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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 3447

Last change on this file since 3447 was 3447, checked in by ldelgass, 12 years ago
Fix outline with sequence of contours
File size: 81.4 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 colors }
87	private method ResetColormap { color }
88	private method BuildContourTab {}
89	private method BuildDownloadPopup { widget command }
90	private method Combo { option }
91	private method ConvertToVtkData { dataobj comp }
92	private method DrawLegend {}
93	private method EnterLegend { x y }
94	private method EventuallyRequestLegend {}
95	private method EventuallyResize { w h }
96	private method EventuallyRotate { q }
97	private method GetImage { args }
98	private method GetVtkData { args }
99	private method IsValidObject { dataobj }
100	private method LeaveLegend {}
101	private method MotionLegend { x y }
102	private method PanCamera {}
103	private method RequestLegend {}
104	private method SetCurrentColormap { stylelist }
105	private method SetLegendTip { x y }
106	private method SetObjectStyle { dataobj comp }
107	private method GetHeightmapScale {}
108	private method ResetAxes {}
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
124	private variable _click ; # info used for rotate operations
125	private variable _limits ; # Holds overall limits for all dataobjs
126	# using the viewer.
127	private variable _view ; # view params for 3D view
128	private variable _settings
129	private variable _initialStyle ""; # First found style in dataobjects.
130	private variable _reset 1; # Indicates if camera needs to be reset
131	# to starting position.
132	private variable _beforeConnect 1; # Indicates if camera needs to be reset
133	# to starting position.
134
135	private variable _first "" ; # This is the topmost dataset.
136	private variable _start 0
137	private variable _isolines
138
139	common _downloadPopup; # download options from popup
140	private common _hardcopy
141	private variable _width 0
142	private variable _height 0
143	private variable _legendWidth 0
144	private variable _legendHeight 0
145	private variable _resizePending 0
146	private variable _numIsolinesPending 0
147	private variable _rotatePending 0
148	private variable _legendPending 0
149	private variable _fieldNames {}
150	private variable _fields
151	private variable _curFldName ""
152	private variable _curFldLabel ""
153	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
154	}
155
156	itk::usual VtkHeightmapViewer {
157	keep -background -foreground -cursor -font
158	keep -plotbackground -plotforeground -mode
159	}
160
161	# ----------------------------------------------------------------------
162	# CONSTRUCTOR
163	# ----------------------------------------------------------------------
164	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
165	set _serverType "vtkvis"
166
167	# Rebuild event
168	$_dispatcher register !rebuild
169	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
170
171	# Resize event
172	$_dispatcher register !resize
173	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
174
175	# Rotate event
176	$_dispatcher register !rotate
177	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
178
179	# Legend event
180	$_dispatcher register !legend
181	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
182
183	#
184	# Populate parser with commands handle incoming requests
185	#
186	$_parser alias image [itcl::code $this ReceiveImage]
187	$_parser alias dataset [itcl::code $this ReceiveDataset]
188	$_parser alias legend [itcl::code $this ReceiveLegend]
189	$_parser alias viserror [itcl::code $this ReceiveError]
190
191	# Initialize the view to some default parameters.
192	array set _view {
193	qw 0.36
194	qx 0.25
195	qy 0.50
196	qz 0.70
197	zoom 1.0
198	xpan 0
199	ypan 0
200	ortho 1
201	}
202	set _arcball [blt::arcball create 100 100]
203	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
204	$_arcball quaternion $q
205
206	array set _settings [subst {
207	axisFlymode "static"
208	axisMinorTicks 1
209	stretchToFit 0
210	axisLabels 1
211	axisVisible 1
212	axisXGrid 0
213	axisYGrid 0
214	axisZGrid 0
215	colormapVisible 1
216	edges 0
217	field "Default"
218	heightmapScale 50
219	isHeightmap 0
220	isolineColor black
221	isolinesVisible 1
222	legendVisible 1
223	lighting 1
224	saveLighting 1
225	numIsolines 10
226	opacity 100
227	outline 0
228	wireframe 0
229	saveOpacity 100
230	}]
231
232	itk_component add view {
233	canvas $itk_component(plotarea).view \
234	-highlightthickness 0 -borderwidth 0
235	} {
236	usual
237	ignore -highlightthickness -borderwidth -background
238	}
239
240	itk_component add fieldmenu {
241	menu $itk_component(plotarea).menu \
242	-relief flat \
243	-tearoff no
244	} {
245	usual
246	ignore -background -foreground -relief -tearoff
247	}
248	set c $itk_component(view)
249	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
250	bind $c <4> [itcl::code $this Zoom in 0.25]
251	bind $c <5> [itcl::code $this Zoom out 0.25]
252	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
253	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
254	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
255	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
256	bind $c <Enter> "focus %W"
257	bind $c <Control-F1> [itcl::code $this ToggleConsole]
258
259	# Fix the scrollregion in case we go off screen
260	$c configure -scrollregion [$c bbox all]
261
262	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
263	set _map(cwidth) -1
264	set _map(cheight) -1
265	set _map(zoom) 1.0
266	set _map(original) ""
267
268	set f [$itk_component(main) component controls]
269	itk_component add reset {
270	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
271	-highlightthickness 0 \
272	-image [Rappture::icon reset-view] \
273	-command [itcl::code $this Zoom reset]
274	} {
275	usual
276	ignore -highlightthickness
277	}
278	pack $itk_component(reset) -side top -padx 2 -pady 2
279	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
280
281	itk_component add zoomin {
282	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
283	-highlightthickness 0 \
284	-image [Rappture::icon zoom-in] \
285	-command [itcl::code $this Zoom in]
286	} {
287	usual
288	ignore -highlightthickness
289	}
290	pack $itk_component(zoomin) -side top -padx 2 -pady 2
291	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
292
293	itk_component add zoomout {
294	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
295	-highlightthickness 0 \
296	-image [Rappture::icon zoom-out] \
297	-command [itcl::code $this Zoom out]
298	} {
299	usual
300	ignore -highlightthickness
301	}
302	pack $itk_component(zoomout) -side top -padx 2 -pady 2
303	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
304
305	itk_component add mode {
306	Rappture::PushButton $f.mode \
307	-onimage [Rappture::icon surface] \
308	-offimage [Rappture::icon surface] \
309	-variable [itcl::scope _settings(isHeightmap)] \
310	-command [itcl::code $this AdjustSetting isHeightmap] \
311	}
312	Rappture::Tooltip::for $itk_component(mode) \
313	"Toggle the surface/contour on/off"
314	pack $itk_component(mode) -padx 2 -pady 2
315
316	if { [catch {
317	BuildContourTab
318	BuildAxisTab
319	BuildCameraTab
320	} errs] != 0 } {
321	global errorInfo
322	puts stderr "errs=$errs errorInfo=$errorInfo"
323	}
324	set _image(legend) [image create photo]
325
326	# Hack around the Tk panewindow. The problem is that the requested
327	# size of the 3d view isn't set until an image is retrieved from
328	# the server. So the panewindow uses the tiny size.
329	set w 10000
330	pack forget $itk_component(view)
331	blt::table $itk_component(plotarea) \
332	0,0 $itk_component(view) -fill both -reqwidth $w
333	blt::table configure $itk_component(plotarea) c1 -resize none
334
335	# Bindings for panning via mouse
336	bind $itk_component(view) <ButtonPress-2> \
337	[itcl::code $this Pan click %x %y]
338	bind $itk_component(view) <B2-Motion> \
339	[itcl::code $this Pan drag %x %y]
340	bind $itk_component(view) <ButtonRelease-2> \
341	[itcl::code $this Pan release %x %y]
342
343	#bind $itk_component(view) <ButtonRelease-3> \
344	# [itcl::code $this Pick %x %y]
345
346	# Bindings for panning via keyboard
347	bind $itk_component(view) <KeyPress-Left> \
348	[itcl::code $this Pan set -10 0]
349	bind $itk_component(view) <KeyPress-Right> \
350	[itcl::code $this Pan set 10 0]
351	bind $itk_component(view) <KeyPress-Up> \
352	[itcl::code $this Pan set 0 -10]
353	bind $itk_component(view) <KeyPress-Down> \
354	[itcl::code $this Pan set 0 10]
355	bind $itk_component(view) <Shift-KeyPress-Left> \
356	[itcl::code $this Pan set -2 0]
357	bind $itk_component(view) <Shift-KeyPress-Right> \
358	[itcl::code $this Pan set 2 0]
359	bind $itk_component(view) <Shift-KeyPress-Up> \
360	[itcl::code $this Pan set 0 -2]
361	bind $itk_component(view) <Shift-KeyPress-Down> \
362	[itcl::code $this Pan set 0 2]
363
364	# Bindings for zoom via keyboard
365	bind $itk_component(view) <KeyPress-Prior> \
366	[itcl::code $this Zoom out]
367	bind $itk_component(view) <KeyPress-Next> \
368	[itcl::code $this Zoom in]
369
370	bind $itk_component(view) <Enter> "focus $itk_component(view)"
371
372	if {[string equal "x11" [tk windowingsystem]]} {
373	# Bindings for zoom via mouse
374	bind $itk_component(view) <4> [itcl::code $this Zoom out]
375	bind $itk_component(view) <5> [itcl::code $this Zoom in]
376	}
377
378	set _image(download) [image create photo]
379
380	eval itk_initialize $args
381	Connect
382	set _beforeConnect 0
383	}
384
385	# ----------------------------------------------------------------------
386	# DESTRUCTOR
387	# ----------------------------------------------------------------------
388	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
389	Disconnect
390	image delete $_image(plot)
391	image delete $_image(download)
392	catch { blt::arcball destroy $_arcball }
393	}
394
395	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
396	if { $_width < 2 } {
397	set _width 500
398	}
399	if { $_height < 2 } {
400	set _height 500
401	}
402	set _start [clock clicks -milliseconds]
403	SendCmd "screen size [expr $_width - 20] $_height"
404
405	set font "Arial 8"
406	set lh [font metrics $font -linespace]
407	set h [expr {$_height - 2 * ($lh + 2)}]
408	if { $h != $_legendHeight } {
409	EventuallyRequestLegend
410	} else {
411	DrawLegend
412	}
413	set _resizePending 0
414	}
415
416	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
417	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
418	SendCmd "camera orient $q"
419	set _rotatePending 0
420	}
421
422	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
423	if { !$_legendPending } {
424	set _legendPending 1
425	$_dispatcher event -idle !legend
426	}
427	}
428
429	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
430	set _width $w
431	set _height $h
432	$_arcball resize $w $h
433	if { !$_resizePending } {
434	set _resizePending 1
435	$_dispatcher event -after 250 !resize
436	}
437	}
438
439	set rotate_delay 100
440
441	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
442	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
443	if { !$_rotatePending } {
444	set _rotatePending 1
445	global rotate_delay
446	$_dispatcher event -after $rotate_delay !rotate
447	}
448	}
449
450	# ----------------------------------------------------------------------
451	# USAGE: add <dataobj> ?<settings>?
452	#
453	# Clients use this to add a data object to the plot. The optional
454	# <settings> are used to configure the plot. Allowed settings are
455	# -color, -brightness, -width, -linestyle, and -raise.
456	# ----------------------------------------------------------------------
457	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
458	array set params {
459	-color auto
460	-width 1
461	-linestyle solid
462	-brightness 0
463	-raise 0
464	-description ""
465	-param ""
466	-type ""
467	}
468	array set params $settings
469	set params(-description) ""
470	set params(-param) ""
471	foreach {opt val} $settings {
472	if {![info exists params($opt)]} {
473	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
474	}
475	set params($opt) $val
476	}
477	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
478	# can't handle -autocolors yet
479	set params(-color) white
480	}
481	set pos [lsearch -exact $dataobj $_dlist]
482	if {$pos < 0} {
483	lappend _dlist $dataobj
484	}
485	set _obj2ovride($dataobj-color) $params(-color)
486	set _obj2ovride($dataobj-width) $params(-width)
487	set _obj2ovride($dataobj-raise) $params(-raise)
488	$_dispatcher event -idle !rebuild
489	}
490
491
492	# ----------------------------------------------------------------------
493	# USAGE: delete ?<dataobj1> <dataobj2> ...?
494	#
495	# Clients use this to delete a dataobj from the plot. If no dataobjs
496	# are specified, then all dataobjs are deleted. No data objects are
497	# deleted. They are only removed from the display list.
498	#
499	# ----------------------------------------------------------------------
500	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
501	if { [llength $args] == 0} {
502	set args $_dlist
503	}
504	# Delete all specified dataobjs
505	set changed 0
506	foreach dataobj $args {
507	set pos [lsearch -exact $_dlist $dataobj]
508	if { $pos < 0 } {
509	continue; # Don't know anything about it.
510	}
511	# Remove it from the dataobj list.
512	set _dlist [lreplace $_dlist $pos $pos]
513	array unset _obj2ovride $dataobj-*
514	array unset _settings $dataobj-*
515	# Append to the end of the dataobj list.
516	#lappend _dlist $dataobj
517	set changed 1
518	}
519	# If anything changed, then rebuild the plot
520	if { $changed } {
521	$_dispatcher event -idle !rebuild
522	}
523	}
524
525	# ----------------------------------------------------------------------
526	# USAGE: get ?-objects?
527	# USAGE: get ?-visible?
528	# USAGE: get ?-image view?
529	#
530	# Clients use this to query the list of objects being plotted, in
531	# order from bottom to top of this result. The optional "-image"
532	# flag can also request the internal images being shown.
533	# ----------------------------------------------------------------------
534	itcl::body Rappture::VtkHeightmapViewer::get {args} {
535	if {[llength $args] == 0} {
536	set args "-objects"
537	}
538
539	set op [lindex $args 0]
540	switch -- $op {
541	"-objects" {
542	# put the dataobj list in order according to -raise options
543	set dlist {}
544	foreach dataobj $_dlist {
545	if { ![IsValidObject $dataobj] } {
546	continue
547	}
548	if {[info exists _obj2ovride($dataobj-raise)] &&
549	$_obj2ovride($dataobj-raise)} {
550	set dlist [linsert $dlist 0 $dataobj]
551	} else {
552	lappend dlist $dataobj
553	}
554	}
555	return $dlist
556	}
557	"-visible" {
558	set dlist {}
559	foreach dataobj $_dlist {
560	if { ![IsValidObject $dataobj] } {
561	continue
562	}
563	if { ![info exists _obj2ovride($dataobj-raise)] } {
564	# No setting indicates that the object isn't visible.
565	continue
566	}
567	# Otherwise use the -raise parameter to put the object to
568	# the front of the list.
569	if { $_obj2ovride($dataobj-raise) } {
570	set dlist [linsert $dlist 0 $dataobj]
571	} else {
572	lappend dlist $dataobj
573	}
574	}
575	return $dlist
576	}
577	-image {
578	if {[llength $args] != 2} {
579	error "wrong # args: should be \"get -image view\""
580	}
581	switch -- [lindex $args end] {
582	view {
583	return $_image(plot)
584	}
585	default {
586	error "bad image name \"[lindex $args end]\": should be view"
587	}
588	}
589	}
590	default {
591	error "bad option \"$op\": should be -objects or -image"
592	}
593	}
594	}
595
596	#
597	# scale --
598	#
599	# This gets called either incrementally as new simulations are
600	# added or all at once as a sequence of heightmaps.
601	# This accounts for all objects--even those not showing on the
602	# screen. Because of this, the limits are appropriate for all
603	# objects as the user scans through data in the ResultSet viewer.
604	#
605	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
606	foreach dataobj $args {
607	foreach axis { x y } {
608	set lim [$dataobj limits $axis]
609	if { ![info exists _limits($axis)] } {
610	set _limits($axis) $lim
611	continue
612	}
613	foreach {min max} $lim break
614	foreach {amin amax} $_limits($axis) break
615	if { $amin > $min } {
616	set amin $min
617	}
618	if { $amax < $max } {
619	set amax $max
620	}
621	set _limits($axis) [list $amin $amax]
622	}
623	foreach { fname lim } [$dataobj fieldlimits] {
624	if { ![info exists _limits($fname)] } {
625	set _limits($fname) $lim
626	continue
627	}
628	foreach {min max} $lim break
629	foreach {fmin fmax} $_limits($fname) break
630	if { $fmin > $min } {
631	set fmin $min
632	}
633	if { $fmax < $max } {
634	set fmax $max
635	}
636	set _limits($fname) [list $fmin $fmax]
637	}
638	}
639	}
640
641	# ----------------------------------------------------------------------
642	# USAGE: download coming
643	# USAGE: download controls <downloadCommand>
644	# USAGE: download now
645	#
646	# Clients use this method to create a downloadable representation
647	# of the plot. Returns a list of the form {ext string}, where
648	# "ext" is the file extension (indicating the type of data) and
649	# "string" is the data itself.
650	# ----------------------------------------------------------------------
651	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
652	switch $option {
653	coming {
654	if {[catch {
655	blt::winop snap $itk_component(plotarea) $_image(download)
656	}]} {
657	$_image(download) configure -width 1 -height 1
658	$_image(download) put #000000
659	}
660	}
661	controls {
662	set popup .vtkviewerdownload
663	if { ![winfo exists .vtkviewerdownload] } {
664	set inner [BuildDownloadPopup $popup [lindex $args 0]]
665	} else {
666	set inner [$popup component inner]
667	}
668	set _downloadPopup(image_controls) $inner.image_frame
669	set num [llength [get]]
670	set num [expr {($num == 1) ? "1 result" : "$num results"}]
671	set word [Rappture::filexfer::label downloadWord]
672	$inner.summary configure -text "$word $num in the following format:"
673	update idletasks ;# Fix initial sizes
674	return $popup
675	}
676	now {
677	set popup .vtkviewerdownload
678	if {[winfo exists .vtkviewerdownload]} {
679	$popup deactivate
680	}
681	switch -- $_downloadPopup(format) {
682	"image" {
683	return [$this GetImage [lindex $args 0]]
684	}
685	"vtk" {
686	return [$this GetVtkData [lindex $args 0]]
687	}
688	}
689	return ""
690	}
691	default {
692	error "bad option \"$option\": should be coming, controls, now"
693	}
694	}
695	}
696
697	# ----------------------------------------------------------------------
698	# USAGE: Connect ?<host:port>,<host:port>...?
699	#
700	# Clients use this method to establish a connection to a new
701	# server, or to reestablish a connection to the previous server.
702	# Any existing connection is automatically closed.
703	# ----------------------------------------------------------------------
704	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
705	global readyForNextFrame
706	set readyForNextFrame 1
707	set _reset 1
708	set _hosts [GetServerList "vtkvis"]
709	if { "" == $_hosts } {
710	return 0
711	}
712	set result [VisViewer::Connect $_hosts]
713	if { $result } {
714	set w [winfo width $itk_component(view)]
715	set h [winfo height $itk_component(view)]
716	EventuallyResize $w $h
717	}
718	return $result
719	}
720
721	#
722	# isconnected --
723	#
724	# Indicates if we are currently connected to the visualization server.
725	#
726	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
727	return [VisViewer::IsConnected]
728	}
729
730	#
731	# disconnect --
732	#
733	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
734	Disconnect
735	set _reset 1
736	}
737
738	#
739	# Disconnect --
740	#
741	# Clients use this method to disconnect from the current rendering
742	# server.
743	#
744	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
745	VisViewer::Disconnect
746
747	$_dispatcher cancel !rebuild
748	$_dispatcher cancel !resize
749	$_dispatcher cancel !rotate
750	$_dispatcher cancel !legend
751	# disconnected -- no more data sitting on server
752	array unset _datasets
753	array unset _data
754	array unset _colormaps
755	array unset _obj2datasets
756	global readyForNextFrame
757	set readyForNextFrame 1
758	}
759
760	# ----------------------------------------------------------------------
761	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
762	#
763	# Invoked automatically whenever the "image" command comes in from
764	# the rendering server. Indicates that binary image data with the
765	# specified <size> will follow.
766	# ----------------------------------------------------------------------
767	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
768	global readyForNextFrame
769	set readyForNextFrame 1
770	array set info {
771	-token "???"
772	-bytes 0
773	-type image
774	}
775	array set info $args
776	set bytes [ReceiveBytes $info(-bytes)]
777	if { $info(-type) == "image" } {
778	if 0 {
779	set f [open "last.ppm" "w"]
780	puts $f $bytes
781	close $f
782	}
783	$_image(plot) configure -data $bytes
784	set time [clock seconds]
785	set date [clock format $time]
786	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
787	if { $_start > 0 } {
788	set finish [clock clicks -milliseconds]
789	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
790	set _start 0
791	}
792	} elseif { $info(type) == "print" } {
793	set tag $this-print-$info(-token)
794	set _hardcopy($tag) $bytes
795	}
796	}
797
798	#
799	# ReceiveDataset --
800	#
801	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
802	if { ![isconnected] } {
803	return
804	}
805	set option [lindex $args 0]
806	switch -- $option {
807	"scalar" {
808	set option [lindex $args 1]
809	switch -- $option {
810	"world" {
811	foreach { x y z value tag } [lrange $args 2 end] break
812	}
813	"pixel" {
814	foreach { x y value tag } [lrange $args 2 end] break
815	}
816	}
817	}
818	"vector" {
819	set option [lindex $args 1]
820	switch -- $option {
821	"world" {
822	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
823	}
824	"pixel" {
825	foreach { x y vx vy vz tag } [lrange $args 2 end] break
826	}
827	}
828	}
829	"names" {
830	foreach { name } [lindex $args 1] {
831	#puts stderr "Dataset: $name"
832	}
833	}
834	default {
835	error "unknown dataset option \"$option\" from server"
836	}
837	}
838	}
839
840	# ----------------------------------------------------------------------
841	# USAGE: Rebuild
842	#
843	# Called automatically whenever something changes that affects the
844	# data in the widget. Clears any existing data and rebuilds the
845	# widget to display new data.
846	# ----------------------------------------------------------------------
847	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
848	set w [winfo width $itk_component(view)]
849	set h [winfo height $itk_component(view)]
850	if { $w < 2 \|\| $h < 2 } {
851	$_dispatcher event -idle !rebuild
852	return
853	}
854
855	StartBufferingCommands
856	# Turn on buffering of commands to the server. We don't want to
857	# be preempted by a server disconnect/reconnect (which automatically
858	# generates a new call to Rebuild).
859	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
860	set _width $w
861	set _height $h
862	$_arcball resize $w $h
863	DoResize
864	if { $_settings(stretchToFit) } {
865	AdjustSetting stretchToFit
866	}
867	}
868	if { $_reset } {
869	if { $_reportClientInfo } {
870	# Tell the server the name of the tool, the version, and dataset
871	# that we are rendering. Have to do it here because we don't know
872	# what data objects are using the renderer until be get here.
873	global env
874
875	set info {}
876	set user "???"
877	if { [info exists env(USER)] } {
878	set user $env(USER)
879	}
880	set session "???"
881	if { [info exists env(SESSION)] } {
882	set session $env(SESSION)
883	}
884	lappend info "hub" [exec hostname]
885	lappend info "client" "vtkheightmapviewer"
886	lappend info "user" $user
887	lappend info "session" $session
888	SendCmd "clientinfo [list $info]"
889	}
890	InitSettings isHeightmap background
891	#
892	# Reset the camera and other view parameters
893	#
894	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
895	SendCmd "axis lrot z 90"
896	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
897	$_arcball quaternion $q
898	if {$_settings(isHeightmap) } {
899	if { $_view(ortho)} {
900	SendCmd "camera mode ortho"
901	} else {
902	SendCmd "camera mode persp"
903	}
904	SendCmd "camera reset"
905	DoRotate
906	}
907	PanCamera
908	SendCmd "imgflush"
909	}
910
911	set _first ""
912	# Start off with no datasets are visible.
913	SendCmd "dataset visible 0"
914	set scale [GetHeightmapScale]
915	foreach dataobj [get -objects] {
916	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
917	set _first $dataobj
918	}
919	set _obj2datasets($dataobj) ""
920	foreach comp [$dataobj components] {
921	set tag $dataobj-$comp
922	if { ![info exists _datasets($tag)] } {
923	set bytes [$dataobj vtkdata $comp]
924	if 0 {
925	set f [open /tmp/vtkheightmap.vtk "w"]
926	puts $f $bytes
927	close $f
928	}
929	set length [string length $bytes]
930	if { $_reportClientInfo } {
931	set info {}
932	lappend info "tool_id" [$dataobj hints toolId]
933	lappend info "tool_name" [$dataobj hints toolName]
934	lappend info "tool_version" [$dataobj hints toolRevision]
935	lappend info "tool_title" [$dataobj hints toolTitle]
936	lappend info "dataset_label" [$dataobj hints label]
937	lappend info "dataset_size" $length
938	lappend info "dataset_tag" $tag
939	SendCmd [list "clientinfo" $info]
940	}
941	SendCmd "dataset add $tag data follows $length"
942	append _outbuf $bytes
943	set _datasets($tag) 1
944	SetObjectStyle $dataobj $comp
945	}
946	lappend _obj2datasets($dataobj) $tag
947	if { [info exists _obj2ovride($dataobj-raise)] } {
948	# Setting dataset visible enables outline (if enabled)
949	# and heightmap
950	SendCmd "dataset visible 1 $tag"
951	}
952	if { ![info exists _comp2scale($tag)] \|\|
953	$_comp2scale($tag) != $scale } {
954	SendCmd "heightmap heightscale $scale $tag"
955	set _comp2scale($tag) $scale
956	}
957	}
958	}
959	if { $_first != "" } {
960	$itk_component(field) choices delete 0 end
961	$itk_component(fieldmenu) delete 0 end
962	array unset _fields
963	set _curFldName ""
964	foreach cname [$_first components] {
965	foreach fname [$_first fieldnames $cname] {
966	if { [info exists _fields($fname)] } {
967	continue
968	}
969	foreach { label units components } \
970	[$_first fieldinfo $fname] break
971	$itk_component(field) choices insert end "$fname" "$label"
972	$itk_component(fieldmenu) add radiobutton -label "$label" \
973	-value $label -variable [itcl::scope _curFldLabel] \
974	-selectcolor red \
975	-activebackground $itk_option(-plotbackground) \
976	-activeforeground $itk_option(-plotforeground) \
977	-font "Arial 8" \
978	-command [itcl::code $this Combo invoke]
979	set _fields($fname) [list $label $units $components]
980	if { $_curFldName == "" } {
981	set _curFldName $fname
982	set _curFldLabel $label
983	}
984	}
985	}
986	$itk_component(field) value $_curFldLabel
987	}
988	InitSettings stretchToFit
989
990	if { $_reset } {
991	SendCmd "axis tickpos outside"
992	foreach axis { x y z } {
993	SendCmd "axis lformat $axis %g"
994	}
995
996	foreach axis { x y z } {
997	set label [$_first hints ${axis}label]
998	if { $label == "" } {
999	if {$axis == "z"} {
1000	if { [string match "component*" $_curFldName] } {
1001	set label [string toupper $axis]
1002	} else {
1003	set label $_curFldLabel
1004	}
1005	} else {
1006	set label [string toupper $axis]
1007	}
1008	}
1009	# May be a space in the axis label.
1010	SendCmd [list axis name $axis $label]
1011
1012	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1013	set units [lindex $_fields($_curFldName) 1]
1014	} else {
1015	set units [$_first hints ${axis}units]
1016	}
1017	if { $units != "" } {
1018	# May be a space in the axis units.
1019	SendCmd [list axis units $axis $units]
1020	}
1021	}
1022	#
1023	# Reset the camera and other view parameters
1024	#
1025	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
1026	SendCmd "dataset color [Color2RGB $itk_option(-plotforeground)]"
1027	ResetAxes
1028	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1029	$_arcball quaternion $q
1030	if {$_settings(isHeightmap) } {
1031	if { $_view(ortho)} {
1032	SendCmd "camera mode ortho"
1033	} else {
1034	SendCmd "camera mode persp"
1035	}
1036	SendCmd "camera reset"
1037	DoRotate
1038	}
1039	PanCamera
1040	InitSettings axisXGrid axisYGrid axisZGrid \
1041	axisVisible axisLabels
1042	InitSettings opacity heightmapScale lighting edges wireframe \
1043	colormap field outline isHeightmap
1044	if { [array size _fields] < 2 } {
1045	blt::table forget $itk_component(field) $itk_component(field_l)
1046	}
1047	RequestLegend
1048	set _reset 0
1049	}
1050	global readyForNextFrame
1051	set readyForNextFrame 0; # Don't advance to the next frame
1052
1053	# Actually write the commands to the server socket. If it fails, we don't
1054	# care. We're finished here.
1055	blt::busy hold $itk_component(hull)
1056	StopBufferingCommands
1057	blt::busy release $itk_component(hull)
1058	}
1059
1060	# ----------------------------------------------------------------------
1061	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1062	#
1063	# Returns a list of server IDs for the current datasets being displayed. This
1064	# is normally a single ID, but it might be a list of IDs if the current data
1065	# object has multiple components.
1066	# ----------------------------------------------------------------------
1067	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1068	set flag [lindex $args 0]
1069	switch -- $flag {
1070	"-all" {
1071	if { [llength $args] > 1 } {
1072	error "CurrentDatasets: can't specify dataobj after \"-all\""
1073	}
1074	set dlist [get -objects]
1075	}
1076	"-visible" {
1077	if { [llength $args] > 1 } {
1078	set dlist {}
1079	set args [lrange $args 1 end]
1080	foreach dataobj $args {
1081	if { [info exists _obj2ovride($dataobj-raise)] } {
1082	lappend dlist $dataobj
1083	}
1084	}
1085	} else {
1086	set dlist [get -visible]
1087	}
1088	}
1089	default {
1090	set dlist $args
1091	}
1092	}
1093	set rlist ""
1094	foreach dataobj $dlist {
1095	foreach comp [$dataobj components] {
1096	set tag $dataobj-$comp
1097	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1098	lappend rlist $tag
1099	}
1100	}
1101	}
1102	return $rlist
1103	}
1104
1105	# ----------------------------------------------------------------------
1106	# USAGE: Zoom in
1107	# USAGE: Zoom out
1108	# USAGE: Zoom reset
1109	#
1110	# Called automatically when the user clicks on one of the zoom
1111	# controls for this widget. Changes the zoom for the current view.
1112	# ----------------------------------------------------------------------
1113	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1114	switch -- $option {
1115	"in" {
1116	set _view(zoom) [expr {$_view(zoom)*1.25}]
1117	SendCmd "camera zoom $_view(zoom)"
1118	}
1119	"out" {
1120	set _view(zoom) [expr {$_view(zoom)*0.8}]
1121	SendCmd "camera zoom $_view(zoom)"
1122	}
1123	"reset" {
1124	array set _view {
1125	qw 0.36
1126	qx 0.25
1127	qy 0.50
1128	qz 0.70
1129	zoom 1.0
1130	xpan 0
1131	ypan 0
1132	}
1133	if { $_first != "" } {
1134	set location [$_first hints camera]
1135	if { $location != "" } {
1136	array set _view $location
1137	}
1138	}
1139	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1140	$_arcball quaternion $q
1141	SendCmd "camera reset"
1142	if {$_settings(isHeightmap) } {
1143	DoRotate
1144	}
1145	}
1146	}
1147	}
1148
1149	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1150	set x $_view(xpan)
1151	set y $_view(ypan)
1152	SendCmd "camera pan $x $y"
1153	}
1154
1155
1156	# ----------------------------------------------------------------------
1157	# USAGE: Rotate click <x> <y>
1158	# USAGE: Rotate drag <x> <y>
1159	# USAGE: Rotate release <x> <y>
1160	#
1161	# Called automatically when the user clicks/drags/releases in the
1162	# plot area. Moves the plot according to the user's actions.
1163	# ----------------------------------------------------------------------
1164	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1165	switch -- $option {
1166	"click" {
1167	$itk_component(view) configure -cursor fleur
1168	set _click(x) $x
1169	set _click(y) $y
1170	}
1171	"drag" {
1172	if {[array size _click] == 0} {
1173	Rotate click $x $y
1174	} else {
1175	set w [winfo width $itk_component(view)]
1176	set h [winfo height $itk_component(view)]
1177	if {$w <= 0 \|\| $h <= 0} {
1178	return
1179	}
1180
1181	if {[catch {
1182	# this fails sometimes for no apparent reason
1183	set dx [expr {double($x-$_click(x))/$w}]
1184	set dy [expr {double($y-$_click(y))/$h}]
1185	}]} {
1186	return
1187	}
1188	if { $dx == 0 && $dy == 0 } {
1189	return
1190	}
1191	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1192	EventuallyRotate $q
1193	set _click(x) $x
1194	set _click(y) $y
1195	}
1196	}
1197	"release" {
1198	Rotate drag $x $y
1199	$itk_component(view) configure -cursor ""
1200	catch {unset _click}
1201	}
1202	default {
1203	error "bad option \"$option\": should be click, drag, release"
1204	}
1205	}
1206	}
1207
1208	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1209	foreach tag [CurrentDatasets -visible] {
1210	SendCmd "dataset getscalar pixel $x $y $tag"
1211	}
1212	}
1213
1214	# ----------------------------------------------------------------------
1215	# USAGE: $this Pan click x y
1216	# $this Pan drag x y
1217	# $this Pan release x y
1218	#
1219	# Called automatically when the user clicks on one of the zoom
1220	# controls for this widget. Changes the zoom for the current view.
1221	# ----------------------------------------------------------------------
1222	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1223	switch -- $option {
1224	"set" {
1225	set w [winfo width $itk_component(view)]
1226	set h [winfo height $itk_component(view)]
1227	set x [expr $x / double($w)]
1228	set y [expr $y / double($h)]
1229	set _view(xpan) [expr $_view(xpan) + $x]
1230	set _view(ypan) [expr $_view(ypan) + $y]
1231	PanCamera
1232	return
1233	}
1234	"click" {
1235	set _click(x) $x
1236	set _click(y) $y
1237	$itk_component(view) configure -cursor hand1
1238	}
1239	"drag" {
1240	if { ![info exists _click(x)] } {
1241	set _click(x) $x
1242	}
1243	if { ![info exists _click(y)] } {
1244	set _click(y) $y
1245	}
1246	set w [winfo width $itk_component(view)]
1247	set h [winfo height $itk_component(view)]
1248	set dx [expr ($_click(x) - $x)/double($w)]
1249	set dy [expr ($_click(y) - $y)/double($h)]
1250	set _click(x) $x
1251	set _click(y) $y
1252	set _view(xpan) [expr $_view(xpan) - $dx]
1253	set _view(ypan) [expr $_view(ypan) - $dy]
1254	PanCamera
1255	}
1256	"release" {
1257	Pan drag $x $y
1258	$itk_component(view) configure -cursor ""
1259	}
1260	default {
1261	error "unknown option \"$option\": should set, click, drag, or release"
1262	}
1263	}
1264	}
1265
1266	# ----------------------------------------------------------------------
1267	# USAGE: InitSettings <what> ?<value>?
1268	#
1269	# Used internally to update rendering settings whenever parameters
1270	# change in the popup settings panel. Sends the new settings off
1271	# to the back end.
1272	# ----------------------------------------------------------------------
1273	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1274	foreach spec $args {
1275	if { [info exists _settings($_first-$spec)] } {
1276	# Reset global setting with dataobj specific setting
1277	set _settings($spec) $_settings($_first-$spec)
1278	}
1279	AdjustSetting $spec
1280	}
1281	}
1282
1283	#
1284	# AdjustSetting --
1285	#
1286	# Changes/updates a specific setting in the widget. There are
1287	# usually user-setable option. Commands are sent to the render
1288	# server.
1289	#
1290	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1291	if { $_beforeConnect } {
1292	return
1293	}
1294	switch -- $what {
1295	"axisFlymode" {
1296	set mode [$itk_component(axisflymode) value]
1297	set mode [$itk_component(axisflymode) translate $mode]
1298	set _settings($what) $mode
1299	SendCmd "axis flymode $mode"
1300	}
1301	"axisLabels" {
1302	set bool $_settings(axisLabels)
1303	SendCmd "axis labels all $bool"
1304	}
1305	"axisMinorTicks" {
1306	set bool $_settings(axisMinorTicks)
1307	foreach axis { x y z } {
1308	SendCmd "axis minticks ${axis} $bool"
1309	}
1310	}
1311	"axisVisible" {
1312	set bool $_settings(axisVisible)
1313	SendCmd "axis visible all $bool"
1314	}
1315	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1316	set axis [string tolower [string range $what 4 4]]
1317	set bool $_settings($what)
1318	SendCmd "axis grid $axis $bool"
1319	}
1320	"background" {
1321	set bgcolor [$itk_component(background) value]
1322	array set fgcolors {
1323	"black" "white"
1324	"white" "black"
1325	"grey" "black"
1326	}
1327	configure -plotbackground $bgcolor \
1328	-plotforeground $fgcolors($bgcolor)
1329	$itk_component(view) delete "legend"
1330	DrawLegend
1331	}
1332	"colormap" {
1333	StartBufferingCommands
1334	set color [$itk_component(colormap) value]
1335	set _settings(colormap) $color
1336	if { $color == "none" } {
1337	if { $_settings(colormapVisible) } {
1338	SendCmd "heightmap surface 0"
1339	set _settings(colormapVisible) 0
1340	}
1341	} else {
1342	if { !$_settings(colormapVisible) } {
1343	SendCmd "heightmap surface 1"
1344	set _settings(colormapVisible) 1
1345	}
1346	ResetColormap $color
1347	SendCmd "heightmap colormap $_currentColormap"
1348	}
1349	#SendCmd "heightmap colormode scalar $_curFldName"
1350	#SendCmd "dataset scalar $_curFldName"
1351	StopBufferingCommands
1352	EventuallyRequestLegend
1353	}
1354	"colormapVisible" {
1355	set bool $_settings($what)
1356	SendCmd "heightmap surface $bool"
1357	}
1358	"edges" {
1359	set bool $_settings(edges)
1360	SendCmd "heightmap edges $bool"
1361	}
1362	"field" {
1363	set label [$itk_component(field) value]
1364	set fname [$itk_component(field) translate $label]
1365	set _settings(field) $fname
1366	if { [info exists _fields($fname)] } {
1367	foreach { label units components } $_fields($fname) break
1368	if { $components > 1 } {
1369	set _colorMode vmag
1370	} else {
1371	set _colorMode scalar
1372	}
1373	set _curFldName $fname
1374	set _curFldLabel $label
1375	} else {
1376	puts stderr "unknown field \"$fname\""
1377	return
1378	}
1379	set label [$_first hints zlabel]
1380	if { $label == "" } {
1381	if { [string match "component*" $_curFldName] } {
1382	set label Z
1383	} else {
1384	set label $_curFldLabel
1385	}
1386	} else {
1387	set label Z
1388	}
1389	# May be a space in the axis label.
1390	SendCmd [list axis name z $label]
1391
1392	if { [$_first hints zunits] == "" } {
1393	set units [lindex $_fields($_curFldName) 1]
1394	} else {
1395	set units [$_first hints zunits]
1396	}
1397	if { $units != "" } {
1398	# May be a space in the axis units.
1399	SendCmd [list axis units $axis $units]
1400	}
1401	# Get the new limits because the field changed.
1402	ResetAxes
1403	SendCmd "dataset scalar $_curFldName"
1404	SendCmd "heightmap colormode scalar $_curFldName"
1405	SendCmd "camera reset"
1406	DrawLegend
1407	}
1408	"heightmapScale" {
1409	if { $_settings(isHeightmap) } {
1410	set scale [GetHeightmapScale]
1411	foreach dataset [CurrentDatasets -all] {
1412	SendCmd "heightmap heightscale $scale $dataset"
1413	set _comp2scale($dataset) $scale
1414	}
1415	ResetAxes
1416	}
1417	}
1418	"isHeightmap" {
1419	set bool $_settings(isHeightmap)
1420	set c $itk_component(view)
1421	StartBufferingCommands
1422	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1423	if { $bool } {
1424	set _settings(heightmapScale) 50
1425	set _settings(opacity) $_settings(saveOpacity)
1426	set _settings(lighting) $_settings(saveLighting)
1427	} else {
1428	set _settings(heightmapScale) 0
1429	set _settings(lighting) 0
1430	set _settings(opacity) 100
1431	}
1432	AdjustSetting lighting
1433	AdjustSetting opacity
1434	set scale [GetHeightmapScale]
1435	foreach dataset [CurrentDatasets -all] {
1436	SendCmd "heightmap heightscale $scale $dataset"
1437	set _comp2scale($dataset) $scale
1438	}
1439	if { $bool } {
1440	$itk_component(lighting) configure -state normal
1441	$itk_component(opacity) configure -state normal
1442	$itk_component(scale) configure -state normal
1443	$itk_component(opacity_l) configure -state normal
1444	$itk_component(scale_l) configure -state normal
1445	if {$_view(ortho)} {
1446	SendCmd "camera mode ortho"
1447	} else {
1448	SendCmd "camera mode persp"
1449	}
1450	} else {
1451	$itk_component(lighting) configure -state disabled
1452	$itk_component(opacity) configure -state disabled
1453	$itk_component(scale) configure -state disabled
1454	$itk_component(opacity_l) configure -state disabled
1455	$itk_component(scale_l) configure -state disabled
1456	SendCmd "camera mode image"
1457	}
1458	if {$_settings(stretchToFit)} {
1459	if {$scale == 0} {
1460	SendCmd "camera aspect window"
1461	} else {
1462	SendCmd "camera aspect square"
1463	}
1464	}
1465	ResetAxes
1466	SendCmd "camera reset"
1467	if { $bool } {
1468	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1469	$_arcball quaternion $q
1470	SendCmd "camera orient $q"
1471	} else {
1472	bind $c <ButtonPress-1> {}
1473	bind $c <B1-Motion> {}
1474	bind $c <ButtonRelease-1> {}
1475	}
1476	# Fix the mouse bindings for rotation/panning and the
1477	# camera mode. Ideally we'd create a bindtag for these.
1478	if { $bool } {
1479	# Bindings for rotation via mouse
1480	bind $c <ButtonPress-1> \
1481	[itcl::code $this Rotate click %x %y]
1482	bind $c <B1-Motion> \
1483	[itcl::code $this Rotate drag %x %y]
1484	bind $c <ButtonRelease-1> \
1485	[itcl::code $this Rotate release %x %y]
1486	}
1487	StopBufferingCommands
1488	}
1489	"isolineColor" {
1490	set color [$itk_component(isolinecolor) value]
1491	if { $color == "none" } {
1492	if { $_settings(isolinesVisible) } {
1493	SendCmd "heightmap isolines 0"
1494	set _settings(isolinesVisible) 0
1495	}
1496	} else {
1497	if { !$_settings(isolinesVisible) } {
1498	SendCmd "heightmap isolines 1"
1499	set _settings(isolinesVisible) 1
1500	}
1501	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1502	}
1503	DrawLegend
1504	}
1505	"isolinesVisible" {
1506	set bool $_settings($what)
1507	SendCmd "heightmap isolines $bool"
1508	DrawLegend
1509	}
1510	"legendVisible" {
1511	if { !$_settings($what) } {
1512	$itk_component(view) delete legend
1513	}
1514	DrawLegend
1515	}
1516	"lighting" {
1517	if { $_settings(isHeightmap) } {
1518	set _settings(saveLighting) $_settings(lighting)
1519	set bool $_settings($what)
1520	SendCmd "heightmap lighting $bool"
1521	} else {
1522	SendCmd "heightmap lighting 0"
1523	}
1524	}
1525	"numIsolines" {
1526	set _settings(numIsolines) [$itk_component(numisolines) value]
1527	SendCmd "heightmap numcontours $_settings(numIsolines)"
1528	DrawLegend
1529	}
1530	"opacity" {
1531	if { $_settings(isHeightmap) } {
1532	set _settings(saveOpacity) $_settings(opacity)
1533	set val $_settings(opacity)
1534	set sval [expr { 0.01 * double($val) }]
1535	SendCmd "heightmap opacity $sval"
1536	} else {
1537	SendCmd "heightmap opacity 1"
1538	}
1539	}
1540	"outline" {
1541	set bool $_settings($what)
1542	SendCmd "dataset outline $bool"
1543	}
1544	"stretchToFit" {
1545	set bool $_settings($what)
1546	if { $bool } {
1547	set heightScale [GetHeightmapScale]
1548	if {$heightScale == 0} {
1549	SendCmd "camera aspect window"
1550	} else {
1551	SendCmd "camera aspect square"
1552	}
1553	} else {
1554	SendCmd "camera aspect native"
1555	}
1556	}
1557	"wireframe" {
1558	set bool $_settings($what)
1559	SendCmd "heightmap wireframe $bool"
1560	}
1561	default {
1562	error "don't know how to fix $what"
1563	}
1564	}
1565	}
1566
1567	#
1568	# RequestLegend --
1569	#
1570	# Request a new legend from the server. The size of the legend
1571	# is determined from the height of the canvas.
1572	#
1573	# This should be called when
1574	# 1. A new current colormap is set.
1575	# 2. Window is resized.
1576	# 3. The limits of the data have changed. (Just need a redraw).
1577	# 4. Number of isolines have changed. (Just need a redraw).
1578	# 5. Legend becomes visible (Just need a redraw).
1579	#
1580	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1581	set _legendPending 0
1582	set font "Arial 8"
1583	set w 12
1584	set lineht [font metrics $font -linespace]
1585	# color ramp height = (canvas height) - (min and max value lines) - 2
1586	set h [expr {$_height - 2 * ($lineht + 2)}]
1587	set _legendHeight $h
1588
1589	set fname $_curFldName
1590	if { [string match "component*" $fname] } {
1591	set title ""
1592	} else {
1593	if { [info exists _fields($fname)] } {
1594	foreach { title units } $_fields($fname) break
1595	if { $units != "" } {
1596	set title [format "%s (%s)" $title $units]
1597	}
1598	} else {
1599	set title $fname
1600	}
1601	}
1602	# If there's a title too, substract one more line
1603	if { $title != "" } {
1604	incr h -$lineht
1605	}
1606	if { $h < 1} {
1607	return
1608	}
1609	# Set the legend on the first heightmap dataset.
1610	if { $_currentColormap != "" } {
1611	set cmap $_currentColormap
1612	SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1613	#SendCmd "heightmap colormode scalar $_curFldName"
1614	#SendCmd "dataset scalar $_curFldName"
1615	}
1616	}
1617
1618	#
1619	# ResetAxes --
1620	#
1621	# Set axis z bounds and range
1622	#
1623	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1624	if { ![info exists _limits($_curFldName)]} {
1625	SendCmd "dataset maprange all"
1626	SendCmd "axis autorange z on"
1627	SendCmd "axis autobounds z on"
1628	return
1629	}
1630	foreach { xmin xmax } $_limits(x) break
1631	foreach { ymin ymax } $_limits(y) break
1632	foreach { vmin vmax } $_limits($_curFldName) break
1633
1634	global tcl_precision
1635	set tcl_precision 17
1636	set xr [expr $xmax - $xmin]
1637	set yr [expr $ymax - $ymin]
1638	set vr [expr $vmax - $vmin]
1639	set r [expr ($yr > $xr) ? $yr : $xr]
1640	if { $vr < 1.0e-17 } {
1641	set dataScale 1.0
1642	} else {
1643	set dataScale [expr $r / $vr]
1644	}
1645	set heightScale [GetHeightmapScale]
1646	set bmin [expr $heightScale * $dataScale * $vmin]
1647	set bmax [expr $heightScale * $dataScale * $vmax]
1648	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1649	SendCmd "axis bounds z $bmin $bmax"
1650	SendCmd "axis range z $_limits($_curFldName)"
1651	}
1652
1653	#
1654	# SetCurrentColormap --
1655	#
1656	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { stylelist } {
1657	array set style {
1658	-color BCGYR
1659	-levels 10
1660	-opacity 1.0
1661	}
1662	array set style $stylelist
1663
1664	set name "$style(-color):$style(-levels):$style(-opacity)"
1665	if { ![info exists _colormaps($name)] } {
1666	set stylelist [array get style]
1667	BuildColormap $name $stylelist
1668	set _colormaps($name) $stylelist
1669	}
1670	set _currentColormap $name
1671	}
1672
1673
1674	#
1675	# BuildColormap --
1676	#
1677	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name stylelist } {
1678	array set style $stylelist
1679	set cmap [ColorsToColormap $style(-color)]
1680	if { [llength $cmap] == 0 } {
1681	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1682	}
1683	if { ![info exists _settings(opacity)] } {
1684	set _settings(opacity) $style(-opacity)
1685	}
1686	set max $_settings(opacity)
1687
1688	set wmap "0.0 1.0 1.0 1.0"
1689	SendCmd "colormap add $name { $cmap } { $wmap }"
1690	}
1691
1692	# ----------------------------------------------------------------------
1693	# CONFIGURATION OPTION: -mode
1694	# ----------------------------------------------------------------------
1695	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1696	switch -- $itk_option(-mode) {
1697	"heightmap" {
1698	set _settings(isHeightmap) 1
1699	}
1700	"contour" {
1701	set _settings(isHeightmap) 0
1702	}
1703	default {
1704	error "unknown mode settings \"$itk_option(-mode)\""
1705	}
1706	}
1707	AdjustSetting isHeightmap
1708	}
1709
1710	# ----------------------------------------------------------------------
1711	# CONFIGURATION OPTION: -plotbackground
1712	# ----------------------------------------------------------------------
1713	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1714	if { [isconnected] } {
1715	set rgb [Color2RGB $itk_option(-plotbackground)]
1716	SendCmd "screen bgcolor $rgb"
1717	$itk_component(view) configure -background $itk_option(-plotbackground)
1718	}
1719	}
1720
1721	# ----------------------------------------------------------------------
1722	# CONFIGURATION OPTION: -plotforeground
1723	# ----------------------------------------------------------------------
1724	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1725	if { [isconnected] } {
1726	set rgb [Color2RGB $itk_option(-plotforeground)]
1727	SendCmd "dataset color $rgb"
1728	SendCmd "axis color all $rgb"
1729	}
1730	}
1731
1732	itcl::body Rappture::VtkHeightmapViewer::limits3 { dataobj } {
1733	lappend limits x [$dataobj limits x]
1734	lappend limits y [$dataobj limits y]
1735	if { [catch { $dataobj limits $_curFldName } vlim] != 0 } {
1736	set vlim [$dataobj limits v]
1737	}
1738	lappend limits v $vlim
1739	return $limits
1740	}
1741
1742	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1743
1744	set fg [option get $itk_component(hull) font Font]
1745	#set bfg [option get $itk_component(hull) boldFont Font]
1746
1747	set inner [$itk_component(main) insert end \
1748	-title "Contour/Surface Settings" \
1749	-icon [Rappture::icon contour]]
1750	$inner configure -borderwidth 4
1751
1752	checkbutton $inner.legend \
1753	-text "Legend" \
1754	-variable [itcl::scope _settings(legendVisible)] \
1755	-command [itcl::code $this AdjustSetting legendVisible] \
1756	-font "Arial 9"
1757
1758	checkbutton $inner.wireframe \
1759	-text "Wireframe" \
1760	-variable [itcl::scope _settings(wireframe)] \
1761	-command [itcl::code $this AdjustSetting wireframe] \
1762	-font "Arial 9"
1763
1764	itk_component add lighting {
1765	checkbutton $inner.lighting \
1766	-text "Enable Lighting" \
1767	-variable [itcl::scope _settings(lighting)] \
1768	-command [itcl::code $this AdjustSetting lighting] \
1769	-font "Arial 9"
1770	} {
1771	ignore -font
1772	}
1773	checkbutton $inner.edges \
1774	-text "Edges" \
1775	-variable [itcl::scope _settings(edges)] \
1776	-command [itcl::code $this AdjustSetting edges] \
1777	-font "Arial 9"
1778
1779	checkbutton $inner.outline \
1780	-text "Outline" \
1781	-variable [itcl::scope _settings(outline)] \
1782	-command [itcl::code $this AdjustSetting outline] \
1783	-font "Arial 9"
1784
1785	checkbutton $inner.stretch \
1786	-text "Stretch to fit" \
1787	-variable [itcl::scope _settings(stretchToFit)] \
1788	-command [itcl::code $this AdjustSetting stretchToFit] \
1789	-font "Arial 9"
1790
1791	checkbutton $inner.isolines \
1792	-text "Isolines" \
1793	-variable [itcl::scope _settings(isolinesVisible)] \
1794	-command [itcl::code $this AdjustSetting isolinesVisible] \
1795	-font "Arial 9"
1796
1797	itk_component add field_l {
1798	label $inner.field_l -text "Field" -font "Arial 9"
1799	} {
1800	ignore -font
1801	}
1802	itk_component add field {
1803	Rappture::Combobox $inner.field -width 10 -editable no
1804	}
1805	bind $inner.field <<Value>> \
1806	[itcl::code $this AdjustSetting field]
1807
1808	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1809	itk_component add colormap {
1810	Rappture::Combobox $inner.colormap -width 10 -editable no
1811	}
1812	$inner.colormap choices insert end \
1813	"BCGYR" "BCGYR" \
1814	"BGYOR" "BGYOR" \
1815	"blue" "blue" \
1816	"blue-to-brown" "blue-to-brown" \
1817	"blue-to-orange" "blue-to-orange" \
1818	"blue-to-grey" "blue-to-grey" \
1819	"green-to-magenta" "green-to-magenta" \
1820	"greyscale" "greyscale" \
1821	"nanohub" "nanohub" \
1822	"rainbow" "rainbow" \
1823	"spectral" "spectral" \
1824	"ROYGB" "ROYGB" \
1825	"RYGCB" "RYGCB" \
1826	"brown-to-blue" "brown-to-blue" \
1827	"grey-to-blue" "grey-to-blue" \
1828	"orange-to-blue" "orange-to-blue" \
1829	"none" "none"
1830
1831	$itk_component(colormap) value "BCGYR"
1832	bind $inner.colormap <<Value>> \
1833	[itcl::code $this AdjustSetting colormap]
1834
1835	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1836	itk_component add isolinecolor {
1837	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1838	}
1839	$inner.isolinecolor choices insert end \
1840	"black" "black" \
1841	"blue" "blue" \
1842	"cyan" "cyan" \
1843	"green" "green" \
1844	"grey" "grey" \
1845	"magenta" "magenta" \
1846	"orange" "orange" \
1847	"red" "red" \
1848	"white" "white" \
1849	"none" "none"
1850
1851	$itk_component(isolinecolor) value "black"
1852	bind $inner.isolinecolor <<Value>> \
1853	[itcl::code $this AdjustSetting isolineColor]
1854
1855	label $inner.background_l -text "Background Color" -font "Arial 9"
1856	itk_component add background {
1857	Rappture::Combobox $inner.background -width 10 -editable no
1858	}
1859	$inner.background choices insert end \
1860	"black" "black" \
1861	"white" "white" \
1862	"grey" "grey"
1863
1864	$itk_component(background) value "white"
1865	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1866
1867	itk_component add opacity_l {
1868	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1869	} {
1870	ignore -font
1871	}
1872	itk_component add opacity {
1873	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1874	-variable [itcl::scope _settings(opacity)] \
1875	-showvalue off \
1876	-command [itcl::code $this AdjustSetting opacity]
1877	}
1878	itk_component add scale_l {
1879	label $inner.scale_l -text "Scale" -font "Arial 9"
1880	} {
1881	ignore -font
1882	}
1883	itk_component add scale {
1884	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1885	-variable [itcl::scope _settings(heightmapScale)] \
1886	-showvalue off \
1887	-command [itcl::code $this AdjustSetting heightmapScale]
1888	}
1889	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1890	itk_component add numisolines {
1891	Rappture::Spinint $inner.numisolines \
1892	-min 2 -max 50 -font "arial 9"
1893	}
1894	$itk_component(numisolines) value $_settings(numIsolines)
1895	bind $itk_component(numisolines) <<Value>> \
1896	[itcl::code $this AdjustSetting numIsolines]
1897
1898	frame $inner.separator -height 2 -relief sunken -bd 1
1899	blt::table $inner \
1900	0,0 $inner.field_l -anchor w -pady 2 \
1901	0,1 $inner.field -anchor w -pady 2 -fill x \
1902	1,0 $inner.colormap_l -anchor w -pady 2 \
1903	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1904	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
1905	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
1906	3,0 $inner.background_l -anchor w -pady 2 \
1907	3,1 $inner.background -anchor w -pady 2 -fill x \
1908	4,0 $inner.numisolines_l -anchor w -pady 2 \
1909	4,1 $inner.numisolines -anchor w -pady 2 \
1910	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
1911	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1912	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1913	8,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
1914	9,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1915	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
1916	11,0 $inner.separator -padx 2 -fill x -cspan 2 \
1917	12,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1918	13,0 $inner.opacity_l -anchor w -pady 2 \
1919	13,1 $inner.opacity -fill x -pady 2 \
1920	14,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
1921	14,1 $inner.scale -fill x -pady 2 -cspan 2 \
1922
1923	blt::table configure $inner r* c* -resize none
1924	blt::table configure $inner r15 c1 -resize expand
1925	}
1926
1927	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
1928
1929	set fg [option get $itk_component(hull) font Font]
1930	#set bfg [option get $itk_component(hull) boldFont Font]
1931
1932	set inner [$itk_component(main) insert end \
1933	-title "Axis Settings" \
1934	-icon [Rappture::icon axis1]]
1935	$inner configure -borderwidth 4
1936
1937	checkbutton $inner.visible \
1938	-text "Axes" \
1939	-variable [itcl::scope _settings(axisVisible)] \
1940	-command [itcl::code $this AdjustSetting axisVisible] \
1941	-font "Arial 9"
1942	checkbutton $inner.labels \
1943	-text "Axis Labels" \
1944	-variable [itcl::scope _settings(axisLabels)] \
1945	-command [itcl::code $this AdjustSetting axisLabels] \
1946	-font "Arial 9"
1947	label $inner.grid_l -text "Grid" -font "Arial 9"
1948	checkbutton $inner.xgrid \
1949	-text "X" \
1950	-variable [itcl::scope _settings(axisXGrid)] \
1951	-command [itcl::code $this AdjustSetting axisXGrid] \
1952	-font "Arial 9"
1953	checkbutton $inner.ygrid \
1954	-text "Y" \
1955	-variable [itcl::scope _settings(axisYGrid)] \
1956	-command [itcl::code $this AdjustSetting axisYGrid] \
1957	-font "Arial 9"
1958	checkbutton $inner.zgrid \
1959	-text "Z" \
1960	-variable [itcl::scope _settings(axisZGrid)] \
1961	-command [itcl::code $this AdjustSetting axisZGrid] \
1962	-font "Arial 9"
1963	checkbutton $inner.minorticks \
1964	-text "Minor Ticks" \
1965	-variable [itcl::scope _settings(axisMinorTicks)] \
1966	-command [itcl::code $this AdjustSetting axisMinorTicks] \
1967	-font "Arial 9"
1968
1969
1970	label $inner.mode_l -text "Mode" -font "Arial 9"
1971
1972	itk_component add axisflymode {
1973	Rappture::Combobox $inner.mode -width 10 -editable no
1974	}
1975	$inner.mode choices insert end \
1976	"static_triad" "static" \
1977	"closest_triad" "closest" \
1978	"furthest_triad" "furthest" \
1979	"outer_edges" "outer"
1980	$itk_component(axisflymode) value "static"
1981	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlymode]
1982
1983	blt::table $inner \
1984	0,0 $inner.visible -anchor w -cspan 4 \
1985	1,0 $inner.labels -anchor w -cspan 4 \
1986	2,0 $inner.minorticks -anchor w -cspan 4 \
1987	4,0 $inner.grid_l -anchor w \
1988	4,1 $inner.xgrid -anchor w \
1989	4,2 $inner.ygrid -anchor w \
1990	4,3 $inner.zgrid -anchor w \
1991	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1992	5,1 $inner.mode -fill x -cspan 3
1993
1994	blt::table configure $inner r* c* -resize none
1995	blt::table configure $inner r7 c6 -resize expand
1996	blt::table configure $inner r3 -height 0.125i
1997	}
1998
1999
2000	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2001	set inner [$itk_component(main) insert end \
2002	-title "Camera Settings" \
2003	-icon [Rappture::icon camera]]
2004	$inner configure -borderwidth 4
2005
2006	set labels { qx qy qz qw xpan ypan zoom }
2007	set row 0
2008	foreach tag $labels {
2009	label $inner.${tag}label -text $tag -font "Arial 9"
2010	entry $inner.${tag} -font "Arial 9" -bg white \
2011	-textvariable [itcl::scope _view($tag)]
2012	bind $inner.${tag} <KeyPress-Return> \
2013	[itcl::code $this camera set ${tag}]
2014	blt::table $inner \
2015	$row,0 $inner.${tag}label -anchor e -pady 2 \
2016	$row,1 $inner.${tag} -anchor w -pady 2
2017	blt::table configure $inner r$row -resize none
2018	incr row
2019	}
2020	checkbutton $inner.ortho \
2021	-text "Orthographic Projection" \
2022	-variable [itcl::scope _view(ortho)] \
2023	-command [itcl::code $this camera set ortho] \
2024	-font "Arial 9"
2025	blt::table $inner \
2026	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2027	blt::table configure $inner r$row -resize none
2028	incr row
2029
2030	blt::table configure $inner c0 c1 -resize none
2031	blt::table configure $inner c2 -resize expand
2032	blt::table configure $inner r$row -resize expand
2033	}
2034
2035	#
2036	# camera --
2037	#
2038	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2039	switch -- $option {
2040	"show" {
2041	puts [array get _view]
2042	}
2043	"set" {
2044	set who [lindex $args 0]
2045	set x $_view($who)
2046	set code [catch { string is double $x } result]
2047	if { $code != 0 \|\| !$result } {
2048	return
2049	}
2050	switch -- $who {
2051	"ortho" {
2052	if {$_view(ortho)} {
2053	SendCmd "camera mode ortho"
2054	} else {
2055	SendCmd "camera mode persp"
2056	}
2057	}
2058	"xpan" - "ypan" {
2059	PanCamera
2060	}
2061	"qx" - "qy" - "qz" - "qw" {
2062	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2063	$_arcball quaternion $q
2064	EventuallyRotate $q
2065	}
2066	"zoom" {
2067	SendCmd "camera zoom $_view(zoom)"
2068	}
2069	}
2070	}
2071	}
2072	}
2073
2074	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2075	set bytes ""
2076	foreach dataobj [get] {
2077	foreach comp [$dataobj components] {
2078	set tag $dataobj-$comp
2079	#set contents [ConvertToVtkData $dataobj $comp]
2080	set contents [$dataobj vtkdata $comp]
2081	append bytes "$contents\n\n"
2082	}
2083	}
2084	return [list .vtk $bytes]
2085	}
2086
2087	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2088	if { [image width $_image(download)] > 0 &&
2089	[image height $_image(download)] > 0 } {
2090	set bytes [$_image(download) data -format "jpeg -quality 100"]
2091	set bytes [Rappture::encoding::decode -as b64 $bytes]
2092	return [list .jpg $bytes]
2093	}
2094	return ""
2095	}
2096
2097	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2098	Rappture::Balloon $popup \
2099	-title "[Rappture::filexfer::label downloadWord] as..."
2100	set inner [$popup component inner]
2101	label $inner.summary -text "" -anchor w
2102	radiobutton $inner.vtk_button -text "VTK data file" \
2103	-variable [itcl::scope _downloadPopup(format)] \
2104	-font "Arial 9 " \
2105	-value vtk
2106	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2107	radiobutton $inner.image_button -text "Image File" \
2108	-variable [itcl::scope _downloadPopup(format)] \
2109	-font "Arial 9 " \
2110	-value image
2111	Rappture::Tooltip::for $inner.image_button \
2112	"Save as digital image."
2113
2114	button $inner.ok -text "Save" \
2115	-highlightthickness 0 -pady 2 -padx 3 \
2116	-command $command \
2117	-compound left \
2118	-image [Rappture::icon download]
2119
2120	button $inner.cancel -text "Cancel" \
2121	-highlightthickness 0 -pady 2 -padx 3 \
2122	-command [list $popup deactivate] \
2123	-compound left \
2124	-image [Rappture::icon cancel]
2125
2126	blt::table $inner \
2127	0,0 $inner.summary -cspan 2 \
2128	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2129	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2130	4,1 $inner.cancel -width .9i -fill y \
2131	4,0 $inner.ok -padx 2 -width .9i -fill y
2132	blt::table configure $inner r3 -height 4
2133	blt::table configure $inner r4 -pady 4
2134	raise $inner.image_button
2135	$inner.vtk_button invoke
2136	return $inner
2137	}
2138
2139	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2140	# Parse style string.
2141	set tag $dataobj-$comp
2142	array set style {
2143	-color BCGYR
2144	-edges 0
2145	-edgecolor black
2146	-linewidth 1.0
2147	-levels 10
2148	-visible 1
2149	}
2150	if { $_currentColormap == "" } {
2151	set stylelist [$dataobj style $comp]
2152	if { $stylelist != "" } {
2153	array set style $stylelist
2154	set stylelist [array get style]
2155	SetCurrentColormap $stylelist
2156	}
2157	$itk_component(colormap) value $style(-color)
2158	}
2159	SendCmd "dataset outline $_settings(outline) $tag"
2160	SendCmd "dataset color [Color2RGB $itk_option(-plotforeground)] $tag"
2161	set _settings(numIsolines) $style(-levels)
2162	set scale [GetHeightmapScale]
2163	SendCmd "heightmap add numcontours $_settings(numIsolines) $scale $tag"
2164	set _comp2scale($tag) $_settings(heightmapScale)
2165	SendCmd "heightmap edges $_settings(edges) $tag"
2166	SendCmd "heightmap wireframe $_settings(wireframe) $tag"
2167	SendCmd "heightmap colormap $_currentColormap $tag"
2168	set color [$itk_component(isolinecolor) value]
2169	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2170	SendCmd "heightmap lighting $_settings(isHeightmap) $tag"
2171	}
2172
2173	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2174	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2175	return 0
2176	}
2177	return 1
2178	}
2179
2180	# ----------------------------------------------------------------------
2181	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2182	#
2183	# Invoked automatically whenever the "legend" command comes in from
2184	# the rendering server. Indicates that binary image data with the
2185	# specified <size> will follow.
2186	# ----------------------------------------------------------------------
2187	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2188	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2189	if { [isconnected] } {
2190	set bytes [ReceiveBytes $size]
2191	if { ![info exists _image(legend)] } {
2192	set _image(legend) [image create photo]
2193	}
2194	$_image(legend) configure -data $bytes
2195	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2196	if { [catch {DrawLegend} errs] != 0 } {
2197	global errorInfo
2198	puts stderr "errs=$errs errorInfo=$errorInfo"
2199	}
2200	}
2201	}
2202
2203	#
2204	# DrawLegend --
2205	#
2206	# Draws the legend in the own canvas on the right side of the plot area.
2207	#
2208	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2209	set fname $_curFldName
2210	set c $itk_component(view)
2211	set w [winfo width $c]
2212	set h [winfo height $c]
2213	set font "Arial 8"
2214	set lineht [font metrics $font -linespace]
2215
2216	if { [string match "component*" $fname] } {
2217	set title ""
2218	} else {
2219	if { [info exists _fields($fname)] } {
2220	foreach { title units } $_fields($fname) break
2221	if { $units != "" } {
2222	set title [format "%s (%s)" $title $units]
2223	}
2224	} else {
2225	set title $fname
2226	}
2227	}
2228	set x [expr $w - 2]
2229	if { !$_settings(legendVisible) } {
2230	$c delete legend
2231	return
2232	}
2233	if { [$c find withtag "legend"] == "" } {
2234	set y 2
2235	# If there's a legend title, create a text item for the title.
2236	$c create text $x $y \
2237	-anchor ne \
2238	-fill $itk_option(-plotforeground) -tags "title legend" \
2239	-font $font
2240	incr y $lineht
2241	$c create text $x $y \
2242	-anchor ne \
2243	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2244	-font $font
2245	incr y $lineht
2246	$c create image $x $y \
2247	-anchor ne \
2248	-image $_image(legend) -tags "colormap legend"
2249	$c create rectangle $x $y 1 1 \
2250	-fill "" -outline "" -tags "sensor legend"
2251	$c create text $x [expr {$h-2}] \
2252	-anchor se \
2253	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2254	-font $font
2255	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2256	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2257	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2258	}
2259	$c delete isoline
2260	set x2 $x
2261	set iw [image width $_image(legend)]
2262	set ih [image height $_image(legend)]
2263	set x1 [expr $x2 - ($iw*12)/10]
2264	set color [$itk_component(isolinecolor) value]
2265
2266	# Draw the isolines on the legend.
2267	if { $color != "none" && [info exists _limits($_curFldName)] &&
2268	$_settings(isolinesVisible) && $_settings(numIsolines) > 0 } {
2269	set pixels [blt::vector create \#auto]
2270	set values [blt::vector create \#auto]
2271	set range [image height $_image(legend)]
2272	# Order of pixels is max to min (max is at top of legend).
2273	$pixels seq $ih 0 $_settings(numIsolines)
2274
2275	set offset [expr 2 + $lineht]
2276	# If there's a legend title, increase the offset by the line height.
2277	if { $title != "" } {
2278	incr offset $lineht
2279	}
2280	$pixels expr {round($pixels + $offset)}
2281	# Order of values is min to max.
2282	foreach { vmin vmax } $_limits($_curFldName) break
2283	$values seq $vmin $vmax $_settings(numIsolines)
2284	set tags "isoline legend"
2285	array unset _isolines
2286	foreach pos [$pixels range 0 end] value [$values range end 0] {
2287	set y1 [expr int($pos)]
2288	for { set off 0 } { $off < 3 } { incr off } {
2289	set _isolines([expr $y1 + $off]) $value
2290	set _isolines([expr $y1 - $off]) $value
2291	}
2292	set id [$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags]
2293	#$c bind $id <B1-Enter> [itcl::code $this EnterIsoline %x %y $value]
2294	#$c bind $id <Leave> [itcl::code $this LeaveIsoline]
2295	}
2296	blt::vector destroy $pixels $values
2297	}
2298
2299	$c bind title <ButtonPress> [itcl::code $this Combo post]
2300	$c bind title <Enter> [itcl::code $this Combo activate]
2301	$c bind title <Leave> [itcl::code $this Combo deactivate]
2302	# Reset the item coordinates according the current size of the plot.
2303	if { [info exists _limits($_curFldName)] } {
2304	foreach { vmin vmax } $_limits($_curFldName) break
2305	$c itemconfigure vmin -text [format %g $vmin]
2306	$c itemconfigure vmax -text [format %g $vmax]
2307	}
2308	set y 2
2309	# If there's a legend title, move the title to the correct position
2310	if { $title != "" } {
2311	$c itemconfigure title -text $title
2312	$c coords title $x $y
2313	incr y $lineht
2314	}
2315	$c coords vmax $x $y
2316	incr y $lineht
2317	$c coords colormap $x $y
2318	set ix [image width $_image(legend)]
2319	set ih [image height $_image(legend)]
2320	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2321	$c raise sensor
2322	$c coords vmin $x [expr {$h - 2}]
2323	}
2324
2325	#
2326	# EnterLegend --
2327	#
2328	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2329	SetLegendTip $x $y
2330	}
2331
2332	#
2333	# MotionLegend --
2334	#
2335	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2336	Rappture::Tooltip::tooltip cancel
2337	set c $itk_component(view)
2338	set cw [winfo width $c]
2339	set ch [winfo height $c]
2340	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2341	SetLegendTip $x $y
2342	}
2343	}
2344
2345	#
2346	# LeaveLegend --
2347	#
2348	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2349	Rappture::Tooltip::tooltip cancel
2350	.rappturetooltip configure -icon ""
2351	}
2352
2353	#
2354	# SetLegendTip --
2355	#
2356	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2357	set fname $_curFldName
2358	set c $itk_component(view)
2359	set w [winfo width $c]
2360	set h [winfo height $c]
2361	set font "Arial 8"
2362	set lineht [font metrics $font -linespace]
2363
2364	set ih [image height $_image(legend)]
2365	# Subtract off the offset of the color ramp from the top of the canvas
2366	set iy [expr $y - ($lineht + 2)]
2367
2368	if { [string match "component*" $fname] } {
2369	set title ""
2370	} else {
2371	if { [info exists _fields($fname)] } {
2372	foreach { title units } $_fields($fname) break
2373	if { $units != "" } {
2374	set title [format "%s (%s)" $title $units]
2375	}
2376	} else {
2377	set title $fname
2378	}
2379	}
2380	# If there's a legend title, increase the offset by the line height.
2381	if { $title != "" } {
2382	incr iy -$lineht
2383	}
2384
2385	# Make a swatch of the selected color
2386	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2387	return
2388	}
2389
2390	if { ![info exists _image(swatch)] } {
2391	set _image(swatch) [image create photo -width 24 -height 24]
2392	}
2393	set color [eval format "\#%02x%02x%02x" $pixel]
2394	$_image(swatch) put black -to 0 0 23 23
2395	$_image(swatch) put $color -to 1 1 22 22
2396
2397	# Compute the value of the point
2398	if { [info exists _limits($fname)] } {
2399	foreach { vmin vmax } $_limits($fname) break
2400	set t [expr 1.0 - (double($iy) / double($ih-1))]
2401	set value [expr $t * ($vmax - $vmin) + $vmin]
2402	} else {
2403	set value 0.0
2404	}
2405	set tipx [expr $x + 15]
2406	set tipy [expr $y - 5]
2407	.rappturetooltip configure -icon $_image(swatch)
2408	if { [info exists _isolines($y)] } {
2409	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2410	} else {
2411	Rappture::Tooltip::text $c [format "$title %g" $value]
2412	}
2413	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2414	}
2415
2416	# ----------------------------------------------------------------------
2417	# USAGE: _dropdown post
2418	# USAGE: _dropdown unpost
2419	# USAGE: _dropdown select
2420	#
2421	# Used internally to handle the dropdown list for this combobox. The
2422	# post/unpost options are invoked when the list is posted or unposted
2423	# to manage the relief of the controlling button. The select option
2424	# is invoked whenever there is a selection from the list, to assign
2425	# the value back to the gauge.
2426	# ----------------------------------------------------------------------
2427	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2428	set c $itk_component(view)
2429	switch -- $option {
2430	post {
2431	foreach { x1 y1 x2 y2 } [$c bbox title] break
2432	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2433	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2434	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2435	tk_popup $itk_component(fieldmenu) $x $y
2436	}
2437	activate {
2438	$c itemconfigure title -fill red
2439	}
2440	deactivate {
2441	$c itemconfigure title -fill $itk_option(-plotforeground)
2442	}
2443	invoke {
2444	$itk_component(field) value $_curFldLabel
2445	AdjustSetting field
2446	}
2447	default {
2448	error "bad option \"$option\": should be post, unpost, select"
2449	}
2450	}
2451	}
2452
2453	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2454	if { $_settings(isHeightmap) } {
2455	set val $_settings(heightmapScale)
2456	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2457	return $sval
2458	}
2459	set sval 0
2460	}
2461
2462	itcl::body Rappture::VtkHeightmapViewer::ResetColormap { color } {
2463	array set style {
2464	-color BCGYR
2465	-levels 10
2466	-opacity 1.0
2467	}
2468	if { [info exists _colormap($_currentColormap)] } {
2469	array set style $_colormap($_currentColormap)
2470	}
2471	set style(-color) $color
2472	SetCurrentColormap [array get style]
2473	}
2474

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