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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 3623

Last change on this file since 3623 was 3623, checked in by ldelgass, 11 years ago
Use contour list in heightmap viewer to remove min/max isolines.
File size: 86.3 KB

Line
1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkheightmapviewer - Vtk heightmap viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkHeightmapViewer.width 4i widgetDefault
19	option add VtkHeightmapViewercursor crosshair widgetDefault
20	option add *VtkHeightmapViewer.height 4i widgetDefault
21	option add *VtkHeightmapViewer.foreground black widgetDefault
22	option add *VtkHeightmapViewer.controlBackground gray widgetDefault
23	option add *VtkHeightmapViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkHeightmapViewer.plotBackground black widgetDefault
25	option add *VtkHeightmapViewer.plotForeground white widgetDefault
26	option add *VtkHeightmapViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkHeightmapViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkHeightmapViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkHeightmapViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40	itk_option define -mode mode Mode "contour"
41
42	constructor { hostlist args } {
43	Rappture::VisViewer::constructor $hostlist
44	} {
45	# defined below
46	}
47	destructor {
48	# defined below
49	}
50	public proc SetServerList { namelist } {
51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
52	}
53	public method add {dataobj {settings ""}}
54	public method camera {option args}
55	public method delete {args}
56	public method disconnect {}
57	public method download {option args}
58	public method get {args}
59	public method isconnected {}
60	public method limits3 { dataobj }
61	public method parameters {title args} {
62	# do nothing
63	}
64	public method scale {args}
65
66	protected method Connect {}
67	protected method CurrentDatasets {args}
68	protected method Disconnect {}
69	protected method DoResize {}
70	protected method DoRotate {}
71	protected method AdjustSetting {what {value ""}}
72	protected method AdjustMode {}
73	protected method InitSettings { args }
74	protected method Pan {option x y}
75	protected method Pick {x y}
76	protected method Rebuild {}
77	protected method ReceiveDataset { args }
78	protected method ReceiveImage { args }
79	protected method ReceiveLegend { colormap title min max size }
80	protected method Rotate {option x y}
81	protected method Zoom {option}
82
83	# The following methods are only used by this class.
84	private method BuildAxisTab {}
85	private method BuildCameraTab {}
86	private method BuildColormap { name }
87	private method BuildContourTab {}
88	private method BuildDownloadPopup { widget command }
89	private method Combo { option }
90	private method ConvertToVtkData { dataobj comp }
91	private method DrawLegend {}
92	private method EnterLegend { x y }
93	private method EventuallyRequestLegend {}
94	private method EventuallyResize { w h }
95	private method EventuallyRotate { q }
96	private method GetImage { args }
97	private method GetVtkData { args }
98	private method IsValidObject { dataobj }
99	private method LeaveLegend {}
100	private method MotionLegend { x y }
101	private method PanCamera {}
102	private method RequestLegend {}
103	private method SetCurrentColormap { color }
104	private method SetLegendTip { x y }
105	private method SetObjectStyle { dataobj comp }
106	private method GetHeightmapScale {}
107	private method ResetAxes {}
108	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
750	set w [winfo width $itk_component(view)]
751	set h [winfo height $itk_component(view)]
752	EventuallyResize $w $h
753	}
754	return $result
755	}
756
757	#
758	# isconnected --
759	#
760	# Indicates if we are currently connected to the visualization server.
761	#
762	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
763	return [VisViewer::IsConnected]
764	}
765
766	#
767	# disconnect --
768	#
769	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
770	Disconnect
771	set _reset 1
772	}
773
774	#
775	# Disconnect --
776	#
777	# Clients use this method to disconnect from the current rendering
778	# server.
779	#
780	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
781	VisViewer::Disconnect
782
783	$_dispatcher cancel !rebuild
784	$_dispatcher cancel !resize
785	$_dispatcher cancel !rotate
786	$_dispatcher cancel !legend
787	# disconnected -- no more data sitting on server
788	array unset _datasets
789	array unset _data
790	array unset _colormaps
791	array unset _obj2datasets
792	global readyForNextFrame
793	set readyForNextFrame 1
794	}
795
796	# ----------------------------------------------------------------------
797	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
798	#
799	# Invoked automatically whenever the "image" command comes in from
800	# the rendering server. Indicates that binary image data with the
801	# specified <size> will follow.
802	# ----------------------------------------------------------------------
803	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
804	global readyForNextFrame
805	set readyForNextFrame 1
806	array set info {
807	-token "???"
808	-bytes 0
809	-type image
810	}
811	array set info $args
812	set bytes [ReceiveBytes $info(-bytes)]
813	if { $info(-type) == "image" } {
814	if 0 {
815	set f [open "last.ppm" "w"]
816	puts $f $bytes
817	close $f
818	}
819	$_image(plot) configure -data $bytes
820	set time [clock seconds]
821	set date [clock format $time]
822	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
823	if { $_start > 0 } {
824	set finish [clock clicks -milliseconds]
825	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
826	set _start 0
827	}
828	} elseif { $info(type) == "print" } {
829	set tag $this-print-$info(-token)
830	set _hardcopy($tag) $bytes
831	}
832	}
833
834	#
835	# ReceiveDataset --
836	#
837	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
838	if { ![isconnected] } {
839	return
840	}
841	set option [lindex $args 0]
842	switch -- $option {
843	"scalar" {
844	set option [lindex $args 1]
845	switch -- $option {
846	"world" {
847	foreach { x y z value tag } [lrange $args 2 end] break
848	}
849	"pixel" {
850	foreach { x y value tag } [lrange $args 2 end] break
851	}
852	}
853	}
854	"vector" {
855	set option [lindex $args 1]
856	switch -- $option {
857	"world" {
858	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
859	}
860	"pixel" {
861	foreach { x y vx vy vz tag } [lrange $args 2 end] break
862	}
863	}
864	}
865	"names" {
866	foreach { name } [lindex $args 1] {
867	#puts stderr "Dataset: $name"
868	}
869	}
870	default {
871	error "unknown dataset option \"$option\" from server"
872	}
873	}
874	}
875
876	# ----------------------------------------------------------------------
877	# USAGE: Rebuild
878	#
879	# Called automatically whenever something changes that affects the
880	# data in the widget. Clears any existing data and rebuilds the
881	# widget to display new data.
882	# ----------------------------------------------------------------------
883	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
884	set w [winfo width $itk_component(view)]
885	set h [winfo height $itk_component(view)]
886	if { $w < 2 \|\| $h < 2 } {
887	$_dispatcher event -idle !rebuild
888	return
889	}
890
891	# Turn on buffering of commands to the server. We don't want to
892	# be preempted by a server disconnect/reconnect (which automatically
893	# generates a new call to Rebuild).
894	StartBufferingCommands
895
896	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
897	set _width $w
898	set _height $h
899	$_arcball resize $w $h
900	DoResize
901	if { $_settings(stretchToFit) } {
902	AdjustSetting stretchToFit
903	}
904	}
905	if { $_reset } {
906	#
907	# Reset the camera and other view parameters
908	#
909	InitSettings isHeightmap background
910
911	# Let's see how this goes. I think it's preferable to overloading the
912	# axis title with the exponent.
913	SendCmd "axis exp 0 0 0 1"
914
915	SendCmd "axis lrot z 90"
916	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
917	$_arcball quaternion $q
918	if {$_settings(isHeightmap) } {
919	if { $_view(ortho)} {
920	SendCmd "camera mode ortho"
921	} else {
922	SendCmd "camera mode persp"
923	}
924	DoRotate
925	SendCmd "camera reset"
926	}
927	PanCamera
928	StopBufferingCommands
929	SendCmd "imgflush"
930	StartBufferingCommands
931	}
932
933	set _first ""
934	# Start off with no datasets are visible.
935	SendCmd "dataset visible 0"
936	set scale [GetHeightmapScale]
937	foreach dataobj [get -objects] {
938	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
939	set _first $dataobj
940	}
941	set _obj2datasets($dataobj) ""
942	foreach comp [$dataobj components] {
943	set tag $dataobj-$comp
944	if { ![info exists _datasets($tag)] } {
945	set bytes [$dataobj vtkdata $comp]
946	if 0 {
947	set f [open /tmp/vtkheightmap.vtk "w"]
948	puts $f $bytes
949	close $f
950	}
951	set length [string length $bytes]
952	if { $_reportClientInfo } {
953	set info {}
954	lappend info "tool_id" [$dataobj hints toolId]
955	lappend info "tool_name" [$dataobj hints toolName]
956	lappend info "tool_version" [$dataobj hints toolRevision]
957	lappend info "tool_title" [$dataobj hints toolTitle]
958	lappend info "dataset_label" [$dataobj hints label]
959	lappend info "dataset_size" $length
960	lappend info "dataset_tag" $tag
961	SendCmd [list "clientinfo" $info]
962	}
963	SendCmd "dataset add $tag data follows $length"
964	append _outbuf $bytes
965	set _datasets($tag) 1
966	SetObjectStyle $dataobj $comp
967	}
968	lappend _obj2datasets($dataobj) $tag
969	if { [info exists _obj2ovride($dataobj-raise)] } {
970	# Setting dataset visible enables outline
971	# and heightmap
972	SendCmd "dataset visible 1 $tag"
973	}
974	if { ![info exists _comp2scale($tag)] \|\|
975	$_comp2scale($tag) != $scale } {
976	SendCmd "heightmap heightscale $scale $tag"
977	set _comp2scale($tag) $scale
978	}
979	}
980	}
981	if { $_first != "" } {
982	$itk_component(field) choices delete 0 end
983	$itk_component(fieldmenu) delete 0 end
984	array unset _fields
985	set _curFldName ""
986	foreach cname [$_first components] {
987	foreach fname [$_first fieldnames $cname] {
988	if { [info exists _fields($fname)] } {
989	continue
990	}
991	foreach { label units components } \
992	[$_first fieldinfo $fname] break
993	$itk_component(field) choices insert end "$fname" "$label"
994	$itk_component(fieldmenu) add radiobutton -label "$label" \
995	-value $label -variable [itcl::scope _curFldLabel] \
996	-selectcolor red \
997	-activebackground $itk_option(-plotbackground) \
998	-activeforeground $itk_option(-plotforeground) \
999	-font "Arial 8" \
1000	-command [itcl::code $this Combo invoke]
1001	set _fields($fname) [list $label $units $components]
1002	if { $_curFldName == "" } {
1003	set _curFldName $fname
1004	set _curFldLabel $label
1005	}
1006	}
1007	}
1008	$itk_component(field) value $_curFldLabel
1009	}
1010	InitSettings stretchToFit outline
1011
1012	if { $_reset } {
1013	SendCmd "axis tickpos outside"
1014	foreach axis { x y z } {
1015	SendCmd "axis lformat $axis %g"
1016	}
1017
1018	foreach axis { x y z } {
1019	set label [$_first hints ${axis}label]
1020	if { $label == "" } {
1021	if {$axis == "z"} {
1022	if { [string match "component*" $_curFldName] } {
1023	set label [string toupper $axis]
1024	} else {
1025	set label $_curFldLabel
1026	}
1027	} else {
1028	set label [string toupper $axis]
1029	}
1030	}
1031	# May be a space in the axis label.
1032	SendCmd [list axis name $axis $label]
1033
1034	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1035	set units [lindex $_fields($_curFldName) 1]
1036	} else {
1037	set units [$_first hints ${axis}units]
1038	}
1039	if { $units != "" } {
1040	# May be a space in the axis units.
1041	SendCmd [list axis units $axis $units]
1042	}
1043	}
1044	#
1045	# Reset the camera and other view parameters
1046	#
1047	ResetAxes
1048	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1049	$_arcball quaternion $q
1050	if {$_settings(isHeightmap) } {
1051	if { $_view(ortho)} {
1052	SendCmd "camera mode ortho"
1053	} else {
1054	SendCmd "camera mode persp"
1055	}
1056	DoRotate
1057	SendCmd "camera reset"
1058	}
1059	PanCamera
1060	InitSettings axisXGrid axisYGrid axisZGrid \
1061	axisVisible axisLabels heightmapScale field isHeightmap \
1062	numIsolines
1063	if { [array size _fields] < 2 } {
1064	blt::table forget $itk_component(field) $itk_component(field_l)
1065	}
1066	RequestLegend
1067	set _reset 0
1068	}
1069	global readyForNextFrame
1070	set readyForNextFrame 0; # Don't advance to the next frame
1071
1072	# Actually write the commands to the server socket. If it fails, we don't
1073	# care. We're finished here.
1074	blt::busy hold $itk_component(hull)
1075	StopBufferingCommands
1076	blt::busy release $itk_component(hull)
1077	}
1078
1079	# ----------------------------------------------------------------------
1080	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1081	#
1082	# Returns a list of server IDs for the current datasets being displayed. This
1083	# is normally a single ID, but it might be a list of IDs if the current data
1084	# object has multiple components.
1085	# ----------------------------------------------------------------------
1086	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1087	set flag [lindex $args 0]
1088	switch -- $flag {
1089	"-all" {
1090	if { [llength $args] > 1 } {
1091	error "CurrentDatasets: can't specify dataobj after \"-all\""
1092	}
1093	set dlist [get -objects]
1094	}
1095	"-visible" {
1096	if { [llength $args] > 1 } {
1097	set dlist {}
1098	set args [lrange $args 1 end]
1099	foreach dataobj $args {
1100	if { [info exists _obj2ovride($dataobj-raise)] } {
1101	lappend dlist $dataobj
1102	}
1103	}
1104	} else {
1105	set dlist [get -visible]
1106	}
1107	}
1108	default {
1109	set dlist $args
1110	}
1111	}
1112	set rlist ""
1113	foreach dataobj $dlist {
1114	foreach comp [$dataobj components] {
1115	set tag $dataobj-$comp
1116	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1117	lappend rlist $tag
1118	}
1119	}
1120	}
1121	return $rlist
1122	}
1123
1124	# ----------------------------------------------------------------------
1125	# USAGE: Zoom in
1126	# USAGE: Zoom out
1127	# USAGE: Zoom reset
1128	#
1129	# Called automatically when the user clicks on one of the zoom
1130	# controls for this widget. Changes the zoom for the current view.
1131	# ----------------------------------------------------------------------
1132	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1133	switch -- $option {
1134	"in" {
1135	set _view(zoom) [expr {$_view(zoom)*1.25}]
1136	SendCmd "camera zoom $_view(zoom)"
1137	}
1138	"out" {
1139	set _view(zoom) [expr {$_view(zoom)*0.8}]
1140	SendCmd "camera zoom $_view(zoom)"
1141	}
1142	"reset" {
1143	array set _view {
1144	qw 0.36
1145	qx 0.25
1146	qy 0.50
1147	qz 0.70
1148	zoom 1.0
1149	xpan 0
1150	ypan 0
1151	}
1152	if { $_first != "" } {
1153	set location [$_first hints camera]
1154	if { $location != "" } {
1155	array set _view $location
1156	}
1157	}
1158	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1159	$_arcball quaternion $q
1160	if {$_settings(isHeightmap) } {
1161	DoRotate
1162	}
1163	SendCmd "camera reset"
1164	}
1165	}
1166	}
1167
1168	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1169	set x $_view(xpan)
1170	set y $_view(ypan)
1171	SendCmd "camera pan $x $y"
1172	}
1173
1174
1175	# ----------------------------------------------------------------------
1176	# USAGE: Rotate click <x> <y>
1177	# USAGE: Rotate drag <x> <y>
1178	# USAGE: Rotate release <x> <y>
1179	#
1180	# Called automatically when the user clicks/drags/releases in the
1181	# plot area. Moves the plot according to the user's actions.
1182	# ----------------------------------------------------------------------
1183	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1184	switch -- $option {
1185	"click" {
1186	$itk_component(view) configure -cursor fleur
1187	set _click(x) $x
1188	set _click(y) $y
1189	}
1190	"drag" {
1191	if {[array size _click] == 0} {
1192	Rotate click $x $y
1193	} else {
1194	set w [winfo width $itk_component(view)]
1195	set h [winfo height $itk_component(view)]
1196	if {$w <= 0 \|\| $h <= 0} {
1197	return
1198	}
1199
1200	if {[catch {
1201	# this fails sometimes for no apparent reason
1202	set dx [expr {double($x-$_click(x))/$w}]
1203	set dy [expr {double($y-$_click(y))/$h}]
1204	}]} {
1205	return
1206	}
1207	if { $dx == 0 && $dy == 0 } {
1208	return
1209	}
1210	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1211	EventuallyRotate $q
1212	set _click(x) $x
1213	set _click(y) $y
1214	}
1215	}
1216	"release" {
1217	Rotate drag $x $y
1218	$itk_component(view) configure -cursor ""
1219	catch {unset _click}
1220	}
1221	default {
1222	error "bad option \"$option\": should be click, drag, release"
1223	}
1224	}
1225	}
1226
1227	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1228	foreach tag [CurrentDatasets -visible] {
1229	SendCmd "dataset getscalar pixel $x $y $tag"
1230	}
1231	}
1232
1233	# ----------------------------------------------------------------------
1234	# USAGE: $this Pan click x y
1235	# $this Pan drag x y
1236	# $this Pan release x y
1237	#
1238	# Called automatically when the user clicks on one of the zoom
1239	# controls for this widget. Changes the zoom for the current view.
1240	# ----------------------------------------------------------------------
1241	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1242	switch -- $option {
1243	"set" {
1244	set w [winfo width $itk_component(view)]
1245	set h [winfo height $itk_component(view)]
1246	set x [expr $x / double($w)]
1247	set y [expr $y / double($h)]
1248	set _view(xpan) [expr $_view(xpan) + $x]
1249	set _view(ypan) [expr $_view(ypan) + $y]
1250	PanCamera
1251	return
1252	}
1253	"click" {
1254	set _click(x) $x
1255	set _click(y) $y
1256	$itk_component(view) configure -cursor hand1
1257	}
1258	"drag" {
1259	if { ![info exists _click(x)] } {
1260	set _click(x) $x
1261	}
1262	if { ![info exists _click(y)] } {
1263	set _click(y) $y
1264	}
1265	set w [winfo width $itk_component(view)]
1266	set h [winfo height $itk_component(view)]
1267	set dx [expr ($_click(x) - $x)/double($w)]
1268	set dy [expr ($_click(y) - $y)/double($h)]
1269	set _click(x) $x
1270	set _click(y) $y
1271	set _view(xpan) [expr $_view(xpan) - $dx]
1272	set _view(ypan) [expr $_view(ypan) - $dy]
1273	PanCamera
1274	}
1275	"release" {
1276	Pan drag $x $y
1277	$itk_component(view) configure -cursor ""
1278	}
1279	default {
1280	error "unknown option \"$option\": should set, click, drag, or release"
1281	}
1282	}
1283	}
1284
1285	# ----------------------------------------------------------------------
1286	# USAGE: InitSettings <what> ?<value>?
1287	#
1288	# Used internally to update rendering settings whenever parameters
1289	# change in the popup settings panel. Sends the new settings off
1290	# to the back end.
1291	# ----------------------------------------------------------------------
1292	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1293	foreach spec $args {
1294	if { [info exists _settings($_first-$spec)] } {
1295	# Reset global setting with dataobj specific setting
1296	set _settings($spec) $_settings($_first-$spec)
1297	}
1298	AdjustSetting $spec
1299	}
1300	}
1301
1302	#
1303	# AdjustSetting --
1304	#
1305	# Changes/updates a specific setting in the widget. There are
1306	# usually user-setable option. Commands are sent to the render
1307	# server.
1308	#
1309	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1310	if { $_beforeConnect } {
1311	return
1312	}
1313	switch -- $what {
1314	"axisFlymode" {
1315	set mode [$itk_component(axisflymode) value]
1316	set mode [$itk_component(axisflymode) translate $mode]
1317	set _settings($what) $mode
1318	SendCmd "axis flymode $mode"
1319	}
1320	"axisLabels" {
1321	set bool $_settings(axisLabels)
1322	SendCmd "axis labels all $bool"
1323	}
1324	"axisMinorTicks" {
1325	set bool $_settings(axisMinorTicks)
1326	foreach axis { x y z } {
1327	SendCmd "axis minticks ${axis} $bool"
1328	}
1329	}
1330	"axisVisible" {
1331	set bool $_settings(axisVisible)
1332	SendCmd "axis visible all $bool"
1333	}
1334	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1335	set axis [string tolower [string range $what 4 4]]
1336	set bool $_settings($what)
1337	SendCmd "axis grid $axis $bool"
1338	}
1339	"background" {
1340	set bg [$itk_component(background) value]
1341	array set fgcolors {
1342	"black" "white"
1343	"white" "black"
1344	"grey" "black"
1345	}
1346	set fg $fgcolors($bg)
1347	configure -plotbackground $bg -plotforeground $fg
1348	$itk_component(view) delete "legend"
1349	SendCmd "screen bgcolor [Color2RGB $bg]"
1350	SendCmd "outline color [Color2RGB $fg]"
1351	SendCmd "axis color all [Color2RGB $fg]"
1352	DrawLegend
1353	}
1354	"colormap" {
1355	set _changed(colormap) 1
1356	StartBufferingCommands
1357	set color [$itk_component(colormap) value]
1358	set _settings(colormap) $color
1359	if { $color == "none" } {
1360	if { $_settings(colormapVisible) } {
1361	SendCmd "heightmap surface 0"
1362	set _settings(colormapVisible) 0
1363	}
1364	} else {
1365	if { !$_settings(colormapVisible) } {
1366	SendCmd "heightmap surface 1"
1367	set _settings(colormapVisible) 1
1368	}
1369	SetCurrentColormap $color
1370	if {$_settings(colormapDiscrete)} {
1371	set numColors [expr $_settings(numIsolines) + 1]
1372	SendCmd "colormap res $numColors $color"
1373	}
1374	}
1375	StopBufferingCommands
1376	EventuallyRequestLegend
1377	}
1378	"colormapVisible" {
1379	set bool $_settings($what)
1380	SendCmd "heightmap surface $bool"
1381	}
1382	"colormapDiscrete" {
1383	set bool $_settings($what)
1384	set numColors [expr $_settings(numIsolines) + 1]
1385	StartBufferingCommands
1386	if {$bool} {
1387	SendCmd "colormap res $numColors"
1388	# Discrete colormap requires preinterp on
1389	SendCmd "heightmap preinterp on"
1390	} else {
1391	SendCmd "colormap res default"
1392	# FIXME: add setting for preinterp (default on)
1393	SendCmd "heightmap preinterp on"
1394	}
1395	StopBufferingCommands
1396	EventuallyRequestLegend
1397	}
1398	"edges" {
1399	set bool $_settings(edges)
1400	SendCmd "heightmap edges $bool"
1401	}
1402	"field" {
1403	set label [$itk_component(field) value]
1404	set fname [$itk_component(field) translate $label]
1405	set _settings(field) $fname
1406	if { [info exists _fields($fname)] } {
1407	foreach { label units components } $_fields($fname) break
1408	if { $components > 1 } {
1409	set _colorMode vmag
1410	} else {
1411	set _colorMode scalar
1412	}
1413	set _curFldName $fname
1414	set _curFldLabel $label
1415	} else {
1416	puts stderr "unknown field \"$fname\""
1417	return
1418	}
1419	set label [$_first hints zlabel]
1420	if { $label == "" } {
1421	if { [string match "component*" $_curFldName] } {
1422	set label Z
1423	} else {
1424	set label $_curFldLabel
1425	}
1426	}
1427	# May be a space in the axis label.
1428	SendCmd [list axis name z $label]
1429
1430	if { [$_first hints zunits] == "" } {
1431	set units [lindex $_fields($_curFldName) 1]
1432	} else {
1433	set units [$_first hints zunits]
1434	}
1435	if { $units != "" } {
1436	# May be a space in the axis units.
1437	SendCmd [list axis units z $units]
1438	}
1439	# Get the new limits because the field changed.
1440	ResetAxes
1441	SendCmd "dataset scalar $_curFldName"
1442	SendCmd "heightmap colormode scalar $_curFldName"
1443	SendCmd "camera reset"
1444	UpdateContourList
1445	DrawLegend
1446	}
1447	"heightmapScale" {
1448	if { $_settings(isHeightmap) } {
1449	set scale [GetHeightmapScale]
1450	# Have to set the datasets individually because we are
1451	# tracking them in _comp2scale.
1452	foreach dataset [CurrentDatasets -all] {
1453	SendCmd "heightmap heightscale $scale $dataset"
1454	set _comp2scale($dataset) $scale
1455	}
1456	ResetAxes
1457	}
1458	}
1459	"isHeightmap" {
1460	set bool $_settings(isHeightmap)
1461	set c $itk_component(view)
1462	StartBufferingCommands
1463	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1464	if { $bool } {
1465	set _settings(heightmapScale) 50
1466	set _settings(opacity) $_settings(saveOpacity)
1467	set _settings(lighting) $_settings(saveLighting)
1468	set _settings(outline) 0
1469	} else {
1470	set _settings(heightmapScale) 0
1471	set _settings(lighting) 0
1472	set _settings(opacity) 100
1473	set _settings(outline) $_settings(saveOutline)
1474	}
1475	AdjustSetting lighting
1476	AdjustSetting opacity
1477	AdjustSetting outline
1478	set scale [GetHeightmapScale]
1479	# Have to set the datasets individually because we are
1480	# tracking them in _comp2scale.
1481	foreach dataset [CurrentDatasets -all] {
1482	SendCmd "heightmap heightscale $scale $dataset"
1483	set _comp2scale($dataset) $scale
1484	}
1485	if { $bool } {
1486	$itk_component(lighting) configure -state normal
1487	$itk_component(opacity) configure -state normal
1488	$itk_component(scale) configure -state normal
1489	$itk_component(opacity_l) configure -state normal
1490	$itk_component(scale_l) configure -state normal
1491	$itk_component(outline) configure -state disabled
1492	if {$_view(ortho)} {
1493	SendCmd "camera mode ortho"
1494	} else {
1495	SendCmd "camera mode persp"
1496	}
1497	} else {
1498	$itk_component(lighting) configure -state disabled
1499	$itk_component(opacity) configure -state disabled
1500	$itk_component(scale) configure -state disabled
1501	$itk_component(opacity_l) configure -state disabled
1502	$itk_component(scale_l) configure -state disabled
1503	$itk_component(outline) configure -state normal
1504	SendCmd "camera mode image"
1505	}
1506	if {$_settings(stretchToFit)} {
1507	if {$scale == 0} {
1508	SendCmd "camera aspect window"
1509	} else {
1510	SendCmd "camera aspect square"
1511	}
1512	}
1513	ResetAxes
1514	if { $bool } {
1515	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1516	$_arcball quaternion $q
1517	SendCmd "camera orient $q"
1518	} else {
1519	bind $c <ButtonPress-1> {}
1520	bind $c <B1-Motion> {}
1521	bind $c <ButtonRelease-1> {}
1522	}
1523	SendCmd "camera reset"
1524	# Fix the mouse bindings for rotation/panning and the
1525	# camera mode. Ideally we'd create a bindtag for these.
1526	if { $bool } {
1527	# Bindings for rotation via mouse
1528	bind $c <ButtonPress-1> \
1529	[itcl::code $this Rotate click %x %y]
1530	bind $c <B1-Motion> \
1531	[itcl::code $this Rotate drag %x %y]
1532	bind $c <ButtonRelease-1> \
1533	[itcl::code $this Rotate release %x %y]
1534	}
1535	StopBufferingCommands
1536	}
1537	"isolineColor" {
1538	set color [$itk_component(isolinecolor) value]
1539	if { $color == "none" } {
1540	if { $_settings(isolinesVisible) } {
1541	SendCmd "heightmap isolines 0"
1542	set _settings(isolinesVisible) 0
1543	}
1544	} else {
1545	if { !$_settings(isolinesVisible) } {
1546	SendCmd "heightmap isolines 1"
1547	set _settings(isolinesVisible) 1
1548	}
1549	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1550	}
1551	DrawLegend
1552	}
1553	"isolinesVisible" {
1554	set bool $_settings($what)
1555	SendCmd "heightmap isolines $bool"
1556	DrawLegend
1557	}
1558	"legendVisible" {
1559	if { !$_settings($what) } {
1560	$itk_component(view) delete legend
1561	}
1562	DrawLegend
1563	}
1564	"lighting" {
1565	if { $_settings(isHeightmap) } {
1566	set _settings(saveLighting) $_settings(lighting)
1567	set bool $_settings($what)
1568	SendCmd "heightmap lighting $bool"
1569	} else {
1570	SendCmd "heightmap lighting 0"
1571	}
1572	}
1573	"numIsolines" {
1574	set _settings(numIsolines) [$itk_component(numisolines) value]
1575	set _currentNumIsolines $_settings(numIsolines)
1576	UpdateContourList
1577	set _changed(numIsolines) 1
1578	SendCmd "heightmap contourlist [list $_contourList]"
1579	if {$_settings(colormapDiscrete)} {
1580	set numColors [expr $_settings(numIsolines) + 1]
1581	SendCmd "colormap res $numColors"
1582	EventuallyRequestLegend
1583	} else {
1584	DrawLegend
1585	}
1586	}
1587	"opacity" {
1588	set _changed(opacity) 1
1589	if { $_settings(isHeightmap) } {
1590	set _settings(saveOpacity) $_settings(opacity)
1591	set val $_settings(opacity)
1592	set sval [expr { 0.01 * double($val) }]
1593	SendCmd "heightmap opacity $sval"
1594	} else {
1595	SendCmd "heightmap opacity 1"
1596	}
1597	}
1598	"outline" {
1599	if { $_settings(isHeightmap) } {
1600	SendCmd "outline visible 0"
1601	} else {
1602	set _settings(saveOutline) $_settings(outline)
1603	set bool $_settings(outline)
1604	SendCmd "outline visible $bool"
1605	}
1606	}
1607	"stretchToFit" {
1608	set bool $_settings($what)
1609	if { $bool } {
1610	set heightScale [GetHeightmapScale]
1611	if {$heightScale == 0} {
1612	SendCmd "camera aspect window"
1613	} else {
1614	SendCmd "camera aspect square"
1615	}
1616	} else {
1617	SendCmd "camera aspect native"
1618	}
1619	}
1620	"wireframe" {
1621	set bool $_settings($what)
1622	SendCmd "heightmap wireframe $bool"
1623	}
1624	default {
1625	error "don't know how to fix $what"
1626	}
1627	}
1628	}
1629
1630	#
1631	# RequestLegend --
1632	#
1633	# Request a new legend from the server. The size of the legend
1634	# is determined from the height of the canvas.
1635	#
1636	# This should be called when
1637	# 1. A new current colormap is set.
1638	# 2. Window is resized.
1639	# 3. The limits of the data have changed. (Just need a redraw).
1640	# 4. Number of isolines have changed. (Just need a redraw).
1641	# 5. Legend becomes visible (Just need a redraw).
1642	#
1643	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1644	set _legendPending 0
1645	set font "Arial 8"
1646	set w 12
1647	set lineht [font metrics $font -linespace]
1648	# color ramp height = (canvas height) - (min and max value lines) - 2
1649	set h [expr {$_height - 2 * ($lineht + 2)}]
1650	set _legendHeight $h
1651
1652	set fname $_curFldName
1653	if { [string match "component*" $fname] } {
1654	set title ""
1655	} else {
1656	if { [info exists _fields($fname)] } {
1657	foreach { title units } $_fields($fname) break
1658	if { $units != "" } {
1659	set title [format "%s (%s)" $title $units]
1660	}
1661	} else {
1662	set title $fname
1663	}
1664	}
1665	# If there's a title too, substract one more line
1666	if { $title != "" } {
1667	incr h -$lineht
1668	}
1669	if { $h < 1} {
1670	return
1671	}
1672	# Set the legend on the first heightmap dataset.
1673	if { $_currentColormap != "" } {
1674	set cmap $_currentColormap
1675	SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1676	#SendCmd "heightmap colormode scalar $_curFldName"
1677	#SendCmd "dataset scalar $_curFldName"
1678	}
1679	}
1680
1681	#
1682	# ResetAxes --
1683	#
1684	# Set axis z bounds and range
1685	#
1686	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1687	if { ![info exists _limits($_curFldName)]} {
1688	SendCmd "dataset maprange all"
1689	SendCmd "axis autorange z on"
1690	SendCmd "axis autobounds z on"
1691	return
1692	}
1693	foreach { xmin xmax } $_limits(x) break
1694	foreach { ymin ymax } $_limits(y) break
1695	foreach { vmin vmax } $_limits($_curFldName) break
1696
1697	global tcl_precision
1698	set tcl_precision 17
1699	set xr [expr $xmax - $xmin]
1700	set yr [expr $ymax - $ymin]
1701	set vr [expr $vmax - $vmin]
1702	set r [expr ($yr > $xr) ? $yr : $xr]
1703	if { $vr < 1.0e-17 } {
1704	set dataScale 1.0
1705	} else {
1706	set dataScale [expr $r / $vr]
1707	}
1708	set heightScale [GetHeightmapScale]
1709	set bmin [expr $heightScale * $dataScale * $vmin]
1710	set bmax [expr $heightScale * $dataScale * $vmax]
1711	if {$heightScale > 0} {
1712	set zpos [expr - $bmin]
1713	SendCmd "heightmap pos 0 0 $zpos"
1714	} else {
1715	SendCmd "heightmap pos 0 0 0"
1716	}
1717	set bmax [expr $bmax - $bmin]
1718	set bmin 0
1719	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1720	SendCmd "axis bounds z $bmin $bmax"
1721	SendCmd "axis range z $_limits($_curFldName)"
1722	}
1723
1724	#
1725	# SetCurrentColormap --
1726	#
1727	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1728	# Keep track of the colormaps that we build.
1729	if { ![info exists _colormaps($name)] } {
1730	BuildColormap $name
1731	set _colormaps($name) 1
1732	}
1733	set _currentColormap $name
1734	SendCmd "heightmap colormap $_currentColormap"
1735	}
1736
1737
1738	#
1739	# BuildColormap --
1740	#
1741	# Build the designated colormap on the server.
1742	#
1743	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1744	set cmap [ColorsToColormap $name]
1745	if { [llength $cmap] == 0 } {
1746	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1747	}
1748	set wmap "0.0 1.0 1.0 1.0"
1749	SendCmd "colormap add $name { $cmap } { $wmap }"
1750	}
1751
1752	# ----------------------------------------------------------------------
1753	# CONFIGURATION OPTION: -mode
1754	# ----------------------------------------------------------------------
1755	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1756	switch -- $itk_option(-mode) {
1757	"heightmap" {
1758	set _settings(isHeightmap) 1
1759	}
1760	"contour" {
1761	set _settings(isHeightmap) 0
1762	}
1763	default {
1764	error "unknown mode settings \"$itk_option(-mode)\""
1765	}
1766	}
1767	if { !$_reset } {
1768	AdjustSetting isHeightmap
1769	}
1770	}
1771
1772	# ----------------------------------------------------------------------
1773	# CONFIGURATION OPTION: -plotbackground
1774	# ----------------------------------------------------------------------
1775	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1776	if { [isconnected] } {
1777	set rgb [Color2RGB $itk_option(-plotbackground)]
1778	if { !$_reset } {
1779	SendCmd "screen bgcolor $rgb"
1780	}
1781	$itk_component(view) configure -background $itk_option(-plotbackground)
1782	}
1783	}
1784
1785	# ----------------------------------------------------------------------
1786	# CONFIGURATION OPTION: -plotforeground
1787	# ----------------------------------------------------------------------
1788	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1789	if { [isconnected] } {
1790	set rgb [Color2RGB $itk_option(-plotforeground)]
1791	if { !$_reset } {
1792	SendCmd "outline color $rgb"
1793	SendCmd "axis color all $rgb"
1794	}
1795	}
1796	}
1797
1798	itcl::body Rappture::VtkHeightmapViewer::limits3 { dataobj } {
1799	lappend limits x [$dataobj limits x]
1800	lappend limits y [$dataobj limits y]
1801	if { [catch { $dataobj limits $_curFldName } vlim] != 0 } {
1802	set vlim [$dataobj limits v]
1803	}
1804	lappend limits v $vlim
1805	return $limits
1806	}
1807
1808	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1809
1810	set fg [option get $itk_component(hull) font Font]
1811	#set bfg [option get $itk_component(hull) boldFont Font]
1812
1813	set inner [$itk_component(main) insert end \
1814	-title "Contour/Surface Settings" \
1815	-icon [Rappture::icon contour2]]
1816	$inner configure -borderwidth 4
1817
1818	checkbutton $inner.legend \
1819	-text "Legend" \
1820	-variable [itcl::scope _settings(legendVisible)] \
1821	-command [itcl::code $this AdjustSetting legendVisible] \
1822	-font "Arial 9"
1823
1824	checkbutton $inner.wireframe \
1825	-text "Wireframe" \
1826	-variable [itcl::scope _settings(wireframe)] \
1827	-command [itcl::code $this AdjustSetting wireframe] \
1828	-font "Arial 9"
1829
1830	itk_component add lighting {
1831	checkbutton $inner.lighting \
1832	-text "Enable Lighting" \
1833	-variable [itcl::scope _settings(lighting)] \
1834	-command [itcl::code $this AdjustSetting lighting] \
1835	-font "Arial 9"
1836	} {
1837	ignore -font
1838	}
1839	checkbutton $inner.edges \
1840	-text "Edges" \
1841	-variable [itcl::scope _settings(edges)] \
1842	-command [itcl::code $this AdjustSetting edges] \
1843	-font "Arial 9"
1844
1845	itk_component add outline {
1846	checkbutton $inner.outline \
1847	-text "Outline" \
1848	-variable [itcl::scope _settings(outline)] \
1849	-command [itcl::code $this AdjustSetting outline] \
1850	-font "Arial 9"
1851	} {
1852	ignore -font
1853	}
1854	checkbutton $inner.stretch \
1855	-text "Stretch to fit" \
1856	-variable [itcl::scope _settings(stretchToFit)] \
1857	-command [itcl::code $this AdjustSetting stretchToFit] \
1858	-font "Arial 9"
1859
1860	checkbutton $inner.isolines \
1861	-text "Isolines" \
1862	-variable [itcl::scope _settings(isolinesVisible)] \
1863	-command [itcl::code $this AdjustSetting isolinesVisible] \
1864	-font "Arial 9"
1865
1866	checkbutton $inner.colormapDiscrete \
1867	-text "Discrete Colormap" \
1868	-variable [itcl::scope _settings(colormapDiscrete)] \
1869	-command [itcl::code $this AdjustSetting colormapDiscrete] \
1870	-font "Arial 9"
1871
1872	itk_component add field_l {
1873	label $inner.field_l -text "Field" -font "Arial 9"
1874	} {
1875	ignore -font
1876	}
1877	itk_component add field {
1878	Rappture::Combobox $inner.field -width 10 -editable no
1879	}
1880	bind $inner.field <<Value>> \
1881	[itcl::code $this AdjustSetting field]
1882
1883	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1884	itk_component add colormap {
1885	Rappture::Combobox $inner.colormap -width 10 -editable no
1886	}
1887	$inner.colormap choices insert end \
1888	"BCGYR" "BCGYR" \
1889	"BGYOR" "BGYOR" \
1890	"blue" "blue" \
1891	"blue-to-brown" "blue-to-brown" \
1892	"blue-to-orange" "blue-to-orange" \
1893	"blue-to-grey" "blue-to-grey" \
1894	"green-to-magenta" "green-to-magenta" \
1895	"greyscale" "greyscale" \
1896	"nanohub" "nanohub" \
1897	"rainbow" "rainbow" \
1898	"spectral" "spectral" \
1899	"ROYGB" "ROYGB" \
1900	"RYGCB" "RYGCB" \
1901	"brown-to-blue" "brown-to-blue" \
1902	"grey-to-blue" "grey-to-blue" \
1903	"orange-to-blue" "orange-to-blue" \
1904	"none" "none"
1905
1906	$itk_component(colormap) value "BCGYR"
1907	bind $inner.colormap <<Value>> \
1908	[itcl::code $this AdjustSetting colormap]
1909
1910	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1911	itk_component add isolinecolor {
1912	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1913	}
1914	$inner.isolinecolor choices insert end \
1915	"black" "black" \
1916	"blue" "blue" \
1917	"cyan" "cyan" \
1918	"green" "green" \
1919	"grey" "grey" \
1920	"magenta" "magenta" \
1921	"orange" "orange" \
1922	"red" "red" \
1923	"white" "white" \
1924	"none" "none"
1925
1926	$itk_component(isolinecolor) value "black"
1927	bind $inner.isolinecolor <<Value>> \
1928	[itcl::code $this AdjustSetting isolineColor]
1929
1930	label $inner.background_l -text "Background Color" -font "Arial 9"
1931	itk_component add background {
1932	Rappture::Combobox $inner.background -width 10 -editable no
1933	}
1934	$inner.background choices insert end \
1935	"black" "black" \
1936	"white" "white" \
1937	"grey" "grey"
1938
1939	$itk_component(background) value "white"
1940	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1941
1942	itk_component add opacity_l {
1943	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1944	} {
1945	ignore -font
1946	}
1947	itk_component add opacity {
1948	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1949	-variable [itcl::scope _settings(opacity)] \
1950	-showvalue off \
1951	-command [itcl::code $this AdjustSetting opacity]
1952	}
1953	itk_component add scale_l {
1954	label $inner.scale_l -text "Scale" -font "Arial 9"
1955	} {
1956	ignore -font
1957	}
1958	itk_component add scale {
1959	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1960	-variable [itcl::scope _settings(heightmapScale)] \
1961	-showvalue off \
1962	-command [itcl::code $this AdjustSetting heightmapScale]
1963	}
1964	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1965	itk_component add numisolines {
1966	Rappture::Spinint $inner.numisolines \
1967	-min 1 -max 50 -font "arial 9"
1968	}
1969	$itk_component(numisolines) value $_settings(numIsolines)
1970	bind $itk_component(numisolines) <<Value>> \
1971	[itcl::code $this AdjustSetting numIsolines]
1972
1973	frame $inner.separator1 -height 2 -relief sunken -bd 1
1974	frame $inner.separator2 -height 2 -relief sunken -bd 1
1975
1976	blt::table $inner \
1977	0,0 $inner.field_l -anchor w -pady 2 \
1978	0,1 $inner.field -anchor w -pady 2 -fill x \
1979	1,0 $inner.colormap_l -anchor w -pady 2 \
1980	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1981	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
1982	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
1983	3,0 $inner.background_l -anchor w -pady 2 \
1984	3,1 $inner.background -anchor w -pady 2 -fill x \
1985	4,0 $inner.numisolines_l -anchor w -pady 2 \
1986	4,1 $inner.numisolines -anchor w -pady 2 \
1987	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
1988	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1989	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1990	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
1991	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
1992	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
1993	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
1994	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1995	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
1996	14,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1997	15,0 $inner.opacity_l -anchor w -pady 2 \
1998	15,1 $inner.opacity -fill x -pady 2 \
1999	16,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
2000	16,1 $inner.scale -fill x -pady 2 -cspan 2 \
2001
2002	blt::table configure $inner r* c* -resize none
2003	blt::table configure $inner r17 c1 -resize expand
2004	}
2005
2006	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
2007
2008	set fg [option get $itk_component(hull) font Font]
2009	#set bfg [option get $itk_component(hull) boldFont Font]
2010
2011	set inner [$itk_component(main) insert end \
2012	-title "Axis Settings" \
2013	-icon [Rappture::icon axis2]]
2014	$inner configure -borderwidth 4
2015
2016	checkbutton $inner.visible \
2017	-text "Axes" \
2018	-variable [itcl::scope _settings(axisVisible)] \
2019	-command [itcl::code $this AdjustSetting axisVisible] \
2020	-font "Arial 9"
2021	checkbutton $inner.labels \
2022	-text "Axis Labels" \
2023	-variable [itcl::scope _settings(axisLabels)] \
2024	-command [itcl::code $this AdjustSetting axisLabels] \
2025	-font "Arial 9"
2026	label $inner.grid_l -text "Grid" -font "Arial 9"
2027	checkbutton $inner.xgrid \
2028	-text "X" \
2029	-variable [itcl::scope _settings(axisXGrid)] \
2030	-command [itcl::code $this AdjustSetting axisXGrid] \
2031	-font "Arial 9"
2032	checkbutton $inner.ygrid \
2033	-text "Y" \
2034	-variable [itcl::scope _settings(axisYGrid)] \
2035	-command [itcl::code $this AdjustSetting axisYGrid] \
2036	-font "Arial 9"
2037	checkbutton $inner.zgrid \
2038	-text "Z" \
2039	-variable [itcl::scope _settings(axisZGrid)] \
2040	-command [itcl::code $this AdjustSetting axisZGrid] \
2041	-font "Arial 9"
2042	checkbutton $inner.minorticks \
2043	-text "Minor Ticks" \
2044	-variable [itcl::scope _settings(axisMinorTicks)] \
2045	-command [itcl::code $this AdjustSetting axisMinorTicks] \
2046	-font "Arial 9"
2047
2048
2049	label $inner.mode_l -text "Mode" -font "Arial 9"
2050
2051	itk_component add axisflymode {
2052	Rappture::Combobox $inner.mode -width 10 -editable no
2053	}
2054	$inner.mode choices insert end \
2055	"static_triad" "static" \
2056	"closest_triad" "closest" \
2057	"furthest_triad" "furthest" \
2058	"outer_edges" "outer"
2059	$itk_component(axisflymode) value "static"
2060	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlymode]
2061
2062	blt::table $inner \
2063	0,0 $inner.visible -anchor w -cspan 4 \
2064	1,0 $inner.labels -anchor w -cspan 4 \
2065	2,0 $inner.minorticks -anchor w -cspan 4 \
2066	4,0 $inner.grid_l -anchor w \
2067	4,1 $inner.xgrid -anchor w \
2068	4,2 $inner.ygrid -anchor w \
2069	4,3 $inner.zgrid -anchor w \
2070	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2071	5,1 $inner.mode -fill x -cspan 3
2072
2073	blt::table configure $inner r* c* -resize none
2074	blt::table configure $inner r7 c6 -resize expand
2075	blt::table configure $inner r3 -height 0.125i
2076	}
2077
2078
2079	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2080	set inner [$itk_component(main) insert end \
2081	-title "Camera Settings" \
2082	-icon [Rappture::icon camera]]
2083	$inner configure -borderwidth 4
2084
2085	label $inner.view_l -text "view" -font "Arial 9"
2086	set f [frame $inner.view]
2087	foreach side { front back left right top bottom } {
2088	button $f.$side -image [Rappture::icon view$side] \
2089	-command [itcl::code $this SetOrientation $side]
2090	Rappture::Tooltip::for $f.$side "Change the view to $side"
2091	pack $f.$side -side left
2092	}
2093
2094	blt::table $inner \
2095	0,0 $inner.view_l -anchor e -pady 2 \
2096	0,1 $inner.view -anchor w -pady 2
2097
2098	set labels { qx qy qz qw xpan ypan zoom }
2099	set row 1
2100	foreach tag $labels {
2101	label $inner.${tag}label -text $tag -font "Arial 9"
2102	entry $inner.${tag} -font "Arial 9" -bg white \
2103	-textvariable [itcl::scope _view($tag)]
2104	bind $inner.${tag} <Return> \
2105	[itcl::code $this camera set ${tag}]
2106	bind $inner.${tag} <KP_Enter> \
2107	[itcl::code $this camera set ${tag}]
2108	blt::table $inner \
2109	$row,0 $inner.${tag}label -anchor e -pady 2 \
2110	$row,1 $inner.${tag} -anchor w -pady 2
2111	blt::table configure $inner r$row -resize none
2112	incr row
2113	}
2114	checkbutton $inner.ortho \
2115	-text "Orthographic Projection" \
2116	-variable [itcl::scope _view(ortho)] \
2117	-command [itcl::code $this camera set ortho] \
2118	-font "Arial 9"
2119	blt::table $inner \
2120	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2121	blt::table configure $inner r$row -resize none
2122	incr row
2123
2124	blt::table configure $inner c* r* -resize none
2125	blt::table configure $inner c2 -resize expand
2126	blt::table configure $inner r$row -resize expand
2127	}
2128
2129	#
2130	# camera --
2131	#
2132	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2133	switch -- $option {
2134	"show" {
2135	puts [array get _view]
2136	}
2137	"set" {
2138	set who [lindex $args 0]
2139	set x $_view($who)
2140	set code [catch { string is double $x } result]
2141	if { $code != 0 \|\| !$result } {
2142	return
2143	}
2144	switch -- $who {
2145	"ortho" {
2146	if {$_view(ortho)} {
2147	SendCmd "camera mode ortho"
2148	} else {
2149	SendCmd "camera mode persp"
2150	}
2151	}
2152	"xpan" - "ypan" {
2153	PanCamera
2154	}
2155	"qx" - "qy" - "qz" - "qw" {
2156	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2157	$_arcball quaternion $q
2158	EventuallyRotate $q
2159	}
2160	"zoom" {
2161	SendCmd "camera zoom $_view(zoom)"
2162	}
2163	}
2164	}
2165	}
2166	}
2167
2168	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2169	set bytes ""
2170	foreach dataobj [get] {
2171	foreach comp [$dataobj components] {
2172	set tag $dataobj-$comp
2173	#set contents [ConvertToVtkData $dataobj $comp]
2174	set contents [$dataobj vtkdata $comp]
2175	append bytes "$contents\n\n"
2176	}
2177	}
2178	return [list .vtk $bytes]
2179	}
2180
2181	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2182	if { [image width $_image(download)] > 0 &&
2183	[image height $_image(download)] > 0 } {
2184	set bytes [$_image(download) data -format "jpeg -quality 100"]
2185	set bytes [Rappture::encoding::decode -as b64 $bytes]
2186	return [list .jpg $bytes]
2187	}
2188	return ""
2189	}
2190
2191	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2192	Rappture::Balloon $popup \
2193	-title "[Rappture::filexfer::label downloadWord] as..."
2194	set inner [$popup component inner]
2195	label $inner.summary -text "" -anchor w
2196	radiobutton $inner.vtk_button -text "VTK data file" \
2197	-variable [itcl::scope _downloadPopup(format)] \
2198	-font "Arial 9 " \
2199	-value vtk
2200	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2201	radiobutton $inner.image_button -text "Image File" \
2202	-variable [itcl::scope _downloadPopup(format)] \
2203	-font "Arial 9 " \
2204	-value image
2205	Rappture::Tooltip::for $inner.image_button \
2206	"Save as digital image."
2207
2208	button $inner.ok -text "Save" \
2209	-highlightthickness 0 -pady 2 -padx 3 \
2210	-command $command \
2211	-compound left \
2212	-image [Rappture::icon download]
2213
2214	button $inner.cancel -text "Cancel" \
2215	-highlightthickness 0 -pady 2 -padx 3 \
2216	-command [list $popup deactivate] \
2217	-compound left \
2218	-image [Rappture::icon cancel]
2219
2220	blt::table $inner \
2221	0,0 $inner.summary -cspan 2 \
2222	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2223	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2224	4,1 $inner.cancel -width .9i -fill y \
2225	4,0 $inner.ok -padx 2 -width .9i -fill y
2226	blt::table configure $inner r3 -height 4
2227	blt::table configure $inner r4 -pady 4
2228	raise $inner.image_button
2229	$inner.vtk_button invoke
2230	return $inner
2231	}
2232
2233	#
2234	# SetObjectStyle --
2235	#
2236	# Set the style of the heightmap/contour object. This gets calls
2237	# for each dataset once as it is loaded. It can overridden by
2238	# the user controls.
2239	#
2240	#
2241	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2242	# Parse style string.
2243	set tag $dataobj-$comp
2244	array set style {
2245	-color BCGYR
2246	-opacity 100
2247	-levels 10
2248	}
2249	set stylelist [$dataobj style $comp]
2250	if { $stylelist != "" } {
2251	array set style $stylelist
2252	}
2253	# This is too complicated. We want to set the colormap, number of
2254	# isolines and opacity for the dataset. They can be the default values,
2255	# the style hints loaded with the dataset, or set by user controls. As
2256	# datasets get loaded, they first use the defaults that are overidden
2257	# by the style hints. If the user changes the global controls, then that
2258	# overrides everything else. I don't know what it means when global
2259	# controls are specified as style hints by each dataset. It complicates
2260	# the code to handle aberrant cases.
2261
2262	if { $_changed(opacity) } {
2263	set style(-opacity) $_settings(opacity)
2264	}
2265	if { $_changed(numIsolines) } {
2266	set style(-levels) $_settings(numIsolines)
2267	}
2268	if { $_changed(colormap) } {
2269	set style(-color) $_settings(colormap)
2270	}
2271	if { $_currentColormap == "" } {
2272	$itk_component(colormap) value $style(-color)
2273	}
2274	set _currentOpacity $style(-opacity)
2275	if { $_currentNumIsolines != $style(-levels) } {
2276	set _currentNumIsolines $style(-levels)
2277	set _settings(numIsolines) $_currentNumIsolines
2278	$itk_component(numisolines) value $_currentNumIsolines
2279	UpdateContourList
2280	DrawLegend
2281	}
2282	SendCmd "outline add $tag"
2283	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2284	SendCmd "outline visible $_settings(outline) $tag"
2285	set scale [GetHeightmapScale]
2286	SendCmd "[list heightmap add contourlist $_contourList $scale $tag]"
2287	set _comp2scale($tag) $_settings(heightmapScale)
2288	SendCmd "heightmap edges $_settings(edges) $tag"
2289	SendCmd "heightmap wireframe $_settings(wireframe) $tag"
2290	SetCurrentColormap $style(-color)
2291	set color [$itk_component(isolinecolor) value]
2292	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2293	SendCmd "heightmap lighting $_settings(isHeightmap) $tag"
2294	}
2295
2296	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2297	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2298	return 0
2299	}
2300	return 1
2301	}
2302
2303	# ----------------------------------------------------------------------
2304	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2305	#
2306	# Invoked automatically whenever the "legend" command comes in from
2307	# the rendering server. Indicates that binary image data with the
2308	# specified <size> will follow.
2309	# ----------------------------------------------------------------------
2310	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2311	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2312	if { [isconnected] } {
2313	set bytes [ReceiveBytes $size]
2314	if { ![info exists _image(legend)] } {
2315	set _image(legend) [image create photo]
2316	}
2317	$_image(legend) configure -data $bytes
2318	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2319	if { [catch {DrawLegend} errs] != 0 } {
2320	global errorInfo
2321	puts stderr "errs=$errs errorInfo=$errorInfo"
2322	}
2323	}
2324	}
2325
2326	#
2327	# DrawLegend --
2328	#
2329	# Draws the legend in the own canvas on the right side of the plot area.
2330	#
2331	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2332	set fname $_curFldName
2333	set c $itk_component(view)
2334	set w [winfo width $c]
2335	set h [winfo height $c]
2336	set font "Arial 8"
2337	set lineht [font metrics $font -linespace]
2338
2339	if { [string match "component*" $fname] } {
2340	set title ""
2341	} else {
2342	if { [info exists _fields($fname)] } {
2343	foreach { title units } $_fields($fname) break
2344	if { $units != "" } {
2345	set title [format "%s (%s)" $title $units]
2346	}
2347	} else {
2348	set title $fname
2349	}
2350	}
2351	set x [expr $w - 2]
2352	if { !$_settings(legendVisible) } {
2353	$c delete legend
2354	return
2355	}
2356	if { [$c find withtag "legend"] == "" } {
2357	set y 2
2358	# If there's a legend title, create a text item for the title.
2359	$c create text $x $y \
2360	-anchor ne \
2361	-fill $itk_option(-plotforeground) -tags "title legend" \
2362	-font $font
2363	$c create text $x $y \
2364	-anchor ne \
2365	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2366	-font $font
2367	incr y $lineht
2368	$c create image $x $y \
2369	-anchor ne \
2370	-image $_image(legend) -tags "colormap legend"
2371	$c create rectangle $x $y 1 1 \
2372	-fill "" -outline "" -tags "sensor legend"
2373	$c create text $x [expr {$h-2}] \
2374	-anchor se \
2375	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2376	-font $font
2377	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2378	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2379	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2380	}
2381	$c delete isoline
2382	set x2 $x
2383	set iw [image width $_image(legend)]
2384	set ih [image height $_image(legend)]
2385	set x1 [expr $x2 - ($iw*12)/10]
2386	set color [$itk_component(isolinecolor) value]
2387
2388	# Draw the isolines on the legend.
2389	if { $color != "none" && [info exists _limits($_curFldName)] &&
2390	$_settings(isolinesVisible) && $_currentNumIsolines > 0 } {
2391
2392	foreach { vmin vmax } $_limits($_curFldName) break
2393	set range [expr double($vmax - $vmin)]
2394	if { $range <= 0.0 } {
2395	set range 1.0; # Min is greater or equal to max.
2396	}
2397	set tags "isoline legend"
2398	set offset [expr 2 + $lineht]
2399	if { $title != "" } {
2400	incr offset $lineht
2401	}
2402	foreach value $_contourList {
2403	set norm [expr 1.0 - (($value - $vmin) / $range)]
2404	set y1 [expr int(round(($norm * $ih) + $offset))]
2405	for { set off 0 } { $off < 3 } { incr off } {
2406	set _isolines([expr $y1 + $off]) $value
2407	set _isolines([expr $y1 - $off]) $value
2408	}
2409	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2410	}
2411	}
2412
2413	$c bind title <ButtonPress> [itcl::code $this Combo post]
2414	$c bind title <Enter> [itcl::code $this Combo activate]
2415	$c bind title <Leave> [itcl::code $this Combo deactivate]
2416	# Reset the item coordinates according the current size of the plot.
2417	if { [info exists _limits($_curFldName)] } {
2418	foreach { vmin vmax } $_limits($_curFldName) break
2419	$c itemconfigure vmin -text [format %g $vmin]
2420	$c itemconfigure vmax -text [format %g $vmax]
2421	}
2422	set y 2
2423	# If there's a legend title, move the title to the correct position
2424	if { $title != "" } {
2425	$c itemconfigure title -text $title
2426	$c coords title $x $y
2427	incr y $lineht
2428	}
2429	$c coords vmax $x $y
2430	incr y $lineht
2431	$c coords colormap $x $y
2432	set ix [image width $_image(legend)]
2433	set ih [image height $_image(legend)]
2434	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2435	$c raise sensor
2436	$c coords vmin $x [expr {$h - 2}]
2437	}
2438
2439	#
2440	# EnterLegend --
2441	#
2442	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2443	SetLegendTip $x $y
2444	}
2445
2446	#
2447	# MotionLegend --
2448	#
2449	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2450	Rappture::Tooltip::tooltip cancel
2451	set c $itk_component(view)
2452	set cw [winfo width $c]
2453	set ch [winfo height $c]
2454	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2455	SetLegendTip $x $y
2456	}
2457	}
2458
2459	#
2460	# LeaveLegend --
2461	#
2462	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2463	Rappture::Tooltip::tooltip cancel
2464	.rappturetooltip configure -icon ""
2465	}
2466
2467	#
2468	# SetLegendTip --
2469	#
2470	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2471	set fname $_curFldName
2472	set c $itk_component(view)
2473	set w [winfo width $c]
2474	set h [winfo height $c]
2475	set font "Arial 8"
2476	set lineht [font metrics $font -linespace]
2477
2478	set ih [image height $_image(legend)]
2479	# Subtract off the offset of the color ramp from the top of the canvas
2480	set iy [expr $y - ($lineht + 2)]
2481
2482	if { [string match "component*" $fname] } {
2483	set title ""
2484	} else {
2485	if { [info exists _fields($fname)] } {
2486	foreach { title units } $_fields($fname) break
2487	if { $units != "" } {
2488	set title [format "%s (%s)" $title $units]
2489	}
2490	} else {
2491	set title $fname
2492	}
2493	}
2494	# If there's a legend title, increase the offset by the line height.
2495	if { $title != "" } {
2496	incr iy -$lineht
2497	}
2498
2499	# Make a swatch of the selected color
2500	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2501	return
2502	}
2503
2504	if { ![info exists _image(swatch)] } {
2505	set _image(swatch) [image create photo -width 24 -height 24]
2506	}
2507	set color [eval format "\#%02x%02x%02x" $pixel]
2508	$_image(swatch) put black -to 0 0 23 23
2509	$_image(swatch) put $color -to 1 1 22 22
2510
2511	# Compute the value of the point
2512	if { [info exists _limits($fname)] } {
2513	foreach { vmin vmax } $_limits($fname) break
2514	set t [expr 1.0 - (double($iy) / double($ih-1))]
2515	set value [expr $t * ($vmax - $vmin) + $vmin]
2516	} else {
2517	set value 0.0
2518	}
2519	set tipx [expr $x + 15]
2520	set tipy [expr $y - 5]
2521	.rappturetooltip configure -icon $_image(swatch)
2522	if { [info exists _isolines($y)] } {
2523	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2524	} else {
2525	Rappture::Tooltip::text $c [format "$title %g" $value]
2526	}
2527	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2528	}
2529
2530	# ----------------------------------------------------------------------
2531	# USAGE: _dropdown post
2532	# USAGE: _dropdown unpost
2533	# USAGE: _dropdown select
2534	#
2535	# Used internally to handle the dropdown list for this combobox. The
2536	# post/unpost options are invoked when the list is posted or unposted
2537	# to manage the relief of the controlling button. The select option
2538	# is invoked whenever there is a selection from the list, to assign
2539	# the value back to the gauge.
2540	# ----------------------------------------------------------------------
2541	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2542	set c $itk_component(view)
2543	switch -- $option {
2544	post {
2545	foreach { x1 y1 x2 y2 } [$c bbox title] break
2546	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2547	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2548	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2549	tk_popup $itk_component(fieldmenu) $x $y
2550	}
2551	activate {
2552	$c itemconfigure title -fill red
2553	}
2554	deactivate {
2555	$c itemconfigure title -fill $itk_option(-plotforeground)
2556	}
2557	invoke {
2558	$itk_component(field) value $_curFldLabel
2559	AdjustSetting field
2560	}
2561	default {
2562	error "bad option \"$option\": should be post, unpost, select"
2563	}
2564	}
2565	}
2566
2567	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2568	if { $_settings(isHeightmap) } {
2569	set val $_settings(heightmapScale)
2570	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2571	return $sval
2572	}
2573	set sval 0
2574	}
2575
2576	itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2577	array set positions {
2578	front "0.707107 0.707107 0 0"
2579	back "0 0 0.707107 0.707107"
2580	left "0.5 0.5 -0.5 -0.5"
2581	right "0.5 0.5 0.5 0.5"
2582	top "1 0 0 0"
2583	bottom "0 1 0 0"
2584	}
2585	foreach name { qw qx qy qz } value $positions($side) {
2586	set _view($name) $value
2587	}
2588	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2589	$_arcball quaternion $q
2590	SendCmd "camera orient $q"
2591	SendCmd "camera reset"
2592	set _view(xpan) 0
2593	set _view(ypan) 0
2594	set _view(zoom) 1.0
2595	}
2596
2597	itcl::body Rappture::VtkHeightmapViewer::UpdateContourList {} {
2598	if { ![info exists _limits($_curFldName)] } {
2599	return
2600	}
2601	foreach { vmin vmax } $_limits($_curFldName) break
2602	set v [blt::vector create \#auto]
2603	$v seq $vmin $vmax [expr $_currentNumIsolines+2]
2604	$v delete end 0
2605	set _contourList [$v range 0 end]
2606	blt::vector destroy $v
2607	}

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