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source: branches/1.3/gui/scripts/vtkheightmapviewer.tcl @ 4438

Last change on this file since 4438 was 4438, checked in by ldelgass, 10 years ago
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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkheightmapviewer - Vtk heightmap viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2014 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 CameraReset {}
67	protected method Connect {}
68	protected method CurrentDatasets {args}
69	protected method Disconnect {}
70	protected method DoResize {}
71	protected method DoRotate {}
72	protected method AdjustSetting {what {value ""}}
73	protected method AdjustMode {}
74	protected method InitSettings { args }
75	protected method Pan {option x y}
76	protected method Pick {x y}
77	protected method Rebuild {}
78	protected method ReceiveDataset { args }
79	protected method ReceiveImage { args }
80	protected method ReceiveLegend { colormap title min max size }
81	protected method Rotate {option x y}
82	protected method Zoom {option}
83
84	# The following methods are only used by this class.
85	private method BuildAxisTab {}
86	private method BuildCameraTab {}
87	private method BuildColormap { name }
88	private method BuildContourTab {}
89	private method BuildDownloadPopup { widget command }
90	private method Combo { option }
91	private method DrawLegend {}
92	private method EnterLegend { x y }
93	private method EventuallyRequestLegend {}
94	private method EventuallyResize { w h }
95	private method EventuallyRotate { q }
96	private method GetImage { args }
97	private method GetVtkData { args }
98	private method IsValidObject { dataobj }
99	private method LeaveLegend {}
100	private method MotionLegend { x y }
101	private method PanCamera {}
102	private method RequestLegend {}
103	private method SetCurrentColormap { color }
104	private method SetLegendTip { x y }
105	private method SetObjectStyle { dataobj comp }
106	private method GetHeightmapScale {}
107	private method ResetAxes {}
108	private method SetOrientation { side }
109	private method UpdateContourList {}
110
111	private variable _arcball ""
112	private variable _dlist "" ; # list of data objects
113	private variable _obj2datasets
114	private variable _obj2ovride ; # maps dataobj => style override
115	private variable _comp2scale; # maps dataset to the heightmap scale.
116	private variable _datasets ; # contains all the dataobj-component
117	; # datasets in the server
118	private variable _colormaps ; # contains all the colormaps
119	; # in the server.
120
121	# The name of the current colormap used. The colormap is global to all
122	# heightmaps displayed.
123	private variable _currentColormap ""
124	private variable _currentNumIsolines -1
125
126	private variable _maxScale 100; # This is the # of times the x-axis
127	# and y-axis ranges can differ before
128	# automatically turning on
129	# -stretchtofit
130
131	private variable _click ; # info used for rotate operations
132	private variable _limits ; # Holds overall limits for all dataobjs
133	# using the viewer.
134	private variable _view ; # view params for 3D view
135	private variable _settings
136	private variable _changed
137	private variable _initialStyle ""; # First found style in dataobjects.
138	private variable _reset 1; # Indicates if camera needs to be reset
139	# to starting position.
140	private variable _beforeConnect 1; # Indicates if camera needs to be reset
141	# to starting position.
142
143	private variable _first "" ; # This is the topmost dataset.
144	private variable _start 0
145	private variable _isolines
146	private variable _contourList ""
147
148	common _downloadPopup; # download options from popup
149	private common _hardcopy
150	private variable _width 0
151	private variable _height 0
152	private variable _legendWidth 0
153	private variable _legendHeight 0
154	private variable _resizePending 0
155	private variable _rotatePending 0
156	private variable _legendPending 0
157	private variable _fieldNames {}
158	private variable _fields
159	private variable _curFldName ""
160	private variable _curFldLabel ""
161	private variable _colorMode "scalar";# Mode of colormap (vmag or scalar)
162	}
163
164	itk::usual VtkHeightmapViewer {
165	keep -background -foreground -cursor -font
166	keep -plotbackground -plotforeground -mode
167	}
168
169	# ----------------------------------------------------------------------
170	# CONSTRUCTOR
171	# ----------------------------------------------------------------------
172	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
173	set _serverType "vtkvis"
174
175	EnableWaitDialog 900
176	# Rebuild event
177	$_dispatcher register !rebuild
178	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
179
180	# Resize event
181	$_dispatcher register !resize
182	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
183
184	# Rotate event
185	$_dispatcher register !rotate
186	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
187
188	# Legend event
189	$_dispatcher register !legend
190	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
191
192	#
193	# Populate parser with commands handle incoming requests
194	#
195	$_parser alias image [itcl::code $this ReceiveImage]
196	$_parser alias dataset [itcl::code $this ReceiveDataset]
197	$_parser alias legend [itcl::code $this ReceiveLegend]
198
199	# Create image for legend colorbar.
200	set _image(legend) [image create photo]
201
202	# Initialize the view to some default parameters.
203	array set _view {
204	qw 0.36
205	qx 0.25
206	qy 0.50
207	qz 0.70
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	-axisflymode "static"
219	-axislabels 1
220	-axisminorticks 1
221	-axisvisible 1
222	-colormap BCGYR
223	-colormapdiscrete 0
224	-colormapvisible 1
225	-edges 0
226	-field "Default"
227	-heightmapscale 50
228	-isheightmap 0
229	-isolinecolor black
230	-isolinesvisible 1
231	-legendvisible 1
232	-lighting 1
233	-numisolines 10
234	-opacity 100
235	-outline 0
236	-savelighting 1
237	-saveopacity 100
238	-saveoutline 0
239	-stretchtofit 0
240	-wireframe 0
241	-xgrid 0
242	-ygrid 0
243	-zgrid 0
244	}
245	array set _changed {
246	-colormap 0
247	-numisolines 0
248	-opacity 0
249	}
250	itk_component add view {
251	canvas $itk_component(plotarea).view \
252	-highlightthickness 0 -borderwidth 0
253	} {
254	usual
255	ignore -highlightthickness -borderwidth -background
256	}
257
258	itk_component add fieldmenu {
259	menu $itk_component(plotarea).menu \
260	-relief flat \
261	-tearoff no
262	} {
263	usual
264	ignore -background -foreground -relief -tearoff
265	}
266	set c $itk_component(view)
267	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
268	bind $c <4> [itcl::code $this Zoom in 0.25]
269	bind $c <5> [itcl::code $this Zoom out 0.25]
270	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
271	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
272	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
273	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
274	bind $c <Enter> "focus %W"
275	bind $c <Control-F1> [itcl::code $this ToggleConsole]
276
277	# Fix the scrollregion in case we go off screen
278	$c configure -scrollregion [$c bbox all]
279
280	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
281	set _map(cwidth) -1
282	set _map(cheight) -1
283	set _map(zoom) 1.0
284	set _map(original) ""
285
286	set f [$itk_component(main) component controls]
287	itk_component add reset {
288	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
289	-highlightthickness 0 \
290	-image [Rappture::icon reset-view] \
291	-command [itcl::code $this CameraReset]
292	} {
293	usual
294	ignore -highlightthickness
295	}
296	pack $itk_component(reset) -side top -padx 2 -pady { 2 0 }
297	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
298
299	itk_component add zoomin {
300	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
301	-highlightthickness 0 \
302	-image [Rappture::icon zoom-in] \
303	-command [itcl::code $this Zoom in]
304	} {
305	usual
306	ignore -highlightthickness
307	}
308	pack $itk_component(zoomin) -side top -padx 2 -pady { 2 0 }
309	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
310
311	itk_component add zoomout {
312	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
313	-highlightthickness 0 \
314	-image [Rappture::icon zoom-out] \
315	-command [itcl::code $this Zoom out]
316	} {
317	usual
318	ignore -highlightthickness
319	}
320	pack $itk_component(zoomout) -side top -padx 2 -pady { 2 0 }
321	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
322
323	itk_component add mode {
324	Rappture::PushButton $f.mode \
325	-onimage [Rappture::icon surface] \
326	-offimage [Rappture::icon surface] \
327	-variable [itcl::scope _settings(-isheightmap)] \
328	-command [itcl::code $this AdjustSetting -isheightmap] \
329	}
330	Rappture::Tooltip::for $itk_component(mode) \
331	"Toggle the surface/contour on/off"
332	pack $itk_component(mode) -padx 2 -pady { 2 0 }
333
334	itk_component add stretchtofit {
335	Rappture::PushButton $f.stretchtofit \
336	-onimage [Rappture::icon stretchtofit] \
337	-offimage [Rappture::icon stretchtofit] \
338	-variable [itcl::scope _settings(-stretchtofit)] \
339	-command [itcl::code $this AdjustSetting -stretchtofit] \
340	}
341	Rappture::Tooltip::for $itk_component(stretchtofit) \
342	"Stretch plot to fit window on/off"
343	pack $itk_component(stretchtofit) -padx 2 -pady 2
344
345	if { [catch {
346	BuildContourTab
347	BuildAxisTab
348	BuildCameraTab
349	} errs] != 0 } {
350	global errorInfo
351	puts stderr "errs=$errs errorInfo=$errorInfo"
352	}
353
354	# Hack around the Tk panewindow. The problem is that the requested
355	# size of the 3d view isn't set until an image is retrieved from
356	# the server. So the panewindow uses the tiny size.
357	set w 10000
358	pack forget $itk_component(view)
359	blt::table $itk_component(plotarea) \
360	0,0 $itk_component(view) -fill both -reqwidth $w
361	blt::table configure $itk_component(plotarea) c1 -resize none
362
363	# Bindings for panning via mouse
364	bind $itk_component(view) <ButtonPress-2> \
365	[itcl::code $this Pan click %x %y]
366	bind $itk_component(view) <B2-Motion> \
367	[itcl::code $this Pan drag %x %y]
368	bind $itk_component(view) <ButtonRelease-2> \
369	[itcl::code $this Pan release %x %y]
370
371	#bind $itk_component(view) <ButtonRelease-3> \
372	# [itcl::code $this Pick %x %y]
373
374	# Bindings for panning via keyboard
375	bind $itk_component(view) <KeyPress-Left> \
376	[itcl::code $this Pan set -10 0]
377	bind $itk_component(view) <KeyPress-Right> \
378	[itcl::code $this Pan set 10 0]
379	bind $itk_component(view) <KeyPress-Up> \
380	[itcl::code $this Pan set 0 -10]
381	bind $itk_component(view) <KeyPress-Down> \
382	[itcl::code $this Pan set 0 10]
383	bind $itk_component(view) <Shift-KeyPress-Left> \
384	[itcl::code $this Pan set -2 0]
385	bind $itk_component(view) <Shift-KeyPress-Right> \
386	[itcl::code $this Pan set 2 0]
387	bind $itk_component(view) <Shift-KeyPress-Up> \
388	[itcl::code $this Pan set 0 -2]
389	bind $itk_component(view) <Shift-KeyPress-Down> \
390	[itcl::code $this Pan set 0 2]
391
392	# Bindings for zoom via keyboard
393	bind $itk_component(view) <KeyPress-Prior> \
394	[itcl::code $this Zoom out]
395	bind $itk_component(view) <KeyPress-Next> \
396	[itcl::code $this Zoom in]
397
398	bind $itk_component(view) <Enter> "focus $itk_component(view)"
399
400	if {[string equal "x11" [tk windowingsystem]]} {
401	# Bindings for zoom via mouse
402	bind $itk_component(view) <4> [itcl::code $this Zoom out]
403	bind $itk_component(view) <5> [itcl::code $this Zoom in]
404	}
405
406	set _image(download) [image create photo]
407	eval itk_initialize $args
408	Connect
409	set _beforeConnect 0
410	}
411
412	# ----------------------------------------------------------------------
413	# DESTRUCTOR
414	# ----------------------------------------------------------------------
415	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
416	Disconnect
417	image delete $_image(plot)
418	image delete $_image(download)
419	catch { blt::arcball destroy $_arcball }
420	}
421
422	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
423	if { $_width < 2 } {
424	set _width 500
425	}
426	if { $_height < 2 } {
427	set _height 500
428	}
429	set _start [clock clicks -milliseconds]
430	SendCmd "screen size [expr $_width - 20] $_height"
431
432	set font "Arial 8"
433	set lh [font metrics $font -linespace]
434	set h [expr {$_height - 2 * ($lh + 2)}]
435	if { $h != $_legendHeight } {
436	EventuallyRequestLegend
437	} else {
438	DrawLegend
439	}
440	set _resizePending 0
441	}
442
443	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
444	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
445	SendCmd "camera orient $q"
446	set _rotatePending 0
447	}
448
449	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
450	if { !$_legendPending } {
451	set _legendPending 1
452	$_dispatcher event -idle !legend
453	}
454	}
455
456	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
457	set _width $w
458	set _height $h
459	$_arcball resize $w $h
460	if { !$_resizePending } {
461	set _resizePending 1
462	$_dispatcher event -after 250 !resize
463	}
464	}
465
466	set rotate_delay 100
467
468	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
469	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
470	if { !$_rotatePending } {
471	set _rotatePending 1
472	global rotate_delay
473	$_dispatcher event -after $rotate_delay !rotate
474	}
475	}
476
477	# ----------------------------------------------------------------------
478	# USAGE: add <dataobj> ?<settings>?
479	#
480	# Clients use this to add a data object to the plot. The optional
481	# <settings> are used to configure the plot. Allowed settings are
482	# -color, -brightness, -width, -linestyle, and -raise.
483	# ----------------------------------------------------------------------
484	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
485	if { ![$dataobj isvalid] } {
486	return; # Object doesn't contain valid data.
487	}
488	array set params {
489	-color auto
490	-width 1
491	-linestyle solid
492	-brightness 0
493	-raise 0
494	-description ""
495	-param ""
496	-type ""
497	}
498	array set params $settings
499	set params(-description) ""
500	set params(-param) ""
501	array set params $settings
502
503	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
504	# can't handle -autocolors yet
505	set params(-color) white
506	}
507	set pos [lsearch -exact $_dlist $dataobj]
508	if {$pos < 0} {
509	lappend _dlist $dataobj
510	}
511	set _obj2ovride($dataobj-color) $params(-color)
512	set _obj2ovride($dataobj-width) $params(-width)
513	set _obj2ovride($dataobj-raise) $params(-raise)
514	$_dispatcher event -idle !rebuild
515	}
516
517
518	# ----------------------------------------------------------------------
519	# USAGE: delete ?<dataobj1> <dataobj2> ...?
520	#
521	# Clients use this to delete a dataobj from the plot. If no dataobjs
522	# are specified, then all dataobjs are deleted. No data objects are
523	# deleted. They are only removed from the display list.
524	#
525	# ----------------------------------------------------------------------
526	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
527	if { [llength $args] == 0} {
528	set args $_dlist
529	}
530	# Delete all specified dataobjs
531	set changed 0
532	foreach dataobj $args {
533	set pos [lsearch -exact $_dlist $dataobj]
534	if { $pos < 0 } {
535	continue; # Don't know anything about it.
536	}
537	# Remove it from the dataobj list.
538	set _dlist [lreplace $_dlist $pos $pos]
539	array unset _obj2ovride $dataobj-*
540	array unset _settings $dataobj-*
541	set changed 1
542	}
543	# If anything changed, then rebuild the plot
544	if { $changed } {
545	$_dispatcher event -idle !rebuild
546	}
547	}
548
549	# ----------------------------------------------------------------------
550	# USAGE: get ?-objects?
551	# USAGE: get ?-visible?
552	# USAGE: get ?-image view?
553	#
554	# Clients use this to query the list of objects being plotted, in
555	# order from bottom to top of this result. The optional "-image"
556	# flag can also request the internal images being shown.
557	# ----------------------------------------------------------------------
558	itcl::body Rappture::VtkHeightmapViewer::get {args} {
559	if {[llength $args] == 0} {
560	set args "-objects"
561	}
562	set op [lindex $args 0]
563	switch -- $op {
564	"-objects" {
565	# put the dataobj list in order according to -raise options
566	set dlist {}
567	foreach dataobj $_dlist {
568	if { ![IsValidObject $dataobj] } {
569	continue
570	}
571	if {[info exists _obj2ovride($dataobj-raise)] &&
572	$_obj2ovride($dataobj-raise)} {
573	set dlist [linsert $dlist 0 $dataobj]
574	} else {
575	lappend dlist $dataobj
576	}
577	}
578	return $dlist
579	}
580	"-visible" {
581	set dlist {}
582	foreach dataobj $_dlist {
583	if { ![IsValidObject $dataobj] } {
584	continue
585	}
586	if { ![info exists _obj2ovride($dataobj-raise)] } {
587	# No setting indicates that the object isn't visible.
588	continue
589	}
590	# Otherwise use the -raise parameter to put the object to
591	# the front of the list.
592	if { $_obj2ovride($dataobj-raise) } {
593	set dlist [linsert $dlist 0 $dataobj]
594	} else {
595	lappend dlist $dataobj
596	}
597	}
598	return $dlist
599	}
600	-image {
601	if {[llength $args] != 2} {
602	error "wrong # args: should be \"get -image view\""
603	}
604	switch -- [lindex $args end] {
605	view {
606	return $_image(plot)
607	}
608	default {
609	error "bad image name \"[lindex $args end]\": should be view"
610	}
611	}
612	}
613	default {
614	error "bad option \"$op\": should be -objects or -image"
615	}
616	}
617	}
618
619	#
620	# scale --
621	#
622	# This gets called either incrementally as new simulations are
623	# added or all at once as a sequence of heightmaps.
624	# This accounts for all objects--even those not showing on the
625	# screen. Because of this, the limits are appropriate for all
626	# objects as the user scans through data in the ResultSet viewer.
627	#
628	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
629	foreach dataobj $args {
630	if { ![$dataobj isvalid] } {
631	continue; # Object doesn't contain valid data.
632	}
633	foreach axis { x y } {
634	set lim [$dataobj limits $axis]
635	if { ![info exists _limits($axis)] } {
636	set _limits($axis) $lim
637	continue
638	}
639	foreach {min max} $lim break
640	foreach {amin amax} $_limits($axis) break
641	if { $amin > $min } {
642	set amin $min
643	}
644	if { $amax < $max } {
645	set amax $max
646	}
647	set _limits($axis) [list $amin $amax]
648	set units [$dataobj hints ${axis}units]
649	set found($units) 1
650	}
651	foreach { fname lim } [$dataobj fieldlimits] {
652	if { ![info exists _limits($fname)] } {
653	set _limits($fname) $lim
654	continue
655	}
656	foreach {min max} $lim break
657	foreach {fmin fmax} $_limits($fname) break
658	if { $fmin > $min } {
659	set fmin $min
660	}
661	if { $fmax < $max } {
662	set fmax $max
663	}
664	set _limits($fname) [list $fmin $fmax]
665	}
666	}
667	if { [array size found] > 1 } {
668	set _settings(-stretchtofit) 1
669	} else {
670	# Check if the range of the x and y axes requires that we stretch
671	# the contour to fit the plotting area. This can happen when the
672	# x and y scales differ greatly (> 100x)
673	foreach {xmin xmax} $_limits(x) break
674	foreach {ymin ymax} $_limits(y) break
675	if { (($xmax - $xmin) > (($ymax -$ymin) * $_maxScale)) \|\|
676	((($xmax - $xmin) * $_maxScale) < ($ymax -$ymin)) } {
677	set _settings(-stretchtofit) 1
678	}
679	}
680	}
681
682	# ----------------------------------------------------------------------
683	# USAGE: download coming
684	# USAGE: download controls <downloadCommand>
685	# USAGE: download now
686	#
687	# Clients use this method to create a downloadable representation
688	# of the plot. Returns a list of the form {ext string}, where
689	# "ext" is the file extension (indicating the type of data) and
690	# "string" is the data itself.
691	# ----------------------------------------------------------------------
692	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
693	switch $option {
694	coming {
695	if {[catch {
696	blt::winop snap $itk_component(plotarea) $_image(download)
697	}]} {
698	$_image(download) configure -width 1 -height 1
699	$_image(download) put #000000
700	}
701	}
702	controls {
703	set popup .vtkviewerdownload
704	if { ![winfo exists .vtkviewerdownload] } {
705	set inner [BuildDownloadPopup $popup [lindex $args 0]]
706	} else {
707	set inner [$popup component inner]
708	}
709	set _downloadPopup(image_controls) $inner.image_frame
710	set num [llength [get]]
711	set num [expr {($num == 1) ? "1 result" : "$num results"}]
712	set word [Rappture::filexfer::label downloadWord]
713	$inner.summary configure -text "$word $num in the following format:"
714	update idletasks ;# Fix initial sizes
715	return $popup
716	}
717	now {
718	set popup .vtkviewerdownload
719	if {[winfo exists .vtkviewerdownload]} {
720	$popup deactivate
721	}
722	switch -- $_downloadPopup(format) {
723	"image" {
724	return [$this GetImage [lindex $args 0]]
725	}
726	"vtk" {
727	return [$this GetVtkData [lindex $args 0]]
728	}
729	}
730	return ""
731	}
732	default {
733	error "bad option \"$option\": should be coming, controls, now"
734	}
735	}
736	}
737
738	# ----------------------------------------------------------------------
739	# USAGE: Connect ?<host:port>,<host:port>...?
740	#
741	# Clients use this method to establish a connection to a new
742	# server, or to reestablish a connection to the previous server.
743	# Any existing connection is automatically closed.
744	# ----------------------------------------------------------------------
745	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
746	global readyForNextFrame
747	set readyForNextFrame 1
748	set _reset 1
749	set _hosts [GetServerList "vtkvis"]
750	if { "" == $_hosts } {
751	return 0
752	}
753	set result [VisViewer::Connect $_hosts]
754	if { $result } {
755	if { $_reportClientInfo } {
756	# Tell the server the viewer, hub, user and session.
757	# Do this immediately on connect before buffering any commands
758	global env
759
760	set info {}
761	set user "???"
762	if { [info exists env(USER)] } {
763	set user $env(USER)
764	}
765	set session "???"
766	if { [info exists env(SESSION)] } {
767	set session $env(SESSION)
768	}
769	lappend info "hub" [exec hostname]
770	lappend info "client" "vtkheightmapviewer"
771	lappend info "user" $user
772	lappend info "session" $session
773	SendCmd "clientinfo [list $info]"
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::VtkHeightmapViewer::isconnected {} {
788	return [VisViewer::IsConnected]
789	}
790
791	#
792	# disconnect --
793	#
794	itcl::body Rappture::VtkHeightmapViewer::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::VtkHeightmapViewer::Disconnect {} {
806	VisViewer::Disconnect
807
808	$_dispatcher cancel !rebuild
809	$_dispatcher cancel !resize
810	$_dispatcher cancel !rotate
811	$_dispatcher cancel !legend
812	# disconnected -- no more data sitting on server
813	array unset _datasets
814	array unset _data
815	array unset _colormaps
816	array unset _obj2datasets
817	global readyForNextFrame
818	set readyForNextFrame 1
819	}
820
821	# ----------------------------------------------------------------------
822	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
823	#
824	# Invoked automatically whenever the "image" command comes in from
825	# the rendering server. Indicates that binary image data with the
826	# specified <size> will follow.
827	# ----------------------------------------------------------------------
828	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
829	global readyForNextFrame
830	set readyForNextFrame 1
831	array set info {
832	-token "???"
833	-bytes 0
834	-type image
835	}
836	array set info $args
837	set bytes [ReceiveBytes $info(-bytes)]
838	if { $info(-type) == "image" } {
839	if 0 {
840	set f [open "last.ppm" "w"]
841	puts $f $bytes
842	close $f
843	}
844	$_image(plot) configure -data $bytes
845	set time [clock seconds]
846	set date [clock format $time]
847	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
848	if { $_start > 0 } {
849	set finish [clock clicks -milliseconds]
850	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
851	set _start 0
852	}
853	} elseif { $info(type) == "print" } {
854	set tag $this-print-$info(-token)
855	set _hardcopy($tag) $bytes
856	}
857	}
858
859	#
860	# ReceiveDataset --
861	#
862	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
863	if { ![isconnected] } {
864	return
865	}
866	set option [lindex $args 0]
867	switch -- $option {
868	"scalar" {
869	set option [lindex $args 1]
870	switch -- $option {
871	"world" {
872	foreach { x y z value tag } [lrange $args 2 end] break
873	}
874	"pixel" {
875	foreach { x y value tag } [lrange $args 2 end] break
876	}
877	}
878	}
879	"vector" {
880	set option [lindex $args 1]
881	switch -- $option {
882	"world" {
883	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
884	}
885	"pixel" {
886	foreach { x y vx vy vz tag } [lrange $args 2 end] break
887	}
888	}
889	}
890	"names" {
891	foreach { name } [lindex $args 1] {
892	#puts stderr "Dataset: $name"
893	}
894	}
895	default {
896	error "unknown dataset option \"$option\" from server"
897	}
898	}
899	}
900
901	# ----------------------------------------------------------------------
902	# USAGE: Rebuild
903	#
904	# Called automatically whenever something changes that affects the
905	# data in the widget. Clears any existing data and rebuilds the
906	# widget to display new data.
907	# ----------------------------------------------------------------------
908	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
909	set w [winfo width $itk_component(view)]
910	set h [winfo height $itk_component(view)]
911	if { $w < 2 \|\| $h < 2 } {
912	$_dispatcher event -idle !rebuild
913	return
914	}
915
916	# Turn on buffering of commands to the server. We don't want to
917	# be preempted by a server disconnect/reconnect (which automatically
918	# generates a new call to Rebuild).
919	StartBufferingCommands
920
921	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
922	set _width $w
923	set _height $h
924	$_arcball resize $w $h
925	DoResize
926	if { $_settings(-stretchtofit) } {
927	AdjustSetting -stretchtofit
928	}
929	}
930	if { $_reset } {
931	#
932	# Reset the camera and other view parameters
933	#
934	InitSettings -isheightmap -background
935
936	# Let's see how this goes. I think it's preferable to overloading the
937	# axis title with the exponent.
938	SendCmd "axis exp 0 0 0 1"
939
940	SendCmd "axis lrot z 90"
941	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
942	$_arcball quaternion $q
943	if {$_settings(-isheightmap) } {
944	if { $_view(ortho)} {
945	SendCmd "camera mode ortho"
946	} else {
947	SendCmd "camera mode persp"
948	}
949	DoRotate
950	SendCmd "camera reset"
951	}
952	PanCamera
953	StopBufferingCommands
954	SendCmd "imgflush"
955	StartBufferingCommands
956	}
957
958	set _first ""
959	# Start off with no datasets are visible.
960	SendCmd "dataset visible 0"
961	set scale [GetHeightmapScale]
962	foreach dataobj [get -objects] {
963	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
964	set _first $dataobj
965	}
966	set _obj2datasets($dataobj) ""
967	foreach comp [$dataobj components] {
968	set tag $dataobj-$comp
969	if { ![info exists _datasets($tag)] } {
970	set bytes [$dataobj vtkdata $comp]
971	if 0 {
972	set f [open /tmp/vtkheightmap.vtk "w"]
973	puts $f $bytes
974	close $f
975	}
976	set length [string length $bytes]
977	if { $_reportClientInfo } {
978	set info {}
979	lappend info "tool_id" [$dataobj hints toolId]
980	lappend info "tool_name" [$dataobj hints toolName]
981	lappend info "tool_version" [$dataobj hints toolRevision]
982	lappend info "tool_title" [$dataobj hints toolTitle]
983	lappend info "dataset_label" [$dataobj hints label]
984	lappend info "dataset_size" $length
985	lappend info "dataset_tag" $tag
986	SendCmd [list "clientinfo" $info]
987	}
988	SendCmd "dataset add $tag data follows $length"
989	append _outbuf $bytes
990	set _datasets($tag) 1
991	SetObjectStyle $dataobj $comp
992	}
993	lappend _obj2datasets($dataobj) $tag
994	if { [info exists _obj2ovride($dataobj-raise)] } {
995	# Setting dataset visible enables outline
996	# and heightmap
997	SendCmd "dataset visible 1 $tag"
998	}
999	if { ![info exists _comp2scale($tag)] \|\|
1000	$_comp2scale($tag) != $scale } {
1001	SendCmd "heightmap heightscale $scale $tag"
1002	set _comp2scale($tag) $scale
1003	}
1004	}
1005	}
1006	if { $_first != "" } {
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	$itk_component(field) choices insert end "$fname" "$label"
1019	$itk_component(fieldmenu) add radiobutton -label "$label" \
1020	-value $label -variable [itcl::scope _curFldLabel] \
1021	-selectcolor red \
1022	-activebackground $itk_option(-plotbackground) \
1023	-activeforeground $itk_option(-plotforeground) \
1024	-font "Arial 8" \
1025	-command [itcl::code $this Combo invoke]
1026	set _fields($fname) [list $label $units $components]
1027	if { $_curFldName == "" } {
1028	set _curFldName $fname
1029	set _curFldLabel $label
1030	}
1031	}
1032	}
1033	$itk_component(field) value $_curFldLabel
1034	}
1035	InitSettings -stretchtofit -outline
1036
1037	if { $_reset } {
1038	SendCmd "axis tickpos outside"
1039	foreach axis { x y z } {
1040	SendCmd "axis lformat $axis %g"
1041	}
1042
1043	foreach axis { x y z } {
1044	if { $axis == "z" } {
1045	set label [$_first hints label]
1046	} else {
1047	set label [$_first hints ${axis}label]
1048	}
1049	if { $label == "" } {
1050	if {$axis == "z"} {
1051	if { [string match "component*" $_curFldName] } {
1052	set label [string toupper $axis]
1053	} else {
1054	set label $_curFldLabel
1055	}
1056	} else {
1057	set label [string toupper $axis]
1058	}
1059	}
1060	# May be a space in the axis label.
1061	SendCmd [list axis name $axis $label]
1062
1063	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1064	set units [lindex $_fields($_curFldName) 1]
1065	} else {
1066	set units [$_first hints ${axis}units]
1067	}
1068	if { $units != "" } {
1069	# May be a space in the axis units.
1070	SendCmd [list axis units $axis $units]
1071	}
1072	}
1073	#
1074	# Reset the camera and other view parameters
1075	#
1076	ResetAxes
1077	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1078	$_arcball quaternion $q
1079	if {$_settings(-isheightmap) } {
1080	if { $_view(ortho)} {
1081	SendCmd "camera mode ortho"
1082	} else {
1083	SendCmd "camera mode persp"
1084	}
1085	DoRotate
1086	SendCmd "camera reset"
1087	}
1088	PanCamera
1089	InitSettings -xgrid -ygrid -zgrid \
1090	-axisvisible -axislabels -heightmapscale -field -isheightmap \
1091	-numisolines
1092	if { [array size _fields] < 2 } {
1093	blt::table forget $itk_component(field) $itk_component(field_l)
1094	}
1095	RequestLegend
1096	set _reset 0
1097	}
1098	global readyForNextFrame
1099	set readyForNextFrame 0; # Don't advance to the next frame
1100
1101	# Actually write the commands to the server socket. If it fails, we don't
1102	# care. We're finished here.
1103	blt::busy hold $itk_component(hull)
1104	StopBufferingCommands
1105	blt::busy release $itk_component(hull)
1106	}
1107
1108	# ----------------------------------------------------------------------
1109	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1110	#
1111	# Returns a list of server IDs for the current datasets being displayed. This
1112	# is normally a single ID, but it might be a list of IDs if the current data
1113	# object has multiple components.
1114	# ----------------------------------------------------------------------
1115	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1116	set flag [lindex $args 0]
1117	switch -- $flag {
1118	"-all" {
1119	if { [llength $args] > 1 } {
1120	error "CurrentDatasets: can't specify dataobj after \"-all\""
1121	}
1122	set dlist [get -objects]
1123	}
1124	"-visible" {
1125	if { [llength $args] > 1 } {
1126	set dlist {}
1127	set args [lrange $args 1 end]
1128	foreach dataobj $args {
1129	if { [info exists _obj2ovride($dataobj-raise)] } {
1130	lappend dlist $dataobj
1131	}
1132	}
1133	} else {
1134	set dlist [get -visible]
1135	}
1136	}
1137	default {
1138	set dlist $args
1139	}
1140	}
1141	set rlist ""
1142	foreach dataobj $dlist {
1143	foreach comp [$dataobj components] {
1144	set tag $dataobj-$comp
1145	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1146	lappend rlist $tag
1147	}
1148	}
1149	}
1150	return $rlist
1151	}
1152
1153	itcl::body Rappture::VtkHeightmapViewer::CameraReset {} {
1154	array set _view {
1155	qw 0.36
1156	qx 0.25
1157	qy 0.50
1158	qz 0.70
1159	zoom 1.0
1160	xpan 0
1161	ypan 0
1162	}
1163	if { $_first != "" } {
1164	set location [$_first hints camera]
1165	if { $location != "" } {
1166	array set _view $location
1167	}
1168	}
1169	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1170	$_arcball quaternion $q
1171	if {$_settings(-isheightmap) } {
1172	DoRotate
1173	}
1174	SendCmd "camera reset"
1175	}
1176
1177	# ----------------------------------------------------------------------
1178	# USAGE: Zoom in
1179	# USAGE: Zoom out
1180	# USAGE: Zoom reset
1181	#
1182	# Called automatically when the user clicks on one of the zoom
1183	# controls for this widget. Changes the zoom for the current view.
1184	# ----------------------------------------------------------------------
1185	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1186	switch -- $option {
1187	"in" {
1188	set _view(zoom) [expr {$_view(zoom)*1.25}]
1189	SendCmd "camera zoom $_view(zoom)"
1190	}
1191	"out" {
1192	set _view(zoom) [expr {$_view(zoom)*0.8}]
1193	SendCmd "camera zoom $_view(zoom)"
1194	}
1195	"reset" {
1196	array set _view {
1197	zoom 1.0
1198	xpan 0
1199	ypan 0
1200	}
1201	SendCmd "camera reset"
1202	}
1203	}
1204	}
1205
1206	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1207	set x $_view(xpan)
1208	set y $_view(ypan)
1209	SendCmd "camera pan $x $y"
1210	}
1211
1212
1213	# ----------------------------------------------------------------------
1214	# USAGE: Rotate click <x> <y>
1215	# USAGE: Rotate drag <x> <y>
1216	# USAGE: Rotate release <x> <y>
1217	#
1218	# Called automatically when the user clicks/drags/releases in the
1219	# plot area. Moves the plot according to the user's actions.
1220	# ----------------------------------------------------------------------
1221	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1222	switch -- $option {
1223	"click" {
1224	$itk_component(view) configure -cursor fleur
1225	set _click(x) $x
1226	set _click(y) $y
1227	}
1228	"drag" {
1229	if {[array size _click] == 0} {
1230	Rotate click $x $y
1231	} else {
1232	set w [winfo width $itk_component(view)]
1233	set h [winfo height $itk_component(view)]
1234	if {$w <= 0 \|\| $h <= 0} {
1235	return
1236	}
1237
1238	if {[catch {
1239	# this fails sometimes for no apparent reason
1240	set dx [expr {double($x-$_click(x))/$w}]
1241	set dy [expr {double($y-$_click(y))/$h}]
1242	}]} {
1243	return
1244	}
1245	if { $dx == 0 && $dy == 0 } {
1246	return
1247	}
1248	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1249	EventuallyRotate $q
1250	set _click(x) $x
1251	set _click(y) $y
1252	}
1253	}
1254	"release" {
1255	Rotate drag $x $y
1256	$itk_component(view) configure -cursor ""
1257	catch {unset _click}
1258	}
1259	default {
1260	error "bad option \"$option\": should be click, drag, release"
1261	}
1262	}
1263	}
1264
1265	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1266	foreach tag [CurrentDatasets -visible] {
1267	SendCmd "dataset getscalar pixel $x $y $tag"
1268	}
1269	}
1270
1271	# ----------------------------------------------------------------------
1272	# USAGE: $this Pan click x y
1273	# $this Pan drag x y
1274	# $this Pan release x y
1275	#
1276	# Called automatically when the user clicks on one of the zoom
1277	# controls for this widget. Changes the zoom for the current view.
1278	# ----------------------------------------------------------------------
1279	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1280	switch -- $option {
1281	"set" {
1282	set w [winfo width $itk_component(view)]
1283	set h [winfo height $itk_component(view)]
1284	set x [expr $x / double($w)]
1285	set y [expr $y / double($h)]
1286	set _view(xpan) [expr $_view(xpan) + $x]
1287	set _view(ypan) [expr $_view(ypan) + $y]
1288	PanCamera
1289	return
1290	}
1291	"click" {
1292	set _click(x) $x
1293	set _click(y) $y
1294	$itk_component(view) configure -cursor hand1
1295	}
1296	"drag" {
1297	if { ![info exists _click(x)] } {
1298	set _click(x) $x
1299	}
1300	if { ![info exists _click(y)] } {
1301	set _click(y) $y
1302	}
1303	set w [winfo width $itk_component(view)]
1304	set h [winfo height $itk_component(view)]
1305	set dx [expr ($_click(x) - $x)/double($w)]
1306	set dy [expr ($_click(y) - $y)/double($h)]
1307	set _click(x) $x
1308	set _click(y) $y
1309	set _view(xpan) [expr $_view(xpan) - $dx]
1310	set _view(ypan) [expr $_view(ypan) - $dy]
1311	PanCamera
1312	}
1313	"release" {
1314	Pan drag $x $y
1315	$itk_component(view) configure -cursor ""
1316	}
1317	default {
1318	error "unknown option \"$option\": should set, click, drag, or release"
1319	}
1320	}
1321	}
1322
1323	# ----------------------------------------------------------------------
1324	# USAGE: InitSettings <what> ?<value>?
1325	#
1326	# Used internally to update rendering settings whenever parameters
1327	# change in the popup settings panel. Sends the new settings off
1328	# to the back end.
1329	# ----------------------------------------------------------------------
1330	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1331	foreach spec $args {
1332	if { [info exists _settings($_first${spec})] } {
1333	# Reset global setting with dataobj specific setting
1334	set _settings($spec) $_settings($_first${spec})
1335	}
1336	AdjustSetting $spec
1337	}
1338	}
1339
1340	#
1341	# AdjustSetting --
1342	#
1343	# Changes/updates a specific setting in the widget. There are
1344	# usually user-setable option. Commands are sent to the render
1345	# server.
1346	#
1347	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1348	if { $_beforeConnect } {
1349	return
1350	}
1351	switch -- $what {
1352	"-axisflymode" {
1353	set mode [$itk_component(axisflymode) value]
1354	set mode [$itk_component(axisflymode) translate $mode]
1355	set _settings($what) $mode
1356	SendCmd "axis flymode $mode"
1357	}
1358	"-axislabels" {
1359	set bool $_settings($what)
1360	SendCmd "axis labels all $bool"
1361	}
1362	"-axisminorticks" {
1363	set bool $_settings($what)
1364	foreach axis { x y z } {
1365	SendCmd "axis minticks ${axis} $bool"
1366	}
1367	}
1368	"-axisvisible" {
1369	set bool $_settings($what)
1370	SendCmd "axis visible all $bool"
1371	}
1372	"-xgrid" - "-ygrid" - "-zgrid" {
1373	set axis [string tolower [string range $what 1 1]]
1374	set bool $_settings($what)
1375	SendCmd "axis grid $axis $bool"
1376	}
1377	"-background" {
1378	set bg [$itk_component(background) value]
1379	array set fgcolors {
1380	"black" "white"
1381	"white" "black"
1382	"grey" "black"
1383	}
1384	set fg $fgcolors($bg)
1385	configure -plotbackground $bg -plotforeground $fg
1386	$itk_component(view) delete "legend"
1387	SendCmd "screen bgcolor [Color2RGB $bg]"
1388	SendCmd "outline color [Color2RGB $fg]"
1389	SendCmd "axis color all [Color2RGB $fg]"
1390	DrawLegend
1391	}
1392	"-colormap" {
1393	set _changed($what) 1
1394	StartBufferingCommands
1395	set color [$itk_component(colormap) value]
1396	set _settings($what) $color
1397	if { $color == "none" } {
1398	if { $_settings(-colormapvisible) } {
1399	SendCmd "heightmap surface 0"
1400	set _settings(-colormapvisible) 0
1401	}
1402	} else {
1403	if { !$_settings(-colormapvisible) } {
1404	SendCmd "heightmap surface 1"
1405	set _settings(-colormapvisible) 1
1406	}
1407	SetCurrentColormap $color
1408	if {$_settings(-colormapdiscrete)} {
1409	set numColors [expr $_settings(-numisolines) + 1]
1410	SendCmd "colormap res $numColors $color"
1411	}
1412	}
1413	StopBufferingCommands
1414	EventuallyRequestLegend
1415	}
1416	"-colormapvisible" {
1417	set bool $_settings($what)
1418	SendCmd "heightmap surface $bool"
1419	}
1420	"-colormapdiscrete" {
1421	set bool $_settings($what)
1422	set numColors [expr $_settings(-numisolines) + 1]
1423	# FIXME: don't use StartBufferingCommands
1424	StartBufferingCommands
1425	if {$bool} {
1426	SendCmd "colormap res $numColors"
1427	# Discrete colormap requires preinterp on
1428	SendCmd "heightmap preinterp on"
1429	} else {
1430	SendCmd "colormap res default"
1431	# FIXME: add setting for preinterp (default on)
1432	SendCmd "heightmap preinterp on"
1433	}
1434	StopBufferingCommands
1435	EventuallyRequestLegend
1436	}
1437	"-edges" {
1438	set bool $_settings($what)
1439	SendCmd "heightmap edges $bool"
1440	}
1441	"-field" {
1442	set label [$itk_component(field) value]
1443	set fname [$itk_component(field) translate $label]
1444	set _settings($what) $fname
1445	if { [info exists _fields($fname)] } {
1446	foreach { label units components } $_fields($fname) break
1447	if { $components > 1 } {
1448	set _colorMode vmag
1449	} else {
1450	set _colorMode scalar
1451	}
1452	set _curFldName $fname
1453	set _curFldLabel $label
1454	} else {
1455	puts stderr "unknown field \"$fname\""
1456	return
1457	}
1458	set label [$_first hints label]
1459	if { $label == "" } {
1460	if { [string match "component*" $_curFldName] } {
1461	set label Z
1462	} else {
1463	set label $_curFldLabel
1464	}
1465	}
1466	# May be a space in the axis label.
1467	SendCmd [list axis name z $label]
1468
1469	if { [$_first hints zunits] == "" } {
1470	set units [lindex $_fields($_curFldName) 1]
1471	} else {
1472	set units [$_first hints zunits]
1473	}
1474	if { $units != "" } {
1475	# May be a space in the axis units.
1476	SendCmd [list axis units z $units]
1477	}
1478	# Get the new limits because the field changed.
1479	ResetAxes
1480	SendCmd "dataset scalar $_curFldName"
1481	SendCmd "heightmap colormode scalar $_curFldName"
1482	Zoom reset
1483	UpdateContourList
1484	DrawLegend
1485	}
1486	"-heightmapscale" {
1487	if { $_settings(-isheightmap) } {
1488	set scale [GetHeightmapScale]
1489	# Have to set the datasets individually because we are
1490	# tracking them in _comp2scale.
1491	foreach dataset [CurrentDatasets -all] {
1492	SendCmd "heightmap heightscale $scale $dataset"
1493	set _comp2scale($dataset) $scale
1494	}
1495	ResetAxes
1496	}
1497	}
1498	"-isheightmap" {
1499	set bool $_settings($what)
1500	set c $itk_component(view)
1501	StartBufferingCommands
1502	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1503	if { $bool } {
1504	set _settings(-heightmapscale) 50
1505	set _settings(-opacity) $_settings(-saveopacity)
1506	set _settings(-lighting) $_settings(-savelighting)
1507	set _settings(-outline) 0
1508	} else {
1509	set _settings(-heightmapscale) 0
1510	set _settings(-lighting) 0
1511	set _settings(-opacity) 100
1512	set _settings(-outline) $_settings(-saveoutline)
1513	}
1514	InitSettings -lighting -opacity -outline
1515	set scale [GetHeightmapScale]
1516	# Have to set the datasets individually because we are
1517	# tracking them in _comp2scale.
1518	foreach dataset [CurrentDatasets -all] {
1519	SendCmd "heightmap heightscale $scale $dataset"
1520	set _comp2scale($dataset) $scale
1521	}
1522	if { $bool } {
1523	$itk_component(lighting) configure -state normal
1524	$itk_component(opacity) configure -state normal
1525	$itk_component(scale) configure -state normal
1526	$itk_component(opacity_l) configure -state normal
1527	$itk_component(scale_l) configure -state normal
1528	$itk_component(outline) configure -state disabled
1529	if {$_view(ortho)} {
1530	SendCmd "camera mode ortho"
1531	} else {
1532	SendCmd "camera mode persp"
1533	}
1534	} else {
1535	$itk_component(lighting) configure -state disabled
1536	$itk_component(opacity) configure -state disabled
1537	$itk_component(scale) configure -state disabled
1538	$itk_component(opacity_l) configure -state disabled
1539	$itk_component(scale_l) configure -state disabled
1540	$itk_component(outline) configure -state normal
1541	SendCmd "camera mode image"
1542	}
1543	if {$_settings(-stretchtofit)} {
1544	if {$scale == 0} {
1545	SendCmd "camera aspect window"
1546	} else {
1547	SendCmd "camera aspect square"
1548	}
1549	}
1550	ResetAxes
1551	if { $bool } {
1552	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1553	$_arcball quaternion $q
1554	SendCmd "camera orient $q"
1555	} else {
1556	bind $c <ButtonPress-1> {}
1557	bind $c <B1-Motion> {}
1558	bind $c <ButtonRelease-1> {}
1559	}
1560	Zoom reset
1561	# Fix the mouse bindings for rotation/panning and the
1562	# camera mode. Ideally we'd create a bindtag for these.
1563	if { $bool } {
1564	# Bindings for rotation via mouse
1565	bind $c <ButtonPress-1> \
1566	[itcl::code $this Rotate click %x %y]
1567	bind $c <B1-Motion> \
1568	[itcl::code $this Rotate drag %x %y]
1569	bind $c <ButtonRelease-1> \
1570	[itcl::code $this Rotate release %x %y]
1571	}
1572	StopBufferingCommands
1573	}
1574	"-isolinecolor" {
1575	set color [$itk_component(isolinecolor) value]
1576	if { $color == "none" } {
1577	if { $_settings(-isolinesvisible) } {
1578	SendCmd "heightmap isolines 0"
1579	set _settings(-isolinesvisible) 0
1580	}
1581	} else {
1582	if { !$_settings(-isolinesvisible) } {
1583	SendCmd "heightmap isolines 1"
1584	set _settings(-isolinesvisible) 1
1585	}
1586	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1587	}
1588	DrawLegend
1589	}
1590	"-isolinesvisible" {
1591	set bool $_settings($what)
1592	SendCmd "heightmap isolines $bool"
1593	DrawLegend
1594	}
1595	"-legendvisible" {
1596	if { !$_settings($what) } {
1597	$itk_component(view) delete legend
1598	}
1599	DrawLegend
1600	}
1601	"-lighting" {
1602	if { $_settings(-isheightmap) } {
1603	set _settings(-savelighting) $_settings($what)
1604	set bool $_settings($what)
1605	SendCmd "heightmap lighting $bool"
1606	} else {
1607	SendCmd "heightmap lighting 0"
1608	}
1609	}
1610	"-numisolines" {
1611	set _settings($what) [$itk_component(numisolines) value]
1612	set _currentNumIsolines $_settings($what)
1613	UpdateContourList
1614	set _changed($what) 1
1615	SendCmd "heightmap contourlist [list $_contourList]"
1616	if {$_settings(-colormapdiscrete)} {
1617	set numColors [expr $_settings($what) + 1]
1618	SendCmd "colormap res $numColors"
1619	EventuallyRequestLegend
1620	} else {
1621	DrawLegend
1622	}
1623	}
1624	"-opacity" {
1625	set _changed($what) 1
1626	set val [expr $_settings($what) * 0.01]
1627	if { $_settings(-isheightmap) } {
1628	set _settings(-saveopacity) $_settings($what)
1629	SendCmd "heightmap opacity $val"
1630	} else {
1631	SendCmd "heightmap opacity 1.0"
1632	}
1633	}
1634	"-outline" {
1635	if { $_settings(-isheightmap) } {
1636	SendCmd "outline visible 0"
1637	} else {
1638	set _settings(-saveoutline) $_settings($what)
1639	set bool $_settings($what)
1640	SendCmd "outline visible $bool"
1641	}
1642	}
1643	"-stretchtofit" {
1644	set bool $_settings($what)
1645	if { $bool } {
1646	set heightScale [GetHeightmapScale]
1647	if {$heightScale == 0} {
1648	SendCmd "camera aspect window"
1649	} else {
1650	SendCmd "camera aspect square"
1651	}
1652	} else {
1653	SendCmd "camera aspect native"
1654	}
1655	Zoom reset
1656	}
1657	"-wireframe" {
1658	set bool $_settings($what)
1659	SendCmd "heightmap wireframe $bool"
1660	}
1661	default {
1662	error "don't know how to fix $what"
1663	}
1664	}
1665	}
1666
1667	#
1668	# RequestLegend --
1669	#
1670	# Request a new legend from the server. The size of the legend
1671	# is determined from the height of the canvas.
1672	#
1673	# This should be called when
1674	# 1. A new current colormap is set.
1675	# 2. Window is resized.
1676	# 3. The limits of the data have changed. (Just need a redraw).
1677	# 4. Number of isolines have changed. (Just need a redraw).
1678	# 5. Legend becomes visible (Just need a redraw).
1679	#
1680	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1681	set _legendPending 0
1682	set font "Arial 8"
1683	set w 12
1684	set lineht [font metrics $font -linespace]
1685	# color ramp height = (canvas height) - (min and max value lines) - 2
1686	set h [expr {$_height - 2 * ($lineht + 2)}]
1687	set _legendHeight $h
1688
1689	set fname $_curFldName
1690	if { [string match "component*" $fname] } {
1691	set title ""
1692	} else {
1693	if { [info exists _fields($fname)] } {
1694	foreach { title units } $_fields($fname) break
1695	if { $units != "" } {
1696	set title [format "%s (%s)" $title $units]
1697	}
1698	} else {
1699	set title $fname
1700	}
1701	}
1702	# If there's a title too, substract one more line
1703	if { $title != "" } {
1704	incr h -$lineht
1705	}
1706	if { $h < 1 } {
1707	return
1708	}
1709	# Set the legend on the first heightmap dataset.
1710	if { $_currentColormap != "" } {
1711	set cmap $_currentColormap
1712	SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1713	}
1714	}
1715
1716	#
1717	# ResetAxes --
1718	#
1719	# Set axis z bounds and range
1720	#
1721	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1722	if { ![info exists _limits($_curFldName)]} {
1723	SendCmd "dataset maprange all"
1724	SendCmd "axis autorange z on"
1725	SendCmd "axis autobounds z on"
1726	return
1727	}
1728	foreach { xmin xmax } $_limits(x) break
1729	foreach { ymin ymax } $_limits(y) break
1730	foreach { vmin vmax } $_limits($_curFldName) break
1731
1732	global tcl_precision
1733	set tcl_precision 17
1734	set xr [expr $xmax - $xmin]
1735	set yr [expr $ymax - $ymin]
1736	set vr [expr $vmax - $vmin]
1737	set r [expr ($yr > $xr) ? $yr : $xr]
1738	if { $vr < 1.0e-17 } {
1739	set dataScale 1.0
1740	} else {
1741	set dataScale [expr $r / $vr]
1742	}
1743	set heightScale [GetHeightmapScale]
1744	set bmin [expr $heightScale * $dataScale * $vmin]
1745	set bmax [expr $heightScale * $dataScale * $vmax]
1746	if {$heightScale > 0} {
1747	set zpos [expr - $bmin]
1748	SendCmd "heightmap pos 0 0 $zpos"
1749	} else {
1750	SendCmd "heightmap pos 0 0 0"
1751	}
1752	set bmax [expr $bmax - $bmin]
1753	set bmin 0
1754	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1755	SendCmd "axis bounds z $bmin $bmax"
1756	SendCmd "axis range z $_limits($_curFldName)"
1757	}
1758
1759	#
1760	# SetCurrentColormap --
1761	#
1762	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1763	# Keep track of the colormaps that we build.
1764	if { $name != "none" && ![info exists _colormaps($name)] } {
1765	BuildColormap $name
1766	set _colormaps($name) 1
1767	}
1768	set _currentColormap $name
1769	SendCmd "heightmap colormap $_currentColormap"
1770	}
1771
1772
1773	#
1774	# BuildColormap --
1775	#
1776	# Build the designated colormap on the server.
1777	#
1778	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1779	set cmap [ColorsToColormap $name]
1780	if { [llength $cmap] == 0 } {
1781	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1782	}
1783	set wmap "0.0 1.0 1.0 1.0"
1784	SendCmd "colormap add $name { $cmap } { $wmap }"
1785	}
1786
1787	# ----------------------------------------------------------------------
1788	# CONFIGURATION OPTION: -mode
1789	# ----------------------------------------------------------------------
1790	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1791	switch -- $itk_option(-mode) {
1792	"heightmap" {
1793	set _settings(-isheightmap) 1
1794	}
1795	"contour" {
1796	set _settings(-isheightmap) 0
1797	}
1798	default {
1799	error "unknown mode settings \"$itk_option(-mode)\""
1800	}
1801	}
1802	if { !$_reset } {
1803	AdjustSetting -isheightmap
1804	}
1805	}
1806
1807	# ----------------------------------------------------------------------
1808	# CONFIGURATION OPTION: -plotbackground
1809	# ----------------------------------------------------------------------
1810	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1811	if { [isconnected] } {
1812	set rgb [Color2RGB $itk_option(-plotbackground)]
1813	if { !$_reset } {
1814	SendCmd "screen bgcolor $rgb"
1815	}
1816	$itk_component(view) configure -background $itk_option(-plotbackground)
1817	}
1818	}
1819
1820	# ----------------------------------------------------------------------
1821	# CONFIGURATION OPTION: -plotforeground
1822	# ----------------------------------------------------------------------
1823	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1824	if { [isconnected] } {
1825	set rgb [Color2RGB $itk_option(-plotforeground)]
1826	if { !$_reset } {
1827	SendCmd "outline color $rgb"
1828	SendCmd "axis color all $rgb"
1829	}
1830	}
1831	}
1832
1833	itcl::body Rappture::VtkHeightmapViewer::limits3 { dataobj } {
1834	lappend limits x [$dataobj limits x]
1835	lappend limits y [$dataobj limits y]
1836	if { [catch { $dataobj limits $_curFldName } vlim] != 0 } {
1837	set vlim [$dataobj limits v]
1838	}
1839	lappend limits v $vlim
1840	return $limits
1841	}
1842
1843	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1844
1845	set fg [option get $itk_component(hull) font Font]
1846	#set bfg [option get $itk_component(hull) boldFont Font]
1847
1848	set inner [$itk_component(main) insert end \
1849	-title "Contour/Surface Settings" \
1850	-icon [Rappture::icon contour2]]
1851	$inner configure -borderwidth 4
1852
1853	checkbutton $inner.legend \
1854	-text "Legend" \
1855	-variable [itcl::scope _settings(-legendvisible)] \
1856	-command [itcl::code $this AdjustSetting -legendvisible] \
1857	-font "Arial 9"
1858
1859	checkbutton $inner.wireframe \
1860	-text "Wireframe" \
1861	-variable [itcl::scope _settings(-wireframe)] \
1862	-command [itcl::code $this AdjustSetting -wireframe] \
1863	-font "Arial 9"
1864
1865	itk_component add lighting {
1866	checkbutton $inner.lighting \
1867	-text "Enable Lighting" \
1868	-variable [itcl::scope _settings(-lighting)] \
1869	-command [itcl::code $this AdjustSetting -lighting] \
1870	-font "Arial 9"
1871	} {
1872	ignore -font
1873	}
1874	checkbutton $inner.edges \
1875	-text "Edges" \
1876	-variable [itcl::scope _settings(-edges)] \
1877	-command [itcl::code $this AdjustSetting -edges] \
1878	-font "Arial 9"
1879
1880	itk_component add outline {
1881	checkbutton $inner.outline \
1882	-text "Outline" \
1883	-variable [itcl::scope _settings(-outline)] \
1884	-command [itcl::code $this AdjustSetting -outline] \
1885	-font "Arial 9"
1886	} {
1887	ignore -font
1888	}
1889	checkbutton $inner.stretch \
1890	-text "Stretch to fit" \
1891	-variable [itcl::scope _settings(-stretchtofit)] \
1892	-command [itcl::code $this AdjustSetting -stretchtofit] \
1893	-font "Arial 9"
1894
1895	checkbutton $inner.isolines \
1896	-text "Isolines" \
1897	-variable [itcl::scope _settings(-isolinesvisible)] \
1898	-command [itcl::code $this AdjustSetting -isolinesvisible] \
1899	-font "Arial 9"
1900
1901	checkbutton $inner.colormapDiscrete \
1902	-text "Discrete Colormap" \
1903	-variable [itcl::scope _settings(-colormapdiscrete)] \
1904	-command [itcl::code $this AdjustSetting -colormapdiscrete] \
1905	-font "Arial 9"
1906
1907	itk_component add field_l {
1908	label $inner.field_l -text "Field" -font "Arial 9"
1909	} {
1910	ignore -font
1911	}
1912	itk_component add field {
1913	Rappture::Combobox $inner.field -width 10 -editable no
1914	}
1915	bind $inner.field <<Value>> \
1916	[itcl::code $this AdjustSetting -field]
1917
1918	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1919	itk_component add colormap {
1920	Rappture::Combobox $inner.colormap -width 10 -editable no
1921	}
1922	$inner.colormap choices insert end \
1923	"BCGYR" "BCGYR" \
1924	"BGYOR" "BGYOR" \
1925	"blue" "blue" \
1926	"blue-to-brown" "blue-to-brown" \
1927	"blue-to-orange" "blue-to-orange" \
1928	"blue-to-grey" "blue-to-grey" \
1929	"green-to-magenta" "green-to-magenta" \
1930	"greyscale" "greyscale" \
1931	"nanohub" "nanohub" \
1932	"rainbow" "rainbow" \
1933	"spectral" "spectral" \
1934	"ROYGB" "ROYGB" \
1935	"RYGCB" "RYGCB" \
1936	"brown-to-blue" "brown-to-blue" \
1937	"grey-to-blue" "grey-to-blue" \
1938	"orange-to-blue" "orange-to-blue" \
1939	"none" "none"
1940
1941	$itk_component(colormap) value $_settings(-colormap)
1942	bind $inner.colormap <<Value>> \
1943	[itcl::code $this AdjustSetting -colormap]
1944
1945	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1946	itk_component add isolinecolor {
1947	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1948	}
1949	$inner.isolinecolor choices insert end \
1950	"black" "black" \
1951	"blue" "blue" \
1952	"cyan" "cyan" \
1953	"green" "green" \
1954	"grey" "grey" \
1955	"magenta" "magenta" \
1956	"orange" "orange" \
1957	"red" "red" \
1958	"white" "white" \
1959	"none" "none"
1960
1961	$itk_component(isolinecolor) value $_settings(-isolinecolor)
1962	bind $inner.isolinecolor <<Value>> \
1963	[itcl::code $this AdjustSetting -isolinecolor]
1964
1965	label $inner.background_l -text "Background Color" -font "Arial 9"
1966	itk_component add background {
1967	Rappture::Combobox $inner.background -width 10 -editable no
1968	}
1969	$inner.background choices insert end \
1970	"black" "black" \
1971	"white" "white" \
1972	"grey" "grey"
1973
1974	$itk_component(background) value "white"
1975	bind $inner.background <<Value>> \
1976	[itcl::code $this AdjustSetting -background]
1977
1978	itk_component add opacity_l {
1979	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1980	} {
1981	ignore -font
1982	}
1983	itk_component add opacity {
1984	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1985	-variable [itcl::scope _settings(-opacity)] \
1986	-showvalue off \
1987	-command [itcl::code $this AdjustSetting -opacity]
1988	}
1989	itk_component add scale_l {
1990	label $inner.scale_l -text "Scale" -font "Arial 9"
1991	} {
1992	ignore -font
1993	}
1994	itk_component add scale {
1995	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1996	-variable [itcl::scope _settings(-heightmapscale)] \
1997	-showvalue off \
1998	-command [itcl::code $this AdjustSetting -heightmapscale]
1999	}
2000	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
2001	itk_component add numisolines {
2002	Rappture::Spinint $inner.numisolines \
2003	-min 0 -max 50 -font "arial 9"
2004	}
2005	$itk_component(numisolines) value $_settings(-numisolines)
2006	bind $itk_component(numisolines) <<Value>> \
2007	[itcl::code $this AdjustSetting -numisolines]
2008
2009	frame $inner.separator1 -height 2 -relief sunken -bd 1
2010	frame $inner.separator2 -height 2 -relief sunken -bd 1
2011
2012	blt::table $inner \
2013	0,0 $inner.field_l -anchor w -pady 2 \
2014	0,1 $inner.field -anchor w -pady 2 -fill x \
2015	1,0 $inner.colormap_l -anchor w -pady 2 \
2016	1,1 $inner.colormap -anchor w -pady 2 -fill x \
2017	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
2018	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
2019	3,0 $inner.background_l -anchor w -pady 2 \
2020	3,1 $inner.background -anchor w -pady 2 -fill x \
2021	4,0 $inner.numisolines_l -anchor w -pady 2 \
2022	4,1 $inner.numisolines -anchor w -pady 2 \
2023	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
2024	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
2025	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
2026	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
2027	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
2028	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
2029	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
2030	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
2031	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
2032	14,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
2033	15,0 $inner.opacity_l -anchor w -pady 2 \
2034	15,1 $inner.opacity -fill x -pady 2 \
2035	16,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
2036	16,1 $inner.scale -fill x -pady 2 -cspan 2 \
2037
2038	blt::table configure $inner r* c* -resize none
2039	blt::table configure $inner r17 c1 -resize expand
2040	}
2041
2042	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
2043
2044	set fg [option get $itk_component(hull) font Font]
2045	#set bfg [option get $itk_component(hull) boldFont Font]
2046
2047	set inner [$itk_component(main) insert end \
2048	-title "Axis Settings" \
2049	-icon [Rappture::icon axis2]]
2050	$inner configure -borderwidth 4
2051
2052	checkbutton $inner.visible \
2053	-text "Axes" \
2054	-variable [itcl::scope _settings(-axisvisible)] \
2055	-command [itcl::code $this AdjustSetting -axisvisible] \
2056	-font "Arial 9"
2057	checkbutton $inner.labels \
2058	-text "Axis Labels" \
2059	-variable [itcl::scope _settings(-axislabels)] \
2060	-command [itcl::code $this AdjustSetting -axislabels] \
2061	-font "Arial 9"
2062	label $inner.grid_l -text "Grid" -font "Arial 9"
2063	checkbutton $inner.xgrid \
2064	-text "X" \
2065	-variable [itcl::scope _settings(-xgrid)] \
2066	-command [itcl::code $this AdjustSetting -xgrid] \
2067	-font "Arial 9"
2068	checkbutton $inner.ygrid \
2069	-text "Y" \
2070	-variable [itcl::scope _settings(-ygrid)] \
2071	-command [itcl::code $this AdjustSetting -ygrid] \
2072	-font "Arial 9"
2073	checkbutton $inner.zgrid \
2074	-text "Z" \
2075	-variable [itcl::scope _settings(-zgrid)] \
2076	-command [itcl::code $this AdjustSetting -zgrid] \
2077	-font "Arial 9"
2078	checkbutton $inner.minorticks \
2079	-text "Minor Ticks" \
2080	-variable [itcl::scope _settings(-axisminorticks)] \
2081	-command [itcl::code $this AdjustSetting -axisminorticks] \
2082	-font "Arial 9"
2083
2084
2085	label $inner.mode_l -text "Mode" -font "Arial 9"
2086
2087	itk_component add axisflymode {
2088	Rappture::Combobox $inner.mode -width 10 -editable no
2089	}
2090	$inner.mode choices insert end \
2091	"static_triad" "static" \
2092	"closest_triad" "closest" \
2093	"furthest_triad" "farthest" \
2094	"outer_edges" "outer"
2095	$itk_component(axisflymode) value $_settings(-axisflymode)
2096	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
2097
2098	blt::table $inner \
2099	0,0 $inner.visible -anchor w -cspan 4 \
2100	1,0 $inner.labels -anchor w -cspan 4 \
2101	2,0 $inner.minorticks -anchor w -cspan 4 \
2102	4,0 $inner.grid_l -anchor w \
2103	4,1 $inner.xgrid -anchor w \
2104	4,2 $inner.ygrid -anchor w \
2105	4,3 $inner.zgrid -anchor w \
2106	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2107	5,1 $inner.mode -fill x -cspan 3
2108
2109	blt::table configure $inner r* c* -resize none
2110	blt::table configure $inner r7 c6 -resize expand
2111	blt::table configure $inner r3 -height 0.125i
2112	}
2113
2114
2115	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2116	set inner [$itk_component(main) insert end \
2117	-title "Camera Settings" \
2118	-icon [Rappture::icon camera]]
2119	$inner configure -borderwidth 4
2120
2121	label $inner.view_l -text "view" -font "Arial 9"
2122	set f [frame $inner.view]
2123	foreach side { front back left right top bottom } {
2124	button $f.$side -image [Rappture::icon view$side] \
2125	-command [itcl::code $this SetOrientation $side]
2126	Rappture::Tooltip::for $f.$side "Change the view to $side"
2127	pack $f.$side -side left
2128	}
2129
2130	blt::table $inner \
2131	0,0 $inner.view_l -anchor e -pady 2 \
2132	0,1 $inner.view -anchor w -pady 2
2133
2134	set labels { qx qy qz qw xpan ypan zoom }
2135	set row 1
2136	foreach tag $labels {
2137	label $inner.${tag}label -text $tag -font "Arial 9"
2138	entry $inner.${tag} -font "Arial 9" -bg white \
2139	-textvariable [itcl::scope _view($tag)]
2140	bind $inner.${tag} <Return> \
2141	[itcl::code $this camera set ${tag}]
2142	bind $inner.${tag} <KP_Enter> \
2143	[itcl::code $this camera set ${tag}]
2144	blt::table $inner \
2145	$row,0 $inner.${tag}label -anchor e -pady 2 \
2146	$row,1 $inner.${tag} -anchor w -pady 2
2147	blt::table configure $inner r$row -resize none
2148	incr row
2149	}
2150	checkbutton $inner.ortho \
2151	-text "Orthographic Projection" \
2152	-variable [itcl::scope _view(ortho)] \
2153	-command [itcl::code $this camera set ortho] \
2154	-font "Arial 9"
2155	blt::table $inner \
2156	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2157	blt::table configure $inner r$row -resize none
2158	incr row
2159
2160	blt::table configure $inner c* r* -resize none
2161	blt::table configure $inner c2 -resize expand
2162	blt::table configure $inner r$row -resize expand
2163	}
2164
2165	#
2166	# camera --
2167	#
2168	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2169	switch -- $option {
2170	"show" {
2171	puts [array get _view]
2172	}
2173	"set" {
2174	set who [lindex $args 0]
2175	set x $_view($who)
2176	set code [catch { string is double $x } result]
2177	if { $code != 0 \|\| !$result } {
2178	return
2179	}
2180	switch -- $who {
2181	"ortho" {
2182	if {$_view(ortho)} {
2183	SendCmd "camera mode ortho"
2184	} else {
2185	SendCmd "camera mode persp"
2186	}
2187	}
2188	"xpan" - "ypan" {
2189	PanCamera
2190	}
2191	"qx" - "qy" - "qz" - "qw" {
2192	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2193	$_arcball quaternion $q
2194	EventuallyRotate $q
2195	}
2196	"zoom" {
2197	SendCmd "camera zoom $_view(zoom)"
2198	}
2199	}
2200	}
2201	}
2202	}
2203
2204	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2205	set bytes ""
2206	foreach dataobj [get] {
2207	foreach comp [$dataobj components] {
2208	set tag $dataobj-$comp
2209	set contents [$dataobj vtkdata $comp]
2210	append bytes "$contents\n"
2211	}
2212	}
2213	return [list .vtk $bytes]
2214	}
2215
2216	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2217	if { [image width $_image(download)] > 0 &&
2218	[image height $_image(download)] > 0 } {
2219	set bytes [$_image(download) data -format "jpeg -quality 100"]
2220	set bytes [Rappture::encoding::decode -as b64 $bytes]
2221	return [list .jpg $bytes]
2222	}
2223	return ""
2224	}
2225
2226	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2227	Rappture::Balloon $popup \
2228	-title "[Rappture::filexfer::label downloadWord] as..."
2229	set inner [$popup component inner]
2230	label $inner.summary -text "" -anchor w
2231	radiobutton $inner.vtk_button -text "VTK data file" \
2232	-variable [itcl::scope _downloadPopup(format)] \
2233	-font "Arial 9 " \
2234	-value vtk
2235	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2236	radiobutton $inner.image_button -text "Image File" \
2237	-variable [itcl::scope _downloadPopup(format)] \
2238	-font "Arial 9 " \
2239	-value image
2240	Rappture::Tooltip::for $inner.image_button \
2241	"Save as digital image."
2242
2243	button $inner.ok -text "Save" \
2244	-highlightthickness 0 -pady 2 -padx 3 \
2245	-command $command \
2246	-compound left \
2247	-image [Rappture::icon download]
2248
2249	button $inner.cancel -text "Cancel" \
2250	-highlightthickness 0 -pady 2 -padx 3 \
2251	-command [list $popup deactivate] \
2252	-compound left \
2253	-image [Rappture::icon cancel]
2254
2255	blt::table $inner \
2256	0,0 $inner.summary -cspan 2 \
2257	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2258	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2259	4,1 $inner.cancel -width .9i -fill y \
2260	4,0 $inner.ok -padx 2 -width .9i -fill y
2261	blt::table configure $inner r3 -height 4
2262	blt::table configure $inner r4 -pady 4
2263	raise $inner.image_button
2264	$inner.vtk_button invoke
2265	return $inner
2266	}
2267
2268	#
2269	# SetObjectStyle --
2270	#
2271	# Set the style of the heightmap/contour object. This gets calls
2272	# for each dataset once as it is loaded. It can overridden by
2273	# the user controls.
2274	#
2275	#
2276	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2277	# Parse style string.
2278	set tag $dataobj-$comp
2279	array set style {
2280	-color BCGYR
2281	-levels 10
2282	-opacity 1.0
2283	}
2284	set stylelist [$dataobj style $comp]
2285	if { $stylelist != "" } {
2286	array set style $stylelist
2287	}
2288	# This is too complicated. We want to set the colormap, number of
2289	# isolines and opacity for the dataset. They can be the default values,
2290	# the style hints loaded with the dataset, or set by user controls. As
2291	# datasets get loaded, they first use the defaults that are overidden
2292	# by the style hints. If the user changes the global controls, then that
2293	# overrides everything else. I don't know what it means when global
2294	# controls are specified as style hints by each dataset. It complicates
2295	# the code to handle aberrant cases.
2296
2297	if { $_changed(-opacity) } {
2298	set style(-opacity) [expr $_settings(-opacity) * 0.01]
2299	}
2300	if { $_changed(-numisolines) } {
2301	set style(-levels) $_settings(-numisolines)
2302	}
2303	if { $_changed(-colormap) } {
2304	set style(-color) $_settings(-colormap)
2305	}
2306	if { $_currentColormap == "" } {
2307	$itk_component(colormap) value $style(-color)
2308	}
2309	if { [info exists style(-stretchtofit)] } {
2310	set _settings(-stretchtofit) $style(-stretchtofit)
2311	AdjustSetting -stretchtofit
2312	}
2313
2314	if { $_currentNumIsolines != $style(-levels) } {
2315	set _currentNumIsolines $style(-levels)
2316	set _settings(-numisolines) $_currentNumIsolines
2317	$itk_component(numisolines) value $_currentNumIsolines
2318	UpdateContourList
2319	DrawLegend
2320	}
2321	SendCmd "outline add $tag"
2322	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2323	SendCmd "outline visible $_settings(-outline) $tag"
2324	set scale [GetHeightmapScale]
2325	SendCmd "[list heightmap add contourlist $_contourList $scale $tag]"
2326	set _comp2scale($tag) $_settings(-heightmapscale)
2327	SendCmd "heightmap edges $_settings(-edges) $tag"
2328	SendCmd "heightmap wireframe $_settings(-wireframe) $tag"
2329	SetCurrentColormap $style(-color)
2330	set color [$itk_component(isolinecolor) value]
2331	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2332	SendCmd "heightmap lighting $_settings(-isheightmap) $tag"
2333	SendCmd "heightmap isolines $_settings(-isolinesvisible) $tag"
2334	SendCmd "heightmap surface $_settings(-colormapvisible) $tag"
2335	SendCmd "heightmap opacity $style(-opacity) $tag"
2336	set _settings(-opacity) [expr $style(-opacity) * 100.0]
2337	}
2338
2339	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2340	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2341	return 0
2342	}
2343	return 1
2344	}
2345
2346	# ----------------------------------------------------------------------
2347	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2348	#
2349	# Invoked automatically whenever the "legend" command comes in from
2350	# the rendering server. Indicates that binary image data with the
2351	# specified <size> will follow.
2352	# ----------------------------------------------------------------------
2353	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2354	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2355	if { [isconnected] } {
2356	set bytes [ReceiveBytes $size]
2357	if { ![info exists _image(legend)] } {
2358	set _image(legend) [image create photo]
2359	}
2360	$_image(legend) configure -data $bytes
2361	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2362	if { [catch {DrawLegend} errs] != 0 } {
2363	global errorInfo
2364	puts stderr "errs=$errs errorInfo=$errorInfo"
2365	}
2366	}
2367	}
2368
2369	#
2370	# DrawLegend --
2371	#
2372	# Draws the legend in the own canvas on the right side of the plot area.
2373	#
2374	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2375	set fname $_curFldName
2376	set c $itk_component(view)
2377	set w [winfo width $c]
2378	set h [winfo height $c]
2379	set font "Arial 8"
2380	set lineht [font metrics $font -linespace]
2381
2382	if { [string match "component*" $fname] } {
2383	set title ""
2384	} else {
2385	if { [info exists _fields($fname)] } {
2386	foreach { title units } $_fields($fname) break
2387	if { $units != "" } {
2388	set title [format "%s (%s)" $title $units]
2389	}
2390	} else {
2391	set title $fname
2392	}
2393	}
2394	set x [expr $w - 2]
2395	if { !$_settings(-legendvisible) } {
2396	$c delete legend
2397	return
2398	}
2399	if { [$c find withtag "legend"] == "" } {
2400	set y 2
2401	# If there's a legend title, create a text item for the title.
2402	$c create text $x $y \
2403	-anchor ne \
2404	-fill $itk_option(-plotforeground) -tags "title legend" \
2405	-font $font
2406	if { $title != "" } {
2407	incr y $lineht
2408	}
2409	$c create text $x $y \
2410	-anchor ne \
2411	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2412	-font $font
2413	incr y $lineht
2414	$c create image $x $y \
2415	-anchor ne \
2416	-image $_image(legend) -tags "colormap legend"
2417	$c create rectangle $x $y 1 1 \
2418	-fill "" -outline "" -tags "sensor legend"
2419	$c create text $x [expr {$h-2}] \
2420	-anchor se \
2421	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2422	-font $font
2423	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2424	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2425	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2426	}
2427	$c delete isoline
2428	set x2 $x
2429	set iw [image width $_image(legend)]
2430	set ih [image height $_image(legend)]
2431	set x1 [expr $x2 - ($iw*12)/10]
2432	set color [$itk_component(isolinecolor) value]
2433
2434	# Draw the isolines on the legend.
2435	array unset _isolines
2436	if { $color != "none" && [info exists _limits($_curFldName)] &&
2437	$_settings(-isolinesvisible) && $_currentNumIsolines > 0 } {
2438
2439	foreach { vmin vmax } $_limits($_curFldName) break
2440	set range [expr double($vmax - $vmin)]
2441	if { $range <= 0.0 } {
2442	set range 1.0; # Min is greater or equal to max.
2443	}
2444	set tags "isoline legend"
2445	set offset [expr 2 + $lineht]
2446	if { $title != "" } {
2447	incr offset $lineht
2448	}
2449	foreach value $_contourList {
2450	set norm [expr 1.0 - (($value - $vmin) / $range)]
2451	set y1 [expr int(round(($norm * $ih) + $offset))]
2452	for { set off 0 } { $off < 3 } { incr off } {
2453	set _isolines([expr $y1 + $off]) $value
2454	set _isolines([expr $y1 - $off]) $value
2455	}
2456	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2457	}
2458	}
2459
2460	$c bind title <ButtonPress> [itcl::code $this Combo post]
2461	$c bind title <Enter> [itcl::code $this Combo activate]
2462	$c bind title <Leave> [itcl::code $this Combo deactivate]
2463	# Reset the item coordinates according the current size of the plot.
2464	if { [info exists _limits($_curFldName)] } {
2465	foreach { vmin vmax } $_limits($_curFldName) break
2466	$c itemconfigure vmin -text [format %g $vmin]
2467	$c itemconfigure vmax -text [format %g $vmax]
2468	}
2469	set y 2
2470	# If there's a legend title, move the title to the correct position
2471	if { $title != "" } {
2472	$c itemconfigure title -text $title
2473	$c coords title $x $y
2474	incr y $lineht
2475	}
2476	$c coords vmax $x $y
2477	incr y $lineht
2478	$c coords colormap $x $y
2479	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2480	$c raise sensor
2481	$c coords vmin $x [expr {$h - 2}]
2482	}
2483
2484	#
2485	# EnterLegend --
2486	#
2487	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2488	SetLegendTip $x $y
2489	}
2490
2491	#
2492	# MotionLegend --
2493	#
2494	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2495	Rappture::Tooltip::tooltip cancel
2496	set c $itk_component(view)
2497	set cw [winfo width $c]
2498	set ch [winfo height $c]
2499	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2500	SetLegendTip $x $y
2501	}
2502	}
2503
2504	#
2505	# LeaveLegend --
2506	#
2507	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2508	Rappture::Tooltip::tooltip cancel
2509	.rappturetooltip configure -icon ""
2510	}
2511
2512	#
2513	# SetLegendTip --
2514	#
2515	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2516	set fname $_curFldName
2517	set c $itk_component(view)
2518	set w [winfo width $c]
2519	set h [winfo height $c]
2520	set font "Arial 8"
2521	set lineht [font metrics $font -linespace]
2522
2523	set ih [image height $_image(legend)]
2524	# Subtract off the offset of the color ramp from the top of the canvas
2525	set iy [expr $y - ($lineht + 2)]
2526
2527	if { [string match "component*" $fname] } {
2528	set title ""
2529	} else {
2530	if { [info exists _fields($fname)] } {
2531	foreach { title units } $_fields($fname) break
2532	if { $units != "" } {
2533	set title [format "%s (%s)" $title $units]
2534	}
2535	} else {
2536	set title $fname
2537	}
2538	}
2539	# If there's a legend title, increase the offset by the line height.
2540	if { $title != "" } {
2541	incr iy -$lineht
2542	}
2543
2544	# Make a swatch of the selected color
2545	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2546	return
2547	}
2548
2549	if { ![info exists _image(swatch)] } {
2550	set _image(swatch) [image create photo -width 24 -height 24]
2551	}
2552	set color [eval format "\#%02x%02x%02x" $pixel]
2553	$_image(swatch) put black -to 0 0 23 23
2554	$_image(swatch) put $color -to 1 1 22 22
2555
2556	# Compute the value of the point
2557	if { [info exists _limits($fname)] } {
2558	foreach { vmin vmax } $_limits($fname) break
2559	set t [expr 1.0 - (double($iy) / double($ih-1))]
2560	set value [expr $t * ($vmax - $vmin) + $vmin]
2561	} else {
2562	set value 0.0
2563	}
2564	set tipx [expr $x + 15]
2565	set tipy [expr $y - 5]
2566	.rappturetooltip configure -icon $_image(swatch)
2567	if { [info exists _isolines($y)] } {
2568	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2569	} else {
2570	Rappture::Tooltip::text $c [format "$title %g" $value]
2571	}
2572	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2573	}
2574
2575	# ----------------------------------------------------------------------
2576	# USAGE: _dropdown post
2577	# USAGE: _dropdown unpost
2578	# USAGE: _dropdown select
2579	#
2580	# Used internally to handle the dropdown list for this combobox. The
2581	# post/unpost options are invoked when the list is posted or unposted
2582	# to manage the relief of the controlling button. The select option
2583	# is invoked whenever there is a selection from the list, to assign
2584	# the value back to the gauge.
2585	# ----------------------------------------------------------------------
2586	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2587	set c $itk_component(view)
2588	switch -- $option {
2589	post {
2590	foreach { x1 y1 x2 y2 } [$c bbox title] break
2591	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2592	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2593	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2594	tk_popup $itk_component(fieldmenu) $x $y
2595	}
2596	activate {
2597	$c itemconfigure title -fill red
2598	}
2599	deactivate {
2600	$c itemconfigure title -fill $itk_option(-plotforeground)
2601	}
2602	invoke {
2603	$itk_component(field) value $_curFldLabel
2604	AdjustSetting -field
2605	}
2606	default {
2607	error "bad option \"$option\": should be post, unpost, select"
2608	}
2609	}
2610	}
2611
2612	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2613	if { $_settings(-isheightmap) } {
2614	set val $_settings(-heightmapscale)
2615	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2616	return $sval
2617	}
2618	return 0
2619	}
2620
2621	itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2622	array set positions {
2623	front "0.707107 0.707107 0 0"
2624	back "0 0 0.707107 0.707107"
2625	left "0.5 0.5 -0.5 -0.5"
2626	right "0.5 0.5 0.5 0.5"
2627	top "1 0 0 0"
2628	bottom "0 1 0 0"
2629	}
2630	foreach name { qw qx qy qz } value $positions($side) {
2631	set _view($name) $value
2632	}
2633	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2634	$_arcball quaternion $q
2635	SendCmd "camera orient $q"
2636	SendCmd "camera reset"
2637	set _view(xpan) 0
2638	set _view(ypan) 0
2639	set _view(zoom) 1.0
2640	}
2641
2642	itcl::body Rappture::VtkHeightmapViewer::UpdateContourList {} {
2643	if {$_currentNumIsolines == 0} {
2644	set _contourList ""
2645	return
2646	}
2647	if { ![info exists _limits($_curFldName)] } {
2648	return
2649	}
2650	foreach { vmin vmax } $_limits($_curFldName) break
2651	set v [blt::vector create \#auto]
2652	$v seq $vmin $vmax [expr $_currentNumIsolines+2]
2653	$v delete end 0
2654	set _contourList [$v range 0 end]
2655	blt::vector destroy $v
2656	}

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