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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 3592

Last change on this file since 3592 was 3592, checked in by ldelgass, 12 years ago
Report clientinfo first thing after connecting to visualization server.
File size: 86.0 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 900
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	saveOutline 0
234	}
235	array set _changed {
236	opacity 0
237	colormap 0
238	numIsolines 0
239	}
240	itk_component add view {
241	canvas $itk_component(plotarea).view \
242	-highlightthickness 0 -borderwidth 0
243	} {
244	usual
245	ignore -highlightthickness -borderwidth -background
246	}
247
248	itk_component add fieldmenu {
249	menu $itk_component(plotarea).menu \
250	-relief flat \
251	-tearoff no
252	} {
253	usual
254	ignore -background -foreground -relief -tearoff
255	}
256	set c $itk_component(view)
257	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
258	bind $c <4> [itcl::code $this Zoom in 0.25]
259	bind $c <5> [itcl::code $this Zoom out 0.25]
260	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
261	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
262	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
263	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
264	bind $c <Enter> "focus %W"
265	bind $c <Control-F1> [itcl::code $this ToggleConsole]
266
267	# Fix the scrollregion in case we go off screen
268	$c configure -scrollregion [$c bbox all]
269
270	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
271	set _map(cwidth) -1
272	set _map(cheight) -1
273	set _map(zoom) 1.0
274	set _map(original) ""
275
276	set f [$itk_component(main) component controls]
277	itk_component add reset {
278	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
279	-highlightthickness 0 \
280	-image [Rappture::icon reset-view] \
281	-command [itcl::code $this Zoom reset]
282	} {
283	usual
284	ignore -highlightthickness
285	}
286	pack $itk_component(reset) -side top -padx 2 -pady 2
287	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
288
289	itk_component add zoomin {
290	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
291	-highlightthickness 0 \
292	-image [Rappture::icon zoom-in] \
293	-command [itcl::code $this Zoom in]
294	} {
295	usual
296	ignore -highlightthickness
297	}
298	pack $itk_component(zoomin) -side top -padx 2 -pady 2
299	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
300
301	itk_component add zoomout {
302	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
303	-highlightthickness 0 \
304	-image [Rappture::icon zoom-out] \
305	-command [itcl::code $this Zoom out]
306	} {
307	usual
308	ignore -highlightthickness
309	}
310	pack $itk_component(zoomout) -side top -padx 2 -pady 2
311	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
312
313	itk_component add mode {
314	Rappture::PushButton $f.mode \
315	-onimage [Rappture::icon surface] \
316	-offimage [Rappture::icon surface] \
317	-variable [itcl::scope _settings(isHeightmap)] \
318	-command [itcl::code $this AdjustSetting isHeightmap] \
319	}
320	Rappture::Tooltip::for $itk_component(mode) \
321	"Toggle the surface/contour on/off"
322	pack $itk_component(mode) -padx 2 -pady 2
323
324	if { [catch {
325	BuildContourTab
326	BuildAxisTab
327	BuildCameraTab
328	} errs] != 0 } {
329	global errorInfo
330	puts stderr "errs=$errs errorInfo=$errorInfo"
331	}
332	set _image(legend) [image create photo]
333
334	# Hack around the Tk panewindow. The problem is that the requested
335	# size of the 3d view isn't set until an image is retrieved from
336	# the server. So the panewindow uses the tiny size.
337	set w 10000
338	pack forget $itk_component(view)
339	blt::table $itk_component(plotarea) \
340	0,0 $itk_component(view) -fill both -reqwidth $w
341	blt::table configure $itk_component(plotarea) c1 -resize none
342
343	# Bindings for panning via mouse
344	bind $itk_component(view) <ButtonPress-2> \
345	[itcl::code $this Pan click %x %y]
346	bind $itk_component(view) <B2-Motion> \
347	[itcl::code $this Pan drag %x %y]
348	bind $itk_component(view) <ButtonRelease-2> \
349	[itcl::code $this Pan release %x %y]
350
351	#bind $itk_component(view) <ButtonRelease-3> \
352	# [itcl::code $this Pick %x %y]
353
354	# Bindings for panning via keyboard
355	bind $itk_component(view) <KeyPress-Left> \
356	[itcl::code $this Pan set -10 0]
357	bind $itk_component(view) <KeyPress-Right> \
358	[itcl::code $this Pan set 10 0]
359	bind $itk_component(view) <KeyPress-Up> \
360	[itcl::code $this Pan set 0 -10]
361	bind $itk_component(view) <KeyPress-Down> \
362	[itcl::code $this Pan set 0 10]
363	bind $itk_component(view) <Shift-KeyPress-Left> \
364	[itcl::code $this Pan set -2 0]
365	bind $itk_component(view) <Shift-KeyPress-Right> \
366	[itcl::code $this Pan set 2 0]
367	bind $itk_component(view) <Shift-KeyPress-Up> \
368	[itcl::code $this Pan set 0 -2]
369	bind $itk_component(view) <Shift-KeyPress-Down> \
370	[itcl::code $this Pan set 0 2]
371
372	# Bindings for zoom via keyboard
373	bind $itk_component(view) <KeyPress-Prior> \
374	[itcl::code $this Zoom out]
375	bind $itk_component(view) <KeyPress-Next> \
376	[itcl::code $this Zoom in]
377
378	bind $itk_component(view) <Enter> "focus $itk_component(view)"
379
380	if {[string equal "x11" [tk windowingsystem]]} {
381	# Bindings for zoom via mouse
382	bind $itk_component(view) <4> [itcl::code $this Zoom out]
383	bind $itk_component(view) <5> [itcl::code $this Zoom in]
384	}
385
386	set _image(download) [image create photo]
387
388	eval itk_initialize $args
389	Connect
390	set _beforeConnect 0
391	}
392
393	# ----------------------------------------------------------------------
394	# DESTRUCTOR
395	# ----------------------------------------------------------------------
396	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
397	Disconnect
398	image delete $_image(plot)
399	image delete $_image(download)
400	catch { blt::arcball destroy $_arcball }
401	}
402
403	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
404	if { $_width < 2 } {
405	set _width 500
406	}
407	if { $_height < 2 } {
408	set _height 500
409	}
410	set _start [clock clicks -milliseconds]
411	SendCmd "screen size [expr $_width - 20] $_height"
412
413	set font "Arial 8"
414	set lh [font metrics $font -linespace]
415	set h [expr {$_height - 2 * ($lh + 2)}]
416	if { $h != $_legendHeight } {
417	EventuallyRequestLegend
418	} else {
419	DrawLegend
420	}
421	set _resizePending 0
422	}
423
424	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
425	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
426	SendCmd "camera orient $q"
427	set _rotatePending 0
428	}
429
430	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
431	if { !$_legendPending } {
432	set _legendPending 1
433	$_dispatcher event -idle !legend
434	}
435	}
436
437	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
438	set _width $w
439	set _height $h
440	$_arcball resize $w $h
441	if { !$_resizePending } {
442	set _resizePending 1
443	$_dispatcher event -after 250 !resize
444	}
445	}
446
447	set rotate_delay 100
448
449	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
450	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
451	if { !$_rotatePending } {
452	set _rotatePending 1
453	global rotate_delay
454	$_dispatcher event -after $rotate_delay !rotate
455	}
456	}
457
458	# ----------------------------------------------------------------------
459	# USAGE: add <dataobj> ?<settings>?
460	#
461	# Clients use this to add a data object to the plot. The optional
462	# <settings> are used to configure the plot. Allowed settings are
463	# -color, -brightness, -width, -linestyle, and -raise.
464	# ----------------------------------------------------------------------
465	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
466	if { ![$dataobj isvalid] } {
467	return; # Object doesn't contain valid data.
468	}
469	array set params {
470	-color auto
471	-width 1
472	-linestyle solid
473	-brightness 0
474	-raise 0
475	-description ""
476	-param ""
477	-type ""
478	}
479	array set params $settings
480	set params(-description) ""
481	set params(-param) ""
482	foreach {opt val} $settings {
483	if {![info exists params($opt)]} {
484	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
485	}
486	set params($opt) $val
487	}
488	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
489	# can't handle -autocolors yet
490	set params(-color) white
491	}
492	set pos [lsearch -exact $dataobj $_dlist]
493	if {$pos < 0} {
494	lappend _dlist $dataobj
495	}
496	set _obj2ovride($dataobj-color) $params(-color)
497	set _obj2ovride($dataobj-width) $params(-width)
498	set _obj2ovride($dataobj-raise) $params(-raise)
499	$_dispatcher event -idle !rebuild
500	}
501
502
503	# ----------------------------------------------------------------------
504	# USAGE: delete ?<dataobj1> <dataobj2> ...?
505	#
506	# Clients use this to delete a dataobj from the plot. If no dataobjs
507	# are specified, then all dataobjs are deleted. No data objects are
508	# deleted. They are only removed from the display list.
509	#
510	# ----------------------------------------------------------------------
511	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
512	if { [llength $args] == 0} {
513	set args $_dlist
514	}
515	# Delete all specified dataobjs
516	set changed 0
517	foreach dataobj $args {
518	set pos [lsearch -exact $_dlist $dataobj]
519	if { $pos < 0 } {
520	continue; # Don't know anything about it.
521	}
522	# Remove it from the dataobj list.
523	set _dlist [lreplace $_dlist $pos $pos]
524	array unset _obj2ovride $dataobj-*
525	array unset _settings $dataobj-*
526	# Append to the end of the dataobj list.
527	#lappend _dlist $dataobj
528	set changed 1
529	}
530	# If anything changed, then rebuild the plot
531	if { $changed } {
532	$_dispatcher event -idle !rebuild
533	}
534	}
535
536	# ----------------------------------------------------------------------
537	# USAGE: get ?-objects?
538	# USAGE: get ?-visible?
539	# USAGE: get ?-image view?
540	#
541	# Clients use this to query the list of objects being plotted, in
542	# order from bottom to top of this result. The optional "-image"
543	# flag can also request the internal images being shown.
544	# ----------------------------------------------------------------------
545	itcl::body Rappture::VtkHeightmapViewer::get {args} {
546	if {[llength $args] == 0} {
547	set args "-objects"
548	}
549	set op [lindex $args 0]
550	switch -- $op {
551	"-objects" {
552	# put the dataobj list in order according to -raise options
553	set dlist {}
554	foreach dataobj $_dlist {
555	if { ![IsValidObject $dataobj] } {
556	continue
557	}
558	if {[info exists _obj2ovride($dataobj-raise)] &&
559	$_obj2ovride($dataobj-raise)} {
560	set dlist [linsert $dlist 0 $dataobj]
561	} else {
562	lappend dlist $dataobj
563	}
564	}
565	return $dlist
566	}
567	"-visible" {
568	set dlist {}
569	foreach dataobj $_dlist {
570	if { ![IsValidObject $dataobj] } {
571	continue
572	}
573	if { ![info exists _obj2ovride($dataobj-raise)] } {
574	# No setting indicates that the object isn't visible.
575	continue
576	}
577	# Otherwise use the -raise parameter to put the object to
578	# the front of the list.
579	if { $_obj2ovride($dataobj-raise) } {
580	set dlist [linsert $dlist 0 $dataobj]
581	} else {
582	lappend dlist $dataobj
583	}
584	}
585	return $dlist
586	}
587	-image {
588	if {[llength $args] != 2} {
589	error "wrong # args: should be \"get -image view\""
590	}
591	switch -- [lindex $args end] {
592	view {
593	return $_image(plot)
594	}
595	default {
596	error "bad image name \"[lindex $args end]\": should be view"
597	}
598	}
599	}
600	default {
601	error "bad option \"$op\": should be -objects or -image"
602	}
603	}
604	}
605
606	#
607	# scale --
608	#
609	# This gets called either incrementally as new simulations are
610	# added or all at once as a sequence of heightmaps.
611	# This accounts for all objects--even those not showing on the
612	# screen. Because of this, the limits are appropriate for all
613	# objects as the user scans through data in the ResultSet viewer.
614	#
615	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
616	foreach dataobj $args {
617	if { ![$dataobj isvalid] } {
618	continue; # Object doesn't contain valid data.
619	}
620	foreach axis { x y } {
621	set lim [$dataobj limits $axis]
622	if { ![info exists _limits($axis)] } {
623	set _limits($axis) $lim
624	continue
625	}
626	foreach {min max} $lim break
627	foreach {amin amax} $_limits($axis) break
628	if { $amin > $min } {
629	set amin $min
630	}
631	if { $amax < $max } {
632	set amax $max
633	}
634	set _limits($axis) [list $amin $amax]
635	}
636	foreach { fname lim } [$dataobj fieldlimits] {
637	if { ![info exists _limits($fname)] } {
638	set _limits($fname) $lim
639	continue
640	}
641	foreach {min max} $lim break
642	foreach {fmin fmax} $_limits($fname) break
643	if { $fmin > $min } {
644	set fmin $min
645	}
646	if { $fmax < $max } {
647	set fmax $max
648	}
649	set _limits($fname) [list $fmin $fmax]
650	}
651	}
652	}
653
654	# ----------------------------------------------------------------------
655	# USAGE: download coming
656	# USAGE: download controls <downloadCommand>
657	# USAGE: download now
658	#
659	# Clients use this method to create a downloadable representation
660	# of the plot. Returns a list of the form {ext string}, where
661	# "ext" is the file extension (indicating the type of data) and
662	# "string" is the data itself.
663	# ----------------------------------------------------------------------
664	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
665	switch $option {
666	coming {
667	if {[catch {
668	blt::winop snap $itk_component(plotarea) $_image(download)
669	}]} {
670	$_image(download) configure -width 1 -height 1
671	$_image(download) put #000000
672	}
673	}
674	controls {
675	set popup .vtkviewerdownload
676	if { ![winfo exists .vtkviewerdownload] } {
677	set inner [BuildDownloadPopup $popup [lindex $args 0]]
678	} else {
679	set inner [$popup component inner]
680	}
681	set _downloadPopup(image_controls) $inner.image_frame
682	set num [llength [get]]
683	set num [expr {($num == 1) ? "1 result" : "$num results"}]
684	set word [Rappture::filexfer::label downloadWord]
685	$inner.summary configure -text "$word $num in the following format:"
686	update idletasks ;# Fix initial sizes
687	return $popup
688	}
689	now {
690	set popup .vtkviewerdownload
691	if {[winfo exists .vtkviewerdownload]} {
692	$popup deactivate
693	}
694	switch -- $_downloadPopup(format) {
695	"image" {
696	return [$this GetImage [lindex $args 0]]
697	}
698	"vtk" {
699	return [$this GetVtkData [lindex $args 0]]
700	}
701	}
702	return ""
703	}
704	default {
705	error "bad option \"$option\": should be coming, controls, now"
706	}
707	}
708	}
709
710	# ----------------------------------------------------------------------
711	# USAGE: Connect ?<host:port>,<host:port>...?
712	#
713	# Clients use this method to establish a connection to a new
714	# server, or to reestablish a connection to the previous server.
715	# Any existing connection is automatically closed.
716	# ----------------------------------------------------------------------
717	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
718	global readyForNextFrame
719	set readyForNextFrame 1
720	set _reset 1
721	set _hosts [GetServerList "vtkvis"]
722	if { "" == $_hosts } {
723	return 0
724	}
725	set result [VisViewer::Connect $_hosts]
726	if { $result } {
727	if { $_reportClientInfo } {
728	# Tell the server the viewer, hub, user and session.
729	# Do this immediately on connect before buffing any commands
730	global env
731
732	set info {}
733	set user "???"
734	if { [info exists env(USER)] } {
735	set user $env(USER)
736	}
737	set session "???"
738	if { [info exists env(SESSION)] } {
739	set session $env(SESSION)
740	}
741	lappend info "hub" [exec hostname]
742	lappend info "client" "vtkheightmapviewer"
743	lappend info "user" $user
744	lappend info "session" $session
745	SendCmd "clientinfo [list $info]"
746	}
747
748	set w [winfo width $itk_component(view)]
749	set h [winfo height $itk_component(view)]
750	EventuallyResize $w $h
751	}
752	return $result
753	}
754
755	#
756	# isconnected --
757	#
758	# Indicates if we are currently connected to the visualization server.
759	#
760	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
761	return [VisViewer::IsConnected]
762	}
763
764	#
765	# disconnect --
766	#
767	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
768	Disconnect
769	set _reset 1
770	}
771
772	#
773	# Disconnect --
774	#
775	# Clients use this method to disconnect from the current rendering
776	# server.
777	#
778	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
779	VisViewer::Disconnect
780
781	$_dispatcher cancel !rebuild
782	$_dispatcher cancel !resize
783	$_dispatcher cancel !rotate
784	$_dispatcher cancel !legend
785	# disconnected -- no more data sitting on server
786	array unset _datasets
787	array unset _data
788	array unset _colormaps
789	array unset _obj2datasets
790	global readyForNextFrame
791	set readyForNextFrame 1
792	}
793
794	# ----------------------------------------------------------------------
795	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
796	#
797	# Invoked automatically whenever the "image" command comes in from
798	# the rendering server. Indicates that binary image data with the
799	# specified <size> will follow.
800	# ----------------------------------------------------------------------
801	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
802	global readyForNextFrame
803	set readyForNextFrame 1
804	array set info {
805	-token "???"
806	-bytes 0
807	-type image
808	}
809	array set info $args
810	set bytes [ReceiveBytes $info(-bytes)]
811	if { $info(-type) == "image" } {
812	if 0 {
813	set f [open "last.ppm" "w"]
814	puts $f $bytes
815	close $f
816	}
817	$_image(plot) configure -data $bytes
818	set time [clock seconds]
819	set date [clock format $time]
820	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
821	if { $_start > 0 } {
822	set finish [clock clicks -milliseconds]
823	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
824	set _start 0
825	}
826	} elseif { $info(type) == "print" } {
827	set tag $this-print-$info(-token)
828	set _hardcopy($tag) $bytes
829	}
830	}
831
832	#
833	# ReceiveDataset --
834	#
835	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
836	if { ![isconnected] } {
837	return
838	}
839	set option [lindex $args 0]
840	switch -- $option {
841	"scalar" {
842	set option [lindex $args 1]
843	switch -- $option {
844	"world" {
845	foreach { x y z value tag } [lrange $args 2 end] break
846	}
847	"pixel" {
848	foreach { x y value tag } [lrange $args 2 end] break
849	}
850	}
851	}
852	"vector" {
853	set option [lindex $args 1]
854	switch -- $option {
855	"world" {
856	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
857	}
858	"pixel" {
859	foreach { x y vx vy vz tag } [lrange $args 2 end] break
860	}
861	}
862	}
863	"names" {
864	foreach { name } [lindex $args 1] {
865	#puts stderr "Dataset: $name"
866	}
867	}
868	default {
869	error "unknown dataset option \"$option\" from server"
870	}
871	}
872	}
873
874	# ----------------------------------------------------------------------
875	# USAGE: Rebuild
876	#
877	# Called automatically whenever something changes that affects the
878	# data in the widget. Clears any existing data and rebuilds the
879	# widget to display new data.
880	# ----------------------------------------------------------------------
881	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
882	set w [winfo width $itk_component(view)]
883	set h [winfo height $itk_component(view)]
884	if { $w < 2 \|\| $h < 2 } {
885	$_dispatcher event -idle !rebuild
886	return
887	}
888
889	# Turn on buffering of commands to the server. We don't want to
890	# be preempted by a server disconnect/reconnect (which automatically
891	# generates a new call to Rebuild).
892	StartBufferingCommands
893
894	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
895	set _width $w
896	set _height $h
897	$_arcball resize $w $h
898	DoResize
899	if { $_settings(stretchToFit) } {
900	AdjustSetting stretchToFit
901	}
902	}
903	if { $_reset } {
904	InitSettings isHeightmap background
905	#
906	# Reset the camera and other view parameters
907	#
908	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
909
910	# Let's see how this goes. I think it's preferable to overloading the
911	# axis title with the exponent.
912	SendCmd "axis exp 0 0 0 1"
913
914	SendCmd "axis lrot z 90"
915	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
916	$_arcball quaternion $q
917	if {$_settings(isHeightmap) } {
918	if { $_view(ortho)} {
919	SendCmd "camera mode ortho"
920	} else {
921	SendCmd "camera mode persp"
922	}
923	DoRotate
924	SendCmd "camera reset"
925	}
926	PanCamera
927	StopBufferingCommands
928	SendCmd "imgflush"
929	StartBufferingCommands
930	}
931
932	set _first ""
933	# Start off with no datasets are visible.
934	SendCmd "dataset visible 0"
935	set scale [GetHeightmapScale]
936	foreach dataobj [get -objects] {
937	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
938	set _first $dataobj
939	}
940	set _obj2datasets($dataobj) ""
941	foreach comp [$dataobj components] {
942	set tag $dataobj-$comp
943	if { ![info exists _datasets($tag)] } {
944	set bytes [$dataobj vtkdata $comp]
945	if 0 {
946	set f [open /tmp/vtkheightmap.vtk "w"]
947	puts $f $bytes
948	close $f
949	}
950	set length [string length $bytes]
951	if { $_reportClientInfo } {
952	set info {}
953	lappend info "tool_id" [$dataobj hints toolId]
954	lappend info "tool_name" [$dataobj hints toolName]
955	lappend info "tool_version" [$dataobj hints toolRevision]
956	lappend info "tool_title" [$dataobj hints toolTitle]
957	lappend info "dataset_label" [$dataobj hints label]
958	lappend info "dataset_size" $length
959	lappend info "dataset_tag" $tag
960	SendCmd [list "clientinfo" $info]
961	}
962	SendCmd "dataset add $tag data follows $length"
963	append _outbuf $bytes
964	set _datasets($tag) 1
965	SetObjectStyle $dataobj $comp
966	}
967	lappend _obj2datasets($dataobj) $tag
968	if { [info exists _obj2ovride($dataobj-raise)] } {
969	# Setting dataset visible enables outline
970	# and heightmap
971	SendCmd "dataset visible 1 $tag"
972	}
973	if { ![info exists _comp2scale($tag)] \|\|
974	$_comp2scale($tag) != $scale } {
975	SendCmd "heightmap heightscale $scale $tag"
976	set _comp2scale($tag) $scale
977	}
978	}
979	}
980	if { $_first != "" } {
981	$itk_component(field) choices delete 0 end
982	$itk_component(fieldmenu) delete 0 end
983	array unset _fields
984	set _curFldName ""
985	foreach cname [$_first components] {
986	foreach fname [$_first fieldnames $cname] {
987	if { [info exists _fields($fname)] } {
988	continue
989	}
990	foreach { label units components } \
991	[$_first fieldinfo $fname] break
992	$itk_component(field) choices insert end "$fname" "$label"
993	$itk_component(fieldmenu) add radiobutton -label "$label" \
994	-value $label -variable [itcl::scope _curFldLabel] \
995	-selectcolor red \
996	-activebackground $itk_option(-plotbackground) \
997	-activeforeground $itk_option(-plotforeground) \
998	-font "Arial 8" \
999	-command [itcl::code $this Combo invoke]
1000	set _fields($fname) [list $label $units $components]
1001	if { $_curFldName == "" } {
1002	set _curFldName $fname
1003	set _curFldLabel $label
1004	}
1005	}
1006	}
1007	$itk_component(field) value $_curFldLabel
1008	}
1009	InitSettings stretchToFit outline
1010
1011	if { $_reset } {
1012	SendCmd "axis tickpos outside"
1013	foreach axis { x y z } {
1014	SendCmd "axis lformat $axis %g"
1015	}
1016
1017	foreach axis { x y z } {
1018	set label [$_first hints ${axis}label]
1019	if { $label == "" } {
1020	if {$axis == "z"} {
1021	if { [string match "component*" $_curFldName] } {
1022	set label [string toupper $axis]
1023	} else {
1024	set label $_curFldLabel
1025	}
1026	} else {
1027	set label [string toupper $axis]
1028	}
1029	}
1030	# May be a space in the axis label.
1031	SendCmd [list axis name $axis $label]
1032
1033	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1034	set units [lindex $_fields($_curFldName) 1]
1035	} else {
1036	set units [$_first hints ${axis}units]
1037	}
1038	if { $units != "" } {
1039	# May be a space in the axis units.
1040	SendCmd [list axis units $axis $units]
1041	}
1042	}
1043	#
1044	# Reset the camera and other view parameters
1045	#
1046	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
1047	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)]"
1048	ResetAxes
1049	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1050	$_arcball quaternion $q
1051	if {$_settings(isHeightmap) } {
1052	if { $_view(ortho)} {
1053	SendCmd "camera mode ortho"
1054	} else {
1055	SendCmd "camera mode persp"
1056	}
1057	DoRotate
1058	SendCmd "camera reset"
1059	}
1060	PanCamera
1061	InitSettings axisXGrid axisYGrid axisZGrid \
1062	axisVisible axisLabels
1063	InitSettings heightmapScale field isHeightmap
1064	if { [array size _fields] < 2 } {
1065	blt::table forget $itk_component(field) $itk_component(field_l)
1066	}
1067	RequestLegend
1068	set _reset 0
1069	}
1070	global readyForNextFrame
1071	set readyForNextFrame 0; # Don't advance to the next frame
1072
1073	# Actually write the commands to the server socket. If it fails, we don't
1074	# care. We're finished here.
1075	blt::busy hold $itk_component(hull)
1076	StopBufferingCommands
1077	blt::busy release $itk_component(hull)
1078	}
1079
1080	# ----------------------------------------------------------------------
1081	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1082	#
1083	# Returns a list of server IDs for the current datasets being displayed. This
1084	# is normally a single ID, but it might be a list of IDs if the current data
1085	# object has multiple components.
1086	# ----------------------------------------------------------------------
1087	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1088	set flag [lindex $args 0]
1089	switch -- $flag {
1090	"-all" {
1091	if { [llength $args] > 1 } {
1092	error "CurrentDatasets: can't specify dataobj after \"-all\""
1093	}
1094	set dlist [get -objects]
1095	}
1096	"-visible" {
1097	if { [llength $args] > 1 } {
1098	set dlist {}
1099	set args [lrange $args 1 end]
1100	foreach dataobj $args {
1101	if { [info exists _obj2ovride($dataobj-raise)] } {
1102	lappend dlist $dataobj
1103	}
1104	}
1105	} else {
1106	set dlist [get -visible]
1107	}
1108	}
1109	default {
1110	set dlist $args
1111	}
1112	}
1113	set rlist ""
1114	foreach dataobj $dlist {
1115	foreach comp [$dataobj components] {
1116	set tag $dataobj-$comp
1117	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1118	lappend rlist $tag
1119	}
1120	}
1121	}
1122	return $rlist
1123	}
1124
1125	# ----------------------------------------------------------------------
1126	# USAGE: Zoom in
1127	# USAGE: Zoom out
1128	# USAGE: Zoom reset
1129	#
1130	# Called automatically when the user clicks on one of the zoom
1131	# controls for this widget. Changes the zoom for the current view.
1132	# ----------------------------------------------------------------------
1133	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1134	switch -- $option {
1135	"in" {
1136	set _view(zoom) [expr {$_view(zoom)*1.25}]
1137	SendCmd "camera zoom $_view(zoom)"
1138	}
1139	"out" {
1140	set _view(zoom) [expr {$_view(zoom)*0.8}]
1141	SendCmd "camera zoom $_view(zoom)"
1142	}
1143	"reset" {
1144	array set _view {
1145	qw 0.36
1146	qx 0.25
1147	qy 0.50
1148	qz 0.70
1149	zoom 1.0
1150	xpan 0
1151	ypan 0
1152	}
1153	if { $_first != "" } {
1154	set location [$_first hints camera]
1155	if { $location != "" } {
1156	array set _view $location
1157	}
1158	}
1159	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1160	$_arcball quaternion $q
1161	if {$_settings(isHeightmap) } {
1162	DoRotate
1163	}
1164	SendCmd "camera reset"
1165	}
1166	}
1167	}
1168
1169	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1170	set x $_view(xpan)
1171	set y $_view(ypan)
1172	SendCmd "camera pan $x $y"
1173	}
1174
1175
1176	# ----------------------------------------------------------------------
1177	# USAGE: Rotate click <x> <y>
1178	# USAGE: Rotate drag <x> <y>
1179	# USAGE: Rotate release <x> <y>
1180	#
1181	# Called automatically when the user clicks/drags/releases in the
1182	# plot area. Moves the plot according to the user's actions.
1183	# ----------------------------------------------------------------------
1184	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1185	switch -- $option {
1186	"click" {
1187	$itk_component(view) configure -cursor fleur
1188	set _click(x) $x
1189	set _click(y) $y
1190	}
1191	"drag" {
1192	if {[array size _click] == 0} {
1193	Rotate click $x $y
1194	} else {
1195	set w [winfo width $itk_component(view)]
1196	set h [winfo height $itk_component(view)]
1197	if {$w <= 0 \|\| $h <= 0} {
1198	return
1199	}
1200
1201	if {[catch {
1202	# this fails sometimes for no apparent reason
1203	set dx [expr {double($x-$_click(x))/$w}]
1204	set dy [expr {double($y-$_click(y))/$h}]
1205	}]} {
1206	return
1207	}
1208	if { $dx == 0 && $dy == 0 } {
1209	return
1210	}
1211	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1212	EventuallyRotate $q
1213	set _click(x) $x
1214	set _click(y) $y
1215	}
1216	}
1217	"release" {
1218	Rotate drag $x $y
1219	$itk_component(view) configure -cursor ""
1220	catch {unset _click}
1221	}
1222	default {
1223	error "bad option \"$option\": should be click, drag, release"
1224	}
1225	}
1226	}
1227
1228	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1229	foreach tag [CurrentDatasets -visible] {
1230	SendCmd "dataset getscalar pixel $x $y $tag"
1231	}
1232	}
1233
1234	# ----------------------------------------------------------------------
1235	# USAGE: $this Pan click x y
1236	# $this Pan drag x y
1237	# $this Pan release x y
1238	#
1239	# Called automatically when the user clicks on one of the zoom
1240	# controls for this widget. Changes the zoom for the current view.
1241	# ----------------------------------------------------------------------
1242	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1243	switch -- $option {
1244	"set" {
1245	set w [winfo width $itk_component(view)]
1246	set h [winfo height $itk_component(view)]
1247	set x [expr $x / double($w)]
1248	set y [expr $y / double($h)]
1249	set _view(xpan) [expr $_view(xpan) + $x]
1250	set _view(ypan) [expr $_view(ypan) + $y]
1251	PanCamera
1252	return
1253	}
1254	"click" {
1255	set _click(x) $x
1256	set _click(y) $y
1257	$itk_component(view) configure -cursor hand1
1258	}
1259	"drag" {
1260	if { ![info exists _click(x)] } {
1261	set _click(x) $x
1262	}
1263	if { ![info exists _click(y)] } {
1264	set _click(y) $y
1265	}
1266	set w [winfo width $itk_component(view)]
1267	set h [winfo height $itk_component(view)]
1268	set dx [expr ($_click(x) - $x)/double($w)]
1269	set dy [expr ($_click(y) - $y)/double($h)]
1270	set _click(x) $x
1271	set _click(y) $y
1272	set _view(xpan) [expr $_view(xpan) - $dx]
1273	set _view(ypan) [expr $_view(ypan) - $dy]
1274	PanCamera
1275	}
1276	"release" {
1277	Pan drag $x $y
1278	$itk_component(view) configure -cursor ""
1279	}
1280	default {
1281	error "unknown option \"$option\": should set, click, drag, or release"
1282	}
1283	}
1284	}
1285
1286	# ----------------------------------------------------------------------
1287	# USAGE: InitSettings <what> ?<value>?
1288	#
1289	# Used internally to update rendering settings whenever parameters
1290	# change in the popup settings panel. Sends the new settings off
1291	# to the back end.
1292	# ----------------------------------------------------------------------
1293	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1294	foreach spec $args {
1295	if { [info exists _settings($_first-$spec)] } {
1296	# Reset global setting with dataobj specific setting
1297	set _settings($spec) $_settings($_first-$spec)
1298	}
1299	AdjustSetting $spec
1300	}
1301	}
1302
1303	#
1304	# AdjustSetting --
1305	#
1306	# Changes/updates a specific setting in the widget. There are
1307	# usually user-setable option. Commands are sent to the render
1308	# server.
1309	#
1310	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1311	if { $_beforeConnect } {
1312	return
1313	}
1314	switch -- $what {
1315	"axisFlymode" {
1316	set mode [$itk_component(axisflymode) value]
1317	set mode [$itk_component(axisflymode) translate $mode]
1318	set _settings($what) $mode
1319	SendCmd "axis flymode $mode"
1320	}
1321	"axisLabels" {
1322	set bool $_settings(axisLabels)
1323	SendCmd "axis labels all $bool"
1324	}
1325	"axisMinorTicks" {
1326	set bool $_settings(axisMinorTicks)
1327	foreach axis { x y z } {
1328	SendCmd "axis minticks ${axis} $bool"
1329	}
1330	}
1331	"axisVisible" {
1332	set bool $_settings(axisVisible)
1333	SendCmd "axis visible all $bool"
1334	}
1335	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1336	set axis [string tolower [string range $what 4 4]]
1337	set bool $_settings($what)
1338	SendCmd "axis grid $axis $bool"
1339	}
1340	"background" {
1341	set bgcolor [$itk_component(background) value]
1342	array set fgcolors {
1343	"black" "white"
1344	"white" "black"
1345	"grey" "black"
1346	}
1347	configure -plotbackground $bgcolor \
1348	-plotforeground $fgcolors($bgcolor)
1349	$itk_component(view) delete "legend"
1350	DrawLegend
1351	}
1352	"colormap" {
1353	set _changed(colormap) 1
1354	StartBufferingCommands
1355	set color [$itk_component(colormap) value]
1356	set _settings(colormap) $color
1357	if { $color == "none" } {
1358	if { $_settings(colormapVisible) } {
1359	SendCmd "heightmap surface 0"
1360	set _settings(colormapVisible) 0
1361	}
1362	} else {
1363	if { !$_settings(colormapVisible) } {
1364	SendCmd "heightmap surface 1"
1365	set _settings(colormapVisible) 1
1366	}
1367	SetCurrentColormap $color
1368	if {$_settings(colormapDiscrete)} {
1369	set numColors [expr $_settings(numIsolines) - 1]
1370	SendCmd "colormap res $numColors $color"
1371	}
1372	}
1373	StopBufferingCommands
1374	EventuallyRequestLegend
1375	}
1376	"colormapVisible" {
1377	set bool $_settings($what)
1378	SendCmd "heightmap surface $bool"
1379	}
1380	"colormapDiscrete" {
1381	set bool $_settings($what)
1382	set numColors [expr $_settings(numIsolines) - 1]
1383	StartBufferingCommands
1384	if {$bool} {
1385	SendCmd "colormap res $numColors"
1386	# Discrete colormap requires preinterp on
1387	SendCmd "heightmap preinterp on"
1388	} else {
1389	SendCmd "colormap res default"
1390	# FIXME: add setting for preinterp (default on)
1391	SendCmd "heightmap preinterp on"
1392	}
1393	StopBufferingCommands
1394	EventuallyRequestLegend
1395	}
1396	"edges" {
1397	set bool $_settings(edges)
1398	SendCmd "heightmap edges $bool"
1399	}
1400	"field" {
1401	set label [$itk_component(field) value]
1402	set fname [$itk_component(field) translate $label]
1403	set _settings(field) $fname
1404	if { [info exists _fields($fname)] } {
1405	foreach { label units components } $_fields($fname) break
1406	if { $components > 1 } {
1407	set _colorMode vmag
1408	} else {
1409	set _colorMode scalar
1410	}
1411	set _curFldName $fname
1412	set _curFldLabel $label
1413	} else {
1414	puts stderr "unknown field \"$fname\""
1415	return
1416	}
1417	set label [$_first hints zlabel]
1418	if { $label == "" } {
1419	if { [string match "component*" $_curFldName] } {
1420	set label Z
1421	} else {
1422	set label $_curFldLabel
1423	}
1424	}
1425	# May be a space in the axis label.
1426	SendCmd [list axis name z $label]
1427
1428	if { [$_first hints zunits] == "" } {
1429	set units [lindex $_fields($_curFldName) 1]
1430	} else {
1431	set units [$_first hints zunits]
1432	}
1433	if { $units != "" } {
1434	# May be a space in the axis units.
1435	SendCmd [list axis units z $units]
1436	}
1437	# Get the new limits because the field changed.
1438	ResetAxes
1439	SendCmd "dataset scalar $_curFldName"
1440	SendCmd "heightmap colormode scalar $_curFldName"
1441	SendCmd "camera reset"
1442	DrawLegend
1443	}
1444	"heightmapScale" {
1445	if { $_settings(isHeightmap) } {
1446	set scale [GetHeightmapScale]
1447	# Have to set the datasets individually because we are
1448	# tracking them in _comp2scale.
1449	foreach dataset [CurrentDatasets -all] {
1450	SendCmd "heightmap heightscale $scale $dataset"
1451	set _comp2scale($dataset) $scale
1452	}
1453	ResetAxes
1454	}
1455	}
1456	"isHeightmap" {
1457	set bool $_settings(isHeightmap)
1458	set c $itk_component(view)
1459	StartBufferingCommands
1460	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1461	if { $bool } {
1462	set _settings(heightmapScale) 50
1463	set _settings(opacity) $_settings(saveOpacity)
1464	set _settings(lighting) $_settings(saveLighting)
1465	set _settings(outline) 0
1466	} else {
1467	set _settings(heightmapScale) 0
1468	set _settings(lighting) 0
1469	set _settings(opacity) 100
1470	set _settings(outline) $_settings(saveOutline)
1471	}
1472	AdjustSetting lighting
1473	AdjustSetting opacity
1474	AdjustSetting outline
1475	set scale [GetHeightmapScale]
1476	# Have to set the datasets individually because we are
1477	# tracking them in _comp2scale.
1478	foreach dataset [CurrentDatasets -all] {
1479	SendCmd "heightmap heightscale $scale $dataset"
1480	set _comp2scale($dataset) $scale
1481	}
1482	if { $bool } {
1483	$itk_component(lighting) configure -state normal
1484	$itk_component(opacity) configure -state normal
1485	$itk_component(scale) configure -state normal
1486	$itk_component(opacity_l) configure -state normal
1487	$itk_component(scale_l) configure -state normal
1488	$itk_component(outline) configure -state disabled
1489	if {$_view(ortho)} {
1490	SendCmd "camera mode ortho"
1491	} else {
1492	SendCmd "camera mode persp"
1493	}
1494	} else {
1495	$itk_component(lighting) configure -state disabled
1496	$itk_component(opacity) configure -state disabled
1497	$itk_component(scale) configure -state disabled
1498	$itk_component(opacity_l) configure -state disabled
1499	$itk_component(scale_l) configure -state disabled
1500	$itk_component(outline) configure -state normal
1501	SendCmd "camera mode image"
1502	}
1503	if {$_settings(stretchToFit)} {
1504	if {$scale == 0} {
1505	SendCmd "camera aspect window"
1506	} else {
1507	SendCmd "camera aspect square"
1508	}
1509	}
1510	ResetAxes
1511	if { $bool } {
1512	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1513	$_arcball quaternion $q
1514	SendCmd "camera orient $q"
1515	} else {
1516	bind $c <ButtonPress-1> {}
1517	bind $c <B1-Motion> {}
1518	bind $c <ButtonRelease-1> {}
1519	}
1520	SendCmd "camera reset"
1521	# Fix the mouse bindings for rotation/panning and the
1522	# camera mode. Ideally we'd create a bindtag for these.
1523	if { $bool } {
1524	# Bindings for rotation via mouse
1525	bind $c <ButtonPress-1> \
1526	[itcl::code $this Rotate click %x %y]
1527	bind $c <B1-Motion> \
1528	[itcl::code $this Rotate drag %x %y]
1529	bind $c <ButtonRelease-1> \
1530	[itcl::code $this Rotate release %x %y]
1531	}
1532	StopBufferingCommands
1533	}
1534	"isolineColor" {
1535	set color [$itk_component(isolinecolor) value]
1536	if { $color == "none" } {
1537	if { $_settings(isolinesVisible) } {
1538	SendCmd "heightmap isolines 0"
1539	set _settings(isolinesVisible) 0
1540	}
1541	} else {
1542	if { !$_settings(isolinesVisible) } {
1543	SendCmd "heightmap isolines 1"
1544	set _settings(isolinesVisible) 1
1545	}
1546	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1547	}
1548	DrawLegend
1549	}
1550	"isolinesVisible" {
1551	set bool $_settings($what)
1552	SendCmd "heightmap isolines $bool"
1553	DrawLegend
1554	}
1555	"legendVisible" {
1556	if { !$_settings($what) } {
1557	$itk_component(view) delete legend
1558	}
1559	DrawLegend
1560	}
1561	"lighting" {
1562	if { $_settings(isHeightmap) } {
1563	set _settings(saveLighting) $_settings(lighting)
1564	set bool $_settings($what)
1565	SendCmd "heightmap lighting $bool"
1566	} else {
1567	SendCmd "heightmap lighting 0"
1568	}
1569	}
1570	"numIsolines" {
1571	set _changed(numIsolines) 1
1572	set _settings(numIsolines) [$itk_component(numisolines) value]
1573	set _currentNumIsolines $_settings(numIsolines)
1574	SendCmd "heightmap numcontours $_settings(numIsolines)"
1575	if {$_settings(colormapDiscrete)} {
1576	set numColors [expr $_settings(numIsolines) - 1]
1577	SendCmd "colormap res $numColors"
1578	EventuallyRequestLegend
1579	} else {
1580	DrawLegend
1581	}
1582	}
1583	"opacity" {
1584	set _changed(opacity) 1
1585	if { $_settings(isHeightmap) } {
1586	set _settings(saveOpacity) $_settings(opacity)
1587	set val $_settings(opacity)
1588	set sval [expr { 0.01 * double($val) }]
1589	SendCmd "heightmap opacity $sval"
1590	} else {
1591	SendCmd "heightmap opacity 1"
1592	}
1593	}
1594	"outline" {
1595	if { $_settings(isHeightmap) } {
1596	SendCmd "outline visible 0"
1597	} else {
1598	set _settings(saveOutline) $_settings(outline)
1599	set bool $_settings(outline)
1600	SendCmd "outline visible $bool"
1601	}
1602	}
1603	"stretchToFit" {
1604	set bool $_settings($what)
1605	if { $bool } {
1606	set heightScale [GetHeightmapScale]
1607	if {$heightScale == 0} {
1608	SendCmd "camera aspect window"
1609	} else {
1610	SendCmd "camera aspect square"
1611	}
1612	} else {
1613	SendCmd "camera aspect native"
1614	}
1615	}
1616	"wireframe" {
1617	set bool $_settings($what)
1618	SendCmd "heightmap wireframe $bool"
1619	}
1620	default {
1621	error "don't know how to fix $what"
1622	}
1623	}
1624	}
1625
1626	#
1627	# RequestLegend --
1628	#
1629	# Request a new legend from the server. The size of the legend
1630	# is determined from the height of the canvas.
1631	#
1632	# This should be called when
1633	# 1. A new current colormap is set.
1634	# 2. Window is resized.
1635	# 3. The limits of the data have changed. (Just need a redraw).
1636	# 4. Number of isolines have changed. (Just need a redraw).
1637	# 5. Legend becomes visible (Just need a redraw).
1638	#
1639	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1640	set _legendPending 0
1641	set font "Arial 8"
1642	set w 12
1643	set lineht [font metrics $font -linespace]
1644	# color ramp height = (canvas height) - (min and max value lines) - 2
1645	set h [expr {$_height - 2 * ($lineht + 2)}]
1646	set _legendHeight $h
1647
1648	set fname $_curFldName
1649	if { [string match "component*" $fname] } {
1650	set title ""
1651	} else {
1652	if { [info exists _fields($fname)] } {
1653	foreach { title units } $_fields($fname) break
1654	if { $units != "" } {
1655	set title [format "%s (%s)" $title $units]
1656	}
1657	} else {
1658	set title $fname
1659	}
1660	}
1661	# If there's a title too, substract one more line
1662	if { $title != "" } {
1663	incr h -$lineht
1664	}
1665	if { $h < 1} {
1666	return
1667	}
1668	# Set the legend on the first heightmap dataset.
1669	if { $_currentColormap != "" } {
1670	set cmap $_currentColormap
1671	SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1672	#SendCmd "heightmap colormode scalar $_curFldName"
1673	#SendCmd "dataset scalar $_curFldName"
1674	}
1675	}
1676
1677	#
1678	# ResetAxes --
1679	#
1680	# Set axis z bounds and range
1681	#
1682	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1683	if { ![info exists _limits($_curFldName)]} {
1684	SendCmd "dataset maprange all"
1685	SendCmd "axis autorange z on"
1686	SendCmd "axis autobounds z on"
1687	return
1688	}
1689	foreach { xmin xmax } $_limits(x) break
1690	foreach { ymin ymax } $_limits(y) break
1691	foreach { vmin vmax } $_limits($_curFldName) break
1692
1693	global tcl_precision
1694	set tcl_precision 17
1695	set xr [expr $xmax - $xmin]
1696	set yr [expr $ymax - $ymin]
1697	set vr [expr $vmax - $vmin]
1698	set r [expr ($yr > $xr) ? $yr : $xr]
1699	if { $vr < 1.0e-17 } {
1700	set dataScale 1.0
1701	} else {
1702	set dataScale [expr $r / $vr]
1703	}
1704	set heightScale [GetHeightmapScale]
1705	set bmin [expr $heightScale * $dataScale * $vmin]
1706	set bmax [expr $heightScale * $dataScale * $vmax]
1707	if {$heightScale > 0} {
1708	set zpos [expr - $bmin]
1709	SendCmd "heightmap pos 0 0 $zpos"
1710	} else {
1711	SendCmd "heightmap pos 0 0 0"
1712	}
1713	set bmax [expr $bmax - $bmin]
1714	set bmin 0
1715	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1716	SendCmd "axis bounds z $bmin $bmax"
1717	SendCmd "axis range z $_limits($_curFldName)"
1718	}
1719
1720	#
1721	# SetCurrentColormap --
1722	#
1723	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1724	# Keep track of the colormaps that we build.
1725	if { ![info exists _colormaps($name)] } {
1726	BuildColormap $name
1727	set _colormaps($name) 1
1728	}
1729	set _currentColormap $name
1730	SendCmd "heightmap colormap $_currentColormap"
1731	}
1732
1733
1734	#
1735	# BuildColormap --
1736	#
1737	# Build the designated colormap on the server.
1738	#
1739	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1740	set cmap [ColorsToColormap $name]
1741	if { [llength $cmap] == 0 } {
1742	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1743	}
1744	set wmap "0.0 1.0 1.0 1.0"
1745	SendCmd "colormap add $name { $cmap } { $wmap }"
1746	}
1747
1748	# ----------------------------------------------------------------------
1749	# CONFIGURATION OPTION: -mode
1750	# ----------------------------------------------------------------------
1751	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1752	switch -- $itk_option(-mode) {
1753	"heightmap" {
1754	set _settings(isHeightmap) 1
1755	}
1756	"contour" {
1757	set _settings(isHeightmap) 0
1758	}
1759	default {
1760	error "unknown mode settings \"$itk_option(-mode)\""
1761	}
1762	}
1763	AdjustSetting isHeightmap
1764	}
1765
1766	# ----------------------------------------------------------------------
1767	# CONFIGURATION OPTION: -plotbackground
1768	# ----------------------------------------------------------------------
1769	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1770	if { [isconnected] } {
1771	set rgb [Color2RGB $itk_option(-plotbackground)]
1772	SendCmd "screen bgcolor $rgb"
1773	$itk_component(view) configure -background $itk_option(-plotbackground)
1774	}
1775	}
1776
1777	# ----------------------------------------------------------------------
1778	# CONFIGURATION OPTION: -plotforeground
1779	# ----------------------------------------------------------------------
1780	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1781	if { [isconnected] } {
1782	set rgb [Color2RGB $itk_option(-plotforeground)]
1783	SendCmd "outline color $rgb"
1784	SendCmd "axis color all $rgb"
1785	}
1786	}
1787
1788	itcl::body Rappture::VtkHeightmapViewer::limits3 { dataobj } {
1789	lappend limits x [$dataobj limits x]
1790	lappend limits y [$dataobj limits y]
1791	if { [catch { $dataobj limits $_curFldName } vlim] != 0 } {
1792	set vlim [$dataobj limits v]
1793	}
1794	lappend limits v $vlim
1795	return $limits
1796	}
1797
1798	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1799
1800	set fg [option get $itk_component(hull) font Font]
1801	#set bfg [option get $itk_component(hull) boldFont Font]
1802
1803	set inner [$itk_component(main) insert end \
1804	-title "Contour/Surface Settings" \
1805	-icon [Rappture::icon contour2]]
1806	$inner configure -borderwidth 4
1807
1808	checkbutton $inner.legend \
1809	-text "Legend" \
1810	-variable [itcl::scope _settings(legendVisible)] \
1811	-command [itcl::code $this AdjustSetting legendVisible] \
1812	-font "Arial 9"
1813
1814	checkbutton $inner.wireframe \
1815	-text "Wireframe" \
1816	-variable [itcl::scope _settings(wireframe)] \
1817	-command [itcl::code $this AdjustSetting wireframe] \
1818	-font "Arial 9"
1819
1820	itk_component add lighting {
1821	checkbutton $inner.lighting \
1822	-text "Enable Lighting" \
1823	-variable [itcl::scope _settings(lighting)] \
1824	-command [itcl::code $this AdjustSetting lighting] \
1825	-font "Arial 9"
1826	} {
1827	ignore -font
1828	}
1829	checkbutton $inner.edges \
1830	-text "Edges" \
1831	-variable [itcl::scope _settings(edges)] \
1832	-command [itcl::code $this AdjustSetting edges] \
1833	-font "Arial 9"
1834
1835	itk_component add outline {
1836	checkbutton $inner.outline \
1837	-text "Outline" \
1838	-variable [itcl::scope _settings(outline)] \
1839	-command [itcl::code $this AdjustSetting outline] \
1840	-font "Arial 9"
1841	} {
1842	ignore -font
1843	}
1844	checkbutton $inner.stretch \
1845	-text "Stretch to fit" \
1846	-variable [itcl::scope _settings(stretchToFit)] \
1847	-command [itcl::code $this AdjustSetting stretchToFit] \
1848	-font "Arial 9"
1849
1850	checkbutton $inner.isolines \
1851	-text "Isolines" \
1852	-variable [itcl::scope _settings(isolinesVisible)] \
1853	-command [itcl::code $this AdjustSetting isolinesVisible] \
1854	-font "Arial 9"
1855
1856	checkbutton $inner.colormapDiscrete \
1857	-text "Discrete Colormap" \
1858	-variable [itcl::scope _settings(colormapDiscrete)] \
1859	-command [itcl::code $this AdjustSetting colormapDiscrete] \
1860	-font "Arial 9"
1861
1862	itk_component add field_l {
1863	label $inner.field_l -text "Field" -font "Arial 9"
1864	} {
1865	ignore -font
1866	}
1867	itk_component add field {
1868	Rappture::Combobox $inner.field -width 10 -editable no
1869	}
1870	bind $inner.field <<Value>> \
1871	[itcl::code $this AdjustSetting field]
1872
1873	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1874	itk_component add colormap {
1875	Rappture::Combobox $inner.colormap -width 10 -editable no
1876	}
1877	$inner.colormap choices insert end \
1878	"BCGYR" "BCGYR" \
1879	"BGYOR" "BGYOR" \
1880	"blue" "blue" \
1881	"blue-to-brown" "blue-to-brown" \
1882	"blue-to-orange" "blue-to-orange" \
1883	"blue-to-grey" "blue-to-grey" \
1884	"green-to-magenta" "green-to-magenta" \
1885	"greyscale" "greyscale" \
1886	"nanohub" "nanohub" \
1887	"rainbow" "rainbow" \
1888	"spectral" "spectral" \
1889	"ROYGB" "ROYGB" \
1890	"RYGCB" "RYGCB" \
1891	"brown-to-blue" "brown-to-blue" \
1892	"grey-to-blue" "grey-to-blue" \
1893	"orange-to-blue" "orange-to-blue" \
1894	"none" "none"
1895
1896	$itk_component(colormap) value "BCGYR"
1897	bind $inner.colormap <<Value>> \
1898	[itcl::code $this AdjustSetting colormap]
1899
1900	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1901	itk_component add isolinecolor {
1902	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1903	}
1904	$inner.isolinecolor choices insert end \
1905	"black" "black" \
1906	"blue" "blue" \
1907	"cyan" "cyan" \
1908	"green" "green" \
1909	"grey" "grey" \
1910	"magenta" "magenta" \
1911	"orange" "orange" \
1912	"red" "red" \
1913	"white" "white" \
1914	"none" "none"
1915
1916	$itk_component(isolinecolor) value "black"
1917	bind $inner.isolinecolor <<Value>> \
1918	[itcl::code $this AdjustSetting isolineColor]
1919
1920	label $inner.background_l -text "Background Color" -font "Arial 9"
1921	itk_component add background {
1922	Rappture::Combobox $inner.background -width 10 -editable no
1923	}
1924	$inner.background choices insert end \
1925	"black" "black" \
1926	"white" "white" \
1927	"grey" "grey"
1928
1929	$itk_component(background) value "white"
1930	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1931
1932	itk_component add opacity_l {
1933	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1934	} {
1935	ignore -font
1936	}
1937	itk_component add opacity {
1938	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1939	-variable [itcl::scope _settings(opacity)] \
1940	-showvalue off \
1941	-command [itcl::code $this AdjustSetting opacity]
1942	}
1943	itk_component add scale_l {
1944	label $inner.scale_l -text "Scale" -font "Arial 9"
1945	} {
1946	ignore -font
1947	}
1948	itk_component add scale {
1949	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1950	-variable [itcl::scope _settings(heightmapScale)] \
1951	-showvalue off \
1952	-command [itcl::code $this AdjustSetting heightmapScale]
1953	}
1954	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1955	itk_component add numisolines {
1956	Rappture::Spinint $inner.numisolines \
1957	-min 2 -max 50 -font "arial 9"
1958	}
1959	$itk_component(numisolines) value $_settings(numIsolines)
1960	bind $itk_component(numisolines) <<Value>> \
1961	[itcl::code $this AdjustSetting numIsolines]
1962
1963	frame $inner.separator1 -height 2 -relief sunken -bd 1
1964	frame $inner.separator2 -height 2 -relief sunken -bd 1
1965
1966	blt::table $inner \
1967	0,0 $inner.field_l -anchor w -pady 2 \
1968	0,1 $inner.field -anchor w -pady 2 -fill x \
1969	1,0 $inner.colormap_l -anchor w -pady 2 \
1970	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1971	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
1972	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
1973	3,0 $inner.background_l -anchor w -pady 2 \
1974	3,1 $inner.background -anchor w -pady 2 -fill x \
1975	4,0 $inner.numisolines_l -anchor w -pady 2 \
1976	4,1 $inner.numisolines -anchor w -pady 2 \
1977	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
1978	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1979	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1980	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
1981	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
1982	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
1983	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
1984	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1985	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
1986	14,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1987	15,0 $inner.opacity_l -anchor w -pady 2 \
1988	15,1 $inner.opacity -fill x -pady 2 \
1989	16,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
1990	16,1 $inner.scale -fill x -pady 2 -cspan 2 \
1991
1992	blt::table configure $inner r* c* -resize none
1993	blt::table configure $inner r17 c1 -resize expand
1994	}
1995
1996	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
1997
1998	set fg [option get $itk_component(hull) font Font]
1999	#set bfg [option get $itk_component(hull) boldFont Font]
2000
2001	set inner [$itk_component(main) insert end \
2002	-title "Axis Settings" \
2003	-icon [Rappture::icon axis2]]
2004	$inner configure -borderwidth 4
2005
2006	checkbutton $inner.visible \
2007	-text "Axes" \
2008	-variable [itcl::scope _settings(axisVisible)] \
2009	-command [itcl::code $this AdjustSetting axisVisible] \
2010	-font "Arial 9"
2011	checkbutton $inner.labels \
2012	-text "Axis Labels" \
2013	-variable [itcl::scope _settings(axisLabels)] \
2014	-command [itcl::code $this AdjustSetting axisLabels] \
2015	-font "Arial 9"
2016	label $inner.grid_l -text "Grid" -font "Arial 9"
2017	checkbutton $inner.xgrid \
2018	-text "X" \
2019	-variable [itcl::scope _settings(axisXGrid)] \
2020	-command [itcl::code $this AdjustSetting axisXGrid] \
2021	-font "Arial 9"
2022	checkbutton $inner.ygrid \
2023	-text "Y" \
2024	-variable [itcl::scope _settings(axisYGrid)] \
2025	-command [itcl::code $this AdjustSetting axisYGrid] \
2026	-font "Arial 9"
2027	checkbutton $inner.zgrid \
2028	-text "Z" \
2029	-variable [itcl::scope _settings(axisZGrid)] \
2030	-command [itcl::code $this AdjustSetting axisZGrid] \
2031	-font "Arial 9"
2032	checkbutton $inner.minorticks \
2033	-text "Minor Ticks" \
2034	-variable [itcl::scope _settings(axisMinorTicks)] \
2035	-command [itcl::code $this AdjustSetting axisMinorTicks] \
2036	-font "Arial 9"
2037
2038
2039	label $inner.mode_l -text "Mode" -font "Arial 9"
2040
2041	itk_component add axisflymode {
2042	Rappture::Combobox $inner.mode -width 10 -editable no
2043	}
2044	$inner.mode choices insert end \
2045	"static_triad" "static" \
2046	"closest_triad" "closest" \
2047	"furthest_triad" "furthest" \
2048	"outer_edges" "outer"
2049	$itk_component(axisflymode) value "static"
2050	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlymode]
2051
2052	blt::table $inner \
2053	0,0 $inner.visible -anchor w -cspan 4 \
2054	1,0 $inner.labels -anchor w -cspan 4 \
2055	2,0 $inner.minorticks -anchor w -cspan 4 \
2056	4,0 $inner.grid_l -anchor w \
2057	4,1 $inner.xgrid -anchor w \
2058	4,2 $inner.ygrid -anchor w \
2059	4,3 $inner.zgrid -anchor w \
2060	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2061	5,1 $inner.mode -fill x -cspan 3
2062
2063	blt::table configure $inner r* c* -resize none
2064	blt::table configure $inner r7 c6 -resize expand
2065	blt::table configure $inner r3 -height 0.125i
2066	}
2067
2068
2069	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2070	set inner [$itk_component(main) insert end \
2071	-title "Camera Settings" \
2072	-icon [Rappture::icon camera]]
2073	$inner configure -borderwidth 4
2074
2075	label $inner.view_l -text "view" -font "Arial 9"
2076	set f [frame $inner.view]
2077	foreach side { front back left right top bottom } {
2078	button $f.$side -image [Rappture::icon view$side] \
2079	-command [itcl::code $this SetOrientation $side]
2080	Rappture::Tooltip::for $f.$side "Change the view to $side"
2081	pack $f.$side -side left
2082	}
2083
2084	blt::table $inner \
2085	0,0 $inner.view_l -anchor e -pady 2 \
2086	0,1 $inner.view -anchor w -pady 2
2087
2088	set labels { qx qy qz qw xpan ypan zoom }
2089	set row 1
2090	foreach tag $labels {
2091	label $inner.${tag}label -text $tag -font "Arial 9"
2092	entry $inner.${tag} -font "Arial 9" -bg white \
2093	-textvariable [itcl::scope _view($tag)]
2094	bind $inner.${tag} <Return> \
2095	[itcl::code $this camera set ${tag}]
2096	bind $inner.${tag} <KP_Enter> \
2097	[itcl::code $this camera set ${tag}]
2098	blt::table $inner \
2099	$row,0 $inner.${tag}label -anchor e -pady 2 \
2100	$row,1 $inner.${tag} -anchor w -pady 2
2101	blt::table configure $inner r$row -resize none
2102	incr row
2103	}
2104	checkbutton $inner.ortho \
2105	-text "Orthographic Projection" \
2106	-variable [itcl::scope _view(ortho)] \
2107	-command [itcl::code $this camera set ortho] \
2108	-font "Arial 9"
2109	blt::table $inner \
2110	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2111	blt::table configure $inner r$row -resize none
2112	incr row
2113
2114	blt::table configure $inner c* r* -resize none
2115	blt::table configure $inner c2 -resize expand
2116	blt::table configure $inner r$row -resize expand
2117	}
2118
2119	#
2120	# camera --
2121	#
2122	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2123	switch -- $option {
2124	"show" {
2125	puts [array get _view]
2126	}
2127	"set" {
2128	set who [lindex $args 0]
2129	set x $_view($who)
2130	set code [catch { string is double $x } result]
2131	if { $code != 0 \|\| !$result } {
2132	return
2133	}
2134	switch -- $who {
2135	"ortho" {
2136	if {$_view(ortho)} {
2137	SendCmd "camera mode ortho"
2138	} else {
2139	SendCmd "camera mode persp"
2140	}
2141	}
2142	"xpan" - "ypan" {
2143	PanCamera
2144	}
2145	"qx" - "qy" - "qz" - "qw" {
2146	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2147	$_arcball quaternion $q
2148	EventuallyRotate $q
2149	}
2150	"zoom" {
2151	SendCmd "camera zoom $_view(zoom)"
2152	}
2153	}
2154	}
2155	}
2156	}
2157
2158	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2159	set bytes ""
2160	foreach dataobj [get] {
2161	foreach comp [$dataobj components] {
2162	set tag $dataobj-$comp
2163	#set contents [ConvertToVtkData $dataobj $comp]
2164	set contents [$dataobj vtkdata $comp]
2165	append bytes "$contents\n\n"
2166	}
2167	}
2168	return [list .vtk $bytes]
2169	}
2170
2171	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2172	if { [image width $_image(download)] > 0 &&
2173	[image height $_image(download)] > 0 } {
2174	set bytes [$_image(download) data -format "jpeg -quality 100"]
2175	set bytes [Rappture::encoding::decode -as b64 $bytes]
2176	return [list .jpg $bytes]
2177	}
2178	return ""
2179	}
2180
2181	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2182	Rappture::Balloon $popup \
2183	-title "[Rappture::filexfer::label downloadWord] as..."
2184	set inner [$popup component inner]
2185	label $inner.summary -text "" -anchor w
2186	radiobutton $inner.vtk_button -text "VTK data file" \
2187	-variable [itcl::scope _downloadPopup(format)] \
2188	-font "Arial 9 " \
2189	-value vtk
2190	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2191	radiobutton $inner.image_button -text "Image File" \
2192	-variable [itcl::scope _downloadPopup(format)] \
2193	-font "Arial 9 " \
2194	-value image
2195	Rappture::Tooltip::for $inner.image_button \
2196	"Save as digital image."
2197
2198	button $inner.ok -text "Save" \
2199	-highlightthickness 0 -pady 2 -padx 3 \
2200	-command $command \
2201	-compound left \
2202	-image [Rappture::icon download]
2203
2204	button $inner.cancel -text "Cancel" \
2205	-highlightthickness 0 -pady 2 -padx 3 \
2206	-command [list $popup deactivate] \
2207	-compound left \
2208	-image [Rappture::icon cancel]
2209
2210	blt::table $inner \
2211	0,0 $inner.summary -cspan 2 \
2212	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2213	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2214	4,1 $inner.cancel -width .9i -fill y \
2215	4,0 $inner.ok -padx 2 -width .9i -fill y
2216	blt::table configure $inner r3 -height 4
2217	blt::table configure $inner r4 -pady 4
2218	raise $inner.image_button
2219	$inner.vtk_button invoke
2220	return $inner
2221	}
2222
2223	#
2224	# SetObjectStyle --
2225	#
2226	# Set the style of the heightmap/contour object. This gets calls
2227	# for each dataset once as it is loaded. It can overridden by
2228	# the user controls.
2229	#
2230	#
2231	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2232	# Parse style string.
2233	set tag $dataobj-$comp
2234	array set style {
2235	-color BCGYR
2236	-opacity 100
2237	-levels 10
2238	}
2239	set stylelist [$dataobj style $comp]
2240	if { $stylelist != "" } {
2241	array set style $stylelist
2242	}
2243	# This is too complicated. We want to set the colormap, number of
2244	# isolines and opacity for the dataset. They can be the default values,
2245	# the style hints loaded with the dataset, or set by user controls. As
2246	# datasets get loaded, they first use the defaults that are overidden
2247	# by the style hints. If the user changes the global controls, then that
2248	# overrides everything else. I don't know what it means when global
2249	# controls are specified as style hints by each dataset. It complicates
2250	# the code to handle aberrant cases.
2251
2252	if { $_changed(opacity) } {
2253	set style(-opacity) $_settings(opacity)
2254	}
2255	if { $_changed(numIsolines) } {
2256	set style(-levels) $_settings(numIsolines)
2257	}
2258	if { $_changed(colormap) } {
2259	set style(-color) $_settings(colormap)
2260	}
2261	if { $_currentColormap == "" } {
2262	$itk_component(colormap) value $style(-color)
2263	}
2264	set _currentOpacity $style(-opacity)
2265	if { $_currentNumIsolines != $style(-levels) } {
2266	set _currentNumIsolines $style(-levels)
2267	set _settings(numIsolines) $_currentNumIsolines
2268	$itk_component(numisolines) value $_currentNumIsolines
2269	DrawLegend
2270	}
2271	SendCmd "outline add $tag"
2272	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2273	SendCmd "outline visible $_settings(outline) $tag"
2274	set scale [GetHeightmapScale]
2275	SendCmd "heightmap add numcontours $_currentNumIsolines $scale $tag"
2276	set _comp2scale($tag) $_settings(heightmapScale)
2277	SendCmd "heightmap edges $_settings(edges) $tag"
2278	SendCmd "heightmap wireframe $_settings(wireframe) $tag"
2279	SetCurrentColormap $style(-color)
2280	set color [$itk_component(isolinecolor) value]
2281	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2282	SendCmd "heightmap lighting $_settings(isHeightmap) $tag"
2283	}
2284
2285	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2286	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2287	return 0
2288	}
2289	return 1
2290	}
2291
2292	# ----------------------------------------------------------------------
2293	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2294	#
2295	# Invoked automatically whenever the "legend" command comes in from
2296	# the rendering server. Indicates that binary image data with the
2297	# specified <size> will follow.
2298	# ----------------------------------------------------------------------
2299	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2300	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2301	if { [isconnected] } {
2302	set bytes [ReceiveBytes $size]
2303	if { ![info exists _image(legend)] } {
2304	set _image(legend) [image create photo]
2305	}
2306	$_image(legend) configure -data $bytes
2307	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2308	if { [catch {DrawLegend} errs] != 0 } {
2309	global errorInfo
2310	puts stderr "errs=$errs errorInfo=$errorInfo"
2311	}
2312	}
2313	}
2314
2315	#
2316	# DrawLegend --
2317	#
2318	# Draws the legend in the own canvas on the right side of the plot area.
2319	#
2320	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2321	set fname $_curFldName
2322	set c $itk_component(view)
2323	set w [winfo width $c]
2324	set h [winfo height $c]
2325	set font "Arial 8"
2326	set lineht [font metrics $font -linespace]
2327
2328	if { [string match "component*" $fname] } {
2329	set title ""
2330	} else {
2331	if { [info exists _fields($fname)] } {
2332	foreach { title units } $_fields($fname) break
2333	if { $units != "" } {
2334	set title [format "%s (%s)" $title $units]
2335	}
2336	} else {
2337	set title $fname
2338	}
2339	}
2340	set x [expr $w - 2]
2341	if { !$_settings(legendVisible) } {
2342	$c delete legend
2343	return
2344	}
2345	if { [$c find withtag "legend"] == "" } {
2346	set y 2
2347	# If there's a legend title, create a text item for the title.
2348	$c create text $x $y \
2349	-anchor ne \
2350	-fill $itk_option(-plotforeground) -tags "title legend" \
2351	-font $font
2352	$c create text $x $y \
2353	-anchor ne \
2354	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2355	-font $font
2356	incr y $lineht
2357	$c create image $x $y \
2358	-anchor ne \
2359	-image $_image(legend) -tags "colormap legend"
2360	$c create rectangle $x $y 1 1 \
2361	-fill "" -outline "" -tags "sensor legend"
2362	$c create text $x [expr {$h-2}] \
2363	-anchor se \
2364	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2365	-font $font
2366	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2367	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2368	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2369	}
2370	$c delete isoline
2371	set x2 $x
2372	set iw [image width $_image(legend)]
2373	set ih [image height $_image(legend)]
2374	set x1 [expr $x2 - ($iw*12)/10]
2375	set color [$itk_component(isolinecolor) value]
2376
2377	# Draw the isolines on the legend.
2378	if { $color != "none" && [info exists _limits($_curFldName)] &&
2379	$_settings(isolinesVisible) && $_currentNumIsolines > 0 } {
2380	set pixels [blt::vector create \#auto]
2381	set values [blt::vector create \#auto]
2382	set range [image height $_image(legend)]
2383	# Order of pixels is max to min (max is at top of legend).
2384	$pixels seq $ih 0 $_currentNumIsolines
2385
2386	set offset [expr 2 + $lineht]
2387	# If there's a legend title, increase the offset by the line height.
2388	if { $title != "" } {
2389	incr offset $lineht
2390	}
2391	$pixels expr {round($pixels + $offset)}
2392	# Order of values is min to max.
2393	foreach { vmin vmax } $_limits($_curFldName) break
2394	$values seq $vmin $vmax $_currentNumIsolines
2395	set tags "isoline legend"
2396	array unset _isolines
2397	foreach pos [$pixels range 0 end] value [$values range end 0] {
2398	set y1 [expr int($pos)]
2399	for { set off 0 } { $off < 3 } { incr off } {
2400	set _isolines([expr $y1 + $off]) $value
2401	set _isolines([expr $y1 - $off]) $value
2402	}
2403	set id [$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags]
2404	}
2405	blt::vector destroy $pixels $values
2406	}
2407
2408	$c bind title <ButtonPress> [itcl::code $this Combo post]
2409	$c bind title <Enter> [itcl::code $this Combo activate]
2410	$c bind title <Leave> [itcl::code $this Combo deactivate]
2411	# Reset the item coordinates according the current size of the plot.
2412	if { [info exists _limits($_curFldName)] } {
2413	foreach { vmin vmax } $_limits($_curFldName) break
2414	$c itemconfigure vmin -text [format %g $vmin]
2415	$c itemconfigure vmax -text [format %g $vmax]
2416	}
2417	set y 2
2418	# If there's a legend title, move the title to the correct position
2419	if { $title != "" } {
2420	$c itemconfigure title -text $title
2421	$c coords title $x $y
2422	incr y $lineht
2423	}
2424	$c coords vmax $x $y
2425	incr y $lineht
2426	$c coords colormap $x $y
2427	set ix [image width $_image(legend)]
2428	set ih [image height $_image(legend)]
2429	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2430	$c raise sensor
2431	$c coords vmin $x [expr {$h - 2}]
2432	}
2433
2434	#
2435	# EnterLegend --
2436	#
2437	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2438	SetLegendTip $x $y
2439	}
2440
2441	#
2442	# MotionLegend --
2443	#
2444	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2445	Rappture::Tooltip::tooltip cancel
2446	set c $itk_component(view)
2447	set cw [winfo width $c]
2448	set ch [winfo height $c]
2449	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2450	SetLegendTip $x $y
2451	}
2452	}
2453
2454	#
2455	# LeaveLegend --
2456	#
2457	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2458	Rappture::Tooltip::tooltip cancel
2459	.rappturetooltip configure -icon ""
2460	}
2461
2462	#
2463	# SetLegendTip --
2464	#
2465	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2466	set fname $_curFldName
2467	set c $itk_component(view)
2468	set w [winfo width $c]
2469	set h [winfo height $c]
2470	set font "Arial 8"
2471	set lineht [font metrics $font -linespace]
2472
2473	set ih [image height $_image(legend)]
2474	# Subtract off the offset of the color ramp from the top of the canvas
2475	set iy [expr $y - ($lineht + 2)]
2476
2477	if { [string match "component*" $fname] } {
2478	set title ""
2479	} else {
2480	if { [info exists _fields($fname)] } {
2481	foreach { title units } $_fields($fname) break
2482	if { $units != "" } {
2483	set title [format "%s (%s)" $title $units]
2484	}
2485	} else {
2486	set title $fname
2487	}
2488	}
2489	# If there's a legend title, increase the offset by the line height.
2490	if { $title != "" } {
2491	incr iy -$lineht
2492	}
2493
2494	# Make a swatch of the selected color
2495	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2496	return
2497	}
2498
2499	if { ![info exists _image(swatch)] } {
2500	set _image(swatch) [image create photo -width 24 -height 24]
2501	}
2502	set color [eval format "\#%02x%02x%02x" $pixel]
2503	$_image(swatch) put black -to 0 0 23 23
2504	$_image(swatch) put $color -to 1 1 22 22
2505
2506	# Compute the value of the point
2507	if { [info exists _limits($fname)] } {
2508	foreach { vmin vmax } $_limits($fname) break
2509	set t [expr 1.0 - (double($iy) / double($ih-1))]
2510	set value [expr $t * ($vmax - $vmin) + $vmin]
2511	} else {
2512	set value 0.0
2513	}
2514	set tipx [expr $x + 15]
2515	set tipy [expr $y - 5]
2516	.rappturetooltip configure -icon $_image(swatch)
2517	if { [info exists _isolines($y)] } {
2518	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2519	} else {
2520	Rappture::Tooltip::text $c [format "$title %g" $value]
2521	}
2522	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2523	}
2524
2525	# ----------------------------------------------------------------------
2526	# USAGE: _dropdown post
2527	# USAGE: _dropdown unpost
2528	# USAGE: _dropdown select
2529	#
2530	# Used internally to handle the dropdown list for this combobox. The
2531	# post/unpost options are invoked when the list is posted or unposted
2532	# to manage the relief of the controlling button. The select option
2533	# is invoked whenever there is a selection from the list, to assign
2534	# the value back to the gauge.
2535	# ----------------------------------------------------------------------
2536	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2537	set c $itk_component(view)
2538	switch -- $option {
2539	post {
2540	foreach { x1 y1 x2 y2 } [$c bbox title] break
2541	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2542	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2543	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2544	tk_popup $itk_component(fieldmenu) $x $y
2545	}
2546	activate {
2547	$c itemconfigure title -fill red
2548	}
2549	deactivate {
2550	$c itemconfigure title -fill $itk_option(-plotforeground)
2551	}
2552	invoke {
2553	$itk_component(field) value $_curFldLabel
2554	AdjustSetting field
2555	}
2556	default {
2557	error "bad option \"$option\": should be post, unpost, select"
2558	}
2559	}
2560	}
2561
2562	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2563	if { $_settings(isHeightmap) } {
2564	set val $_settings(heightmapScale)
2565	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2566	return $sval
2567	}
2568	set sval 0
2569	}
2570
2571	itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2572	array set positions {
2573	front "0.707107 0.707107 0 0"
2574	back "0 0 0.707107 0.707107"
2575	left "0.5 0.5 -0.5 -0.5"
2576	right "0.5 0.5 0.5 0.5"
2577	top "1 0 0 0"
2578	bottom "0 1 0 0"
2579	}
2580	foreach name { qw qx qy qz } value $positions($side) {
2581	set _view($name) $value
2582	}
2583	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2584	$_arcball quaternion $q
2585	SendCmd "camera orient $q"
2586	SendCmd "camera reset"
2587	set _view(xpan) 0
2588	set _view(ypan) 0
2589	set _view(zoom) 1.0
2590	}

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