1031	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
1032	SendCmd "dataset color [Color2RGB $itk_option(-plotforeground)]"
1033	ResetAxes
1034	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1035	$_arcball quaternion $q
1036	if {$_settings(isHeightmap) } {
1037	if { $_view(ortho)} {
1038	SendCmd "camera mode ortho"
1039	} else {
1040	SendCmd "camera mode persp"
1041	}
1042	SendCmd "camera reset"
1043	DoRotate
1044	}
1045	PanCamera
1046	InitSettings axisXGrid axisYGrid axisZGrid \
1047	axisVisible axisLabels
1048	InitSettings heightmapScale field isHeightmap
1049	if { [array size _fields] < 2 } {
1050	blt::table forget $itk_component(field) $itk_component(field_l)
1051	}
1052	RequestLegend
1053	set _reset 0
1054	}
1055	global readyForNextFrame
1056	set readyForNextFrame 0; # Don't advance to the next frame
1057
1058	# Actually write the commands to the server socket. If it fails, we don't
1059	# care. We're finished here.
1060	blt::busy hold $itk_component(hull)
1061	StopBufferingCommands
1062	blt::busy release $itk_component(hull)
1063	}
1064
1065	# ----------------------------------------------------------------------
1066	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1067	#
1068	# Returns a list of server IDs for the current datasets being displayed. This
1069	# is normally a single ID, but it might be a list of IDs if the current data
1070	# object has multiple components.
1071	# ----------------------------------------------------------------------
1072	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1073	set flag [lindex $args 0]
1074	switch -- $flag {
1075	"-all" {
1076	if { [llength $args] > 1 } {
1077	error "CurrentDatasets: can't specify dataobj after \"-all\""
1078	}
1079	set dlist [get -objects]
1080	}
1081	"-visible" {
1082	if { [llength $args] > 1 } {
1083	set dlist {}
1084	set args [lrange $args 1 end]
1085	foreach dataobj $args {
1086	if { [info exists _obj2ovride($dataobj-raise)] } {
1087	lappend dlist $dataobj
1088	}
1089	}
1090	} else {
1091	set dlist [get -visible]
1092	}
1093	}
1094	default {
1095	set dlist $args
1096	}
1097	}
1098	set rlist ""
1099	foreach dataobj $dlist {
1100	foreach comp [$dataobj components] {
1101	set tag $dataobj-$comp
1102	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1103	lappend rlist $tag
1104	}
1105	}
1106	}
1107	return $rlist
1108	}
1109
1110	# ----------------------------------------------------------------------
1111	# USAGE: Zoom in
1112	# USAGE: Zoom out
1113	# USAGE: Zoom reset
1114	#
1115	# Called automatically when the user clicks on one of the zoom
1116	# controls for this widget. Changes the zoom for the current view.
1117	# ----------------------------------------------------------------------
1118	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1119	switch -- $option {
1120	"in" {
1121	set _view(zoom) [expr {$_view(zoom)*1.25}]
1122	SendCmd "camera zoom $_view(zoom)"
1123	}
1124	"out" {
1125	set _view(zoom) [expr {$_view(zoom)*0.8}]
1126	SendCmd "camera zoom $_view(zoom)"
1127	}
1128	"reset" {
1129	array set _view {
1130	qw 0.36
1131	qx 0.25
1132	qy 0.50
1133	qz 0.70
1134	zoom 1.0
1135	xpan 0
1136	ypan 0
1137	}
1138	if { $_first != "" } {
1139	set location [$_first hints camera]
1140	if { $location != "" } {
1141	array set _view $location
1142	}
1143	}
1144	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1145	$_arcball quaternion $q
1146	SendCmd "camera reset"
1147	if {$_settings(isHeightmap) } {
1148	DoRotate
1149	}
1150	}
1151	}
1152	}
1153
1154	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1155	set x $_view(xpan)
1156	set y $_view(ypan)
1157	SendCmd "camera pan $x $y"
1158	}
1159
1160
1161	# ----------------------------------------------------------------------
1162	# USAGE: Rotate click <x> <y>
1163	# USAGE: Rotate drag <x> <y>
1164	# USAGE: Rotate release <x> <y>
1165	#
1166	# Called automatically when the user clicks/drags/releases in the
1167	# plot area. Moves the plot according to the user's actions.
1168	# ----------------------------------------------------------------------
1169	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1170	switch -- $option {
1171	"click" {
1172	$itk_component(view) configure -cursor fleur
1173	set _click(x) $x
1174	set _click(y) $y
1175	}
1176	"drag" {
1177	if {[array size _click] == 0} {
1178	Rotate click $x $y
1179	} else {
1180	set w [winfo width $itk_component(view)]
1181	set h [winfo height $itk_component(view)]
1182	if {$w <= 0 \|\| $h <= 0} {
1183	return
1184	}
1185
1186	if {[catch {
1187	# this fails sometimes for no apparent reason
1188	set dx [expr {double($x-$_click(x))/$w}]
1189	set dy [expr {double($y-$_click(y))/$h}]
1190	}]} {
1191	return
1192	}
1193	if { $dx == 0 && $dy == 0 } {
1194	return
1195	}
1196	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1197	EventuallyRotate $q
1198	set _click(x) $x
1199	set _click(y) $y
1200	}
1201	}
1202	"release" {
1203	Rotate drag $x $y
1204	$itk_component(view) configure -cursor ""
1205	catch {unset _click}
1206	}
1207	default {
1208	error "bad option \"$option\": should be click, drag, release"
1209	}
1210	}
1211	}
1212
1213	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1214	foreach tag [CurrentDatasets -visible] {
1215	SendCmd "dataset getscalar pixel $x $y $tag"
1216	}
1217	}
1218
1219	# ----------------------------------------------------------------------
1220	# USAGE: $this Pan click x y
1221	# $this Pan drag x y
1222	# $this Pan release x y
1223	#
1224	# Called automatically when the user clicks on one of the zoom
1225	# controls for this widget. Changes the zoom for the current view.
1226	# ----------------------------------------------------------------------
1227	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1228	switch -- $option {
1229	"set" {
1230	set w [winfo width $itk_component(view)]
1231	set h [winfo height $itk_component(view)]
1232	set x [expr $x / double($w)]
1233	set y [expr $y / double($h)]
1234	set _view(xpan) [expr $_view(xpan) + $x]
1235	set _view(ypan) [expr $_view(ypan) + $y]
1236	PanCamera
1237	return
1238	}
1239	"click" {
1240	set _click(x) $x
1241	set _click(y) $y
1242	$itk_component(view) configure -cursor hand1
1243	}
1244	"drag" {
1245	if { ![info exists _click(x)] } {
1246	set _click(x) $x
1247	}
1248	if { ![info exists _click(y)] } {
1249	set _click(y) $y
1250	}
1251	set w [winfo width $itk_component(view)]
1252	set h [winfo height $itk_component(view)]
1253	set dx [expr ($_click(x) - $x)/double($w)]
1254	set dy [expr ($_click(y) - $y)/double($h)]
1255	set _click(x) $x
1256	set _click(y) $y
1257	set _view(xpan) [expr $_view(xpan) - $dx]
1258	set _view(ypan) [expr $_view(ypan) - $dy]
1259	PanCamera
1260	}
1261	"release" {
1262	Pan drag $x $y
1263	$itk_component(view) configure -cursor ""
1264	}
1265	default {
1266	error "unknown option \"$option\": should set, click, drag, or release"
1267	}
1268	}
1269	}
1270
1271	# ----------------------------------------------------------------------
1272	# USAGE: InitSettings <what> ?<value>?
1273	#
1274	# Used internally to update rendering settings whenever parameters
1275	# change in the popup settings panel. Sends the new settings off
1276	# to the back end.
1277	# ----------------------------------------------------------------------
1278	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1279	foreach spec $args {
1280	if { [info exists _settings($_first-$spec)] } {
1281	# Reset global setting with dataobj specific setting
1282	set _settings($spec) $_settings($_first-$spec)
1283	}
1284	AdjustSetting $spec
1285	}
1286	}
1287
1288	#
1289	# AdjustSetting --
1290	#
1291	# Changes/updates a specific setting in the widget. There are
1292	# usually user-setable option. Commands are sent to the render
1293	# server.
1294	#
1295	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1296	if { $_beforeConnect } {
1297	return
1298	}
1299	switch -- $what {
1300	"axisFlymode" {
1301	set mode [$itk_component(axisflymode) value]
1302	set mode [$itk_component(axisflymode) translate $mode]
1303	set _settings($what) $mode
1304	SendCmd "axis flymode $mode"
1305	}
1306	"axisLabels" {
1307	set bool $_settings(axisLabels)
1308	SendCmd "axis labels all $bool"
1309	}
1310	"axisMinorTicks" {
1311	set bool $_settings(axisMinorTicks)
1312	foreach axis { x y z } {
1313	SendCmd "axis minticks ${axis} $bool"
1314	}
1315	}
1316	"axisVisible" {
1317	set bool $_settings(axisVisible)
1318	SendCmd "axis visible all $bool"
1319	}
1320	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1321	set axis [string tolower [string range $what 4 4]]
1322	set bool $_settings($what)
1323	SendCmd "axis grid $axis $bool"
1324	}
1325	"background" {
1326	set bgcolor [$itk_component(background) value]
1327	array set fgcolors {
1328	"black" "white"
1329	"white" "black"
1330	"grey" "black"
1331	}
1332	configure -plotbackground $bgcolor \
1333	-plotforeground $fgcolors($bgcolor)
1334	$itk_component(view) delete "legend"
1335	DrawLegend
1336	}
1337	"colormap" {
1338	set _changed(colormap) 1
1339	StartBufferingCommands
1340	set color [$itk_component(colormap) value]
1341	set _settings(colormap) $color
1342	if { $color == "none" } {
1343	if { $_settings(colormapVisible) } {
1344	SendCmd "heightmap surface 0"
1345	set _settings(colormapVisible) 0
1346	}
1347	} else {
1348	if { !$_settings(colormapVisible) } {
1349	SendCmd "heightmap surface 1"
1350	set _settings(colormapVisible) 1
1351	}
1352	SetCurrentColormap $color
1353	if {$_settings(colormapDiscrete)} {
1354	set numColors [expr $_settings(numIsolines) - 1]
1355	SendCmd "colormap res $numColors $color"
1356	}
1357	}
1358	#SendCmd "heightmap colormode scalar $_curFldName"
1359	#SendCmd "dataset scalar $_curFldName"
1360	StopBufferingCommands
1361	EventuallyRequestLegend
1362	}
1363	"colormapVisible" {
1364	set bool $_settings($what)
1365	SendCmd "heightmap surface $bool"
1366	}
1367	"colormapDiscrete" {
1368	set bool $_settings($what)
1369	set numColors [expr $_settings(numIsolines) - 1]
1370	StartBufferingCommands
1371	if {$bool} {
1372	SendCmd "colormap res $numColors"
1373	} else {
1374	SendCmd "colormap res default"
1375	}
1376	SendCmd "heightmap preinterp $bool"
1377	StopBufferingCommands
1378	EventuallyRequestLegend
1379	}
1380	"edges" {
1381	set bool $_settings(edges)
1382	SendCmd "heightmap edges $bool"
1383	}
1384	"field" {
1385	set label [$itk_component(field) value]
1386	set fname [$itk_component(field) translate $label]
1387	set _settings(field) $fname
1388	if { [info exists _fields($fname)] } {
1389	foreach { label units components } $_fields($fname) break
1390	if { $components > 1 } {
1391	set _colorMode vmag
1392	} else {
1393	set _colorMode scalar
1394	}
1395	set _curFldName $fname
1396	set _curFldLabel $label
1397	} else {
1398	puts stderr "unknown field \"$fname\""
1399	return
1400	}
1401	set label [$_first hints zlabel]
1402	if { $label == "" } {
1403	if { [string match "component*" $_curFldName] } {
1404	set label Z
1405	} else {
1406	set label $_curFldLabel
1407	}
1408	}
1409	# May be a space in the axis label.
1410	SendCmd [list axis name z $label]
1411
1412	if { [$_first hints zunits] == "" } {
1413	set units [lindex $_fields($_curFldName) 1]
1414	} else {
1415	set units [$_first hints zunits]
1416	}
1417	if { $units != "" } {
1418	# May be a space in the axis units.
1419	SendCmd [list axis units z $units]
1420	}
1421	# Get the new limits because the field changed.
1422	ResetAxes
1423	SendCmd "dataset scalar $_curFldName"
1424	SendCmd "heightmap colormode scalar $_curFldName"
1425	SendCmd "camera reset"
1426	DrawLegend
1427	}
1428	"heightmapScale" {
1429	if { $_settings(isHeightmap) } {
1430	set scale [GetHeightmapScale]
1431	foreach dataset [CurrentDatasets -all] {
1432	SendCmd "heightmap heightscale $scale $dataset"
1433	set _comp2scale($dataset) $scale
1434	}
1435	ResetAxes
1436	}
1437	}
1438	"isHeightmap" {
1439	set bool $_settings(isHeightmap)
1440	set c $itk_component(view)
1441	StartBufferingCommands
1442	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1443	if { $bool } {
1444	set _settings(heightmapScale) 50
1445	set _settings(opacity) $_settings(saveOpacity)
1446	set _settings(lighting) $_settings(saveLighting)
1447	} else {
1448	set _settings(heightmapScale) 0
1449	set _settings(lighting) 0
1450	set _settings(opacity) 100
1451	}
1452	AdjustSetting lighting
1453	AdjustSetting opacity
1454	set scale [GetHeightmapScale]
1455	foreach dataset [CurrentDatasets -all] {
1456	SendCmd "heightmap heightscale $scale $dataset"
1457	set _comp2scale($dataset) $scale
1458	}
1459	if { $bool } {
1460	$itk_component(lighting) configure -state normal
1461	$itk_component(opacity) configure -state normal
1462	$itk_component(scale) configure -state normal
1463	$itk_component(opacity_l) configure -state normal
1464	$itk_component(scale_l) configure -state normal
1465	if {$_view(ortho)} {
1466	SendCmd "camera mode ortho"
1467	} else {
1468	SendCmd "camera mode persp"
1469	}
1470	} else {
1471	$itk_component(lighting) configure -state disabled
1472	$itk_component(opacity) configure -state disabled
1473	$itk_component(scale) configure -state disabled
1474	$itk_component(opacity_l) configure -state disabled
1475	$itk_component(scale_l) configure -state disabled
1476	SendCmd "camera mode image"
1477	}
1478	if {$_settings(stretchToFit)} {
1479	if {$scale == 0} {
1480	SendCmd "camera aspect window"
1481	} else {
1482	SendCmd "camera aspect square"
1483	}
1484	}
1485	ResetAxes
1486	SendCmd "camera reset"
1487	if { $bool } {
1488	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1489	$_arcball quaternion $q
1490	SendCmd "camera orient $q"
1491	} else {
1492	bind $c <ButtonPress-1> {}
1493	bind $c <B1-Motion> {}
1494	bind $c <ButtonRelease-1> {}
1495	}
1496	# Fix the mouse bindings for rotation/panning and the
1497	# camera mode. Ideally we'd create a bindtag for these.
1498	if { $bool } {
1499	# Bindings for rotation via mouse
1500	bind $c <ButtonPress-1> \
1501	[itcl::code $this Rotate click %x %y]
1502	bind $c <B1-Motion> \
1503	[itcl::code $this Rotate drag %x %y]
1504	bind $c <ButtonRelease-1> \
1505	[itcl::code $this Rotate release %x %y]
1506	}
1507	StopBufferingCommands
1508	}
1509	"isolineColor" {
1510	set color [$itk_component(isolinecolor) value]
1511	if { $color == "none" } {
1512	if { $_settings(isolinesVisible) } {
1513	SendCmd "heightmap isolines 0"
1514	set _settings(isolinesVisible) 0
1515	}
1516	} else {
1517	if { !$_settings(isolinesVisible) } {
1518	SendCmd "heightmap isolines 1"
1519	set _settings(isolinesVisible) 1
1520	}
1521	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1522	}
1523	DrawLegend
1524	}
1525	"isolinesVisible" {
1526	set bool $_settings($what)
1527	SendCmd "heightmap isolines $bool"
1528	DrawLegend
1529	}
1530	"legendVisible" {
1531	if { !$_settings($what) } {
1532	$itk_component(view) delete legend
1533	}
1534	DrawLegend
1535	}
1536	"lighting" {
1537	if { $_settings(isHeightmap) } {
1538	set _settings(saveLighting) $_settings(lighting)
1539	set bool $_settings($what)
1540	SendCmd "heightmap lighting $bool"
1541	} else {
1542	SendCmd "heightmap lighting 0"
1543	}
1544	}
1545	"numIsolines" {
1546	set _changed(numIsolines) 1
1547	set _settings(numIsolines) [$itk_component(numisolines) value]
1548	set _currentNumIsolines $_settings(numIsolines)
1549	SendCmd "heightmap numcontours $_settings(numIsolines)"
1550	if {$_settings(colormapDiscrete)} {
1551	set numColors [expr $_settings(numIsolines) - 1]
1552	SendCmd "colormap res $numColors"
1553	EventuallyRequestLegend
1554	} else {
1555	DrawLegend
1556	}
1557	}
1558	"opacity" {
1559	set _changed(opacity) 1
1560	if { $_settings(isHeightmap) } {
1561	set _settings(saveOpacity) $_settings(opacity)
1562	set val $_settings(opacity)
1563	set sval [expr { 0.01 * double($val) }]
1564	SendCmd "heightmap opacity $sval"
1565	} else {
1566	SendCmd "heightmap opacity 1"
1567	}
1568	}
1569	"outline" {
1570	set bool $_settings($what)
1571	SendCmd "dataset outline $bool"
1572	}
1573	"stretchToFit" {
1574	set bool $_settings($what)
1575	if { $bool } {
1576	set heightScale [GetHeightmapScale]
1577	if {$heightScale == 0} {
1578	SendCmd "camera aspect window"
1579	} else {
1580	SendCmd "camera aspect square"
1581	}
1582	} else {
1583	SendCmd "camera aspect native"
1584	}
1585	}
1586	"wireframe" {
1587	set bool $_settings($what)
1588	SendCmd "heightmap wireframe $bool"
1589	}
1590	default {
1591	error "don't know how to fix $what"
1592	}
1593	}
1594	}
1595
1596	#
1597	# RequestLegend --
1598	#
1599	# Request a new legend from the server. The size of the legend
1600	# is determined from the height of the canvas.
1601	#
1602	# This should be called when
1603	# 1. A new current colormap is set.
1604	# 2. Window is resized.
1605	# 3. The limits of the data have changed. (Just need a redraw).
1606	# 4. Number of isolines have changed. (Just need a redraw).
1607	# 5. Legend becomes visible (Just need a redraw).
1608	#
1609	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1610	set _legendPending 0
1611	set font "Arial 8"
1612	set w 12
1613	set lineht [font metrics $font -linespace]
1614	# color ramp height = (canvas height) - (min and max value lines) - 2
1615	set h [expr {$_height - 2 * ($lineht + 2)}]
1616	set _legendHeight $h
1617
1618	set fname $_curFldName
1619	if { [string match "component*" $fname] } {
1620	set title ""
1621	} else {
1622	if { [info exists _fields($fname)] } {
1623	foreach { title units } $_fields($fname) break
1624	if { $units != "" } {
1625	set title [format "%s (%s)" $title $units]
1626	}
1627	} else {
1628	set title $fname
1629	}
1630	}
1631	# If there's a title too, substract one more line
1632	if { $title != "" } {
1633	incr h -$lineht
1634	}
1635	if { $h < 1} {
1636	return
1637	}
1638	# Set the legend on the first heightmap dataset.
1639	if { $_currentColormap != "" } {
1640	set cmap $_currentColormap
1641	SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1642	#SendCmd "heightmap colormode scalar $_curFldName"
1643	#SendCmd "dataset scalar $_curFldName"
1644	}
1645	}
1646
1647	#
1648	# ResetAxes --
1649	#
1650	# Set axis z bounds and range
1651	#
1652	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1653	if { ![info exists _limits($_curFldName)]} {
1654	SendCmd "dataset maprange all"
1655	SendCmd "axis autorange z on"
1656	SendCmd "axis autobounds z on"
1657	return
1658	}
1659	foreach { xmin xmax } $_limits(x) break
1660	foreach { ymin ymax } $_limits(y) break
1661	foreach { vmin vmax } $_limits($_curFldName) break
1662
1663	global tcl_precision
1664	set tcl_precision 17
1665	set xr [expr $xmax - $xmin]
1666	set yr [expr $ymax - $ymin]
1667	set vr [expr $vmax - $vmin]
1668	set r [expr ($yr > $xr) ? $yr : $xr]
1669	if { $vr < 1.0e-17 } {
1670	set dataScale 1.0
1671	} else {
1672	set dataScale [expr $r / $vr]
1673	}
1674	set heightScale [GetHeightmapScale]
1675	set bmin [expr $heightScale * $dataScale * $vmin]
1676	set bmax [expr $heightScale * $dataScale * $vmax]
1677	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1678	SendCmd "axis bounds z $bmin $bmax"
1679	SendCmd "axis range z $_limits($_curFldName)"
1680	}
1681
1682	#
1683	# SetCurrentColormap --
1684	#
1685	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1686	# Keep track of the colormaps that we build.
1687	if { ![info exists _colormaps($name)] } {
1688	BuildColormap $name
1689	set _colormaps($name) 1
1690	}
1691	set _currentColormap $name
1692	SendCmd "heightmap colormap $_currentColormap"
1693	}
1694
1695
1696	#
1697	# BuildColormap --
1698	#
1699	# Build the designated colormap on the server.
1700	#
1701	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1702	set cmap [ColorsToColormap $name]
1703	if { [llength $cmap] == 0 } {
1704	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1705	}
1706	set wmap "0.0 1.0 1.0 1.0"
1707	SendCmd "colormap add $name { $cmap } { $wmap }"
1708	}
1709
1710	# ----------------------------------------------------------------------
1711	# CONFIGURATION OPTION: -mode
1712	# ----------------------------------------------------------------------
1713	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1714	switch -- $itk_option(-mode) {
1715	"heightmap" {
1716	set _settings(isHeightmap) 1
1717	}
1718	"contour" {
1719	set _settings(isHeightmap) 0
1720	}
1721	default {
1722	error "unknown mode settings \"$itk_option(-mode)\""
1723	}
1724	}
1725	AdjustSetting isHeightmap
1726	}
1727
1728	# ----------------------------------------------------------------------
1729	# CONFIGURATION OPTION: -plotbackground
1730	# ----------------------------------------------------------------------
1731	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1732	if { [isconnected] } {
1733	set rgb [Color2RGB $itk_option(-plotbackground)]
1734	SendCmd "screen bgcolor $rgb"
1735	$itk_component(view) configure -background $itk_option(-plotbackground)
1736	}
1737	}
1738
1739	# ----------------------------------------------------------------------
1740	# CONFIGURATION OPTION: -plotforeground
1741	# ----------------------------------------------------------------------
1742	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1743	if { [isconnected] } {
1744	set rgb [Color2RGB $itk_option(-plotforeground)]
1745	SendCmd "dataset color $rgb"
1746	SendCmd "axis color all $rgb"
1747	}
1748	}
1749
1750	itcl::body Rappture::VtkHeightmapViewer::limits3 { dataobj } {
1751	lappend limits x [$dataobj limits x]
1752	lappend limits y [$dataobj limits y]
1753	if { [catch { $dataobj limits $_curFldName } vlim] != 0 } {
1754	set vlim [$dataobj limits v]
1755	}
1756	lappend limits v $vlim
1757	return $limits
1758	}
1759
1760	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1761
1762	set fg [option get $itk_component(hull) font Font]
1763	#set bfg [option get $itk_component(hull) boldFont Font]
1764
1765	set inner [$itk_component(main) insert end \
1766	-title "Contour/Surface Settings" \
1767	-icon [Rappture::icon contour]]
1768	$inner configure -borderwidth 4
1769
1770	checkbutton $inner.legend \
1771	-text "Legend" \
1772	-variable [itcl::scope _settings(legendVisible)] \
1773	-command [itcl::code $this AdjustSetting legendVisible] \
1774	-font "Arial 9"
1775
1776	checkbutton $inner.wireframe \
1777	-text "Wireframe" \
1778	-variable [itcl::scope _settings(wireframe)] \
1779	-command [itcl::code $this AdjustSetting wireframe] \
1780	-font "Arial 9"
1781
1782	itk_component add lighting {
1783	checkbutton $inner.lighting \
1784	-text "Enable Lighting" \
1785	-variable [itcl::scope _settings(lighting)] \
1786	-command [itcl::code $this AdjustSetting lighting] \
1787	-font "Arial 9"
1788	} {
1789	ignore -font
1790	}
1791	checkbutton $inner.edges \
1792	-text "Edges" \
1793	-variable [itcl::scope _settings(edges)] \
1794	-command [itcl::code $this AdjustSetting edges] \
1795	-font "Arial 9"
1796
1797	checkbutton $inner.outline \
1798	-text "Outline" \
1799	-variable [itcl::scope _settings(outline)] \
1800	-command [itcl::code $this AdjustSetting outline] \
1801	-font "Arial 9"
1802
1803	checkbutton $inner.stretch \
1804	-text "Stretch to fit" \
1805	-variable [itcl::scope _settings(stretchToFit)] \
1806	-command [itcl::code $this AdjustSetting stretchToFit] \
1807	-font "Arial 9"
1808
1809	checkbutton $inner.isolines \
1810	-text "Isolines" \
1811	-variable [itcl::scope _settings(isolinesVisible)] \
1812	-command [itcl::code $this AdjustSetting isolinesVisible] \
1813	-font "Arial 9"
1814
1815	checkbutton $inner.colormapDiscrete \
1816	-text "Discrete Colormap" \
1817	-variable [itcl::scope _settings(colormapDiscrete)] \
1818	-command [itcl::code $this AdjustSetting colormapDiscrete] \
1819	-font "Arial 9"
1820
1821	itk_component add field_l {
1822	label $inner.field_l -text "Field" -font "Arial 9"
1823	} {
1824	ignore -font
1825	}
1826	itk_component add field {
1827	Rappture::Combobox $inner.field -width 10 -editable no
1828	}
1829	bind $inner.field <<Value>> \
1830	[itcl::code $this AdjustSetting field]
1831
1832	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1833	itk_component add colormap {
1834	Rappture::Combobox $inner.colormap -width 10 -editable no
1835	}
1836	$inner.colormap choices insert end \
1837	"BCGYR" "BCGYR" \
1838	"BGYOR" "BGYOR" \
1839	"blue" "blue" \
1840	"blue-to-brown" "blue-to-brown" \
1841	"blue-to-orange" "blue-to-orange" \
1842	"blue-to-grey" "blue-to-grey" \
1843	"green-to-magenta" "green-to-magenta" \
1844	"greyscale" "greyscale" \
1845	"nanohub" "nanohub" \
1846	"rainbow" "rainbow" \
1847	"spectral" "spectral" \
1848	"ROYGB" "ROYGB" \
1849	"RYGCB" "RYGCB" \
1850	"brown-to-blue" "brown-to-blue" \
1851	"grey-to-blue" "grey-to-blue" \
1852	"orange-to-blue" "orange-to-blue" \
1853	"none" "none"
1854
1855	$itk_component(colormap) value "BCGYR"
1856	bind $inner.colormap <<Value>> \
1857	[itcl::code $this AdjustSetting colormap]
1858
1859	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1860	itk_component add isolinecolor {
1861	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1862	}
1863	$inner.isolinecolor choices insert end \
1864	"black" "black" \
1865	"blue" "blue" \
1866	"cyan" "cyan" \
1867	"green" "green" \
1868	"grey" "grey" \
1869	"magenta" "magenta" \
1870	"orange" "orange" \
1871	"red" "red" \
1872	"white" "white" \
1873	"none" "none"
1874
1875	$itk_component(isolinecolor) value "black"
1876	bind $inner.isolinecolor <<Value>> \
1877	[itcl::code $this AdjustSetting isolineColor]
1878
1879	label $inner.background_l -text "Background Color" -font "Arial 9"
1880	itk_component add background {
1881	Rappture::Combobox $inner.background -width 10 -editable no
1882	}
1883	$inner.background choices insert end \
1884	"black" "black" \
1885	"white" "white" \
1886	"grey" "grey"
1887
1888	$itk_component(background) value "white"
1889	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1890
1891	itk_component add opacity_l {
1892	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1893	} {
1894	ignore -font
1895	}
1896	itk_component add opacity {
1897	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1898	-variable [itcl::scope _settings(opacity)] \
1899	-showvalue off \
1900	-command [itcl::code $this AdjustSetting opacity]
1901	}
1902	itk_component add scale_l {
1903	label $inner.scale_l -text "Scale" -font "Arial 9"
1904	} {
1905	ignore -font
1906	}
1907	itk_component add scale {
1908	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1909	-variable [itcl::scope _settings(heightmapScale)] \
1910	-showvalue off \
1911	-command [itcl::code $this AdjustSetting heightmapScale]
1912	}
1913	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1914	itk_component add numisolines {
1915	Rappture::Spinint $inner.numisolines \
1916	-min 2 -max 50 -font "arial 9"
1917	}
1918	$itk_component(numisolines) value $_settings(numIsolines)
1919	bind $itk_component(numisolines) <<Value>> \
1920	[itcl::code $this AdjustSetting numIsolines]
1921
1922	frame $inner.separator -height 2 -relief sunken -bd 1
1923	blt::table $inner \
1924	0,0 $inner.field_l -anchor w -pady 2 \
1925	0,1 $inner.field -anchor w -pady 2 -fill x \
1926	1,0 $inner.colormap_l -anchor w -pady 2 \
1927	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1928	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
1929	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
1930	3,0 $inner.background_l -anchor w -pady 2 \
1931	3,1 $inner.background -anchor w -pady 2 -fill x \
1932	4,0 $inner.numisolines_l -anchor w -pady 2 \
1933	4,1 $inner.numisolines -anchor w -pady 2 \
1934	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
1935	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1936	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1937	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
1938	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
1939	10,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1940	11,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
1941	12,0 $inner.separator -padx 2 -fill x -cspan 2 \
1942	13,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1943	14,0 $inner.opacity_l -anchor w -pady 2 \
1944	14,1 $inner.opacity -fill x -pady 2 \
1945	15,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
1946	15,1 $inner.scale -fill x -pady 2 -cspan 2 \
1947
1948	blt::table configure $inner r* c* -resize none
1949	blt::table configure $inner r16 c1 -resize expand
1950	}
1951
1952	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
1953
1954	set fg [option get $itk_component(hull) font Font]
1955	#set bfg [option get $itk_component(hull) boldFont Font]
1956
1957	set inner [$itk_component(main) insert end \
1958	-title "Axis Settings" \
1959	-icon [Rappture::icon axis1]]
1960	$inner configure -borderwidth 4
1961
1962	checkbutton $inner.visible \
1963	-text "Axes" \
1964	-variable [itcl::scope _settings(axisVisible)] \
1965	-command [itcl::code $this AdjustSetting axisVisible] \
1966	-font "Arial 9"
1967	checkbutton $inner.labels \
1968	-text "Axis Labels" \
1969	-variable [itcl::scope _settings(axisLabels)] \
1970	-command [itcl::code $this AdjustSetting axisLabels] \
1971	-font "Arial 9"
1972	label $inner.grid_l -text "Grid" -font "Arial 9"
1973	checkbutton $inner.xgrid \
1974	-text "X" \
1975	-variable [itcl::scope _settings(axisXGrid)] \
1976	-command [itcl::code $this AdjustSetting axisXGrid] \
1977	-font "Arial 9"
1978	checkbutton $inner.ygrid \
1979	-text "Y" \
1980	-variable [itcl::scope _settings(axisYGrid)] \
1981	-command [itcl::code $this AdjustSetting axisYGrid] \
1982	-font "Arial 9"
1983	checkbutton $inner.zgrid \
1984	-text "Z" \
1985	-variable [itcl::scope _settings(axisZGrid)] \
1986	-command [itcl::code $this AdjustSetting axisZGrid] \
1987	-font "Arial 9"
1988	checkbutton $inner.minorticks \
1989	-text "Minor Ticks" \
1990	-variable [itcl::scope _settings(axisMinorTicks)] \
1991	-command [itcl::code $this AdjustSetting axisMinorTicks] \
1992	-font "Arial 9"
1993
1994
1995	label $inner.mode_l -text "Mode" -font "Arial 9"
1996
1997	itk_component add axisflymode {
1998	Rappture::Combobox $inner.mode -width 10 -editable no
1999	}
2000	$inner.mode choices insert end \
2001	"static_triad" "static" \
2002	"closest_triad" "closest" \
2003	"furthest_triad" "furthest" \
2004	"outer_edges" "outer"
2005	$itk_component(axisflymode) value "static"
2006	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlymode]
2007
2008	blt::table $inner \
2009	0,0 $inner.visible -anchor w -cspan 4 \
2010	1,0 $inner.labels -anchor w -cspan 4 \
2011	2,0 $inner.minorticks -anchor w -cspan 4 \
2012	4,0 $inner.grid_l -anchor w \
2013	4,1 $inner.xgrid -anchor w \
2014	4,2 $inner.ygrid -anchor w \
2015	4,3 $inner.zgrid -anchor w \
2016	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2017	5,1 $inner.mode -fill x -cspan 3
2018
2019	blt::table configure $inner r* c* -resize none
2020	blt::table configure $inner r7 c6 -resize expand
2021	blt::table configure $inner r3 -height 0.125i
2022	}
2023
2024
2025	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2026	set inner [$itk_component(main) insert end \
2027	-title "Camera Settings" \
2028	-icon [Rappture::icon camera]]
2029	$inner configure -borderwidth 4
2030
2031	set labels { qx qy qz qw xpan ypan zoom }
2032	set row 0
2033	foreach tag $labels {
2034	label $inner.${tag}label -text $tag -font "Arial 9"
2035	entry $inner.${tag} -font "Arial 9" -bg white \
2036	-textvariable [itcl::scope _view($tag)]
2037	bind $inner.${tag} <Return> \
2038	[itcl::code $this camera set ${tag}]
2039	bind $inner.${tag} <KP_Enter> \
2040	[itcl::code $this camera set ${tag}]
2041	blt::table $inner \
2042	$row,0 $inner.${tag}label -anchor e -pady 2 \
2043	$row,1 $inner.${tag} -anchor w -pady 2
2044	blt::table configure $inner r$row -resize none
2045	incr row
2046	}
2047	checkbutton $inner.ortho \
2048	-text "Orthographic Projection" \
2049	-variable [itcl::scope _view(ortho)] \
2050	-command [itcl::code $this camera set ortho] \
2051	-font "Arial 9"
2052	blt::table $inner \
2053	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2054	blt::table configure $inner r$row -resize none
2055	incr row
2056
2057	blt::table configure $inner c0 c1 -resize none
2058	blt::table configure $inner c2 -resize expand
2059	blt::table configure $inner r$row -resize expand
2060	}
2061
2062	#
2063	# camera --
2064	#
2065	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2066	switch -- $option {
2067	"show" {
2068	puts [array get _view]
2069	}
2070	"set" {
2071	set who [lindex $args 0]
2072	set x $_view($who)
2073	set code [catch { string is double $x } result]
2074	if { $code != 0 \|\| !$result } {
2075	return
2076	}
2077	switch -- $who {
2078	"ortho" {
2079	if {$_view(ortho)} {
2080	SendCmd "camera mode ortho"
2081	} else {
2082	SendCmd "camera mode persp"
2083	}
2084	}
2085	"xpan" - "ypan" {
2086	PanCamera
2087	}
2088	"qx" - "qy" - "qz" - "qw" {
2089	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2090	$_arcball quaternion $q
2091	EventuallyRotate $q
2092	}
2093	"zoom" {
2094	SendCmd "camera zoom $_view(zoom)"
2095	}
2096	}
2097	}
2098	}
2099	}
2100
2101	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2102	set bytes ""
2103	foreach dataobj [get] {
2104	foreach comp [$dataobj components] {
2105	set tag $dataobj-$comp
2106	#set contents [ConvertToVtkData $dataobj $comp]
2107	set contents [$dataobj vtkdata $comp]
2108	append bytes "$contents\n\n"
2109	}
2110	}
2111	return [list .vtk $bytes]
2112	}
2113
2114	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2115	if { [image width $_image(download)] > 0 &&
2116	[image height $_image(download)] > 0 } {
2117	set bytes [$_image(download) data -format "jpeg -quality 100"]
2118	set bytes [Rappture::encoding::decode -as b64 $bytes]
2119	return [list .jpg $bytes]
2120	}
2121	return ""
2122	}
2123
2124	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2125	Rappture::Balloon $popup \
2126	-title "[Rappture::filexfer::label downloadWord] as..."
2127	set inner [$popup component inner]
2128	label $inner.summary -text "" -anchor w
2129	radiobutton $inner.vtk_button -text "VTK data file" \
2130	-variable [itcl::scope _downloadPopup(format)] \
2131	-font "Arial 9 " \
2132	-value vtk
2133	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2134	radiobutton $inner.image_button -text "Image File" \
2135	-variable [itcl::scope _downloadPopup(format)] \
2136	-font "Arial 9 " \
2137	-value image
2138	Rappture::Tooltip::for $inner.image_button \
2139	"Save as digital image."
2140
2141	button $inner.ok -text "Save" \
2142	-highlightthickness 0 -pady 2 -padx 3 \
2143	-command $command \
2144	-compound left \
2145	-image [Rappture::icon download]
2146
2147	button $inner.cancel -text "Cancel" \
2148	-highlightthickness 0 -pady 2 -padx 3 \
2149	-command [list $popup deactivate] \
2150	-compound left \
2151	-image [Rappture::icon cancel]
2152
2153	blt::table $inner \
2154	0,0 $inner.summary -cspan 2 \
2155	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2156	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2157	4,1 $inner.cancel -width .9i -fill y \
2158	4,0 $inner.ok -padx 2 -width .9i -fill y
2159	blt::table configure $inner r3 -height 4
2160	blt::table configure $inner r4 -pady 4
2161	raise $inner.image_button
2162	$inner.vtk_button invoke
2163	return $inner
2164	}
2165
2166	#
2167	# SetObjectStyle --
2168	#
2169	# Set the style of the heightmap/contour object. This gets calls
2170	# for each dataset once as it is loaded. It can overridden by
2171	# the user controls.
2172	#
2173	#
2174	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2175	# Parse style string.
2176	set tag $dataobj-$comp
2177	array set style {
2178	-color BCGYR
2179	-opacity 100
2180	-levels 10
2181	}
2182	set stylelist [$dataobj style $comp]
2183	if { $stylelist != "" } {
2184	array set style $stylelist
2185	}
2186	# This is too complicated. We want to set the colormap, number of
2187	# isolines and opacity for the object. They can be the default values,
2188	# the style hints set with the dataset, or set by user controls. As
2189	# datasets get loaded, they first use the defaults that are overidden
2190	# by the style hints. If the user changes the global controls, then that
2191	# overrides everything else. I don't know what it means when global
2192	# controls are specified as style hints by each dataset. It complicates
2193	# the code to handle aberrant cases.
2194
2195	if { $_changed(opacity) } {
2196	set style(-opacity) $_settings(opacity)
2197	}
2198	if { $_changed(numIsolines) } {
2199	set style(-levels) $_settings(numIsolines)
2200	}
2201	if { $_changed(colormap) } {
2202	set style(-color) $_settings(colormap)
2203	}
2204	if { $_currentColormap == "" } {
2205	$itk_component(colormap) value $style(-color)
2206	}
2207	set _currentOpacity $style(-opacity)
2208	if { $_currentNumIsolines != $style(-levels) } {
2209	set _currentNumIsolines $style(-levels)
2210	set _settings(numIsolines) $_currentNumIsolines
2211	DrawLegend
2212	}
2213	SendCmd "dataset outline $_settings(outline) $tag"
2214	SendCmd "dataset color [Color2RGB $itk_option(-plotforeground)] $tag"
2215	set scale [GetHeightmapScale]
2216	SendCmd "heightmap add numcontours $_currentNumIsolines $scale $tag"
2217	set _comp2scale($tag) $_settings(heightmapScale)
2218	SendCmd "heightmap edges $_settings(edges) $tag"
2219	SendCmd "heightmap wireframe $_settings(wireframe) $tag"
2220	SetCurrentColormap $style(-color)
2221	set color [$itk_component(isolinecolor) value]
2222	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2223	SendCmd "heightmap lighting $_settings(isHeightmap) $tag"
2224	}
2225
2226	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2227	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2228	return 0
2229	}
2230	return 1
2231	}
2232
2233	# ----------------------------------------------------------------------
2234	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2235	#
2236	# Invoked automatically whenever the "legend" command comes in from
2237	# the rendering server. Indicates that binary image data with the
2238	# specified <size> will follow.
2239	# ----------------------------------------------------------------------
2240	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2241	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2242	if { [isconnected] } {
2243	set bytes [ReceiveBytes $size]
2244	if { ![info exists _image(legend)] } {
2245	set _image(legend) [image create photo]
2246	}
2247	$_image(legend) configure -data $bytes
2248	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2249	if { [catch {DrawLegend} errs] != 0 } {
2250	global errorInfo
2251	puts stderr "errs=$errs errorInfo=$errorInfo"
2252	}
2253	}
2254	}
2255
2256	#
2257	# DrawLegend --
2258	#
2259	# Draws the legend in the own canvas on the right side of the plot area.
2260	#
2261	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2262	set fname $_curFldName
2263	set c $itk_component(view)
2264	set w [winfo width $c]
2265	set h [winfo height $c]
2266	set font "Arial 8"
2267	set lineht [font metrics $font -linespace]
2268
2269	if { [string match "component*" $fname] } {
2270	set title ""
2271	} else {
2272	if { [info exists _fields($fname)] } {
2273	foreach { title units } $_fields($fname) break
2274	if { $units != "" } {
2275	set title [format "%s (%s)" $title $units]
2276	}
2277	} else {
2278	set title $fname
2279	}
2280	}
2281	set x [expr $w - 2]
2282	if { !$_settings(legendVisible) } {
2283	$c delete legend
2284	return
2285	}
2286	if { [$c find withtag "legend"] == "" } {
2287	set y 2
2288	# If there's a legend title, create a text item for the title.
2289	$c create text $x $y \
2290	-anchor ne \
2291	-fill $itk_option(-plotforeground) -tags "title legend" \
2292	-font $font
2293	incr y $lineht
2294	$c create text $x $y \
2295	-anchor ne \
2296	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2297	-font $font
2298	incr y $lineht
2299	$c create image $x $y \
2300	-anchor ne \
2301	-image $_image(legend) -tags "colormap legend"
2302	$c create rectangle $x $y 1 1 \
2303	-fill "" -outline "" -tags "sensor legend"
2304	$c create text $x [expr {$h-2}] \
2305	-anchor se \
2306	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2307	-font $font
2308	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2309	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2310	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2311	}
2312	$c delete isoline
2313	set x2 $x
2314	set iw [image width $_image(legend)]
2315	set ih [image height $_image(legend)]
2316	set x1 [expr $x2 - ($iw*12)/10]
2317	set color [$itk_component(isolinecolor) value]
2318
2319	# Draw the isolines on the legend.
2320	if { $color != "none" && [info exists _limits($_curFldName)] &&
2321	$_settings(isolinesVisible) && $_currentNumIsolines > 0 } {
2322	set pixels [blt::vector create \#auto]
2323	set values [blt::vector create \#auto]
2324	set range [image height $_image(legend)]
2325	# Order of pixels is max to min (max is at top of legend).
2326	$pixels seq $ih 0 $_currentNumIsolines
2327
2328	set offset [expr 2 + $lineht]
2329	# If there's a legend title, increase the offset by the line height.
2330	if { $title != "" } {
2331	incr offset $lineht
2332	}
2333	$pixels expr {round($pixels + $offset)}
2334	# Order of values is min to max.
2335	foreach { vmin vmax } $_limits($_curFldName) break
2336	$values seq $vmin $vmax $_currentNumIsolines
2337	set tags "isoline legend"
2338	array unset _isolines
2339	foreach pos [$pixels range 0 end] value [$values range end 0] {
2340	set y1 [expr int($pos)]
2341	for { set off 0 } { $off < 3 } { incr off } {
2342	set _isolines([expr $y1 + $off]) $value
2343	set _isolines([expr $y1 - $off]) $value
2344	}
2345	set id [$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags]
2346	}
2347	blt::vector destroy $pixels $values
2348	}
2349
2350	$c bind title <ButtonPress> [itcl::code $this Combo post]
2351	$c bind title <Enter> [itcl::code $this Combo activate]
2352	$c bind title <Leave> [itcl::code $this Combo deactivate]
2353	# Reset the item coordinates according the current size of the plot.
2354	if { [info exists _limits($_curFldName)] } {
2355	foreach { vmin vmax } $_limits($_curFldName) break
2356	$c itemconfigure vmin -text [format %g $vmin]
2357	$c itemconfigure vmax -text [format %g $vmax]
2358	}
2359	set y 2
2360	# If there's a legend title, move the title to the correct position
2361	if { $title != "" } {
2362	$c itemconfigure title -text $title
2363	$c coords title $x $y
2364	incr y $lineht
2365	}
2366	$c coords vmax $x $y
2367	incr y $lineht
2368	$c coords colormap $x $y
2369	set ix [image width $_image(legend)]
2370	set ih [image height $_image(legend)]
2371	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2372	$c raise sensor
2373	$c coords vmin $x [expr {$h - 2}]
2374	}
2375
2376	#
2377	# EnterLegend --
2378	#
2379	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2380	SetLegendTip $x $y
2381	}
2382
2383	#
2384	# MotionLegend --
2385	#
2386	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2387	Rappture::Tooltip::tooltip cancel
2388	set c $itk_component(view)
2389	set cw [winfo width $c]
2390	set ch [winfo height $c]
2391	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2392	SetLegendTip $x $y
2393	}
2394	}
2395
2396	#
2397	# LeaveLegend --
2398	#
2399	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2400	Rappture::Tooltip::tooltip cancel
2401	.rappturetooltip configure -icon ""
2402	}
2403
2404	#
2405	# SetLegendTip --
2406	#
2407	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2408	set fname $_curFldName
2409	set c $itk_component(view)
2410	set w [winfo width $c]
2411	set h [winfo height $c]
2412	set font "Arial 8"
2413	set lineht [font metrics $font -linespace]
2414
2415	set ih [image height $_image(legend)]
2416	# Subtract off the offset of the color ramp from the top of the canvas
2417	set iy [expr $y - ($lineht + 2)]
2418
2419	if { [string match "component*" $fname] } {
2420	set title ""
2421	} else {
2422	if { [info exists _fields($fname)] } {
2423	foreach { title units } $_fields($fname) break
2424	if { $units != "" } {
2425	set title [format "%s (%s)" $title $units]
2426	}
2427	} else {
2428	set title $fname
2429	}
2430	}
2431	# If there's a legend title, increase the offset by the line height.
2432	if { $title != "" } {
2433	incr iy -$lineht
2434	}
2435
2436	# Make a swatch of the selected color
2437	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2438	return
2439	}
2440
2441	if { ![info exists _image(swatch)] } {
2442	set _image(swatch) [image create photo -width 24 -height 24]
2443	}
2444	set color [eval format "\#%02x%02x%02x" $pixel]
2445	$_image(swatch) put black -to 0 0 23 23
2446	$_image(swatch) put $color -to 1 1 22 22
2447
2448	# Compute the value of the point
2449	if { [info exists _limits($fname)] } {
2450	foreach { vmin vmax } $_limits($fname) break
2451	set t [expr 1.0 - (double($iy) / double($ih-1))]
2452	set value [expr $t * ($vmax - $vmin) + $vmin]
2453	} else {
2454	set value 0.0
2455	}
2456	set tipx [expr $x + 15]
2457	set tipy [expr $y - 5]
2458	.rappturetooltip configure -icon $_image(swatch)
2459	if { [info exists _isolines($y)] } {
2460	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2461	} else {
2462	Rappture::Tooltip::text $c [format "$title %g" $value]
2463	}
2464	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2465	}
2466
2467	# ----------------------------------------------------------------------
2468	# USAGE: _dropdown post
2469	# USAGE: _dropdown unpost
2470	# USAGE: _dropdown select
2471	#
2472	# Used internally to handle the dropdown list for this combobox. The
2473	# post/unpost options are invoked when the list is posted or unposted
2474	# to manage the relief of the controlling button. The select option
2475	# is invoked whenever there is a selection from the list, to assign
2476	# the value back to the gauge.
2477	# ----------------------------------------------------------------------
2478	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2479	set c $itk_component(view)
2480	switch -- $option {
2481	post {
2482	foreach { x1 y1 x2 y2 } [$c bbox title] break
2483	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2484	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2485	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2486	tk_popup $itk_component(fieldmenu) $x $y
2487	}
2488	activate {
2489	$c itemconfigure title -fill red
2490	}
2491	deactivate {
2492	$c itemconfigure title -fill $itk_option(-plotforeground)
2493	}
2494	invoke {
2495	$itk_component(field) value $_curFldLabel
2496	AdjustSetting field
2497	}
2498	default {
2499	error "bad option \"$option\": should be post, unpost, select"
2500	}
2501	}
2502	}
2503
2504	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2505	if { $_settings(isHeightmap) } {
2506	set val $_settings(heightmapScale)
2507	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2508	return $sval
2509	}
2510	set sval 0
2511	}
2512
2513
2514
2515

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