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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 3532

Last change on this file since 3532 was 3532, checked in by gah, 12 years ago
add axis exp 0 0 0 1
File size: 84.4 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkheightmapviewer - Vtk heightmap viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkHeightmapViewer.width 4i widgetDefault
19	option add VtkHeightmapViewercursor crosshair widgetDefault
20	option add *VtkHeightmapViewer.height 4i widgetDefault
21	option add *VtkHeightmapViewer.foreground black widgetDefault
22	option add *VtkHeightmapViewer.controlBackground gray widgetDefault
23	option add *VtkHeightmapViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkHeightmapViewer.plotBackground black widgetDefault
25	option add *VtkHeightmapViewer.plotForeground white widgetDefault
26	option add *VtkHeightmapViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkHeightmapViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkHeightmapViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkHeightmapViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40	itk_option define -mode mode Mode "contour"
41
42	constructor { hostlist args } {
43	Rappture::VisViewer::constructor $hostlist
44	} {
45	# defined below
46	}
47	destructor {
48	# defined below
49	}
50	public proc SetServerList { namelist } {
51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
52	}
53	public method add {dataobj {settings ""}}
54	public method camera {option args}
55	public method delete {args}
56	public method disconnect {}
57	public method download {option args}
58	public method get {args}
59	public method isconnected {}
60	public method limits3 { dataobj }
61	public method parameters {title args} {
62	# do nothing
63	}
64	public method scale {args}
65
66	protected method Connect {}
67	protected method CurrentDatasets {args}
68	protected method Disconnect {}
69	protected method DoResize {}
70	protected method DoRotate {}
71	protected method AdjustSetting {what {value ""}}
72	protected method AdjustMode {}
73	protected method InitSettings { args }
74	protected method Pan {option x y}
75	protected method Pick {x y}
76	protected method Rebuild {}
77	protected method ReceiveDataset { args }
78	protected method ReceiveImage { args }
79	protected method ReceiveLegend { colormap title min max size }
80	protected method Rotate {option x y}
81	protected method Zoom {option}
82
83	# The following methods are only used by this class.
84	private method BuildAxisTab {}
85	private method BuildCameraTab {}
86	private method BuildColormap { name }
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
110	private variable _arcball ""
111	private variable _dlist "" ; # list of data objects
112	private variable _obj2datasets
113	private variable _obj2ovride ; # maps dataobj => style override
114	private variable _comp2scale; # maps dataset to the heightmap scale.
115	private variable _datasets ; # contains all the dataobj-component
116	; # datasets in the server
117	private variable _colormaps ; # contains all the colormaps
118	; # in the server.
119
120	# The name of the current colormap used. The colormap is global to all
121	# heightmaps displayed.
122	private variable _currentColormap "" ;
123	private variable _currentNumIsolines "" ;
124	private variable _currentOpacity "" ;
125
126	private variable _click ; # info used for rotate operations
127	private variable _limits ; # Holds overall limits for all dataobjs
128	# using the viewer.
129	private variable _view ; # view params for 3D view
130	private variable _settings
131	private variable _changed
132	private variable _initialStyle ""; # First found style in dataobjects.
133	private variable _reset 1; # Indicates if camera needs to be reset
134	# to starting position.
135	private variable _beforeConnect 1; # Indicates if camera needs to be reset
136	# to starting position.
137
138	private variable _first "" ; # This is the topmost dataset.
139	private variable _start 0
140	private variable _isolines
141
142	common _downloadPopup; # download options from popup
143	private common _hardcopy
144	private variable _width 0
145	private variable _height 0
146	private variable _legendWidth 0
147	private variable _legendHeight 0
148	private variable _resizePending 0
149	private variable _rotatePending 0
150	private variable _legendPending 0
151	private variable _fieldNames {}
152	private variable _fields
153	private variable _curFldName ""
154	private variable _curFldLabel ""
155	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
156	}
157
158	itk::usual VtkHeightmapViewer {
159	keep -background -foreground -cursor -font
160	keep -plotbackground -plotforeground -mode
161	}
162
163	# ----------------------------------------------------------------------
164	# CONSTRUCTOR
165	# ----------------------------------------------------------------------
166	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
167	set _serverType "vtkvis"
168
169	EnableWaitDialog 1000
170	# Rebuild event
171	$_dispatcher register !rebuild
172	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
173
174	# Resize event
175	$_dispatcher register !resize
176	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
177
178	# Rotate event
179	$_dispatcher register !rotate
180	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
181
182	# Legend event
183	$_dispatcher register !legend
184	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
185
186	#
187	# Populate parser with commands handle incoming requests
188	#
189	$_parser alias image [itcl::code $this ReceiveImage]
190	$_parser alias dataset [itcl::code $this ReceiveDataset]
191	$_parser alias legend [itcl::code $this ReceiveLegend]
192
193	# Initialize the view to some default parameters.
194	array set _view {
195	qw 0.36
196	qx 0.25
197	qy 0.50
198	qz 0.70
199	zoom 1.0
200	xpan 0
201	ypan 0
202	ortho 1
203	}
204	set _arcball [blt::arcball create 100 100]
205	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
206	$_arcball quaternion $q
207
208	array set _settings {
209	axisFlymode "static"
210	axisMinorTicks 1
211	stretchToFit 0
212	axisLabels 1
213	axisVisible 1
214	axisXGrid 0
215	axisYGrid 0
216	axisZGrid 0
217	colormapVisible 1
218	colormapDiscrete 0
219	edges 0
220	field "Default"
221	heightmapScale 50
222	isHeightmap 0
223	isolineColor black
224	isolinesVisible 1
225	legendVisible 1
226	lighting 1
227	saveLighting 1
228	numIsolines 10
229	opacity 100
230	outline 0
231	wireframe 0
232	saveOpacity 100
233	}
234	array set _changed {
235	opacity 0
236	colormap 0
237	numIsolines 0
238	}
239	itk_component add view {
240	canvas $itk_component(plotarea).view \
241	-highlightthickness 0 -borderwidth 0
242	} {
243	usual
244	ignore -highlightthickness -borderwidth -background
245	}
246
247	itk_component add fieldmenu {
248	menu $itk_component(plotarea).menu \
249	-relief flat \
250	-tearoff no
251	} {
252	usual
253	ignore -background -foreground -relief -tearoff
254	}
255	set c $itk_component(view)
256	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
257	bind $c <4> [itcl::code $this Zoom in 0.25]
258	bind $c <5> [itcl::code $this Zoom out 0.25]
259	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
260	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
261	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
262	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
263	bind $c <Enter> "focus %W"
264	bind $c <Control-F1> [itcl::code $this ToggleConsole]
265
266	# Fix the scrollregion in case we go off screen
267	$c configure -scrollregion [$c bbox all]
268
269	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
270	set _map(cwidth) -1
271	set _map(cheight) -1
272	set _map(zoom) 1.0
273	set _map(original) ""
274
275	set f [$itk_component(main) component controls]
276	itk_component add reset {
277	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
278	-highlightthickness 0 \
279	-image [Rappture::icon reset-view] \
280	-command [itcl::code $this Zoom reset]
281	} {
282	usual
283	ignore -highlightthickness
284	}
285	pack $itk_component(reset) -side top -padx 2 -pady 2
286	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
287
288	itk_component add zoomin {
289	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
290	-highlightthickness 0 \
291	-image [Rappture::icon zoom-in] \
292	-command [itcl::code $this Zoom in]
293	} {
294	usual
295	ignore -highlightthickness
296	}
297	pack $itk_component(zoomin) -side top -padx 2 -pady 2
298	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
299
300	itk_component add zoomout {
301	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
302	-highlightthickness 0 \
303	-image [Rappture::icon zoom-out] \
304	-command [itcl::code $this Zoom out]
305	} {
306	usual
307	ignore -highlightthickness
308	}
309	pack $itk_component(zoomout) -side top -padx 2 -pady 2
310	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
311
312	itk_component add mode {
313	Rappture::PushButton $f.mode \
314	-onimage [Rappture::icon surface] \
315	-offimage [Rappture::icon surface] \
316	-variable [itcl::scope _settings(isHeightmap)] \
317	-command [itcl::code $this AdjustSetting isHeightmap] \
318	}
319	Rappture::Tooltip::for $itk_component(mode) \
320	"Toggle the surface/contour on/off"
321	pack $itk_component(mode) -padx 2 -pady 2
322
323	if { [catch {
324	BuildContourTab
325	BuildAxisTab
326	BuildCameraTab
327	} errs] != 0 } {
328	global errorInfo
329	puts stderr "errs=$errs errorInfo=$errorInfo"
330	}
331	set _image(legend) [image create photo]
332
333	# Hack around the Tk panewindow. The problem is that the requested
334	# size of the 3d view isn't set until an image is retrieved from
335	# the server. So the panewindow uses the tiny size.
336	set w 10000
337	pack forget $itk_component(view)
338	blt::table $itk_component(plotarea) \
339	0,0 $itk_component(view) -fill both -reqwidth $w
340	blt::table configure $itk_component(plotarea) c1 -resize none
341
342	# Bindings for panning via mouse
343	bind $itk_component(view) <ButtonPress-2> \
344	[itcl::code $this Pan click %x %y]
345	bind $itk_component(view) <B2-Motion> \
346	[itcl::code $this Pan drag %x %y]
347	bind $itk_component(view) <ButtonRelease-2> \
348	[itcl::code $this Pan release %x %y]
349
350	#bind $itk_component(view) <ButtonRelease-3> \
351	# [itcl::code $this Pick %x %y]
352
353	# Bindings for panning via keyboard
354	bind $itk_component(view) <KeyPress-Left> \
355	[itcl::code $this Pan set -10 0]
356	bind $itk_component(view) <KeyPress-Right> \
357	[itcl::code $this Pan set 10 0]
358	bind $itk_component(view) <KeyPress-Up> \
359	[itcl::code $this Pan set 0 -10]
360	bind $itk_component(view) <KeyPress-Down> \
361	[itcl::code $this Pan set 0 10]
362	bind $itk_component(view) <Shift-KeyPress-Left> \
363	[itcl::code $this Pan set -2 0]
364	bind $itk_component(view) <Shift-KeyPress-Right> \
365	[itcl::code $this Pan set 2 0]
366	bind $itk_component(view) <Shift-KeyPress-Up> \
367	[itcl::code $this Pan set 0 -2]
368	bind $itk_component(view) <Shift-KeyPress-Down> \
369	[itcl::code $this Pan set 0 2]
370
371	# Bindings for zoom via keyboard
372	bind $itk_component(view) <KeyPress-Prior> \
373	[itcl::code $this Zoom out]
374	bind $itk_component(view) <KeyPress-Next> \
375	[itcl::code $this Zoom in]
376
377	bind $itk_component(view) <Enter> "focus $itk_component(view)"
378
379	if {[string equal "x11" [tk windowingsystem]]} {
380	# Bindings for zoom via mouse
381	bind $itk_component(view) <4> [itcl::code $this Zoom out]
382	bind $itk_component(view) <5> [itcl::code $this Zoom in]
383	}
384
385	set _image(download) [image create photo]
386
387	eval itk_initialize $args
388	Connect
389	set _beforeConnect 0
390	}
391
392	# ----------------------------------------------------------------------
393	# DESTRUCTOR
394	# ----------------------------------------------------------------------
395	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
396	Disconnect
397	image delete $_image(plot)
398	image delete $_image(download)
399	catch { blt::arcball destroy $_arcball }
400	}
401
402	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
403	if { $_width < 2 } {
404	set _width 500
405	}
406	if { $_height < 2 } {
407	set _height 500
408	}
409	set _start [clock clicks -milliseconds]
410	SendCmd "screen size [expr $_width - 20] $_height"
411
412	set font "Arial 8"
413	set lh [font metrics $font -linespace]
414	set h [expr {$_height - 2 * ($lh + 2)}]
415	if { $h != $_legendHeight } {
416	EventuallyRequestLegend
417	} else {
418	DrawLegend
419	}
420	set _resizePending 0
421	}
422
423	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
424	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
425	SendCmd "camera orient $q"
426	set _rotatePending 0
427	}
428
429	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
430	if { !$_legendPending } {
431	set _legendPending 1
432	$_dispatcher event -idle !legend
433	}
434	}
435
436	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
437	set _width $w
438	set _height $h
439	$_arcball resize $w $h
440	if { !$_resizePending } {
441	set _resizePending 1
442	$_dispatcher event -after 250 !resize
443	}
444	}
445
446	set rotate_delay 100
447
448	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
449	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
450	if { !$_rotatePending } {
451	set _rotatePending 1
452	global rotate_delay
453	$_dispatcher event -after $rotate_delay !rotate
454	}
455	}
456
457	# ----------------------------------------------------------------------
458	# USAGE: add <dataobj> ?<settings>?
459	#
460	# Clients use this to add a data object to the plot. The optional
461	# <settings> are used to configure the plot. Allowed settings are
462	# -color, -brightness, -width, -linestyle, and -raise.
463	# ----------------------------------------------------------------------
464	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
465	array set params {
466	-color auto
467	-width 1
468	-linestyle solid
469	-brightness 0
470	-raise 0
471	-description ""
472	-param ""
473	-type ""
474	}
475	array set params $settings
476	set params(-description) ""
477	set params(-param) ""
478	foreach {opt val} $settings {
479	if {![info exists params($opt)]} {
480	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
481	}
482	set params($opt) $val
483	}
484	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
485	# can't handle -autocolors yet
486	set params(-color) white
487	}
488	set pos [lsearch -exact $dataobj $_dlist]
489	if {$pos < 0} {
490	lappend _dlist $dataobj
491	}
492	set _obj2ovride($dataobj-color) $params(-color)
493	set _obj2ovride($dataobj-width) $params(-width)
494	set _obj2ovride($dataobj-raise) $params(-raise)
495	$_dispatcher event -idle !rebuild
496	}
497
498
499	# ----------------------------------------------------------------------
500	# USAGE: delete ?<dataobj1> <dataobj2> ...?
501	#
502	# Clients use this to delete a dataobj from the plot. If no dataobjs
503	# are specified, then all dataobjs are deleted. No data objects are
504	# deleted. They are only removed from the display list.
505	#
506	# ----------------------------------------------------------------------
507	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
508	if { [llength $args] == 0} {
509	set args $_dlist
510	}
511	# Delete all specified dataobjs
512	set changed 0
513	foreach dataobj $args {
514	set pos [lsearch -exact $_dlist $dataobj]
515	if { $pos < 0 } {
516	continue; # Don't know anything about it.
517	}
518	# Remove it from the dataobj list.
519	set _dlist [lreplace $_dlist $pos $pos]
520	array unset _obj2ovride $dataobj-*
521	array unset _settings $dataobj-*
522	# Append to the end of the dataobj list.
523	#lappend _dlist $dataobj
524	set changed 1
525	}
526	# If anything changed, then rebuild the plot
527	if { $changed } {
528	$_dispatcher event -idle !rebuild
529	}
530	}
531
532	# ----------------------------------------------------------------------
533	# USAGE: get ?-objects?
534	# USAGE: get ?-visible?
535	# USAGE: get ?-image view?
536	#
537	# Clients use this to query the list of objects being plotted, in
538	# order from bottom to top of this result. The optional "-image"
539	# flag can also request the internal images being shown.
540	# ----------------------------------------------------------------------
541	itcl::body Rappture::VtkHeightmapViewer::get {args} {
542	if {[llength $args] == 0} {
543	set args "-objects"
544	}
545
546	set op [lindex $args 0]
547	switch -- $op {
548	"-objects" {
549	# put the dataobj list in order according to -raise options
550	set dlist {}
551	foreach dataobj $_dlist {
552	if { ![IsValidObject $dataobj] } {
553	continue
554	}
555	if {[info exists _obj2ovride($dataobj-raise)] &&
556	$_obj2ovride($dataobj-raise)} {
557	set dlist [linsert $dlist 0 $dataobj]
558	} else {
559	lappend dlist $dataobj
560	}
561	}
562	return $dlist
563	}
564	"-visible" {
565	set dlist {}
566	foreach dataobj $_dlist {
567	if { ![IsValidObject $dataobj] } {
568	continue
569	}
570	if { ![info exists _obj2ovride($dataobj-raise)] } {
571	# No setting indicates that the object isn't visible.
572	continue
573	}
574	# Otherwise use the -raise parameter to put the object to
575	# the front of the list.
576	if { $_obj2ovride($dataobj-raise) } {
577	set dlist [linsert $dlist 0 $dataobj]
578	} else {
579	lappend dlist $dataobj
580	}
581	}
582	return $dlist
583	}
584	-image {
585	if {[llength $args] != 2} {
586	error "wrong # args: should be \"get -image view\""
587	}
588	switch -- [lindex $args end] {
589	view {
590	return $_image(plot)
591	}
592	default {
593	error "bad image name \"[lindex $args end]\": should be view"
594	}
595	}
596	}
597	default {
598	error "bad option \"$op\": should be -objects or -image"
599	}
600	}
601	}
602
603	#
604	# scale --
605	#
606	# This gets called either incrementally as new simulations are
607	# added or all at once as a sequence of heightmaps.
608	# This accounts for all objects--even those not showing on the
609	# screen. Because of this, the limits are appropriate for all
610	# objects as the user scans through data in the ResultSet viewer.
611	#
612	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
613	foreach dataobj $args {
614	foreach axis { x y } {
615	set lim [$dataobj limits $axis]
616	if { ![info exists _limits($axis)] } {
617	set _limits($axis) $lim
618	continue
619	}
620	foreach {min max} $lim break
621	foreach {amin amax} $_limits($axis) break
622	if { $amin > $min } {
623	set amin $min
624	}
625	if { $amax < $max } {
626	set amax $max
627	}
628	set _limits($axis) [list $amin $amax]
629	}
630	foreach { fname lim } [$dataobj fieldlimits] {
631	if { ![info exists _limits($fname)] } {
632	set _limits($fname) $lim
633	continue
634	}
635	foreach {min max} $lim break
636	foreach {fmin fmax} $_limits($fname) break
637	if { $fmin > $min } {
638	set fmin $min
639	}
640	if { $fmax < $max } {
641	set fmax $max
642	}
643	set _limits($fname) [list $fmin $fmax]
644	}
645	}
646	}
647
648	# ----------------------------------------------------------------------
649	# USAGE: download coming
650	# USAGE: download controls <downloadCommand>
651	# USAGE: download now
652	#
653	# Clients use this method to create a downloadable representation
654	# of the plot. Returns a list of the form {ext string}, where
655	# "ext" is the file extension (indicating the type of data) and
656	# "string" is the data itself.
657	# ----------------------------------------------------------------------
658	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
659	switch $option {
660	coming {
661	if {[catch {
662	blt::winop snap $itk_component(plotarea) $_image(download)
663	}]} {
664	$_image(download) configure -width 1 -height 1
665	$_image(download) put #000000
666	}
667	}
668	controls {
669	set popup .vtkviewerdownload
670	if { ![winfo exists .vtkviewerdownload] } {
671	set inner [BuildDownloadPopup $popup [lindex $args 0]]
672	} else {
673	set inner [$popup component inner]
674	}
675	set _downloadPopup(image_controls) $inner.image_frame
676	set num [llength [get]]
677	set num [expr {($num == 1) ? "1 result" : "$num results"}]
678	set word [Rappture::filexfer::label downloadWord]
679	$inner.summary configure -text "$word $num in the following format:"
680	update idletasks ;# Fix initial sizes
681	return $popup
682	}
683	now {
684	set popup .vtkviewerdownload
685	if {[winfo exists .vtkviewerdownload]} {
686	$popup deactivate
687	}
688	switch -- $_downloadPopup(format) {
689	"image" {
690	return [$this GetImage [lindex $args 0]]
691	}
692	"vtk" {
693	return [$this GetVtkData [lindex $args 0]]
694	}
695	}
696	return ""
697	}
698	default {
699	error "bad option \"$option\": should be coming, controls, now"
700	}
701	}
702	}
703
704	# ----------------------------------------------------------------------
705	# USAGE: Connect ?<host:port>,<host:port>...?
706	#
707	# Clients use this method to establish a connection to a new
708	# server, or to reestablish a connection to the previous server.
709	# Any existing connection is automatically closed.
710	# ----------------------------------------------------------------------
711	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
712	global readyForNextFrame
713	set readyForNextFrame 1
714	set _reset 1
715	set _hosts [GetServerList "vtkvis"]
716	if { "" == $_hosts } {
717	return 0
718	}
719	set result [VisViewer::Connect $_hosts]
720	if { $result } {
721	set w [winfo width $itk_component(view)]
722	set h [winfo height $itk_component(view)]
723	EventuallyResize $w $h
724	}
725	return $result
726	}
727
728	#
729	# isconnected --
730	#
731	# Indicates if we are currently connected to the visualization server.
732	#
733	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
734	return [VisViewer::IsConnected]
735	}
736
737	#
738	# disconnect --
739	#
740	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
741	Disconnect
742	set _reset 1
743	}
744
745	#
746	# Disconnect --
747	#
748	# Clients use this method to disconnect from the current rendering
749	# server.
750	#
751	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
752	VisViewer::Disconnect
753
754	$_dispatcher cancel !rebuild
755	$_dispatcher cancel !resize
756	$_dispatcher cancel !rotate
757	$_dispatcher cancel !legend
758	# disconnected -- no more data sitting on server
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	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
769	#
770	# Invoked automatically whenever the "image" command comes in from
771	# the rendering server. Indicates that binary image data with the
772	# specified <size> will follow.
773	# ----------------------------------------------------------------------
774	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
775	global readyForNextFrame
776	set readyForNextFrame 1
777	array set info {
778	-token "???"
779	-bytes 0
780	-type image
781	}
782	array set info $args
783	set bytes [ReceiveBytes $info(-bytes)]
784	if { $info(-type) == "image" } {
785	if 0 {
786	set f [open "last.ppm" "w"]
787	puts $f $bytes
788	close $f
789	}
790	$_image(plot) configure -data $bytes
791	set time [clock seconds]
792	set date [clock format $time]
793	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
794	if { $_start > 0 } {
795	set finish [clock clicks -milliseconds]
796	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
797	set _start 0
798	}
799	} elseif { $info(type) == "print" } {
800	set tag $this-print-$info(-token)
801	set _hardcopy($tag) $bytes
802	}
803	}
804
805	#
806	# ReceiveDataset --
807	#
808	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
809	if { ![isconnected] } {
810	return
811	}
812	set option [lindex $args 0]
813	switch -- $option {
814	"scalar" {
815	set option [lindex $args 1]
816	switch -- $option {
817	"world" {
818	foreach { x y z value tag } [lrange $args 2 end] break
819	}
820	"pixel" {
821	foreach { x y value tag } [lrange $args 2 end] break
822	}
823	}
824	}
825	"vector" {
826	set option [lindex $args 1]
827	switch -- $option {
828	"world" {
829	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
830	}
831	"pixel" {
832	foreach { x y vx vy vz tag } [lrange $args 2 end] break
833	}
834	}
835	}
836	"names" {
837	foreach { name } [lindex $args 1] {
838	#puts stderr "Dataset: $name"
839	}
840	}
841	default {
842	error "unknown dataset option \"$option\" from server"
843	}
844	}
845	}
846
847	# ----------------------------------------------------------------------
848	# USAGE: Rebuild
849	#
850	# Called automatically whenever something changes that affects the
851	# data in the widget. Clears any existing data and rebuilds the
852	# widget to display new data.
853	# ----------------------------------------------------------------------
854	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
855	set w [winfo width $itk_component(view)]
856	set h [winfo height $itk_component(view)]
857	if { $w < 2 \|\| $h < 2 } {
858	$_dispatcher event -idle !rebuild
859	return
860	}
861
862	# Turn on buffering of commands to the server. We don't want to
863	# be preempted by a server disconnect/reconnect (which automatically
864	# generates a new call to Rebuild).
865	StartBufferingCommands
866
867	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
868	set _width $w
869	set _height $h
870	$_arcball resize $w $h
871	DoResize
872	if { $_settings(stretchToFit) } {
873	AdjustSetting stretchToFit
874	}
875	}
876	if { $_reset } {
877	if { $_reportClientInfo } {
878	# Tell the server the name of the tool, the version, and dataset
879	# that we are rendering. Have to do it here because we don't know
880	# what data objects are using the renderer until be get here.
881	global env
882
883	set info {}
884	set user "???"
885	if { [info exists env(USER)] } {
886	set user $env(USER)
887	}
888	set session "???"
889	if { [info exists env(SESSION)] } {
890	set session $env(SESSION)
891	}
892	lappend info "hub" [exec hostname]
893	lappend info "client" "vtkheightmapviewer"
894	lappend info "user" $user
895	lappend info "session" $session
896	SendCmd "clientinfo [list $info]"
897	}
898	InitSettings isHeightmap background
899	#
900	# Reset the camera and other view parameters
901	#
902	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
903
904	# Let's see how this goes. I think it's preferable to overloading the
905	# axis title with the exponent.
906	SendCmd "axis exp 0 0 0 1"
907
908	SendCmd "axis lrot z 90"
909	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
910	$_arcball quaternion $q
911	if {$_settings(isHeightmap) } {
912	if { $_view(ortho)} {
913	SendCmd "camera mode ortho"
914	} else {
915	SendCmd "camera mode persp"
916	}
917	SendCmd "camera reset"
918	DoRotate
919	}
920	PanCamera
921	StopBufferingCommands
922	SendCmd "imgflush"
923	StartBufferingCommands
924	}
925
926	set _first ""
927	# Start off with no datasets are visible.
928	SendCmd "dataset visible 0"
929	set scale [GetHeightmapScale]
930	foreach dataobj [get -objects] {
931	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
932	set _first $dataobj
933	}
934	set _obj2datasets($dataobj) ""
935	foreach comp [$dataobj components] {
936	set tag $dataobj-$comp
937	if { ![info exists _datasets($tag)] } {
938	set bytes [$dataobj vtkdata $comp]
939	if 0 {
940	set f [open /tmp/vtkheightmap.vtk "w"]
941	puts $f $bytes
942	close $f
943	}
944	set length [string length $bytes]
945	if { $_reportClientInfo } {
946	set info {}
947	lappend info "tool_id" [$dataobj hints toolId]
948	lappend info "tool_name" [$dataobj hints toolName]
949	lappend info "tool_version" [$dataobj hints toolRevision]
950	lappend info "tool_title" [$dataobj hints toolTitle]
951	lappend info "dataset_label" [$dataobj hints label]
952	lappend info "dataset_size" $length
953	lappend info "dataset_tag" $tag
954	SendCmd [list "clientinfo" $info]
955	}
956	SendCmd "dataset add $tag data follows $length"
957	append _outbuf $bytes
958	set _datasets($tag) 1
959	SetObjectStyle $dataobj $comp
960	}
961	lappend _obj2datasets($dataobj) $tag
962	if { [info exists _obj2ovride($dataobj-raise)] } {
963	# Setting dataset visible enables outline (if enabled)
964	# and heightmap
965	SendCmd "dataset visible 1 $tag"
966	}
967	if { ![info exists _comp2scale($tag)] \|\|
968	$_comp2scale($tag) != $scale } {
969	SendCmd "heightmap heightscale $scale $tag"
970	set _comp2scale($tag) $scale
971	}
972	}
973	}
974	if { $_first != "" } {
975	$itk_component(field) choices delete 0 end
976	$itk_component(fieldmenu) delete 0 end
977	array unset _fields
978	set _curFldName ""
979	foreach cname [$_first components] {
980	foreach fname [$_first fieldnames $cname] {
981	if { [info exists _fields($fname)] } {
982	continue
983	}
984	foreach { label units components } \
985	[$_first fieldinfo $fname] break
986	$itk_component(field) choices insert end "$fname" "$label"
987	$itk_component(fieldmenu) add radiobutton -label "$label" \
988	-value $label -variable [itcl::scope _curFldLabel] \
989	-selectcolor red \
990	-activebackground $itk_option(-plotbackground) \
991	-activeforeground $itk_option(-plotforeground) \
992	-font "Arial 8" \
993	-command [itcl::code $this Combo invoke]
994	set _fields($fname) [list $label $units $components]
995	if { $_curFldName == "" } {
996	set _curFldName $fname
997	set _curFldLabel $label
998	}
999	}
1000	}
1001	$itk_component(field) value $_curFldLabel
1002	}
1003	InitSettings stretchToFit
1004
1005	if { $_reset } {
1006	SendCmd "axis tickpos outside"
1007	foreach axis { x y z } {
1008	SendCmd "axis lformat $axis %g"
1009	}
1010
1011	foreach axis { x y z } {
1012	set label [$_first hints ${axis}label]
1013	if { $label == "" } {
1014	if {$axis == "z"} {
1015	if { [string match "component*" $_curFldName] } {
1016	set label [string toupper $axis]
1017	} else {
1018	set label $_curFldLabel
1019	}
1020	} else {
1021	set label [string toupper $axis]
1022	}
1023	}
1024	# May be a space in the axis label.
1025	SendCmd [list axis name $axis $label]
1026
1027	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1028	set units [lindex $_fields($_curFldName) 1]
1029	} else {
1030	set units [$_first hints ${axis}units]
1031	}
1032	if { $units != "" } {
1033	# May be a space in the axis units.
1034	SendCmd [list axis units $axis $units]
1035	}
1036	}
1037	#
1038	# Reset the camera and other view parameters
1039	#
1040	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
1041	SendCmd "dataset color [Color2RGB $itk_option(-plotforeground)]"
1042	ResetAxes
1043	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1044	$_arcball quaternion $q
1045	if {$_settings(isHeightmap) } {
1046	if { $_view(ortho)} {
1047	SendCmd "camera mode ortho"
1048	} else {
1049	SendCmd "camera mode persp"
1050	}
1051	SendCmd "camera reset"
1052	DoRotate
1053	}
1054	PanCamera
1055	InitSettings axisXGrid axisYGrid axisZGrid \
1056	axisVisible axisLabels
1057	InitSettings heightmapScale field isHeightmap
1058	if { [array size _fields] < 2 } {
1059	blt::table forget $itk_component(field) $itk_component(field_l)
1060	}
1061	RequestLegend
1062	set _reset 0
1063	}
1064	global readyForNextFrame
1065	set readyForNextFrame 0; # Don't advance to the next frame
1066
1067	# Actually write the commands to the server socket. If it fails, we don't
1068	# care. We're finished here.
1069	blt::busy hold $itk_component(hull)
1070	StopBufferingCommands
1071	blt::busy release $itk_component(hull)
1072	}
1073
1074	# ----------------------------------------------------------------------
1075	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1076	#
1077	# Returns a list of server IDs for the current datasets being displayed. This
1078	# is normally a single ID, but it might be a list of IDs if the current data
1079	# object has multiple components.
1080	# ----------------------------------------------------------------------
1081	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1082	set flag [lindex $args 0]
1083	switch -- $flag {
1084	"-all" {
1085	if { [llength $args] > 1 } {
1086	error "CurrentDatasets: can't specify dataobj after \"-all\""
1087	}
1088	set dlist [get -objects]
1089	}
1090	"-visible" {
1091	if { [llength $args] > 1 } {
1092	set dlist {}
1093	set args [lrange $args 1 end]
1094	foreach dataobj $args {
1095	if { [info exists _obj2ovride($dataobj-raise)] } {
1096	lappend dlist $dataobj
1097	}
1098	}
1099	} else {
1100	set dlist [get -visible]
1101	}
1102	}
1103	default {
1104	set dlist $args
1105	}
1106	}
1107	set rlist ""
1108	foreach dataobj $dlist {
1109	foreach comp [$dataobj components] {
1110	set tag $dataobj-$comp
1111	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1112	lappend rlist $tag
1113	}
1114	}
1115	}
1116	return $rlist
1117	}
1118
1119	# ----------------------------------------------------------------------
1120	# USAGE: Zoom in
1121	# USAGE: Zoom out
1122	# USAGE: Zoom reset
1123	#
1124	# Called automatically when the user clicks on one of the zoom
1125	# controls for this widget. Changes the zoom for the current view.
1126	# ----------------------------------------------------------------------
1127	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1128	switch -- $option {
1129	"in" {
1130	set _view(zoom) [expr {$_view(zoom)*1.25}]
1131	SendCmd "camera zoom $_view(zoom)"
1132	}
1133	"out" {
1134	set _view(zoom) [expr {$_view(zoom)*0.8}]
1135	SendCmd "camera zoom $_view(zoom)"
1136	}
1137	"reset" {
1138	array set _view {
1139	qw 0.36
1140	qx 0.25
1141	qy 0.50
1142	qz 0.70
1143	zoom 1.0
1144	xpan 0
1145	ypan 0
1146	}
1147	if { $_first != "" } {
1148	set location [$_first hints camera]
1149	if { $location != "" } {
1150	array set _view $location
1151	}
1152	}
1153	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1154	$_arcball quaternion $q
1155	SendCmd "camera reset"
1156	if {$_settings(isHeightmap) } {
1157	DoRotate
1158	}
1159	}
1160	}
1161	}
1162
1163	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1164	set x $_view(xpan)
1165	set y $_view(ypan)
1166	SendCmd "camera pan $x $y"
1167	}
1168
1169
1170	# ----------------------------------------------------------------------
1171	# USAGE: Rotate click <x> <y>
1172	# USAGE: Rotate drag <x> <y>
1173	# USAGE: Rotate release <x> <y>
1174	#
1175	# Called automatically when the user clicks/drags/releases in the
1176	# plot area. Moves the plot according to the user's actions.
1177	# ----------------------------------------------------------------------
1178	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1179	switch -- $option {
1180	"click" {
1181	$itk_component(view) configure -cursor fleur
1182	set _click(x) $x
1183	set _click(y) $y
1184	}
1185	"drag" {
1186	if {[array size _click] == 0} {
1187	Rotate click $x $y
1188	} else {
1189	set w [winfo width $itk_component(view)]
1190	set h [winfo height $itk_component(view)]
1191	if {$w <= 0 \|\| $h <= 0} {
1192	return
1193	}
1194
1195	if {[catch {
1196	# this fails sometimes for no apparent reason
1197	set dx [expr {double($x-$_click(x))/$w}]
1198	set dy [expr {double($y-$_click(y))/$h}]
1199	}]} {
1200	return
1201	}
1202	if { $dx == 0 && $dy == 0 } {
1203	return
1204	}
1205	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1206	EventuallyRotate $q
1207	set _click(x) $x
1208	set _click(y) $y
1209	}
1210	}
1211	"release" {
1212	Rotate drag $x $y
1213	$itk_component(view) configure -cursor ""
1214	catch {unset _click}
1215	}
1216	default {
1217	error "bad option \"$option\": should be click, drag, release"
1218	}
1219	}
1220	}
1221
1222	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1223	foreach tag [CurrentDatasets -visible] {
1224	SendCmd "dataset getscalar pixel $x $y $tag"
1225	}
1226	}
1227
1228	# ----------------------------------------------------------------------
1229	# USAGE: $this Pan click x y
1230	# $this Pan drag x y
1231	# $this Pan release x y
1232	#
1233	# Called automatically when the user clicks on one of the zoom
1234	# controls for this widget. Changes the zoom for the current view.
1235	# ----------------------------------------------------------------------
1236	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1237	switch -- $option {
1238	"set" {
1239	set w [winfo width $itk_component(view)]
1240	set h [winfo height $itk_component(view)]
1241	set x [expr $x / double($w)]
1242	set y [expr $y / double($h)]
1243	set _view(xpan) [expr $_view(xpan) + $x]
1244	set _view(ypan) [expr $_view(ypan) + $y]
1245	PanCamera
1246	return
1247	}
1248	"click" {
1249	set _click(x) $x
1250	set _click(y) $y
1251	$itk_component(view) configure -cursor hand1
1252	}
1253	"drag" {
1254	if { ![info exists _click(x)] } {
1255	set _click(x) $x
1256	}
1257	if { ![info exists _click(y)] } {
1258	set _click(y) $y
1259	}
1260	set w [winfo width $itk_component(view)]
1261	set h [winfo height $itk_component(view)]
1262	set dx [expr ($_click(x) - $x)/double($w)]
1263	set dy [expr ($_click(y) - $y)/double($h)]
1264	set _click(x) $x
1265	set _click(y) $y
1266	set _view(xpan) [expr $_view(xpan) - $dx]
1267	set _view(ypan) [expr $_view(ypan) - $dy]
1268	PanCamera
1269	}
1270	"release" {
1271	Pan drag $x $y
1272	$itk_component(view) configure -cursor ""
1273	}
1274	default {
1275	error "unknown option \"$option\": should set, click, drag, or release"
1276	}
1277	}
1278	}
1279
1280	# ----------------------------------------------------------------------
1281	# USAGE: InitSettings <what> ?<value>?
1282	#
1283	# Used internally to update rendering settings whenever parameters
1284	# change in the popup settings panel. Sends the new settings off
1285	# to the back end.
1286	# ----------------------------------------------------------------------
1287	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1288	foreach spec $args {
1289	if { [info exists _settings($_first-$spec)] } {
1290	# Reset global setting with dataobj specific setting
1291	set _settings($spec) $_settings($_first-$spec)
1292	}
1293	AdjustSetting $spec
1294	}
1295	}
1296
1297	#
1298	# AdjustSetting --
1299	#
1300	# Changes/updates a specific setting in the widget. There are
1301	# usually user-setable option. Commands are sent to the render
1302	# server.
1303	#
1304	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1305	if { $_beforeConnect } {
1306	return
1307	}
1308	switch -- $what {
1309	"axisFlymode" {
1310	set mode [$itk_component(axisflymode) value]
1311	set mode [$itk_component(axisflymode) translate $mode]
1312	set _settings($what) $mode
1313	SendCmd "axis flymode $mode"
1314	}
1315	"axisLabels" {
1316	set bool $_settings(axisLabels)
1317	SendCmd "axis labels all $bool"
1318	}
1319	"axisMinorTicks" {
1320	set bool $_settings(axisMinorTicks)
1321	foreach axis { x y z } {
1322	SendCmd "axis minticks ${axis} $bool"
1323	}
1324	}
1325	"axisVisible" {
1326	set bool $_settings(axisVisible)
1327	SendCmd "axis visible all $bool"
1328	}
1329	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1330	set axis [string tolower [string range $what 4 4]]
1331	set bool $_settings($what)
1332	SendCmd "axis grid $axis $bool"
1333	}
1334	"background" {
1335	set bgcolor [$itk_component(background) value]
1336	array set fgcolors {
1337	"black" "white"
1338	"white" "black"
1339	"grey" "black"
1340	}
1341	configure -plotbackground $bgcolor \
1342	-plotforeground $fgcolors($bgcolor)
1343	$itk_component(view) delete "legend"
1344	DrawLegend
1345	}
1346	"colormap" {
1347	set _changed(colormap) 1
1348	StartBufferingCommands
1349	set color [$itk_component(colormap) value]
1350	set _settings(colormap) $color
1351	if { $color == "none" } {
1352	if { $_settings(colormapVisible) } {
1353	SendCmd "heightmap surface 0"
1354	set _settings(colormapVisible) 0
1355	}
1356	} else {
1357	if { !$_settings(colormapVisible) } {
1358	SendCmd "heightmap surface 1"
1359	set _settings(colormapVisible) 1
1360	}
1361	SetCurrentColormap $color
1362	if {$_settings(colormapDiscrete)} {
1363	set numColors [expr $_settings(numIsolines) - 1]
1364	SendCmd "colormap res $numColors $color"
1365	}
1366	}
1367	StopBufferingCommands
1368	EventuallyRequestLegend
1369	}
1370	"colormapVisible" {
1371	set bool $_settings($what)
1372	SendCmd "heightmap surface $bool"
1373	}
1374	"colormapDiscrete" {
1375	set bool $_settings($what)
1376	set numColors [expr $_settings(numIsolines) - 1]
1377	StartBufferingCommands
1378	if {$bool} {
1379	SendCmd "colormap res $numColors"
1380	} else {
1381	SendCmd "colormap res default"
1382	}
1383	SendCmd "heightmap preinterp $bool"
1384	StopBufferingCommands
1385	EventuallyRequestLegend
1386	}
1387	"edges" {
1388	set bool $_settings(edges)
1389	SendCmd "heightmap edges $bool"
1390	}
1391	"field" {
1392	set label [$itk_component(field) value]
1393	set fname [$itk_component(field) translate $label]
1394	set _settings(field) $fname
1395	if { [info exists _fields($fname)] } {
1396	foreach { label units components } $_fields($fname) break
1397	if { $components > 1 } {
1398	set _colorMode vmag
1399	} else {
1400	set _colorMode scalar
1401	}
1402	set _curFldName $fname
1403	set _curFldLabel $label
1404	} else {
1405	puts stderr "unknown field \"$fname\""
1406	return
1407	}
1408	set label [$_first hints zlabel]
1409	if { $label == "" } {
1410	if { [string match "component*" $_curFldName] } {
1411	set label Z
1412	} else {
1413	set label $_curFldLabel
1414	}
1415	}
1416	# May be a space in the axis label.
1417	SendCmd [list axis name z $label]
1418
1419	if { [$_first hints zunits] == "" } {
1420	set units [lindex $_fields($_curFldName) 1]
1421	} else {
1422	set units [$_first hints zunits]
1423	}
1424	if { $units != "" } {
1425	# May be a space in the axis units.
1426	SendCmd [list axis units z $units]
1427	}
1428	# Get the new limits because the field changed.
1429	ResetAxes
1430	SendCmd "dataset scalar $_curFldName"
1431	SendCmd "heightmap colormode scalar $_curFldName"
1432	SendCmd "camera reset"
1433	DrawLegend
1434	}
1435	"heightmapScale" {
1436	if { $_settings(isHeightmap) } {
1437	set scale [GetHeightmapScale]
1438	foreach dataset [CurrentDatasets -all] {
1439	SendCmd "heightmap heightscale $scale $dataset"
1440	set _comp2scale($dataset) $scale
1441	}
1442	ResetAxes
1443	}
1444	}
1445	"isHeightmap" {
1446	set bool $_settings(isHeightmap)
1447	set c $itk_component(view)
1448	StartBufferingCommands
1449	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1450	if { $bool } {
1451	set _settings(heightmapScale) 50
1452	set _settings(opacity) $_settings(saveOpacity)
1453	set _settings(lighting) $_settings(saveLighting)
1454	} else {
1455	set _settings(heightmapScale) 0
1456	set _settings(lighting) 0
1457	set _settings(opacity) 100
1458	}
1459	AdjustSetting lighting
1460	AdjustSetting opacity
1461	set scale [GetHeightmapScale]
1462	foreach dataset [CurrentDatasets -all] {
1463	SendCmd "heightmap heightscale $scale $dataset"
1464	set _comp2scale($dataset) $scale
1465	}
1466	if { $bool } {
1467	$itk_component(lighting) configure -state normal
1468	$itk_component(opacity) configure -state normal
1469	$itk_component(scale) configure -state normal
1470	$itk_component(opacity_l) configure -state normal
1471	$itk_component(scale_l) configure -state normal
1472	if {$_view(ortho)} {
1473	SendCmd "camera mode ortho"
1474	} else {
1475	SendCmd "camera mode persp"
1476	}
1477	} else {
1478	$itk_component(lighting) configure -state disabled
1479	$itk_component(opacity) configure -state disabled
1480	$itk_component(scale) configure -state disabled
1481	$itk_component(opacity_l) configure -state disabled
1482	$itk_component(scale_l) configure -state disabled
1483	SendCmd "camera mode image"
1484	}
1485	if {$_settings(stretchToFit)} {
1486	if {$scale == 0} {
1487	SendCmd "camera aspect window"
1488	} else {
1489	SendCmd "camera aspect square"
1490	}
1491	}
1492	ResetAxes
1493	SendCmd "camera reset"
1494	if { $bool } {
1495	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1496	$_arcball quaternion $q
1497	SendCmd "camera orient $q"
1498	} else {
1499	bind $c <ButtonPress-1> {}
1500	bind $c <B1-Motion> {}
1501	bind $c <ButtonRelease-1> {}
1502	}
1503	# Fix the mouse bindings for rotation/panning and the
1504	# camera mode. Ideally we'd create a bindtag for these.
1505	if { $bool } {
1506	# Bindings for rotation via mouse
1507	bind $c <ButtonPress-1> \
1508	[itcl::code $this Rotate click %x %y]
1509	bind $c <B1-Motion> \
1510	[itcl::code $this Rotate drag %x %y]
1511	bind $c <ButtonRelease-1> \
1512	[itcl::code $this Rotate release %x %y]
1513	}
1514	StopBufferingCommands
1515	}
1516	"isolineColor" {
1517	set color [$itk_component(isolinecolor) value]
1518	if { $color == "none" } {
1519	if { $_settings(isolinesVisible) } {
1520	SendCmd "heightmap isolines 0"
1521	set _settings(isolinesVisible) 0
1522	}
1523	} else {
1524	if { !$_settings(isolinesVisible) } {
1525	SendCmd "heightmap isolines 1"
1526	set _settings(isolinesVisible) 1
1527	}
1528	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1529	}
1530	DrawLegend
1531	}
1532	"isolinesVisible" {
1533	set bool $_settings($what)
1534	SendCmd "heightmap isolines $bool"
1535	DrawLegend
1536	}
1537	"legendVisible" {
1538	if { !$_settings($what) } {
1539	$itk_component(view) delete legend
1540	}
1541	DrawLegend
1542	}
1543	"lighting" {
1544	if { $_settings(isHeightmap) } {
1545	set _settings(saveLighting) $_settings(lighting)
1546	set bool $_settings($what)
1547	SendCmd "heightmap lighting $bool"
1548	} else {
1549	SendCmd "heightmap lighting 0"
1550	}
1551	}
1552	"numIsolines" {
1553	set _changed(numIsolines) 1
1554	set _settings(numIsolines) [$itk_component(numisolines) value]
1555	set _currentNumIsolines $_settings(numIsolines)
1556	SendCmd "heightmap numcontours $_settings(numIsolines)"
1557	if {$_settings(colormapDiscrete)} {
1558	set numColors [expr $_settings(numIsolines) - 1]
1559	SendCmd "colormap res $numColors"
1560	EventuallyRequestLegend
1561	} else {
1562	DrawLegend
1563	}
1564	}
1565	"opacity" {
1566	set _changed(opacity) 1
1567	if { $_settings(isHeightmap) } {
1568	set _settings(saveOpacity) $_settings(opacity)
1569	set val $_settings(opacity)
1570	set sval [expr { 0.01 * double($val) }]
1571	SendCmd "heightmap opacity $sval"
1572	} else {
1573	SendCmd "heightmap opacity 1"
1574	}
1575	}
1576	"outline" {
1577	set bool $_settings($what)
1578	SendCmd "dataset outline $bool"
1579	}
1580	"stretchToFit" {
1581	set bool $_settings($what)
1582	if { $bool } {
1583	set heightScale [GetHeightmapScale]
1584	if {$heightScale == 0} {
1585	SendCmd "camera aspect window"
1586	} else {
1587	SendCmd "camera aspect square"
1588	}
1589	} else {
1590	SendCmd "camera aspect native"
1591	}
1592	}
1593	"wireframe" {
1594	set bool $_settings($what)
1595	SendCmd "heightmap wireframe $bool"
1596	}
1597	default {
1598	error "don't know how to fix $what"
1599	}
1600	}
1601	}
1602
1603	#
1604	# RequestLegend --
1605	#
1606	# Request a new legend from the server. The size of the legend
1607	# is determined from the height of the canvas.
1608	#
1609	# This should be called when
1610	# 1. A new current colormap is set.
1611	# 2. Window is resized.
1612	# 3. The limits of the data have changed. (Just need a redraw).
1613	# 4. Number of isolines have changed. (Just need a redraw).
1614	# 5. Legend becomes visible (Just need a redraw).
1615	#
1616	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1617	set _legendPending 0
1618	set font "Arial 8"
1619	set w 12
1620	set lineht [font metrics $font -linespace]
1621	# color ramp height = (canvas height) - (min and max value lines) - 2
1622	set h [expr {$_height - 2 * ($lineht + 2)}]
1623	set _legendHeight $h
1624
1625	set fname $_curFldName
1626	if { [string match "component*" $fname] } {
1627	set title ""
1628	} else {
1629	if { [info exists _fields($fname)] } {
1630	foreach { title units } $_fields($fname) break
1631	if { $units != "" } {
1632	set title [format "%s (%s)" $title $units]
1633	}
1634	} else {
1635	set title $fname
1636	}
1637	}
1638	# If there's a title too, substract one more line
1639	if { $title != "" } {
1640	incr h -$lineht
1641	}
1642	if { $h < 1} {
1643	return
1644	}
1645	# Set the legend on the first heightmap dataset.
1646	if { $_currentColormap != "" } {
1647	set cmap $_currentColormap
1648	SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1649	#SendCmd "heightmap colormode scalar $_curFldName"
1650	#SendCmd "dataset scalar $_curFldName"
1651	}
1652	}
1653
1654	#
1655	# ResetAxes --
1656	#
1657	# Set axis z bounds and range
1658	#
1659	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1660	if { ![info exists _limits($_curFldName)]} {
1661	SendCmd "dataset maprange all"
1662	SendCmd "axis autorange z on"
1663	SendCmd "axis autobounds z on"
1664	return
1665	}
1666	foreach { xmin xmax } $_limits(x) break
1667	foreach { ymin ymax } $_limits(y) break
1668	foreach { vmin vmax } $_limits($_curFldName) break
1669
1670	global tcl_precision
1671	set tcl_precision 17
1672	set xr [expr $xmax - $xmin]
1673	set yr [expr $ymax - $ymin]
1674	set vr [expr $vmax - $vmin]
1675	set r [expr ($yr > $xr) ? $yr : $xr]
1676	if { $vr < 1.0e-17 } {
1677	set dataScale 1.0
1678	} else {
1679	set dataScale [expr $r / $vr]
1680	}
1681	set heightScale [GetHeightmapScale]
1682	set bmin [expr $heightScale * $dataScale * $vmin]
1683	set bmax [expr $heightScale * $dataScale * $vmax]
1684	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1685	SendCmd "axis bounds z $bmin $bmax"
1686	SendCmd "axis range z $_limits($_curFldName)"
1687	}
1688
1689	#
1690	# SetCurrentColormap --
1691	#
1692	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1693	# Keep track of the colormaps that we build.
1694	if { ![info exists _colormaps($name)] } {
1695	BuildColormap $name
1696	set _colormaps($name) 1
1697	}
1698	set _currentColormap $name
1699	SendCmd "heightmap colormap $_currentColormap"
1700	}
1701
1702
1703	#
1704	# BuildColormap --
1705	#
1706	# Build the designated colormap on the server.
1707	#
1708	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1709	set cmap [ColorsToColormap $name]
1710	if { [llength $cmap] == 0 } {
1711	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1712	}
1713	set wmap "0.0 1.0 1.0 1.0"
1714	SendCmd "colormap add $name { $cmap } { $wmap }"
1715	}
1716
1717	# ----------------------------------------------------------------------
1718	# CONFIGURATION OPTION: -mode
1719	# ----------------------------------------------------------------------
1720	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1721	switch -- $itk_option(-mode) {
1722	"heightmap" {
1723	set _settings(isHeightmap) 1
1724	}
1725	"contour" {
1726	set _settings(isHeightmap) 0
1727	}
1728	default {
1729	error "unknown mode settings \"$itk_option(-mode)\""
1730	}
1731	}
1732	AdjustSetting isHeightmap
1733	}
1734
1735	# ----------------------------------------------------------------------
1736	# CONFIGURATION OPTION: -plotbackground
1737	# ----------------------------------------------------------------------
1738	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1739	if { [isconnected] } {
1740	set rgb [Color2RGB $itk_option(-plotbackground)]
1741	SendCmd "screen bgcolor $rgb"
1742	$itk_component(view) configure -background $itk_option(-plotbackground)
1743	}
1744	}
1745
1746	# ----------------------------------------------------------------------
1747	# CONFIGURATION OPTION: -plotforeground
1748	# ----------------------------------------------------------------------
1749	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1750	if { [isconnected] } {
1751	set rgb [Color2RGB $itk_option(-plotforeground)]
1752	SendCmd "dataset color $rgb"
1753	SendCmd "axis color all $rgb"
1754	}
1755	}
1756
1757	itcl::body Rappture::VtkHeightmapViewer::limits3 { dataobj } {
1758	lappend limits x [$dataobj limits x]
1759	lappend limits y [$dataobj limits y]
1760	if { [catch { $dataobj limits $_curFldName } vlim] != 0 } {
1761	set vlim [$dataobj limits v]
1762	}
1763	lappend limits v $vlim
1764	return $limits
1765	}
1766
1767	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1768
1769	set fg [option get $itk_component(hull) font Font]
1770	#set bfg [option get $itk_component(hull) boldFont Font]
1771
1772	set inner [$itk_component(main) insert end \
1773	-title "Contour/Surface Settings" \
1774	-icon [Rappture::icon contour2]]
1775	$inner configure -borderwidth 4
1776
1777	checkbutton $inner.legend \
1778	-text "Legend" \
1779	-variable [itcl::scope _settings(legendVisible)] \
1780	-command [itcl::code $this AdjustSetting legendVisible] \
1781	-font "Arial 9"
1782
1783	checkbutton $inner.wireframe \
1784	-text "Wireframe" \
1785	-variable [itcl::scope _settings(wireframe)] \
1786	-command [itcl::code $this AdjustSetting wireframe] \
1787	-font "Arial 9"
1788
1789	itk_component add lighting {
1790	checkbutton $inner.lighting \
1791	-text "Enable Lighting" \
1792	-variable [itcl::scope _settings(lighting)] \
1793	-command [itcl::code $this AdjustSetting lighting] \
1794	-font "Arial 9"
1795	} {
1796	ignore -font
1797	}
1798	checkbutton $inner.edges \
1799	-text "Edges" \
1800	-variable [itcl::scope _settings(edges)] \
1801	-command [itcl::code $this AdjustSetting edges] \
1802	-font "Arial 9"
1803
1804	checkbutton $inner.outline \
1805	-text "Outline" \
1806	-variable [itcl::scope _settings(outline)] \
1807	-command [itcl::code $this AdjustSetting outline] \
1808	-font "Arial 9"
1809
1810	checkbutton $inner.stretch \
1811	-text "Stretch to fit" \
1812	-variable [itcl::scope _settings(stretchToFit)] \
1813	-command [itcl::code $this AdjustSetting stretchToFit] \
1814	-font "Arial 9"
1815
1816	checkbutton $inner.isolines \
1817	-text "Isolines" \
1818	-variable [itcl::scope _settings(isolinesVisible)] \
1819	-command [itcl::code $this AdjustSetting isolinesVisible] \
1820	-font "Arial 9"
1821
1822	checkbutton $inner.colormapDiscrete \
1823	-text "Discrete Colormap" \
1824	-variable [itcl::scope _settings(colormapDiscrete)] \
1825	-command [itcl::code $this AdjustSetting colormapDiscrete] \
1826	-font "Arial 9"
1827
1828	itk_component add field_l {
1829	label $inner.field_l -text "Field" -font "Arial 9"
1830	} {
1831	ignore -font
1832	}
1833	itk_component add field {
1834	Rappture::Combobox $inner.field -width 10 -editable no
1835	}
1836	bind $inner.field <<Value>> \
1837	[itcl::code $this AdjustSetting field]
1838
1839	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1840	itk_component add colormap {
1841	Rappture::Combobox $inner.colormap -width 10 -editable no
1842	}
1843	$inner.colormap choices insert end \
1844	"BCGYR" "BCGYR" \
1845	"BGYOR" "BGYOR" \
1846	"blue" "blue" \
1847	"blue-to-brown" "blue-to-brown" \
1848	"blue-to-orange" "blue-to-orange" \
1849	"blue-to-grey" "blue-to-grey" \
1850	"green-to-magenta" "green-to-magenta" \
1851	"greyscale" "greyscale" \
1852	"nanohub" "nanohub" \
1853	"rainbow" "rainbow" \
1854	"spectral" "spectral" \
1855	"ROYGB" "ROYGB" \
1856	"RYGCB" "RYGCB" \
1857	"brown-to-blue" "brown-to-blue" \
1858	"grey-to-blue" "grey-to-blue" \
1859	"orange-to-blue" "orange-to-blue" \
1860	"none" "none"
1861
1862	$itk_component(colormap) value "BCGYR"
1863	bind $inner.colormap <<Value>> \
1864	[itcl::code $this AdjustSetting colormap]
1865
1866	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1867	itk_component add isolinecolor {
1868	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1869	}
1870	$inner.isolinecolor choices insert end \
1871	"black" "black" \
1872	"blue" "blue" \
1873	"cyan" "cyan" \
1874	"green" "green" \
1875	"grey" "grey" \
1876	"magenta" "magenta" \
1877	"orange" "orange" \
1878	"red" "red" \
1879	"white" "white" \
1880	"none" "none"
1881
1882	$itk_component(isolinecolor) value "black"
1883	bind $inner.isolinecolor <<Value>> \
1884	[itcl::code $this AdjustSetting isolineColor]
1885
1886	label $inner.background_l -text "Background Color" -font "Arial 9"
1887	itk_component add background {
1888	Rappture::Combobox $inner.background -width 10 -editable no
1889	}
1890	$inner.background choices insert end \
1891	"black" "black" \
1892	"white" "white" \
1893	"grey" "grey"
1894
1895	$itk_component(background) value "white"
1896	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1897
1898	itk_component add opacity_l {
1899	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1900	} {
1901	ignore -font
1902	}
1903	itk_component add opacity {
1904	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1905	-variable [itcl::scope _settings(opacity)] \
1906	-showvalue off \
1907	-command [itcl::code $this AdjustSetting opacity]
1908	}
1909	itk_component add scale_l {
1910	label $inner.scale_l -text "Scale" -font "Arial 9"
1911	} {
1912	ignore -font
1913	}
1914	itk_component add scale {
1915	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1916	-variable [itcl::scope _settings(heightmapScale)] \
1917	-showvalue off \
1918	-command [itcl::code $this AdjustSetting heightmapScale]
1919	}
1920	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1921	itk_component add numisolines {
1922	Rappture::Spinint $inner.numisolines \
1923	-min 2 -max 50 -font "arial 9"
1924	}
1925	$itk_component(numisolines) value $_settings(numIsolines)
1926	bind $itk_component(numisolines) <<Value>> \
1927	[itcl::code $this AdjustSetting numIsolines]
1928
1929	frame $inner.separator -height 2 -relief sunken -bd 1
1930	blt::table $inner \
1931	0,0 $inner.field_l -anchor w -pady 2 \
1932	0,1 $inner.field -anchor w -pady 2 -fill x \
1933	1,0 $inner.colormap_l -anchor w -pady 2 \
1934	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1935	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
1936	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
1937	3,0 $inner.background_l -anchor w -pady 2 \
1938	3,1 $inner.background -anchor w -pady 2 -fill x \
1939	4,0 $inner.numisolines_l -anchor w -pady 2 \
1940	4,1 $inner.numisolines -anchor w -pady 2 \
1941	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
1942	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1943	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1944	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
1945	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
1946	10,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1947	11,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
1948	12,0 $inner.separator -padx 2 -fill x -cspan 2 \
1949	13,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1950	14,0 $inner.opacity_l -anchor w -pady 2 \
1951	14,1 $inner.opacity -fill x -pady 2 \
1952	15,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
1953	15,1 $inner.scale -fill x -pady 2 -cspan 2 \
1954
1955	blt::table configure $inner r* c* -resize none
1956	blt::table configure $inner r16 c1 -resize expand
1957	}
1958
1959	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
1960
1961	set fg [option get $itk_component(hull) font Font]
1962	#set bfg [option get $itk_component(hull) boldFont Font]
1963
1964	set inner [$itk_component(main) insert end \
1965	-title "Axis Settings" \
1966	-icon [Rappture::icon axis2]]
1967	$inner configure -borderwidth 4
1968
1969	checkbutton $inner.visible \
1970	-text "Axes" \
1971	-variable [itcl::scope _settings(axisVisible)] \
1972	-command [itcl::code $this AdjustSetting axisVisible] \
1973	-font "Arial 9"
1974	checkbutton $inner.labels \
1975	-text "Axis Labels" \
1976	-variable [itcl::scope _settings(axisLabels)] \
1977	-command [itcl::code $this AdjustSetting axisLabels] \
1978	-font "Arial 9"
1979	label $inner.grid_l -text "Grid" -font "Arial 9"
1980	checkbutton $inner.xgrid \
1981	-text "X" \
1982	-variable [itcl::scope _settings(axisXGrid)] \
1983	-command [itcl::code $this AdjustSetting axisXGrid] \
1984	-font "Arial 9"
1985	checkbutton $inner.ygrid \
1986	-text "Y" \
1987	-variable [itcl::scope _settings(axisYGrid)] \
1988	-command [itcl::code $this AdjustSetting axisYGrid] \
1989	-font "Arial 9"
1990	checkbutton $inner.zgrid \
1991	-text "Z" \
1992	-variable [itcl::scope _settings(axisZGrid)] \
1993	-command [itcl::code $this AdjustSetting axisZGrid] \
1994	-font "Arial 9"
1995	checkbutton $inner.minorticks \
1996	-text "Minor Ticks" \
1997	-variable [itcl::scope _settings(axisMinorTicks)] \
1998	-command [itcl::code $this AdjustSetting axisMinorTicks] \
1999	-font "Arial 9"
2000
2001
2002	label $inner.mode_l -text "Mode" -font "Arial 9"
2003
2004	itk_component add axisflymode {
2005	Rappture::Combobox $inner.mode -width 10 -editable no
2006	}
2007	$inner.mode choices insert end \
2008	"static_triad" "static" \
2009	"closest_triad" "closest" \
2010	"furthest_triad" "furthest" \
2011	"outer_edges" "outer"
2012	$itk_component(axisflymode) value "static"
2013	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlymode]
2014
2015	blt::table $inner \
2016	0,0 $inner.visible -anchor w -cspan 4 \
2017	1,0 $inner.labels -anchor w -cspan 4 \
2018	2,0 $inner.minorticks -anchor w -cspan 4 \
2019	4,0 $inner.grid_l -anchor w \
2020	4,1 $inner.xgrid -anchor w \
2021	4,2 $inner.ygrid -anchor w \
2022	4,3 $inner.zgrid -anchor w \
2023	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2024	5,1 $inner.mode -fill x -cspan 3
2025
2026	blt::table configure $inner r* c* -resize none
2027	blt::table configure $inner r7 c6 -resize expand
2028	blt::table configure $inner r3 -height 0.125i
2029	}
2030
2031
2032	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2033	set inner [$itk_component(main) insert end \
2034	-title "Camera Settings" \
2035	-icon [Rappture::icon camera]]
2036	$inner configure -borderwidth 4
2037
2038	label $inner.view_l -text "view" -font "Arial 9"
2039	set f [frame $inner.view]
2040	foreach side { front back left right top bottom } {
2041	button $f.$side -image [Rappture::icon view$side] \
2042	-command [itcl::code $this SetOrientation $side]
2043	Rappture::Tooltip::for $f.$side "Change the view to $side"
2044	pack $f.$side -side left
2045	}
2046
2047	blt::table $inner \
2048	0,0 $inner.view_l -anchor e -pady 2 \
2049	0,1 $inner.view -anchor w -pady 2
2050
2051	set labels { qx qy qz qw xpan ypan zoom }
2052	set row 1
2053	foreach tag $labels {
2054	label $inner.${tag}label -text $tag -font "Arial 9"
2055	entry $inner.${tag} -font "Arial 9" -bg white \
2056	-textvariable [itcl::scope _view($tag)]
2057	bind $inner.${tag} <Return> \
2058	[itcl::code $this camera set ${tag}]
2059	bind $inner.${tag} <KP_Enter> \
2060	[itcl::code $this camera set ${tag}]
2061	blt::table $inner \
2062	$row,0 $inner.${tag}label -anchor e -pady 2 \
2063	$row,1 $inner.${tag} -anchor w -pady 2
2064	blt::table configure $inner r$row -resize none
2065	incr row
2066	}
2067	checkbutton $inner.ortho \
2068	-text "Orthographic Projection" \
2069	-variable [itcl::scope _view(ortho)] \
2070	-command [itcl::code $this camera set ortho] \
2071	-font "Arial 9"
2072	blt::table $inner \
2073	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2074	blt::table configure $inner r$row -resize none
2075	incr row
2076
2077	blt::table configure $inner c* r* -resize none
2078	blt::table configure $inner c2 -resize expand
2079	blt::table configure $inner r$row -resize expand
2080	}
2081
2082	#
2083	# camera --
2084	#
2085	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2086	switch -- $option {
2087	"show" {
2088	puts [array get _view]
2089	}
2090	"set" {
2091	set who [lindex $args 0]
2092	set x $_view($who)
2093	set code [catch { string is double $x } result]
2094	if { $code != 0 \|\| !$result } {
2095	return
2096	}
2097	switch -- $who {
2098	"ortho" {
2099	if {$_view(ortho)} {
2100	SendCmd "camera mode ortho"
2101	} else {
2102	SendCmd "camera mode persp"
2103	}
2104	}
2105	"xpan" - "ypan" {
2106	PanCamera
2107	}
2108	"qx" - "qy" - "qz" - "qw" {
2109	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2110	$_arcball quaternion $q
2111	EventuallyRotate $q
2112	}
2113	"zoom" {
2114	SendCmd "camera zoom $_view(zoom)"
2115	}
2116	}
2117	}
2118	}
2119	}
2120
2121	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2122	set bytes ""
2123	foreach dataobj [get] {
2124	foreach comp [$dataobj components] {
2125	set tag $dataobj-$comp
2126	#set contents [ConvertToVtkData $dataobj $comp]
2127	set contents [$dataobj vtkdata $comp]
2128	append bytes "$contents\n\n"
2129	}
2130	}
2131	return [list .vtk $bytes]
2132	}
2133
2134	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2135	if { [image width $_image(download)] > 0 &&
2136	[image height $_image(download)] > 0 } {
2137	set bytes [$_image(download) data -format "jpeg -quality 100"]
2138	set bytes [Rappture::encoding::decode -as b64 $bytes]
2139	return [list .jpg $bytes]
2140	}
2141	return ""
2142	}
2143
2144	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2145	Rappture::Balloon $popup \
2146	-title "[Rappture::filexfer::label downloadWord] as..."
2147	set inner [$popup component inner]
2148	label $inner.summary -text "" -anchor w
2149	radiobutton $inner.vtk_button -text "VTK data file" \
2150	-variable [itcl::scope _downloadPopup(format)] \
2151	-font "Arial 9 " \
2152	-value vtk
2153	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2154	radiobutton $inner.image_button -text "Image File" \
2155	-variable [itcl::scope _downloadPopup(format)] \
2156	-font "Arial 9 " \
2157	-value image
2158	Rappture::Tooltip::for $inner.image_button \
2159	"Save as digital image."
2160
2161	button $inner.ok -text "Save" \
2162	-highlightthickness 0 -pady 2 -padx 3 \
2163	-command $command \
2164	-compound left \
2165	-image [Rappture::icon download]
2166
2167	button $inner.cancel -text "Cancel" \
2168	-highlightthickness 0 -pady 2 -padx 3 \
2169	-command [list $popup deactivate] \
2170	-compound left \
2171	-image [Rappture::icon cancel]
2172
2173	blt::table $inner \
2174	0,0 $inner.summary -cspan 2 \
2175	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2176	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2177	4,1 $inner.cancel -width .9i -fill y \
2178	4,0 $inner.ok -padx 2 -width .9i -fill y
2179	blt::table configure $inner r3 -height 4
2180	blt::table configure $inner r4 -pady 4
2181	raise $inner.image_button
2182	$inner.vtk_button invoke
2183	return $inner
2184	}
2185
2186	#
2187	# SetObjectStyle --
2188	#
2189	# Set the style of the heightmap/contour object. This gets calls
2190	# for each dataset once as it is loaded. It can overridden by
2191	# the user controls.
2192	#
2193	#
2194	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2195	# Parse style string.
2196	set tag $dataobj-$comp
2197	array set style {
2198	-color BCGYR
2199	-opacity 100
2200	-levels 10
2201	}
2202	set stylelist [$dataobj style $comp]
2203	if { $stylelist != "" } {
2204	array set style $stylelist
2205	}
2206	# This is too complicated. We want to set the colormap, number of
2207	# isolines and opacity for the dataset. They can be the default values,
2208	# the style hints loaded with the dataset, or set by user controls. As
2209	# datasets get loaded, they first use the defaults that are overidden
2210	# by the style hints. If the user changes the global controls, then that
2211	# overrides everything else. I don't know what it means when global
2212	# controls are specified as style hints by each dataset. It complicates
2213	# the code to handle aberrant cases.
2214
2215	if { $_changed(opacity) } {
2216	set style(-opacity) $_settings(opacity)
2217	}
2218	if { $_changed(numIsolines) } {
2219	set style(-levels) $_settings(numIsolines)
2220	}
2221	if { $_changed(colormap) } {
2222	set style(-color) $_settings(colormap)
2223	}
2224	if { $_currentColormap == "" } {
2225	$itk_component(colormap) value $style(-color)
2226	}
2227	set _currentOpacity $style(-opacity)
2228	if { $_currentNumIsolines != $style(-levels) } {
2229	set _currentNumIsolines $style(-levels)
2230	set _settings(numIsolines) $_currentNumIsolines
2231	$itk_component(numisolines) value $_currentNumIsolines
2232	DrawLegend
2233	}
2234	SendCmd "dataset outline $_settings(outline) $tag"
2235	SendCmd "dataset color [Color2RGB $itk_option(-plotforeground)] $tag"
2236	set scale [GetHeightmapScale]
2237	SendCmd "heightmap add numcontours $_currentNumIsolines $scale $tag"
2238	set _comp2scale($tag) $_settings(heightmapScale)
2239	SendCmd "heightmap edges $_settings(edges) $tag"
2240	SendCmd "heightmap wireframe $_settings(wireframe) $tag"
2241	SetCurrentColormap $style(-color)
2242	set color [$itk_component(isolinecolor) value]
2243	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2244	SendCmd "heightmap lighting $_settings(isHeightmap) $tag"
2245	}
2246
2247	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2248	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2249	return 0
2250	}
2251	return 1
2252	}
2253
2254	# ----------------------------------------------------------------------
2255	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2256	#
2257	# Invoked automatically whenever the "legend" command comes in from
2258	# the rendering server. Indicates that binary image data with the
2259	# specified <size> will follow.
2260	# ----------------------------------------------------------------------
2261	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2262	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2263	if { [isconnected] } {
2264	set bytes [ReceiveBytes $size]
2265	if { ![info exists _image(legend)] } {
2266	set _image(legend) [image create photo]
2267	}
2268	$_image(legend) configure -data $bytes
2269	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2270	if { [catch {DrawLegend} errs] != 0 } {
2271	global errorInfo
2272	puts stderr "errs=$errs errorInfo=$errorInfo"
2273	}
2274	}
2275	}
2276
2277	#
2278	# DrawLegend --
2279	#
2280	# Draws the legend in the own canvas on the right side of the plot area.
2281	#
2282	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2283	set fname $_curFldName
2284	set c $itk_component(view)
2285	set w [winfo width $c]
2286	set h [winfo height $c]
2287	set font "Arial 8"
2288	set lineht [font metrics $font -linespace]
2289
2290	if { [string match "component*" $fname] } {
2291	set title ""
2292	} else {
2293	if { [info exists _fields($fname)] } {
2294	foreach { title units } $_fields($fname) break
2295	if { $units != "" } {
2296	set title [format "%s (%s)" $title $units]
2297	}
2298	} else {
2299	set title $fname
2300	}
2301	}
2302	set x [expr $w - 2]
2303	if { !$_settings(legendVisible) } {
2304	$c delete legend
2305	return
2306	}
2307	if { [$c find withtag "legend"] == "" } {
2308	set y 2
2309	# If there's a legend title, create a text item for the title.
2310	$c create text $x $y \
2311	-anchor ne \
2312	-fill $itk_option(-plotforeground) -tags "title legend" \
2313	-font $font
2314	incr y $lineht
2315	$c create text $x $y \
2316	-anchor ne \
2317	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2318	-font $font
2319	incr y $lineht
2320	$c create image $x $y \
2321	-anchor ne \
2322	-image $_image(legend) -tags "colormap legend"
2323	$c create rectangle $x $y 1 1 \
2324	-fill "" -outline "" -tags "sensor legend"
2325	$c create text $x [expr {$h-2}] \
2326	-anchor se \
2327	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2328	-font $font
2329	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2330	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2331	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2332	}
2333	$c delete isoline
2334	set x2 $x
2335	set iw [image width $_image(legend)]
2336	set ih [image height $_image(legend)]
2337	set x1 [expr $x2 - ($iw*12)/10]
2338	set color [$itk_component(isolinecolor) value]
2339
2340	# Draw the isolines on the legend.
2341	if { $color != "none" && [info exists _limits($_curFldName)] &&
2342	$_settings(isolinesVisible) && $_currentNumIsolines > 0 } {
2343	set pixels [blt::vector create \#auto]
2344	set values [blt::vector create \#auto]
2345	set range [image height $_image(legend)]
2346	# Order of pixels is max to min (max is at top of legend).
2347	$pixels seq $ih 0 $_currentNumIsolines
2348
2349	set offset [expr 2 + $lineht]
2350	# If there's a legend title, increase the offset by the line height.
2351	if { $title != "" } {
2352	incr offset $lineht
2353	}
2354	$pixels expr {round($pixels + $offset)}
2355	# Order of values is min to max.
2356	foreach { vmin vmax } $_limits($_curFldName) break
2357	$values seq $vmin $vmax $_currentNumIsolines
2358	set tags "isoline legend"
2359	array unset _isolines
2360	foreach pos [$pixels range 0 end] value [$values range end 0] {
2361	set y1 [expr int($pos)]
2362	for { set off 0 } { $off < 3 } { incr off } {
2363	set _isolines([expr $y1 + $off]) $value
2364	set _isolines([expr $y1 - $off]) $value
2365	}
2366	set id [$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags]
2367	}
2368	blt::vector destroy $pixels $values
2369	}
2370
2371	$c bind title <ButtonPress> [itcl::code $this Combo post]
2372	$c bind title <Enter> [itcl::code $this Combo activate]
2373	$c bind title <Leave> [itcl::code $this Combo deactivate]
2374	# Reset the item coordinates according the current size of the plot.
2375	if { [info exists _limits($_curFldName)] } {
2376	foreach { vmin vmax } $_limits($_curFldName) break
2377	$c itemconfigure vmin -text [format %g $vmin]
2378	$c itemconfigure vmax -text [format %g $vmax]
2379	}
2380	set y 2
2381	# If there's a legend title, move the title to the correct position
2382	if { $title != "" } {
2383	$c itemconfigure title -text $title
2384	$c coords title $x $y
2385	incr y $lineht
2386	}
2387	$c coords vmax $x $y
2388	incr y $lineht
2389	$c coords colormap $x $y
2390	set ix [image width $_image(legend)]
2391	set ih [image height $_image(legend)]
2392	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2393	$c raise sensor
2394	$c coords vmin $x [expr {$h - 2}]
2395	}
2396
2397	#
2398	# EnterLegend --
2399	#
2400	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2401	SetLegendTip $x $y
2402	}
2403
2404	#
2405	# MotionLegend --
2406	#
2407	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2408	Rappture::Tooltip::tooltip cancel
2409	set c $itk_component(view)
2410	set cw [winfo width $c]
2411	set ch [winfo height $c]
2412	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2413	SetLegendTip $x $y
2414	}
2415	}
2416
2417	#
2418	# LeaveLegend --
2419	#
2420	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2421	Rappture::Tooltip::tooltip cancel
2422	.rappturetooltip configure -icon ""
2423	}
2424
2425	#
2426	# SetLegendTip --
2427	#
2428	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2429	set fname $_curFldName
2430	set c $itk_component(view)
2431	set w [winfo width $c]
2432	set h [winfo height $c]
2433	set font "Arial 8"
2434	set lineht [font metrics $font -linespace]
2435
2436	set ih [image height $_image(legend)]
2437	# Subtract off the offset of the color ramp from the top of the canvas
2438	set iy [expr $y - ($lineht + 2)]
2439
2440	if { [string match "component*" $fname] } {
2441	set title ""
2442	} else {
2443	if { [info exists _fields($fname)] } {
2444	foreach { title units } $_fields($fname) break
2445	if { $units != "" } {
2446	set title [format "%s (%s)" $title $units]
2447	}
2448	} else {
2449	set title $fname
2450	}
2451	}
2452	# If there's a legend title, increase the offset by the line height.
2453	if { $title != "" } {
2454	incr iy -$lineht
2455	}
2456
2457	# Make a swatch of the selected color
2458	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2459	return
2460	}
2461
2462	if { ![info exists _image(swatch)] } {
2463	set _image(swatch) [image create photo -width 24 -height 24]
2464	}
2465	set color [eval format "\#%02x%02x%02x" $pixel]
2466	$_image(swatch) put black -to 0 0 23 23
2467	$_image(swatch) put $color -to 1 1 22 22
2468
2469	# Compute the value of the point
2470	if { [info exists _limits($fname)] } {
2471	foreach { vmin vmax } $_limits($fname) break
2472	set t [expr 1.0 - (double($iy) / double($ih-1))]
2473	set value [expr $t * ($vmax - $vmin) + $vmin]
2474	} else {
2475	set value 0.0
2476	}
2477	set tipx [expr $x + 15]
2478	set tipy [expr $y - 5]
2479	.rappturetooltip configure -icon $_image(swatch)
2480	if { [info exists _isolines($y)] } {
2481	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2482	} else {
2483	Rappture::Tooltip::text $c [format "$title %g" $value]
2484	}
2485	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2486	}
2487
2488	# ----------------------------------------------------------------------
2489	# USAGE: _dropdown post
2490	# USAGE: _dropdown unpost
2491	# USAGE: _dropdown select
2492	#
2493	# Used internally to handle the dropdown list for this combobox. The
2494	# post/unpost options are invoked when the list is posted or unposted
2495	# to manage the relief of the controlling button. The select option
2496	# is invoked whenever there is a selection from the list, to assign
2497	# the value back to the gauge.
2498	# ----------------------------------------------------------------------
2499	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2500	set c $itk_component(view)
2501	switch -- $option {
2502	post {
2503	foreach { x1 y1 x2 y2 } [$c bbox title] break
2504	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2505	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2506	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2507	tk_popup $itk_component(fieldmenu) $x $y
2508	}
2509	activate {
2510	$c itemconfigure title -fill red
2511	}
2512	deactivate {
2513	$c itemconfigure title -fill $itk_option(-plotforeground)
2514	}
2515	invoke {
2516	$itk_component(field) value $_curFldLabel
2517	AdjustSetting field
2518	}
2519	default {
2520	error "bad option \"$option\": should be post, unpost, select"
2521	}
2522	}
2523	}
2524
2525	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2526	if { $_settings(isHeightmap) } {
2527	set val $_settings(heightmapScale)
2528	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2529	return $sval
2530	}
2531	set sval 0
2532	}
2533
2534	itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2535	array set positions {
2536	front "1 0 0 0"
2537	back "0 0 1 0"
2538	left "0.707107 0 -0.707107 0"
2539	right "0.707107 0 0.707107 0"
2540	top "0.707107 -0.707107 0 0"
2541	bottom "0.707107 0.707107 0 0"
2542	}
2543	foreach name { qw qx qy qz } value $positions($side) {
2544	set _view($name) $value
2545	}
2546	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2547	$_arcball quaternion $q
2548	SendCmd "camera orient $q"
2549	}
2550
2551
2552
2553

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