Context Navigation

source: branches/1.3/gui/scripts/vtkvolumeviewer.tcl @ 5177

Last change on this file since 5177 was 5177, checked in by ldelgass, 9 years ago
merging some fixes from the trunk
File size: 76.9 KB

Line
1	# -- mode: tcl; indent-tabs-mode: nil --
2
3	# ----------------------------------------------------------------------
4	# COMPONENT: VtkVolumeViewer - Vtk volume viewer
5	#
6	# It connects to the Vtk server running on a rendering farm,
7	# transmits data, and displays the results.
8	# ======================================================================
9	# AUTHOR: Michael McLennan, Purdue University
10	# Copyright (c) 2004-2012 HUBzero Foundation, LLC
11	#
12	# See the file "license.terms" for information on usage and
13	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
14	# ======================================================================
15	package require Itk
16	package require BLT
17	#package require Img
18
19	option add *VtkVolumeViewer.width 4i widgetDefault
20	option add VtkVolumeViewercursor crosshair widgetDefault
21	option add *VtkVolumeViewer.height 4i widgetDefault
22	option add *VtkVolumeViewer.foreground black widgetDefault
23	option add *VtkVolumeViewer.controlBackground gray widgetDefault
24	option add *VtkVolumeViewer.controlDarkBackground #999999 widgetDefault
25	option add *VtkVolumeViewer.plotBackground black widgetDefault
26	option add *VtkVolumeViewer.plotForeground white widgetDefault
27	option add *VtkVolumeViewer.font \
28	--helvetica-medium-r-normal--12-* widgetDefault
29
30	# must use this name -- plugs into Rappture::resources::load
31	proc VtkVolumeViewer_init_resources {} {
32	Rappture::resources::register \
33	vtkvis_server Rappture::VtkVolumeViewer::SetServerList
34	}
35
36	itcl::class Rappture::VtkVolumeViewer {
37	inherit Rappture::VisViewer
38
39	itk_option define -plotforeground plotForeground Foreground ""
40	itk_option define -plotbackground plotBackground Background ""
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 parameters {title args} {
61	# do nothing
62	}
63	public method scale {args}
64
65	protected method Connect {}
66	protected method CurrentDatasets {args}
67	protected method Disconnect {}
68	protected method DoResize {}
69	protected method DoReseed {}
70	protected method DoRotate {}
71	protected method AdjustSetting {what {value ""}}
72	protected method InitSettings { args }
73	protected method Pan {option x y}
74	protected method Pick {x y}
75	protected method Rebuild {}
76	protected method ReceiveDataset { args }
77	protected method ReceiveImage { args }
78	protected method ReceiveLegend { colormap title vmin vmax size }
79	protected method Rotate {option x y}
80	protected method Zoom {option}
81
82	# The following methods are only used by this class.
83	private method BuildAxisTab {}
84	private method BuildCameraTab {}
85	private method BuildColormap { name colors }
86	private method BuildCutplaneTab {}
87	private method BuildDownloadPopup { widget command }
88	private method BuildVolumeTab {}
89	private method DrawLegend {}
90	private method Combo { option }
91	private method EnterLegend { x y }
92	private method EventuallyResize { w h }
93	private method EventuallyReseed { numPoints }
94	private method EventuallyRotate { q }
95	private method EventuallySetCutplane { axis args }
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 SetColormap { dataobj comp }
104	private method ChangeColormap { dataobj comp color }
105	private method SetLegendTip { x y }
106	private method SetObjectStyle { dataobj comp }
107	private method Slice {option args}
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 _datasets ; # contains all the dataobj-component
114	; # datasets in the server
115	private variable _colormaps ; # contains all the colormaps
116	; # in the server.
117	private variable _dataset2style ;# maps dataobj-component to transfunc
118
119	private variable _click ; # info used for rotate operations
120	private variable _limits ; # autoscale min/max for all axes
121	private variable _view ; # view params for 3D view
122	private variable _settings
123	private variable _style; # Array of current component styles.
124	private variable _initialStyle; # Array of initial component styles.
125	private variable _reset 1; # indicates if camera needs to be reset
126	# to starting position.
127
128	private variable _first "" ; # This is the topmost dataset.
129	private variable _start 0
130	private variable _title ""
131	private variable _seeds
132
133	common _downloadPopup; # download options from popup
134	private common _hardcopy
135	private variable _width 0
136	private variable _height 0
137	private variable _resizePending 0
138	private variable _reseedPending 0
139	private variable _rotatePending 0
140	private variable _cutplanePending 0
141	private variable _legendPending 0
142	private variable _fields
143	private variable _curFldName ""
144	private variable _curFldLabel ""
145	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
146	}
147
148	itk::usual VtkVolumeViewer {
149	keep -background -foreground -cursor -font
150	keep -plotbackground -plotforeground
151	}
152
153	# ----------------------------------------------------------------------
154	# CONSTRUCTOR
155	# ----------------------------------------------------------------------
156	itcl::body Rappture::VtkVolumeViewer::constructor {hostlist args} {
157	package require vtk
158	set _serverType "vtkvis"
159
160	# Rebuild event
161	$_dispatcher register !rebuild
162	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
163
164	# Resize event
165	$_dispatcher register !resize
166	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
167
168	# Reseed event
169	$_dispatcher register !reseed
170	$_dispatcher dispatch $this !reseed "[itcl::code $this DoReseed]; list"
171
172	# Rotate event
173	$_dispatcher register !rotate
174	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
175
176	# Legend event
177	$_dispatcher register !legend
178	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
179
180	# X-Cutplane event
181	$_dispatcher register !xcutplane
182	$_dispatcher dispatch $this !xcutplane \
183	"[itcl::code $this AdjustSetting cutplane-xposition]; list"
184
185	# Y-Cutplane event
186	$_dispatcher register !ycutplane
187	$_dispatcher dispatch $this !ycutplane \
188	"[itcl::code $this AdjustSetting cutplane-yposition]; list"
189
190	# Z-Cutplane event
191	$_dispatcher register !zcutplane
192	$_dispatcher dispatch $this !zcutplane \
193	"[itcl::code $this AdjustSetting cutplane-zposition]; list"
194
195	#
196	# Populate parser with commands handle incoming requests
197	#
198	$_parser alias image [itcl::code $this ReceiveImage]
199	$_parser alias dataset [itcl::code $this ReceiveDataset]
200	$_parser alias legend [itcl::code $this ReceiveLegend]
201
202	# Initialize the view to some default parameters.
203	array set _view {
204	qw 0.853553
205	qx -0.353553
206	qy 0.353553
207	qz 0.146447
208	zoom 1.0
209	xpan 0
210	ypan 0
211	ortho 0
212	}
213	set _arcball [blt::arcball create 100 100]
214	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
215	$_arcball quaternion $q
216
217	array set _settings {
218	axis-xgrid 0
219	axis-ygrid 0
220	axis-zgrid 0
221	axesVisible 1
222	axisLabels 1
223	cutplaneEdges 0
224	cutplane-xvisible 1
225	cutplane-yvisible 1
226	cutplane-zvisible 1
227	cutplane-xposition 50
228	cutplane-yposition 50
229	cutplane-zposition 50
230	cutplaneVisible 0
231	cutplaneLighting 1
232	cutplaneWireframe 0
233	cutplane-opacity 100
234	volumeLighting 1
235	volume-material 80
236	volume-opacity 40
237	volume-quality 50
238	volumeVisible 1
239	legendVisible 1
240	}
241
242	itk_component add view {
243	canvas $itk_component(plotarea).view \
244	-highlightthickness 0 -borderwidth 0
245	} {
246	usual
247	ignore -highlightthickness -borderwidth -background
248	}
249
250	itk_component add fieldmenu {
251	menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
252	-tearoff no
253	} {
254	usual
255	ignore -background -foreground -relief -tearoff
256	}
257	set c $itk_component(view)
258	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
259	bind $c <4> [itcl::code $this Zoom in 0.25]
260	bind $c <5> [itcl::code $this Zoom out 0.25]
261	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
262	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
263	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
264	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
265	bind $c <Enter> "focus %W"
266	bind $c <Control-F1> [itcl::code $this ToggleConsole]
267
268	# Fixes the scrollregion in case we go off screen
269	$c configure -scrollregion [$c bbox all]
270
271	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
272	set _map(cwidth) -1
273	set _map(cheight) -1
274	set _map(zoom) 1.0
275	set _map(original) ""
276
277	set f [$itk_component(main) component controls]
278	itk_component add reset {
279	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
280	-highlightthickness 0 \
281	-image [Rappture::icon reset-view] \
282	-command [itcl::code $this Zoom reset]
283	} {
284	usual
285	ignore -highlightthickness
286	}
287	pack $itk_component(reset) -side top -padx 2 -pady 2
288	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
289
290	itk_component add zoomin {
291	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
292	-highlightthickness 0 \
293	-image [Rappture::icon zoom-in] \
294	-command [itcl::code $this Zoom in]
295	} {
296	usual
297	ignore -highlightthickness
298	}
299	pack $itk_component(zoomin) -side top -padx 2 -pady 2
300	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
301
302	itk_component add zoomout {
303	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
304	-highlightthickness 0 \
305	-image [Rappture::icon zoom-out] \
306	-command [itcl::code $this Zoom out]
307	} {
308	usual
309	ignore -highlightthickness
310	}
311	pack $itk_component(zoomout) -side top -padx 2 -pady 2
312	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
313
314	itk_component add volume {
315	Rappture::PushButton $f.volume \
316	-onimage [Rappture::icon volume-on] \
317	-offimage [Rappture::icon volume-off] \
318	-variable [itcl::scope _settings(volumeVisible)] \
319	-command [itcl::code $this AdjustSetting volumeVisible]
320	}
321	$itk_component(volume) select
322	Rappture::Tooltip::for $itk_component(volume) \
323	"Don't display the volume"
324	pack $itk_component(volume) -padx 2 -pady 2
325
326	itk_component add cutplane {
327	Rappture::PushButton $f.cutplane \
328	-onimage [Rappture::icon cutbutton] \
329	-offimage [Rappture::icon cutbutton] \
330	-variable [itcl::scope _settings(cutplaneVisible)] \
331	-command [itcl::code $this AdjustSetting cutplaneVisible]
332	}
333	Rappture::Tooltip::for $itk_component(cutplane) \
334	"Show/Hide cutplanes"
335	pack $itk_component(cutplane) -padx 2 -pady 2
336
337
338	if { [catch {
339	BuildVolumeTab
340	BuildCutplaneTab
341	BuildAxisTab
342	BuildCameraTab
343	} errs] != 0 } {
344	puts stderr errs=$errs
345	}
346	# Legend
347
348	set _image(legend) [image create photo]
349	itk_component add legend {
350	canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
351	} {
352	usual
353	ignore -highlightthickness
354	rename -background -plotbackground plotBackground Background
355	}
356
357	# Hack around the Tk panewindow. The problem is that the requested
358	# size of the 3d view isn't set until an image is retrieved from
359	# the server. So the panewindow uses the tiny size.
360	set w 10000
361	pack forget $itk_component(view)
362	blt::table $itk_component(plotarea) \
363	0,0 $itk_component(view) -fill both -reqwidth $w
364	blt::table configure $itk_component(plotarea) c1 -resize none
365
366	# Bindings for rotation via mouse
367	bind $itk_component(view) <ButtonPress-1> \
368	[itcl::code $this Rotate click %x %y]
369	bind $itk_component(view) <B1-Motion> \
370	[itcl::code $this Rotate drag %x %y]
371	bind $itk_component(view) <ButtonRelease-1> \
372	[itcl::code $this Rotate release %x %y]
373	bind $itk_component(view) <Configure> \
374	[itcl::code $this EventuallyResize %w %h]
375
376	if 0 {
377	bind $itk_component(view) <Configure> \
378	[itcl::code $this EventuallyResize %w %h]
379	}
380	# Bindings for panning via mouse
381	bind $itk_component(view) <ButtonPress-2> \
382	[itcl::code $this Pan click %x %y]
383	bind $itk_component(view) <B2-Motion> \
384	[itcl::code $this Pan drag %x %y]
385	bind $itk_component(view) <ButtonRelease-2> \
386	[itcl::code $this Pan release %x %y]
387
388	#bind $itk_component(view) <ButtonRelease-3> \
389	# [itcl::code $this Pick %x %y]
390
391	# Bindings for panning via keyboard
392	bind $itk_component(view) <KeyPress-Left> \
393	[itcl::code $this Pan set -10 0]
394	bind $itk_component(view) <KeyPress-Right> \
395	[itcl::code $this Pan set 10 0]
396	bind $itk_component(view) <KeyPress-Up> \
397	[itcl::code $this Pan set 0 -10]
398	bind $itk_component(view) <KeyPress-Down> \
399	[itcl::code $this Pan set 0 10]
400	bind $itk_component(view) <Shift-KeyPress-Left> \
401	[itcl::code $this Pan set -2 0]
402	bind $itk_component(view) <Shift-KeyPress-Right> \
403	[itcl::code $this Pan set 2 0]
404	bind $itk_component(view) <Shift-KeyPress-Up> \
405	[itcl::code $this Pan set 0 -2]
406	bind $itk_component(view) <Shift-KeyPress-Down> \
407	[itcl::code $this Pan set 0 2]
408
409	# Bindings for zoom via keyboard
410	bind $itk_component(view) <KeyPress-Prior> \
411	[itcl::code $this Zoom out]
412	bind $itk_component(view) <KeyPress-Next> \
413	[itcl::code $this Zoom in]
414
415	bind $itk_component(view) <Enter> "focus $itk_component(view)"
416
417	if {[string equal "x11" [tk windowingsystem]]} {
418	# Bindings for zoom via mouse
419	bind $itk_component(view) <4> [itcl::code $this Zoom out]
420	bind $itk_component(view) <5> [itcl::code $this Zoom in]
421	}
422
423	set _image(download) [image create photo]
424
425	eval itk_initialize $args
426	Connect
427	}
428
429	# ----------------------------------------------------------------------
430	# DESTRUCTOR
431	# ----------------------------------------------------------------------
432	itcl::body Rappture::VtkVolumeViewer::destructor {} {
433	Disconnect
434	image delete $_image(plot)
435	image delete $_image(download)
436	catch { blt::arcball destroy $_arcball }
437	}
438
439	itcl::body Rappture::VtkVolumeViewer::DoResize {} {
440	if { $_width < 2 } {
441	set _width 500
442	}
443	if { $_height < 2 } {
444	set _height 500
445	}
446	set _start [clock clicks -milliseconds]
447	SendCmd "screen size $_width $_height"
448
449	set _legendPending 1
450	set _resizePending 0
451	}
452
453	itcl::body Rappture::VtkVolumeViewer::DoRotate {} {
454	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
455	SendCmd "camera orient $q"
456	set _rotatePending 0
457	}
458
459	itcl::body Rappture::VtkVolumeViewer::EventuallyResize { w h } {
460	set _width $w
461	set _height $h
462	$_arcball resize $w $h
463	if { !$_resizePending } {
464	set _resizePending 1
465	$_dispatcher event -after 400 !resize
466	}
467	}
468
469	itcl::body Rappture::VtkVolumeViewer::EventuallyReseed { numPoints } {
470	set _numSeeds $numPoints
471	if { !$_reseedPending } {
472	set _reseedPending 1
473	$_dispatcher event -after 600 !reseed
474	}
475	}
476
477	set rotate_delay 100
478
479	itcl::body Rappture::VtkVolumeViewer::EventuallyRotate { q } {
480	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
481	if { !$_rotatePending } {
482	set _rotatePending 1
483	global rotate_delay
484	$_dispatcher event -after $rotate_delay !rotate
485	}
486	}
487
488	itcl::body Rappture::VtkVolumeViewer::EventuallySetCutplane { axis args } {
489	if { !$_cutplanePending } {
490	set _cutplanePending 1
491	$_dispatcher event -after 100 !${axis}cutplane
492	}
493	}
494
495	# ----------------------------------------------------------------------
496	# USAGE: add <dataobj> ?<settings>?
497	#
498	# Clients use this to add a data object to the plot. The optional
499	# <settings> are used to configure the plot. Allowed settings are
500	# -color, -brightness, -width, -linestyle, and -raise.
501	# ----------------------------------------------------------------------
502	itcl::body Rappture::VtkVolumeViewer::add {dataobj {settings ""}} {
503	array set params {
504	-color auto
505	-width 1
506	-linestyle solid
507	-brightness 0
508	-raise 0
509	-description ""
510	-param ""
511	-type ""
512	}
513	array set params $settings
514	set params(-description) ""
515	set params(-param) ""
516	array set params $settings
517
518	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
519	# can't handle -autocolors yet
520	set params(-color) black
521	}
522	set pos [lsearch -exact $_dlist $dataobj]
523	if {$pos < 0} {
524	lappend _dlist $dataobj
525	}
526	set _obj2ovride($dataobj-color) $params(-color)
527	set _obj2ovride($dataobj-width) $params(-width)
528	set _obj2ovride($dataobj-raise) $params(-raise)
529	$_dispatcher event -idle !rebuild
530	}
531
532
533	# ----------------------------------------------------------------------
534	# USAGE: delete ?<dataobj1> <dataobj2> ...?
535	#
536	# Clients use this to delete a dataobj from the plot. If no dataobjs
537	# are specified, then all dataobjs are deleted. No data objects are
538	# deleted. They are only removed from the display list.
539	#
540	# ----------------------------------------------------------------------
541	itcl::body Rappture::VtkVolumeViewer::delete {args} {
542	if { [llength $args] == 0} {
543	set args $_dlist
544	}
545	# Delete all specified dataobjs
546	set changed 0
547	foreach dataobj $args {
548	set pos [lsearch -exact $_dlist $dataobj]
549	if { $pos < 0 } {
550	continue; # Don't know anything about it.
551	}
552	# Remove it from the dataobj list.
553	set _dlist [lreplace $_dlist $pos $pos]
554	array unset _obj2ovride $dataobj-*
555	array unset _settings $dataobj-*
556	set changed 1
557	}
558	# If anything changed, then rebuild the plot
559	if { $changed } {
560	$_dispatcher event -idle !rebuild
561	}
562	}
563
564	# ----------------------------------------------------------------------
565	# USAGE: get ?-objects?
566	# USAGE: get ?-visible?
567	# USAGE: get ?-image view?
568	#
569	# Clients use this to query the list of objects being plotted, in
570	# order from bottom to top of this result. The optional "-image"
571	# flag can also request the internal images being shown.
572	# ----------------------------------------------------------------------
573	itcl::body Rappture::VtkVolumeViewer::get {args} {
574	if {[llength $args] == 0} {
575	set args "-objects"
576	}
577
578	set op [lindex $args 0]
579	switch -- $op {
580	"-objects" {
581	# put the dataobj list in order according to -raise options
582	set dlist {}
583	foreach dataobj $_dlist {
584	if { ![IsValidObject $dataobj] } {
585	continue
586	}
587	if {[info exists _obj2ovride($dataobj-raise)] &&
588	$_obj2ovride($dataobj-raise)} {
589	set dlist [linsert $dlist 0 $dataobj]
590	} else {
591	lappend dlist $dataobj
592	}
593	}
594	return $dlist
595	}
596	"-visible" {
597	set dlist {}
598	foreach dataobj $_dlist {
599	if { ![IsValidObject $dataobj] } {
600	continue
601	}
602	if { ![info exists _obj2ovride($dataobj-raise)] } {
603	# No setting indicates that the object isn't visible.
604	continue
605	}
606	# Otherwise use the -raise parameter to put the object to
607	# the front of the list.
608	if { $_obj2ovride($dataobj-raise) } {
609	set dlist [linsert $dlist 0 $dataobj]
610	} else {
611	lappend dlist $dataobj
612	}
613	}
614	return $dlist
615	}
616	-image {
617	if {[llength $args] != 2} {
618	error "wrong # args: should be \"get -image view\""
619	}
620	switch -- [lindex $args end] {
621	view {
622	return $_image(plot)
623	}
624	default {
625	error "bad image name \"[lindex $args end]\": should be view"
626	}
627	}
628	}
629	default {
630	error "bad option \"$op\": should be -objects or -image"
631	}
632	}
633	}
634
635	# ----------------------------------------------------------------------
636	# USAGE: scale ?<data1> <data2> ...?
637	#
638	# Sets the default limits for the overall plot according to the
639	# limits of the data for all of the given <data> objects. This
640	# accounts for all objects--even those not showing on the screen.
641	# Because of this, the limits are appropriate for all objects as
642	# the user scans through data in the ResultSet viewer.
643	# ----------------------------------------------------------------------
644	itcl::body Rappture::VtkVolumeViewer::scale {args} {
645	foreach dataobj $args {
646	foreach axis { x y z } {
647	set lim [$dataobj limits $axis]
648	if { ![info exists _limits($axis)] } {
649	set _limits($axis) $lim
650	continue
651	}
652	foreach {min max} $lim break
653	foreach {amin amax} $_limits($axis) break
654	if { $amin > $min } {
655	set amin $min
656	}
657	if { $amax < $max } {
658	set amax $max
659	}
660	set _limits($axis) [list $amin $amax]
661	}
662	foreach { fname lim } [$dataobj fieldlimits] {
663	if { ![info exists _limits($fname)] } {
664	set _limits($fname) $lim
665	continue
666	}
667	foreach {min max} $lim break
668	foreach {fmin fmax} $_limits($fname) break
669	if { $fmin > $min } {
670	set fmin $min
671	}
672	if { $fmax < $max } {
673	set fmax $max
674	}
675	set _limits($fname) [list $fmin $fmax]
676	}
677	}
678	}
679
680	# ----------------------------------------------------------------------
681	# USAGE: download coming
682	# USAGE: download controls <downloadCommand>
683	# USAGE: download now
684	#
685	# Clients use this method to create a downloadable representation
686	# of the plot. Returns a list of the form {ext string}, where
687	# "ext" is the file extension (indicating the type of data) and
688	# "string" is the data itself.
689	# ----------------------------------------------------------------------
690	itcl::body Rappture::VtkVolumeViewer::download {option args} {
691	switch $option {
692	coming {
693	if {[catch {
694	blt::winop snap $itk_component(plotarea) $_image(download)
695	}]} {
696	$_image(download) configure -width 1 -height 1
697	$_image(download) put #000000
698	}
699	}
700	controls {
701	set popup .vtkviewerdownload
702	if { ![winfo exists .vtkviewerdownload] } {
703	set inner [BuildDownloadPopup $popup [lindex $args 0]]
704	} else {
705	set inner [$popup component inner]
706	}
707	set _downloadPopup(image_controls) $inner.image_frame
708	set num [llength [get]]
709	set num [expr {($num == 1) ? "1 result" : "$num results"}]
710	set word [Rappture::filexfer::label downloadWord]
711	$inner.summary configure -text "$word $num in the following format:"
712	update idletasks ;# Fix initial sizes
713	return $popup
714	}
715	now {
716	set popup .vtkviewerdownload
717	if {[winfo exists .vtkviewerdownload]} {
718	$popup deactivate
719	}
720	switch -- $_downloadPopup(format) {
721	"image" {
722	return [$this GetImage [lindex $args 0]]
723	}
724	"vtk" {
725	return [$this GetVtkData [lindex $args 0]]
726	}
727	}
728	return ""
729	}
730	default {
731	error "bad option \"$option\": should be coming, controls, now"
732	}
733	}
734	}
735
736	# ----------------------------------------------------------------------
737	# USAGE: Connect ?<host:port>,<host:port>...?
738	#
739	# Clients use this method to establish a connection to a new
740	# server, or to reestablish a connection to the previous server.
741	# Any existing connection is automatically closed.
742	# ----------------------------------------------------------------------
743	itcl::body Rappture::VtkVolumeViewer::Connect {} {
744	set _hosts [GetServerList "vtkvis"]
745	if { "" == $_hosts } {
746	return 0
747	}
748	set result [VisViewer::Connect $_hosts]
749	if { $result } {
750	if { $_reportClientInfo } {
751	# Tell the server the viewer, hub, user and session.
752	# Do this immediately on connect before buffing any commands
753	global env
754
755	set info {}
756	set user "???"
757	if { [info exists env(USER)] } {
758	set user $env(USER)
759	}
760	set session "???"
761	if { [info exists env(SESSION)] } {
762	set session $env(SESSION)
763	}
764	lappend info "version" "$Rappture::version"
765	lappend info "build" "$Rappture::build"
766	lappend info "svnurl" "$Rappture::svnurl"
767	lappend info "installdir" "$Rappture::installdir"
768	lappend info "hub" [exec hostname]
769	lappend info "client" "vtkvolumeviewer"
770	lappend info "user" $user
771	lappend info "session" $session
772	SendCmd "clientinfo [list $info]"
773	}
774
775	set w [winfo width $itk_component(view)]
776	set h [winfo height $itk_component(view)]
777	EventuallyResize $w $h
778	}
779	return $result
780	}
781
782	#
783	# isconnected --
784	#
785	# Indicates if we are currently connected to the visualization server.
786	#
787	itcl::body Rappture::VtkVolumeViewer::isconnected {} {
788	return [VisViewer::IsConnected]
789	}
790
791	#
792	# disconnect --
793	#
794	itcl::body Rappture::VtkVolumeViewer::disconnect {} {
795	Disconnect
796	set _reset 1
797	}
798
799	#
800	# Disconnect --
801	#
802	# Clients use this method to disconnect from the current rendering
803	# server.
804	#
805	itcl::body Rappture::VtkVolumeViewer::Disconnect {} {
806	VisViewer::Disconnect
807
808	$_dispatcher cancel !rebuild
809	$_dispatcher cancel !resize
810	$_dispatcher cancel !reseed
811	$_dispatcher cancel !rotate
812	$_dispatcher cancel !xcutplane
813	$_dispatcher cancel !ycutplane
814	$_dispatcher cancel !zcutplane
815	$_dispatcher cancel !legend
816	# disconnected -- no more data sitting on server
817	set _outbuf ""
818	array unset _datasets
819	array unset _data
820	array unset _colormaps
821	array unset _seeds
822	array unset _dataset2style
823	array unset _obj2datasets
824	}
825
826	# ----------------------------------------------------------------------
827	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
828	#
829	# Invoked automatically whenever the "image" command comes in from
830	# the rendering server. Indicates that binary image data with the
831	# specified <size> will follow.
832	# ----------------------------------------------------------------------
833	itcl::body Rappture::VtkVolumeViewer::ReceiveImage { args } {
834	array set info {
835	-token "???"
836	-bytes 0
837	-type image
838	}
839	array set info $args
840	set bytes [ReceiveBytes $info(-bytes)]
841	StopWaiting
842	if { $info(-type) == "image" } {
843	if 0 {
844	set f [open "last.ppm" "w"]
845	puts $f $bytes
846	close $f
847	}
848	$_image(plot) configure -data $bytes
849	set time [clock seconds]
850	set date [clock format $time]
851	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
852	if { $_start > 0 } {
853	set finish [clock clicks -milliseconds]
854	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
855	set _start 0
856	}
857	} elseif { $info(type) == "print" } {
858	set tag $this-print-$info(-token)
859	set _hardcopy($tag) $bytes
860	}
861	if { $_legendPending } {
862	RequestLegend
863	}
864	}
865
866	#
867	# ReceiveDataset --
868	#
869	itcl::body Rappture::VtkVolumeViewer::ReceiveDataset { args } {
870	if { ![isconnected] } {
871	return
872	}
873	set option [lindex $args 0]
874	switch -- $option {
875	"scalar" {
876	set option [lindex $args 1]
877	switch -- $option {
878	"world" {
879	foreach { x y z value tag } [lrange $args 2 end] break
880	}
881	"pixel" {
882	foreach { x y value tag } [lrange $args 2 end] break
883	}
884	}
885	}
886	"vector" {
887	set option [lindex $args 1]
888	switch -- $option {
889	"world" {
890	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
891	}
892	"pixel" {
893	foreach { x y vx vy vz tag } [lrange $args 2 end] break
894	}
895	}
896	}
897	"names" {
898	foreach { name } [lindex $args 1] {
899	#puts stderr "Dataset: $name"
900	}
901	}
902	default {
903	error "unknown dataset option \"$option\" from server"
904	}
905	}
906	}
907
908	# ----------------------------------------------------------------------
909	# USAGE: Rebuild
910	#
911	# Called automatically whenever something changes that affects the
912	# data in the widget. Clears any existing data and rebuilds the
913	# widget to display new data.
914	# ----------------------------------------------------------------------
915	itcl::body Rappture::VtkVolumeViewer::Rebuild {} {
916	set w [winfo width $itk_component(view)]
917	set h [winfo height $itk_component(view)]
918	if { $w < 2 \|\| $h < 2 } {
919	update
920	$_dispatcher event -idle !rebuild
921	return
922	}
923
924	# Turn on buffering of commands to the server. We don't want to
925	# be preempted by a server disconnect/reconnect (which automatically
926	# generates a new call to Rebuild).
927	StartBufferingCommands
928
929	set _legendPending 1
930
931	if { $_reset } {
932	set _width $w
933	set _height $h
934	$_arcball resize $w $h
935	DoResize
936	#
937	# Reset the camera and other view parameters
938	#
939	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
940	$_arcball quaternion $q
941	if {$_view(ortho)} {
942	SendCmd "camera mode ortho"
943	} else {
944	SendCmd "camera mode persp"
945	}
946	DoRotate
947	InitSettings axis-xgrid axis-ygrid axis-zgrid axisFlyMode \
948	axesVisible axisLabels
949	PanCamera
950	}
951	set _first ""
952
953	SendCmd "imgflush"
954	set _first ""
955
956	SendCmd "dataset visible 0"
957	foreach dataobj [get -objects] {
958	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
959	set _first $dataobj
960	}
961	set _obj2datasets($dataobj) ""
962	foreach comp [$dataobj components] {
963	set tag $dataobj-$comp
964	if { ![info exists _datasets($tag)] } {
965	set bytes [$dataobj vtkdata $comp]
966	set length [string length $bytes]
967	if { $_reportClientInfo } {
968	set info {}
969	lappend info "tool_id" [$dataobj hints toolid]
970	lappend info "tool_name" [$dataobj hints toolname]
971	lappend info "tool_title" [$dataobj hints tooltitle]
972	lappend info "tool_command" [$dataobj hints toolcommand]
973	lappend info "tool_revision" [$dataobj hints toolrevision]
974	lappend info "dataset_label" [$dataobj hints label]
975	lappend info "dataset_size" $length
976	lappend info "dataset_tag" $tag
977	SendCmd [list "clientinfo" $info]
978	}
979	append _outbuf "dataset add $tag data follows $length\n"
980	append _outbuf $bytes
981	set _datasets($tag) 1
982	SetObjectStyle $dataobj $comp
983	}
984	lappend _obj2datasets($dataobj) $tag
985	if { [info exists _obj2ovride($dataobj-raise)] } {
986	SendCmd "dataset visible 1 $tag"
987	}
988	break
989	}
990	}
991	if {"" != $_first} {
992	set location [$_first hints camera]
993	if { $location != "" } {
994	array set view $location
995	}
996
997	foreach axis { x y z } {
998	set label [$_first hints ${axis}label]
999	if { $label != "" } {
1000	SendCmd "axis name $axis $label"
1001	}
1002	set units [$_first hints ${axis}units]
1003	if { $units != "" } {
1004	SendCmd "axis units $axis $units"
1005	}
1006	}
1007	$itk_component(field) choices delete 0 end
1008	$itk_component(fieldmenu) delete 0 end
1009	array unset _fields
1010	set _curFldName ""
1011	foreach cname [$_first components] {
1012	foreach fname [$_first fieldnames $cname] {
1013	if { [info exists _fields($fname)] } {
1014	continue
1015	}
1016	foreach { label units components } \
1017	[$_first fieldinfo $fname] break
1018	# Only scalar fields are valid
1019	if {$components == 1} {
1020	$itk_component(field) choices insert end "$fname" "$label"
1021	$itk_component(fieldmenu) add radiobutton -label "$label" \
1022	-value $label -variable [itcl::scope _curFldLabel] \
1023	-selectcolor red \
1024	-activebackground $itk_option(-plotbackground) \
1025	-activeforeground $itk_option(-plotforeground) \
1026	-font "Arial 8" \
1027	-command [itcl::code $this Combo invoke]
1028	set _fields($fname) [list $label $units $components]
1029	if { $_curFldName == "" } {
1030	set _curFldName $fname
1031	set _curFldLabel $label
1032	}
1033	}
1034	}
1035	}
1036	$itk_component(field) value $_curFldLabel
1037	}
1038
1039	InitSettings volume-palette volume-material volume-quality volumeVisible \
1040	cutplaneVisible \
1041	cutplane-xposition cutplane-yposition cutplane-zposition \
1042	cutplane-xvisible cutplane-yvisible cutplane-zvisible
1043
1044	if { $_reset } {
1045	InitSettings volumeLighting
1046	Zoom reset
1047	set _reset 0
1048	}
1049	# Actually write the commands to the server socket. If it fails, we don't
1050	# care. We're finished here.
1051	blt::busy hold $itk_component(hull)
1052	StopBufferingCommands
1053	blt::busy release $itk_component(hull)
1054	}
1055
1056	# ----------------------------------------------------------------------
1057	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1058	#
1059	# Returns a list of server IDs for the current datasets being displayed. This
1060	# is normally a single ID, but it might be a list of IDs if the current data
1061	# object has multiple components.
1062	# ----------------------------------------------------------------------
1063	itcl::body Rappture::VtkVolumeViewer::CurrentDatasets {args} {
1064	set flag [lindex $args 0]
1065	switch -- $flag {
1066	"-all" {
1067	if { [llength $args] > 1 } {
1068	error "CurrentDatasets: can't specify dataobj after \"-all\""
1069	}
1070	set dlist [get -objects]
1071	}
1072	"-visible" {
1073	if { [llength $args] > 1 } {
1074	set dlist {}
1075	set args [lrange $args 1 end]
1076	foreach dataobj $args {
1077	if { [info exists _obj2ovride($dataobj-raise)] } {
1078	lappend dlist $dataobj
1079	}
1080	}
1081	} else {
1082	set dlist [get -visible]
1083	}
1084	}
1085	default {
1086	set dlist $args
1087	}
1088	}
1089	set rlist ""
1090	foreach dataobj $dlist {
1091	foreach comp [$dataobj components] {
1092	set tag $dataobj-$comp
1093	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1094	lappend rlist $tag
1095	}
1096	}
1097	}
1098	return $rlist
1099	}
1100
1101	# ----------------------------------------------------------------------
1102	# USAGE: Zoom in
1103	# USAGE: Zoom out
1104	# USAGE: Zoom reset
1105	#
1106	# Called automatically when the user clicks on one of the zoom
1107	# controls for this widget. Changes the zoom for the current view.
1108	# ----------------------------------------------------------------------
1109	itcl::body Rappture::VtkVolumeViewer::Zoom {option} {
1110	switch -- $option {
1111	"in" {
1112	set _view(zoom) [expr {$_view(zoom)*1.25}]
1113	SendCmd "camera zoom $_view(zoom)"
1114	}
1115	"out" {
1116	set _view(zoom) [expr {$_view(zoom)*0.8}]
1117	SendCmd "camera zoom $_view(zoom)"
1118	}
1119	"reset" {
1120	array set _view {
1121	qw 0.853553
1122	qx -0.353553
1123	qy 0.353553
1124	qz 0.146447
1125	zoom 1.0
1126	xpan 0
1127	ypan 0
1128	}
1129	if { $_first != "" } {
1130	set location [$_first hints camera]
1131	if { $location != "" } {
1132	array set _view $location
1133	}
1134	}
1135	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1136	$_arcball quaternion $q
1137	DoRotate
1138	SendCmd "camera reset"
1139	}
1140	}
1141	}
1142
1143	itcl::body Rappture::VtkVolumeViewer::PanCamera {} {
1144	set x $_view(xpan)
1145	set y $_view(ypan)
1146	SendCmd "camera pan $x $y"
1147	}
1148
1149
1150	# ----------------------------------------------------------------------
1151	# USAGE: Rotate click <x> <y>
1152	# USAGE: Rotate drag <x> <y>
1153	# USAGE: Rotate release <x> <y>
1154	#
1155	# Called automatically when the user clicks/drags/releases in the
1156	# plot area. Moves the plot according to the user's actions.
1157	# ----------------------------------------------------------------------
1158	itcl::body Rappture::VtkVolumeViewer::Rotate {option x y} {
1159	switch -- $option {
1160	"click" {
1161	$itk_component(view) configure -cursor fleur
1162	set _click(x) $x
1163	set _click(y) $y
1164	}
1165	"drag" {
1166	if {[array size _click] == 0} {
1167	Rotate click $x $y
1168	} else {
1169	set w [winfo width $itk_component(view)]
1170	set h [winfo height $itk_component(view)]
1171	if {$w <= 0 \|\| $h <= 0} {
1172	return
1173	}
1174
1175	if {[catch {
1176	# this fails sometimes for no apparent reason
1177	set dx [expr {double($x-$_click(x))/$w}]
1178	set dy [expr {double($y-$_click(y))/$h}]
1179	}]} {
1180	return
1181	}
1182	if { $dx == 0 && $dy == 0 } {
1183	return
1184	}
1185	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1186	EventuallyRotate $q
1187	set _click(x) $x
1188	set _click(y) $y
1189	}
1190	}
1191	"release" {
1192	Rotate drag $x $y
1193	$itk_component(view) configure -cursor ""
1194	catch {unset _click}
1195	}
1196	default {
1197	error "bad option \"$option\": should be click, drag, release"
1198	}
1199	}
1200	}
1201
1202	itcl::body Rappture::VtkVolumeViewer::Pick {x y} {
1203	foreach tag [CurrentDatasets -visible] {
1204	SendCmd "dataset getscalar pixel $x $y $tag"
1205	}
1206	}
1207
1208	# ----------------------------------------------------------------------
1209	# USAGE: $this Pan click x y
1210	# $this Pan drag x y
1211	# $this Pan release x y
1212	#
1213	# Called automatically when the user clicks on one of the zoom
1214	# controls for this widget. Changes the zoom for the current view.
1215	# ----------------------------------------------------------------------
1216	itcl::body Rappture::VtkVolumeViewer::Pan {option x y} {
1217	switch -- $option {
1218	"set" {
1219	set w [winfo width $itk_component(view)]
1220	set h [winfo height $itk_component(view)]
1221	set x [expr $x / double($w)]
1222	set y [expr $y / double($h)]
1223	set _view(xpan) [expr $_view(xpan) + $x]
1224	set _view(ypan) [expr $_view(ypan) + $y]
1225	PanCamera
1226	return
1227	}
1228	"click" {
1229	set _click(x) $x
1230	set _click(y) $y
1231	$itk_component(view) configure -cursor hand1
1232	}
1233	"drag" {
1234	if { ![info exists _click(x)] } {
1235	set _click(x) $x
1236	}
1237	if { ![info exists _click(y)] } {
1238	set _click(y) $y
1239	}
1240	set w [winfo width $itk_component(view)]
1241	set h [winfo height $itk_component(view)]
1242	set dx [expr ($_click(x) - $x)/double($w)]
1243	set dy [expr ($_click(y) - $y)/double($h)]
1244	set _click(x) $x
1245	set _click(y) $y
1246	set _view(xpan) [expr $_view(xpan) - $dx]
1247	set _view(ypan) [expr $_view(ypan) - $dy]
1248	PanCamera
1249	}
1250	"release" {
1251	Pan drag $x $y
1252	$itk_component(view) configure -cursor ""
1253	}
1254	default {
1255	error "unknown option \"$option\": should set, click, drag, or release"
1256	}
1257	}
1258	}
1259
1260	# ----------------------------------------------------------------------
1261	# USAGE: InitSettings <what> ?<value>?
1262	#
1263	# Used internally to update rendering settings whenever parameters
1264	# change in the popup settings panel. Sends the new settings off
1265	# to the back end.
1266	# ----------------------------------------------------------------------
1267	itcl::body Rappture::VtkVolumeViewer::InitSettings { args } {
1268	foreach spec $args {
1269	if { [info exists _settings($_first-$spec)] } {
1270	# Reset global setting with dataobj specific setting
1271	set _settings($spec) $_settings($_first-$spec)
1272	}
1273	AdjustSetting $spec
1274	}
1275	}
1276
1277	#
1278	# AdjustSetting --
1279	#
1280	# Changes/updates a specific setting in the widget. There are
1281	# usually user-setable option. Commands are sent to the render
1282	# server.
1283	#
1284	itcl::body Rappture::VtkVolumeViewer::AdjustSetting {what {value ""}} {
1285	if { ![isconnected] } {
1286	return
1287	}
1288	switch -- $what {
1289	"volumeVisible" {
1290	set bool $_settings(volumeVisible)
1291	foreach dataset [CurrentDatasets -visible] {
1292	SendCmd "volume visible $bool $dataset"
1293	}
1294	if { $bool } {
1295	Rappture::Tooltip::for $itk_component(volume) \
1296	"Hide the volume"
1297	} else {
1298	Rappture::Tooltip::for $itk_component(volume) \
1299	"Show the volume"
1300	}
1301	}
1302	"volume-material" {
1303	set val $_settings(volume-material)
1304	set diffuse [expr {0.01*$val}]
1305	set specular [expr {0.01*$val}]
1306	#set power [expr {sqrt(160*$val+1.0)}]
1307	set power [expr {$val+1.0}]
1308	foreach dataset [CurrentDatasets -visible] {
1309	SendCmd "volume shading diffuse $diffuse $dataset"
1310	SendCmd "volume shading specular $specular $power $dataset"
1311	}
1312	}
1313	"volumeLighting" {
1314	set bool $_settings(volumeLighting)
1315	foreach dataset [CurrentDatasets -visible] {
1316	SendCmd "volume lighting $bool $dataset"
1317	}
1318	}
1319	"volume-quality" {
1320	set val $_settings(volume-quality)
1321	set val [expr {0.01*$val}]
1322	foreach dataset [CurrentDatasets -visible] {
1323	SendCmd "volume quality $val $dataset"
1324	}
1325	}
1326	"axesVisible" {
1327	set bool $_settings(axesVisible)
1328	SendCmd "axis visible all $bool"
1329	}
1330	"axisLabels" {
1331	set bool $_settings(axisLabels)
1332	SendCmd "axis labels all $bool"
1333	}
1334	"axis-xgrid" - "axis-ygrid" - "axis-zgrid" {
1335	set axis [string range $what 5 5]
1336	set bool $_settings($what)
1337	SendCmd "axis grid $axis $bool"
1338	}
1339	"axisFlyMode" {
1340	set mode [$itk_component(axismode) value]
1341	set mode [$itk_component(axismode) translate $mode]
1342	set _settings($what) $mode
1343	SendCmd "axis flymode $mode"
1344	}
1345	"cutplaneEdges" {
1346	set bool $_settings($what)
1347	foreach dataset [CurrentDatasets -visible] {
1348	SendCmd "cutplane edges $bool $dataset"
1349	}
1350	}
1351	"cutplaneVisible" {
1352	set bool $_settings($what)
1353	foreach dataset [CurrentDatasets -visible] {
1354	SendCmd "cutplane visible $bool $dataset"
1355	}
1356	}
1357	"cutplaneWireframe" {
1358	set bool $_settings($what)
1359	foreach dataset [CurrentDatasets -visible] {
1360	SendCmd "cutplane wireframe $bool $dataset"
1361	}
1362	}
1363	"cutplaneLighting" {
1364	set bool $_settings($what)
1365	foreach dataset [CurrentDatasets -visible] {
1366	SendCmd "cutplane lighting $bool $dataset"
1367	}
1368	}
1369	"cutplane-opacity" {
1370	set val $_settings($what)
1371	set sval [expr { 0.01 * double($val) }]
1372	foreach dataset [CurrentDatasets -visible] {
1373	SendCmd "cutplane opacity $sval $dataset"
1374	}
1375	}
1376	"cutplane-xvisible" - "cutplane-yvisible" - "cutplane-zvisible" {
1377	set axis [string range $what 9 9]
1378	set bool $_settings($what)
1379	if { $bool } {
1380	$itk_component(${axis}CutScale) configure -state normal \
1381	-troughcolor white
1382	} else {
1383	$itk_component(${axis}CutScale) configure -state disabled \
1384	-troughcolor grey82
1385	}
1386	foreach dataset [CurrentDatasets -visible] {
1387	SendCmd "cutplane axis $axis $bool $dataset"
1388	}
1389	}
1390	"cutplane-xposition" - "cutplane-yposition" - "cutplane-zposition" {
1391	set axis [string range $what 9 9]
1392	set pos [expr $_settings($what) * 0.01]
1393	foreach dataset [CurrentDatasets -visible] {
1394	SendCmd "cutplane slice ${axis} ${pos} $dataset"
1395	}
1396	set _cutplanePending 0
1397	}
1398	"volume-palette" {
1399	set palette [$itk_component(palette) value]
1400	set _settings(volume-palette) $palette
1401	foreach dataset [CurrentDatasets -visible $_first] {
1402	foreach {dataobj comp} [split $dataset -] break
1403	ChangeColormap $dataobj $comp $palette
1404	}
1405	set _legendPending 1
1406	}
1407	"volume-palette" {
1408	set palette [$itk_component(palette) value]
1409	set _settings(volume-palette) $palette
1410	foreach dataset [CurrentDatasets -visible $_first] {
1411	foreach {dataobj comp} [split $dataset -] break
1412	ChangeColormap $dataobj $comp $palette
1413	}
1414	set _legendPending 1
1415	}
1416	"field" {
1417	set label [$itk_component(field) value]
1418	set fname [$itk_component(field) translate $label]
1419	set _settings(field) $fname
1420	if { [info exists _fields($fname)] } {
1421	foreach { label units components } $_fields($fname) break
1422	if { $components > 1 } {
1423	puts stderr "Can't use a vector field in a volume"
1424	return
1425	} else {
1426	set _colorMode scalar
1427	}
1428	set _curFldName $fname
1429	set _curFldLabel $label
1430	} else {
1431	puts stderr "unknown field \"$fname\""
1432	return
1433	}
1434	foreach dataset [CurrentDatasets -visible $_first] {
1435	#SendCmd "volume colormode $_colorMode ${fname} $dataset"
1436	SendCmd "cutplane colormode $_colorMode ${fname} $dataset"
1437	}
1438	SendCmd "camera reset"
1439	DrawLegend
1440	}
1441	default {
1442	error "don't know how to fix $what"
1443	}
1444	}
1445	}
1446
1447	#
1448	# RequestLegend --
1449	#
1450	# Request a new legend from the server. The size of the legend
1451	# is determined from the height of the canvas. It will be rotated
1452	# to be vertical when drawn.
1453	#
1454	itcl::body Rappture::VtkVolumeViewer::RequestLegend {} {
1455	set font "Arial 8"
1456	set lineht [font metrics $font -linespace]
1457	set c $itk_component(legend)
1458	set w 12
1459	set h [expr {$_height - 3 * ($lineht + 2)}]
1460	if { $h < 1} {
1461	return
1462	}
1463	# Set the legend on the first volume dataset.
1464	foreach dataset [CurrentDatasets -visible $_first] {
1465	foreach {dataobj comp} [split $dataset -] break
1466	if { [info exists _dataset2style($dataset)] } {
1467	#SendCmd "legend $_dataset2style($dataset) $_colorMode $_curFldName {} $w $h 0"
1468	SendCmd "legend2 $_dataset2style($dataset) $w $h"
1469	break;
1470	}
1471	}
1472	}
1473
1474	#
1475	# ChangeColormap --
1476	#
1477	itcl::body Rappture::VtkVolumeViewer::ChangeColormap {dataobj comp color} {
1478	set tag $dataobj-$comp
1479	if { ![info exist _style($tag)] } {
1480	error "no initial colormap"
1481	}
1482	array set style $_style($tag)
1483	set style(-color) $color
1484	set _style($tag) [array get style]
1485	SetColormap $dataobj $comp
1486	}
1487
1488	#
1489	# SetColormap --
1490	#
1491	itcl::body Rappture::VtkVolumeViewer::SetColormap { dataobj comp } {
1492	array set style {
1493	-color BCGYR
1494	-levels 6
1495	-opacity 1.0
1496	}
1497	set tag $dataobj-$comp
1498	if { ![info exists _initialStyle($tag)] } {
1499	# Save the initial component style.
1500	set _initialStyle($tag) [$dataobj style $comp]
1501	}
1502
1503	# Override defaults with initial style defined in xml.
1504	array set style $_initialStyle($tag)
1505
1506	if { ![info exists _style($tag)] } {
1507	set _style($tag) [array get style]
1508	}
1509	# Override initial style with current style.
1510	array set style $_style($tag)
1511
1512	set name "$style(-color):$style(-levels):$style(-opacity)"
1513	if { ![info exists _colormaps($name)] } {
1514	BuildColormap $name [array get style]
1515	set _colormaps($name) 1
1516	}
1517	if { ![info exists _dataset2style($tag)] \|\|
1518	$_dataset2style($tag) != $name } {
1519	SendCmd "volume colormap $name $tag"
1520	SendCmd "cutplane colormap $name-opaque $tag"
1521	set _dataset2style($tag) $name
1522	}
1523	}
1524
1525	#
1526	# BuildColormap --
1527	#
1528	itcl::body Rappture::VtkVolumeViewer::BuildColormap { name styles } {
1529	array set style $styles
1530	set cmap [ColorsToColormap $style(-color)]
1531	if { [llength $cmap] == 0 } {
1532	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1533	}
1534	if { ![info exists _settings(volume-opacity)] } {
1535	set _settings(volume-opacity) $style(-opacity)
1536	}
1537	set max $_settings(volume-opacity)
1538
1539	set opaqueWmap "0.0 1.0 1.0 1.0"
1540	#set wmap "0.0 0.0 0.1 0.0 0.2 0.8 0.98 0.8 0.99 0.0 1.0 0.0"
1541	# Approximate cubic opacity curve
1542	set wmap "0.0 0.0 0.1 0.001 0.2 0.008 0.3 0.027 0.4 0.064 0.5 0.125 0.6 0.216 0.7 0.343 0.8 0.512 0.9 0.729 1.0 1.0"
1543	SendCmd "colormap add $name { $cmap } { $wmap }"
1544	SendCmd "colormap add $name-opaque { $cmap } { $opaqueWmap }"
1545	}
1546
1547	# ----------------------------------------------------------------------
1548	# CONFIGURATION OPTION: -plotbackground
1549	# ----------------------------------------------------------------------
1550	itcl::configbody Rappture::VtkVolumeViewer::plotbackground {
1551	if { [isconnected] } {
1552	foreach {r g b} [Color2RGB $itk_option(-plotbackground)] break
1553	SendCmd "screen bgcolor $r $g $b"
1554	}
1555	}
1556
1557	# ----------------------------------------------------------------------
1558	# CONFIGURATION OPTION: -plotforeground
1559	# ----------------------------------------------------------------------
1560	itcl::configbody Rappture::VtkVolumeViewer::plotforeground {
1561	if { [isconnected] } {
1562	foreach {r g b} [Color2RGB $itk_option(-plotforeground)] break
1563	#fix this!
1564	#SendCmd "color background $r $g $b"
1565	}
1566	}
1567
1568	itcl::body Rappture::VtkVolumeViewer::BuildVolumeTab {} {
1569
1570	set fg [option get $itk_component(hull) font Font]
1571	#set bfg [option get $itk_component(hull) boldFont Font]
1572
1573	set inner [$itk_component(main) insert end \
1574	-title "Volume Settings" \
1575	-icon [Rappture::icon volume-on]]
1576	$inner configure -borderwidth 4
1577
1578	checkbutton $inner.volume \
1579	-text "Show Volume" \
1580	-variable [itcl::scope _settings(volumeVisible)] \
1581	-command [itcl::code $this AdjustSetting volumeVisible] \
1582	-font "Arial 9"
1583
1584	checkbutton $inner.lighting \
1585	-text "Enable Lighting" \
1586	-variable [itcl::scope _settings(volumeLighting)] \
1587	-command [itcl::code $this AdjustSetting volumeLighting] \
1588	-font "Arial 9"
1589
1590	label $inner.dim_l -text "Dim" -font "Arial 9"
1591	::scale $inner.material -from 0 -to 100 -orient horizontal \
1592	-variable [itcl::scope _settings(volume-material)] \
1593	-width 10 \
1594	-showvalue off -command [itcl::code $this AdjustSetting volume-material]
1595	label $inner.bright_l -text "Bright" -font "Arial 9"
1596
1597	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1598	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1599	-variable [itcl::scope _settings(volume-opacity)] \
1600	-width 10 \
1601	-showvalue off \
1602	-command [itcl::code $this AdjustSetting volume-opacity]
1603
1604	label $inner.quality_l -text "Quality" -font "Arial 9"
1605	::scale $inner.quality -from 0 -to 100 -orient horizontal \
1606	-variable [itcl::scope _settings(volume-quality)] \
1607	-width 10 \
1608	-showvalue off -command [itcl::code $this AdjustSetting volume-quality]
1609
1610	itk_component add field_l {
1611	label $inner.field_l -text "Field" -font "Arial 9"
1612	} {
1613	ignore -font
1614	}
1615	itk_component add field {
1616	Rappture::Combobox $inner.field -width 10 -editable no
1617	}
1618	bind $inner.field <<Value>> \
1619	[itcl::code $this AdjustSetting field]
1620
1621	label $inner.palette_l -text "Palette" -font "Arial 9"
1622	itk_component add palette {
1623	Rappture::Combobox $inner.palette -width 10 -editable no
1624	}
1625	$inner.colormap choices insert end [GetColormapList]
1626
1627	$itk_component(palette) value "BCGYR"
1628	bind $inner.palette <<Value>> \
1629	[itcl::code $this AdjustSetting volume-palette]
1630
1631	blt::table $inner \
1632	0,0 $inner.field_l -anchor w -pady 2 \
1633	0,1 $inner.field -anchor w -pady 2 -cspan 2 \
1634	1,0 $inner.volume -anchor w -pady 2 -cspan 4 \
1635	2,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
1636	3,0 $inner.dim_l -anchor e -pady 2 \
1637	3,1 $inner.material -fill x -pady 2 \
1638	3,2 $inner.bright_l -anchor w -pady 2 \
1639	4,0 $inner.quality_l -anchor w -pady 2 -cspan 2 \
1640	5,0 $inner.quality -fill x -pady 2 -cspan 2 \
1641	7,0 $inner.palette_l -anchor w -pady 2 \
1642	7,1 $inner.palette -anchor w -pady 2 -cspan 2 \
1643
1644	blt::table configure $inner r* c* -resize none
1645	blt::table configure $inner r8 -resize expand
1646	}
1647
1648	itcl::body Rappture::VtkVolumeViewer::BuildAxisTab {} {
1649
1650	set fg [option get $itk_component(hull) font Font]
1651	#set bfg [option get $itk_component(hull) boldFont Font]
1652
1653	set inner [$itk_component(main) insert end \
1654	-title "Axis Settings" \
1655	-icon [Rappture::icon axis1]]
1656	$inner configure -borderwidth 4
1657
1658	checkbutton $inner.visible \
1659	-text "Show Axes" \
1660	-variable [itcl::scope _settings(axesVisible)] \
1661	-command [itcl::code $this AdjustSetting axesVisible] \
1662	-font "Arial 9"
1663
1664	checkbutton $inner.labels \
1665	-text "Show Axis Labels" \
1666	-variable [itcl::scope _settings(axisLabels)] \
1667	-command [itcl::code $this AdjustSetting axisLabels] \
1668	-font "Arial 9"
1669
1670	checkbutton $inner.gridx \
1671	-text "Show X Grid" \
1672	-variable [itcl::scope _settings(axis-xgrid)] \
1673	-command [itcl::code $this AdjustSetting axis-xgrid] \
1674	-font "Arial 9"
1675	checkbutton $inner.gridy \
1676	-text "Show Y Grid" \
1677	-variable [itcl::scope _settings(axis-ygrid)] \
1678	-command [itcl::code $this AdjustSetting axis-ygrid] \
1679	-font "Arial 9"
1680	checkbutton $inner.gridz \
1681	-text "Show Z Grid" \
1682	-variable [itcl::scope _settings(axis-zgrid)] \
1683	-command [itcl::code $this AdjustSetting axis-zgrid] \
1684	-font "Arial 9"
1685
1686	label $inner.mode_l -text "Mode" -font "Arial 9"
1687
1688	itk_component add axismode {
1689	Rappture::Combobox $inner.mode -width 10 -editable no
1690	}
1691	$inner.mode choices insert end \
1692	"static_triad" "static" \
1693	"closest_triad" "closest" \
1694	"furthest_triad" "furthest" \
1695	"outer_edges" "outer"
1696	$itk_component(axismode) value "static"
1697	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlyMode]
1698
1699	blt::table $inner \
1700	0,0 $inner.visible -anchor w -cspan 2 \
1701	1,0 $inner.labels -anchor w -cspan 2 \
1702	2,0 $inner.gridx -anchor w -cspan 2 \
1703	3,0 $inner.gridy -anchor w -cspan 2 \
1704	4,0 $inner.gridz -anchor w -cspan 2 \
1705	5,0 $inner.mode_l -anchor w -cspan 2 -padx { 2 0 } \
1706	6,0 $inner.mode -fill x -cspan 2
1707
1708	blt::table configure $inner r* c* -resize none
1709	blt::table configure $inner r7 c1 -resize expand
1710	}
1711
1712
1713	itcl::body Rappture::VtkVolumeViewer::BuildCameraTab {} {
1714	set inner [$itk_component(main) insert end \
1715	-title "Camera Settings" \
1716	-icon [Rappture::icon camera]]
1717	$inner configure -borderwidth 4
1718
1719	set labels { qx qy qz qw xpan ypan zoom }
1720	set row 0
1721	foreach tag $labels {
1722	label $inner.${tag}label -text $tag -font "Arial 9"
1723	entry $inner.${tag} -font "Arial 9" -bg white \
1724	-textvariable [itcl::scope _view($tag)]
1725	bind $inner.${tag} <KeyPress-Return> \
1726	[itcl::code $this camera set ${tag}]
1727	blt::table $inner \
1728	$row,0 $inner.${tag}label -anchor e -pady 2 \
1729	$row,1 $inner.${tag} -anchor w -pady 2
1730	blt::table configure $inner r$row -resize none
1731	incr row
1732	}
1733	checkbutton $inner.ortho \
1734	-text "Orthographic Projection" \
1735	-variable [itcl::scope _view(ortho)] \
1736	-command [itcl::code $this camera set ortho] \
1737	-font "Arial 9"
1738	blt::table $inner \
1739	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1740	blt::table configure $inner r$row -resize none
1741	incr row
1742
1743	blt::table configure $inner c0 c1 -resize none
1744	blt::table configure $inner c2 -resize expand
1745	blt::table configure $inner r$row -resize expand
1746	}
1747
1748	itcl::body Rappture::VtkVolumeViewer::BuildCutplaneTab {} {
1749
1750	set fg [option get $itk_component(hull) font Font]
1751
1752	set inner [$itk_component(main) insert end \
1753	-title "Cutplane Settings" \
1754	-icon [Rappture::icon cutbutton]]
1755
1756	$inner configure -borderwidth 4
1757
1758	checkbutton $inner.visible \
1759	-text "Show Cutplanes" \
1760	-variable [itcl::scope _settings(cutplaneVisible)] \
1761	-command [itcl::code $this AdjustSetting cutplaneVisible] \
1762	-font "Arial 9"
1763
1764	checkbutton $inner.wireframe \
1765	-text "Show Wireframe" \
1766	-variable [itcl::scope _settings(cutplaneWireframe)] \
1767	-command [itcl::code $this AdjustSetting cutplaneWireframe] \
1768	-font "Arial 9"
1769
1770	checkbutton $inner.lighting \
1771	-text "Enable Lighting" \
1772	-variable [itcl::scope _settings(cutplaneLighting)] \
1773	-command [itcl::code $this AdjustSetting cutplaneLighting] \
1774	-font "Arial 9"
1775
1776	checkbutton $inner.edges \
1777	-text "Show Edges" \
1778	-variable [itcl::scope _settings(cutplaneEdges)] \
1779	-command [itcl::code $this AdjustSetting cutplaneEdges] \
1780	-font "Arial 9"
1781
1782	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1783	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1784	-variable [itcl::scope _settings(cutplane-opacity)] \
1785	-width 10 \
1786	-showvalue off \
1787	-command [itcl::code $this AdjustSetting cutplane-opacity]
1788	$inner.opacity set $_settings(cutplane-opacity)
1789
1790	# X-value slicer...
1791	itk_component add xCutButton {
1792	Rappture::PushButton $inner.xbutton \
1793	-onimage [Rappture::icon x-cutplane] \
1794	-offimage [Rappture::icon x-cutplane] \
1795	-command [itcl::code $this AdjustSetting cutplane-xvisible] \
1796	-variable [itcl::scope _settings(cutplane-xvisible)]
1797	}
1798	Rappture::Tooltip::for $itk_component(xCutButton) \
1799	"Toggle the X-axis cutplane on/off"
1800	$itk_component(xCutButton) select
1801
1802	itk_component add xCutScale {
1803	::scale $inner.xval -from 100 -to 0 \
1804	-width 10 -orient vertical -showvalue yes \
1805	-borderwidth 1 -highlightthickness 0 \
1806	-command [itcl::code $this EventuallySetCutplane x] \
1807	-variable [itcl::scope _settings(cutplane-xposition)]
1808	} {
1809	usual
1810	ignore -borderwidth -highlightthickness
1811	}
1812	# Set the default cutplane value before disabling the scale.
1813	$itk_component(xCutScale) set 50
1814	$itk_component(xCutScale) configure -state disabled
1815	Rappture::Tooltip::for $itk_component(xCutScale) \
1816	"@[itcl::code $this Slice tooltip x]"
1817
1818	# Y-value slicer...
1819	itk_component add yCutButton {
1820	Rappture::PushButton $inner.ybutton \
1821	-onimage [Rappture::icon y-cutplane] \
1822	-offimage [Rappture::icon y-cutplane] \
1823	-command [itcl::code $this AdjustSetting cutplane-yvisible] \
1824	-variable [itcl::scope _settings(cutplane-yvisible)]
1825	}
1826	Rappture::Tooltip::for $itk_component(yCutButton) \
1827	"Toggle the Y-axis cutplane on/off"
1828	$itk_component(yCutButton) select
1829
1830	itk_component add yCutScale {
1831	::scale $inner.yval -from 100 -to 0 \
1832	-width 10 -orient vertical -showvalue yes \
1833	-borderwidth 1 -highlightthickness 0 \
1834	-command [itcl::code $this EventuallySetCutplane y] \
1835	-variable [itcl::scope _settings(cutplane-yposition)]
1836	} {
1837	usual
1838	ignore -borderwidth -highlightthickness
1839	}
1840	Rappture::Tooltip::for $itk_component(yCutScale) \
1841	"@[itcl::code $this Slice tooltip y]"
1842	# Set the default cutplane value before disabling the scale.
1843	$itk_component(yCutScale) set 50
1844	$itk_component(yCutScale) configure -state disabled
1845
1846	# Z-value slicer...
1847	itk_component add zCutButton {
1848	Rappture::PushButton $inner.zbutton \
1849	-onimage [Rappture::icon z-cutplane] \
1850	-offimage [Rappture::icon z-cutplane] \
1851	-command [itcl::code $this AdjustSetting cutplane-zvisible] \
1852	-variable [itcl::scope _settings(cutplane-zvisible)]
1853	}
1854	Rappture::Tooltip::for $itk_component(zCutButton) \
1855	"Toggle the Z-axis cutplane on/off"
1856	$itk_component(zCutButton) select
1857
1858	itk_component add zCutScale {
1859	::scale $inner.zval -from 100 -to 0 \
1860	-width 10 -orient vertical -showvalue yes \
1861	-borderwidth 1 -highlightthickness 0 \
1862	-command [itcl::code $this EventuallySetCutplane z] \
1863	-variable [itcl::scope _settings(cutplane-zposition)]
1864	} {
1865	usual
1866	ignore -borderwidth -highlightthickness
1867	}
1868	$itk_component(zCutScale) set 50
1869	$itk_component(zCutScale) configure -state disabled
1870	Rappture::Tooltip::for $itk_component(zCutScale) \
1871	"@[itcl::code $this Slice tooltip z]"
1872
1873	blt::table $inner \
1874	0,0 $inner.visible -anchor w -pady 2 -cspan 4 \
1875	1,0 $inner.lighting -anchor w -pady 2 -cspan 4 \
1876	2,0 $inner.wireframe -anchor w -pady 2 -cspan 4 \
1877	3,0 $inner.edges -anchor w -pady 2 -cspan 4 \
1878	4,0 $inner.opacity_l -anchor w -pady 2 -cspan 3 \
1879	5,0 $inner.opacity -fill x -pady 2 -cspan 3 \
1880	6,0 $itk_component(xCutButton) -anchor e -padx 2 -pady 2 \
1881	7,0 $itk_component(xCutScale) -fill y \
1882	6,1 $itk_component(yCutButton) -anchor e -padx 2 -pady 2 \
1883	7,1 $itk_component(yCutScale) -fill y \
1884	6,2 $itk_component(zCutButton) -anchor e -padx 2 -pady 2 \
1885	7,2 $itk_component(zCutScale) -fill y \
1886
1887	blt::table configure $inner r* c* -resize none
1888	blt::table configure $inner r7 c3 -resize expand
1889	}
1890
1891	#
1892	# camera --
1893	#
1894	itcl::body Rappture::VtkVolumeViewer::camera {option args} {
1895	switch -- $option {
1896	"show" {
1897	puts [array get _view]
1898	}
1899	"set" {
1900	set who [lindex $args 0]
1901	set x $_view($who)
1902	set code [catch { string is double $x } result]
1903	if { $code != 0 \|\| !$result } {
1904	return
1905	}
1906	switch -- $who {
1907	"ortho" {
1908	if {$_view(ortho)} {
1909	SendCmd "camera mode ortho"
1910	} else {
1911	SendCmd "camera mode persp"
1912	}
1913	}
1914	"xpan" - "ypan" {
1915	PanCamera
1916	}
1917	"qx" - "qy" - "qz" - "qw" {
1918	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1919	$_arcball quaternion $q
1920	EventuallyRotate $q
1921	}
1922	"zoom" {
1923	SendCmd "camera zoom $_view(zoom)"
1924	}
1925	}
1926	}
1927	}
1928	}
1929
1930	itcl::body Rappture::VtkVolumeViewer::GetVtkData { args } {
1931	set bytes ""
1932	foreach dataobj [get] {
1933	foreach comp [$dataobj components] {
1934	set tag $dataobj-$comp
1935	set contents [$dataobj vtkdata $comp]
1936	append bytes "$contents\n"
1937	}
1938	}
1939	return [list .vtk $bytes]
1940	}
1941
1942	itcl::body Rappture::VtkVolumeViewer::GetImage { args } {
1943	if { [image width $_image(download)] > 0 &&
1944	[image height $_image(download)] > 0 } {
1945	set bytes [$_image(download) data -format "jpeg -quality 100"]
1946	set bytes [Rappture::encoding::decode -as b64 $bytes]
1947	return [list .jpg $bytes]
1948	}
1949	return ""
1950	}
1951
1952	itcl::body Rappture::VtkVolumeViewer::BuildDownloadPopup { popup command } {
1953	Rappture::Balloon $popup \
1954	-title "[Rappture::filexfer::label downloadWord] as..."
1955	set inner [$popup component inner]
1956	label $inner.summary -text "" -anchor w
1957	radiobutton $inner.vtk_button -text "VTK data file" \
1958	-variable [itcl::scope _downloadPopup(format)] \
1959	-font "Helvetica 9 " \
1960	-value vtk
1961	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
1962	radiobutton $inner.image_button -text "Image File" \
1963	-variable [itcl::scope _downloadPopup(format)] \
1964	-value image
1965	Rappture::Tooltip::for $inner.image_button \
1966	"Save as digital image."
1967
1968	button $inner.ok -text "Save" \
1969	-highlightthickness 0 -pady 2 -padx 3 \
1970	-command $command \
1971	-compound left \
1972	-image [Rappture::icon download]
1973
1974	button $inner.cancel -text "Cancel" \
1975	-highlightthickness 0 -pady 2 -padx 3 \
1976	-command [list $popup deactivate] \
1977	-compound left \
1978	-image [Rappture::icon cancel]
1979
1980	blt::table $inner \
1981	0,0 $inner.summary -cspan 2 \
1982	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
1983	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
1984	4,1 $inner.cancel -width .9i -fill y \
1985	4,0 $inner.ok -padx 2 -width .9i -fill y
1986	blt::table configure $inner r3 -height 4
1987	blt::table configure $inner r4 -pady 4
1988	raise $inner.image_button
1989	$inner.vtk_button invoke
1990	return $inner
1991	}
1992
1993	itcl::body Rappture::VtkVolumeViewer::SetObjectStyle { dataobj comp } {
1994	# Parse style string.
1995	set tag $dataobj-$comp
1996	set style [$dataobj style $comp]
1997	array set settings {
1998	-color \#808080
1999	-edges 0
2000	-edgecolor black
2001	-linewidth 1.0
2002	-opacity 0.4
2003	-wireframe 0
2004	-lighting 1
2005	-seeds 1
2006	-seedcolor white
2007	-visible 1
2008	}
2009	if { $dataobj != $_first } {
2010	set settings(-opacity) 1
2011	}
2012	array set settings $style
2013	SendCmd "volume add $tag"
2014	SendCmd "cutplane add $tag"
2015	SendCmd "cutplane visible 0 $tag"
2016
2017	SendCmd "volume lighting $settings(-lighting) $tag"
2018	set _settings(volumeLighting) $settings(-lighting)
2019	SetColormap $dataobj $comp
2020	}
2021
2022	itcl::body Rappture::VtkVolumeViewer::IsValidObject { dataobj } {
2023	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2024	return 0
2025	}
2026	return 1
2027	}
2028
2029	# ----------------------------------------------------------------------
2030	# USAGE: ReceiveLegend <colormap> <title> <vmin> <vmax> <size>
2031	#
2032	# Invoked automatically whenever the "legend" command comes in from
2033	# the rendering server. Indicates that binary image data with the
2034	# specified <size> will follow.
2035	# ----------------------------------------------------------------------
2036	itcl::body Rappture::VtkVolumeViewer::ReceiveLegend { colormap title vmin vmax size } {
2037	set _legendPending 0
2038	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$vmin,$vmax size=$size"
2039	if { [IsConnected] } {
2040	set bytes [ReceiveBytes $size]
2041	if { ![info exists _image(legend)] } {
2042	set _image(legend) [image create photo]
2043	}
2044	$_image(legend) configure -data $bytes
2045	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2046	if { [catch {DrawLegend} errs] != 0 } {
2047	puts stderr errs=$errs
2048	}
2049	}
2050	}
2051
2052	#
2053	# DrawLegend --
2054	#
2055	# Draws the legend in it's own canvas which resides to the right
2056	# of the contour plot area.
2057	#
2058	itcl::body Rappture::VtkVolumeViewer::DrawLegend { } {
2059	set fname $_curFldName
2060	set c $itk_component(view)
2061	set w [winfo width $c]
2062	set h [winfo height $c]
2063	set font "Arial 8"
2064	set lineht [font metrics $font -linespace]
2065
2066	if { [info exists _fields($fname)] } {
2067	foreach { title units } $_fields($fname) break
2068	if { $units != "" } {
2069	set title [format "%s (%s)" $title $units]
2070	}
2071	} else {
2072	set title $fname
2073	}
2074	if { $_settings(legendVisible) } {
2075	set x [expr $w - 2]
2076	if { [$c find withtag "legend"] == "" } {
2077	set y 2
2078	$c create text $x $y \
2079	-anchor ne \
2080	-fill $itk_option(-plotforeground) -tags "title legend" \
2081	-font $font
2082	incr y $lineht
2083	$c create text $x $y \
2084	-anchor ne \
2085	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2086	-font $font
2087	incr y $lineht
2088	$c create image $x $y \
2089	-anchor ne \
2090	-image $_image(legend) -tags "colormap legend"
2091	$c create text $x [expr {$h-2}] \
2092	-anchor se \
2093	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2094	-font $font
2095	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2096	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2097	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2098	}
2099	$c bind title <ButtonPress> [itcl::code $this Combo post]
2100	$c bind title <Enter> [itcl::code $this Combo activate]
2101	$c bind title <Leave> [itcl::code $this Combo deactivate]
2102	# Reset the item coordinates according the current size of the plot.
2103	$c itemconfigure title -text $title
2104	if { [info exists _limits($_curFldName)] } {
2105	foreach { vmin vmax } $_limits($_curFldName) break
2106	$c itemconfigure vmin -text [format %g $vmin]
2107	$c itemconfigure vmax -text [format %g $vmax]
2108	}
2109	set y 2
2110	$c coords title $x $y
2111	incr y $lineht
2112	$c coords vmax $x $y
2113	incr y $lineht
2114	$c coords colormap $x $y
2115	$c coords vmin $x [expr {$h - 2}]
2116	}
2117	}
2118
2119	#
2120	# EnterLegend --
2121	#
2122	itcl::body Rappture::VtkVolumeViewer::EnterLegend { x y } {
2123	SetLegendTip $x $y
2124	}
2125
2126	#
2127	# MotionLegend --
2128	#
2129	itcl::body Rappture::VtkVolumeViewer::MotionLegend { x y } {
2130	Rappture::Tooltip::tooltip cancel
2131	set c $itk_component(view)
2132	SetLegendTip $x $y
2133	}
2134
2135	#
2136	# LeaveLegend --
2137	#
2138	itcl::body Rappture::VtkVolumeViewer::LeaveLegend { } {
2139	Rappture::Tooltip::tooltip cancel
2140	.rappturetooltip configure -icon ""
2141	}
2142
2143	#
2144	# SetLegendTip --
2145	#
2146	itcl::body Rappture::VtkVolumeViewer::SetLegendTip { x y } {
2147	set c $itk_component(view)
2148	set w [winfo width $c]
2149	set h [winfo height $c]
2150	set font "Arial 8"
2151	set lineht [font metrics $font -linespace]
2152
2153	set imgHeight [image height $_image(legend)]
2154	set coords [$c coords colormap]
2155	set imgX [expr $w - [image width $_image(legend)] - 2]
2156	set imgY [expr $y - 2 * ($lineht + 2)]
2157
2158	if { [info exists _fields($_title)] } {
2159	foreach { title units } $_fields($_title) break
2160	if { $units != "" } {
2161	set title [format "%s (%s)" $title $units]
2162	}
2163	} else {
2164	set title $_title
2165	}
2166	# Make a swatch of the selected color
2167	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2168	#puts stderr "out of range: $imgY"
2169	return
2170	}
2171	if { ![info exists _image(swatch)] } {
2172	set _image(swatch) [image create photo -width 24 -height 24]
2173	}
2174	set color [eval format "\#%02x%02x%02x" $pixel]
2175	$_image(swatch) put black -to 0 0 23 23
2176	$_image(swatch) put $color -to 1 1 22 22
2177	.rappturetooltip configure -icon $_image(swatch)
2178
2179	# Compute the value of the point
2180	if { [info exists _limits($_curFldName)] } {
2181	foreach { vmin vmax } $_limits($_curFldName) break
2182	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2183	set value [expr $t * ($vmax - $vmin) + $vmin]
2184	} else {
2185	set value 0.0
2186	}
2187	set tipx [expr $x + 15]
2188	set tipy [expr $y - 5]
2189	Rappture::Tooltip::text $c "$title $value"
2190	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2191	}
2192
2193
2194	# ----------------------------------------------------------------------
2195	# USAGE: Slice move x\|y\|z <newval>
2196	#
2197	# Called automatically when the user drags the slider to move the
2198	# cut plane that slices 3D data. Gets the current value from the
2199	# slider and moves the cut plane to the appropriate point in the
2200	# data set.
2201	# ----------------------------------------------------------------------
2202	itcl::body Rappture::VtkVolumeViewer::Slice {option args} {
2203	switch -- $option {
2204	"move" {
2205	set axis [lindex $args 0]
2206	set newval [lindex $args 1]
2207	if {[llength $args] != 2} {
2208	error "wrong # args: should be \"Slice move x\|y\|z newval\""
2209	}
2210	set newpos [expr {0.01*$newval}]
2211	SendCmd "cutplane slice $axis $newpos"
2212	}
2213	"tooltip" {
2214	set axis [lindex $args 0]
2215	set val [$itk_component(${axis}CutScale) get]
2216	return "Move the [string toupper $axis] cut plane.\nCurrently: $axis = $val%"
2217	}
2218	default {
2219	error "bad option \"$option\": should be axis, move, or tooltip"
2220	}
2221	}
2222	}
2223
2224
2225	# ----------------------------------------------------------------------
2226	# USAGE: _dropdown post
2227	# USAGE: _dropdown unpost
2228	# USAGE: _dropdown select
2229	#
2230	# Used internally to handle the dropdown list for this combobox. The
2231	# post/unpost options are invoked when the list is posted or unposted
2232	# to manage the relief of the controlling button. The select option
2233	# is invoked whenever there is a selection from the list, to assign
2234	# the value back to the gauge.
2235	# ----------------------------------------------------------------------
2236	itcl::body Rappture::VtkVolumeViewer::Combo {option} {
2237	set c $itk_component(view)
2238	switch -- $option {
2239	post {
2240	foreach { x1 y1 x2 y2 } [$c bbox title] break
2241	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2242	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2243	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2244	tk_popup $itk_component(fieldmenu) $x $y
2245	}
2246	activate {
2247	$c itemconfigure title -fill red
2248	}
2249	deactivate {
2250	$c itemconfigure title -fill white
2251	}
2252	invoke {
2253	$itk_component(field) value _curFldLabel
2254	AdjustSetting field
2255	}
2256	default {
2257	error "bad option \"$option\": should be post, unpost, select"
2258	}
2259	}
2260	}
2261

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

Download in other formats: