Context Navigation

source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 3459

Last change on this file since 3459 was 3459, checked in by ldelgass, 11 years ago
Fix error on setting axis units (found in contour example: Mesh-grid-hybrid)
File size: 82.0 KB

Line
1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkheightmapviewer - Vtk heightmap viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkHeightmapViewer.width 4i widgetDefault
19	option add VtkHeightmapViewercursor crosshair widgetDefault
20	option add *VtkHeightmapViewer.height 4i widgetDefault
21	option add *VtkHeightmapViewer.foreground black widgetDefault
22	option add *VtkHeightmapViewer.controlBackground gray widgetDefault
23	option add *VtkHeightmapViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkHeightmapViewer.plotBackground black widgetDefault
25	option add *VtkHeightmapViewer.plotForeground white widgetDefault
26	option add *VtkHeightmapViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkHeightmapViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkHeightmapViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkHeightmapViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40	itk_option define -mode mode Mode "contour"
41
42	constructor { hostlist args } {
43	Rappture::VisViewer::constructor $hostlist
44	} {
45	# defined below
46	}
47	destructor {
48	# defined below
49	}
50	public proc SetServerList { namelist } {
51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
52	}
53	public method add {dataobj {settings ""}}
54	public method camera {option args}
55	public method delete {args}
56	public method disconnect {}
57	public method download {option args}
58	public method get {args}
59	public method isconnected {}
60	public method limits3 { dataobj }
61	public method parameters {title args} {
62	# do nothing
63	}
64	public method scale {args}
65
66	protected method Connect {}
67	protected method CurrentDatasets {args}
68	protected method Disconnect {}
69	protected method DoResize {}
70	protected method DoRotate {}
71	protected method AdjustSetting {what {value ""}}
72	protected method AdjustMode {}
73	protected method InitSettings { args }
74	protected method Pan {option x y}
75	protected method Pick {x y}
76	protected method Rebuild {}
77	protected method ReceiveDataset { args }
78	protected method ReceiveImage { args }
79	protected method ReceiveLegend { colormap title min max size }
80	protected method Rotate {option x y}
81	protected method Zoom {option}
82
83	# The following methods are only used by this class.
84	private method BuildAxisTab {}
85	private method BuildCameraTab {}
86	private method BuildColormap { name }
87	private method BuildContourTab {}
88	private method BuildDownloadPopup { widget command }
89	private method Combo { option }
90	private method ConvertToVtkData { dataobj comp }
91	private method DrawLegend {}
92	private method EnterLegend { x y }
93	private method EventuallyRequestLegend {}
94	private method EventuallyResize { w h }
95	private method EventuallyRotate { q }
96	private method GetImage { args }
97	private method GetVtkData { args }
98	private method IsValidObject { dataobj }
99	private method LeaveLegend {}
100	private method MotionLegend { x y }
101	private method PanCamera {}
102	private method RequestLegend {}
103	private method SetCurrentColormap { color }
104	private method SetLegendTip { x y }
105	private method SetObjectStyle { dataobj comp }
106	private method GetHeightmapScale {}
107	private method ResetAxes {}
108
109	private variable _arcball ""
110	private variable _dlist "" ; # list of data objects
111	private variable _obj2datasets
112	private variable _obj2ovride ; # maps dataobj => style override
113	private variable _comp2scale; # maps dataset to the heightmap scale.
114	private variable _datasets ; # contains all the dataobj-component
115	; # datasets in the server
116	private variable _colormaps ; # contains all the colormaps
117	; # in the server.
118
119	# The name of the current colormap used. The colormap is global to all
120	# heightmaps displayed.
121	private variable _currentColormap "" ;
122	private variable _currentNumIsolines "" ;
123	private variable _currentOpacity "" ;
124
125	private variable _click ; # info used for rotate operations
126	private variable _limits ; # Holds overall limits for all dataobjs
127	# using the viewer.
128	private variable _view ; # view params for 3D view
129	private variable _settings
130	private variable _changed
131	private variable _initialStyle ""; # First found style in dataobjects.
132	private variable _reset 1; # Indicates if camera needs to be reset
133	# to starting position.
134	private variable _beforeConnect 1; # Indicates if camera needs to be reset
135	# to starting position.
136
137	private variable _first "" ; # This is the topmost dataset.
138	private variable _start 0
139	private variable _isolines
140
141	common _downloadPopup; # download options from popup
142	private common _hardcopy
143	private variable _width 0
144	private variable _height 0
145	private variable _legendWidth 0
146	private variable _legendHeight 0
147	private variable _resizePending 0
148	private variable _rotatePending 0
149	private variable _legendPending 0
150	private variable _fieldNames {}
151	private variable _fields
152	private variable _curFldName ""
153	private variable _curFldLabel ""
154	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
155	}
156
157	itk::usual VtkHeightmapViewer {
158	keep -background -foreground -cursor -font
159	keep -plotbackground -plotforeground -mode
160	}
161
162	# ----------------------------------------------------------------------
163	# CONSTRUCTOR
164	# ----------------------------------------------------------------------
165	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
166	set _serverType "vtkvis"
167
168	EnableWaitDialog 1000
169	# Rebuild event
170	$_dispatcher register !rebuild
171	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
172
173	# Resize event
174	$_dispatcher register !resize
175	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
176
177	# Rotate event
178	$_dispatcher register !rotate
179	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
180
181	# Legend event
182	$_dispatcher register !legend
183	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
184
185	#
186	# Populate parser with commands handle incoming requests
187	#
188	$_parser alias image [itcl::code $this ReceiveImage]
189	$_parser alias dataset [itcl::code $this ReceiveDataset]
190	$_parser alias legend [itcl::code $this ReceiveLegend]
191
192	# Initialize the view to some default parameters.
193	array set _view {
194	qw 0.36
195	qx 0.25
196	qy 0.50
197	qz 0.70
198	zoom 1.0
199	xpan 0
200	ypan 0
201	ortho 1
202	}
203	set _arcball [blt::arcball create 100 100]
204	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
205	$_arcball quaternion $q
206
207	array set _settings {
208	axisFlymode "static"
209	axisMinorTicks 1
210	stretchToFit 0
211	axisLabels 1
212	axisVisible 1
213	axisXGrid 0
214	axisYGrid 0
215	axisZGrid 0
216	colormapVisible 1
217	edges 0
218	field "Default"
219	heightmapScale 50
220	isHeightmap 0
221	isolineColor black
222	isolinesVisible 1
223	legendVisible 1
224	lighting 1
225	saveLighting 1
226	numIsolines 10
227	opacity 100
228	outline 0
229	wireframe 0
230	saveOpacity 100
231	}
232	array set _changed {
233	opacity 0
234	colormap 0
235	numIsolines 0
236	}
237	itk_component add view {
238	canvas $itk_component(plotarea).view \
239	-highlightthickness 0 -borderwidth 0
240	} {
241	usual
242	ignore -highlightthickness -borderwidth -background
243	}
244
245	itk_component add fieldmenu {
246	menu $itk_component(plotarea).menu \
247	-relief flat \
248	-tearoff no
249	} {
250	usual
251	ignore -background -foreground -relief -tearoff
252	}
253	set c $itk_component(view)
254	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
255	bind $c <4> [itcl::code $this Zoom in 0.25]
256	bind $c <5> [itcl::code $this Zoom out 0.25]
257	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
258	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
259	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
260	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
261	bind $c <Enter> "focus %W"
262	bind $c <Control-F1> [itcl::code $this ToggleConsole]
263
264	# Fix the scrollregion in case we go off screen
265	$c configure -scrollregion [$c bbox all]
266
267	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
268	set _map(cwidth) -1
269	set _map(cheight) -1
270	set _map(zoom) 1.0
271	set _map(original) ""
272
273	set f [$itk_component(main) component controls]
274	itk_component add reset {
275	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
276	-highlightthickness 0 \
277	-image [Rappture::icon reset-view] \
278	-command [itcl::code $this Zoom reset]
279	} {
280	usual
281	ignore -highlightthickness
282	}
283	pack $itk_component(reset) -side top -padx 2 -pady 2
284	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
285
286	itk_component add zoomin {
287	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
288	-highlightthickness 0 \
289	-image [Rappture::icon zoom-in] \
290	-command [itcl::code $this Zoom in]
291	} {
292	usual
293	ignore -highlightthickness
294	}
295	pack $itk_component(zoomin) -side top -padx 2 -pady 2
296	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
297
298	itk_component add zoomout {
299	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
300	-highlightthickness 0 \
301	-image [Rappture::icon zoom-out] \
302	-command [itcl::code $this Zoom out]
303	} {
304	usual
305	ignore -highlightthickness
306	}
307	pack $itk_component(zoomout) -side top -padx 2 -pady 2
308	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
309
310	itk_component add mode {
311	Rappture::PushButton $f.mode \
312	-onimage [Rappture::icon surface] \
313	-offimage [Rappture::icon surface] \
314	-variable [itcl::scope _settings(isHeightmap)] \
315	-command [itcl::code $this AdjustSetting isHeightmap] \
316	}
317	Rappture::Tooltip::for $itk_component(mode) \
318	"Toggle the surface/contour on/off"
319	pack $itk_component(mode) -padx 2 -pady 2
320
321	if { [catch {
322	BuildContourTab
323	BuildAxisTab
324	BuildCameraTab
325	} errs] != 0 } {
326	global errorInfo
327	puts stderr "errs=$errs errorInfo=$errorInfo"
328	}
329	set _image(legend) [image create photo]
330
331	# Hack around the Tk panewindow. The problem is that the requested
332	# size of the 3d view isn't set until an image is retrieved from
333	# the server. So the panewindow uses the tiny size.
334	set w 10000
335	pack forget $itk_component(view)
336	blt::table $itk_component(plotarea) \
337	0,0 $itk_component(view) -fill both -reqwidth $w
338	blt::table configure $itk_component(plotarea) c1 -resize none
339
340	# Bindings for panning via mouse
341	bind $itk_component(view) <ButtonPress-2> \
342	[itcl::code $this Pan click %x %y]
343	bind $itk_component(view) <B2-Motion> \
344	[itcl::code $this Pan drag %x %y]
345	bind $itk_component(view) <ButtonRelease-2> \
346	[itcl::code $this Pan release %x %y]
347
348	#bind $itk_component(view) <ButtonRelease-3> \
349	# [itcl::code $this Pick %x %y]
350
351	# Bindings for panning via keyboard
352	bind $itk_component(view) <KeyPress-Left> \
353	[itcl::code $this Pan set -10 0]
354	bind $itk_component(view) <KeyPress-Right> \
355	[itcl::code $this Pan set 10 0]
356	bind $itk_component(view) <KeyPress-Up> \
357	[itcl::code $this Pan set 0 -10]
358	bind $itk_component(view) <KeyPress-Down> \
359	[itcl::code $this Pan set 0 10]
360	bind $itk_component(view) <Shift-KeyPress-Left> \
361	[itcl::code $this Pan set -2 0]
362	bind $itk_component(view) <Shift-KeyPress-Right> \
363	[itcl::code $this Pan set 2 0]
364	bind $itk_component(view) <Shift-KeyPress-Up> \
365	[itcl::code $this Pan set 0 -2]
366	bind $itk_component(view) <Shift-KeyPress-Down> \
367	[itcl::code $this Pan set 0 2]
368
369	# Bindings for zoom via keyboard
370	bind $itk_component(view) <KeyPress-Prior> \
371	[itcl::code $this Zoom out]
372	bind $itk_component(view) <KeyPress-Next> \
373	[itcl::code $this Zoom in]
374
375	bind $itk_component(view) <Enter> "focus $itk_component(view)"
376
377	if {[string equal "x11" [tk windowingsystem]]} {
378	# Bindings for zoom via mouse
379	bind $itk_component(view) <4> [itcl::code $this Zoom out]
380	bind $itk_component(view) <5> [itcl::code $this Zoom in]
381	}
382
383	set _image(download) [image create photo]
384
385	eval itk_initialize $args
386	Connect
387	set _beforeConnect 0
388	}
389
390	# ----------------------------------------------------------------------
391	# DESTRUCTOR
392	# ----------------------------------------------------------------------
393	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
394	Disconnect
395	image delete $_image(plot)
396	image delete $_image(download)
397	catch { blt::arcball destroy $_arcball }
398	}
399
400	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
401	if { $_width < 2 } {
402	set _width 500
403	}
404	if { $_height < 2 } {
405	set _height 500
406	}
407	set _start [clock clicks -milliseconds]
408	SendCmd "screen size [expr $_width - 20] $_height"
409
410	set font "Arial 8"
411	set lh [font metrics $font -linespace]
412	set h [expr {$_height - 2 * ($lh + 2)}]
413	if { $h != $_legendHeight } {
414	EventuallyRequestLegend
415	} else {
416	DrawLegend
417	}
418	set _resizePending 0
419	}
420
421	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
422	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
423	SendCmd "camera orient $q"
424	set _rotatePending 0
425	}
426
427	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
428	if { !$_legendPending } {
429	set _legendPending 1
430	$_dispatcher event -idle !legend
431	}
432	}
433
434	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
435	set _width $w
436	set _height $h
437	$_arcball resize $w $h
438	if { !$_resizePending } {
439	set _resizePending 1
440	$_dispatcher event -after 250 !resize
441	}
442	}
443
444	set rotate_delay 100
445
446	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
447	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
448	if { !$_rotatePending } {
449	set _rotatePending 1
450	global rotate_delay
451	$_dispatcher event -after $rotate_delay !rotate
452	}
453	}
454
455	# ----------------------------------------------------------------------
456	# USAGE: add <dataobj> ?<settings>?
457	#
458	# Clients use this to add a data object to the plot. The optional
459	# <settings> are used to configure the plot. Allowed settings are
460	# -color, -brightness, -width, -linestyle, and -raise.
461	# ----------------------------------------------------------------------
462	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
463	array set params {
464	-color auto
465	-width 1
466	-linestyle solid
467	-brightness 0
468	-raise 0
469	-description ""
470	-param ""
471	-type ""
472	}
473	array set params $settings
474	set params(-description) ""
475	set params(-param) ""
476	foreach {opt val} $settings {
477	if {![info exists params($opt)]} {
478	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
479	}
480	set params($opt) $val
481	}
482	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
483	# can't handle -autocolors yet
484	set params(-color) white
485	}
486	set pos [lsearch -exact $dataobj $_dlist]
487	if {$pos < 0} {
488	lappend _dlist $dataobj
489	}
490	set _obj2ovride($dataobj-color) $params(-color)
491	set _obj2ovride($dataobj-width) $params(-width)
492	set _obj2ovride($dataobj-raise) $params(-raise)
493	$_dispatcher event -idle !rebuild
494	}
495
496
497	# ----------------------------------------------------------------------
498	# USAGE: delete ?<dataobj1> <dataobj2> ...?
499	#
500	# Clients use this to delete a dataobj from the plot. If no dataobjs
501	# are specified, then all dataobjs are deleted. No data objects are
502	# deleted. They are only removed from the display list.
503	#
504	# ----------------------------------------------------------------------
505	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
506	if { [llength $args] == 0} {
507	set args $_dlist
508	}
509	# Delete all specified dataobjs
510	set changed 0
511	foreach dataobj $args {
512	set pos [lsearch -exact $_dlist $dataobj]
513	if { $pos < 0 } {
514	continue; # Don't know anything about it.
515	}
516	# Remove it from the dataobj list.
517	set _dlist [lreplace $_dlist $pos $pos]
518	array unset _obj2ovride $dataobj-*
519	array unset _settings $dataobj-*
520	# Append to the end of the dataobj list.
521	#lappend _dlist $dataobj
522	set changed 1
523	}
524	# If anything changed, then rebuild the plot
525	if { $changed } {
526	$_dispatcher event -idle !rebuild
527	}
528	}
529
530	# ----------------------------------------------------------------------
531	# USAGE: get ?-objects?
532	# USAGE: get ?-visible?
533	# USAGE: get ?-image view?
534	#
535	# Clients use this to query the list of objects being plotted, in
536	# order from bottom to top of this result. The optional "-image"
537	# flag can also request the internal images being shown.
538	# ----------------------------------------------------------------------
539	itcl::body Rappture::VtkHeightmapViewer::get {args} {
540	if {[llength $args] == 0} {
541	set args "-objects"
542	}
543
544	set op [lindex $args 0]
545	switch -- $op {
546	"-objects" {
547	# put the dataobj list in order according to -raise options
548	set dlist {}
549	foreach dataobj $_dlist {
550	if { ![IsValidObject $dataobj] } {
551	continue
552	}
553	if {[info exists _obj2ovride($dataobj-raise)] &&
554	$_obj2ovride($dataobj-raise)} {
555	set dlist [linsert $dlist 0 $dataobj]
556	} else {
557	lappend dlist $dataobj
558	}
559	}
560	return $dlist
561	}
562	"-visible" {
563	set dlist {}
564	foreach dataobj $_dlist {
565	if { ![IsValidObject $dataobj] } {
566	continue
567	}
568	if { ![info exists _obj2ovride($dataobj-raise)] } {
569	# No setting indicates that the object isn't visible.
570	continue
571	}
572	# Otherwise use the -raise parameter to put the object to
573	# the front of the list.
574	if { $_obj2ovride($dataobj-raise) } {
575	set dlist [linsert $dlist 0 $dataobj]
576	} else {
577	lappend dlist $dataobj
578	}
579	}
580	return $dlist
581	}
582	-image {
583	if {[llength $args] != 2} {
584	error "wrong # args: should be \"get -image view\""
585	}
586	switch -- [lindex $args end] {
587	view {
588	return $_image(plot)
589	}
590	default {
591	error "bad image name \"[lindex $args end]\": should be view"
592	}
593	}
594	}
595	default {
596	error "bad option \"$op\": should be -objects or -image"
597	}
598	}
599	}
600
601	#
602	# scale --
603	#
604	# This gets called either incrementally as new simulations are
605	# added or all at once as a sequence of heightmaps.
606	# This accounts for all objects--even those not showing on the
607	# screen. Because of this, the limits are appropriate for all
608	# objects as the user scans through data in the ResultSet viewer.
609	#
610	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
611	foreach dataobj $args {
612	foreach axis { x y } {
613	set lim [$dataobj limits $axis]
614	if { ![info exists _limits($axis)] } {
615	set _limits($axis) $lim
616	continue
617	}
618	foreach {min max} $lim break
619	foreach {amin amax} $_limits($axis) break
620	if { $amin > $min } {
621	set amin $min
622	}
623	if { $amax < $max } {
624	set amax $max
625	}
626	set _limits($axis) [list $amin $amax]
627	}
628	foreach { fname lim } [$dataobj fieldlimits] {
629	if { ![info exists _limits($fname)] } {
630	set _limits($fname) $lim
631	continue
632	}
633	foreach {min max} $lim break
634	foreach {fmin fmax} $_limits($fname) break
635	if { $fmin > $min } {
636	set fmin $min
637	}
638	if { $fmax < $max } {
639	set fmax $max
640	}
641	set _limits($fname) [list $fmin $fmax]
642	}
643	}
644	}
645
646	# ----------------------------------------------------------------------
647	# USAGE: download coming
648	# USAGE: download controls <downloadCommand>
649	# USAGE: download now
650	#
651	# Clients use this method to create a downloadable representation
652	# of the plot. Returns a list of the form {ext string}, where
653	# "ext" is the file extension (indicating the type of data) and
654	# "string" is the data itself.
655	# ----------------------------------------------------------------------
656	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
657	switch $option {
658	coming {
659	if {[catch {
660	blt::winop snap $itk_component(plotarea) $_image(download)
661	}]} {
662	$_image(download) configure -width 1 -height 1
663	$_image(download) put #000000
664	}
665	}
666	controls {
667	set popup .vtkviewerdownload
668	if { ![winfo exists .vtkviewerdownload] } {
669	set inner [BuildDownloadPopup $popup [lindex $args 0]]
670	} else {
671	set inner [$popup component inner]
672	}
673	set _downloadPopup(image_controls) $inner.image_frame
674	set num [llength [get]]
675	set num [expr {($num == 1) ? "1 result" : "$num results"}]
676	set word [Rappture::filexfer::label downloadWord]
677	$inner.summary configure -text "$word $num in the following format:"
678	update idletasks ;# Fix initial sizes
679	return $popup
680	}
681	now {
682	set popup .vtkviewerdownload
683	if {[winfo exists .vtkviewerdownload]} {
684	$popup deactivate
685	}
686	switch -- $_downloadPopup(format) {
687	"image" {
688	return [$this GetImage [lindex $args 0]]
689	}
690	"vtk" {
691	return [$this GetVtkData [lindex $args 0]]
692	}
693	}
694	return ""
695	}
696	default {
697	error "bad option \"$option\": should be coming, controls, now"
698	}
699	}
700	}
701
702	# ----------------------------------------------------------------------
703	# USAGE: Connect ?<host:port>,<host:port>...?
704	#
705	# Clients use this method to establish a connection to a new
706	# server, or to reestablish a connection to the previous server.
707	# Any existing connection is automatically closed.
708	# ----------------------------------------------------------------------
709	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
710	global readyForNextFrame
711	set readyForNextFrame 1
712	set _reset 1
713	set _hosts [GetServerList "vtkvis"]
714	if { "" == $_hosts } {
715	return 0
716	}
717	set result [VisViewer::Connect $_hosts]
718	if { $result } {
719	set w [winfo width $itk_component(view)]
720	set h [winfo height $itk_component(view)]
721	EventuallyResize $w $h
722	}
723	return $result
724	}
725
726	#
727	# isconnected --
728	#
729	# Indicates if we are currently connected to the visualization server.
730	#
731	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
732	return [VisViewer::IsConnected]
733	}
734
735	#
736	# disconnect --
737	#
738	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
739	Disconnect
740	set _reset 1
741	}
742
743	#
744	# Disconnect --
745	#
746	# Clients use this method to disconnect from the current rendering
747	# server.
748	#
749	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
750	VisViewer::Disconnect
751
752	$_dispatcher cancel !rebuild
753	$_dispatcher cancel !resize
754	$_dispatcher cancel !rotate
755	$_dispatcher cancel !legend
756	# disconnected -- no more data sitting on server
757	array unset _datasets
758	array unset _data
759	array unset _colormaps
760	array unset _obj2datasets
761	global readyForNextFrame
762	set readyForNextFrame 1
763	}
764
765	# ----------------------------------------------------------------------
766	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
767	#
768	# Invoked automatically whenever the "image" command comes in from
769	# the rendering server. Indicates that binary image data with the
770	# specified <size> will follow.
771	# ----------------------------------------------------------------------
772	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
773	global readyForNextFrame
774	set readyForNextFrame 1
775	array set info {
776	-token "???"
777	-bytes 0
778	-type image
779	}
780	array set info $args
781	set bytes [ReceiveBytes $info(-bytes)]
782	if { $info(-type) == "image" } {
783	if 0 {
784	set f [open "last.ppm" "w"]
785	puts $f $bytes
786	close $f
787	}
788	$_image(plot) configure -data $bytes
789	set time [clock seconds]
790	set date [clock format $time]
791	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
792	if { $_start > 0 } {
793	set finish [clock clicks -milliseconds]
794	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
795	set _start 0
796	}
797	} elseif { $info(type) == "print" } {
798	set tag $this-print-$info(-token)
799	set _hardcopy($tag) $bytes
800	}
801	}
802
803	#
804	# ReceiveDataset --
805	#
806	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
807	if { ![isconnected] } {
808	return
809	}
810	set option [lindex $args 0]
811	switch -- $option {
812	"scalar" {
813	set option [lindex $args 1]
814	switch -- $option {
815	"world" {
816	foreach { x y z value tag } [lrange $args 2 end] break
817	}
818	"pixel" {
819	foreach { x y value tag } [lrange $args 2 end] break
820	}
821	}
822	}
823	"vector" {
824	set option [lindex $args 1]
825	switch -- $option {
826	"world" {
827	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
828	}
829	"pixel" {
830	foreach { x y vx vy vz tag } [lrange $args 2 end] break
831	}
832	}
833	}
834	"names" {
835	foreach { name } [lindex $args 1] {
836	#puts stderr "Dataset: $name"
837	}
838	}
839	default {
840	error "unknown dataset option \"$option\" from server"
841	}
842	}
843	}
844
845	# ----------------------------------------------------------------------
846	# USAGE: Rebuild
847	#
848	# Called automatically whenever something changes that affects the
849	# data in the widget. Clears any existing data and rebuilds the
850	# widget to display new data.
851	# ----------------------------------------------------------------------
852	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
853	set w [winfo width $itk_component(view)]
854	set h [winfo height $itk_component(view)]
855	if { $w < 2 \|\| $h < 2 } {
856	$_dispatcher event -idle !rebuild
857	return
858	}
859
860	StartBufferingCommands
861	# Turn on buffering of commands to the server. We don't want to
862	# be preempted by a server disconnect/reconnect (which automatically
863	# generates a new call to Rebuild).
864	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
865	set _width $w
866	set _height $h
867	$_arcball resize $w $h
868	DoResize
869	if { $_settings(stretchToFit) } {
870	AdjustSetting stretchToFit
871	}
872	}
873	if { $_reset } {
874	if { $_reportClientInfo } {
875	# Tell the server the name of the tool, the version, and dataset
876	# that we are rendering. Have to do it here because we don't know
877	# what data objects are using the renderer until be get here.
878	global env
879
880	set info {}
881	set user "???"
882	if { [info exists env(USER)] } {
883	set user $env(USER)
884	}
885	set session "???"
886	if { [info exists env(SESSION)] } {
887	set session $env(SESSION)
888	}
889	lappend info "hub" [exec hostname]
890	lappend info "client" "vtkheightmapviewer"
891	lappend info "user" $user
892	lappend info "session" $session
893	SendCmd "clientinfo [list $info]"
894	}
895	InitSettings isHeightmap background
896	#
897	# Reset the camera and other view parameters
898	#
899	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
900	SendCmd "axis lrot z 90"
901	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
902	$_arcball quaternion $q
903	if {$_settings(isHeightmap) } {
904	if { $_view(ortho)} {
905	SendCmd "camera mode ortho"
906	} else {
907	SendCmd "camera mode persp"
908	}
909	SendCmd "camera reset"
910	DoRotate
911	}
912	PanCamera
913	SendCmd "imgflush"
914	}
915
916	set _first ""
917	# Start off with no datasets are visible.
918	SendCmd "dataset visible 0"
919	set scale [GetHeightmapScale]
920	foreach dataobj [get -objects] {
921	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
922	set _first $dataobj
923	}
924	set _obj2datasets($dataobj) ""
925	foreach comp [$dataobj components] {
926	set tag $dataobj-$comp
927	if { ![info exists _datasets($tag)] } {
928	set bytes [$dataobj vtkdata $comp]
929	if 0 {
930	set f [open /tmp/vtkheightmap.vtk "w"]
931	puts $f $bytes
932	close $f
933	}
934	set length [string length $bytes]
935	if { $_reportClientInfo } {
936	set info {}
937	lappend info "tool_id" [$dataobj hints toolId]
938	lappend info "tool_name" [$dataobj hints toolName]
939	lappend info "tool_version" [$dataobj hints toolRevision]
940	lappend info "tool_title" [$dataobj hints toolTitle]
941	lappend info "dataset_label" [$dataobj hints label]
942	lappend info "dataset_size" $length
943	lappend info "dataset_tag" $tag
944	SendCmd [list "clientinfo" $info]
945	}
946	SendCmd "dataset add $tag data follows $length"
947	append _outbuf $bytes
948	set _datasets($tag) 1
949	SetObjectStyle $dataobj $comp
950	}
951	lappend _obj2datasets($dataobj) $tag
952	if { [info exists _obj2ovride($dataobj-raise)] } {
953	# Setting dataset visible enables outline (if enabled)
954	# and heightmap
955	SendCmd "dataset visible 1 $tag"
956	}
957	if { ![info exists _comp2scale($tag)] \|\|
958	$_comp2scale($tag) != $scale } {
959	SendCmd "heightmap heightscale $scale $tag"
960	set _comp2scale($tag) $scale
961	}
962	}
963	}
964	if { $_first != "" } {
965	$itk_component(field) choices delete 0 end
966	$itk_component(fieldmenu) delete 0 end
967	array unset _fields
968	set _curFldName ""
969	foreach cname [$_first components] {
970	foreach fname [$_first fieldnames $cname] {
971	if { [info exists _fields($fname)] } {
972	continue
973	}
974	foreach { label units components } \
975	[$_first fieldinfo $fname] break
976	$itk_component(field) choices insert end "$fname" "$label"
977	$itk_component(fieldmenu) add radiobutton -label "$label" \
978	-value $label -variable [itcl::scope _curFldLabel] \
979	-selectcolor red \
980	-activebackground $itk_option(-plotbackground) \
981	-activeforeground $itk_option(-plotforeground) \
982	-font "Arial 8" \
983	-command [itcl::code $this Combo invoke]
984	set _fields($fname) [list $label $units $components]
985	if { $_curFldName == "" } {
986	set _curFldName $fname
987	set _curFldLabel $label
988	}
989	}
990	}
991	$itk_component(field) value $_curFldLabel
992	}
993	InitSettings stretchToFit
994
995	if { $_reset } {
996	SendCmd "axis tickpos outside"
997	foreach axis { x y z } {
998	SendCmd "axis lformat $axis %g"
999	}
1000
1001	foreach axis { x y z } {
1002	set label [$_first hints ${axis}label]
1003	if { $label == "" } {
1004	if {$axis == "z"} {
1005	if { [string match "component*" $_curFldName] } {
1006	set label [string toupper $axis]
1007	} else {
1008	set label $_curFldLabel
1009	}
1010	} else {
1011	set label [string toupper $axis]
1012	}
1013	}
1014	# May be a space in the axis label.
1015	SendCmd [list axis name $axis $label]
1016
1017	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1018	set units [lindex $_fields($_curFldName) 1]
1019	} else {
1020	set units [$_first hints ${axis}units]
1021	}
1022	if { $units != "" } {
1023	# May be a space in the axis units.
1024	SendCmd [list axis units $axis $units]
1025	}
1026	}
1027	#
1028	# Reset the camera and other view parameters
1029	#
1030	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
1031	SendCmd "dataset color [Color2RGB $itk_option(-plotforeground)]"
1032	ResetAxes
1033	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1034	$_arcball quaternion $q
1035	if {$_settings(isHeightmap) } {
1036	if { $_view(ortho)} {
1037	SendCmd "camera mode ortho"
1038	} else {
1039	SendCmd "camera mode persp"
1040	}
1041	SendCmd "camera reset"
1042	DoRotate
1043	}
1044	PanCamera
1045	InitSettings axisXGrid axisYGrid axisZGrid \
1046	axisVisible axisLabels
1047	InitSettings heightmapScale field isHeightmap
1048	if { [array size _fields] < 2 } {
1049	blt::table forget $itk_component(field) $itk_component(field_l)
1050	}
1051	RequestLegend
1052	set _reset 0
1053	}
1054	global readyForNextFrame
1055	set readyForNextFrame 0; # Don't advance to the next frame
1056
1057	# Actually write the commands to the server socket. If it fails, we don't
1058	# care. We're finished here.
1059	blt::busy hold $itk_component(hull)
1060	StopBufferingCommands
1061	blt::busy release $itk_component(hull)
1062	}
1063
1064	# ----------------------------------------------------------------------
1065	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1066	#
1067	# Returns a list of server IDs for the current datasets being displayed. This
1068	# is normally a single ID, but it might be a list of IDs if the current data
1069	# object has multiple components.
1070	# ----------------------------------------------------------------------
1071	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1072	set flag [lindex $args 0]
1073	switch -- $flag {
1074	"-all" {
1075	if { [llength $args] > 1 } {
1076	error "CurrentDatasets: can't specify dataobj after \"-all\""
1077	}
1078	set dlist [get -objects]
1079	}
1080	"-visible" {
1081	if { [llength $args] > 1 } {
1082	set dlist {}
1083	set args [lrange $args 1 end]
1084	foreach dataobj $args {
1085	if { [info exists _obj2ovride($dataobj-raise)] } {
1086	lappend dlist $dataobj
1087	}
1088	}
1089	} else {
1090	set dlist [get -visible]
1091	}
1092	}
1093	default {
1094	set dlist $args
1095	}
1096	}
1097	set rlist ""
1098	foreach dataobj $dlist {
1099	foreach comp [$dataobj components] {
1100	set tag $dataobj-$comp
1101	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1102	lappend rlist $tag
1103	}
1104	}
1105	}
1106	return $rlist
1107	}
1108
1109	# ----------------------------------------------------------------------
1110	# USAGE: Zoom in
1111	# USAGE: Zoom out
1112	# USAGE: Zoom reset
1113	#
1114	# Called automatically when the user clicks on one of the zoom
1115	# controls for this widget. Changes the zoom for the current view.
1116	# ----------------------------------------------------------------------
1117	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1118	switch -- $option {
1119	"in" {
1120	set _view(zoom) [expr {$_view(zoom)*1.25}]
1121	SendCmd "camera zoom $_view(zoom)"
1122	}
1123	"out" {
1124	set _view(zoom) [expr {$_view(zoom)*0.8}]
1125	SendCmd "camera zoom $_view(zoom)"
1126	}
1127	"reset" {
1128	array set _view {
1129	qw 0.36
1130	qx 0.25
1131	qy 0.50
1132	qz 0.70
1133	zoom 1.0
1134	xpan 0
1135	ypan 0
1136	}
1137	if { $_first != "" } {
1138	set location [$_first hints camera]
1139	if { $location != "" } {
1140	array set _view $location
1141	}
1142	}
1143	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1144	$_arcball quaternion $q
1145	SendCmd "camera reset"
1146	if {$_settings(isHeightmap) } {
1147	DoRotate
1148	}
1149	}
1150	}
1151	}
1152
1153	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1154	set x $_view(xpan)
1155	set y $_view(ypan)
1156	SendCmd "camera pan $x $y"
1157	}
1158
1159
1160	# ----------------------------------------------------------------------
1161	# USAGE: Rotate click <x> <y>
1162	# USAGE: Rotate drag <x> <y>
1163	# USAGE: Rotate release <x> <y>
1164	#
1165	# Called automatically when the user clicks/drags/releases in the
1166	# plot area. Moves the plot according to the user's actions.
1167	# ----------------------------------------------------------------------
1168	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1169	switch -- $option {
1170	"click" {
1171	$itk_component(view) configure -cursor fleur
1172	set _click(x) $x
1173	set _click(y) $y
1174	}
1175	"drag" {
1176	if {[array size _click] == 0} {
1177	Rotate click $x $y
1178	} else {
1179	set w [winfo width $itk_component(view)]
1180	set h [winfo height $itk_component(view)]
1181	if {$w <= 0 \|\| $h <= 0} {
1182	return
1183	}
1184
1185	if {[catch {
1186	# this fails sometimes for no apparent reason
1187	set dx [expr {double($x-$_click(x))/$w}]
1188	set dy [expr {double($y-$_click(y))/$h}]
1189	}]} {
1190	return
1191	}
1192	if { $dx == 0 && $dy == 0 } {
1193	return
1194	}
1195	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1196	EventuallyRotate $q
1197	set _click(x) $x
1198	set _click(y) $y
1199	}
1200	}
1201	"release" {
1202	Rotate drag $x $y
1203	$itk_component(view) configure -cursor ""
1204	catch {unset _click}
1205	}
1206	default {
1207	error "bad option \"$option\": should be click, drag, release"
1208	}
1209	}
1210	}
1211
1212	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1213	foreach tag [CurrentDatasets -visible] {
1214	SendCmd "dataset getscalar pixel $x $y $tag"
1215	}
1216	}
1217
1218	# ----------------------------------------------------------------------
1219	# USAGE: $this Pan click x y
1220	# $this Pan drag x y
1221	# $this Pan release x y
1222	#
1223	# Called automatically when the user clicks on one of the zoom
1224	# controls for this widget. Changes the zoom for the current view.
1225	# ----------------------------------------------------------------------
1226	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1227	switch -- $option {
1228	"set" {
1229	set w [winfo width $itk_component(view)]
1230	set h [winfo height $itk_component(view)]
1231	set x [expr $x / double($w)]
1232	set y [expr $y / double($h)]
1233	set _view(xpan) [expr $_view(xpan) + $x]
1234	set _view(ypan) [expr $_view(ypan) + $y]
1235	PanCamera
1236	return
1237	}
1238	"click" {
1239	set _click(x) $x
1240	set _click(y) $y
1241	$itk_component(view) configure -cursor hand1
1242	}
1243	"drag" {
1244	if { ![info exists _click(x)] } {
1245	set _click(x) $x
1246	}
1247	if { ![info exists _click(y)] } {
1248	set _click(y) $y
1249	}
1250	set w [winfo width $itk_component(view)]
1251	set h [winfo height $itk_component(view)]
1252	set dx [expr ($_click(x) - $x)/double($w)]
1253	set dy [expr ($_click(y) - $y)/double($h)]
1254	set _click(x) $x
1255	set _click(y) $y
1256	set _view(xpan) [expr $_view(xpan) - $dx]
1257	set _view(ypan) [expr $_view(ypan) - $dy]
1258	PanCamera
1259	}
1260	"release" {
1261	Pan drag $x $y
1262	$itk_component(view) configure -cursor ""
1263	}
1264	default {
1265	error "unknown option \"$option\": should set, click, drag, or release"
1266	}
1267	}
1268	}
1269
1270	# ----------------------------------------------------------------------
1271	# USAGE: InitSettings <what> ?<value>?
1272	#
1273	# Used internally to update rendering settings whenever parameters
1274	# change in the popup settings panel. Sends the new settings off
1275	# to the back end.
1276	# ----------------------------------------------------------------------
1277	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1278	foreach spec $args {
1279	if { [info exists _settings($_first-$spec)] } {
1280	# Reset global setting with dataobj specific setting
1281	set _settings($spec) $_settings($_first-$spec)
1282	}
1283	AdjustSetting $spec
1284	}
1285	}
1286
1287	#
1288	# AdjustSetting --
1289	#
1290	# Changes/updates a specific setting in the widget. There are
1291	# usually user-setable option. Commands are sent to the render
1292	# server.
1293	#
1294	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1295	if { $_beforeConnect } {
1296	return
1297	}
1298	switch -- $what {
1299	"axisFlymode" {
1300	set mode [$itk_component(axisflymode) value]
1301	set mode [$itk_component(axisflymode) translate $mode]
1302	set _settings($what) $mode
1303	SendCmd "axis flymode $mode"
1304	}
1305	"axisLabels" {
1306	set bool $_settings(axisLabels)
1307	SendCmd "axis labels all $bool"
1308	}
1309	"axisMinorTicks" {
1310	set bool $_settings(axisMinorTicks)
1311	foreach axis { x y z } {
1312	SendCmd "axis minticks ${axis} $bool"
1313	}
1314	}
1315	"axisVisible" {
1316	set bool $_settings(axisVisible)
1317	SendCmd "axis visible all $bool"
1318	}
1319	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1320	set axis [string tolower [string range $what 4 4]]
1321	set bool $_settings($what)
1322	SendCmd "axis grid $axis $bool"
1323	}
1324	"background" {
1325	set bgcolor [$itk_component(background) value]
1326	array set fgcolors {
1327	"black" "white"
1328	"white" "black"
1329	"grey" "black"
1330	}
1331	configure -plotbackground $bgcolor \
1332	-plotforeground $fgcolors($bgcolor)
1333	$itk_component(view) delete "legend"
1334	DrawLegend
1335	}
1336	"colormap" {
1337	set _changed(colormap) 1
1338	StartBufferingCommands
1339	set color [$itk_component(colormap) value]
1340	set _settings(colormap) $color
1341	if { $color == "none" } {
1342	if { $_settings(colormapVisible) } {
1343	SendCmd "heightmap surface 0"
1344	set _settings(colormapVisible) 0
1345	}
1346	} else {
1347	if { !$_settings(colormapVisible) } {
1348	SendCmd "heightmap surface 1"
1349	set _settings(colormapVisible) 1
1350	}
1351	SetCurrentColormap $color
1352	}
1353	#SendCmd "heightmap colormode scalar $_curFldName"
1354	#SendCmd "dataset scalar $_curFldName"
1355	StopBufferingCommands
1356	EventuallyRequestLegend
1357	}
1358	"colormapVisible" {
1359	set bool $_settings($what)
1360	SendCmd "heightmap surface $bool"
1361	}
1362	"edges" {
1363	set bool $_settings(edges)
1364	SendCmd "heightmap edges $bool"
1365	}
1366	"field" {
1367	set label [$itk_component(field) value]
1368	set fname [$itk_component(field) translate $label]
1369	set _settings(field) $fname
1370	if { [info exists _fields($fname)] } {
1371	foreach { label units components } $_fields($fname) break
1372	if { $components > 1 } {
1373	set _colorMode vmag
1374	} else {
1375	set _colorMode scalar
1376	}
1377	set _curFldName $fname
1378	set _curFldLabel $label
1379	} else {
1380	puts stderr "unknown field \"$fname\""
1381	return
1382	}
1383	set label [$_first hints zlabel]
1384	if { $label == "" } {
1385	if { [string match "component*" $_curFldName] } {
1386	set label Z
1387	} else {
1388	set label $_curFldLabel
1389	}
1390	} else {
1391	set label Z
1392	}
1393	# May be a space in the axis label.
1394	SendCmd [list axis name z $label]
1395
1396	if { [$_first hints zunits] == "" } {
1397	set units [lindex $_fields($_curFldName) 1]
1398	} else {
1399	set units [$_first hints zunits]
1400	}
1401	if { $units != "" } {
1402	# May be a space in the axis units.
1403	SendCmd [list axis units z $units]
1404	}
1405	# Get the new limits because the field changed.
1406	ResetAxes
1407	SendCmd "dataset scalar $_curFldName"
1408	SendCmd "heightmap colormode scalar $_curFldName"
1409	SendCmd "camera reset"
1410	DrawLegend
1411	}
1412	"heightmapScale" {
1413	if { $_settings(isHeightmap) } {
1414	set scale [GetHeightmapScale]
1415	foreach dataset [CurrentDatasets -all] {
1416	SendCmd "heightmap heightscale $scale $dataset"
1417	set _comp2scale($dataset) $scale
1418	}
1419	ResetAxes
1420	}
1421	}
1422	"isHeightmap" {
1423	set bool $_settings(isHeightmap)
1424	set c $itk_component(view)
1425	StartBufferingCommands
1426	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1427	if { $bool } {
1428	set _settings(heightmapScale) 50
1429	set _settings(opacity) $_settings(saveOpacity)
1430	set _settings(lighting) $_settings(saveLighting)
1431	} else {
1432	set _settings(heightmapScale) 0
1433	set _settings(lighting) 0
1434	set _settings(opacity) 100
1435	}
1436	AdjustSetting lighting
1437	AdjustSetting opacity
1438	set scale [GetHeightmapScale]
1439	foreach dataset [CurrentDatasets -all] {
1440	SendCmd "heightmap heightscale $scale $dataset"
1441	set _comp2scale($dataset) $scale
1442	}
1443	if { $bool } {
1444	$itk_component(lighting) configure -state normal
1445	$itk_component(opacity) configure -state normal
1446	$itk_component(scale) configure -state normal
1447	$itk_component(opacity_l) configure -state normal
1448	$itk_component(scale_l) configure -state normal
1449	if {$_view(ortho)} {
1450	SendCmd "camera mode ortho"
1451	} else {
1452	SendCmd "camera mode persp"
1453	}
1454	} else {
1455	$itk_component(lighting) configure -state disabled
1456	$itk_component(opacity) configure -state disabled
1457	$itk_component(scale) configure -state disabled
1458	$itk_component(opacity_l) configure -state disabled
1459	$itk_component(scale_l) configure -state disabled
1460	SendCmd "camera mode image"
1461	}
1462	if {$_settings(stretchToFit)} {
1463	if {$scale == 0} {
1464	SendCmd "camera aspect window"
1465	} else {
1466	SendCmd "camera aspect square"
1467	}
1468	}
1469	ResetAxes
1470	SendCmd "camera reset"
1471	if { $bool } {
1472	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1473	$_arcball quaternion $q
1474	SendCmd "camera orient $q"
1475	} else {
1476	bind $c <ButtonPress-1> {}
1477	bind $c <B1-Motion> {}
1478	bind $c <ButtonRelease-1> {}
1479	}
1480	# Fix the mouse bindings for rotation/panning and the
1481	# camera mode. Ideally we'd create a bindtag for these.
1482	if { $bool } {
1483	# Bindings for rotation via mouse
1484	bind $c <ButtonPress-1> \
1485	[itcl::code $this Rotate click %x %y]
1486	bind $c <B1-Motion> \
1487	[itcl::code $this Rotate drag %x %y]
1488	bind $c <ButtonRelease-1> \
1489	[itcl::code $this Rotate release %x %y]
1490	}
1491	StopBufferingCommands
1492	}
1493	"isolineColor" {
1494	set color [$itk_component(isolinecolor) value]
1495	if { $color == "none" } {
1496	if { $_settings(isolinesVisible) } {
1497	SendCmd "heightmap isolines 0"
1498	set _settings(isolinesVisible) 0
1499	}
1500	} else {
1501	if { !$_settings(isolinesVisible) } {
1502	SendCmd "heightmap isolines 1"
1503	set _settings(isolinesVisible) 1
1504	}
1505	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1506	}
1507	DrawLegend
1508	}
1509	"isolinesVisible" {
1510	set bool $_settings($what)
1511	SendCmd "heightmap isolines $bool"
1512	DrawLegend
1513	}
1514	"legendVisible" {
1515	if { !$_settings($what) } {
1516	$itk_component(view) delete legend
1517	}
1518	DrawLegend
1519	}
1520	"lighting" {
1521	if { $_settings(isHeightmap) } {
1522	set _settings(saveLighting) $_settings(lighting)
1523	set bool $_settings($what)
1524	SendCmd "heightmap lighting $bool"
1525	} else {
1526	SendCmd "heightmap lighting 0"
1527	}
1528	}
1529	"numIsolines" {
1530	set _changed(numIsolines) 1
1531	set _settings(numIsolines) [$itk_component(numisolines) value]
1532	set _currentNumIsolines $_settings(numIsolines)
1533	SendCmd "heightmap numcontours $_settings(numIsolines)"
1534	DrawLegend
1535	}
1536	"opacity" {
1537	set _changed(opacity) 1
1538	if { $_settings(isHeightmap) } {
1539	set _settings(saveOpacity) $_settings(opacity)
1540	set val $_settings(opacity)
1541	set sval [expr { 0.01 * double($val) }]
1542	SendCmd "heightmap opacity $sval"
1543	} else {
1544	SendCmd "heightmap opacity 1"
1545	}
1546	}
1547	"outline" {
1548	set bool $_settings($what)
1549	SendCmd "dataset outline $bool"
1550	}
1551	"stretchToFit" {
1552	set bool $_settings($what)
1553	if { $bool } {
1554	set heightScale [GetHeightmapScale]
1555	if {$heightScale == 0} {
1556	SendCmd "camera aspect window"
1557	} else {
1558	SendCmd "camera aspect square"
1559	}
1560	} else {
1561	SendCmd "camera aspect native"
1562	}
1563	}
1564	"wireframe" {
1565	set bool $_settings($what)
1566	SendCmd "heightmap wireframe $bool"
1567	}
1568	default {
1569	error "don't know how to fix $what"
1570	}
1571	}
1572	}
1573
1574	#
1575	# RequestLegend --
1576	#
1577	# Request a new legend from the server. The size of the legend
1578	# is determined from the height of the canvas.
1579	#
1580	# This should be called when
1581	# 1. A new current colormap is set.
1582	# 2. Window is resized.
1583	# 3. The limits of the data have changed. (Just need a redraw).
1584	# 4. Number of isolines have changed. (Just need a redraw).
1585	# 5. Legend becomes visible (Just need a redraw).
1586	#
1587	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1588	set _legendPending 0
1589	set font "Arial 8"
1590	set w 12
1591	set lineht [font metrics $font -linespace]
1592	# color ramp height = (canvas height) - (min and max value lines) - 2
1593	set h [expr {$_height - 2 * ($lineht + 2)}]
1594	set _legendHeight $h
1595
1596	set fname $_curFldName
1597	if { [string match "component*" $fname] } {
1598	set title ""
1599	} else {
1600	if { [info exists _fields($fname)] } {
1601	foreach { title units } $_fields($fname) break
1602	if { $units != "" } {
1603	set title [format "%s (%s)" $title $units]
1604	}
1605	} else {
1606	set title $fname
1607	}
1608	}
1609	# If there's a title too, substract one more line
1610	if { $title != "" } {
1611	incr h -$lineht
1612	}
1613	if { $h < 1} {
1614	return
1615	}
1616	# Set the legend on the first heightmap dataset.
1617	if { $_currentColormap != "" } {
1618	set cmap $_currentColormap
1619	SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1620	#SendCmd "heightmap colormode scalar $_curFldName"
1621	#SendCmd "dataset scalar $_curFldName"
1622	}
1623	}
1624
1625	#
1626	# ResetAxes --
1627	#
1628	# Set axis z bounds and range
1629	#
1630	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1631	if { ![info exists _limits($_curFldName)]} {
1632	SendCmd "dataset maprange all"
1633	SendCmd "axis autorange z on"
1634	SendCmd "axis autobounds z on"
1635	return
1636	}
1637	foreach { xmin xmax } $_limits(x) break
1638	foreach { ymin ymax } $_limits(y) break
1639	foreach { vmin vmax } $_limits($_curFldName) break
1640
1641	global tcl_precision
1642	set tcl_precision 17
1643	set xr [expr $xmax - $xmin]
1644	set yr [expr $ymax - $ymin]
1645	set vr [expr $vmax - $vmin]
1646	set r [expr ($yr > $xr) ? $yr : $xr]
1647	if { $vr < 1.0e-17 } {
1648	set dataScale 1.0
1649	} else {
1650	set dataScale [expr $r / $vr]
1651	}
1652	set heightScale [GetHeightmapScale]
1653	set bmin [expr $heightScale * $dataScale * $vmin]
1654	set bmax [expr $heightScale * $dataScale * $vmax]
1655	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1656	SendCmd "axis bounds z $bmin $bmax"
1657	SendCmd "axis range z $_limits($_curFldName)"
1658	}
1659
1660	#
1661	# SetCurrentColormap --
1662	#
1663	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1664	# Keep track of the colormaps that we build.
1665	if { ![info exists _colormaps($name)] } {
1666	BuildColormap $name
1667	set _colormaps($name) 1
1668	}
1669	set _currentColormap $name
1670	SendCmd "heightmap colormap $_currentColormap"
1671	}
1672
1673
1674	#
1675	# BuildColormap --
1676	#
1677	# Build the designated colormap on the server.
1678	#
1679	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1680	set cmap [ColorsToColormap $name]
1681	if { [llength $cmap] == 0 } {
1682	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1683	}
1684	set wmap "0.0 1.0 1.0 1.0"
1685	SendCmd "colormap add $name { $cmap } { $wmap }"
1686	}
1687
1688	# ----------------------------------------------------------------------
1689	# CONFIGURATION OPTION: -mode
1690	# ----------------------------------------------------------------------
1691	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1692	switch -- $itk_option(-mode) {
1693	"heightmap" {
1694	set _settings(isHeightmap) 1
1695	}
1696	"contour" {
1697	set _settings(isHeightmap) 0
1698	}
1699	default {
1700	error "unknown mode settings \"$itk_option(-mode)\""
1701	}
1702	}
1703	AdjustSetting isHeightmap
1704	}
1705
1706	# ----------------------------------------------------------------------
1707	# CONFIGURATION OPTION: -plotbackground
1708	# ----------------------------------------------------------------------
1709	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1710	if { [isconnected] } {
1711	set rgb [Color2RGB $itk_option(-plotbackground)]
1712	SendCmd "screen bgcolor $rgb"
1713	$itk_component(view) configure -background $itk_option(-plotbackground)
1714	}
1715	}
1716
1717	# ----------------------------------------------------------------------
1718	# CONFIGURATION OPTION: -plotforeground
1719	# ----------------------------------------------------------------------
1720	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1721	if { [isconnected] } {
1722	set rgb [Color2RGB $itk_option(-plotforeground)]
1723	SendCmd "dataset color $rgb"
1724	SendCmd "axis color all $rgb"
1725	}
1726	}
1727
1728	itcl::body Rappture::VtkHeightmapViewer::limits3 { dataobj } {
1729	lappend limits x [$dataobj limits x]
1730	lappend limits y [$dataobj limits y]
1731	if { [catch { $dataobj limits $_curFldName } vlim] != 0 } {
1732	set vlim [$dataobj limits v]
1733	}
1734	lappend limits v $vlim
1735	return $limits
1736	}
1737
1738	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1739
1740	set fg [option get $itk_component(hull) font Font]
1741	#set bfg [option get $itk_component(hull) boldFont Font]
1742
1743	set inner [$itk_component(main) insert end \
1744	-title "Contour/Surface Settings" \
1745	-icon [Rappture::icon contour]]
1746	$inner configure -borderwidth 4
1747
1748	checkbutton $inner.legend \
1749	-text "Legend" \
1750	-variable [itcl::scope _settings(legendVisible)] \
1751	-command [itcl::code $this AdjustSetting legendVisible] \
1752	-font "Arial 9"
1753
1754	checkbutton $inner.wireframe \
1755	-text "Wireframe" \
1756	-variable [itcl::scope _settings(wireframe)] \
1757	-command [itcl::code $this AdjustSetting wireframe] \
1758	-font "Arial 9"
1759
1760	itk_component add lighting {
1761	checkbutton $inner.lighting \
1762	-text "Enable Lighting" \
1763	-variable [itcl::scope _settings(lighting)] \
1764	-command [itcl::code $this AdjustSetting lighting] \
1765	-font "Arial 9"
1766	} {
1767	ignore -font
1768	}
1769	checkbutton $inner.edges \
1770	-text "Edges" \
1771	-variable [itcl::scope _settings(edges)] \
1772	-command [itcl::code $this AdjustSetting edges] \
1773	-font "Arial 9"
1774
1775	checkbutton $inner.outline \
1776	-text "Outline" \
1777	-variable [itcl::scope _settings(outline)] \
1778	-command [itcl::code $this AdjustSetting outline] \
1779	-font "Arial 9"
1780
1781	checkbutton $inner.stretch \
1782	-text "Stretch to fit" \
1783	-variable [itcl::scope _settings(stretchToFit)] \
1784	-command [itcl::code $this AdjustSetting stretchToFit] \
1785	-font "Arial 9"
1786
1787	checkbutton $inner.isolines \
1788	-text "Isolines" \
1789	-variable [itcl::scope _settings(isolinesVisible)] \
1790	-command [itcl::code $this AdjustSetting isolinesVisible] \
1791	-font "Arial 9"
1792
1793	itk_component add field_l {
1794	label $inner.field_l -text "Field" -font "Arial 9"
1795	} {
1796	ignore -font
1797	}
1798	itk_component add field {
1799	Rappture::Combobox $inner.field -width 10 -editable no
1800	}
1801	bind $inner.field <<Value>> \
1802	[itcl::code $this AdjustSetting field]
1803
1804	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1805	itk_component add colormap {
1806	Rappture::Combobox $inner.colormap -width 10 -editable no
1807	}
1808	$inner.colormap choices insert end \
1809	"BCGYR" "BCGYR" \
1810	"BGYOR" "BGYOR" \
1811	"blue" "blue" \
1812	"blue-to-brown" "blue-to-brown" \
1813	"blue-to-orange" "blue-to-orange" \
1814	"blue-to-grey" "blue-to-grey" \
1815	"green-to-magenta" "green-to-magenta" \
1816	"greyscale" "greyscale" \
1817	"nanohub" "nanohub" \
1818	"rainbow" "rainbow" \
1819	"spectral" "spectral" \
1820	"ROYGB" "ROYGB" \
1821	"RYGCB" "RYGCB" \
1822	"brown-to-blue" "brown-to-blue" \
1823	"grey-to-blue" "grey-to-blue" \
1824	"orange-to-blue" "orange-to-blue" \
1825	"none" "none"
1826
1827	$itk_component(colormap) value "BCGYR"
1828	bind $inner.colormap <<Value>> \
1829	[itcl::code $this AdjustSetting colormap]
1830
1831	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1832	itk_component add isolinecolor {
1833	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1834	}
1835	$inner.isolinecolor choices insert end \
1836	"black" "black" \
1837	"blue" "blue" \
1838	"cyan" "cyan" \
1839	"green" "green" \
1840	"grey" "grey" \
1841	"magenta" "magenta" \
1842	"orange" "orange" \
1843	"red" "red" \
1844	"white" "white" \
1845	"none" "none"
1846
1847	$itk_component(isolinecolor) value "black"
1848	bind $inner.isolinecolor <<Value>> \
1849	[itcl::code $this AdjustSetting isolineColor]
1850
1851	label $inner.background_l -text "Background Color" -font "Arial 9"
1852	itk_component add background {
1853	Rappture::Combobox $inner.background -width 10 -editable no
1854	}
1855	$inner.background choices insert end \
1856	"black" "black" \
1857	"white" "white" \
1858	"grey" "grey"
1859
1860	$itk_component(background) value "white"
1861	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1862
1863	itk_component add opacity_l {
1864	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1865	} {
1866	ignore -font
1867	}
1868	itk_component add opacity {
1869	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1870	-variable [itcl::scope _settings(opacity)] \
1871	-showvalue off \
1872	-command [itcl::code $this AdjustSetting opacity]
1873	}
1874	itk_component add scale_l {
1875	label $inner.scale_l -text "Scale" -font "Arial 9"
1876	} {
1877	ignore -font
1878	}
1879	itk_component add scale {
1880	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1881	-variable [itcl::scope _settings(heightmapScale)] \
1882	-showvalue off \
1883	-command [itcl::code $this AdjustSetting heightmapScale]
1884	}
1885	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1886	itk_component add numisolines {
1887	Rappture::Spinint $inner.numisolines \
1888	-min 2 -max 50 -font "arial 9"
1889	}
1890	$itk_component(numisolines) value $_settings(numIsolines)
1891	bind $itk_component(numisolines) <<Value>> \
1892	[itcl::code $this AdjustSetting numIsolines]
1893
1894	frame $inner.separator -height 2 -relief sunken -bd 1
1895	blt::table $inner \
1896	0,0 $inner.field_l -anchor w -pady 2 \
1897	0,1 $inner.field -anchor w -pady 2 -fill x \
1898	1,0 $inner.colormap_l -anchor w -pady 2 \
1899	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1900	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
1901	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
1902	3,0 $inner.background_l -anchor w -pady 2 \
1903	3,1 $inner.background -anchor w -pady 2 -fill x \
1904	4,0 $inner.numisolines_l -anchor w -pady 2 \
1905	4,1 $inner.numisolines -anchor w -pady 2 \
1906	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
1907	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1908	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1909	8,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
1910	9,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1911	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
1912	11,0 $inner.separator -padx 2 -fill x -cspan 2 \
1913	12,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1914	13,0 $inner.opacity_l -anchor w -pady 2 \
1915	13,1 $inner.opacity -fill x -pady 2 \
1916	14,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
1917	14,1 $inner.scale -fill x -pady 2 -cspan 2 \
1918
1919	blt::table configure $inner r* c* -resize none
1920	blt::table configure $inner r15 c1 -resize expand
1921	}
1922
1923	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
1924
1925	set fg [option get $itk_component(hull) font Font]
1926	#set bfg [option get $itk_component(hull) boldFont Font]
1927
1928	set inner [$itk_component(main) insert end \
1929	-title "Axis Settings" \
1930	-icon [Rappture::icon axis1]]
1931	$inner configure -borderwidth 4
1932
1933	checkbutton $inner.visible \
1934	-text "Axes" \
1935	-variable [itcl::scope _settings(axisVisible)] \
1936	-command [itcl::code $this AdjustSetting axisVisible] \
1937	-font "Arial 9"
1938	checkbutton $inner.labels \
1939	-text "Axis Labels" \
1940	-variable [itcl::scope _settings(axisLabels)] \
1941	-command [itcl::code $this AdjustSetting axisLabels] \
1942	-font "Arial 9"
1943	label $inner.grid_l -text "Grid" -font "Arial 9"
1944	checkbutton $inner.xgrid \
1945	-text "X" \
1946	-variable [itcl::scope _settings(axisXGrid)] \
1947	-command [itcl::code $this AdjustSetting axisXGrid] \
1948	-font "Arial 9"
1949	checkbutton $inner.ygrid \
1950	-text "Y" \
1951	-variable [itcl::scope _settings(axisYGrid)] \
1952	-command [itcl::code $this AdjustSetting axisYGrid] \
1953	-font "Arial 9"
1954	checkbutton $inner.zgrid \
1955	-text "Z" \
1956	-variable [itcl::scope _settings(axisZGrid)] \
1957	-command [itcl::code $this AdjustSetting axisZGrid] \
1958	-font "Arial 9"
1959	checkbutton $inner.minorticks \
1960	-text "Minor Ticks" \
1961	-variable [itcl::scope _settings(axisMinorTicks)] \
1962	-command [itcl::code $this AdjustSetting axisMinorTicks] \
1963	-font "Arial 9"
1964
1965
1966	label $inner.mode_l -text "Mode" -font "Arial 9"
1967
1968	itk_component add axisflymode {
1969	Rappture::Combobox $inner.mode -width 10 -editable no
1970	}
1971	$inner.mode choices insert end \
1972	"static_triad" "static" \
1973	"closest_triad" "closest" \
1974	"furthest_triad" "furthest" \
1975	"outer_edges" "outer"
1976	$itk_component(axisflymode) value "static"
1977	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlymode]
1978
1979	blt::table $inner \
1980	0,0 $inner.visible -anchor w -cspan 4 \
1981	1,0 $inner.labels -anchor w -cspan 4 \
1982	2,0 $inner.minorticks -anchor w -cspan 4 \
1983	4,0 $inner.grid_l -anchor w \
1984	4,1 $inner.xgrid -anchor w \
1985	4,2 $inner.ygrid -anchor w \
1986	4,3 $inner.zgrid -anchor w \
1987	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1988	5,1 $inner.mode -fill x -cspan 3
1989
1990	blt::table configure $inner r* c* -resize none
1991	blt::table configure $inner r7 c6 -resize expand
1992	blt::table configure $inner r3 -height 0.125i
1993	}
1994
1995
1996	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
1997	set inner [$itk_component(main) insert end \
1998	-title "Camera Settings" \
1999	-icon [Rappture::icon camera]]
2000	$inner configure -borderwidth 4
2001
2002	set labels { qx qy qz qw xpan ypan zoom }
2003	set row 0
2004	foreach tag $labels {
2005	label $inner.${tag}label -text $tag -font "Arial 9"
2006	entry $inner.${tag} -font "Arial 9" -bg white \
2007	-textvariable [itcl::scope _view($tag)]
2008	bind $inner.${tag} <Return> \
2009	[itcl::code $this camera set ${tag}]
2010	bind $inner.${tag} <KP_Enter> \
2011	[itcl::code $this camera set ${tag}]
2012	blt::table $inner \
2013	$row,0 $inner.${tag}label -anchor e -pady 2 \
2014	$row,1 $inner.${tag} -anchor w -pady 2
2015	blt::table configure $inner r$row -resize none
2016	incr row
2017	}
2018	checkbutton $inner.ortho \
2019	-text "Orthographic Projection" \
2020	-variable [itcl::scope _view(ortho)] \
2021	-command [itcl::code $this camera set ortho] \
2022	-font "Arial 9"
2023	blt::table $inner \
2024	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2025	blt::table configure $inner r$row -resize none
2026	incr row
2027
2028	blt::table configure $inner c0 c1 -resize none
2029	blt::table configure $inner c2 -resize expand
2030	blt::table configure $inner r$row -resize expand
2031	}
2032
2033	#
2034	# camera --
2035	#
2036	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2037	switch -- $option {
2038	"show" {
2039	puts [array get _view]
2040	}
2041	"set" {
2042	set who [lindex $args 0]
2043	set x $_view($who)
2044	set code [catch { string is double $x } result]
2045	if { $code != 0 \|\| !$result } {
2046	return
2047	}
2048	switch -- $who {
2049	"ortho" {
2050	if {$_view(ortho)} {
2051	SendCmd "camera mode ortho"
2052	} else {
2053	SendCmd "camera mode persp"
2054	}
2055	}
2056	"xpan" - "ypan" {
2057	PanCamera
2058	}
2059	"qx" - "qy" - "qz" - "qw" {
2060	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2061	$_arcball quaternion $q
2062	EventuallyRotate $q
2063	}
2064	"zoom" {
2065	SendCmd "camera zoom $_view(zoom)"
2066	}
2067	}
2068	}
2069	}
2070	}
2071
2072	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2073	set bytes ""
2074	foreach dataobj [get] {
2075	foreach comp [$dataobj components] {
2076	set tag $dataobj-$comp
2077	#set contents [ConvertToVtkData $dataobj $comp]
2078	set contents [$dataobj vtkdata $comp]
2079	append bytes "$contents\n\n"
2080	}
2081	}
2082	return [list .vtk $bytes]
2083	}
2084
2085	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2086	if { [image width $_image(download)] > 0 &&
2087	[image height $_image(download)] > 0 } {
2088	set bytes [$_image(download) data -format "jpeg -quality 100"]
2089	set bytes [Rappture::encoding::decode -as b64 $bytes]
2090	return [list .jpg $bytes]
2091	}
2092	return ""
2093	}
2094
2095	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2096	Rappture::Balloon $popup \
2097	-title "[Rappture::filexfer::label downloadWord] as..."
2098	set inner [$popup component inner]
2099	label $inner.summary -text "" -anchor w
2100	radiobutton $inner.vtk_button -text "VTK data file" \
2101	-variable [itcl::scope _downloadPopup(format)] \
2102	-font "Arial 9 " \
2103	-value vtk
2104	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2105	radiobutton $inner.image_button -text "Image File" \
2106	-variable [itcl::scope _downloadPopup(format)] \
2107	-font "Arial 9 " \
2108	-value image
2109	Rappture::Tooltip::for $inner.image_button \
2110	"Save as digital image."
2111
2112	button $inner.ok -text "Save" \
2113	-highlightthickness 0 -pady 2 -padx 3 \
2114	-command $command \
2115	-compound left \
2116	-image [Rappture::icon download]
2117
2118	button $inner.cancel -text "Cancel" \
2119	-highlightthickness 0 -pady 2 -padx 3 \
2120	-command [list $popup deactivate] \
2121	-compound left \
2122	-image [Rappture::icon cancel]
2123
2124	blt::table $inner \
2125	0,0 $inner.summary -cspan 2 \
2126	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2127	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2128	4,1 $inner.cancel -width .9i -fill y \
2129	4,0 $inner.ok -padx 2 -width .9i -fill y
2130	blt::table configure $inner r3 -height 4
2131	blt::table configure $inner r4 -pady 4
2132	raise $inner.image_button
2133	$inner.vtk_button invoke
2134	return $inner
2135	}
2136
2137	#
2138	# SetObjectStyle --
2139	#
2140	# Set the style of the heightmap/contour object. This gets calls
2141	# for each dataset once as it is loaded. It can overridden by
2142	# the user controls.
2143	#
2144	#
2145	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2146	# Parse style string.
2147	set tag $dataobj-$comp
2148	array set style {
2149	-color BCGYR
2150	-opacity 100
2151	-levels 10
2152	}
2153	set stylelist [$dataobj style $comp]
2154	if { $stylelist != "" } {
2155	array set style $stylelist
2156	}
2157	# This is too complicated. We want to set the colormap, number of
2158	# isolines and opacity for the object. They can be the default values,
2159	# the style hints set with the dataset, or set by user controls. As
2160	# datasets get loaded, they first use the defaults that are overidden
2161	# by the style hints. If the user changes the global controls, then that
2162	# overrides everything else. I don't know what it means when global
2163	# controls are specified as style hints by each dataset. It complicates
2164	# the code to handle aberrant cases.
2165
2166	if { $_changed(opacity) } {
2167	set style(-opacity) $_settings(opacity)
2168	}
2169	if { $_changed(numIsolines) } {
2170	set style(-levels) $_settings(numIsolines)
2171	}
2172	if { $_changed(colormap) } {
2173	set style(-color) $_settings(colormap)
2174	}
2175	if { $_currentColormap == "" } {
2176	$itk_component(colormap) value $style(-color)
2177	}
2178	set _currentOpacity $style(-opacity)
2179	if { $_currentNumIsolines != $style(-levels) } {
2180	set _currentNumIsolines $style(-levels)
2181	DrawLegend
2182	}
2183	SendCmd "dataset outline $_settings(outline) $tag"
2184	SendCmd "dataset color [Color2RGB $itk_option(-plotforeground)] $tag"
2185	set scale [GetHeightmapScale]
2186	SendCmd "heightmap add numcontours $_currentNumIsolines $scale $tag"
2187	set _comp2scale($tag) $_settings(heightmapScale)
2188	SendCmd "heightmap edges $_settings(edges) $tag"
2189	SendCmd "heightmap wireframe $_settings(wireframe) $tag"
2190	SetCurrentColormap $style(-color)
2191	set color [$itk_component(isolinecolor) value]
2192	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2193	SendCmd "heightmap lighting $_settings(isHeightmap) $tag"
2194	}
2195
2196	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2197	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2198	return 0
2199	}
2200	return 1
2201	}
2202
2203	# ----------------------------------------------------------------------
2204	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2205	#
2206	# Invoked automatically whenever the "legend" command comes in from
2207	# the rendering server. Indicates that binary image data with the
2208	# specified <size> will follow.
2209	# ----------------------------------------------------------------------
2210	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2211	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2212	if { [isconnected] } {
2213	set bytes [ReceiveBytes $size]
2214	if { ![info exists _image(legend)] } {
2215	set _image(legend) [image create photo]
2216	}
2217	$_image(legend) configure -data $bytes
2218	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2219	if { [catch {DrawLegend} errs] != 0 } {
2220	global errorInfo
2221	puts stderr "errs=$errs errorInfo=$errorInfo"
2222	}
2223	}
2224	}
2225
2226	#
2227	# DrawLegend --
2228	#
2229	# Draws the legend in the own canvas on the right side of the plot area.
2230	#
2231	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2232	set fname $_curFldName
2233	set c $itk_component(view)
2234	set w [winfo width $c]
2235	set h [winfo height $c]
2236	set font "Arial 8"
2237	set lineht [font metrics $font -linespace]
2238
2239	if { [string match "component*" $fname] } {
2240	set title ""
2241	} else {
2242	if { [info exists _fields($fname)] } {
2243	foreach { title units } $_fields($fname) break
2244	if { $units != "" } {
2245	set title [format "%s (%s)" $title $units]
2246	}
2247	} else {
2248	set title $fname
2249	}
2250	}
2251	set x [expr $w - 2]
2252	if { !$_settings(legendVisible) } {
2253	$c delete legend
2254	return
2255	}
2256	if { [$c find withtag "legend"] == "" } {
2257	set y 2
2258	# If there's a legend title, create a text item for the title.
2259	$c create text $x $y \
2260	-anchor ne \
2261	-fill $itk_option(-plotforeground) -tags "title legend" \
2262	-font $font
2263	incr y $lineht
2264	$c create text $x $y \
2265	-anchor ne \
2266	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2267	-font $font
2268	incr y $lineht
2269	$c create image $x $y \
2270	-anchor ne \
2271	-image $_image(legend) -tags "colormap legend"
2272	$c create rectangle $x $y 1 1 \
2273	-fill "" -outline "" -tags "sensor legend"
2274	$c create text $x [expr {$h-2}] \
2275	-anchor se \
2276	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2277	-font $font
2278	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2279	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2280	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2281	}
2282	$c delete isoline
2283	set x2 $x
2284	set iw [image width $_image(legend)]
2285	set ih [image height $_image(legend)]
2286	set x1 [expr $x2 - ($iw*12)/10]
2287	set color [$itk_component(isolinecolor) value]
2288
2289	# Draw the isolines on the legend.
2290	if { $color != "none" && [info exists _limits($_curFldName)] &&
2291	$_settings(isolinesVisible) && $_currentNumIsolines > 0 } {
2292	set pixels [blt::vector create \#auto]
2293	set values [blt::vector create \#auto]
2294	set range [image height $_image(legend)]
2295	# Order of pixels is max to min (max is at top of legend).
2296	$pixels seq $ih 0 $_currentNumIsolines
2297
2298	set offset [expr 2 + $lineht]
2299	# If there's a legend title, increase the offset by the line height.
2300	if { $title != "" } {
2301	incr offset $lineht
2302	}
2303	$pixels expr {round($pixels + $offset)}
2304	# Order of values is min to max.
2305	foreach { vmin vmax } $_limits($_curFldName) break
2306	$values seq $vmin $vmax $_currentNumIsolines
2307	set tags "isoline legend"
2308	array unset _isolines
2309	foreach pos [$pixels range 0 end] value [$values range end 0] {
2310	set y1 [expr int($pos)]
2311	for { set off 0 } { $off < 3 } { incr off } {
2312	set _isolines([expr $y1 + $off]) $value
2313	set _isolines([expr $y1 - $off]) $value
2314	}
2315	set id [$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags]
2316	}
2317	blt::vector destroy $pixels $values
2318	}
2319
2320	$c bind title <ButtonPress> [itcl::code $this Combo post]
2321	$c bind title <Enter> [itcl::code $this Combo activate]
2322	$c bind title <Leave> [itcl::code $this Combo deactivate]
2323	# Reset the item coordinates according the current size of the plot.
2324	if { [info exists _limits($_curFldName)] } {
2325	foreach { vmin vmax } $_limits($_curFldName) break
2326	$c itemconfigure vmin -text [format %g $vmin]
2327	$c itemconfigure vmax -text [format %g $vmax]
2328	}
2329	set y 2
2330	# If there's a legend title, move the title to the correct position
2331	if { $title != "" } {
2332	$c itemconfigure title -text $title
2333	$c coords title $x $y
2334	incr y $lineht
2335	}
2336	$c coords vmax $x $y
2337	incr y $lineht
2338	$c coords colormap $x $y
2339	set ix [image width $_image(legend)]
2340	set ih [image height $_image(legend)]
2341	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2342	$c raise sensor
2343	$c coords vmin $x [expr {$h - 2}]
2344	}
2345
2346	#
2347	# EnterLegend --
2348	#
2349	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2350	SetLegendTip $x $y
2351	}
2352
2353	#
2354	# MotionLegend --
2355	#
2356	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2357	Rappture::Tooltip::tooltip cancel
2358	set c $itk_component(view)
2359	set cw [winfo width $c]
2360	set ch [winfo height $c]
2361	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2362	SetLegendTip $x $y
2363	}
2364	}
2365
2366	#
2367	# LeaveLegend --
2368	#
2369	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2370	Rappture::Tooltip::tooltip cancel
2371	.rappturetooltip configure -icon ""
2372	}
2373
2374	#
2375	# SetLegendTip --
2376	#
2377	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2378	set fname $_curFldName
2379	set c $itk_component(view)
2380	set w [winfo width $c]
2381	set h [winfo height $c]
2382	set font "Arial 8"
2383	set lineht [font metrics $font -linespace]
2384
2385	set ih [image height $_image(legend)]
2386	# Subtract off the offset of the color ramp from the top of the canvas
2387	set iy [expr $y - ($lineht + 2)]
2388
2389	if { [string match "component*" $fname] } {
2390	set title ""
2391	} else {
2392	if { [info exists _fields($fname)] } {
2393	foreach { title units } $_fields($fname) break
2394	if { $units != "" } {
2395	set title [format "%s (%s)" $title $units]
2396	}
2397	} else {
2398	set title $fname
2399	}
2400	}
2401	# If there's a legend title, increase the offset by the line height.
2402	if { $title != "" } {
2403	incr iy -$lineht
2404	}
2405
2406	# Make a swatch of the selected color
2407	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2408	return
2409	}
2410
2411	if { ![info exists _image(swatch)] } {
2412	set _image(swatch) [image create photo -width 24 -height 24]
2413	}
2414	set color [eval format "\#%02x%02x%02x" $pixel]
2415	$_image(swatch) put black -to 0 0 23 23
2416	$_image(swatch) put $color -to 1 1 22 22
2417
2418	# Compute the value of the point
2419	if { [info exists _limits($fname)] } {
2420	foreach { vmin vmax } $_limits($fname) break
2421	set t [expr 1.0 - (double($iy) / double($ih-1))]
2422	set value [expr $t * ($vmax - $vmin) + $vmin]
2423	} else {
2424	set value 0.0
2425	}
2426	set tipx [expr $x + 15]
2427	set tipy [expr $y - 5]
2428	.rappturetooltip configure -icon $_image(swatch)
2429	if { [info exists _isolines($y)] } {
2430	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2431	} else {
2432	Rappture::Tooltip::text $c [format "$title %g" $value]
2433	}
2434	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2435	}
2436
2437	# ----------------------------------------------------------------------
2438	# USAGE: _dropdown post
2439	# USAGE: _dropdown unpost
2440	# USAGE: _dropdown select
2441	#
2442	# Used internally to handle the dropdown list for this combobox. The
2443	# post/unpost options are invoked when the list is posted or unposted
2444	# to manage the relief of the controlling button. The select option
2445	# is invoked whenever there is a selection from the list, to assign
2446	# the value back to the gauge.
2447	# ----------------------------------------------------------------------
2448	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2449	set c $itk_component(view)
2450	switch -- $option {
2451	post {
2452	foreach { x1 y1 x2 y2 } [$c bbox title] break
2453	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2454	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2455	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2456	tk_popup $itk_component(fieldmenu) $x $y
2457	}
2458	activate {
2459	$c itemconfigure title -fill red
2460	}
2461	deactivate {
2462	$c itemconfigure title -fill $itk_option(-plotforeground)
2463	}
2464	invoke {
2465	$itk_component(field) value $_curFldLabel
2466	AdjustSetting field
2467	}
2468	default {
2469	error "bad option \"$option\": should be post, unpost, select"
2470	}
2471	}
2472	}
2473
2474	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2475	if { $_settings(isHeightmap) } {
2476	set val $_settings(heightmapScale)
2477	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2478	return $sval
2479	}
2480	set sval 0
2481	}
2482
2483
2484
2485

Note: See TracBrowser for help on using the repository browser.

Download in other formats: