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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 3405

Last change on this file since 3405 was 3405, checked in by gah, 12 years ago
fix to streamlines to (again) display mulitple fields from a single VTK file
File size: 80.4 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 limits { dataobj }
61	public method sendto { string }
62	public method parameters {title args} {
63	# do nothing
64	}
65	public method scale {args}
66
67	protected method Connect {}
68	protected method CurrentDatasets {args}
69	protected method Disconnect {}
70	protected method DoResize {}
71	protected method DoContour {}
72	protected method DoRotate {}
73	protected method AdjustSetting {what {value ""}}
74	protected method AdjustMode {}
75	protected method InitSettings { args }
76	protected method Pan {option x y}
77	protected method Pick {x y}
78	protected method Rebuild {}
79	protected method ReceiveDataset { args }
80	protected method ReceiveImage { args }
81	protected method ReceiveLegend { colormap title min max size }
82	protected method Rotate {option x y}
83	protected method SendCmd {string}
84	protected method SendCmdNoWait {string}
85	protected method Zoom {option}
86
87	# The following methods are only used by this class.
88	private method BuildAxisTab {}
89	private method BuildCameraTab {}
90	private method BuildColormap { name colors }
91	private method ResetColormap { color }
92	private method BuildContourTab {}
93	private method BuildDownloadPopup { widget command }
94	private method Combo { option }
95	private method ConvertToVtkData { dataobj comp }
96	private method DrawLegend { title }
97	private method EnterLegend { x y }
98	private method EventuallyContour { numContours }
99	private method EventuallyRequestLegend {}
100	private method EventuallyResize { w h }
101	private method EventuallyRotate { q }
102	private method GetImage { args }
103	private method GetVtkData { args }
104	private method IsValidObject { dataobj }
105	private method LeaveLegend {}
106	private method MotionLegend { x y }
107	private method PanCamera {}
108	private method RequestLegend {}
109	private method SetCurrentColormap { stylelist }
110	private method SetLegendTip { x y }
111	private method SetObjectStyle { dataobj comp }
112	private method GetHeightmapScale {}
113	private method EnterIsoline { x y value }
114	private method LeaveIsoline {}
115	private method SetIsolineTip { x y value }
116	private method ResetAxes {}
117
118	private variable _arcball ""
119	private variable _outbuf ; # buffer for outgoing commands
120
121	private variable _dlist "" ; # list of data objects
122	private variable _obj2datasets
123	private variable _obj2ovride ; # maps dataobj => style override
124	private variable _comp2scale; # maps dataset to the heightmap scale.
125	private variable _datasets ; # contains all the dataobj-component
126	; # datasets in the server
127	private variable _colormaps ; # contains all the colormaps
128	; # in the server.
129
130	# The name of the current colormap used. The colormap is global to all
131	# heightmaps displayed.
132	private variable _currentColormap "" ;
133
134	private variable _click ; # info used for rotate operations
135	private variable _limits ; # Overall limits for all dataobjs
136	# using the viewer.
137	private variable _view ; # view params for 3D view
138	private variable _settings
139	private variable _initialStyle ""; # First found style in dataobjects.
140	private variable _reset 1; # Indicates if camera needs to be reset
141	# to starting position.
142	private variable _beforeConnect 1; # Indicates if camera needs to be reset
143	# to starting position.
144
145	private variable _first "" ; # This is the topmost dataset.
146	private variable _start 0
147	private variable _buffering 0
148	private variable _title ""
149
150	common _downloadPopup; # download options from popup
151	private common _hardcopy
152	private variable _width 0
153	private variable _height 0
154	private variable _resizePending 0
155	private variable _contourPending 0
156	private variable _rotatePending 0
157	private variable _legendPending 0
158	private variable _fieldNames {}
159	private variable _fields
160	private variable _curFldName "Default"
161	private variable _numContours 0
162	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
163	}
164
165	itk::usual VtkHeightmapViewer {
166	keep -background -foreground -cursor -font
167	keep -plotbackground -plotforeground -mode
168	}
169
170	# ----------------------------------------------------------------------
171	# CONSTRUCTOR
172	# ----------------------------------------------------------------------
173	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
174	set _serverType "vtkvis"
175
176	# Rebuild event
177	$_dispatcher register !rebuild
178	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
179
180	# Resize event
181	$_dispatcher register !resize
182	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
183
184	# Recontour event
185	$_dispatcher register !contour
186	$_dispatcher dispatch $this !contour "[itcl::code $this DoContour]; list"
187
188	# Rotate event
189	$_dispatcher register !rotate
190	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
191
192	# Legend event
193	$_dispatcher register !legend
194	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
195
196	#
197	# Populate parser with commands handle incoming requests
198	#
199	$_parser alias image [itcl::code $this ReceiveImage]
200	$_parser alias dataset [itcl::code $this ReceiveDataset]
201	$_parser alias legend [itcl::code $this ReceiveLegend]
202	$_parser alias viserror [itcl::code $this ReceiveError]
203
204	# Initialize the view to some default parameters.
205	array set _view {
206	qw 0.36
207	qx 0.25
208	qy 0.50
209	qz 0.70
210	zoom 1.0
211	xpan 0
212	ypan 0
213	ortho 1
214	}
215	set _arcball [blt::arcball create 100 100]
216	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
217	$_arcball quaternion $q
218
219	array set _settings [subst {
220	axisFlymode "static"
221	axisMinorTicks 1
222	stretchToFit 0
223	axisLabels 1
224	axisVisible 1
225	axisXGrid 0
226	axisYGrid 0
227	axisZGrid 0
228	colormapVisible 1
229	edges 0
230	field "Default"
231	heightmapOpacity 100
232	heightmapScale 50
233	isHeightmap 0
234	isolines 10
235	isolinesVisible 1
236	isolineColor black
237	legendVisible 1
238	lighting 0
239	outline 0
240	wireframe 0
241	}]
242
243	itk_component add view {
244	canvas $itk_component(plotarea).view \
245	-highlightthickness 0 -borderwidth 0
246	} {
247	usual
248	ignore -highlightthickness -borderwidth -background
249	}
250
251	itk_component add fieldmenu {
252	menu $itk_component(plotarea).menu \
253	-relief flat \
254	-tearoff no
255	} {
256	usual
257	ignore -background -foreground -relief -tearoff
258	}
259	set c $itk_component(view)
260	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
261	bind $c <4> [itcl::code $this Zoom in 0.25]
262	bind $c <5> [itcl::code $this Zoom out 0.25]
263	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
264	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
265	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
266	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
267	bind $c <Enter> "focus %W"
268	bind $c <Control-F1> [itcl::code $this ToggleConsole]
269
270	# Fix the scrollregion in case we go off screen
271	$c configure -scrollregion [$c bbox all]
272
273	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
274	set _map(cwidth) -1
275	set _map(cheight) -1
276	set _map(zoom) 1.0
277	set _map(original) ""
278
279	set f [$itk_component(main) component controls]
280	itk_component add reset {
281	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
282	-highlightthickness 0 \
283	-image [Rappture::icon reset-view] \
284	-command [itcl::code $this Zoom reset]
285	} {
286	usual
287	ignore -highlightthickness
288	}
289	pack $itk_component(reset) -side top -padx 2 -pady 2
290	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
291
292	itk_component add zoomin {
293	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
294	-highlightthickness 0 \
295	-image [Rappture::icon zoom-in] \
296	-command [itcl::code $this Zoom in]
297	} {
298	usual
299	ignore -highlightthickness
300	}
301	pack $itk_component(zoomin) -side top -padx 2 -pady 2
302	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
303
304	itk_component add zoomout {
305	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
306	-highlightthickness 0 \
307	-image [Rappture::icon zoom-out] \
308	-command [itcl::code $this Zoom out]
309	} {
310	usual
311	ignore -highlightthickness
312	}
313	pack $itk_component(zoomout) -side top -padx 2 -pady 2
314	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
315
316	itk_component add mode {
317	Rappture::PushButton $f.mode \
318	-onimage [Rappture::icon surface] \
319	-offimage [Rappture::icon surface] \
320	-variable [itcl::scope _settings(isHeightmap)] \
321	-command [itcl::code $this AdjustSetting isHeightmap] \
322	}
323	Rappture::Tooltip::for $itk_component(mode) \
324	"Toggle the surface/contour on/off"
325	pack $itk_component(mode) -padx 2 -pady 2
326
327	if { [catch {
328	BuildContourTab
329	BuildAxisTab
330	BuildCameraTab
331	} errs] != 0 } {
332	global errorInfo
333	puts stderr "errs=$errs errorInfo=$errorInfo"
334	}
335	set _image(legend) [image create photo]
336
337	# Hack around the Tk panewindow. The problem is that the requested
338	# size of the 3d view isn't set until an image is retrieved from
339	# the server. So the panewindow uses the tiny size.
340	set w 10000
341	pack forget $itk_component(view)
342	blt::table $itk_component(plotarea) \
343	0,0 $itk_component(view) -fill both -reqwidth $w
344	blt::table configure $itk_component(plotarea) c1 -resize none
345
346	# Bindings for panning via mouse
347	bind $itk_component(view) <ButtonPress-2> \
348	[itcl::code $this Pan click %x %y]
349	bind $itk_component(view) <B2-Motion> \
350	[itcl::code $this Pan drag %x %y]
351	bind $itk_component(view) <ButtonRelease-2> \
352	[itcl::code $this Pan release %x %y]
353
354	bind $itk_component(view) <ButtonRelease-3> \
355	[itcl::code $this Pick %x %y]
356
357	# Bindings for panning via keyboard
358	bind $itk_component(view) <KeyPress-Left> \
359	[itcl::code $this Pan set -10 0]
360	bind $itk_component(view) <KeyPress-Right> \
361	[itcl::code $this Pan set 10 0]
362	bind $itk_component(view) <KeyPress-Up> \
363	[itcl::code $this Pan set 0 -10]
364	bind $itk_component(view) <KeyPress-Down> \
365	[itcl::code $this Pan set 0 10]
366	bind $itk_component(view) <Shift-KeyPress-Left> \
367	[itcl::code $this Pan set -2 0]
368	bind $itk_component(view) <Shift-KeyPress-Right> \
369	[itcl::code $this Pan set 2 0]
370	bind $itk_component(view) <Shift-KeyPress-Up> \
371	[itcl::code $this Pan set 0 -2]
372	bind $itk_component(view) <Shift-KeyPress-Down> \
373	[itcl::code $this Pan set 0 2]
374
375	# Bindings for zoom via keyboard
376	bind $itk_component(view) <KeyPress-Prior> \
377	[itcl::code $this Zoom out]
378	bind $itk_component(view) <KeyPress-Next> \
379	[itcl::code $this Zoom in]
380
381	bind $itk_component(view) <Enter> "focus $itk_component(view)"
382
383	if {[string equal "x11" [tk windowingsystem]]} {
384	# Bindings for zoom via mouse
385	bind $itk_component(view) <4> [itcl::code $this Zoom out]
386	bind $itk_component(view) <5> [itcl::code $this Zoom in]
387	}
388
389	set _image(download) [image create photo]
390
391	eval itk_initialize $args
392	Connect
393	set _beforeConnect 0
394	}
395
396	# ----------------------------------------------------------------------
397	# DESTRUCTOR
398	# ----------------------------------------------------------------------
399	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
400	Disconnect
401	image delete $_image(plot)
402	image delete $_image(download)
403	catch { blt::arcball destroy $_arcball }
404	}
405
406	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
407	if { $_width < 2 } {
408	set _width 500
409	}
410	if { $_height < 2 } {
411	set _height 500
412	}
413	set _start [clock clicks -milliseconds]
414	SendCmd "screen size [expr $_width - 20] $_height"
415	EventuallyRequestLegend
416	set _resizePending 0
417	}
418
419	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
420	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
421	SendCmd "camera orient $q"
422	set _rotatePending 0
423	}
424
425	itcl::body Rappture::VtkHeightmapViewer::DoContour {} {
426	foreach dataset [CurrentDatasets -all] {
427	foreach {dataobj comp} [split $dataset -] break
428	#SendCmd "heightmap numcontours $_numContours $dataset"
429	}
430	set _contourPending 0
431	}
432
433	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
434	if { !$_legendPending } {
435	set _legendPending 1
436	$_dispatcher event -idle !legend
437	}
438	}
439
440	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
441	set _width $w
442	set _height $h
443	$_arcball resize $w $h
444	if { !$_resizePending } {
445	set _resizePending 1
446	$_dispatcher event -after 400 !resize
447	}
448	}
449
450	itcl::body Rappture::VtkHeightmapViewer::EventuallyContour { numContours } {
451	set _numContours $numContours
452	if { !$_contourPending } {
453	set _contourPending 1
454	$_dispatcher event -after 600 !contour
455	}
456	}
457
458	set rotate_delay 100
459
460	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
461	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
462	if { !$_rotatePending } {
463	set _rotatePending 1
464	global rotate_delay
465	$_dispatcher event -after $rotate_delay !rotate
466	}
467	}
468
469	# ----------------------------------------------------------------------
470	# USAGE: add <dataobj> ?<settings>?
471	#
472	# Clients use this to add a data object to the plot. The optional
473	# <settings> are used to configure the plot. Allowed settings are
474	# -color, -brightness, -width, -linestyle, and -raise.
475	# ----------------------------------------------------------------------
476	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
477	array set params {
478	-color auto
479	-width 1
480	-linestyle solid
481	-brightness 0
482	-raise 0
483	-description ""
484	-param ""
485	-type ""
486	}
487	array set params $settings
488	set params(-description) ""
489	set params(-param) ""
490	foreach {opt val} $settings {
491	if {![info exists params($opt)]} {
492	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
493	}
494	set params($opt) $val
495	}
496	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
497	# can't handle -autocolors yet
498	set params(-color) white
499	}
500	set pos [lsearch -exact $dataobj $_dlist]
501	if {$pos < 0} {
502	lappend _dlist $dataobj
503	}
504	set _obj2ovride($dataobj-color) $params(-color)
505	set _obj2ovride($dataobj-width) $params(-width)
506	set _obj2ovride($dataobj-raise) $params(-raise)
507	$_dispatcher event -idle !rebuild
508	}
509
510
511	# ----------------------------------------------------------------------
512	# USAGE: delete ?<dataobj1> <dataobj2> ...?
513	#
514	# Clients use this to delete a dataobj from the plot. If no dataobjs
515	# are specified, then all dataobjs are deleted. No data objects are
516	# deleted. They are only removed from the display list.
517	#
518	# ----------------------------------------------------------------------
519	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
520	if { [llength $args] == 0} {
521	set args $_dlist
522	}
523	# Delete all specified dataobjs
524	set changed 0
525	foreach dataobj $args {
526	set pos [lsearch -exact $_dlist $dataobj]
527	if { $pos < 0 } {
528	continue; # Don't know anything about it.
529	}
530	# Remove it from the dataobj list.
531	set _dlist [lreplace $_dlist $pos $pos]
532	array unset _obj2ovride $dataobj-*
533	array unset _settings $dataobj-*
534	# Append to the end of the dataobj list.
535	#lappend _dlist $dataobj
536	set changed 1
537	}
538	# If anything changed, then rebuild the plot
539	if { $changed } {
540	$_dispatcher event -idle !rebuild
541	}
542	}
543
544	# ----------------------------------------------------------------------
545	# USAGE: get ?-objects?
546	# USAGE: get ?-visible?
547	# USAGE: get ?-image view?
548	#
549	# Clients use this to query the list of objects being plotted, in
550	# order from bottom to top of this result. The optional "-image"
551	# flag can also request the internal images being shown.
552	# ----------------------------------------------------------------------
553	itcl::body Rappture::VtkHeightmapViewer::get {args} {
554	if {[llength $args] == 0} {
555	set args "-objects"
556	}
557
558	set op [lindex $args 0]
559	switch -- $op {
560	"-objects" {
561	# put the dataobj list in order according to -raise options
562	set dlist {}
563	foreach dataobj $_dlist {
564	if { ![IsValidObject $dataobj] } {
565	continue
566	}
567	if {[info exists _obj2ovride($dataobj-raise)] &&
568	$_obj2ovride($dataobj-raise)} {
569	set dlist [linsert $dlist 0 $dataobj]
570	} else {
571	lappend dlist $dataobj
572	}
573	}
574	return $dlist
575	}
576	"-visible" {
577	set dlist {}
578	foreach dataobj $_dlist {
579	if { ![IsValidObject $dataobj] } {
580	continue
581	}
582	if { ![info exists _obj2ovride($dataobj-raise)] } {
583	# No setting indicates that the object isn't visible.
584	continue
585	}
586	# Otherwise use the -raise parameter to put the object to
587	# the front of the list.
588	if { $_obj2ovride($dataobj-raise) } {
589	set dlist [linsert $dlist 0 $dataobj]
590	} else {
591	lappend dlist $dataobj
592	}
593	}
594	return $dlist
595	}
596	-image {
597	if {[llength $args] != 2} {
598	error "wrong # args: should be \"get -image view\""
599	}
600	switch -- [lindex $args end] {
601	view {
602	return $_image(plot)
603	}
604	default {
605	error "bad image name \"[lindex $args end]\": should be view"
606	}
607	}
608	}
609	default {
610	error "bad option \"$op\": should be -objects or -image"
611	}
612	}
613	}
614
615	# ----------------------------------------------------------------------
616	# USAGE: scale ?<data1> <data2> ...?
617	#
618	# Sets the default limits for the overall plot according to the
619	# limits of the data for all of the given <data> objects. This
620	# accounts for all objects--even those not showing on the screen.
621	# Because of this, the limits are appropriate for all objects as
622	# the user scans through data in the ResultSet viewer.
623	# ----------------------------------------------------------------------
624	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
625	foreach dataobj $args {
626	array set bounds [limits $dataobj]
627	foreach axis { x y v } {
628	foreach {min max} $bounds($axis) break
629	if { ![info exists _limits($axis)] } {
630	set _limits($axis) [list $min $max]
631	continue
632	}
633	foreach {amin amax} $_limits($axis) break
634	if { $amin > $min } {
635	set amin $min
636	}
637	if { $amax < $max } {
638	set amax $max
639	}
640	set _limits($axis) [list $amin $amax]
641	}
642	}
643	}
644
645	# ----------------------------------------------------------------------
646	# USAGE: download coming
647	# USAGE: download controls <downloadCommand>
648	# USAGE: download now
649	#
650	# Clients use this method to create a downloadable representation
651	# of the plot. Returns a list of the form {ext string}, where
652	# "ext" is the file extension (indicating the type of data) and
653	# "string" is the data itself.
654	# ----------------------------------------------------------------------
655	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
656	switch $option {
657	coming {
658	if {[catch {
659	blt::winop snap $itk_component(plotarea) $_image(download)
660	}]} {
661	$_image(download) configure -width 1 -height 1
662	$_image(download) put #000000
663	}
664	}
665	controls {
666	set popup .vtkviewerdownload
667	if { ![winfo exists .vtkviewerdownload] } {
668	set inner [BuildDownloadPopup $popup [lindex $args 0]]
669	} else {
670	set inner [$popup component inner]
671	}
672	set _downloadPopup(image_controls) $inner.image_frame
673	set num [llength [get]]
674	set num [expr {($num == 1) ? "1 result" : "$num results"}]
675	set word [Rappture::filexfer::label downloadWord]
676	$inner.summary configure -text "$word $num in the following format:"
677	update idletasks ;# Fix initial sizes
678	return $popup
679	}
680	now {
681	set popup .vtkviewerdownload
682	if {[winfo exists .vtkviewerdownload]} {
683	$popup deactivate
684	}
685	switch -- $_downloadPopup(format) {
686	"image" {
687	return [$this GetImage [lindex $args 0]]
688	}
689	"vtk" {
690	return [$this GetVtkData [lindex $args 0]]
691	}
692	}
693	return ""
694	}
695	default {
696	error "bad option \"$option\": should be coming, controls, now"
697	}
698	}
699	}
700
701	# ----------------------------------------------------------------------
702	# USAGE: Connect ?<host:port>,<host:port>...?
703	#
704	# Clients use this method to establish a connection to a new
705	# server, or to reestablish a connection to the previous server.
706	# Any existing connection is automatically closed.
707	# ----------------------------------------------------------------------
708	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
709	global readyForNextFrame
710	set readyForNextFrame 1
711	set _reset 1
712	set _hosts [GetServerList "vtkvis"]
713	if { "" == $_hosts } {
714	return 0
715	}
716	set result [VisViewer::Connect $_hosts]
717	if { $result } {
718	set w [winfo width $itk_component(view)]
719	set h [winfo height $itk_component(view)]
720	EventuallyResize $w $h
721	}
722	return $result
723	}
724
725	#
726	# isconnected --
727	#
728	# Indicates if we are currently connected to the visualization server.
729	#
730	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
731	return [VisViewer::IsConnected]
732	}
733
734	#
735	# disconnect --
736	#
737	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
738	Disconnect
739	set _reset 1
740	}
741
742	#
743	# Disconnect --
744	#
745	# Clients use this method to disconnect from the current rendering
746	# server.
747	#
748	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
749	VisViewer::Disconnect
750
751	$_dispatcher cancel !rebuild
752	$_dispatcher cancel !resize
753	$_dispatcher cancel !contour
754	$_dispatcher cancel !rotate
755	$_dispatcher cancel !legend
756	# disconnected -- no more data sitting on server
757	set _outbuf ""
758	array unset _datasets
759	array unset _data
760	array unset _colormaps
761	array unset _obj2datasets
762	global readyForNextFrame
763	set readyForNextFrame 1
764	}
765
766	#
767	# sendto --
768	#
769	itcl::body Rappture::VtkHeightmapViewer::sendto { bytes } {
770	SendBytes "$bytes\n"
771	}
772
773	#
774	# SendCmd
775	#
776	# Send commands off to the rendering server. If we're currently
777	# sending data objects to the server, buffer the commands to be
778	# sent later.
779	#
780	itcl::body Rappture::VtkHeightmapViewer::SendCmd {string} {
781	if { $_buffering } {
782	append _outbuf $string "\n"
783	} else {
784	SendBytes "$string\n"
785	}
786	}
787
788	#
789	# SendCmdNoWait
790	#
791	# Send commands off to the rendering server. If we're currently
792	# sending data objects to the server, buffer the commands to be
793	# sent later.
794	#
795	itcl::body Rappture::VtkHeightmapViewer::SendCmdNoWait {string} {
796	if { $_buffering } {
797	append _outbuf $string "\n"
798	} else {
799	SendBytes "$string\n"
800	}
801	}
802
803	# ----------------------------------------------------------------------
804	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
805	#
806	# Invoked automatically whenever the "image" command comes in from
807	# the rendering server. Indicates that binary image data with the
808	# specified <size> will follow.
809	# ----------------------------------------------------------------------
810	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
811	global readyForNextFrame
812	set readyForNextFrame 1
813	array set info {
814	-token "???"
815	-bytes 0
816	-type image
817	}
818	array set info $args
819	set bytes [ReceiveBytes $info(-bytes)]
820	if { $info(-type) == "image" } {
821	if 0 {
822	set f [open "last.ppm" "w"]
823	puts $f $bytes
824	close $f
825	}
826	$_image(plot) configure -data $bytes
827	set time [clock seconds]
828	set date [clock format $time]
829	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
830	if { $_start > 0 } {
831	set finish [clock clicks -milliseconds]
832	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
833	set _start 0
834	}
835	} elseif { $info(type) == "print" } {
836	set tag $this-print-$info(-token)
837	set _hardcopy($tag) $bytes
838	}
839	}
840
841	#
842	# ReceiveDataset --
843	#
844	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
845	if { ![isconnected] } {
846	return
847	}
848	set option [lindex $args 0]
849	switch -- $option {
850	"scalar" {
851	set option [lindex $args 1]
852	switch -- $option {
853	"world" {
854	foreach { x y z value tag } [lrange $args 2 end] break
855	}
856	"pixel" {
857	foreach { x y value tag } [lrange $args 2 end] break
858	}
859	}
860	}
861	"vector" {
862	set option [lindex $args 1]
863	switch -- $option {
864	"world" {
865	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
866	}
867	"pixel" {
868	foreach { x y vx vy vz tag } [lrange $args 2 end] break
869	}
870	}
871	}
872	"names" {
873	foreach { name } [lindex $args 1] {
874	#puts stderr "Dataset: $name"
875	}
876	}
877	default {
878	error "unknown dataset option \"$option\" from server"
879	}
880	}
881	}
882
883	# ----------------------------------------------------------------------
884	# USAGE: Rebuild
885	#
886	# Called automatically whenever something changes that affects the
887	# data in the widget. Clears any existing data and rebuilds the
888	# widget to display new data.
889	# ----------------------------------------------------------------------
890	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
891	set w [winfo width $itk_component(view)]
892	set h [winfo height $itk_component(view)]
893	if { $w < 2 \|\| $h < 2 } {
894	$_dispatcher event -idle !rebuild
895	return
896	}
897
898	set _buffering 1
899	# Turn on buffering of commands to the server. We don't want to
900	# be preempted by a server disconnect/reconnect (which automatically
901	# generates a new call to Rebuild).
902	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
903	set _width $w
904	set _height $h
905	$_arcball resize $w $h
906	DoResize
907	if { $_settings(stretchToFit) } {
908	Adjustsetting stretchToFit
909	}
910	}
911	if { $_reset } {
912	if 1 {
913	# Tell the server the name of the tool, the version, and dataset
914	# that we are rendering. Have to do it here because we don't know
915	# what data objects are using the renderer until be get here.
916	global env
917
918	set info {}
919	set user "???"
920	if { [info exists env(USER)] } {
921	set user $env(USER)
922	}
923	set session "???"
924	if { [info exists env(SESSION)] } {
925	set session $env(SESSION)
926	}
927	lappend info "hub" [exec hostname]
928	lappend info "client" "vtkheightmapviewer"
929	lappend info "user" $user
930	lappend info "session" $session
931	SendCmd "clientinfo [list $info]"
932	}
933	InitSettings isHeightmap background
934	#
935	# Reset the camera and other view parameters
936	#
937	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
938	SendCmd "axis lrot z 90"
939	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
940	$_arcball quaternion $q
941	if {$_settings(isHeightmap) } {
942	SendCmd "camera reset"
943	if { $_view(ortho)} {
944	SendCmd "camera mode ortho"
945	} else {
946	SendCmd "camera mode persp"
947	}
948	}
949	DoRotate
950	PanCamera
951	}
952	set _first ""
953
954	#SendCmd "imgflush"
955
956	set _first ""
957	# Start off with no datasets are visible.
958	SendCmd "dataset visible 0"
959	set scale [GetHeightmapScale]
960	foreach dataobj [get -objects] {
961	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
962	set _first $dataobj
963	}
964	scale $dataobj
965	set _obj2datasets($dataobj) ""
966	foreach comp [$dataobj components] {
967	set tag $dataobj-$comp
968	if { ![info exists _datasets($tag)] } {
969	set bytes [$dataobj vtkdata $comp]
970	if 1 {
971	set f [open /tmp/vtkheightmap.vtk "w"]
972	puts $f $bytes
973	close $f
974	}
975	set length [string length $bytes]
976	if 1 {
977	set info {}
978	lappend info "tool_id" [$dataobj hints toolId]
979	lappend info "tool_name" [$dataobj hints toolName]
980	lappend info "tool_version" [$dataobj hints toolRevision]
981	lappend info "tool_title" [$dataobj hints toolTitle]
982	lappend info "dataset_label" [$dataobj hints label]
983	lappend info "dataset_size" $length
984	lappend info "dataset_tag" $tag
985	SendCmd [list "clientinfo" $info]
986	}
987	append _outbuf "dataset add $tag data follows $length\n"
988	append _outbuf $bytes
989	set _datasets($tag) 1
990	SetObjectStyle $dataobj $comp
991	}
992	lappend _obj2datasets($dataobj) $tag
993	if { [info exists _obj2ovride($dataobj-raise)] } {
994	SendCmd "heightmap visible 1 $tag"
995	}
996	if { ![info exists _comp2scale($tag)] \|\|
997	$_comp2scale($tag) != $scale } {
998	SendCmd "heightmap heightscale $scale $tag"
999	set _comp2scale($tag) $scale
1000	}
1001	}
1002	}
1003	if { $_first != "" } {
1004	$itk_component(field) choices delete 0 end
1005	$itk_component(fieldmenu) delete 0 end
1006	array unset _fields
1007	foreach cname [$_first components] {
1008	foreach fname [$_first fieldnames $cname] {
1009	if { [info exists _fields($fname)] } {
1010	continue
1011	}
1012	foreach { label units components } \
1013	[$_first fieldinfo $fname] break
1014	SendCmd "dataset maprange explicit $_limits(v) $fname"
1015	$itk_component(field) choices insert end "$fname" "$label"
1016	$itk_component(fieldmenu) add radiobutton -label "$label" \
1017	-value $label -variable [itcl::scope _curFldName] \
1018	-selectcolor red \
1019	-activebackground $itk_option(-plotbackground) \
1020	-activeforeground $itk_option(-plotforeground) \
1021	-font "Arial 8" \
1022	-command [itcl::code $this Combo invoke]
1023	set _fields($fname) [list $label $units $components]
1024	set _curFldName $fname
1025	}
1026	}
1027	if { [array size _fields] == 1 } {
1028	set _curFldName [array names _fields]
1029	if { $_curFldName == "" } {
1030	puts stderr "no default name from field"
1031	set _curFldName "Default"
1032	}
1033	}
1034	$itk_component(field) value $_curFldName
1035	}
1036	InitSettings stretchToFit
1037
1038	if { $_reset } {
1039	SendCmd "axis tickpos outside"
1040	foreach axis { x y z } {
1041	SendCmd "axis lformat $axis %g"
1042	}
1043	foreach axis { x y z } {
1044	set label [$_first hints ${axis}label]
1045	if { $label == "" } {
1046	if {$axis == "z"} {
1047	if { $_curFldName == "component" } {
1048	set label [string toupper $axis]
1049	} else {
1050	set label [lindex $_fields($_curFldName) 0]
1051	}
1052	} else {
1053	set label [string toupper $axis]
1054	}
1055	}
1056	# May be a space in the axis label.
1057	SendCmd [list axis name $axis $label]
1058
1059	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1060	set units [lindex $_fields($_curFldName) 1]
1061	} else {
1062	set units [$_first hints ${axis}units]
1063	}
1064	if { $units != "" } {
1065	# May be a space in the axis units.
1066	SendCmd [list axis units $axis $units]
1067	}
1068	}
1069	#
1070	# Reset the camera and other view parameters
1071	#
1072	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
1073	ResetAxes
1074	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1075	$_arcball quaternion $q
1076	if {$_settings(isHeightmap) } {
1077	SendCmd "camera reset"
1078	if { $_view(ortho)} {
1079	SendCmd "camera mode ortho"
1080	} else {
1081	SendCmd "camera mode persp"
1082	}
1083	}
1084	DoRotate
1085	PanCamera
1086	InitSettings axisXGrid axisYGrid axisZGrid \
1087	axisVisible axisLabels
1088	InitSettings heightmapOpacity \
1089	heightmapScale lighting \
1090	colormap field outline \
1091	edges heightmapOpacity wireframe
1092	set _reset 0
1093	}
1094	global readyForNextFrame
1095	set readyForNextFrame 0; # Don't advance to the next frame
1096	set _buffering 0; # Turn off buffering.
1097
1098	# Actually write the commands to the server socket. If it fails, we don't
1099	# care. We're finished here.
1100	blt::busy hold $itk_component(hull)
1101	sendto $_outbuf;
1102	blt::busy release $itk_component(hull)
1103	set _outbuf ""; # Clear the buffer.
1104	}
1105
1106	# ----------------------------------------------------------------------
1107	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1108	#
1109	# Returns a list of server IDs for the current datasets being displayed. This
1110	# is normally a single ID, but it might be a list of IDs if the current data
1111	# object has multiple components.
1112	# ----------------------------------------------------------------------
1113	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1114	set flag [lindex $args 0]
1115	switch -- $flag {
1116	"-all" {
1117	if { [llength $args] > 1 } {
1118	error "CurrentDatasets: can't specify dataobj after \"-all\""
1119	}
1120	set dlist [get -objects]
1121	}
1122	"-visible" {
1123	if { [llength $args] > 1 } {
1124	set dlist {}
1125	set args [lrange $args 1 end]
1126	foreach dataobj $args {
1127	if { [info exists _obj2ovride($dataobj-raise)] } {
1128	lappend dlist $dataobj
1129	}
1130	}
1131	} else {
1132	set dlist [get -visible]
1133	}
1134	}
1135	default {
1136	set dlist $args
1137	}
1138	}
1139	set rlist ""
1140	foreach dataobj $dlist {
1141	foreach comp [$dataobj components] {
1142	set tag $dataobj-$comp
1143	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1144	lappend rlist $tag
1145	}
1146	}
1147	}
1148	return $rlist
1149	}
1150
1151	# ----------------------------------------------------------------------
1152	# USAGE: Zoom in
1153	# USAGE: Zoom out
1154	# USAGE: Zoom reset
1155	#
1156	# Called automatically when the user clicks on one of the zoom
1157	# controls for this widget. Changes the zoom for the current view.
1158	# ----------------------------------------------------------------------
1159	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1160	switch -- $option {
1161	"in" {
1162	set _view(zoom) [expr {$_view(zoom)*1.25}]
1163	SendCmd "camera zoom $_view(zoom)"
1164	}
1165	"out" {
1166	set _view(zoom) [expr {$_view(zoom)*0.8}]
1167	SendCmd "camera zoom $_view(zoom)"
1168	}
1169	"reset" {
1170	array set _view {
1171	qw 0.36
1172	qx 0.25
1173	qy 0.50
1174	qz 0.70
1175	zoom 1.0
1176	xpan 0
1177	ypan 0
1178	}
1179	SendCmd "camera reset all"
1180	if { $_first != "" } {
1181	set location [$_first hints camera]
1182	if { $location != "" } {
1183	array set _view $location
1184	}
1185	}
1186	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1187	$_arcball quaternion $q
1188	DoRotate
1189	}
1190	}
1191	}
1192
1193	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1194	set x $_view(xpan)
1195	set y $_view(ypan)
1196	SendCmd "camera pan $x $y"
1197	}
1198
1199
1200	# ----------------------------------------------------------------------
1201	# USAGE: Rotate click <x> <y>
1202	# USAGE: Rotate drag <x> <y>
1203	# USAGE: Rotate release <x> <y>
1204	#
1205	# Called automatically when the user clicks/drags/releases in the
1206	# plot area. Moves the plot according to the user's actions.
1207	# ----------------------------------------------------------------------
1208	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1209	switch -- $option {
1210	"click" {
1211	$itk_component(view) configure -cursor fleur
1212	set _click(x) $x
1213	set _click(y) $y
1214	}
1215	"drag" {
1216	if {[array size _click] == 0} {
1217	Rotate click $x $y
1218	} else {
1219	set w [winfo width $itk_component(view)]
1220	set h [winfo height $itk_component(view)]
1221	if {$w <= 0 \|\| $h <= 0} {
1222	return
1223	}
1224
1225	if {[catch {
1226	# this fails sometimes for no apparent reason
1227	set dx [expr {double($x-$_click(x))/$w}]
1228	set dy [expr {double($y-$_click(y))/$h}]
1229	}]} {
1230	return
1231	}
1232	if { $dx == 0 && $dy == 0 } {
1233	return
1234	}
1235	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1236	EventuallyRotate $q
1237	set _click(x) $x
1238	set _click(y) $y
1239	}
1240	}
1241	"release" {
1242	Rotate drag $x $y
1243	$itk_component(view) configure -cursor ""
1244	catch {unset _click}
1245	}
1246	default {
1247	error "bad option \"$option\": should be click, drag, release"
1248	}
1249	}
1250	}
1251
1252	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1253	foreach tag [CurrentDatasets -visible] {
1254	SendCmd "dataset getscalar pixel $x $y $tag"
1255	}
1256	}
1257
1258	# ----------------------------------------------------------------------
1259	# USAGE: $this Pan click x y
1260	# $this Pan drag x y
1261	# $this Pan release x y
1262	#
1263	# Called automatically when the user clicks on one of the zoom
1264	# controls for this widget. Changes the zoom for the current view.
1265	# ----------------------------------------------------------------------
1266	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1267	switch -- $option {
1268	"set" {
1269	set w [winfo width $itk_component(view)]
1270	set h [winfo height $itk_component(view)]
1271	set x [expr $x / double($w)]
1272	set y [expr $y / double($h)]
1273	set _view(xpan) [expr $_view(xpan) + $x]
1274	set _view(ypan) [expr $_view(ypan) + $y]
1275	PanCamera
1276	return
1277	}
1278	"click" {
1279	set _click(x) $x
1280	set _click(y) $y
1281	$itk_component(view) configure -cursor hand1
1282	}
1283	"drag" {
1284	if { ![info exists _click(x)] } {
1285	set _click(x) $x
1286	}
1287	if { ![info exists _click(y)] } {
1288	set _click(y) $y
1289	}
1290	set w [winfo width $itk_component(view)]
1291	set h [winfo height $itk_component(view)]
1292	set dx [expr ($_click(x) - $x)/double($w)]
1293	set dy [expr ($_click(y) - $y)/double($h)]
1294	set _click(x) $x
1295	set _click(y) $y
1296	set _view(xpan) [expr $_view(xpan) - $dx]
1297	set _view(ypan) [expr $_view(ypan) - $dy]
1298	PanCamera
1299	}
1300	"release" {
1301	Pan drag $x $y
1302	$itk_component(view) configure -cursor ""
1303	}
1304	default {
1305	error "unknown option \"$option\": should set, click, drag, or release"
1306	}
1307	}
1308	}
1309
1310	# ----------------------------------------------------------------------
1311	# USAGE: InitSettings <what> ?<value>?
1312	#
1313	# Used internally to update rendering settings whenever parameters
1314	# change in the popup settings panel. Sends the new settings off
1315	# to the back end.
1316	# ----------------------------------------------------------------------
1317	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1318	foreach spec $args {
1319	if { [info exists _settings($_first-$spec)] } {
1320	# Reset global setting with dataobj specific setting
1321	set _settings($spec) $_settings($_first-$spec)
1322	}
1323	AdjustSetting $spec
1324	}
1325	}
1326
1327	#
1328	# AdjustSetting --
1329	#
1330	# Changes/updates a specific setting in the widget. There are
1331	# usually user-setable option. Commands are sent to the render
1332	# server.
1333	#
1334	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1335	if { $_beforeConnect } {
1336	return
1337	}
1338	switch -- $what {
1339	"heightmapOpacity" {
1340	set val $_settings(heightmapOpacity)
1341	set sval [expr { 0.01 * double($val) }]
1342	foreach dataset [CurrentDatasets -all] {
1343	SendCmd "heightmap opacity $sval $dataset"
1344	}
1345	}
1346	"wireframe" {
1347	set bool $_settings(wireframe)
1348	foreach dataset [CurrentDatasets -all] {
1349	SendCmd "heightmap wireframe $bool $dataset"
1350	}
1351	}
1352	"colormapVisible" {
1353	set bool $_settings(colormapVisible)
1354	foreach dataset [CurrentDatasets -all] {
1355	SendCmd "heightmap surface $bool $dataset"
1356	}
1357	}
1358	"isolinesVisible" {
1359	set bool $_settings(isolinesVisible)
1360	foreach dataset [CurrentDatasets -all] {
1361	SendCmd "heightmap isolines $bool $dataset"
1362	}
1363	}
1364	"lighting" {
1365	if { $_settings(isHeightmap) } {
1366	set bool $_settings(lighting)
1367	SendCmd "heightmap lighting $bool"
1368	} else {
1369	SendCmd "heightmap lighting 0"
1370	}
1371	}
1372	"edges" {
1373	set bool $_settings(edges)
1374	foreach dataset [CurrentDatasets -all] {
1375	SendCmd "heightmap edges $bool $dataset"
1376	}
1377	}
1378	"axisVisible" {
1379	set bool $_settings(axisVisible)
1380	SendCmd "axis visible all $bool"
1381	}
1382	"axisLabels" {
1383	set bool $_settings(axisLabels)
1384	SendCmd "axis labels all $bool"
1385	}
1386	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1387	set axis [string tolower [string range $what 4 4]]
1388	set bool $_settings($what)
1389	SendCmd "axis grid $axis $bool"
1390	}
1391	"axisFlymode" {
1392	set mode [$itk_component(axisflymode) value]
1393	set mode [$itk_component(axisflymode) translate $mode]
1394	set _settings($what) $mode
1395	SendCmd "axis flymode $mode"
1396	}
1397	"axisMinorTicks" {
1398	set bool $_settings(axisMinorTicks)
1399	foreach axis { x y z } {
1400	SendCmd "axis minticks ${axis} $bool"
1401	}
1402	}
1403	"isolines" {
1404	set n $_settings($what)
1405	EventuallyContour $n
1406	}
1407	"isolinesVisible" {
1408	set bool $_settings($what)
1409	foreach dataset [CurrentDatasets -all] {
1410	SendCmd "heightmap isolines $bool $dataset"
1411	}
1412	}
1413	"colormapVisible" {
1414	set bool $_settings($what)
1415	foreach dataset [CurrentDatasets -all] {
1416	SendCmd "heightmap surface $bool $dataset"
1417	}
1418	}
1419	"background" {
1420	set bgcolor [$itk_component(background) value]
1421	array set fgcolors {
1422	"black" "white"
1423	"white" "black"
1424	"grey" "black"
1425	}
1426	configure -plotbackground $bgcolor \
1427	-plotforeground $fgcolors($bgcolor)
1428	$itk_component(view) delete "legend"
1429	DrawLegend $_curFldName
1430	}
1431	"isolineColor" {
1432	set color [$itk_component(isolinecolor) value]
1433	if { $color == "none" } {
1434	if { $_settings(isolinesVisible) } {
1435	SendCmd "heightmap isolines 0"
1436	set _settings(isolinesVisible) 0
1437	}
1438	} else {
1439	if { !$_settings(isolinesVisible) } {
1440	SendCmd "heightmap isolines 1"
1441	set _settings(isolinesVisible) 1
1442	}
1443	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1444	}
1445	DrawLegend $_curFldName
1446	}
1447	"colormap" {
1448	set color [$itk_component(colormap) value]
1449	set _settings(colormap) $color
1450	if { $color == "none" } {
1451	if { $_settings(colormapVisible) } {
1452	SendCmd "heightmap surface 0"
1453	set _settings(colormapVisible) 0
1454	}
1455	} else {
1456	if { !$_settings(colormapVisible) } {
1457	SendCmd "heightmap surface 1"
1458	set _settings(colormapVisible) 1
1459	}
1460	ResetColormap $color
1461	SendCmd "heightmap colormap $_currentColormap"
1462	}
1463	SendCmdNoWait "heightmap colormode scalar $_curFldName"
1464	SendCmdNoWait "dataset scalar $_curFldName"
1465	EventuallyRequestLegend
1466	}
1467	"heightmapOpacity" {
1468	set val $_settings(heightmapOpacity)
1469	set sval [expr { 0.01 * double($val) }]
1470	foreach dataset [CurrentDatasets -all] {
1471	SendCmd "heightmap opacity $sval $dataset"
1472	}
1473	}
1474	"heightmapScale" {
1475	if { $_settings(isHeightmap) } {
1476	set scale [GetHeightmapScale]
1477	foreach dataset [CurrentDatasets -all] {
1478	SendCmd "heightmap heightscale $scale $dataset"
1479	set _comp2scale($dataset) $scale
1480	}
1481	ResetAxes
1482	}
1483	}
1484	"lighting" {
1485	if { $_settings(isHeightmap) } {
1486	set bool $_settings(lighting)
1487	SendCmd "heightmap lighting $bool"
1488	} else {
1489	SendCmd "heightmap lighting 0"
1490	}
1491	}
1492	"field" {
1493	set new [$itk_component(field) value]
1494	set value [$itk_component(field) translate $new]
1495	set _settings(field) $value
1496	if { [info exists _fields($new)] } {
1497	set _colorMode scalar
1498	set _curFldName $new
1499	} else {
1500	puts stderr "unknown field \"$new\""
1501	return
1502	}
1503	EventuallyRequestLegend
1504	}
1505	"stretchToFit" {
1506	set bool $_settings(stretchToFit)
1507	if { $bool } {
1508	set heightScale [GetHeightmapScale]
1509	if {$heightScale == 0} {
1510	SendCmd "camera aspect window"
1511	} else {
1512	SendCmd "camera aspect square"
1513	}
1514	} else {
1515	SendCmd "camera aspect native"
1516	}
1517	}
1518	"outline" {
1519	set bool $_settings(outline)
1520	SendCmd "dataset outline $bool"
1521	}
1522	"isHeightmap" {
1523	set bool $_settings(isHeightmap)
1524	if { $bool } {
1525	$itk_component(lighting) configure -state normal
1526	} else {
1527	$itk_component(lighting) configure -state disabled
1528	}
1529	set _settings(lighting) $bool
1530	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1531	if { $bool } {
1532	set _settings(heightmapScale) 50
1533	} else {
1534	set _settings(heightmapScale) 50
1535	}
1536	SendCmd "heightmap lighting $bool"
1537	set scale [GetHeightmapScale]
1538	foreach dataset [CurrentDatasets -all] {
1539	SendCmd "heightmap heightscale $scale $dataset"
1540	set _comp2scale($dataset) $scale
1541	}
1542	if {$_settings(stretchToFit)} {
1543	if {$scale == 0} {
1544	SendCmd "camera aspect window"
1545	} else {
1546	SendCmd "camera aspect square"
1547	}
1548	}
1549	ResetAxes
1550	# Fix the mouse bindings for rotation/panning and the
1551	# camera mode. Ideally we'd create a bindtag for these.
1552	set c $itk_component(view)
1553	if { $bool } {
1554	# Bindings for rotation via mouse
1555	bind $c <ButtonPress-1> \
1556	[itcl::code $this Rotate click %x %y]
1557	bind $c <B1-Motion> \
1558	[itcl::code $this Rotate drag %x %y]
1559	bind $c <ButtonRelease-1> \
1560	[itcl::code $this Rotate release %x %y]
1561	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1562	$_arcball quaternion $q
1563	if {$_view(ortho)} {
1564	SendCmd "camera mode ortho"
1565	} else {
1566	SendCmd "camera mode persp"
1567	}
1568	SendCmd "camera orient $q"
1569	} else {
1570	set _settings(heightmapScale) 0
1571	bind $c <ButtonPress-1> {}
1572	bind $c <B1-Motion> {}
1573	bind $c <ButtonRelease-1> {}
1574	SendCmd "camera mode image"
1575	}
1576	}
1577	"legendVisible" {
1578	if { !$_settings(legendVisible) } {
1579	$itk_component(view) delete legend
1580	}
1581	DrawLegend $_curFldName
1582	}
1583	default {
1584	error "don't know how to fix $what"
1585	}
1586	}
1587	}
1588
1589	#
1590	# RequestLegend --
1591	#
1592	# Request a new legend from the server. The size of the legend
1593	# is determined from the height of the canvas.
1594	#
1595	# This should be called when
1596	# 1. A new current colormap is set.
1597	# 2. Window is resized.
1598	# 3. The limits of the data have changed. (Just need a redraw).
1599	# 4. Number of isolines have changed. (Just need a redraw).
1600	# 5. Legend becomes visible (Just need a redraw).
1601	#
1602	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1603	set _legendPending 0
1604	set font "Arial 8"
1605	set lineht [font metrics $font -linespace]
1606	set c $itk_component(view)
1607	set w 12
1608	set h [expr {$_height - 2 * ($lineht + 2)}]
1609	if { $h < 1} {
1610	return
1611	}
1612	if { [info exists _fields($_curFldName)] } {
1613	set title [lindex $_fields($_curFldName) 0]
1614	if { $title != "component" } {
1615	set h [expr $h - ($lineht + 2)]
1616	}
1617	} else {
1618	return
1619	}
1620	# Set the legend on the first heightmap dataset.
1621	if { $_currentColormap != "" } {
1622	set cmap $_currentColormap
1623	SendCmdNoWait "legend $cmap scalar $_curFldName {} $w $h 0"
1624	SendCmdNoWait "heightmap colormode scalar $_curFldName"
1625	SendCmdNoWait "dataset scalar $_curFldName"
1626	}
1627	}
1628
1629	#
1630	# ResetAxes --
1631	#
1632	# Set axis z bounds and range
1633	#
1634	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1635	if { ![info exists _limits(v)] \|\| ![info exists _fields($_curFldName)]} {
1636	SendCmd "dataset maprange all"
1637	SendCmd "axis autorange z on"
1638	SendCmd "axis autobounds z on"
1639	return
1640	}
1641	foreach { vmin vmax } $_limits(v) break
1642	foreach { xmin xmax } $_limits(x) break
1643	foreach { ymin ymax } $_limits(y) break
1644	set dataRange [expr $vmax - $vmin]
1645	set boundsRange [expr $xmax - $xmin]
1646	set r [expr $ymax - $ymin]
1647	if {$r > $boundsRange} {
1648	set boundsRange $r
1649	}
1650	if {$dataRange < 1.0e-10} {
1651	set dataScale 1.0
1652	} else {
1653	set dataScale [expr $boundsRange / $dataRange]
1654	}
1655	set heightScale [GetHeightmapScale]
1656	set bMin [expr $heightScale * $dataScale * $vmin]
1657	set bMax [expr $heightScale * $dataScale * $vmax]
1658	set fieldName $_curFldName
1659	SendCmd "dataset maprange explicit $_limits(v) $fieldName"
1660	SendCmd "axis bounds z $bMin $bMax"
1661	SendCmd "axis range z $_limits(v)"
1662	}
1663
1664	#
1665	# SetCurrentColormap --
1666	#
1667	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { stylelist } {
1668	array set style {
1669	-color BCGYR
1670	-levels 10
1671	-opacity 1.0
1672	}
1673	array set style $stylelist
1674
1675	set name "$style(-color):$style(-levels):$style(-opacity)"
1676	if { ![info exists _colormaps($name)] } {
1677	set stylelist [array get style]
1678	BuildColormap $name $stylelist
1679	set _colormaps($name) $stylelist
1680	}
1681	set _currentColormap $name
1682	}
1683
1684
1685	#
1686	# BuildColormap --
1687	#
1688	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name stylelist } {
1689	array set style $stylelist
1690	set cmap [ColorsToColormap $style(-color)]
1691	if { [llength $cmap] == 0 } {
1692	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1693	}
1694	if { ![info exists _settings(heightmapOpacity)] } {
1695	set _settings(heightmapOpacity) $style(-opacity)
1696	}
1697	set max $_settings(heightmapOpacity)
1698
1699	set wmap "0.0 1.0 1.0 1.0"
1700	SendCmd "colormap add $name { $cmap } { $wmap }"
1701	}
1702
1703	# ----------------------------------------------------------------------
1704	# CONFIGURATION OPTION: -mode
1705	# ----------------------------------------------------------------------
1706	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1707	switch -- $itk_option(-mode) {
1708	"heightmap" {
1709	set _settings(isHeightmap) 1
1710	}
1711	"contour" {
1712	set _settings(isHeightmap) 0
1713	}
1714	default {
1715	error "unknown mode settings \"$itk_option(-mode)\""
1716	}
1717	}
1718	AdjustSetting isHeightmap
1719	}
1720
1721	# ----------------------------------------------------------------------
1722	# CONFIGURATION OPTION: -plotbackground
1723	# ----------------------------------------------------------------------
1724	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1725	if { [isconnected] } {
1726	set rgb [Color2RGB $itk_option(-plotbackground)]
1727	SendCmd "screen bgcolor $rgb"
1728	$itk_component(view) configure -background $itk_option(-plotbackground)
1729	}
1730	}
1731
1732	# ----------------------------------------------------------------------
1733	# CONFIGURATION OPTION: -plotforeground
1734	# ----------------------------------------------------------------------
1735	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1736	if { [isconnected] } {
1737	set rgb [Color2RGB $itk_option(-plotforeground)]
1738	SendCmd "dataset color $rgb"
1739	SendCmd "axis color all $rgb"
1740	}
1741	}
1742
1743	itcl::body Rappture::VtkHeightmapViewer::limits { dataobj } {
1744	lappend limits x [$dataobj limits x]
1745	lappend limits y [$dataobj limits y]
1746	lappend limits v [$dataobj limits v]
1747	return $limits
1748	}
1749
1750	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1751
1752	set fg [option get $itk_component(hull) font Font]
1753	#set bfg [option get $itk_component(hull) boldFont Font]
1754
1755	set inner [$itk_component(main) insert end \
1756	-title "Contour Settings" \
1757	-icon [Rappture::icon volume-on]]
1758	$inner configure -borderwidth 4
1759
1760	checkbutton $inner.legend \
1761	-text "Legend" \
1762	-variable [itcl::scope _settings(legendVisible)] \
1763	-command [itcl::code $this AdjustSetting legendVisible] \
1764	-font "Arial 9"
1765
1766	checkbutton $inner.wireframe \
1767	-text "Wireframe" \
1768	-variable [itcl::scope _settings(wireframe)] \
1769	-command [itcl::code $this AdjustSetting wireframe] \
1770	-font "Arial 9"
1771
1772	itk_component add lighting {
1773	checkbutton $inner.lighting \
1774	-text "Enable Lighting" \
1775	-variable [itcl::scope _settings(lighting)] \
1776	-command [itcl::code $this AdjustSetting lighting] \
1777	-font "Arial 9"
1778	} {
1779	ignore -font
1780	}
1781
1782	checkbutton $inner.edges \
1783	-text "Edges" \
1784	-variable [itcl::scope _settings(edges)] \
1785	-command [itcl::code $this AdjustSetting edges] \
1786	-font "Arial 9"
1787
1788	checkbutton $inner.outline \
1789	-text "Outline" \
1790	-variable [itcl::scope _settings(outline)] \
1791	-command [itcl::code $this AdjustSetting outline] \
1792	-font "Arial 9"
1793
1794	checkbutton $inner.stretch \
1795	-text "Stretch to fit" \
1796	-variable [itcl::scope _settings(stretchToFit)] \
1797	-command [itcl::code $this AdjustSetting stretchToFit] \
1798	-font "Arial 9"
1799
1800	label $inner.field_l -text "Field" -font "Arial 9"
1801	itk_component add field {
1802	Rappture::Combobox $inner.field -width 10 -editable no
1803	}
1804	bind $inner.field <<Value>> \
1805	[itcl::code $this AdjustSetting field]
1806
1807	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1808	itk_component add colormap {
1809	Rappture::Combobox $inner.colormap -width 10 -editable no
1810	}
1811	$inner.colormap choices insert end \
1812	"BCGYR" "BCGYR" \
1813	"BGYOR" "BGYOR" \
1814	"blue" "blue" \
1815	"blue-to-brown" "blue-to-brown" \
1816	"blue-to-orange" "blue-to-orange" \
1817	"blue-to-grey" "blue-to-grey" \
1818	"green-to-magenta" "green-to-magenta" \
1819	"greyscale" "greyscale" \
1820	"nanohub" "nanohub" \
1821	"rainbow" "rainbow" \
1822	"spectral" "spectral" \
1823	"ROYGB" "ROYGB" \
1824	"RYGCB" "RYGCB" \
1825	"brown-to-blue" "brown-to-blue" \
1826	"grey-to-blue" "grey-to-blue" \
1827	"orange-to-blue" "orange-to-blue" \
1828	"none" "none"
1829
1830	$itk_component(colormap) value "BCGYR"
1831	bind $inner.colormap <<Value>> \
1832	[itcl::code $this AdjustSetting colormap]
1833
1834	label $inner.isolinecolor_l -text "Isolines" -font "Arial 9"
1835	itk_component add isolinecolor {
1836	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1837	}
1838	$inner.isolinecolor choices insert end \
1839	"black" "black" \
1840	"blue" "blue" \
1841	"cyan" "cyan" \
1842	"green" "green" \
1843	"grey" "grey" \
1844	"magenta" "magenta" \
1845	"orange" "orange" \
1846	"red" "red" \
1847	"white" "white" \
1848	"none" "none"
1849
1850	$itk_component(isolinecolor) value "black"
1851	bind $inner.isolinecolor <<Value>> \
1852	[itcl::code $this AdjustSetting isolineColor]
1853
1854	label $inner.background_l -text "Background" -font "Arial 9"
1855	itk_component add background {
1856	Rappture::Combobox $inner.background -width 10 -editable no
1857	}
1858	$inner.background choices insert end \
1859	"black" "black" \
1860	"white" "white" \
1861	"grey" "grey"
1862
1863	$itk_component(background) value "white"
1864	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1865
1866	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1867	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1868	-variable [itcl::scope _settings(heightmapOpacity)] \
1869	-width 10 \
1870	-showvalue off \
1871	-command [itcl::code $this AdjustSetting heightmapOpacity]
1872
1873	label $inner.scale_l -text "Scale" -font "Arial 9"
1874	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1875	-variable [itcl::scope _settings(heightmapScale)] \
1876	-width 10 \
1877	-showvalue off \
1878	-command [itcl::code $this AdjustSetting heightmapScale]
1879
1880	blt::table $inner \
1881	0,0 $inner.colormap_l -anchor w -pady 2 \
1882	0,1 $inner.colormap -anchor w -pady 2 -fill x \
1883	1,0 $inner.isolinecolor_l -anchor w -pady 2 \
1884	1,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
1885	2,0 $inner.background_l -anchor w -pady 2 \
1886	2,1 $inner.background -anchor w -pady 2 -fill x \
1887	4,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1888	5,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
1889	6,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1890	7,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1891	8,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1892	9,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
1893	10,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1894	11,0 $inner.opacity_l -anchor w -pady 2 \
1895	11,1 $inner.opacity -fill x -pady 2 \
1896	12,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
1897	12,1 $inner.scale -fill x -pady 2 -cspan 2 \
1898
1899	if { [array size _fields] > 1 } {
1900	blt::table $inner \
1901	3,0 $inner.field_l -anchor w -pady 2 \
1902	3,1 $inner.field -anchor w -pady 2 -fill x
1903	}
1904	blt::table configure $inner r* c* -resize none
1905	blt::table configure $inner r13 c1 -resize expand
1906	}
1907
1908	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
1909
1910	set fg [option get $itk_component(hull) font Font]
1911	#set bfg [option get $itk_component(hull) boldFont Font]
1912
1913	set inner [$itk_component(main) insert end \
1914	-title "Axis Settings" \
1915	-icon [Rappture::icon axis1]]
1916	$inner configure -borderwidth 4
1917
1918	checkbutton $inner.visible \
1919	-text "Axes" \
1920	-variable [itcl::scope _settings(axisVisible)] \
1921	-command [itcl::code $this AdjustSetting axisVisible] \
1922	-font "Arial 9"
1923	checkbutton $inner.labels \
1924	-text "Axis Labels" \
1925	-variable [itcl::scope _settings(axisLabels)] \
1926	-command [itcl::code $this AdjustSetting axisLabels] \
1927	-font "Arial 9"
1928	label $inner.grid_l -text "Grid" -font "Arial 9"
1929	checkbutton $inner.xgrid \
1930	-text "X" \
1931	-variable [itcl::scope _settings(axisXGrid)] \
1932	-command [itcl::code $this AdjustSetting axisXGrid] \
1933	-font "Arial 9"
1934	checkbutton $inner.ygrid \
1935	-text "Y" \
1936	-variable [itcl::scope _settings(axisYGrid)] \
1937	-command [itcl::code $this AdjustSetting axisYGrid] \
1938	-font "Arial 9"
1939	checkbutton $inner.zgrid \
1940	-text "Z" \
1941	-variable [itcl::scope _settings(axisZGrid)] \
1942	-command [itcl::code $this AdjustSetting axisZGrid] \
1943	-font "Arial 9"
1944	checkbutton $inner.minorticks \
1945	-text "Minor Ticks" \
1946	-variable [itcl::scope _settings(axisMinorTicks)] \
1947	-command [itcl::code $this AdjustSetting axisMinorTicks] \
1948	-font "Arial 9"
1949
1950
1951	label $inner.mode_l -text "Mode" -font "Arial 9"
1952
1953	itk_component add axisflymode {
1954	Rappture::Combobox $inner.mode -width 10 -editable no
1955	}
1956	$inner.mode choices insert end \
1957	"static_triad" "static" \
1958	"closest_triad" "closest" \
1959	"furthest_triad" "furthest" \
1960	"outer_edges" "outer"
1961	$itk_component(axisflymode) value "static"
1962	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlymode]
1963
1964	blt::table $inner \
1965	0,0 $inner.visible -anchor w -cspan 4 \
1966	1,0 $inner.labels -anchor w -cspan 4 \
1967	2,0 $inner.minorticks -anchor w -cspan 4 \
1968	4,0 $inner.grid_l -anchor w \
1969	4,1 $inner.xgrid -anchor w \
1970	4,2 $inner.ygrid -anchor w \
1971	4,3 $inner.zgrid -anchor w \
1972	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1973	5,1 $inner.mode -fill x -cspan 3
1974
1975	blt::table configure $inner r* c* -resize none
1976	blt::table configure $inner r7 c6 -resize expand
1977	blt::table configure $inner r3 -height 0.125i
1978	}
1979
1980
1981	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
1982	set inner [$itk_component(main) insert end \
1983	-title "Camera Settings" \
1984	-icon [Rappture::icon camera]]
1985	$inner configure -borderwidth 4
1986
1987	set labels { qx qy qz qw xpan ypan zoom }
1988	set row 0
1989	foreach tag $labels {
1990	label $inner.${tag}label -text $tag -font "Arial 9"
1991	entry $inner.${tag} -font "Arial 9" -bg white \
1992	-textvariable [itcl::scope _view($tag)]
1993	bind $inner.${tag} <KeyPress-Return> \
1994	[itcl::code $this camera set ${tag}]
1995	blt::table $inner \
1996	$row,0 $inner.${tag}label -anchor e -pady 2 \
1997	$row,1 $inner.${tag} -anchor w -pady 2
1998	blt::table configure $inner r$row -resize none
1999	incr row
2000	}
2001	checkbutton $inner.ortho \
2002	-text "Orthographic Projection" \
2003	-variable [itcl::scope _view(ortho)] \
2004	-command [itcl::code $this camera set ortho] \
2005	-font "Arial 9"
2006	blt::table $inner \
2007	$row,0 $inner.ortho -columnspan 2 -anchor w -pady 2
2008	blt::table configure $inner r$row -resize none
2009	incr row
2010
2011	blt::table configure $inner c0 c1 -resize none
2012	blt::table configure $inner c2 -resize expand
2013	blt::table configure $inner r$row -resize expand
2014	}
2015
2016	#
2017	# camera --
2018	#
2019	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2020	switch -- $option {
2021	"show" {
2022	puts [array get _view]
2023	}
2024	"set" {
2025	set who [lindex $args 0]
2026	set x $_view($who)
2027	set code [catch { string is double $x } result]
2028	if { $code != 0 \|\| !$result } {
2029	return
2030	}
2031	switch -- $who {
2032	"ortho" {
2033	if {$_view(ortho)} {
2034	SendCmd "camera mode ortho"
2035	} else {
2036	SendCmd "camera mode persp"
2037	}
2038	}
2039	"xpan" - "ypan" {
2040	PanCamera
2041	}
2042	"qx" - "qy" - "qz" - "qw" {
2043	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2044	$_arcball quaternion $q
2045	EventuallyRotate $q
2046	}
2047	"zoom" {
2048	SendCmd "camera zoom $_view(zoom)"
2049	}
2050	}
2051	}
2052	}
2053	}
2054
2055	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2056	set bytes ""
2057	foreach dataobj [get] {
2058	foreach comp [$dataobj components] {
2059	set tag $dataobj-$comp
2060	set contents [ConvertToVtkData $dataobj $comp]
2061	#set contents [$dataobj vtkdata $comp]
2062	append bytes "$contents\n\n"
2063	}
2064	}
2065	return [list .vtk $bytes]
2066	}
2067
2068	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2069	if { [image width $_image(download)] > 0 &&
2070	[image height $_image(download)] > 0 } {
2071	set bytes [$_image(download) data -format "jpeg -quality 100"]
2072	set bytes [Rappture::encoding::decode -as b64 $bytes]
2073	return [list .jpg $bytes]
2074	}
2075	return ""
2076	}
2077
2078	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2079	Rappture::Balloon $popup \
2080	-title "[Rappture::filexfer::label downloadWord] as..."
2081	set inner [$popup component inner]
2082	label $inner.summary -text "" -anchor w
2083	radiobutton $inner.vtk_button -text "VTK data file" \
2084	-variable [itcl::scope _downloadPopup(format)] \
2085	-font "Arial 9 " \
2086	-value vtk
2087	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2088	radiobutton $inner.image_button -text "Image File" \
2089	-variable [itcl::scope _downloadPopup(format)] \
2090	-font "Arial 9 " \
2091	-value image
2092	Rappture::Tooltip::for $inner.image_button \
2093	"Save as digital image."
2094
2095	button $inner.ok -text "Save" \
2096	-highlightthickness 0 -pady 2 -padx 3 \
2097	-command $command \
2098	-compound left \
2099	-image [Rappture::icon download]
2100
2101	button $inner.cancel -text "Cancel" \
2102	-highlightthickness 0 -pady 2 -padx 3 \
2103	-command [list $popup deactivate] \
2104	-compound left \
2105	-image [Rappture::icon cancel]
2106
2107	blt::table $inner \
2108	0,0 $inner.summary -cspan 2 \
2109	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2110	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2111	4,1 $inner.cancel -width .9i -fill y \
2112	4,0 $inner.ok -padx 2 -width .9i -fill y
2113	blt::table configure $inner r3 -height 4
2114	blt::table configure $inner r4 -pady 4
2115	raise $inner.image_button
2116	$inner.vtk_button invoke
2117	return $inner
2118	}
2119
2120	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2121	# Parse style string.
2122	set tag $dataobj-$comp
2123	array set style {
2124	-color BCGYR
2125	-edges 0
2126	-edgecolor black
2127	-lighting 1
2128	-linewidth 1.0
2129	-levels 10
2130	-visible 1
2131	}
2132	if { $_currentColormap == "" } {
2133	set stylelist [$dataobj style $comp]
2134	if { $stylelist != "" } {
2135	array set style $stylelist
2136	set stylelist [array get style]
2137	SetCurrentColormap $stylelist
2138	}
2139	$itk_component(colormap) value $style(-color)
2140	}
2141	set _numContours $style(-levels)
2142	set scale [GetHeightmapScale]
2143	SendCmd "heightmap add numcontours $_numContours $scale $tag"
2144	set _comp2scale($tag) $_settings(heightmapScale)
2145	SendCmd "heightmap edges $_settings(edges) $tag"
2146	SendCmd "heightmap wireframe $_settings(wireframe) $tag"
2147	SendCmd "heightmap colormap $_currentColormap $tag"
2148	}
2149
2150	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2151	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2152	return 0
2153	}
2154	return 1
2155	}
2156
2157	# ----------------------------------------------------------------------
2158	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2159	#
2160	# Invoked automatically whenever the "legend" command comes in from
2161	# the rendering server. Indicates that binary image data with the
2162	# specified <size> will follow.
2163	# ----------------------------------------------------------------------
2164	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2165	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2166	set _title $title
2167	regsub {\(mag\)} $title "" _title
2168	if { [isconnected] } {
2169	set bytes [ReceiveBytes $size]
2170	if { ![info exists _image(legend)] } {
2171	set _image(legend) [image create photo]
2172	}
2173	$_image(legend) configure -data $bytes
2174	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2175	if { [catch {DrawLegend $_title} errs] != 0 } {
2176	global errorInfo
2177	puts stderr "errs=$errs errorInfo=$errorInfo"
2178	}
2179	}
2180	}
2181
2182	#
2183	# DrawLegend --
2184	#
2185	# Draws the legend in it's own canvas which resides to the right
2186	# of the contour plot area.
2187	#
2188	itcl::body Rappture::VtkHeightmapViewer::DrawLegend { name } {
2189	set c $itk_component(view)
2190	set w [winfo width $c]
2191	set h [winfo height $c]
2192	set font "Arial 8"
2193	set lineht [font metrics $font -linespace]
2194
2195	if { $name == "component" } {
2196	set title ""
2197	} else {
2198	if { [info exists _fields($name)] } {
2199	foreach { title units } $_fields($name) break
2200	if { $units != "" } {
2201	set title [format "%s (%s)" $title $units]
2202	}
2203	} else {
2204	set title $name
2205	}
2206	}
2207	set x [expr $w - 2]
2208	if { !$_settings(legendVisible) } {
2209	$c delete legend
2210	return
2211	}
2212	if { [$c find withtag "legend"] == "" } {
2213	set y 2
2214	# If there's a legend title, create a text item for the title.
2215	if { $title != "" } {
2216	$c create text $x $y \
2217	-anchor ne \
2218	-fill $itk_option(-plotforeground) -tags "title legend" \
2219	-font $font
2220	incr y $lineht
2221	}
2222	$c create text $x $y \
2223	-anchor ne \
2224	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2225	-font $font
2226	incr y $lineht
2227	$c create image $x $y \
2228	-anchor ne \
2229	-image $_image(legend) -tags "colormap legend"
2230	$c create text $x [expr {$h-2}] \
2231	-anchor se \
2232	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2233	-font $font
2234	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2235	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2236	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2237	}
2238	$c delete isoline
2239	set x2 $x
2240	set iw [image width $_image(legend)]
2241	set ih [image height $_image(legend)]
2242	set x1 [expr $x2 - ($iw*12)/10]
2243	set color [$itk_component(isolinecolor) value]
2244	# Draw the isolines on the legend.
2245	if { $color != "none" && $_numContours > 0 } {
2246	set pixels [blt::vector create \#auto]
2247	set values [blt::vector create \#auto]
2248	set range [image height $_image(legend)]
2249	# Order of pixels is max to min (max is at top of legend).
2250	$pixels seq $ih 0 $_numContours
2251	set offset [expr 2 + $lineht]
2252	# If there's a legend title, increase the offset by the line height.
2253	if { $title != "" } {
2254	incr offset $lineht
2255	}
2256	$pixels expr {round($pixels + $offset)}
2257	# Order of values is min to max.
2258	foreach { vmin vmax } $_limits(v) break
2259	$values seq $vmin $vmax $_numContours
2260	set tags "isoline legend"
2261	foreach pos [$pixels range 0 end] value [$values range end 0] {
2262	set y1 [expr int($pos)]
2263	set id [$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags]
2264	$c bind $id <Enter> [itcl::code $this EnterIsoline %x %y $value]
2265	$c bind $id <Leave> [itcl::code $this LeaveIsoline]
2266	}
2267	blt::vector destroy $pixels $values
2268	}
2269
2270	$c bind title <ButtonPress> [itcl::code $this Combo post]
2271	$c bind title <Enter> [itcl::code $this Combo activate]
2272	$c bind title <Leave> [itcl::code $this Combo deactivate]
2273	# Reset the item coordinates according the current size of the plot.
2274	$c itemconfigure title -text $title
2275	if { [info exists _limits(v)] } {
2276	foreach { vmin vmax } $_limits(v) break
2277	$c itemconfigure vmin -text [format %g $vmin]
2278	$c itemconfigure vmax -text [format %g $vmax]
2279	}
2280	set y 2
2281	# If there's a legend title, move the title to the correct position
2282	if { $title != "" } {
2283	$c coords title $x $y
2284	incr y $lineht
2285	}
2286	$c coords vmax $x $y
2287	incr y $lineht
2288	$c coords colormap $x $y
2289	$c coords vmin $x [expr {$h - 2}]
2290	}
2291
2292	#
2293	# EnterIsoline --
2294	#
2295	itcl::body Rappture::VtkHeightmapViewer::EnterIsoline { x y value } {
2296	SetIsolineTip $x $y $value
2297	}
2298
2299	#
2300	# LeaveIsoline --
2301	#
2302	itcl::body Rappture::VtkHeightmapViewer::LeaveIsoline { } {
2303	Rappture::Tooltip::tooltip cancel
2304	.rappturetooltip configure -icon ""
2305	}
2306
2307	#
2308	# SetIsolineTip --
2309	#
2310	itcl::body Rappture::VtkHeightmapViewer::SetIsolineTip { x y value } {
2311	set c $itk_component(view)
2312	set w [winfo width $c]
2313	set h [winfo height $c]
2314	set font "Arial 8"
2315	set lineht [font metrics $font -linespace]
2316
2317	if { [info exists _fields($_title)] } {
2318	foreach { title units } $_fields($_title) break
2319	if { $units != "" } {
2320	set title [format "%s (%s)" $title $units]
2321	}
2322	} else {
2323	set title $_title
2324	}
2325	set imgHeight [image height $_image(legend)]
2326	set coords [$c coords colormap]
2327	set imgX [expr $w - [image width $_image(legend)] - 2]
2328	set imgY [expr $y - 2 * ($lineht + 2)]
2329
2330	.rappturetooltip configure -icon ""
2331
2332	# Compute the value of the point
2333	set tipx [expr $x + 15]
2334	set tipy [expr $y - 5]
2335	Rappture::Tooltip::text $c "Isoline $value"
2336	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2337	}
2338
2339
2340	#
2341	# EnterLegend --
2342	#
2343	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2344	SetLegendTip $x $y
2345	}
2346
2347	#
2348	# MotionLegend --
2349	#
2350	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2351	Rappture::Tooltip::tooltip cancel
2352	set c $itk_component(view)
2353	SetLegendTip $x $y
2354	}
2355
2356	#
2357	# LeaveLegend --
2358	#
2359	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2360	Rappture::Tooltip::tooltip cancel
2361	.rappturetooltip configure -icon ""
2362	}
2363
2364	#
2365	# SetLegendTip --
2366	#
2367	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2368	set c $itk_component(view)
2369	set w [winfo width $c]
2370	set h [winfo height $c]
2371	set font "Arial 8"
2372	set lineht [font metrics $font -linespace]
2373
2374	set imgHeight [image height $_image(legend)]
2375	set coords [$c coords colormap]
2376	set imgX [expr $w - [image width $_image(legend)] - 2]
2377	set imgY [expr $y - 2 * ($lineht + 2)]
2378
2379	if { [info exists _fields($_title)] } {
2380	foreach { title units } $_fields($_title) break
2381	if { $units != "" } {
2382	set title [format "%s (%s)" $title $units]
2383	}
2384	} else {
2385	set title $_title
2386	}
2387	# Make a swatch of the selected color
2388	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2389	#puts stderr "out of range: $imgY"
2390	return
2391	}
2392	if { ![info exists _image(swatch)] } {
2393	set _image(swatch) [image create photo -width 24 -height 24]
2394	}
2395	set color [eval format "\#%02x%02x%02x" $pixel]
2396	$_image(swatch) put black -to 0 0 23 23
2397	$_image(swatch) put $color -to 1 1 22 22
2398	.rappturetooltip configure -icon $_image(swatch)
2399
2400	# Compute the value of the point
2401	if { [info exists _limits(v)] } {
2402	foreach { vmin vmax } $_limits(v) break
2403	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2404	set value [expr $t * ($vmax - $vmin) + $vmin]
2405	} else {
2406	set value 0.0
2407	}
2408	set tipx [expr $x + 15]
2409	set tipy [expr $y - 5]
2410	Rappture::Tooltip::text $c "$title $value"
2411	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2412	}
2413
2414	# ----------------------------------------------------------------------
2415	# USAGE: _dropdown post
2416	# USAGE: _dropdown unpost
2417	# USAGE: _dropdown select
2418	#
2419	# Used internally to handle the dropdown list for this combobox. The
2420	# post/unpost options are invoked when the list is posted or unposted
2421	# to manage the relief of the controlling button. The select option
2422	# is invoked whenever there is a selection from the list, to assign
2423	# the value back to the gauge.
2424	# ----------------------------------------------------------------------
2425	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2426	set c $itk_component(view)
2427	switch -- $option {
2428	post {
2429	foreach { x1 y1 x2 y2 } [$c bbox title] break
2430	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2431	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2432	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2433	tk_popup $itk_component(fieldmenu) $x $y
2434	}
2435	activate {
2436	$c itemconfigure title -fill red
2437	}
2438	deactivate {
2439	$c itemconfigure title -fill $itk_option(-plotforeground)
2440	}
2441	invoke {
2442	$itk_component(field) value $_curFldName
2443	AdjustSetting field
2444	}
2445	default {
2446	error "bad option \"$option\": should be post, unpost, select"
2447	}
2448	}
2449	}
2450
2451	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2452	if { $_settings(isHeightmap) } {
2453	set val $_settings(heightmapScale)
2454	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2455	return $sval
2456	}
2457	set sval 0
2458	}
2459
2460	itcl::body Rappture::VtkHeightmapViewer::ResetColormap { color } {
2461	array set style {
2462	-color BCGYR
2463	-levels 10
2464	-opacity 1.0
2465	}
2466	if { [info exists _colormap($_currentColormap)] } {
2467	array set style $_colormap($_currentColormap)
2468	}
2469	set style(-color) $color
2470	SetCurrentColormap [array get style]
2471	}
2472

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