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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 3638

Last change on this file since 3638 was 3638, checked in by gah, 11 years ago
fix ruby getstring for binary strings
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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkheightmapviewer - Vtk heightmap viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkHeightmapViewer.width 4i widgetDefault
19	option add VtkHeightmapViewercursor crosshair widgetDefault
20	option add *VtkHeightmapViewer.height 4i widgetDefault
21	option add *VtkHeightmapViewer.foreground black widgetDefault
22	option add *VtkHeightmapViewer.controlBackground gray widgetDefault
23	option add *VtkHeightmapViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkHeightmapViewer.plotBackground black widgetDefault
25	option add *VtkHeightmapViewer.plotForeground white widgetDefault
26	option add *VtkHeightmapViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkHeightmapViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkHeightmapViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkHeightmapViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40	itk_option define -mode mode Mode "contour"
41
42	constructor { hostlist args } {
43	Rappture::VisViewer::constructor $hostlist
44	} {
45	# defined below
46	}
47	destructor {
48	# defined below
49	}
50	public proc SetServerList { namelist } {
51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
52	}
53	public method add {dataobj {settings ""}}
54	public method camera {option args}
55	public method delete {args}
56	public method disconnect {}
57	public method download {option args}
58	public method get {args}
59	public method isconnected {}
60	public method limits3 { dataobj }
61	public method parameters {title args} {
62	# do nothing
63	}
64	public method scale {args}
65
66	protected method Connect {}
67	protected method CurrentDatasets {args}
68	protected method Disconnect {}
69	protected method DoResize {}
70	protected method DoRotate {}
71	protected method AdjustSetting {what {value ""}}
72	protected method AdjustMode {}
73	protected method InitSettings { args }
74	protected method Pan {option x y}
75	protected method Pick {x y}
76	protected method Rebuild {}
77	protected method ReceiveDataset { args }
78	protected method ReceiveImage { args }
79	protected method ReceiveLegend { colormap title min max size }
80	protected method Rotate {option x y}
81	protected method Zoom {option}
82
83	# The following methods are only used by this class.
84	private method BuildAxisTab {}
85	private method BuildCameraTab {}
86	private method BuildColormap { name }
87	private method BuildContourTab {}
88	private method BuildDownloadPopup { widget command }
89	private method Combo { option }
90	private method ConvertToVtkData { dataobj comp }
91	private method DrawLegend {}
92	private method EnterLegend { x y }
93	private method EventuallyRequestLegend {}
94	private method EventuallyResize { w h }
95	private method EventuallyRotate { q }
96	private method GetImage { args }
97	private method GetVtkData { args }
98	private method IsValidObject { dataobj }
99	private method LeaveLegend {}
100	private method MotionLegend { x y }
101	private method PanCamera {}
102	private method RequestLegend {}
103	private method SetCurrentColormap { color }
104	private method SetLegendTip { x y }
105	private method SetObjectStyle { dataobj comp }
106	private method GetHeightmapScale {}
107	private method ResetAxes {}
108	private method SetOrientation { side }
109	private method UpdateContourList {}
110
111	private variable _arcball ""
112	private variable _dlist "" ; # list of data objects
113	private variable _obj2datasets
114	private variable _obj2ovride ; # maps dataobj => style override
115	private variable _comp2scale; # maps dataset to the heightmap scale.
116	private variable _datasets ; # contains all the dataobj-component
117	; # datasets in the server
118	private variable _colormaps ; # contains all the colormaps
119	; # in the server.
120
121	# The name of the current colormap used. The colormap is global to all
122	# heightmaps displayed.
123	private variable _currentColormap ""
124	private variable _currentNumIsolines -1
125	private variable _currentOpacity ""
126
127	private variable _click ; # info used for rotate operations
128	private variable _limits ; # Holds overall limits for all dataobjs
129	# using the viewer.
130	private variable _view ; # view params for 3D view
131	private variable _settings
132	private variable _changed
133	private variable _initialStyle ""; # First found style in dataobjects.
134	private variable _reset 1; # Indicates if camera needs to be reset
135	# to starting position.
136	private variable _beforeConnect 1; # Indicates if camera needs to be reset
137	# to starting position.
138
139	private variable _first "" ; # This is the topmost dataset.
140	private variable _start 0
141	private variable _isolines
142	private variable _contourList ""
143
144	common _downloadPopup; # download options from popup
145	private common _hardcopy
146	private variable _width 0
147	private variable _height 0
148	private variable _legendWidth 0
149	private variable _legendHeight 0
150	private variable _resizePending 0
151	private variable _rotatePending 0
152	private variable _legendPending 0
153	private variable _fieldNames {}
154	private variable _fields
155	private variable _curFldName ""
156	private variable _curFldLabel ""
157	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
158	}
159
160	itk::usual VtkHeightmapViewer {
161	keep -background -foreground -cursor -font
162	keep -plotbackground -plotforeground -mode
163	}
164
165	# ----------------------------------------------------------------------
166	# CONSTRUCTOR
167	# ----------------------------------------------------------------------
168	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
169	set _serverType "vtkvis"
170
171	EnableWaitDialog 900
172	# Rebuild event
173	$_dispatcher register !rebuild
174	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
175
176	# Resize event
177	$_dispatcher register !resize
178	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
179
180	# Rotate event
181	$_dispatcher register !rotate
182	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
183
184	# Legend event
185	$_dispatcher register !legend
186	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
187
188	#
189	# Populate parser with commands handle incoming requests
190	#
191	$_parser alias image [itcl::code $this ReceiveImage]
192	$_parser alias dataset [itcl::code $this ReceiveDataset]
193	$_parser alias legend [itcl::code $this ReceiveLegend]
194
195	# Initialize the view to some default parameters.
196	array set _view {
197	qw 0.36
198	qx 0.25
199	qy 0.50
200	qz 0.70
201	zoom 1.0
202	xpan 0
203	ypan 0
204	ortho 0
205	}
206	set _arcball [blt::arcball create 100 100]
207	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
208	$_arcball quaternion $q
209
210	array set _settings {
211	axisFlymode "static"
212	axisMinorTicks 1
213	stretchToFit 0
214	axisLabels 1
215	axisVisible 1
216	axisXGrid 0
217	axisYGrid 0
218	axisZGrid 0
219	colormapVisible 1
220	colormapDiscrete 0
221	edges 0
222	field "Default"
223	heightmapScale 50
224	isHeightmap 0
225	isolineColor black
226	isolinesVisible 1
227	legendVisible 1
228	lighting 1
229	saveLighting 1
230	numIsolines 10
231	opacity 100
232	outline 0
233	wireframe 0
234	saveOpacity 100
235	saveOutline 0
236	}
237	array set _changed {
238	opacity 0
239	colormap 0
240	numIsolines 0
241	}
242	itk_component add view {
243	canvas $itk_component(plotarea).view \
244	-highlightthickness 0 -borderwidth 0
245	} {
246	usual
247	ignore -highlightthickness -borderwidth -background
248	}
249
250	itk_component add fieldmenu {
251	menu $itk_component(plotarea).menu \
252	-relief flat \
253	-tearoff no
254	} {
255	usual
256	ignore -background -foreground -relief -tearoff
257	}
258	set c $itk_component(view)
259	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
260	bind $c <4> [itcl::code $this Zoom in 0.25]
261	bind $c <5> [itcl::code $this Zoom out 0.25]
262	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
263	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
264	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
265	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
266	bind $c <Enter> "focus %W"
267	bind $c <Control-F1> [itcl::code $this ToggleConsole]
268
269	# Fix the scrollregion in case we go off screen
270	$c configure -scrollregion [$c bbox all]
271
272	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
273	set _map(cwidth) -1
274	set _map(cheight) -1
275	set _map(zoom) 1.0
276	set _map(original) ""
277
278	set f [$itk_component(main) component controls]
279	itk_component add reset {
280	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
281	-highlightthickness 0 \
282	-image [Rappture::icon reset-view] \
283	-command [itcl::code $this Zoom reset]
284	} {
285	usual
286	ignore -highlightthickness
287	}
288	pack $itk_component(reset) -side top -padx 2 -pady 2
289	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
290
291	itk_component add zoomin {
292	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
293	-highlightthickness 0 \
294	-image [Rappture::icon zoom-in] \
295	-command [itcl::code $this Zoom in]
296	} {
297	usual
298	ignore -highlightthickness
299	}
300	pack $itk_component(zoomin) -side top -padx 2 -pady 2
301	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
302
303	itk_component add zoomout {
304	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
305	-highlightthickness 0 \
306	-image [Rappture::icon zoom-out] \
307	-command [itcl::code $this Zoom out]
308	} {
309	usual
310	ignore -highlightthickness
311	}
312	pack $itk_component(zoomout) -side top -padx 2 -pady 2
313	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
314
315	itk_component add mode {
316	Rappture::PushButton $f.mode \
317	-onimage [Rappture::icon surface] \
318	-offimage [Rappture::icon surface] \
319	-variable [itcl::scope _settings(isHeightmap)] \
320	-command [itcl::code $this AdjustSetting isHeightmap] \
321	}
322	Rappture::Tooltip::for $itk_component(mode) \
323	"Toggle the surface/contour on/off"
324	pack $itk_component(mode) -padx 2 -pady 2
325
326	if { [catch {
327	BuildContourTab
328	BuildAxisTab
329	BuildCameraTab
330	} errs] != 0 } {
331	global errorInfo
332	puts stderr "errs=$errs errorInfo=$errorInfo"
333	}
334	set _image(legend) [image create photo]
335
336	# Hack around the Tk panewindow. The problem is that the requested
337	# size of the 3d view isn't set until an image is retrieved from
338	# the server. So the panewindow uses the tiny size.
339	set w 10000
340	pack forget $itk_component(view)
341	blt::table $itk_component(plotarea) \
342	0,0 $itk_component(view) -fill both -reqwidth $w
343	blt::table configure $itk_component(plotarea) c1 -resize none
344
345	# Bindings for panning via mouse
346	bind $itk_component(view) <ButtonPress-2> \
347	[itcl::code $this Pan click %x %y]
348	bind $itk_component(view) <B2-Motion> \
349	[itcl::code $this Pan drag %x %y]
350	bind $itk_component(view) <ButtonRelease-2> \
351	[itcl::code $this Pan release %x %y]
352
353	#bind $itk_component(view) <ButtonRelease-3> \
354	# [itcl::code $this Pick %x %y]
355
356	# Bindings for panning via keyboard
357	bind $itk_component(view) <KeyPress-Left> \
358	[itcl::code $this Pan set -10 0]
359	bind $itk_component(view) <KeyPress-Right> \
360	[itcl::code $this Pan set 10 0]
361	bind $itk_component(view) <KeyPress-Up> \
362	[itcl::code $this Pan set 0 -10]
363	bind $itk_component(view) <KeyPress-Down> \
364	[itcl::code $this Pan set 0 10]
365	bind $itk_component(view) <Shift-KeyPress-Left> \
366	[itcl::code $this Pan set -2 0]
367	bind $itk_component(view) <Shift-KeyPress-Right> \
368	[itcl::code $this Pan set 2 0]
369	bind $itk_component(view) <Shift-KeyPress-Up> \
370	[itcl::code $this Pan set 0 -2]
371	bind $itk_component(view) <Shift-KeyPress-Down> \
372	[itcl::code $this Pan set 0 2]
373
374	# Bindings for zoom via keyboard
375	bind $itk_component(view) <KeyPress-Prior> \
376	[itcl::code $this Zoom out]
377	bind $itk_component(view) <KeyPress-Next> \
378	[itcl::code $this Zoom in]
379
380	bind $itk_component(view) <Enter> "focus $itk_component(view)"
381
382	if {[string equal "x11" [tk windowingsystem]]} {
383	# Bindings for zoom via mouse
384	bind $itk_component(view) <4> [itcl::code $this Zoom out]
385	bind $itk_component(view) <5> [itcl::code $this Zoom in]
386	}
387
388	set _image(download) [image create photo]
389
390	eval itk_initialize $args
391	Connect
392	set _beforeConnect 0
393	}
394
395	# ----------------------------------------------------------------------
396	# DESTRUCTOR
397	# ----------------------------------------------------------------------
398	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
399	Disconnect
400	image delete $_image(plot)
401	image delete $_image(download)
402	catch { blt::arcball destroy $_arcball }
403	}
404
405	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
406	if { $_width < 2 } {
407	set _width 500
408	}
409	if { $_height < 2 } {
410	set _height 500
411	}
412	set _start [clock clicks -milliseconds]
413	SendCmd "screen size [expr $_width - 20] $_height"
414
415	set font "Arial 8"
416	set lh [font metrics $font -linespace]
417	set h [expr {$_height - 2 * ($lh + 2)}]
418	if { $h != $_legendHeight } {
419	EventuallyRequestLegend
420	} else {
421	DrawLegend
422	}
423	set _resizePending 0
424	}
425
426	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
427	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
428	SendCmd "camera orient $q"
429	set _rotatePending 0
430	}
431
432	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
433	if { !$_legendPending } {
434	set _legendPending 1
435	$_dispatcher event -idle !legend
436	}
437	}
438
439	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
440	set _width $w
441	set _height $h
442	$_arcball resize $w $h
443	if { !$_resizePending } {
444	set _resizePending 1
445	$_dispatcher event -after 250 !resize
446	}
447	}
448
449	set rotate_delay 100
450
451	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
452	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
453	if { !$_rotatePending } {
454	set _rotatePending 1
455	global rotate_delay
456	$_dispatcher event -after $rotate_delay !rotate
457	}
458	}
459
460	# ----------------------------------------------------------------------
461	# USAGE: add <dataobj> ?<settings>?
462	#
463	# Clients use this to add a data object to the plot. The optional
464	# <settings> are used to configure the plot. Allowed settings are
465	# -color, -brightness, -width, -linestyle, and -raise.
466	# ----------------------------------------------------------------------
467	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
468	if { ![$dataobj isvalid] } {
469	return; # Object doesn't contain valid data.
470	}
471	array set params {
472	-color auto
473	-width 1
474	-linestyle solid
475	-brightness 0
476	-raise 0
477	-description ""
478	-param ""
479	-type ""
480	}
481	array set params $settings
482	set params(-description) ""
483	set params(-param) ""
484	foreach {opt val} $settings {
485	if {![info exists params($opt)]} {
486	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
487	}
488	set params($opt) $val
489	}
490	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
491	# can't handle -autocolors yet
492	set params(-color) white
493	}
494	set pos [lsearch -exact $dataobj $_dlist]
495	if {$pos < 0} {
496	lappend _dlist $dataobj
497	}
498	set _obj2ovride($dataobj-color) $params(-color)
499	set _obj2ovride($dataobj-width) $params(-width)
500	set _obj2ovride($dataobj-raise) $params(-raise)
501	$_dispatcher event -idle !rebuild
502	}
503
504
505	# ----------------------------------------------------------------------
506	# USAGE: delete ?<dataobj1> <dataobj2> ...?
507	#
508	# Clients use this to delete a dataobj from the plot. If no dataobjs
509	# are specified, then all dataobjs are deleted. No data objects are
510	# deleted. They are only removed from the display list.
511	#
512	# ----------------------------------------------------------------------
513	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
514	if { [llength $args] == 0} {
515	set args $_dlist
516	}
517	# Delete all specified dataobjs
518	set changed 0
519	foreach dataobj $args {
520	set pos [lsearch -exact $_dlist $dataobj]
521	if { $pos < 0 } {
522	continue; # Don't know anything about it.
523	}
524	# Remove it from the dataobj list.
525	set _dlist [lreplace $_dlist $pos $pos]
526	array unset _obj2ovride $dataobj-*
527	array unset _settings $dataobj-*
528	# Append to the end of the dataobj list.
529	#lappend _dlist $dataobj
530	set changed 1
531	}
532	# If anything changed, then rebuild the plot
533	if { $changed } {
534	$_dispatcher event -idle !rebuild
535	}
536	}
537
538	# ----------------------------------------------------------------------
539	# USAGE: get ?-objects?
540	# USAGE: get ?-visible?
541	# USAGE: get ?-image view?
542	#
543	# Clients use this to query the list of objects being plotted, in
544	# order from bottom to top of this result. The optional "-image"
545	# flag can also request the internal images being shown.
546	# ----------------------------------------------------------------------
547	itcl::body Rappture::VtkHeightmapViewer::get {args} {
548	if {[llength $args] == 0} {
549	set args "-objects"
550	}
551	set op [lindex $args 0]
552	switch -- $op {
553	"-objects" {
554	# put the dataobj list in order according to -raise options
555	set dlist {}
556	foreach dataobj $_dlist {
557	if { ![IsValidObject $dataobj] } {
558	continue
559	}
560	if {[info exists _obj2ovride($dataobj-raise)] &&
561	$_obj2ovride($dataobj-raise)} {
562	set dlist [linsert $dlist 0 $dataobj]
563	} else {
564	lappend dlist $dataobj
565	}
566	}
567	return $dlist
568	}
569	"-visible" {
570	set dlist {}
571	foreach dataobj $_dlist {
572	if { ![IsValidObject $dataobj] } {
573	continue
574	}
575	if { ![info exists _obj2ovride($dataobj-raise)] } {
576	# No setting indicates that the object isn't visible.
577	continue
578	}
579	# Otherwise use the -raise parameter to put the object to
580	# the front of the list.
581	if { $_obj2ovride($dataobj-raise) } {
582	set dlist [linsert $dlist 0 $dataobj]
583	} else {
584	lappend dlist $dataobj
585	}
586	}
587	return $dlist
588	}
589	-image {
590	if {[llength $args] != 2} {
591	error "wrong # args: should be \"get -image view\""
592	}
593	switch -- [lindex $args end] {
594	view {
595	return $_image(plot)
596	}
597	default {
598	error "bad image name \"[lindex $args end]\": should be view"
599	}
600	}
601	}
602	default {
603	error "bad option \"$op\": should be -objects or -image"
604	}
605	}
606	}
607
608	#
609	# scale --
610	#
611	# This gets called either incrementally as new simulations are
612	# added or all at once as a sequence of heightmaps.
613	# This accounts for all objects--even those not showing on the
614	# screen. Because of this, the limits are appropriate for all
615	# objects as the user scans through data in the ResultSet viewer.
616	#
617	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
618	foreach dataobj $args {
619	if { ![$dataobj isvalid] } {
620	continue; # Object doesn't contain valid data.
621	}
622	foreach axis { x y } {
623	set lim [$dataobj limits $axis]
624	if { ![info exists _limits($axis)] } {
625	set _limits($axis) $lim
626	continue
627	}
628	foreach {min max} $lim break
629	foreach {amin amax} $_limits($axis) break
630	if { $amin > $min } {
631	set amin $min
632	}
633	if { $amax < $max } {
634	set amax $max
635	}
636	set _limits($axis) [list $amin $amax]
637	}
638	foreach { fname lim } [$dataobj fieldlimits] {
639	if { ![info exists _limits($fname)] } {
640	set _limits($fname) $lim
641	continue
642	}
643	foreach {min max} $lim break
644	foreach {fmin fmax} $_limits($fname) break
645	if { $fmin > $min } {
646	set fmin $min
647	}
648	if { $fmax < $max } {
649	set fmax $max
650	}
651	set _limits($fname) [list $fmin $fmax]
652	}
653	}
654	}
655
656	# ----------------------------------------------------------------------
657	# USAGE: download coming
658	# USAGE: download controls <downloadCommand>
659	# USAGE: download now
660	#
661	# Clients use this method to create a downloadable representation
662	# of the plot. Returns a list of the form {ext string}, where
663	# "ext" is the file extension (indicating the type of data) and
664	# "string" is the data itself.
665	# ----------------------------------------------------------------------
666	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
667	switch $option {
668	coming {
669	if {[catch {
670	blt::winop snap $itk_component(plotarea) $_image(download)
671	}]} {
672	$_image(download) configure -width 1 -height 1
673	$_image(download) put #000000
674	}
675	}
676	controls {
677	set popup .vtkviewerdownload
678	if { ![winfo exists .vtkviewerdownload] } {
679	set inner [BuildDownloadPopup $popup [lindex $args 0]]
680	} else {
681	set inner [$popup component inner]
682	}
683	set _downloadPopup(image_controls) $inner.image_frame
684	set num [llength [get]]
685	set num [expr {($num == 1) ? "1 result" : "$num results"}]
686	set word [Rappture::filexfer::label downloadWord]
687	$inner.summary configure -text "$word $num in the following format:"
688	update idletasks ;# Fix initial sizes
689	return $popup
690	}
691	now {
692	set popup .vtkviewerdownload
693	if {[winfo exists .vtkviewerdownload]} {
694	$popup deactivate
695	}
696	switch -- $_downloadPopup(format) {
697	"image" {
698	return [$this GetImage [lindex $args 0]]
699	}
700	"vtk" {
701	return [$this GetVtkData [lindex $args 0]]
702	}
703	}
704	return ""
705	}
706	default {
707	error "bad option \"$option\": should be coming, controls, now"
708	}
709	}
710	}
711
712	# ----------------------------------------------------------------------
713	# USAGE: Connect ?<host:port>,<host:port>...?
714	#
715	# Clients use this method to establish a connection to a new
716	# server, or to reestablish a connection to the previous server.
717	# Any existing connection is automatically closed.
718	# ----------------------------------------------------------------------
719	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
720	global readyForNextFrame
721	set readyForNextFrame 1
722	set _reset 1
723	set _hosts [GetServerList "vtkvis"]
724	if { "" == $_hosts } {
725	return 0
726	}
727	set result [VisViewer::Connect $_hosts]
728	if { $result } {
729	if { $_reportClientInfo } {
730	# Tell the server the viewer, hub, user and session.
731	# Do this immediately on connect before buffing any commands
732	global env
733
734	set info {}
735	set user "???"
736	if { [info exists env(USER)] } {
737	set user $env(USER)
738	}
739	set session "???"
740	if { [info exists env(SESSION)] } {
741	set session $env(SESSION)
742	}
743	lappend info "hub" [exec hostname]
744	lappend info "client" "vtkheightmapviewer"
745	lappend info "user" $user
746	lappend info "session" $session
747	SendCmd "clientinfo [list $info]"
748	}
749	set w [winfo width $itk_component(view)]
750	set h [winfo height $itk_component(view)]
751	EventuallyResize $w $h
752	}
753	return $result
754	}
755
756	#
757	# isconnected --
758	#
759	# Indicates if we are currently connected to the visualization server.
760	#
761	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
762	return [VisViewer::IsConnected]
763	}
764
765	#
766	# disconnect --
767	#
768	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
769	Disconnect
770	set _reset 1
771	}
772
773	#
774	# Disconnect --
775	#
776	# Clients use this method to disconnect from the current rendering
777	# server.
778	#
779	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
780	VisViewer::Disconnect
781
782	$_dispatcher cancel !rebuild
783	$_dispatcher cancel !resize
784	$_dispatcher cancel !rotate
785	$_dispatcher cancel !legend
786	# disconnected -- no more data sitting on server
787	array unset _datasets
788	array unset _data
789	array unset _colormaps
790	array unset _obj2datasets
791	global readyForNextFrame
792	set readyForNextFrame 1
793	}
794
795	# ----------------------------------------------------------------------
796	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
797	#
798	# Invoked automatically whenever the "image" command comes in from
799	# the rendering server. Indicates that binary image data with the
800	# specified <size> will follow.
801	# ----------------------------------------------------------------------
802	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
803	global readyForNextFrame
804	set readyForNextFrame 1
805	array set info {
806	-token "???"
807	-bytes 0
808	-type image
809	}
810	array set info $args
811	set bytes [ReceiveBytes $info(-bytes)]
812	if { $info(-type) == "image" } {
813	if 0 {
814	set f [open "last.ppm" "w"]
815	puts $f $bytes
816	close $f
817	}
818	$_image(plot) configure -data $bytes
819	set time [clock seconds]
820	set date [clock format $time]
821	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
822	if { $_start > 0 } {
823	set finish [clock clicks -milliseconds]
824	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
825	set _start 0
826	}
827	} elseif { $info(type) == "print" } {
828	set tag $this-print-$info(-token)
829	set _hardcopy($tag) $bytes
830	}
831	}
832
833	#
834	# ReceiveDataset --
835	#
836	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
837	if { ![isconnected] } {
838	return
839	}
840	set option [lindex $args 0]
841	switch -- $option {
842	"scalar" {
843	set option [lindex $args 1]
844	switch -- $option {
845	"world" {
846	foreach { x y z value tag } [lrange $args 2 end] break
847	}
848	"pixel" {
849	foreach { x y value tag } [lrange $args 2 end] break
850	}
851	}
852	}
853	"vector" {
854	set option [lindex $args 1]
855	switch -- $option {
856	"world" {
857	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
858	}
859	"pixel" {
860	foreach { x y vx vy vz tag } [lrange $args 2 end] break
861	}
862	}
863	}
864	"names" {
865	foreach { name } [lindex $args 1] {
866	#puts stderr "Dataset: $name"
867	}
868	}
869	default {
870	error "unknown dataset option \"$option\" from server"
871	}
872	}
873	}
874
875	# ----------------------------------------------------------------------
876	# USAGE: Rebuild
877	#
878	# Called automatically whenever something changes that affects the
879	# data in the widget. Clears any existing data and rebuilds the
880	# widget to display new data.
881	# ----------------------------------------------------------------------
882	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
883	set w [winfo width $itk_component(view)]
884	set h [winfo height $itk_component(view)]
885	if { $w < 2 \|\| $h < 2 } {
886	$_dispatcher event -idle !rebuild
887	return
888	}
889
890	# Turn on buffering of commands to the server. We don't want to
891	# be preempted by a server disconnect/reconnect (which automatically
892	# generates a new call to Rebuild).
893	StartBufferingCommands
894
895	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
896	set _width $w
897	set _height $h
898	$_arcball resize $w $h
899	DoResize
900	if { $_settings(stretchToFit) } {
901	AdjustSetting stretchToFit
902	}
903	}
904	if { $_reset } {
905	#
906	# Reset the camera and other view parameters
907	#
908	InitSettings isHeightmap background
909
910	# Let's see how this goes. I think it's preferable to overloading the
911	# axis title with the exponent.
912	SendCmd "axis exp 0 0 0 1"
913
914	SendCmd "axis lrot z 90"
915	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
916	$_arcball quaternion $q
917	if {$_settings(isHeightmap) } {
918	if { $_view(ortho)} {
919	SendCmd "camera mode ortho"
920	} else {
921	SendCmd "camera mode persp"
922	}
923	DoRotate
924	SendCmd "camera reset"
925	}
926	PanCamera
927	StopBufferingCommands
928	SendCmd "imgflush"
929	StartBufferingCommands
930	}
931
932	set _first ""
933	# Start off with no datasets are visible.
934	SendCmd "dataset visible 0"
935	set scale [GetHeightmapScale]
936	foreach dataobj [get -objects] {
937	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
938	set _first $dataobj
939	}
940	set _obj2datasets($dataobj) ""
941	foreach comp [$dataobj components] {
942	set tag $dataobj-$comp
943	if { ![info exists _datasets($tag)] } {
944	set bytes [$dataobj vtkdata $comp]
945	if 0 {
946	set f [open /tmp/vtkheightmap.vtk "w"]
947	puts $f $bytes
948	close $f
949	}
950	set length [string length $bytes]
951	if { $_reportClientInfo } {
952	set info {}
953	lappend info "tool_id" [$dataobj hints toolId]
954	lappend info "tool_name" [$dataobj hints toolName]
955	lappend info "tool_version" [$dataobj hints toolRevision]
956	lappend info "tool_title" [$dataobj hints toolTitle]
957	lappend info "dataset_label" [$dataobj hints label]
958	lappend info "dataset_size" $length
959	lappend info "dataset_tag" $tag
960	SendCmd [list "clientinfo" $info]
961	}
962	SendCmd "dataset add $tag data follows $length"
963	append _outbuf $bytes
964	set _datasets($tag) 1
965	SetObjectStyle $dataobj $comp
966	}
967	lappend _obj2datasets($dataobj) $tag
968	if { [info exists _obj2ovride($dataobj-raise)] } {
969	# Setting dataset visible enables outline
970	# and heightmap
971	SendCmd "dataset visible 1 $tag"
972	}
973	if { ![info exists _comp2scale($tag)] \|\|
974	$_comp2scale($tag) != $scale } {
975	SendCmd "heightmap heightscale $scale $tag"
976	set _comp2scale($tag) $scale
977	}
978	}
979	}
980	if { $_first != "" } {
981	$itk_component(field) choices delete 0 end
982	$itk_component(fieldmenu) delete 0 end
983	array unset _fields
984	set _curFldName ""
985	foreach cname [$_first components] {
986	foreach fname [$_first fieldnames $cname] {
987	if { [info exists _fields($fname)] } {
988	continue
989	}
990	foreach { label units components } \
991	[$_first fieldinfo $fname] break
992	$itk_component(field) choices insert end "$fname" "$label"
993	$itk_component(fieldmenu) add radiobutton -label "$label" \
994	-value $label -variable [itcl::scope _curFldLabel] \
995	-selectcolor red \
996	-activebackground $itk_option(-plotbackground) \
997	-activeforeground $itk_option(-plotforeground) \
998	-font "Arial 8" \
999	-command [itcl::code $this Combo invoke]
1000	set _fields($fname) [list $label $units $components]
1001	if { $_curFldName == "" } {
1002	set _curFldName $fname
1003	set _curFldLabel $label
1004	}
1005	}
1006	}
1007	$itk_component(field) value $_curFldLabel
1008	}
1009	InitSettings stretchToFit outline
1010
1011	if { $_reset } {
1012	SendCmd "axis tickpos outside"
1013	foreach axis { x y z } {
1014	SendCmd "axis lformat $axis %g"
1015	}
1016
1017	foreach axis { x y z } {
1018	set label [$_first hints ${axis}label]
1019	if { $label == "" } {
1020	if {$axis == "z"} {
1021	if { [string match "component*" $_curFldName] } {
1022	set label [string toupper $axis]
1023	} else {
1024	set label $_curFldLabel
1025	}
1026	} else {
1027	set label [string toupper $axis]
1028	}
1029	}
1030	# May be a space in the axis label.
1031	SendCmd [list axis name $axis $label]
1032
1033	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1034	set units [lindex $_fields($_curFldName) 1]
1035	} else {
1036	set units [$_first hints ${axis}units]
1037	}
1038	if { $units != "" } {
1039	# May be a space in the axis units.
1040	SendCmd [list axis units $axis $units]
1041	}
1042	}
1043	#
1044	# Reset the camera and other view parameters
1045	#
1046	ResetAxes
1047	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1048	$_arcball quaternion $q
1049	if {$_settings(isHeightmap) } {
1050	if { $_view(ortho)} {
1051	SendCmd "camera mode ortho"
1052	} else {
1053	SendCmd "camera mode persp"
1054	}
1055	DoRotate
1056	SendCmd "camera reset"
1057	}
1058	PanCamera
1059	InitSettings axisXGrid axisYGrid axisZGrid \
1060	axisVisible axisLabels heightmapScale field isHeightmap \
1061	numIsolines
1062	if { [array size _fields] < 2 } {
1063	blt::table forget $itk_component(field) $itk_component(field_l)
1064	}
1065	RequestLegend
1066	set _reset 0
1067	}
1068	global readyForNextFrame
1069	set readyForNextFrame 0; # Don't advance to the next frame
1070
1071	# Actually write the commands to the server socket. If it fails, we don't
1072	# care. We're finished here.
1073	blt::busy hold $itk_component(hull)
1074	StopBufferingCommands
1075	blt::busy release $itk_component(hull)
1076	}
1077
1078	# ----------------------------------------------------------------------
1079	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1080	#
1081	# Returns a list of server IDs for the current datasets being displayed. This
1082	# is normally a single ID, but it might be a list of IDs if the current data
1083	# object has multiple components.
1084	# ----------------------------------------------------------------------
1085	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1086	set flag [lindex $args 0]
1087	switch -- $flag {
1088	"-all" {
1089	if { [llength $args] > 1 } {
1090	error "CurrentDatasets: can't specify dataobj after \"-all\""
1091	}
1092	set dlist [get -objects]
1093	}
1094	"-visible" {
1095	if { [llength $args] > 1 } {
1096	set dlist {}
1097	set args [lrange $args 1 end]
1098	foreach dataobj $args {
1099	if { [info exists _obj2ovride($dataobj-raise)] } {
1100	lappend dlist $dataobj
1101	}
1102	}
1103	} else {
1104	set dlist [get -visible]
1105	}
1106	}
1107	default {
1108	set dlist $args
1109	}
1110	}
1111	set rlist ""
1112	foreach dataobj $dlist {
1113	foreach comp [$dataobj components] {
1114	set tag $dataobj-$comp
1115	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1116	lappend rlist $tag
1117	}
1118	}
1119	}
1120	return $rlist
1121	}
1122
1123	# ----------------------------------------------------------------------
1124	# USAGE: Zoom in
1125	# USAGE: Zoom out
1126	# USAGE: Zoom reset
1127	#
1128	# Called automatically when the user clicks on one of the zoom
1129	# controls for this widget. Changes the zoom for the current view.
1130	# ----------------------------------------------------------------------
1131	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1132	switch -- $option {
1133	"in" {
1134	set _view(zoom) [expr {$_view(zoom)*1.25}]
1135	SendCmd "camera zoom $_view(zoom)"
1136	}
1137	"out" {
1138	set _view(zoom) [expr {$_view(zoom)*0.8}]
1139	SendCmd "camera zoom $_view(zoom)"
1140	}
1141	"reset" {
1142	array set _view {
1143	qw 0.36
1144	qx 0.25
1145	qy 0.50
1146	qz 0.70
1147	zoom 1.0
1148	xpan 0
1149	ypan 0
1150	}
1151	if { $_first != "" } {
1152	set location [$_first hints camera]
1153	if { $location != "" } {
1154	array set _view $location
1155	}
1156	}
1157	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1158	$_arcball quaternion $q
1159	if {$_settings(isHeightmap) } {
1160	DoRotate
1161	}
1162	SendCmd "camera reset"
1163	}
1164	}
1165	}
1166
1167	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1168	set x $_view(xpan)
1169	set y $_view(ypan)
1170	SendCmd "camera pan $x $y"
1171	}
1172
1173
1174	# ----------------------------------------------------------------------
1175	# USAGE: Rotate click <x> <y>
1176	# USAGE: Rotate drag <x> <y>
1177	# USAGE: Rotate release <x> <y>
1178	#
1179	# Called automatically when the user clicks/drags/releases in the
1180	# plot area. Moves the plot according to the user's actions.
1181	# ----------------------------------------------------------------------
1182	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1183	switch -- $option {
1184	"click" {
1185	$itk_component(view) configure -cursor fleur
1186	set _click(x) $x
1187	set _click(y) $y
1188	}
1189	"drag" {
1190	if {[array size _click] == 0} {
1191	Rotate click $x $y
1192	} else {
1193	set w [winfo width $itk_component(view)]
1194	set h [winfo height $itk_component(view)]
1195	if {$w <= 0 \|\| $h <= 0} {
1196	return
1197	}
1198
1199	if {[catch {
1200	# this fails sometimes for no apparent reason
1201	set dx [expr {double($x-$_click(x))/$w}]
1202	set dy [expr {double($y-$_click(y))/$h}]
1203	}]} {
1204	return
1205	}
1206	if { $dx == 0 && $dy == 0 } {
1207	return
1208	}
1209	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1210	EventuallyRotate $q
1211	set _click(x) $x
1212	set _click(y) $y
1213	}
1214	}
1215	"release" {
1216	Rotate drag $x $y
1217	$itk_component(view) configure -cursor ""
1218	catch {unset _click}
1219	}
1220	default {
1221	error "bad option \"$option\": should be click, drag, release"
1222	}
1223	}
1224	}
1225
1226	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1227	foreach tag [CurrentDatasets -visible] {
1228	SendCmd "dataset getscalar pixel $x $y $tag"
1229	}
1230	}
1231
1232	# ----------------------------------------------------------------------
1233	# USAGE: $this Pan click x y
1234	# $this Pan drag x y
1235	# $this Pan release x y
1236	#
1237	# Called automatically when the user clicks on one of the zoom
1238	# controls for this widget. Changes the zoom for the current view.
1239	# ----------------------------------------------------------------------
1240	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1241	switch -- $option {
1242	"set" {
1243	set w [winfo width $itk_component(view)]
1244	set h [winfo height $itk_component(view)]
1245	set x [expr $x / double($w)]
1246	set y [expr $y / double($h)]
1247	set _view(xpan) [expr $_view(xpan) + $x]
1248	set _view(ypan) [expr $_view(ypan) + $y]
1249	PanCamera
1250	return
1251	}
1252	"click" {
1253	set _click(x) $x
1254	set _click(y) $y
1255	$itk_component(view) configure -cursor hand1
1256	}
1257	"drag" {
1258	if { ![info exists _click(x)] } {
1259	set _click(x) $x
1260	}
1261	if { ![info exists _click(y)] } {
1262	set _click(y) $y
1263	}
1264	set w [winfo width $itk_component(view)]
1265	set h [winfo height $itk_component(view)]
1266	set dx [expr ($_click(x) - $x)/double($w)]
1267	set dy [expr ($_click(y) - $y)/double($h)]
1268	set _click(x) $x
1269	set _click(y) $y
1270	set _view(xpan) [expr $_view(xpan) - $dx]
1271	set _view(ypan) [expr $_view(ypan) - $dy]
1272	PanCamera
1273	}
1274	"release" {
1275	Pan drag $x $y
1276	$itk_component(view) configure -cursor ""
1277	}
1278	default {
1279	error "unknown option \"$option\": should set, click, drag, or release"
1280	}
1281	}
1282	}
1283
1284	# ----------------------------------------------------------------------
1285	# USAGE: InitSettings <what> ?<value>?
1286	#
1287	# Used internally to update rendering settings whenever parameters
1288	# change in the popup settings panel. Sends the new settings off
1289	# to the back end.
1290	# ----------------------------------------------------------------------
1291	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1292	foreach spec $args {
1293	if { [info exists _settings($_first-$spec)] } {
1294	# Reset global setting with dataobj specific setting
1295	set _settings($spec) $_settings($_first-$spec)
1296	}
1297	AdjustSetting $spec
1298	}
1299	}
1300
1301	#
1302	# AdjustSetting --
1303	#
1304	# Changes/updates a specific setting in the widget. There are
1305	# usually user-setable option. Commands are sent to the render
1306	# server.
1307	#
1308	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1309	if { $_beforeConnect } {
1310	return
1311	}
1312	switch -- $what {
1313	"axisFlymode" {
1314	set mode [$itk_component(axisflymode) value]
1315	set mode [$itk_component(axisflymode) translate $mode]
1316	set _settings($what) $mode
1317	SendCmd "axis flymode $mode"
1318	}
1319	"axisLabels" {
1320	set bool $_settings(axisLabels)
1321	SendCmd "axis labels all $bool"
1322	}
1323	"axisMinorTicks" {
1324	set bool $_settings(axisMinorTicks)
1325	foreach axis { x y z } {
1326	SendCmd "axis minticks ${axis} $bool"
1327	}
1328	}
1329	"axisVisible" {
1330	set bool $_settings(axisVisible)
1331	SendCmd "axis visible all $bool"
1332	}
1333	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1334	set axis [string tolower [string range $what 4 4]]
1335	set bool $_settings($what)
1336	SendCmd "axis grid $axis $bool"
1337	}
1338	"background" {
1339	set bg [$itk_component(background) value]
1340	array set fgcolors {
1341	"black" "white"
1342	"white" "black"
1343	"grey" "black"
1344	}
1345	set fg $fgcolors($bg)
1346	configure -plotbackground $bg -plotforeground $fg
1347	$itk_component(view) delete "legend"
1348	SendCmd "screen bgcolor [Color2RGB $bg]"
1349	SendCmd "outline color [Color2RGB $fg]"
1350	SendCmd "axis color all [Color2RGB $fg]"
1351	DrawLegend
1352	}
1353	"colormap" {
1354	set _changed(colormap) 1
1355	StartBufferingCommands
1356	set color [$itk_component(colormap) value]
1357	set _settings(colormap) $color
1358	if { $color == "none" } {
1359	if { $_settings(colormapVisible) } {
1360	SendCmd "heightmap surface 0"
1361	set _settings(colormapVisible) 0
1362	}
1363	} else {
1364	if { !$_settings(colormapVisible) } {
1365	SendCmd "heightmap surface 1"
1366	set _settings(colormapVisible) 1
1367	}
1368	SetCurrentColormap $color
1369	if {$_settings(colormapDiscrete)} {
1370	set numColors [expr $_settings(numIsolines) + 1]
1371	SendCmd "colormap res $numColors $color"
1372	}
1373	}
1374	StopBufferingCommands
1375	EventuallyRequestLegend
1376	}
1377	"colormapVisible" {
1378	set bool $_settings($what)
1379	SendCmd "heightmap surface $bool"
1380	}
1381	"colormapDiscrete" {
1382	set bool $_settings($what)
1383	set numColors [expr $_settings(numIsolines) + 1]
1384	StartBufferingCommands
1385	if {$bool} {
1386	SendCmd "colormap res $numColors"
1387	# Discrete colormap requires preinterp on
1388	SendCmd "heightmap preinterp on"
1389	} else {
1390	SendCmd "colormap res default"
1391	# FIXME: add setting for preinterp (default on)
1392	SendCmd "heightmap preinterp on"
1393	}
1394	StopBufferingCommands
1395	EventuallyRequestLegend
1396	}
1397	"edges" {
1398	set bool $_settings(edges)
1399	SendCmd "heightmap edges $bool"
1400	}
1401	"field" {
1402	set label [$itk_component(field) value]
1403	set fname [$itk_component(field) translate $label]
1404	set _settings(field) $fname
1405	if { [info exists _fields($fname)] } {
1406	foreach { label units components } $_fields($fname) break
1407	if { $components > 1 } {
1408	set _colorMode vmag
1409	} else {
1410	set _colorMode scalar
1411	}
1412	set _curFldName $fname
1413	set _curFldLabel $label
1414	} else {
1415	puts stderr "unknown field \"$fname\""
1416	return
1417	}
1418	set label [$_first hints zlabel]
1419	if { $label == "" } {
1420	if { [string match "component*" $_curFldName] } {
1421	set label Z
1422	} else {
1423	set label $_curFldLabel
1424	}
1425	}
1426	# May be a space in the axis label.
1427	SendCmd [list axis name z $label]
1428
1429	if { [$_first hints zunits] == "" } {
1430	set units [lindex $_fields($_curFldName) 1]
1431	} else {
1432	set units [$_first hints zunits]
1433	}
1434	if { $units != "" } {
1435	# May be a space in the axis units.
1436	SendCmd [list axis units z $units]
1437	}
1438	# Get the new limits because the field changed.
1439	ResetAxes
1440	SendCmd "dataset scalar $_curFldName"
1441	SendCmd "heightmap colormode scalar $_curFldName"
1442	SendCmd "camera reset"
1443	UpdateContourList
1444	DrawLegend
1445	}
1446	"heightmapScale" {
1447	if { $_settings(isHeightmap) } {
1448	set scale [GetHeightmapScale]
1449	# Have to set the datasets individually because we are
1450	# tracking them in _comp2scale.
1451	foreach dataset [CurrentDatasets -all] {
1452	SendCmd "heightmap heightscale $scale $dataset"
1453	set _comp2scale($dataset) $scale
1454	}
1455	ResetAxes
1456	}
1457	}
1458	"isHeightmap" {
1459	set bool $_settings(isHeightmap)
1460	set c $itk_component(view)
1461	StartBufferingCommands
1462	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1463	if { $bool } {
1464	set _settings(heightmapScale) 50
1465	set _settings(opacity) $_settings(saveOpacity)
1466	set _settings(lighting) $_settings(saveLighting)
1467	set _settings(outline) 0
1468	} else {
1469	set _settings(heightmapScale) 0
1470	set _settings(lighting) 0
1471	set _settings(opacity) 100
1472	set _settings(outline) $_settings(saveOutline)
1473	}
1474	AdjustSetting lighting
1475	AdjustSetting opacity
1476	AdjustSetting outline
1477	set scale [GetHeightmapScale]
1478	# Have to set the datasets individually because we are
1479	# tracking them in _comp2scale.
1480	foreach dataset [CurrentDatasets -all] {
1481	SendCmd "heightmap heightscale $scale $dataset"
1482	set _comp2scale($dataset) $scale
1483	}
1484	if { $bool } {
1485	$itk_component(lighting) configure -state normal
1486	$itk_component(opacity) configure -state normal
1487	$itk_component(scale) configure -state normal
1488	$itk_component(opacity_l) configure -state normal
1489	$itk_component(scale_l) configure -state normal
1490	$itk_component(outline) configure -state disabled
1491	if {$_view(ortho)} {
1492	SendCmd "camera mode ortho"
1493	} else {
1494	SendCmd "camera mode persp"
1495	}
1496	} else {
1497	$itk_component(lighting) configure -state disabled
1498	$itk_component(opacity) configure -state disabled
1499	$itk_component(scale) configure -state disabled
1500	$itk_component(opacity_l) configure -state disabled
1501	$itk_component(scale_l) configure -state disabled
1502	$itk_component(outline) configure -state normal
1503	SendCmd "camera mode image"
1504	}
1505	if {$_settings(stretchToFit)} {
1506	if {$scale == 0} {
1507	SendCmd "camera aspect window"
1508	} else {
1509	SendCmd "camera aspect square"
1510	}
1511	}
1512	ResetAxes
1513	if { $bool } {
1514	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1515	$_arcball quaternion $q
1516	SendCmd "camera orient $q"
1517	} else {
1518	bind $c <ButtonPress-1> {}
1519	bind $c <B1-Motion> {}
1520	bind $c <ButtonRelease-1> {}
1521	}
1522	SendCmd "camera reset"
1523	# Fix the mouse bindings for rotation/panning and the
1524	# camera mode. Ideally we'd create a bindtag for these.
1525	if { $bool } {
1526	# Bindings for rotation via mouse
1527	bind $c <ButtonPress-1> \
1528	[itcl::code $this Rotate click %x %y]
1529	bind $c <B1-Motion> \
1530	[itcl::code $this Rotate drag %x %y]
1531	bind $c <ButtonRelease-1> \
1532	[itcl::code $this Rotate release %x %y]
1533	}
1534	StopBufferingCommands
1535	}
1536	"isolineColor" {
1537	set color [$itk_component(isolinecolor) value]
1538	if { $color == "none" } {
1539	if { $_settings(isolinesVisible) } {
1540	SendCmd "heightmap isolines 0"
1541	set _settings(isolinesVisible) 0
1542	}
1543	} else {
1544	if { !$_settings(isolinesVisible) } {
1545	SendCmd "heightmap isolines 1"
1546	set _settings(isolinesVisible) 1
1547	}
1548	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1549	}
1550	DrawLegend
1551	}
1552	"isolinesVisible" {
1553	set bool $_settings($what)
1554	SendCmd "heightmap isolines $bool"
1555	DrawLegend
1556	}
1557	"legendVisible" {
1558	if { !$_settings($what) } {
1559	$itk_component(view) delete legend
1560	}
1561	DrawLegend
1562	}
1563	"lighting" {
1564	if { $_settings(isHeightmap) } {
1565	set _settings(saveLighting) $_settings(lighting)
1566	set bool $_settings($what)
1567	SendCmd "heightmap lighting $bool"
1568	} else {
1569	SendCmd "heightmap lighting 0"
1570	}
1571	}
1572	"numIsolines" {
1573	set _settings(numIsolines) [$itk_component(numisolines) value]
1574	set _currentNumIsolines $_settings(numIsolines)
1575	UpdateContourList
1576	set _changed(numIsolines) 1
1577	SendCmd "heightmap contourlist [list $_contourList]"
1578	if {$_settings(colormapDiscrete)} {
1579	set numColors [expr $_settings(numIsolines) + 1]
1580	SendCmd "colormap res $numColors"
1581	EventuallyRequestLegend
1582	} else {
1583	DrawLegend
1584	}
1585	}
1586	"opacity" {
1587	set _changed(opacity) 1
1588	if { $_settings(isHeightmap) } {
1589	set _settings(saveOpacity) $_settings(opacity)
1590	set val $_settings(opacity)
1591	set sval [expr { 0.01 * double($val) }]
1592	SendCmd "heightmap opacity $sval"
1593	} else {
1594	SendCmd "heightmap opacity 1"
1595	}
1596	}
1597	"outline" {
1598	if { $_settings(isHeightmap) } {
1599	SendCmd "outline visible 0"
1600	} else {
1601	set _settings(saveOutline) $_settings(outline)
1602	set bool $_settings(outline)
1603	SendCmd "outline visible $bool"
1604	}
1605	}
1606	"stretchToFit" {
1607	set bool $_settings($what)
1608	if { $bool } {
1609	set heightScale [GetHeightmapScale]
1610	if {$heightScale == 0} {
1611	SendCmd "camera aspect window"
1612	} else {
1613	SendCmd "camera aspect square"
1614	}
1615	} else {
1616	SendCmd "camera aspect native"
1617	}
1618	}
1619	"wireframe" {
1620	set bool $_settings($what)
1621	SendCmd "heightmap wireframe $bool"
1622	}
1623	default {
1624	error "don't know how to fix $what"
1625	}
1626	}
1627	}
1628
1629	#
1630	# RequestLegend --
1631	#
1632	# Request a new legend from the server. The size of the legend
1633	# is determined from the height of the canvas.
1634	#
1635	# This should be called when
1636	# 1. A new current colormap is set.
1637	# 2. Window is resized.
1638	# 3. The limits of the data have changed. (Just need a redraw).
1639	# 4. Number of isolines have changed. (Just need a redraw).
1640	# 5. Legend becomes visible (Just need a redraw).
1641	#
1642	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1643	set _legendPending 0
1644	set font "Arial 8"
1645	set w 12
1646	set lineht [font metrics $font -linespace]
1647	# color ramp height = (canvas height) - (min and max value lines) - 2
1648	set h [expr {$_height - 2 * ($lineht + 2)}]
1649	set _legendHeight $h
1650
1651	set fname $_curFldName
1652	if { [string match "component*" $fname] } {
1653	set title ""
1654	} else {
1655	if { [info exists _fields($fname)] } {
1656	foreach { title units } $_fields($fname) break
1657	if { $units != "" } {
1658	set title [format "%s (%s)" $title $units]
1659	}
1660	} else {
1661	set title $fname
1662	}
1663	}
1664	# If there's a title too, substract one more line
1665	if { $title != "" } {
1666	incr h -$lineht
1667	}
1668	if { $h < 1} {
1669	return
1670	}
1671	# Set the legend on the first heightmap dataset.
1672	if { $_currentColormap != "" } {
1673	set cmap $_currentColormap
1674	SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1675	#SendCmd "heightmap colormode scalar $_curFldName"
1676	#SendCmd "dataset scalar $_curFldName"
1677	}
1678	}
1679
1680	#
1681	# ResetAxes --
1682	#
1683	# Set axis z bounds and range
1684	#
1685	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1686	if { ![info exists _limits($_curFldName)]} {
1687	SendCmd "dataset maprange all"
1688	SendCmd "axis autorange z on"
1689	SendCmd "axis autobounds z on"
1690	return
1691	}
1692	foreach { xmin xmax } $_limits(x) break
1693	foreach { ymin ymax } $_limits(y) break
1694	foreach { vmin vmax } $_limits($_curFldName) break
1695
1696	global tcl_precision
1697	set tcl_precision 17
1698	set xr [expr $xmax - $xmin]
1699	set yr [expr $ymax - $ymin]
1700	set vr [expr $vmax - $vmin]
1701	set r [expr ($yr > $xr) ? $yr : $xr]
1702	if { $vr < 1.0e-17 } {
1703	set dataScale 1.0
1704	} else {
1705	set dataScale [expr $r / $vr]
1706	}
1707	set heightScale [GetHeightmapScale]
1708	set bmin [expr $heightScale * $dataScale * $vmin]
1709	set bmax [expr $heightScale * $dataScale * $vmax]
1710	if {$heightScale > 0} {
1711	set zpos [expr - $bmin]
1712	SendCmd "heightmap pos 0 0 $zpos"
1713	} else {
1714	SendCmd "heightmap pos 0 0 0"
1715	}
1716	set bmax [expr $bmax - $bmin]
1717	set bmin 0
1718	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1719	SendCmd "axis bounds z $bmin $bmax"
1720	SendCmd "axis range z $_limits($_curFldName)"
1721	}
1722
1723	#
1724	# SetCurrentColormap --
1725	#
1726	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1727	# Keep track of the colormaps that we build.
1728	if { ![info exists _colormaps($name)] } {
1729	BuildColormap $name
1730	set _colormaps($name) 1
1731	}
1732	set _currentColormap $name
1733	SendCmd "heightmap colormap $_currentColormap"
1734	}
1735
1736
1737	#
1738	# BuildColormap --
1739	#
1740	# Build the designated colormap on the server.
1741	#
1742	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1743	set cmap [ColorsToColormap $name]
1744	if { [llength $cmap] == 0 } {
1745	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1746	}
1747	set wmap "0.0 1.0 1.0 1.0"
1748	SendCmd "colormap add $name { $cmap } { $wmap }"
1749	}
1750
1751	# ----------------------------------------------------------------------
1752	# CONFIGURATION OPTION: -mode
1753	# ----------------------------------------------------------------------
1754	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1755	switch -- $itk_option(-mode) {
1756	"heightmap" {
1757	set _settings(isHeightmap) 1
1758	}
1759	"contour" {
1760	set _settings(isHeightmap) 0
1761	}
1762	default {
1763	error "unknown mode settings \"$itk_option(-mode)\""
1764	}
1765	}
1766	if { !$_reset } {
1767	AdjustSetting isHeightmap
1768	}
1769	}
1770
1771	# ----------------------------------------------------------------------
1772	# CONFIGURATION OPTION: -plotbackground
1773	# ----------------------------------------------------------------------
1774	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1775	if { [isconnected] } {
1776	set rgb [Color2RGB $itk_option(-plotbackground)]
1777	if { !$_reset } {
1778	SendCmd "screen bgcolor $rgb"
1779	}
1780	$itk_component(view) configure -background $itk_option(-plotbackground)
1781	}
1782	}
1783
1784	# ----------------------------------------------------------------------
1785	# CONFIGURATION OPTION: -plotforeground
1786	# ----------------------------------------------------------------------
1787	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1788	if { [isconnected] } {
1789	set rgb [Color2RGB $itk_option(-plotforeground)]
1790	if { !$_reset } {
1791	SendCmd "outline color $rgb"
1792	SendCmd "axis color all $rgb"
1793	}
1794	}
1795	}
1796
1797	itcl::body Rappture::VtkHeightmapViewer::limits3 { dataobj } {
1798	lappend limits x [$dataobj limits x]
1799	lappend limits y [$dataobj limits y]
1800	if { [catch { $dataobj limits $_curFldName } vlim] != 0 } {
1801	set vlim [$dataobj limits v]
1802	}
1803	lappend limits v $vlim
1804	return $limits
1805	}
1806
1807	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1808
1809	set fg [option get $itk_component(hull) font Font]
1810	#set bfg [option get $itk_component(hull) boldFont Font]
1811
1812	set inner [$itk_component(main) insert end \
1813	-title "Contour/Surface Settings" \
1814	-icon [Rappture::icon contour2]]
1815	$inner configure -borderwidth 4
1816
1817	checkbutton $inner.legend \
1818	-text "Legend" \
1819	-variable [itcl::scope _settings(legendVisible)] \
1820	-command [itcl::code $this AdjustSetting legendVisible] \
1821	-font "Arial 9"
1822
1823	checkbutton $inner.wireframe \
1824	-text "Wireframe" \
1825	-variable [itcl::scope _settings(wireframe)] \
1826	-command [itcl::code $this AdjustSetting wireframe] \
1827	-font "Arial 9"
1828
1829	itk_component add lighting {
1830	checkbutton $inner.lighting \
1831	-text "Enable Lighting" \
1832	-variable [itcl::scope _settings(lighting)] \
1833	-command [itcl::code $this AdjustSetting lighting] \
1834	-font "Arial 9"
1835	} {
1836	ignore -font
1837	}
1838	checkbutton $inner.edges \
1839	-text "Edges" \
1840	-variable [itcl::scope _settings(edges)] \
1841	-command [itcl::code $this AdjustSetting edges] \
1842	-font "Arial 9"
1843
1844	itk_component add outline {
1845	checkbutton $inner.outline \
1846	-text "Outline" \
1847	-variable [itcl::scope _settings(outline)] \
1848	-command [itcl::code $this AdjustSetting outline] \
1849	-font "Arial 9"
1850	} {
1851	ignore -font
1852	}
1853	checkbutton $inner.stretch \
1854	-text "Stretch to fit" \
1855	-variable [itcl::scope _settings(stretchToFit)] \
1856	-command [itcl::code $this AdjustSetting stretchToFit] \
1857	-font "Arial 9"
1858
1859	checkbutton $inner.isolines \
1860	-text "Isolines" \
1861	-variable [itcl::scope _settings(isolinesVisible)] \
1862	-command [itcl::code $this AdjustSetting isolinesVisible] \
1863	-font "Arial 9"
1864
1865	checkbutton $inner.colormapDiscrete \
1866	-text "Discrete Colormap" \
1867	-variable [itcl::scope _settings(colormapDiscrete)] \
1868	-command [itcl::code $this AdjustSetting colormapDiscrete] \
1869	-font "Arial 9"
1870
1871	itk_component add field_l {
1872	label $inner.field_l -text "Field" -font "Arial 9"
1873	} {
1874	ignore -font
1875	}
1876	itk_component add field {
1877	Rappture::Combobox $inner.field -width 10 -editable no
1878	}
1879	bind $inner.field <<Value>> \
1880	[itcl::code $this AdjustSetting field]
1881
1882	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1883	itk_component add colormap {
1884	Rappture::Combobox $inner.colormap -width 10 -editable no
1885	}
1886	$inner.colormap choices insert end \
1887	"BCGYR" "BCGYR" \
1888	"BGYOR" "BGYOR" \
1889	"blue" "blue" \
1890	"blue-to-brown" "blue-to-brown" \
1891	"blue-to-orange" "blue-to-orange" \
1892	"blue-to-grey" "blue-to-grey" \
1893	"green-to-magenta" "green-to-magenta" \
1894	"greyscale" "greyscale" \
1895	"nanohub" "nanohub" \
1896	"rainbow" "rainbow" \
1897	"spectral" "spectral" \
1898	"ROYGB" "ROYGB" \
1899	"RYGCB" "RYGCB" \
1900	"brown-to-blue" "brown-to-blue" \
1901	"grey-to-blue" "grey-to-blue" \
1902	"orange-to-blue" "orange-to-blue" \
1903	"none" "none"
1904
1905	$itk_component(colormap) value "BCGYR"
1906	bind $inner.colormap <<Value>> \
1907	[itcl::code $this AdjustSetting colormap]
1908
1909	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1910	itk_component add isolinecolor {
1911	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1912	}
1913	$inner.isolinecolor choices insert end \
1914	"black" "black" \
1915	"blue" "blue" \
1916	"cyan" "cyan" \
1917	"green" "green" \
1918	"grey" "grey" \
1919	"magenta" "magenta" \
1920	"orange" "orange" \
1921	"red" "red" \
1922	"white" "white" \
1923	"none" "none"
1924
1925	$itk_component(isolinecolor) value "black"
1926	bind $inner.isolinecolor <<Value>> \
1927	[itcl::code $this AdjustSetting isolineColor]
1928
1929	label $inner.background_l -text "Background Color" -font "Arial 9"
1930	itk_component add background {
1931	Rappture::Combobox $inner.background -width 10 -editable no
1932	}
1933	$inner.background choices insert end \
1934	"black" "black" \
1935	"white" "white" \
1936	"grey" "grey"
1937
1938	$itk_component(background) value "white"
1939	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1940
1941	itk_component add opacity_l {
1942	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1943	} {
1944	ignore -font
1945	}
1946	itk_component add opacity {
1947	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1948	-variable [itcl::scope _settings(opacity)] \
1949	-showvalue off \
1950	-command [itcl::code $this AdjustSetting opacity]
1951	}
1952	itk_component add scale_l {
1953	label $inner.scale_l -text "Scale" -font "Arial 9"
1954	} {
1955	ignore -font
1956	}
1957	itk_component add scale {
1958	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1959	-variable [itcl::scope _settings(heightmapScale)] \
1960	-showvalue off \
1961	-command [itcl::code $this AdjustSetting heightmapScale]
1962	}
1963	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1964	itk_component add numisolines {
1965	Rappture::Spinint $inner.numisolines \
1966	-min 1 -max 50 -font "arial 9"
1967	}
1968	$itk_component(numisolines) value $_settings(numIsolines)
1969	bind $itk_component(numisolines) <<Value>> \
1970	[itcl::code $this AdjustSetting numIsolines]
1971
1972	frame $inner.separator1 -height 2 -relief sunken -bd 1
1973	frame $inner.separator2 -height 2 -relief sunken -bd 1
1974
1975	blt::table $inner \
1976	0,0 $inner.field_l -anchor w -pady 2 \
1977	0,1 $inner.field -anchor w -pady 2 -fill x \
1978	1,0 $inner.colormap_l -anchor w -pady 2 \
1979	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1980	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
1981	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
1982	3,0 $inner.background_l -anchor w -pady 2 \
1983	3,1 $inner.background -anchor w -pady 2 -fill x \
1984	4,0 $inner.numisolines_l -anchor w -pady 2 \
1985	4,1 $inner.numisolines -anchor w -pady 2 \
1986	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
1987	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1988	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1989	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
1990	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
1991	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
1992	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
1993	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1994	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
1995	14,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1996	15,0 $inner.opacity_l -anchor w -pady 2 \
1997	15,1 $inner.opacity -fill x -pady 2 \
1998	16,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
1999	16,1 $inner.scale -fill x -pady 2 -cspan 2 \
2000
2001	blt::table configure $inner r* c* -resize none
2002	blt::table configure $inner r17 c1 -resize expand
2003	}
2004
2005	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
2006
2007	set fg [option get $itk_component(hull) font Font]
2008	#set bfg [option get $itk_component(hull) boldFont Font]
2009
2010	set inner [$itk_component(main) insert end \
2011	-title "Axis Settings" \
2012	-icon [Rappture::icon axis2]]
2013	$inner configure -borderwidth 4
2014
2015	checkbutton $inner.visible \
2016	-text "Axes" \
2017	-variable [itcl::scope _settings(axisVisible)] \
2018	-command [itcl::code $this AdjustSetting axisVisible] \
2019	-font "Arial 9"
2020	checkbutton $inner.labels \
2021	-text "Axis Labels" \
2022	-variable [itcl::scope _settings(axisLabels)] \
2023	-command [itcl::code $this AdjustSetting axisLabels] \
2024	-font "Arial 9"
2025	label $inner.grid_l -text "Grid" -font "Arial 9"
2026	checkbutton $inner.xgrid \
2027	-text "X" \
2028	-variable [itcl::scope _settings(axisXGrid)] \
2029	-command [itcl::code $this AdjustSetting axisXGrid] \
2030	-font "Arial 9"
2031	checkbutton $inner.ygrid \
2032	-text "Y" \
2033	-variable [itcl::scope _settings(axisYGrid)] \
2034	-command [itcl::code $this AdjustSetting axisYGrid] \
2035	-font "Arial 9"
2036	checkbutton $inner.zgrid \
2037	-text "Z" \
2038	-variable [itcl::scope _settings(axisZGrid)] \
2039	-command [itcl::code $this AdjustSetting axisZGrid] \
2040	-font "Arial 9"
2041	checkbutton $inner.minorticks \
2042	-text "Minor Ticks" \
2043	-variable [itcl::scope _settings(axisMinorTicks)] \
2044	-command [itcl::code $this AdjustSetting axisMinorTicks] \
2045	-font "Arial 9"
2046
2047
2048	label $inner.mode_l -text "Mode" -font "Arial 9"
2049
2050	itk_component add axisflymode {
2051	Rappture::Combobox $inner.mode -width 10 -editable no
2052	}
2053	$inner.mode choices insert end \
2054	"static_triad" "static" \
2055	"closest_triad" "closest" \
2056	"furthest_triad" "furthest" \
2057	"outer_edges" "outer"
2058	$itk_component(axisflymode) value "static"
2059	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlymode]
2060
2061	blt::table $inner \
2062	0,0 $inner.visible -anchor w -cspan 4 \
2063	1,0 $inner.labels -anchor w -cspan 4 \
2064	2,0 $inner.minorticks -anchor w -cspan 4 \
2065	4,0 $inner.grid_l -anchor w \
2066	4,1 $inner.xgrid -anchor w \
2067	4,2 $inner.ygrid -anchor w \
2068	4,3 $inner.zgrid -anchor w \
2069	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2070	5,1 $inner.mode -fill x -cspan 3
2071
2072	blt::table configure $inner r* c* -resize none
2073	blt::table configure $inner r7 c6 -resize expand
2074	blt::table configure $inner r3 -height 0.125i
2075	}
2076
2077
2078	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2079	set inner [$itk_component(main) insert end \
2080	-title "Camera Settings" \
2081	-icon [Rappture::icon camera]]
2082	$inner configure -borderwidth 4
2083
2084	label $inner.view_l -text "view" -font "Arial 9"
2085	set f [frame $inner.view]
2086	foreach side { front back left right top bottom } {
2087	button $f.$side -image [Rappture::icon view$side] \
2088	-command [itcl::code $this SetOrientation $side]
2089	Rappture::Tooltip::for $f.$side "Change the view to $side"
2090	pack $f.$side -side left
2091	}
2092
2093	blt::table $inner \
2094	0,0 $inner.view_l -anchor e -pady 2 \
2095	0,1 $inner.view -anchor w -pady 2
2096
2097	set labels { qx qy qz qw xpan ypan zoom }
2098	set row 1
2099	foreach tag $labels {
2100	label $inner.${tag}label -text $tag -font "Arial 9"
2101	entry $inner.${tag} -font "Arial 9" -bg white \
2102	-textvariable [itcl::scope _view($tag)]
2103	bind $inner.${tag} <Return> \
2104	[itcl::code $this camera set ${tag}]
2105	bind $inner.${tag} <KP_Enter> \
2106	[itcl::code $this camera set ${tag}]
2107	blt::table $inner \
2108	$row,0 $inner.${tag}label -anchor e -pady 2 \
2109	$row,1 $inner.${tag} -anchor w -pady 2
2110	blt::table configure $inner r$row -resize none
2111	incr row
2112	}
2113	checkbutton $inner.ortho \
2114	-text "Orthographic Projection" \
2115	-variable [itcl::scope _view(ortho)] \
2116	-command [itcl::code $this camera set ortho] \
2117	-font "Arial 9"
2118	blt::table $inner \
2119	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2120	blt::table configure $inner r$row -resize none
2121	incr row
2122
2123	blt::table configure $inner c* r* -resize none
2124	blt::table configure $inner c2 -resize expand
2125	blt::table configure $inner r$row -resize expand
2126	}
2127
2128	#
2129	# camera --
2130	#
2131	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2132	switch -- $option {
2133	"show" {
2134	puts [array get _view]
2135	}
2136	"set" {
2137	set who [lindex $args 0]
2138	set x $_view($who)
2139	set code [catch { string is double $x } result]
2140	if { $code != 0 \|\| !$result } {
2141	return
2142	}
2143	switch -- $who {
2144	"ortho" {
2145	if {$_view(ortho)} {
2146	SendCmd "camera mode ortho"
2147	} else {
2148	SendCmd "camera mode persp"
2149	}
2150	}
2151	"xpan" - "ypan" {
2152	PanCamera
2153	}
2154	"qx" - "qy" - "qz" - "qw" {
2155	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2156	$_arcball quaternion $q
2157	EventuallyRotate $q
2158	}
2159	"zoom" {
2160	SendCmd "camera zoom $_view(zoom)"
2161	}
2162	}
2163	}
2164	}
2165	}
2166
2167	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2168	set bytes ""
2169	foreach dataobj [get] {
2170	foreach comp [$dataobj components] {
2171	set tag $dataobj-$comp
2172	#set contents [ConvertToVtkData $dataobj $comp]
2173	set contents [$dataobj vtkdata $comp]
2174	append bytes "$contents\n\n"
2175	}
2176	}
2177	return [list .vtk $bytes]
2178	}
2179
2180	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2181	if { [image width $_image(download)] > 0 &&
2182	[image height $_image(download)] > 0 } {
2183	set bytes [$_image(download) data -format "jpeg -quality 100"]
2184	set bytes [Rappture::encoding::decode -as b64 $bytes]
2185	return [list .jpg $bytes]
2186	}
2187	return ""
2188	}
2189
2190	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2191	Rappture::Balloon $popup \
2192	-title "[Rappture::filexfer::label downloadWord] as..."
2193	set inner [$popup component inner]
2194	label $inner.summary -text "" -anchor w
2195	radiobutton $inner.vtk_button -text "VTK data file" \
2196	-variable [itcl::scope _downloadPopup(format)] \
2197	-font "Arial 9 " \
2198	-value vtk
2199	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2200	radiobutton $inner.image_button -text "Image File" \
2201	-variable [itcl::scope _downloadPopup(format)] \
2202	-font "Arial 9 " \
2203	-value image
2204	Rappture::Tooltip::for $inner.image_button \
2205	"Save as digital image."
2206
2207	button $inner.ok -text "Save" \
2208	-highlightthickness 0 -pady 2 -padx 3 \
2209	-command $command \
2210	-compound left \
2211	-image [Rappture::icon download]
2212
2213	button $inner.cancel -text "Cancel" \
2214	-highlightthickness 0 -pady 2 -padx 3 \
2215	-command [list $popup deactivate] \
2216	-compound left \
2217	-image [Rappture::icon cancel]
2218
2219	blt::table $inner \
2220	0,0 $inner.summary -cspan 2 \
2221	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2222	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2223	4,1 $inner.cancel -width .9i -fill y \
2224	4,0 $inner.ok -padx 2 -width .9i -fill y
2225	blt::table configure $inner r3 -height 4
2226	blt::table configure $inner r4 -pady 4
2227	raise $inner.image_button
2228	$inner.vtk_button invoke
2229	return $inner
2230	}
2231
2232	#
2233	# SetObjectStyle --
2234	#
2235	# Set the style of the heightmap/contour object. This gets calls
2236	# for each dataset once as it is loaded. It can overridden by
2237	# the user controls.
2238	#
2239	#
2240	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2241	# Parse style string.
2242	set tag $dataobj-$comp
2243	array set style {
2244	-color BCGYR
2245	-opacity 100
2246	-levels 10
2247	}
2248	set stylelist [$dataobj style $comp]
2249	if { $stylelist != "" } {
2250	array set style $stylelist
2251	}
2252	# This is too complicated. We want to set the colormap, number of
2253	# isolines and opacity for the dataset. They can be the default values,
2254	# the style hints loaded with the dataset, or set by user controls. As
2255	# datasets get loaded, they first use the defaults that are overidden
2256	# by the style hints. If the user changes the global controls, then that
2257	# overrides everything else. I don't know what it means when global
2258	# controls are specified as style hints by each dataset. It complicates
2259	# the code to handle aberrant cases.
2260
2261	if { $_changed(opacity) } {
2262	set style(-opacity) $_settings(opacity)
2263	}
2264	if { $_changed(numIsolines) } {
2265	set style(-levels) $_settings(numIsolines)
2266	}
2267	if { $_changed(colormap) } {
2268	set style(-color) $_settings(colormap)
2269	}
2270	if { $_currentColormap == "" } {
2271	$itk_component(colormap) value $style(-color)
2272	}
2273	set _currentOpacity $style(-opacity)
2274	if { $_currentNumIsolines != $style(-levels) } {
2275	set _currentNumIsolines $style(-levels)
2276	set _settings(numIsolines) $_currentNumIsolines
2277	$itk_component(numisolines) value $_currentNumIsolines
2278	UpdateContourList
2279	DrawLegend
2280	}
2281	SendCmd "outline add $tag"
2282	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2283	SendCmd "outline visible $_settings(outline) $tag"
2284	set scale [GetHeightmapScale]
2285	SendCmd "[list heightmap add contourlist $_contourList $scale $tag]"
2286	set _comp2scale($tag) $_settings(heightmapScale)
2287	SendCmd "heightmap edges $_settings(edges) $tag"
2288	SendCmd "heightmap wireframe $_settings(wireframe) $tag"
2289	SetCurrentColormap $style(-color)
2290	set color [$itk_component(isolinecolor) value]
2291	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2292	SendCmd "heightmap lighting $_settings(isHeightmap) $tag"
2293	}
2294
2295	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2296	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2297	return 0
2298	}
2299	return 1
2300	}
2301
2302	# ----------------------------------------------------------------------
2303	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2304	#
2305	# Invoked automatically whenever the "legend" command comes in from
2306	# the rendering server. Indicates that binary image data with the
2307	# specified <size> will follow.
2308	# ----------------------------------------------------------------------
2309	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2310	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2311	if { [isconnected] } {
2312	set bytes [ReceiveBytes $size]
2313	if { ![info exists _image(legend)] } {
2314	set _image(legend) [image create photo]
2315	}
2316	$_image(legend) configure -data $bytes
2317	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2318	if { [catch {DrawLegend} errs] != 0 } {
2319	global errorInfo
2320	puts stderr "errs=$errs errorInfo=$errorInfo"
2321	}
2322	}
2323	}
2324
2325	#
2326	# DrawLegend --
2327	#
2328	# Draws the legend in the own canvas on the right side of the plot area.
2329	#
2330	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2331	set fname $_curFldName
2332	set c $itk_component(view)
2333	set w [winfo width $c]
2334	set h [winfo height $c]
2335	set font "Arial 8"
2336	set lineht [font metrics $font -linespace]
2337
2338	if { [string match "component*" $fname] } {
2339	set title ""
2340	} else {
2341	if { [info exists _fields($fname)] } {
2342	foreach { title units } $_fields($fname) break
2343	if { $units != "" } {
2344	set title [format "%s (%s)" $title $units]
2345	}
2346	} else {
2347	set title $fname
2348	}
2349	}
2350	set x [expr $w - 2]
2351	if { !$_settings(legendVisible) } {
2352	$c delete legend
2353	return
2354	}
2355	if { [$c find withtag "legend"] == "" } {
2356	set y 2
2357	# If there's a legend title, create a text item for the title.
2358	$c create text $x $y \
2359	-anchor ne \
2360	-fill $itk_option(-plotforeground) -tags "title legend" \
2361	-font $font
2362	$c create text $x $y \
2363	-anchor ne \
2364	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2365	-font $font
2366	incr y $lineht
2367	$c create image $x $y \
2368	-anchor ne \
2369	-image $_image(legend) -tags "colormap legend"
2370	$c create rectangle $x $y 1 1 \
2371	-fill "" -outline "" -tags "sensor legend"
2372	$c create text $x [expr {$h-2}] \
2373	-anchor se \
2374	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2375	-font $font
2376	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2377	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2378	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2379	}
2380	$c delete isoline
2381	set x2 $x
2382	set iw [image width $_image(legend)]
2383	set ih [image height $_image(legend)]
2384	set x1 [expr $x2 - ($iw*12)/10]
2385	set color [$itk_component(isolinecolor) value]
2386
2387	# Draw the isolines on the legend.
2388	if { $color != "none" && [info exists _limits($_curFldName)] &&
2389	$_settings(isolinesVisible) && $_currentNumIsolines > 0 } {
2390
2391	foreach { vmin vmax } $_limits($_curFldName) break
2392	set range [expr double($vmax - $vmin)]
2393	if { $range <= 0.0 } {
2394	set range 1.0; # Min is greater or equal to max.
2395	}
2396	set tags "isoline legend"
2397	set offset [expr 2 + $lineht]
2398	if { $title != "" } {
2399	incr offset $lineht
2400	}
2401	foreach value $_contourList {
2402	set norm [expr 1.0 - (($value - $vmin) / $range)]
2403	set y1 [expr int(round(($norm * $ih) + $offset))]
2404	for { set off 0 } { $off < 3 } { incr off } {
2405	set _isolines([expr $y1 + $off]) $value
2406	set _isolines([expr $y1 - $off]) $value
2407	}
2408	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2409	}
2410	}
2411
2412	$c bind title <ButtonPress> [itcl::code $this Combo post]
2413	$c bind title <Enter> [itcl::code $this Combo activate]
2414	$c bind title <Leave> [itcl::code $this Combo deactivate]
2415	# Reset the item coordinates according the current size of the plot.
2416	if { [info exists _limits($_curFldName)] } {
2417	foreach { vmin vmax } $_limits($_curFldName) break
2418	$c itemconfigure vmin -text [format %g $vmin]
2419	$c itemconfigure vmax -text [format %g $vmax]
2420	}
2421	set y 2
2422	# If there's a legend title, move the title to the correct position
2423	if { $title != "" } {
2424	$c itemconfigure title -text $title
2425	$c coords title $x $y
2426	incr y $lineht
2427	}
2428	$c coords vmax $x $y
2429	incr y $lineht
2430	$c coords colormap $x $y
2431	set ix [image width $_image(legend)]
2432	set ih [image height $_image(legend)]
2433	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2434	$c raise sensor
2435	$c coords vmin $x [expr {$h - 2}]
2436	}
2437
2438	#
2439	# EnterLegend --
2440	#
2441	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2442	SetLegendTip $x $y
2443	}
2444
2445	#
2446	# MotionLegend --
2447	#
2448	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2449	Rappture::Tooltip::tooltip cancel
2450	set c $itk_component(view)
2451	set cw [winfo width $c]
2452	set ch [winfo height $c]
2453	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2454	SetLegendTip $x $y
2455	}
2456	}
2457
2458	#
2459	# LeaveLegend --
2460	#
2461	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2462	Rappture::Tooltip::tooltip cancel
2463	.rappturetooltip configure -icon ""
2464	}
2465
2466	#
2467	# SetLegendTip --
2468	#
2469	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2470	set fname $_curFldName
2471	set c $itk_component(view)
2472	set w [winfo width $c]
2473	set h [winfo height $c]
2474	set font "Arial 8"
2475	set lineht [font metrics $font -linespace]
2476
2477	set ih [image height $_image(legend)]
2478	# Subtract off the offset of the color ramp from the top of the canvas
2479	set iy [expr $y - ($lineht + 2)]
2480
2481	if { [string match "component*" $fname] } {
2482	set title ""
2483	} else {
2484	if { [info exists _fields($fname)] } {
2485	foreach { title units } $_fields($fname) break
2486	if { $units != "" } {
2487	set title [format "%s (%s)" $title $units]
2488	}
2489	} else {
2490	set title $fname
2491	}
2492	}
2493	# If there's a legend title, increase the offset by the line height.
2494	if { $title != "" } {
2495	incr iy -$lineht
2496	}
2497
2498	# Make a swatch of the selected color
2499	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2500	return
2501	}
2502
2503	if { ![info exists _image(swatch)] } {
2504	set _image(swatch) [image create photo -width 24 -height 24]
2505	}
2506	set color [eval format "\#%02x%02x%02x" $pixel]
2507	$_image(swatch) put black -to 0 0 23 23
2508	$_image(swatch) put $color -to 1 1 22 22
2509
2510	# Compute the value of the point
2511	if { [info exists _limits($fname)] } {
2512	foreach { vmin vmax } $_limits($fname) break
2513	set t [expr 1.0 - (double($iy) / double($ih-1))]
2514	set value [expr $t * ($vmax - $vmin) + $vmin]
2515	} else {
2516	set value 0.0
2517	}
2518	set tipx [expr $x + 15]
2519	set tipy [expr $y - 5]
2520	.rappturetooltip configure -icon $_image(swatch)
2521	if { [info exists _isolines($y)] } {
2522	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2523	} else {
2524	Rappture::Tooltip::text $c [format "$title %g" $value]
2525	}
2526	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2527	}
2528
2529	# ----------------------------------------------------------------------
2530	# USAGE: _dropdown post
2531	# USAGE: _dropdown unpost
2532	# USAGE: _dropdown select
2533	#
2534	# Used internally to handle the dropdown list for this combobox. The
2535	# post/unpost options are invoked when the list is posted or unposted
2536	# to manage the relief of the controlling button. The select option
2537	# is invoked whenever there is a selection from the list, to assign
2538	# the value back to the gauge.
2539	# ----------------------------------------------------------------------
2540	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2541	set c $itk_component(view)
2542	switch -- $option {
2543	post {
2544	foreach { x1 y1 x2 y2 } [$c bbox title] break
2545	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2546	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2547	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2548	tk_popup $itk_component(fieldmenu) $x $y
2549	}
2550	activate {
2551	$c itemconfigure title -fill red
2552	}
2553	deactivate {
2554	$c itemconfigure title -fill $itk_option(-plotforeground)
2555	}
2556	invoke {
2557	$itk_component(field) value $_curFldLabel
2558	AdjustSetting field
2559	}
2560	default {
2561	error "bad option \"$option\": should be post, unpost, select"
2562	}
2563	}
2564	}
2565
2566	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2567	if { $_settings(isHeightmap) } {
2568	set val $_settings(heightmapScale)
2569	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2570	return $sval
2571	}
2572	set sval 0
2573	}
2574
2575	itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2576	array set positions {
2577	front "0.707107 0.707107 0 0"
2578	back "0 0 0.707107 0.707107"
2579	left "0.5 0.5 -0.5 -0.5"
2580	right "0.5 0.5 0.5 0.5"
2581	top "1 0 0 0"
2582	bottom "0 1 0 0"
2583	}
2584	foreach name { qw qx qy qz } value $positions($side) {
2585	set _view($name) $value
2586	}
2587	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2588	$_arcball quaternion $q
2589	SendCmd "camera orient $q"
2590	SendCmd "camera reset"
2591	set _view(xpan) 0
2592	set _view(ypan) 0
2593	set _view(zoom) 1.0
2594	}
2595
2596	itcl::body Rappture::VtkHeightmapViewer::UpdateContourList {} {
2597	if { ![info exists _limits($_curFldName)] } {
2598	return
2599	}
2600	foreach { vmin vmax } $_limits($_curFldName) break
2601	set v [blt::vector create \#auto]
2602	$v seq $vmin $vmax [expr $_currentNumIsolines+2]
2603	$v delete end 0
2604	set _contourList [$v range 0 end]
2605	blt::vector destroy $v
2606	}

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