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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 3416

Last change on this file since 3416 was 3416, checked in by gah, 11 years ago
fix switching between heightmap/contour modes
File size: 80.1 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 ""
161	private variable _curFldLabel ""
162	private variable _numContours 0
163	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
164	}
165
166	itk::usual VtkHeightmapViewer {
167	keep -background -foreground -cursor -font
168	keep -plotbackground -plotforeground -mode
169	}
170
171	# ----------------------------------------------------------------------
172	# CONSTRUCTOR
173	# ----------------------------------------------------------------------
174	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
175	set _serverType "vtkvis"
176
177	# Rebuild event
178	$_dispatcher register !rebuild
179	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
180
181	# Resize event
182	$_dispatcher register !resize
183	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
184
185	# Recontour event
186	$_dispatcher register !contour
187	$_dispatcher dispatch $this !contour "[itcl::code $this DoContour]; list"
188
189	# Rotate event
190	$_dispatcher register !rotate
191	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
192
193	# Legend event
194	$_dispatcher register !legend
195	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
196
197	#
198	# Populate parser with commands handle incoming requests
199	#
200	$_parser alias image [itcl::code $this ReceiveImage]
201	$_parser alias dataset [itcl::code $this ReceiveDataset]
202	$_parser alias legend [itcl::code $this ReceiveLegend]
203	$_parser alias viserror [itcl::code $this ReceiveError]
204
205	# Initialize the view to some default parameters.
206	array set _view {
207	qw 0.36
208	qx 0.25
209	qy 0.50
210	qz 0.70
211	zoom 1.0
212	xpan 0
213	ypan 0
214	ortho 1
215	}
216	set _arcball [blt::arcball create 100 100]
217	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
218	$_arcball quaternion $q
219
220	array set _settings [subst {
221	axisFlymode "static"
222	axisMinorTicks 1
223	stretchToFit 0
224	axisLabels 1
225	axisVisible 1
226	axisXGrid 0
227	axisYGrid 0
228	axisZGrid 0
229	colormapVisible 1
230	edges 0
231	field "Default"
232	heightmapOpacity 100
233	heightmapScale 50
234	isHeightmap 0
235	isolines 10
236	isolinesVisible 1
237	isolineColor black
238	legendVisible 1
239	lighting 0
240	outline 0
241	wireframe 0
242	}]
243
244	itk_component add view {
245	canvas $itk_component(plotarea).view \
246	-highlightthickness 0 -borderwidth 0
247	} {
248	usual
249	ignore -highlightthickness -borderwidth -background
250	}
251
252	itk_component add fieldmenu {
253	menu $itk_component(plotarea).menu \
254	-relief flat \
255	-tearoff no
256	} {
257	usual
258	ignore -background -foreground -relief -tearoff
259	}
260	set c $itk_component(view)
261	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
262	bind $c <4> [itcl::code $this Zoom in 0.25]
263	bind $c <5> [itcl::code $this Zoom out 0.25]
264	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
265	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
266	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
267	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
268	bind $c <Enter> "focus %W"
269	bind $c <Control-F1> [itcl::code $this ToggleConsole]
270
271	# Fix the scrollregion in case we go off screen
272	$c configure -scrollregion [$c bbox all]
273
274	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
275	set _map(cwidth) -1
276	set _map(cheight) -1
277	set _map(zoom) 1.0
278	set _map(original) ""
279
280	set f [$itk_component(main) component controls]
281	itk_component add reset {
282	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
283	-highlightthickness 0 \
284	-image [Rappture::icon reset-view] \
285	-command [itcl::code $this Zoom reset]
286	} {
287	usual
288	ignore -highlightthickness
289	}
290	pack $itk_component(reset) -side top -padx 2 -pady 2
291	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
292
293	itk_component add zoomin {
294	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
295	-highlightthickness 0 \
296	-image [Rappture::icon zoom-in] \
297	-command [itcl::code $this Zoom in]
298	} {
299	usual
300	ignore -highlightthickness
301	}
302	pack $itk_component(zoomin) -side top -padx 2 -pady 2
303	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
304
305	itk_component add zoomout {
306	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
307	-highlightthickness 0 \
308	-image [Rappture::icon zoom-out] \
309	-command [itcl::code $this Zoom out]
310	} {
311	usual
312	ignore -highlightthickness
313	}
314	pack $itk_component(zoomout) -side top -padx 2 -pady 2
315	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
316
317	itk_component add mode {
318	Rappture::PushButton $f.mode \
319	-onimage [Rappture::icon surface] \
320	-offimage [Rappture::icon surface] \
321	-variable [itcl::scope _settings(isHeightmap)] \
322	-command [itcl::code $this AdjustSetting isHeightmap] \
323	}
324	Rappture::Tooltip::for $itk_component(mode) \
325	"Toggle the surface/contour on/off"
326	pack $itk_component(mode) -padx 2 -pady 2
327
328	if { [catch {
329	BuildContourTab
330	BuildAxisTab
331	BuildCameraTab
332	} errs] != 0 } {
333	global errorInfo
334	puts stderr "errs=$errs errorInfo=$errorInfo"
335	}
336	set _image(legend) [image create photo]
337
338	# Hack around the Tk panewindow. The problem is that the requested
339	# size of the 3d view isn't set until an image is retrieved from
340	# the server. So the panewindow uses the tiny size.
341	set w 10000
342	pack forget $itk_component(view)
343	blt::table $itk_component(plotarea) \
344	0,0 $itk_component(view) -fill both -reqwidth $w
345	blt::table configure $itk_component(plotarea) c1 -resize none
346
347	# Bindings for panning via mouse
348	bind $itk_component(view) <ButtonPress-2> \
349	[itcl::code $this Pan click %x %y]
350	bind $itk_component(view) <B2-Motion> \
351	[itcl::code $this Pan drag %x %y]
352	bind $itk_component(view) <ButtonRelease-2> \
353	[itcl::code $this Pan release %x %y]
354
355	bind $itk_component(view) <ButtonRelease-3> \
356	[itcl::code $this Pick %x %y]
357
358	# Bindings for panning via keyboard
359	bind $itk_component(view) <KeyPress-Left> \
360	[itcl::code $this Pan set -10 0]
361	bind $itk_component(view) <KeyPress-Right> \
362	[itcl::code $this Pan set 10 0]
363	bind $itk_component(view) <KeyPress-Up> \
364	[itcl::code $this Pan set 0 -10]
365	bind $itk_component(view) <KeyPress-Down> \
366	[itcl::code $this Pan set 0 10]
367	bind $itk_component(view) <Shift-KeyPress-Left> \
368	[itcl::code $this Pan set -2 0]
369	bind $itk_component(view) <Shift-KeyPress-Right> \
370	[itcl::code $this Pan set 2 0]
371	bind $itk_component(view) <Shift-KeyPress-Up> \
372	[itcl::code $this Pan set 0 -2]
373	bind $itk_component(view) <Shift-KeyPress-Down> \
374	[itcl::code $this Pan set 0 2]
375
376	# Bindings for zoom via keyboard
377	bind $itk_component(view) <KeyPress-Prior> \
378	[itcl::code $this Zoom out]
379	bind $itk_component(view) <KeyPress-Next> \
380	[itcl::code $this Zoom in]
381
382	bind $itk_component(view) <Enter> "focus $itk_component(view)"
383
384	if {[string equal "x11" [tk windowingsystem]]} {
385	# Bindings for zoom via mouse
386	bind $itk_component(view) <4> [itcl::code $this Zoom out]
387	bind $itk_component(view) <5> [itcl::code $this Zoom in]
388	}
389
390	set _image(download) [image create photo]
391
392	eval itk_initialize $args
393	Connect
394	set _beforeConnect 0
395	}
396
397	# ----------------------------------------------------------------------
398	# DESTRUCTOR
399	# ----------------------------------------------------------------------
400	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
401	Disconnect
402	image delete $_image(plot)
403	image delete $_image(download)
404	catch { blt::arcball destroy $_arcball }
405	}
406
407	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
408	if { $_width < 2 } {
409	set _width 500
410	}
411	if { $_height < 2 } {
412	set _height 500
413	}
414	set _start [clock clicks -milliseconds]
415	SendCmd "screen size [expr $_width - 20] $_height"
416	EventuallyRequestLegend
417	set _resizePending 0
418	}
419
420	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
421	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
422	SendCmd "camera orient $q"
423	set _rotatePending 0
424	}
425
426	itcl::body Rappture::VtkHeightmapViewer::DoContour {} {
427	foreach dataset [CurrentDatasets -all] {
428	foreach {dataobj comp} [split $dataset -] break
429	#SendCmd "heightmap numcontours $_numContours $dataset"
430	}
431	set _contourPending 0
432	}
433
434	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
435	if { !$_legendPending } {
436	set _legendPending 1
437	$_dispatcher event -idle !legend
438	}
439	}
440
441	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
442	set _width $w
443	set _height $h
444	$_arcball resize $w $h
445	if { !$_resizePending } {
446	set _resizePending 1
447	$_dispatcher event -after 400 !resize
448	}
449	}
450
451	itcl::body Rappture::VtkHeightmapViewer::EventuallyContour { numContours } {
452	set _numContours $numContours
453	if { !$_contourPending } {
454	set _contourPending 1
455	$_dispatcher event -after 600 !contour
456	}
457	}
458
459	set rotate_delay 100
460
461	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
462	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
463	if { !$_rotatePending } {
464	set _rotatePending 1
465	global rotate_delay
466	$_dispatcher event -after $rotate_delay !rotate
467	}
468	}
469
470	# ----------------------------------------------------------------------
471	# USAGE: add <dataobj> ?<settings>?
472	#
473	# Clients use this to add a data object to the plot. The optional
474	# <settings> are used to configure the plot. Allowed settings are
475	# -color, -brightness, -width, -linestyle, and -raise.
476	# ----------------------------------------------------------------------
477	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
478	array set params {
479	-color auto
480	-width 1
481	-linestyle solid
482	-brightness 0
483	-raise 0
484	-description ""
485	-param ""
486	-type ""
487	}
488	array set params $settings
489	set params(-description) ""
490	set params(-param) ""
491	foreach {opt val} $settings {
492	if {![info exists params($opt)]} {
493	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
494	}
495	set params($opt) $val
496	}
497	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
498	# can't handle -autocolors yet
499	set params(-color) white
500	}
501	set pos [lsearch -exact $dataobj $_dlist]
502	if {$pos < 0} {
503	lappend _dlist $dataobj
504	}
505	set _obj2ovride($dataobj-color) $params(-color)
506	set _obj2ovride($dataobj-width) $params(-width)
507	set _obj2ovride($dataobj-raise) $params(-raise)
508	$_dispatcher event -idle !rebuild
509	}
510
511
512	# ----------------------------------------------------------------------
513	# USAGE: delete ?<dataobj1> <dataobj2> ...?
514	#
515	# Clients use this to delete a dataobj from the plot. If no dataobjs
516	# are specified, then all dataobjs are deleted. No data objects are
517	# deleted. They are only removed from the display list.
518	#
519	# ----------------------------------------------------------------------
520	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
521	if { [llength $args] == 0} {
522	set args $_dlist
523	}
524	# Delete all specified dataobjs
525	set changed 0
526	foreach dataobj $args {
527	set pos [lsearch -exact $_dlist $dataobj]
528	if { $pos < 0 } {
529	continue; # Don't know anything about it.
530	}
531	# Remove it from the dataobj list.
532	set _dlist [lreplace $_dlist $pos $pos]
533	array unset _obj2ovride $dataobj-*
534	array unset _settings $dataobj-*
535	# Append to the end of the dataobj list.
536	#lappend _dlist $dataobj
537	set changed 1
538	}
539	# If anything changed, then rebuild the plot
540	if { $changed } {
541	$_dispatcher event -idle !rebuild
542	}
543	}
544
545	# ----------------------------------------------------------------------
546	# USAGE: get ?-objects?
547	# USAGE: get ?-visible?
548	# USAGE: get ?-image view?
549	#
550	# Clients use this to query the list of objects being plotted, in
551	# order from bottom to top of this result. The optional "-image"
552	# flag can also request the internal images being shown.
553	# ----------------------------------------------------------------------
554	itcl::body Rappture::VtkHeightmapViewer::get {args} {
555	if {[llength $args] == 0} {
556	set args "-objects"
557	}
558
559	set op [lindex $args 0]
560	switch -- $op {
561	"-objects" {
562	# put the dataobj list in order according to -raise options
563	set dlist {}
564	foreach dataobj $_dlist {
565	if { ![IsValidObject $dataobj] } {
566	continue
567	}
568	if {[info exists _obj2ovride($dataobj-raise)] &&
569	$_obj2ovride($dataobj-raise)} {
570	set dlist [linsert $dlist 0 $dataobj]
571	} else {
572	lappend dlist $dataobj
573	}
574	}
575	return $dlist
576	}
577	"-visible" {
578	set dlist {}
579	foreach dataobj $_dlist {
580	if { ![IsValidObject $dataobj] } {
581	continue
582	}
583	if { ![info exists _obj2ovride($dataobj-raise)] } {
584	# No setting indicates that the object isn't visible.
585	continue
586	}
587	# Otherwise use the -raise parameter to put the object to
588	# the front of the list.
589	if { $_obj2ovride($dataobj-raise) } {
590	set dlist [linsert $dlist 0 $dataobj]
591	} else {
592	lappend dlist $dataobj
593	}
594	}
595	return $dlist
596	}
597	-image {
598	if {[llength $args] != 2} {
599	error "wrong # args: should be \"get -image view\""
600	}
601	switch -- [lindex $args end] {
602	view {
603	return $_image(plot)
604	}
605	default {
606	error "bad image name \"[lindex $args end]\": should be view"
607	}
608	}
609	}
610	default {
611	error "bad option \"$op\": should be -objects or -image"
612	}
613	}
614	}
615
616	# ----------------------------------------------------------------------
617	# USAGE: scale ?<data1> <data2> ...?
618	#
619	# Sets the default limits for the overall plot according to the
620	# limits of the data for all of the given <data> objects. This
621	# accounts for all objects--even those not showing on the screen.
622	# Because of this, the limits are appropriate for all objects as
623	# the user scans through data in the ResultSet viewer.
624	# ----------------------------------------------------------------------
625	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
626	foreach dataobj $args {
627	array set bounds [limits $dataobj]
628	foreach axis { x y v } {
629	foreach {min max} $bounds($axis) break
630	if { ![info exists _limits($axis)] } {
631	set _limits($axis) [list $min $max]
632	continue
633	}
634	foreach {amin amax} $_limits($axis) break
635	if { $amin > $min } {
636	set amin $min
637	}
638	if { $amax < $max } {
639	set amax $max
640	}
641	set _limits($axis) [list $amin $amax]
642	}
643	}
644	}
645
646	# ----------------------------------------------------------------------
647	# USAGE: download coming
648	# USAGE: download controls <downloadCommand>
649	# USAGE: download now
650	#
651	# Clients use this method to create a downloadable representation
652	# of the plot. Returns a list of the form {ext string}, where
653	# "ext" is the file extension (indicating the type of data) and
654	# "string" is the data itself.
655	# ----------------------------------------------------------------------
656	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
657	switch $option {
658	coming {
659	if {[catch {
660	blt::winop snap $itk_component(plotarea) $_image(download)
661	}]} {
662	$_image(download) configure -width 1 -height 1
663	$_image(download) put #000000
664	}
665	}
666	controls {
667	set popup .vtkviewerdownload
668	if { ![winfo exists .vtkviewerdownload] } {
669	set inner [BuildDownloadPopup $popup [lindex $args 0]]
670	} else {
671	set inner [$popup component inner]
672	}
673	set _downloadPopup(image_controls) $inner.image_frame
674	set num [llength [get]]
675	set num [expr {($num == 1) ? "1 result" : "$num results"}]
676	set word [Rappture::filexfer::label downloadWord]
677	$inner.summary configure -text "$word $num in the following format:"
678	update idletasks ;# Fix initial sizes
679	return $popup
680	}
681	now {
682	set popup .vtkviewerdownload
683	if {[winfo exists .vtkviewerdownload]} {
684	$popup deactivate
685	}
686	switch -- $_downloadPopup(format) {
687	"image" {
688	return [$this GetImage [lindex $args 0]]
689	}
690	"vtk" {
691	return [$this GetVtkData [lindex $args 0]]
692	}
693	}
694	return ""
695	}
696	default {
697	error "bad option \"$option\": should be coming, controls, now"
698	}
699	}
700	}
701
702	# ----------------------------------------------------------------------
703	# USAGE: Connect ?<host:port>,<host:port>...?
704	#
705	# Clients use this method to establish a connection to a new
706	# server, or to reestablish a connection to the previous server.
707	# Any existing connection is automatically closed.
708	# ----------------------------------------------------------------------
709	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
710	global readyForNextFrame
711	set readyForNextFrame 1
712	set _reset 1
713	set _hosts [GetServerList "vtkvis"]
714	if { "" == $_hosts } {
715	return 0
716	}
717	set result [VisViewer::Connect $_hosts]
718	if { $result } {
719	set w [winfo width $itk_component(view)]
720	set h [winfo height $itk_component(view)]
721	EventuallyResize $w $h
722	}
723	return $result
724	}
725
726	#
727	# isconnected --
728	#
729	# Indicates if we are currently connected to the visualization server.
730	#
731	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
732	return [VisViewer::IsConnected]
733	}
734
735	#
736	# disconnect --
737	#
738	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
739	Disconnect
740	set _reset 1
741	}
742
743	#
744	# Disconnect --
745	#
746	# Clients use this method to disconnect from the current rendering
747	# server.
748	#
749	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
750	VisViewer::Disconnect
751
752	$_dispatcher cancel !rebuild
753	$_dispatcher cancel !resize
754	$_dispatcher cancel !contour
755	$_dispatcher cancel !rotate
756	$_dispatcher cancel !legend
757	# disconnected -- no more data sitting on server
758	set _outbuf ""
759	array unset _datasets
760	array unset _data
761	array unset _colormaps
762	array unset _obj2datasets
763	global readyForNextFrame
764	set readyForNextFrame 1
765	}
766
767	#
768	# sendto --
769	#
770	itcl::body Rappture::VtkHeightmapViewer::sendto { bytes } {
771	SendBytes "$bytes\n"
772	}
773
774	#
775	# SendCmd
776	#
777	# Send commands off to the rendering server. If we're currently
778	# sending data objects to the server, buffer the commands to be
779	# sent later.
780	#
781	itcl::body Rappture::VtkHeightmapViewer::SendCmd {string} {
782	if { $_buffering } {
783	append _outbuf $string "\n"
784	} else {
785	SendBytes "$string\n"
786	}
787	}
788
789	#
790	# SendCmdNoWait
791	#
792	# Send commands off to the rendering server. If we're currently
793	# sending data objects to the server, buffer the commands to be
794	# sent later.
795	#
796	itcl::body Rappture::VtkHeightmapViewer::SendCmdNoWait {string} {
797	if { $_buffering } {
798	append _outbuf $string "\n"
799	} else {
800	SendBytes "$string\n"
801	}
802	}
803
804	# ----------------------------------------------------------------------
805	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
806	#
807	# Invoked automatically whenever the "image" command comes in from
808	# the rendering server. Indicates that binary image data with the
809	# specified <size> will follow.
810	# ----------------------------------------------------------------------
811	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
812	global readyForNextFrame
813	set readyForNextFrame 1
814	array set info {
815	-token "???"
816	-bytes 0
817	-type image
818	}
819	array set info $args
820	set bytes [ReceiveBytes $info(-bytes)]
821	if { $info(-type) == "image" } {
822	if 0 {
823	set f [open "last.ppm" "w"]
824	puts $f $bytes
825	close $f
826	}
827	$_image(plot) configure -data $bytes
828	set time [clock seconds]
829	set date [clock format $time]
830	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
831	if { $_start > 0 } {
832	set finish [clock clicks -milliseconds]
833	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
834	set _start 0
835	}
836	} elseif { $info(type) == "print" } {
837	set tag $this-print-$info(-token)
838	set _hardcopy($tag) $bytes
839	}
840	}
841
842	#
843	# ReceiveDataset --
844	#
845	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
846	if { ![isconnected] } {
847	return
848	}
849	set option [lindex $args 0]
850	switch -- $option {
851	"scalar" {
852	set option [lindex $args 1]
853	switch -- $option {
854	"world" {
855	foreach { x y z value tag } [lrange $args 2 end] break
856	}
857	"pixel" {
858	foreach { x y value tag } [lrange $args 2 end] break
859	}
860	}
861	}
862	"vector" {
863	set option [lindex $args 1]
864	switch -- $option {
865	"world" {
866	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
867	}
868	"pixel" {
869	foreach { x y vx vy vz tag } [lrange $args 2 end] break
870	}
871	}
872	}
873	"names" {
874	foreach { name } [lindex $args 1] {
875	#puts stderr "Dataset: $name"
876	}
877	}
878	default {
879	error "unknown dataset option \"$option\" from server"
880	}
881	}
882	}
883
884	# ----------------------------------------------------------------------
885	# USAGE: Rebuild
886	#
887	# Called automatically whenever something changes that affects the
888	# data in the widget. Clears any existing data and rebuilds the
889	# widget to display new data.
890	# ----------------------------------------------------------------------
891	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
892	set w [winfo width $itk_component(view)]
893	set h [winfo height $itk_component(view)]
894	if { $w < 2 \|\| $h < 2 } {
895	$_dispatcher event -idle !rebuild
896	return
897	}
898
899	set _buffering 1
900	# Turn on buffering of commands to the server. We don't want to
901	# be preempted by a server disconnect/reconnect (which automatically
902	# generates a new call to Rebuild).
903	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
904	set _width $w
905	set _height $h
906	$_arcball resize $w $h
907	DoResize
908	if { $_settings(stretchToFit) } {
909	AdjustSetting stretchToFit
910	}
911	}
912	if { $_reset } {
913	if 1 {
914	# Tell the server the name of the tool, the version, and dataset
915	# that we are rendering. Have to do it here because we don't know
916	# what data objects are using the renderer until be get here.
917	global env
918
919	set info {}
920	set user "???"
921	if { [info exists env(USER)] } {
922	set user $env(USER)
923	}
924	set session "???"
925	if { [info exists env(SESSION)] } {
926	set session $env(SESSION)
927	}
928	lappend info "hub" [exec hostname]
929	lappend info "client" "vtkheightmapviewer"
930	lappend info "user" $user
931	lappend info "session" $session
932	SendCmd "clientinfo [list $info]"
933	}
934	InitSettings isHeightmap background
935	#
936	# Reset the camera and other view parameters
937	#
938	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
939	SendCmd "axis lrot z 90"
940	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
941	$_arcball quaternion $q
942	if {$_settings(isHeightmap) } {
943	if { $_view(ortho)} {
944	SendCmd "camera mode ortho"
945	} else {
946	SendCmd "camera mode persp"
947	}
948	SendCmd "camera reset"
949	DoRotate
950	}
951	PanCamera
952	}
953	set _first ""
954
955	#SendCmd "imgflush"
956
957	set _first ""
958	# Start off with no datasets are visible.
959	SendCmd "dataset visible 0"
960	set scale [GetHeightmapScale]
961	foreach dataobj [get -objects] {
962	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
963	set _first $dataobj
964	}
965	scale $dataobj
966	set _obj2datasets($dataobj) ""
967	foreach comp [$dataobj components] {
968	set tag $dataobj-$comp
969	if { ![info exists _datasets($tag)] } {
970	set bytes [$dataobj vtkdata $comp]
971	if 1 {
972	set f [open /tmp/vtkheightmap.vtk "w"]
973	puts $f $bytes
974	close $f
975	}
976	set length [string length $bytes]
977	if 1 {
978	set info {}
979	lappend info "tool_id" [$dataobj hints toolId]
980	lappend info "tool_name" [$dataobj hints toolName]
981	lappend info "tool_version" [$dataobj hints toolRevision]
982	lappend info "tool_title" [$dataobj hints toolTitle]
983	lappend info "dataset_label" [$dataobj hints label]
984	lappend info "dataset_size" $length
985	lappend info "dataset_tag" $tag
986	SendCmd [list "clientinfo" $info]
987	}
988	append _outbuf "dataset add $tag data follows $length\n"
989	append _outbuf $bytes
990	set _datasets($tag) 1
991	SetObjectStyle $dataobj $comp
992	}
993	lappend _obj2datasets($dataobj) $tag
994	if { [info exists _obj2ovride($dataobj-raise)] } {
995	SendCmd "heightmap visible 1 $tag"
996	}
997	if { ![info exists _comp2scale($tag)] \|\|
998	$_comp2scale($tag) != $scale } {
999	SendCmd "heightmap heightscale $scale $tag"
1000	set _comp2scale($tag) $scale
1001	}
1002	}
1003	}
1004	if { $_first != "" } {
1005	$itk_component(field) choices delete 0 end
1006	$itk_component(fieldmenu) delete 0 end
1007	array unset _fields
1008	foreach cname [$_first components] {
1009	foreach fname [$_first fieldnames $cname] {
1010	if { [info exists _fields($fname)] } {
1011	continue
1012	}
1013	foreach { label units components } \
1014	[$_first fieldinfo $fname] break
1015	$itk_component(field) choices insert end "$fname" "$label"
1016	$itk_component(fieldmenu) add radiobutton -label "$label" \
1017	-value $label -variable [itcl::scope _curFldLabel] \
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	set _curFldLabel $label
1026	}
1027	}
1028	$itk_component(field) value $_curFldLabel
1029	}
1030	InitSettings stretchToFit
1031
1032	if { $_reset } {
1033	SendCmd "axis tickpos outside"
1034	foreach axis { x y z } {
1035	SendCmd "axis lformat $axis %g"
1036	}
1037
1038	foreach axis { x y z } {
1039	set label [$_first hints ${axis}label]
1040	if { $label == "" } {
1041	if {$axis == "z"} {
1042	if { $_curFldName == "component" } {
1043	set label [string toupper $axis]
1044	} else {
1045	set label $_curFldLabel
1046	}
1047	} else {
1048	set label [string toupper $axis]
1049	}
1050	}
1051	# May be a space in the axis label.
1052	SendCmd [list axis name $axis $label]
1053
1054	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1055	set units [lindex $_fields($_curFldName) 1]
1056	} else {
1057	set units [$_first hints ${axis}units]
1058	}
1059	if { $units != "" } {
1060	# May be a space in the axis units.
1061	SendCmd [list axis units $axis $units]
1062	}
1063	}
1064	#
1065	# Reset the camera and other view parameters
1066	#
1067	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
1068	ResetAxes
1069	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1070	$_arcball quaternion $q
1071	if {$_settings(isHeightmap) } {
1072	if { $_view(ortho)} {
1073	SendCmd "camera mode ortho"
1074	} else {
1075	SendCmd "camera mode persp"
1076	}
1077	SendCmd "camera reset"
1078	DoRotate
1079	}
1080	PanCamera
1081	InitSettings axisXGrid axisYGrid axisZGrid \
1082	axisVisible axisLabels
1083	InitSettings heightmapOpacity \
1084	heightmapScale lighting \
1085	colormap field outline \
1086	edges heightmapOpacity wireframe
1087	set _reset 0
1088	}
1089	global readyForNextFrame
1090	set readyForNextFrame 0; # Don't advance to the next frame
1091	set _buffering 0; # Turn off buffering.
1092
1093	# Actually write the commands to the server socket. If it fails, we don't
1094	# care. We're finished here.
1095	blt::busy hold $itk_component(hull)
1096	sendto $_outbuf;
1097	blt::busy release $itk_component(hull)
1098	set _outbuf ""; # Clear the buffer.
1099	}
1100
1101	# ----------------------------------------------------------------------
1102	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1103	#
1104	# Returns a list of server IDs for the current datasets being displayed. This
1105	# is normally a single ID, but it might be a list of IDs if the current data
1106	# object has multiple components.
1107	# ----------------------------------------------------------------------
1108	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1109	set flag [lindex $args 0]
1110	switch -- $flag {
1111	"-all" {
1112	if { [llength $args] > 1 } {
1113	error "CurrentDatasets: can't specify dataobj after \"-all\""
1114	}
1115	set dlist [get -objects]
1116	}
1117	"-visible" {
1118	if { [llength $args] > 1 } {
1119	set dlist {}
1120	set args [lrange $args 1 end]
1121	foreach dataobj $args {
1122	if { [info exists _obj2ovride($dataobj-raise)] } {
1123	lappend dlist $dataobj
1124	}
1125	}
1126	} else {
1127	set dlist [get -visible]
1128	}
1129	}
1130	default {
1131	set dlist $args
1132	}
1133	}
1134	set rlist ""
1135	foreach dataobj $dlist {
1136	foreach comp [$dataobj components] {
1137	set tag $dataobj-$comp
1138	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1139	lappend rlist $tag
1140	}
1141	}
1142	}
1143	return $rlist
1144	}
1145
1146	# ----------------------------------------------------------------------
1147	# USAGE: Zoom in
1148	# USAGE: Zoom out
1149	# USAGE: Zoom reset
1150	#
1151	# Called automatically when the user clicks on one of the zoom
1152	# controls for this widget. Changes the zoom for the current view.
1153	# ----------------------------------------------------------------------
1154	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1155	switch -- $option {
1156	"in" {
1157	set _view(zoom) [expr {$_view(zoom)*1.25}]
1158	SendCmd "camera zoom $_view(zoom)"
1159	}
1160	"out" {
1161	set _view(zoom) [expr {$_view(zoom)*0.8}]
1162	SendCmd "camera zoom $_view(zoom)"
1163	}
1164	"reset" {
1165	array set _view {
1166	qw 0.36
1167	qx 0.25
1168	qy 0.50
1169	qz 0.70
1170	zoom 1.0
1171	xpan 0
1172	ypan 0
1173	}
1174	if { $_first != "" } {
1175	set location [$_first hints camera]
1176	if { $location != "" } {
1177	array set _view $location
1178	}
1179	}
1180	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1181	$_arcball quaternion $q
1182	SendCmd "camera reset"
1183	if {$_settings(isHeightmap) } {
1184	DoRotate
1185	}
1186	}
1187	}
1188	}
1189
1190	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1191	set x $_view(xpan)
1192	set y $_view(ypan)
1193	SendCmd "camera pan $x $y"
1194	}
1195
1196
1197	# ----------------------------------------------------------------------
1198	# USAGE: Rotate click <x> <y>
1199	# USAGE: Rotate drag <x> <y>
1200	# USAGE: Rotate release <x> <y>
1201	#
1202	# Called automatically when the user clicks/drags/releases in the
1203	# plot area. Moves the plot according to the user's actions.
1204	# ----------------------------------------------------------------------
1205	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1206	switch -- $option {
1207	"click" {
1208	$itk_component(view) configure -cursor fleur
1209	set _click(x) $x
1210	set _click(y) $y
1211	}
1212	"drag" {
1213	if {[array size _click] == 0} {
1214	Rotate click $x $y
1215	} else {
1216	set w [winfo width $itk_component(view)]
1217	set h [winfo height $itk_component(view)]
1218	if {$w <= 0 \|\| $h <= 0} {
1219	return
1220	}
1221
1222	if {[catch {
1223	# this fails sometimes for no apparent reason
1224	set dx [expr {double($x-$_click(x))/$w}]
1225	set dy [expr {double($y-$_click(y))/$h}]
1226	}]} {
1227	return
1228	}
1229	if { $dx == 0 && $dy == 0 } {
1230	return
1231	}
1232	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1233	EventuallyRotate $q
1234	set _click(x) $x
1235	set _click(y) $y
1236	}
1237	}
1238	"release" {
1239	Rotate drag $x $y
1240	$itk_component(view) configure -cursor ""
1241	catch {unset _click}
1242	}
1243	default {
1244	error "bad option \"$option\": should be click, drag, release"
1245	}
1246	}
1247	}
1248
1249	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1250	foreach tag [CurrentDatasets -visible] {
1251	SendCmd "dataset getscalar pixel $x $y $tag"
1252	}
1253	}
1254
1255	# ----------------------------------------------------------------------
1256	# USAGE: $this Pan click x y
1257	# $this Pan drag x y
1258	# $this Pan release x y
1259	#
1260	# Called automatically when the user clicks on one of the zoom
1261	# controls for this widget. Changes the zoom for the current view.
1262	# ----------------------------------------------------------------------
1263	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1264	switch -- $option {
1265	"set" {
1266	set w [winfo width $itk_component(view)]
1267	set h [winfo height $itk_component(view)]
1268	set x [expr $x / double($w)]
1269	set y [expr $y / double($h)]
1270	set _view(xpan) [expr $_view(xpan) + $x]
1271	set _view(ypan) [expr $_view(ypan) + $y]
1272	PanCamera
1273	return
1274	}
1275	"click" {
1276	set _click(x) $x
1277	set _click(y) $y
1278	$itk_component(view) configure -cursor hand1
1279	}
1280	"drag" {
1281	if { ![info exists _click(x)] } {
1282	set _click(x) $x
1283	}
1284	if { ![info exists _click(y)] } {
1285	set _click(y) $y
1286	}
1287	set w [winfo width $itk_component(view)]
1288	set h [winfo height $itk_component(view)]
1289	set dx [expr ($_click(x) - $x)/double($w)]
1290	set dy [expr ($_click(y) - $y)/double($h)]
1291	set _click(x) $x
1292	set _click(y) $y
1293	set _view(xpan) [expr $_view(xpan) - $dx]
1294	set _view(ypan) [expr $_view(ypan) - $dy]
1295	PanCamera
1296	}
1297	"release" {
1298	Pan drag $x $y
1299	$itk_component(view) configure -cursor ""
1300	}
1301	default {
1302	error "unknown option \"$option\": should set, click, drag, or release"
1303	}
1304	}
1305	}
1306
1307	# ----------------------------------------------------------------------
1308	# USAGE: InitSettings <what> ?<value>?
1309	#
1310	# Used internally to update rendering settings whenever parameters
1311	# change in the popup settings panel. Sends the new settings off
1312	# to the back end.
1313	# ----------------------------------------------------------------------
1314	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1315	foreach spec $args {
1316	if { [info exists _settings($_first-$spec)] } {
1317	# Reset global setting with dataobj specific setting
1318	set _settings($spec) $_settings($_first-$spec)
1319	}
1320	AdjustSetting $spec
1321	}
1322	}
1323
1324	#
1325	# AdjustSetting --
1326	#
1327	# Changes/updates a specific setting in the widget. There are
1328	# usually user-setable option. Commands are sent to the render
1329	# server.
1330	#
1331	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1332	if { $_beforeConnect } {
1333	return
1334	}
1335	switch -- $what {
1336	"heightmapOpacity" {
1337	set val $_settings(heightmapOpacity)
1338	set sval [expr { 0.01 * double($val) }]
1339	foreach dataset [CurrentDatasets -all] {
1340	SendCmd "heightmap opacity $sval $dataset"
1341	}
1342	}
1343	"wireframe" {
1344	set bool $_settings(wireframe)
1345	foreach dataset [CurrentDatasets -all] {
1346	SendCmd "heightmap wireframe $bool $dataset"
1347	}
1348	}
1349	"colormapVisible" {
1350	set bool $_settings(colormapVisible)
1351	foreach dataset [CurrentDatasets -all] {
1352	SendCmd "heightmap surface $bool $dataset"
1353	}
1354	}
1355	"isolinesVisible" {
1356	set bool $_settings(isolinesVisible)
1357	foreach dataset [CurrentDatasets -all] {
1358	SendCmd "heightmap isolines $bool $dataset"
1359	}
1360	}
1361	"lighting" {
1362	if { $_settings(isHeightmap) } {
1363	set bool $_settings(lighting)
1364	SendCmd "heightmap lighting $bool"
1365	} else {
1366	SendCmd "heightmap lighting 0"
1367	}
1368	}
1369	"edges" {
1370	set bool $_settings(edges)
1371	foreach dataset [CurrentDatasets -all] {
1372	SendCmd "heightmap edges $bool $dataset"
1373	}
1374	}
1375	"axisVisible" {
1376	set bool $_settings(axisVisible)
1377	SendCmd "axis visible all $bool"
1378	}
1379	"axisLabels" {
1380	set bool $_settings(axisLabels)
1381	SendCmd "axis labels all $bool"
1382	}
1383	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1384	set axis [string tolower [string range $what 4 4]]
1385	set bool $_settings($what)
1386	SendCmd "axis grid $axis $bool"
1387	}
1388	"axisFlymode" {
1389	set mode [$itk_component(axisflymode) value]
1390	set mode [$itk_component(axisflymode) translate $mode]
1391	set _settings($what) $mode
1392	SendCmd "axis flymode $mode"
1393	}
1394	"axisMinorTicks" {
1395	set bool $_settings(axisMinorTicks)
1396	foreach axis { x y z } {
1397	SendCmd "axis minticks ${axis} $bool"
1398	}
1399	}
1400	"isolines" {
1401	set n $_settings($what)
1402	EventuallyContour $n
1403	}
1404	"isolinesVisible" {
1405	set bool $_settings($what)
1406	foreach dataset [CurrentDatasets -all] {
1407	SendCmd "heightmap isolines $bool $dataset"
1408	}
1409	}
1410	"colormapVisible" {
1411	set bool $_settings($what)
1412	foreach dataset [CurrentDatasets -all] {
1413	SendCmd "heightmap surface $bool $dataset"
1414	}
1415	}
1416	"background" {
1417	set bgcolor [$itk_component(background) value]
1418	array set fgcolors {
1419	"black" "white"
1420	"white" "black"
1421	"grey" "black"
1422	}
1423	configure -plotbackground $bgcolor \
1424	-plotforeground $fgcolors($bgcolor)
1425	$itk_component(view) delete "legend"
1426	DrawLegend $_curFldName
1427	}
1428	"isolineColor" {
1429	set color [$itk_component(isolinecolor) value]
1430	if { $color == "none" } {
1431	if { $_settings(isolinesVisible) } {
1432	SendCmd "heightmap isolines 0"
1433	set _settings(isolinesVisible) 0
1434	}
1435	} else {
1436	if { !$_settings(isolinesVisible) } {
1437	SendCmd "heightmap isolines 1"
1438	set _settings(isolinesVisible) 1
1439	}
1440	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1441	}
1442	DrawLegend $_curFldName
1443	}
1444	"colormap" {
1445	set color [$itk_component(colormap) value]
1446	set _settings(colormap) $color
1447	if { $color == "none" } {
1448	if { $_settings(colormapVisible) } {
1449	SendCmd "heightmap surface 0"
1450	set _settings(colormapVisible) 0
1451	}
1452	} else {
1453	if { !$_settings(colormapVisible) } {
1454	SendCmd "heightmap surface 1"
1455	set _settings(colormapVisible) 1
1456	}
1457	ResetColormap $color
1458	SendCmd "heightmap colormap $_currentColormap"
1459	}
1460	SendCmdNoWait "heightmap colormode scalar $_curFldName"
1461	SendCmdNoWait "dataset scalar $_curFldName"
1462	EventuallyRequestLegend
1463	}
1464	"heightmapOpacity" {
1465	set val $_settings(heightmapOpacity)
1466	set sval [expr { 0.01 * double($val) }]
1467	foreach dataset [CurrentDatasets -all] {
1468	SendCmd "heightmap opacity $sval $dataset"
1469	}
1470	}
1471	"heightmapScale" {
1472	if { $_settings(isHeightmap) } {
1473	set scale [GetHeightmapScale]
1474	foreach dataset [CurrentDatasets -all] {
1475	SendCmd "heightmap heightscale $scale $dataset"
1476	set _comp2scale($dataset) $scale
1477	}
1478	ResetAxes
1479	}
1480	}
1481	"lighting" {
1482	if { $_settings(isHeightmap) } {
1483	set bool $_settings(lighting)
1484	SendCmd "heightmap lighting $bool"
1485	} else {
1486	SendCmd "heightmap lighting 0"
1487	}
1488	}
1489	"field" {
1490	set label [$itk_component(field) value]
1491	set fname [$itk_component(field) translate $label]
1492	set _settings(field) $fname
1493	if { [info exists _fields($fname)] } {
1494	foreach { label units components } $_fields($fname) break
1495	if { $components > 1 } {
1496	set _colorMode vmag
1497	} else {
1498	set _colorMode scalar
1499	}
1500	set _curFldName $fname
1501	set _curFldLabel $label
1502	} else {
1503	puts stderr "unknown field \"$fname\""
1504	return
1505	}
1506	EventuallyRequestLegend
1507	}
1508	"stretchToFit" {
1509	set bool $_settings(stretchToFit)
1510	if { $bool } {
1511	set heightScale [GetHeightmapScale]
1512	if {$heightScale == 0} {
1513	SendCmd "camera aspect window"
1514	} else {
1515	SendCmd "camera aspect square"
1516	}
1517	} else {
1518	SendCmd "camera aspect native"
1519	}
1520	}
1521	"outline" {
1522	set bool $_settings(outline)
1523	SendCmd "dataset outline $bool"
1524	}
1525	"isHeightmap" {
1526	set bool $_settings(isHeightmap)
1527	incr _buffering
1528	if { $_buffering == 1 } {
1529	set _outbuf ""
1530	}
1531	if { $bool } {
1532	$itk_component(lighting) configure -state normal
1533	if {$_view(ortho)} {
1534	SendCmd "camera mode ortho"
1535	} else {
1536	SendCmd "camera mode persp"
1537	}
1538	} else {
1539	$itk_component(lighting) configure -state disabled
1540	}
1541	set _settings(lighting) $bool
1542	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1543	if { $bool } {
1544	set _settings(heightmapScale) 50
1545	} else {
1546	set _settings(heightmapScale) 50
1547	}
1548	SendCmd "heightmap lighting $bool"
1549	set scale [GetHeightmapScale]
1550	foreach dataset [CurrentDatasets -all] {
1551	SendCmd "heightmap heightscale $scale $dataset"
1552	set _comp2scale($dataset) $scale
1553	}
1554	if {$_settings(stretchToFit)} {
1555	if {$scale == 0} {
1556	SendCmd "camera aspect window"
1557	} else {
1558	SendCmd "camera aspect square"
1559	}
1560	}
1561	ResetAxes
1562	# Fix the mouse bindings for rotation/panning and the
1563	# camera mode. Ideally we'd create a bindtag for these.
1564	set c $itk_component(view)
1565	if { $bool } {
1566	# Bindings for rotation via mouse
1567	bind $c <ButtonPress-1> \
1568	[itcl::code $this Rotate click %x %y]
1569	bind $c <B1-Motion> \
1570	[itcl::code $this Rotate drag %x %y]
1571	bind $c <ButtonRelease-1> \
1572	[itcl::code $this Rotate release %x %y]
1573	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1574	$_arcball quaternion $q
1575	SendCmd "camera orient $q"
1576	} else {
1577	set _settings(heightmapScale) 0
1578	bind $c <ButtonPress-1> {}
1579	bind $c <B1-Motion> {}
1580	bind $c <ButtonRelease-1> {}
1581	SendCmd "camera mode image"
1582	}
1583	incr _buffering -1
1584	if { $_buffering == 0 } {
1585	sendto $_outbuf
1586	set _outbuf ""
1587	}
1588	}
1589	"legendVisible" {
1590	if { !$_settings(legendVisible) } {
1591	$itk_component(view) delete legend
1592	}
1593	DrawLegend $_curFldName
1594	}
1595	default {
1596	error "don't know how to fix $what"
1597	}
1598	}
1599	}
1600
1601	#
1602	# RequestLegend --
1603	#
1604	# Request a new legend from the server. The size of the legend
1605	# is determined from the height of the canvas.
1606	#
1607	# This should be called when
1608	# 1. A new current colormap is set.
1609	# 2. Window is resized.
1610	# 3. The limits of the data have changed. (Just need a redraw).
1611	# 4. Number of isolines have changed. (Just need a redraw).
1612	# 5. Legend becomes visible (Just need a redraw).
1613	#
1614	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1615	set _legendPending 0
1616	set font "Arial 8"
1617	set lineht [font metrics $font -linespace]
1618	set c $itk_component(view)
1619	set w 12
1620	set h [expr {$_height - 2 * ($lineht + 2)}]
1621	if { $h < 1} {
1622	return
1623	}
1624	# Set the legend on the first heightmap dataset.
1625	if { $_currentColormap != "" } {
1626	set cmap $_currentColormap
1627	SendCmdNoWait "legend $cmap scalar $_curFldName {} $w $h 0"
1628	SendCmdNoWait "heightmap colormode scalar $_curFldName"
1629	SendCmdNoWait "dataset scalar $_curFldName"
1630	}
1631	}
1632
1633	#
1634	# ResetAxes --
1635	#
1636	# Set axis z bounds and range
1637	#
1638	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1639	if { ![info exists _limits(v)] \|\| ![info exists _fields($_curFldName)]} {
1640	SendCmd "dataset maprange all"
1641	SendCmd "axis autorange z on"
1642	SendCmd "axis autobounds z on"
1643	return
1644	}
1645	foreach { vmin vmax } $_limits(v) break
1646	foreach { xmin xmax } $_limits(x) break
1647	foreach { ymin ymax } $_limits(y) break
1648	set dataRange [expr $vmax - $vmin]
1649	set boundsRange [expr $xmax - $xmin]
1650	set r [expr $ymax - $ymin]
1651	if {$r > $boundsRange} {
1652	set boundsRange $r
1653	}
1654	if {$dataRange < 1.0e-10} {
1655	set dataScale 1.0
1656	} else {
1657	set dataScale [expr $boundsRange / $dataRange]
1658	}
1659	set heightScale [GetHeightmapScale]
1660	set bMin [expr $heightScale * $dataScale * $vmin]
1661	set bMax [expr $heightScale * $dataScale * $vmax]
1662	SendCmd "dataset maprange explicit $_limits(v) $_curFldName"
1663	SendCmd "axis bounds z $bMin $bMax"
1664	SendCmd "axis range z $_limits(v)"
1665	}
1666
1667	#
1668	# SetCurrentColormap --
1669	#
1670	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { stylelist } {
1671	array set style {
1672	-color BCGYR
1673	-levels 10
1674	-opacity 1.0
1675	}
1676	array set style $stylelist
1677
1678	set name "$style(-color):$style(-levels):$style(-opacity)"
1679	if { ![info exists _colormaps($name)] } {
1680	set stylelist [array get style]
1681	BuildColormap $name $stylelist
1682	set _colormaps($name) $stylelist
1683	}
1684	set _currentColormap $name
1685	}
1686
1687
1688	#
1689	# BuildColormap --
1690	#
1691	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name stylelist } {
1692	array set style $stylelist
1693	set cmap [ColorsToColormap $style(-color)]
1694	if { [llength $cmap] == 0 } {
1695	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1696	}
1697	if { ![info exists _settings(heightmapOpacity)] } {
1698	set _settings(heightmapOpacity) $style(-opacity)
1699	}
1700	set max $_settings(heightmapOpacity)
1701
1702	set wmap "0.0 1.0 1.0 1.0"
1703	SendCmd "colormap add $name { $cmap } { $wmap }"
1704	}
1705
1706	# ----------------------------------------------------------------------
1707	# CONFIGURATION OPTION: -mode
1708	# ----------------------------------------------------------------------
1709	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1710	switch -- $itk_option(-mode) {
1711	"heightmap" {
1712	set _settings(isHeightmap) 1
1713	}
1714	"contour" {
1715	set _settings(isHeightmap) 0
1716	}
1717	default {
1718	error "unknown mode settings \"$itk_option(-mode)\""
1719	}
1720	}
1721	AdjustSetting isHeightmap
1722	}
1723
1724	# ----------------------------------------------------------------------
1725	# CONFIGURATION OPTION: -plotbackground
1726	# ----------------------------------------------------------------------
1727	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1728	if { [isconnected] } {
1729	set rgb [Color2RGB $itk_option(-plotbackground)]
1730	SendCmd "screen bgcolor $rgb"
1731	$itk_component(view) configure -background $itk_option(-plotbackground)
1732	}
1733	}
1734
1735	# ----------------------------------------------------------------------
1736	# CONFIGURATION OPTION: -plotforeground
1737	# ----------------------------------------------------------------------
1738	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1739	if { [isconnected] } {
1740	set rgb [Color2RGB $itk_option(-plotforeground)]
1741	SendCmd "dataset color $rgb"
1742	SendCmd "axis color all $rgb"
1743	}
1744	}
1745
1746	itcl::body Rappture::VtkHeightmapViewer::limits { dataobj } {
1747	lappend limits x [$dataobj limits x]
1748	lappend limits y [$dataobj limits y]
1749	lappend limits v [$dataobj limits v]
1750	return $limits
1751	}
1752
1753	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1754
1755	set fg [option get $itk_component(hull) font Font]
1756	#set bfg [option get $itk_component(hull) boldFont Font]
1757
1758	set inner [$itk_component(main) insert end \
1759	-title "Contour Settings" \
1760	-icon [Rappture::icon volume-on]]
1761	$inner configure -borderwidth 4
1762
1763	checkbutton $inner.legend \
1764	-text "Legend" \
1765	-variable [itcl::scope _settings(legendVisible)] \
1766	-command [itcl::code $this AdjustSetting legendVisible] \
1767	-font "Arial 9"
1768
1769	checkbutton $inner.wireframe \
1770	-text "Wireframe" \
1771	-variable [itcl::scope _settings(wireframe)] \
1772	-command [itcl::code $this AdjustSetting wireframe] \
1773	-font "Arial 9"
1774
1775	itk_component add lighting {
1776	checkbutton $inner.lighting \
1777	-text "Enable Lighting" \
1778	-variable [itcl::scope _settings(lighting)] \
1779	-command [itcl::code $this AdjustSetting lighting] \
1780	-font "Arial 9"
1781	} {
1782	ignore -font
1783	}
1784
1785	checkbutton $inner.edges \
1786	-text "Edges" \
1787	-variable [itcl::scope _settings(edges)] \
1788	-command [itcl::code $this AdjustSetting edges] \
1789	-font "Arial 9"
1790
1791	checkbutton $inner.outline \
1792	-text "Outline" \
1793	-variable [itcl::scope _settings(outline)] \
1794	-command [itcl::code $this AdjustSetting outline] \
1795	-font "Arial 9"
1796
1797	checkbutton $inner.stretch \
1798	-text "Stretch to fit" \
1799	-variable [itcl::scope _settings(stretchToFit)] \
1800	-command [itcl::code $this AdjustSetting stretchToFit] \
1801	-font "Arial 9"
1802
1803	label $inner.field_l -text "Field" -font "Arial 9"
1804	itk_component add field {
1805	Rappture::Combobox $inner.field -width 10 -editable no
1806	}
1807	bind $inner.field <<Value>> \
1808	[itcl::code $this AdjustSetting field]
1809
1810	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1811	itk_component add colormap {
1812	Rappture::Combobox $inner.colormap -width 10 -editable no
1813	}
1814	$inner.colormap choices insert end \
1815	"BCGYR" "BCGYR" \
1816	"BGYOR" "BGYOR" \
1817	"blue" "blue" \
1818	"blue-to-brown" "blue-to-brown" \
1819	"blue-to-orange" "blue-to-orange" \
1820	"blue-to-grey" "blue-to-grey" \
1821	"green-to-magenta" "green-to-magenta" \
1822	"greyscale" "greyscale" \
1823	"nanohub" "nanohub" \
1824	"rainbow" "rainbow" \
1825	"spectral" "spectral" \
1826	"ROYGB" "ROYGB" \
1827	"RYGCB" "RYGCB" \
1828	"brown-to-blue" "brown-to-blue" \
1829	"grey-to-blue" "grey-to-blue" \
1830	"orange-to-blue" "orange-to-blue" \
1831	"none" "none"
1832
1833	$itk_component(colormap) value "BCGYR"
1834	bind $inner.colormap <<Value>> \
1835	[itcl::code $this AdjustSetting colormap]
1836
1837	label $inner.isolinecolor_l -text "Isolines" -font "Arial 9"
1838	itk_component add isolinecolor {
1839	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1840	}
1841	$inner.isolinecolor choices insert end \
1842	"black" "black" \
1843	"blue" "blue" \
1844	"cyan" "cyan" \
1845	"green" "green" \
1846	"grey" "grey" \
1847	"magenta" "magenta" \
1848	"orange" "orange" \
1849	"red" "red" \
1850	"white" "white" \
1851	"none" "none"
1852
1853	$itk_component(isolinecolor) value "black"
1854	bind $inner.isolinecolor <<Value>> \
1855	[itcl::code $this AdjustSetting isolineColor]
1856
1857	label $inner.background_l -text "Background" -font "Arial 9"
1858	itk_component add background {
1859	Rappture::Combobox $inner.background -width 10 -editable no
1860	}
1861	$inner.background choices insert end \
1862	"black" "black" \
1863	"white" "white" \
1864	"grey" "grey"
1865
1866	$itk_component(background) value "white"
1867	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1868
1869	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1870	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1871	-variable [itcl::scope _settings(heightmapOpacity)] \
1872	-width 10 \
1873	-showvalue off \
1874	-command [itcl::code $this AdjustSetting heightmapOpacity]
1875
1876	label $inner.scale_l -text "Scale" -font "Arial 9"
1877	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1878	-variable [itcl::scope _settings(heightmapScale)] \
1879	-width 10 \
1880	-showvalue off \
1881	-command [itcl::code $this AdjustSetting heightmapScale]
1882
1883	blt::table $inner \
1884	0,0 $inner.colormap_l -anchor w -pady 2 \
1885	0,1 $inner.colormap -anchor w -pady 2 -fill x \
1886	1,0 $inner.isolinecolor_l -anchor w -pady 2 \
1887	1,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
1888	2,0 $inner.background_l -anchor w -pady 2 \
1889	2,1 $inner.background -anchor w -pady 2 -fill x \
1890	4,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1891	5,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
1892	6,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1893	7,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1894	8,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1895	9,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
1896	10,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1897	11,0 $inner.opacity_l -anchor w -pady 2 \
1898	11,1 $inner.opacity -fill x -pady 2 \
1899	12,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
1900	12,1 $inner.scale -fill x -pady 2 -cspan 2 \
1901
1902	if { [array size _fields] > 1 } {
1903	blt::table $inner \
1904	3,0 $inner.field_l -anchor w -pady 2 \
1905	3,1 $inner.field -anchor w -pady 2 -fill x
1906	}
1907	blt::table configure $inner r* c* -resize none
1908	blt::table configure $inner r13 c1 -resize expand
1909	}
1910
1911	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
1912
1913	set fg [option get $itk_component(hull) font Font]
1914	#set bfg [option get $itk_component(hull) boldFont Font]
1915
1916	set inner [$itk_component(main) insert end \
1917	-title "Axis Settings" \
1918	-icon [Rappture::icon axis1]]
1919	$inner configure -borderwidth 4
1920
1921	checkbutton $inner.visible \
1922	-text "Axes" \
1923	-variable [itcl::scope _settings(axisVisible)] \
1924	-command [itcl::code $this AdjustSetting axisVisible] \
1925	-font "Arial 9"
1926	checkbutton $inner.labels \
1927	-text "Axis Labels" \
1928	-variable [itcl::scope _settings(axisLabels)] \
1929	-command [itcl::code $this AdjustSetting axisLabels] \
1930	-font "Arial 9"
1931	label $inner.grid_l -text "Grid" -font "Arial 9"
1932	checkbutton $inner.xgrid \
1933	-text "X" \
1934	-variable [itcl::scope _settings(axisXGrid)] \
1935	-command [itcl::code $this AdjustSetting axisXGrid] \
1936	-font "Arial 9"
1937	checkbutton $inner.ygrid \
1938	-text "Y" \
1939	-variable [itcl::scope _settings(axisYGrid)] \
1940	-command [itcl::code $this AdjustSetting axisYGrid] \
1941	-font "Arial 9"
1942	checkbutton $inner.zgrid \
1943	-text "Z" \
1944	-variable [itcl::scope _settings(axisZGrid)] \
1945	-command [itcl::code $this AdjustSetting axisZGrid] \
1946	-font "Arial 9"
1947	checkbutton $inner.minorticks \
1948	-text "Minor Ticks" \
1949	-variable [itcl::scope _settings(axisMinorTicks)] \
1950	-command [itcl::code $this AdjustSetting axisMinorTicks] \
1951	-font "Arial 9"
1952
1953
1954	label $inner.mode_l -text "Mode" -font "Arial 9"
1955
1956	itk_component add axisflymode {
1957	Rappture::Combobox $inner.mode -width 10 -editable no
1958	}
1959	$inner.mode choices insert end \
1960	"static_triad" "static" \
1961	"closest_triad" "closest" \
1962	"furthest_triad" "furthest" \
1963	"outer_edges" "outer"
1964	$itk_component(axisflymode) value "static"
1965	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlymode]
1966
1967	blt::table $inner \
1968	0,0 $inner.visible -anchor w -cspan 4 \
1969	1,0 $inner.labels -anchor w -cspan 4 \
1970	2,0 $inner.minorticks -anchor w -cspan 4 \
1971	4,0 $inner.grid_l -anchor w \
1972	4,1 $inner.xgrid -anchor w \
1973	4,2 $inner.ygrid -anchor w \
1974	4,3 $inner.zgrid -anchor w \
1975	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1976	5,1 $inner.mode -fill x -cspan 3
1977
1978	blt::table configure $inner r* c* -resize none
1979	blt::table configure $inner r7 c6 -resize expand
1980	blt::table configure $inner r3 -height 0.125i
1981	}
1982
1983
1984	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
1985	set inner [$itk_component(main) insert end \
1986	-title "Camera Settings" \
1987	-icon [Rappture::icon camera]]
1988	$inner configure -borderwidth 4
1989
1990	set labels { qx qy qz qw xpan ypan zoom }
1991	set row 0
1992	foreach tag $labels {
1993	label $inner.${tag}label -text $tag -font "Arial 9"
1994	entry $inner.${tag} -font "Arial 9" -bg white \
1995	-textvariable [itcl::scope _view($tag)]
1996	bind $inner.${tag} <KeyPress-Return> \
1997	[itcl::code $this camera set ${tag}]
1998	blt::table $inner \
1999	$row,0 $inner.${tag}label -anchor e -pady 2 \
2000	$row,1 $inner.${tag} -anchor w -pady 2
2001	blt::table configure $inner r$row -resize none
2002	incr row
2003	}
2004	checkbutton $inner.ortho \
2005	-text "Orthographic Projection" \
2006	-variable [itcl::scope _view(ortho)] \
2007	-command [itcl::code $this camera set ortho] \
2008	-font "Arial 9"
2009	blt::table $inner \
2010	$row,0 $inner.ortho -columnspan 2 -anchor w -pady 2
2011	blt::table configure $inner r$row -resize none
2012	incr row
2013
2014	blt::table configure $inner c0 c1 -resize none
2015	blt::table configure $inner c2 -resize expand
2016	blt::table configure $inner r$row -resize expand
2017	}
2018
2019	#
2020	# camera --
2021	#
2022	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2023	switch -- $option {
2024	"show" {
2025	puts [array get _view]
2026	}
2027	"set" {
2028	set who [lindex $args 0]
2029	set x $_view($who)
2030	set code [catch { string is double $x } result]
2031	if { $code != 0 \|\| !$result } {
2032	return
2033	}
2034	switch -- $who {
2035	"ortho" {
2036	if {$_view(ortho)} {
2037	SendCmd "camera mode ortho"
2038	} else {
2039	SendCmd "camera mode persp"
2040	}
2041	}
2042	"xpan" - "ypan" {
2043	PanCamera
2044	}
2045	"qx" - "qy" - "qz" - "qw" {
2046	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2047	$_arcball quaternion $q
2048	EventuallyRotate $q
2049	}
2050	"zoom" {
2051	SendCmd "camera zoom $_view(zoom)"
2052	}
2053	}
2054	}
2055	}
2056	}
2057
2058	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2059	set bytes ""
2060	foreach dataobj [get] {
2061	foreach comp [$dataobj components] {
2062	set tag $dataobj-$comp
2063	#set contents [ConvertToVtkData $dataobj $comp]
2064	set contents [$dataobj vtkdata $comp]
2065	append bytes "$contents\n\n"
2066	}
2067	}
2068	return [list .vtk $bytes]
2069	}
2070
2071	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2072	if { [image width $_image(download)] > 0 &&
2073	[image height $_image(download)] > 0 } {
2074	set bytes [$_image(download) data -format "jpeg -quality 100"]
2075	set bytes [Rappture::encoding::decode -as b64 $bytes]
2076	return [list .jpg $bytes]
2077	}
2078	return ""
2079	}
2080
2081	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2082	Rappture::Balloon $popup \
2083	-title "[Rappture::filexfer::label downloadWord] as..."
2084	set inner [$popup component inner]
2085	label $inner.summary -text "" -anchor w
2086	radiobutton $inner.vtk_button -text "VTK data file" \
2087	-variable [itcl::scope _downloadPopup(format)] \
2088	-font "Arial 9 " \
2089	-value vtk
2090	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2091	radiobutton $inner.image_button -text "Image File" \
2092	-variable [itcl::scope _downloadPopup(format)] \
2093	-font "Arial 9 " \
2094	-value image
2095	Rappture::Tooltip::for $inner.image_button \
2096	"Save as digital image."
2097
2098	button $inner.ok -text "Save" \
2099	-highlightthickness 0 -pady 2 -padx 3 \
2100	-command $command \
2101	-compound left \
2102	-image [Rappture::icon download]
2103
2104	button $inner.cancel -text "Cancel" \
2105	-highlightthickness 0 -pady 2 -padx 3 \
2106	-command [list $popup deactivate] \
2107	-compound left \
2108	-image [Rappture::icon cancel]
2109
2110	blt::table $inner \
2111	0,0 $inner.summary -cspan 2 \
2112	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2113	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2114	4,1 $inner.cancel -width .9i -fill y \
2115	4,0 $inner.ok -padx 2 -width .9i -fill y
2116	blt::table configure $inner r3 -height 4
2117	blt::table configure $inner r4 -pady 4
2118	raise $inner.image_button
2119	$inner.vtk_button invoke
2120	return $inner
2121	}
2122
2123	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2124	# Parse style string.
2125	set tag $dataobj-$comp
2126	array set style {
2127	-color BCGYR
2128	-edges 0
2129	-edgecolor black
2130	-lighting 1
2131	-linewidth 1.0
2132	-levels 10
2133	-visible 1
2134	}
2135	if { $_currentColormap == "" } {
2136	set stylelist [$dataobj style $comp]
2137	if { $stylelist != "" } {
2138	array set style $stylelist
2139	set stylelist [array get style]
2140	SetCurrentColormap $stylelist
2141	}
2142	$itk_component(colormap) value $style(-color)
2143	}
2144	set _numContours $style(-levels)
2145	set scale [GetHeightmapScale]
2146	SendCmd "heightmap add numcontours $_numContours $scale $tag"
2147	set _comp2scale($tag) $_settings(heightmapScale)
2148	SendCmd "heightmap edges $_settings(edges) $tag"
2149	SendCmd "heightmap wireframe $_settings(wireframe) $tag"
2150	SendCmd "heightmap colormap $_currentColormap $tag"
2151	set color [$itk_component(isolinecolor) value]
2152	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2153	}
2154
2155	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2156	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2157	return 0
2158	}
2159	return 1
2160	}
2161
2162	# ----------------------------------------------------------------------
2163	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2164	#
2165	# Invoked automatically whenever the "legend" command comes in from
2166	# the rendering server. Indicates that binary image data with the
2167	# specified <size> will follow.
2168	# ----------------------------------------------------------------------
2169	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2170	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2171	set _title $title
2172	regsub {\(mag\)} $title "" _title
2173	if { [isconnected] } {
2174	set bytes [ReceiveBytes $size]
2175	if { ![info exists _image(legend)] } {
2176	set _image(legend) [image create photo]
2177	}
2178	$_image(legend) configure -data $bytes
2179	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2180	if { [catch {DrawLegend $_title} errs] != 0 } {
2181	global errorInfo
2182	puts stderr "errs=$errs errorInfo=$errorInfo"
2183	}
2184	}
2185	}
2186
2187	#
2188	# DrawLegend --
2189	#
2190	# Draws the legend in the own canvas on the right side of the plot area.
2191	#
2192	itcl::body Rappture::VtkHeightmapViewer::DrawLegend { fname } {
2193	set c $itk_component(view)
2194	set w [winfo width $c]
2195	set h [winfo height $c]
2196	set font "Arial 8"
2197	set lineht [font metrics $font -linespace]
2198
2199	if { $fname == "component" } {
2200	set title ""
2201	} else {
2202	if { [info exists _fields($fname)] } {
2203	foreach { title units } $_fields($fname) break
2204	if { $units != "" } {
2205	set title [format "%s (%s)" $title $units]
2206	}
2207	} else {
2208	set title $fname
2209	}
2210	}
2211	set x [expr $w - 2]
2212	if { !$_settings(legendVisible) } {
2213	$c delete legend
2214	return
2215	}
2216	if { [$c find withtag "legend"] == "" } {
2217	set y 2
2218	# If there's a legend title, create a text item for the title.
2219	if { $title != "" } {
2220	$c create text $x $y \
2221	-anchor ne \
2222	-fill $itk_option(-plotforeground) -tags "title legend" \
2223	-font $font
2224	incr y $lineht
2225	}
2226	$c create text $x $y \
2227	-anchor ne \
2228	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2229	-font $font
2230	incr y $lineht
2231	$c create image $x $y \
2232	-anchor ne \
2233	-image $_image(legend) -tags "colormap legend"
2234	$c create text $x [expr {$h-2}] \
2235	-anchor se \
2236	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2237	-font $font
2238	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2239	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2240	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2241	}
2242	$c delete isoline
2243	set x2 $x
2244	set iw [image width $_image(legend)]
2245	set ih [image height $_image(legend)]
2246	set x1 [expr $x2 - ($iw*12)/10]
2247	set color [$itk_component(isolinecolor) value]
2248	# Draw the isolines on the legend.
2249	if { $color != "none" && $_numContours > 0 } {
2250	set pixels [blt::vector create \#auto]
2251	set values [blt::vector create \#auto]
2252	set range [image height $_image(legend)]
2253	# Order of pixels is max to min (max is at top of legend).
2254	$pixels seq $ih 0 $_numContours
2255	set offset [expr 2 + $lineht]
2256	# If there's a legend title, increase the offset by the line height.
2257	if { $title != "" } {
2258	incr offset $lineht
2259	}
2260	$pixels expr {round($pixels + $offset)}
2261	# Order of values is min to max.
2262	foreach { vmin vmax } $_limits(v) break
2263	$values seq $vmin $vmax $_numContours
2264	set tags "isoline legend"
2265	foreach pos [$pixels range 0 end] value [$values range end 0] {
2266	set y1 [expr int($pos)]
2267	set id [$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags]
2268	$c bind $id <Enter> [itcl::code $this EnterIsoline %x %y $value]
2269	$c bind $id <Leave> [itcl::code $this LeaveIsoline]
2270	}
2271	blt::vector destroy $pixels $values
2272	}
2273
2274	$c bind title <ButtonPress> [itcl::code $this Combo post]
2275	$c bind title <Enter> [itcl::code $this Combo activate]
2276	$c bind title <Leave> [itcl::code $this Combo deactivate]
2277	# Reset the item coordinates according the current size of the plot.
2278	$c itemconfigure title -text $title
2279	if { [info exists _limits(v)] } {
2280	foreach { vmin vmax } $_limits(v) break
2281	$c itemconfigure vmin -text [format %g $vmin]
2282	$c itemconfigure vmax -text [format %g $vmax]
2283	}
2284	set y 2
2285	# If there's a legend title, move the title to the correct position
2286	if { $title != "" } {
2287	$c coords title $x $y
2288	incr y $lineht
2289	}
2290	$c coords vmax $x $y
2291	incr y $lineht
2292	$c coords colormap $x $y
2293	$c coords vmin $x [expr {$h - 2}]
2294	}
2295
2296	#
2297	# EnterIsoline --
2298	#
2299	itcl::body Rappture::VtkHeightmapViewer::EnterIsoline { x y value } {
2300	SetIsolineTip $x $y $value
2301	}
2302
2303	#
2304	# LeaveIsoline --
2305	#
2306	itcl::body Rappture::VtkHeightmapViewer::LeaveIsoline { } {
2307	Rappture::Tooltip::tooltip cancel
2308	.rappturetooltip configure -icon ""
2309	}
2310
2311	#
2312	# SetIsolineTip --
2313	#
2314	itcl::body Rappture::VtkHeightmapViewer::SetIsolineTip { x y value } {
2315	set c $itk_component(view)
2316	.rappturetooltip configure -icon ""
2317
2318	# Compute the position of the tip
2319	set tx [expr $x + 15]
2320	set ty [expr $y - 5]
2321	Rappture::Tooltip::text $c "Isoline $value"
2322	Rappture::Tooltip::tooltip show $c +$tx,+$ty
2323	}
2324
2325
2326	#
2327	# EnterLegend --
2328	#
2329	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2330	SetLegendTip $x $y
2331	}
2332
2333	#
2334	# MotionLegend --
2335	#
2336	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2337	Rappture::Tooltip::tooltip cancel
2338	set c $itk_component(view)
2339	SetLegendTip $x $y
2340	}
2341
2342	#
2343	# LeaveLegend --
2344	#
2345	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2346	Rappture::Tooltip::tooltip cancel
2347	.rappturetooltip configure -icon ""
2348	}
2349
2350	#
2351	# SetLegendTip --
2352	#
2353	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2354	set c $itk_component(view)
2355	set w [winfo width $c]
2356	set h [winfo height $c]
2357	set font "Arial 8"
2358	set lineht [font metrics $font -linespace]
2359
2360	set ih [image height $_image(legend)]
2361	set iy [expr $y - ($lineht + 2)]
2362
2363	if { [info exists _fields($_title)] } {
2364	foreach { title units } $_fields($_title) break
2365	if { $units != "" } {
2366	set title [format "%s (%s)" $title $units]
2367	}
2368	} else {
2369	set title $_title
2370	}
2371	# If there's a legend title, increase the offset by the line height.
2372	if { $title != "" } {
2373	incr iy $lineht
2374	}
2375
2376	# Make a swatch of the selected color
2377	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2378	#puts stderr "out of range: $iy"
2379	return
2380	}
2381
2382	if { ![info exists _image(swatch)] } {
2383	set _image(swatch) [image create photo -width 24 -height 24]
2384	}
2385	set color [eval format "\#%02x%02x%02x" $pixel]
2386	$_image(swatch) put black -to 0 0 23 23
2387	$_image(swatch) put $color -to 1 1 22 22
2388	.rappturetooltip configure -icon $_image(swatch)
2389
2390	# Compute the value of the point
2391	if { [info exists _limits(v)] } {
2392	foreach { vmin vmax } $_limits(v) break
2393	set t [expr 1.0 - (double($iy) / double($ih-1))]
2394	set value [expr $t * ($vmax - $vmin) + $vmin]
2395	} else {
2396	set value 0.0
2397	}
2398	set tipx [expr $x + 15]
2399	set tipy [expr $y - 5]
2400	Rappture::Tooltip::text $c "$title $value"
2401	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2402	}
2403
2404	# ----------------------------------------------------------------------
2405	# USAGE: _dropdown post
2406	# USAGE: _dropdown unpost
2407	# USAGE: _dropdown select
2408	#
2409	# Used internally to handle the dropdown list for this combobox. The
2410	# post/unpost options are invoked when the list is posted or unposted
2411	# to manage the relief of the controlling button. The select option
2412	# is invoked whenever there is a selection from the list, to assign
2413	# the value back to the gauge.
2414	# ----------------------------------------------------------------------
2415	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2416	set c $itk_component(view)
2417	switch -- $option {
2418	post {
2419	foreach { x1 y1 x2 y2 } [$c bbox title] break
2420	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2421	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2422	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2423	tk_popup $itk_component(fieldmenu) $x $y
2424	}
2425	activate {
2426	$c itemconfigure title -fill red
2427	}
2428	deactivate {
2429	$c itemconfigure title -fill $itk_option(-plotforeground)
2430	}
2431	invoke {
2432	$itk_component(field) value $_curFldLabel
2433	AdjustSetting field
2434	}
2435	default {
2436	error "bad option \"$option\": should be post, unpost, select"
2437	}
2438	}
2439	}
2440
2441	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2442	if { $_settings(isHeightmap) } {
2443	set val $_settings(heightmapScale)
2444	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2445	return $sval
2446	}
2447	set sval 0
2448	}
2449
2450	itcl::body Rappture::VtkHeightmapViewer::ResetColormap { color } {
2451	array set style {
2452	-color BCGYR
2453	-levels 10
2454	-opacity 1.0
2455	}
2456	if { [info exists _colormap($_currentColormap)] } {
2457	array set style $_colormap($_currentColormap)
2458	}
2459	set style(-color) $color
2460	SetCurrentColormap [array get style]
2461	}
2462

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