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source: branches/1.4/gui/scripts/vtkheightmapviewer.tcl @ 4984

Last change on this file since 4984 was 4770, checked in by ldelgass, 10 years ago
merge r4769 from trunk
File size: 88.1 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkheightmapviewer - Vtk heightmap viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2014 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 parameters {title args} {
61	# do nothing
62	}
63	public method scale {args}
64
65	# The following methods are only used by this class.
66	private method AdjustSetting {what {value ""}}
67	private method BuildAxisTab {}
68	private method BuildCameraTab {}
69	private method BuildColormap { name }
70	private method BuildContourTab {}
71	private method BuildDownloadPopup { widget command }
72	private method CameraReset {}
73	private method Combo { option }
74	private method Connect {}
75	private method CurrentDatasets {args}
76	private method Disconnect {}
77	private method DoResize {}
78	private method DoRotate {}
79	private method DrawLegend {}
80	private method EnterLegend { x y }
81	private method EventuallyRequestLegend {}
82	private method EventuallyResize { w h }
83	private method EventuallyRotate { q }
84	private method GetHeightmapScale {}
85	private method GetImage { args }
86	private method GetVtkData { args }
87	private method InitSettings { args }
88	private method IsValidObject { dataobj }
89	private method LeaveLegend {}
90	private method MotionLegend { x y }
91	private method Pan {option x y}
92	private method PanCamera {}
93	private method Pick {x y}
94	private method QuaternionToView { q } {
95	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
96	}
97	private method Rebuild {}
98	private method ReceiveDataset { args }
99	private method ReceiveImage { args }
100	private method ReceiveLegend { colormap title min max size }
101	private method RequestLegend {}
102	private method ResetAxes {}
103	private method Rotate {option x y}
104	private method SetCurrentColormap { color }
105	private method SetLegendTip { x y }
106	private method SetObjectStyle { dataobj comp }
107	private method SetOrientation { side }
108	private method UpdateContourList {}
109	private method ViewToQuaternion {} {
110	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
111	}
112	private method Zoom {option}
113
114	private variable _arcball ""
115	private variable _dlist "" ; # list of data objects
116	private variable _obj2datasets
117	private variable _obj2ovride ; # maps dataobj => style override
118	private variable _comp2scale; # maps dataset to the heightmap scale.
119	private variable _datasets ; # contains all the dataobj-component
120	; # datasets in the server
121	private variable _colormaps ; # contains all the colormaps
122	; # in the server.
123
124	# The name of the current colormap used. The colormap is global to all
125	# heightmaps displayed.
126	private variable _currentColormap ""
127	private variable _currentNumIsolines -1
128
129	private variable _maxScale 100; # This is the # of times the x-axis
130	# and y-axis ranges can differ before
131	# automatically turning on
132	# -stretchtofit
133
134	private variable _click ; # info used for rotate operations
135	private variable _limits ; # Holds overall limits for all dataobjs
136	# using the viewer.
137	private variable _view ; # view params for 3D view
138	private variable _settings
139	private variable _changed
140	private variable _initialStyle ""; # First found style in dataobjects.
141	private variable _reset 1; # Indicates if camera needs to be reset
142	# to starting position.
143	private variable _beforeConnect 1; # Indicates if camera needs to be reset
144	# to starting position.
145
146	private variable _first "" ; # This is the topmost dataset.
147	private variable _start 0
148	private variable _isolines
149	private variable _contourList ""
150
151	common _downloadPopup; # download options from popup
152	private common _hardcopy
153	private variable _width 0
154	private variable _height 0
155	private variable _legendWidth 0
156	private variable _legendHeight 0
157	private variable _resizePending 0
158	private variable _rotatePending 0
159	private variable _legendPending 0
160	private variable _fieldNames {}
161	private variable _fields
162	private variable _curFldName ""
163	private variable _curFldLabel ""
164	private variable _colorMode "scalar";# Mode of colormap (vmag or scalar)
165	}
166
167	itk::usual VtkHeightmapViewer {
168	keep -background -foreground -cursor -font
169	keep -plotbackground -plotforeground -mode
170	}
171
172	# ----------------------------------------------------------------------
173	# CONSTRUCTOR
174	# ----------------------------------------------------------------------
175	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
176	set _serverType "vtkvis"
177
178	EnableWaitDialog 900
179	# Rebuild event
180	$_dispatcher register !rebuild
181	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
182
183	# Resize event
184	$_dispatcher register !resize
185	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
186
187	# Rotate event
188	$_dispatcher register !rotate
189	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
190
191	# Legend event
192	$_dispatcher register !legend
193	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; 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	# Create image for legend colorbar.
203	set _image(legend) [image create photo]
204
205	# Initialize the view to some default parameters.
206	array set _view {
207	-ortho 0
208	-qw 0.36
209	-qx 0.25
210	-qy 0.50
211	-qz 0.70
212	-xpan 0
213	-ypan 0
214	-zoom 1.0
215	}
216	set _arcball [blt::arcball create 100 100]
217	$_arcball quaternion [ViewToQuaternion]
218
219	array set _settings {
220	-axisflymode "static"
221	-axislabels 1
222	-axisminorticks 1
223	-axisvisible 1
224	-colormap BCGYR
225	-colormapdiscrete 0
226	-colormapvisible 1
227	-edges 0
228	-field "Default"
229	-heightmapscale 50
230	-isheightmap 0
231	-isolinecolor black
232	-isolinesvisible 1
233	-legendvisible 1
234	-lighting 1
235	-numisolines 10
236	-opacity 100
237	-outline 0
238	-savelighting 1
239	-saveopacity 100
240	-saveoutline 0
241	-stretchtofit 0
242	-wireframe 0
243	-xgrid 0
244	-ygrid 0
245	-zgrid 0
246	}
247	array set _changed {
248	-colormap 0
249	-numisolines 0
250	-opacity 0
251	}
252	itk_component add view {
253	canvas $itk_component(plotarea).view \
254	-highlightthickness 0 -borderwidth 0
255	} {
256	usual
257	ignore -highlightthickness -borderwidth -background
258	}
259
260	itk_component add fieldmenu {
261	menu $itk_component(plotarea).menu \
262	-relief flat \
263	-tearoff no
264	} {
265	usual
266	ignore -background -foreground -relief -tearoff
267	}
268	set c $itk_component(view)
269	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
270	bind $c <4> [itcl::code $this Zoom in 0.25]
271	bind $c <5> [itcl::code $this Zoom out 0.25]
272	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
273	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
274	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
275	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
276	bind $c <Enter> "focus %W"
277	bind $c <Control-F1> [itcl::code $this ToggleConsole]
278
279	# Fix the scrollregion in case we go off screen
280	$c configure -scrollregion [$c bbox all]
281
282	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
283	set _map(cwidth) -1
284	set _map(cheight) -1
285	set _map(zoom) 1.0
286	set _map(original) ""
287
288	set f [$itk_component(main) component controls]
289	itk_component add reset {
290	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
291	-highlightthickness 0 \
292	-image [Rappture::icon reset-view] \
293	-command [itcl::code $this CameraReset]
294	} {
295	usual
296	ignore -highlightthickness
297	}
298	pack $itk_component(reset) -side top -padx 2 -pady { 2 0 }
299	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
300
301	itk_component add zoomin {
302	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
303	-highlightthickness 0 \
304	-image [Rappture::icon zoom-in] \
305	-command [itcl::code $this Zoom in]
306	} {
307	usual
308	ignore -highlightthickness
309	}
310	pack $itk_component(zoomin) -side top -padx 2 -pady { 2 0 }
311	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
312
313	itk_component add zoomout {
314	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
315	-highlightthickness 0 \
316	-image [Rappture::icon zoom-out] \
317	-command [itcl::code $this Zoom out]
318	} {
319	usual
320	ignore -highlightthickness
321	}
322	pack $itk_component(zoomout) -side top -padx 2 -pady { 2 0 }
323	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
324
325	itk_component add mode {
326	Rappture::PushButton $f.mode \
327	-onimage [Rappture::icon surface] \
328	-offimage [Rappture::icon surface] \
329	-variable [itcl::scope _settings(-isheightmap)] \
330	-command [itcl::code $this AdjustSetting -isheightmap] \
331	}
332	Rappture::Tooltip::for $itk_component(mode) \
333	"Toggle the surface/contour on/off"
334	pack $itk_component(mode) -padx 2 -pady { 2 0 }
335
336	itk_component add stretchtofit {
337	Rappture::PushButton $f.stretchtofit \
338	-onimage [Rappture::icon stretchtofit] \
339	-offimage [Rappture::icon stretchtofit] \
340	-variable [itcl::scope _settings(-stretchtofit)] \
341	-command [itcl::code $this AdjustSetting -stretchtofit] \
342	}
343	Rappture::Tooltip::for $itk_component(stretchtofit) \
344	"Stretch plot to fit window on/off"
345	pack $itk_component(stretchtofit) -padx 2 -pady 2
346
347	if { [catch {
348	BuildContourTab
349	BuildAxisTab
350	BuildCameraTab
351	} errs] != 0 } {
352	global errorInfo
353	puts stderr "errs=$errs errorInfo=$errorInfo"
354	}
355
356	# Hack around the Tk panewindow. The problem is that the requested
357	# size of the 3d view isn't set until an image is retrieved from
358	# the server. So the panewindow uses the tiny size.
359	set w 10000
360	pack forget $itk_component(view)
361	blt::table $itk_component(plotarea) \
362	0,0 $itk_component(view) -fill both -reqwidth $w
363	blt::table configure $itk_component(plotarea) c1 -resize none
364
365	# Bindings for panning via mouse
366	bind $itk_component(view) <ButtonPress-2> \
367	[itcl::code $this Pan click %x %y]
368	bind $itk_component(view) <B2-Motion> \
369	[itcl::code $this Pan drag %x %y]
370	bind $itk_component(view) <ButtonRelease-2> \
371	[itcl::code $this Pan release %x %y]
372
373	#bind $itk_component(view) <ButtonRelease-3> \
374	# [itcl::code $this Pick %x %y]
375
376	# Bindings for panning via keyboard
377	bind $itk_component(view) <KeyPress-Left> \
378	[itcl::code $this Pan set -10 0]
379	bind $itk_component(view) <KeyPress-Right> \
380	[itcl::code $this Pan set 10 0]
381	bind $itk_component(view) <KeyPress-Up> \
382	[itcl::code $this Pan set 0 -10]
383	bind $itk_component(view) <KeyPress-Down> \
384	[itcl::code $this Pan set 0 10]
385	bind $itk_component(view) <Shift-KeyPress-Left> \
386	[itcl::code $this Pan set -2 0]
387	bind $itk_component(view) <Shift-KeyPress-Right> \
388	[itcl::code $this Pan set 2 0]
389	bind $itk_component(view) <Shift-KeyPress-Up> \
390	[itcl::code $this Pan set 0 -2]
391	bind $itk_component(view) <Shift-KeyPress-Down> \
392	[itcl::code $this Pan set 0 2]
393
394	# Bindings for zoom via keyboard
395	bind $itk_component(view) <KeyPress-Prior> \
396	[itcl::code $this Zoom out]
397	bind $itk_component(view) <KeyPress-Next> \
398	[itcl::code $this Zoom in]
399
400	bind $itk_component(view) <Enter> "focus $itk_component(view)"
401
402	if {[string equal "x11" [tk windowingsystem]]} {
403	# Bindings for zoom via mouse
404	bind $itk_component(view) <4> [itcl::code $this Zoom out]
405	bind $itk_component(view) <5> [itcl::code $this Zoom in]
406	}
407
408	set _image(download) [image create photo]
409	eval itk_initialize $args
410	Connect
411	set _beforeConnect 0
412	}
413
414	# ----------------------------------------------------------------------
415	# DESTRUCTOR
416	# ----------------------------------------------------------------------
417	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
418	Disconnect
419	image delete $_image(plot)
420	image delete $_image(download)
421	catch { blt::arcball destroy $_arcball }
422	}
423
424	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
425	if { $_width < 2 } {
426	set _width 500
427	}
428	if { $_height < 2 } {
429	set _height 500
430	}
431	set _start [clock clicks -milliseconds]
432	SendCmd "screen size [expr $_width - 20] $_height"
433
434	set font "Arial 8"
435	set lh [font metrics $font -linespace]
436	set h [expr {$_height - 2 * ($lh + 2)}]
437	if { $h != $_legendHeight } {
438	EventuallyRequestLegend
439	} else {
440	DrawLegend
441	}
442	set _resizePending 0
443	}
444
445	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
446	SendCmd "camera orient [ViewToQuaternion]"
447	set _rotatePending 0
448	}
449
450	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
451	if { !$_legendPending } {
452	set _legendPending 1
453	$_dispatcher event -idle !legend
454	}
455	}
456
457	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
458	set _width $w
459	set _height $h
460	$_arcball resize $w $h
461	if { !$_resizePending } {
462	set _resizePending 1
463	$_dispatcher event -after 250 !resize
464	}
465	}
466
467	set rotate_delay 100
468
469	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
470	QuaternionToView $q
471	if { !$_rotatePending } {
472	set _rotatePending 1
473	global rotate_delay
474	$_dispatcher event -after $rotate_delay !rotate
475	}
476	}
477
478	# ----------------------------------------------------------------------
479	# USAGE: add <dataobj> ?<settings>?
480	#
481	# Clients use this to add a data object to the plot. The optional
482	# <settings> are used to configure the plot. Allowed settings are
483	# -color, -brightness, -width, -linestyle, and -raise.
484	# ----------------------------------------------------------------------
485	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
486	if { ![$dataobj isvalid] } {
487	return; # Object doesn't contain valid data.
488	}
489	array set params {
490	-color auto
491	-width 1
492	-linestyle solid
493	-brightness 0
494	-raise 0
495	-description ""
496	-param ""
497	-type ""
498	}
499	array set params $settings
500	set params(-description) ""
501	set params(-param) ""
502	array set params $settings
503
504	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
505	# can't handle -autocolors yet
506	set params(-color) white
507	}
508	set pos [lsearch -exact $_dlist $dataobj]
509	if {$pos < 0} {
510	lappend _dlist $dataobj
511	}
512	set _obj2ovride($dataobj-color) $params(-color)
513	set _obj2ovride($dataobj-width) $params(-width)
514	set _obj2ovride($dataobj-raise) $params(-raise)
515	$_dispatcher event -idle !rebuild
516	}
517
518
519	# ----------------------------------------------------------------------
520	# USAGE: delete ?<dataobj1> <dataobj2> ...?
521	#
522	# Clients use this to delete a dataobj from the plot. If no dataobjs
523	# are specified, then all dataobjs are deleted. No data objects are
524	# deleted. They are only removed from the display list.
525	#
526	# ----------------------------------------------------------------------
527	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
528	if { [llength $args] == 0} {
529	set args $_dlist
530	}
531	# Delete all specified dataobjs
532	set changed 0
533	foreach dataobj $args {
534	set pos [lsearch -exact $_dlist $dataobj]
535	if { $pos < 0 } {
536	continue; # Don't know anything about it.
537	}
538	# Remove it from the dataobj list.
539	set _dlist [lreplace $_dlist $pos $pos]
540	array unset _obj2ovride $dataobj-*
541	array unset _settings $dataobj-*
542	set changed 1
543	}
544	# If anything changed, then rebuild the plot
545	if { $changed } {
546	$_dispatcher event -idle !rebuild
547	}
548	}
549
550	# ----------------------------------------------------------------------
551	# USAGE: get ?-objects?
552	# USAGE: get ?-visible?
553	# USAGE: get ?-image view?
554	#
555	# Clients use this to query the list of objects being plotted, in
556	# order from bottom to top of this result. The optional "-image"
557	# flag can also request the internal images being shown.
558	# ----------------------------------------------------------------------
559	itcl::body Rappture::VtkHeightmapViewer::get {args} {
560	if {[llength $args] == 0} {
561	set args "-objects"
562	}
563	set op [lindex $args 0]
564	switch -- $op {
565	"-objects" {
566	# put the dataobj list in order according to -raise options
567	set dlist {}
568	foreach dataobj $_dlist {
569	if { ![IsValidObject $dataobj] } {
570	continue
571	}
572	if {[info exists _obj2ovride($dataobj-raise)] &&
573	$_obj2ovride($dataobj-raise)} {
574	set dlist [linsert $dlist 0 $dataobj]
575	} else {
576	lappend dlist $dataobj
577	}
578	}
579	return $dlist
580	}
581	"-visible" {
582	set dlist {}
583	foreach dataobj $_dlist {
584	if { ![IsValidObject $dataobj] } {
585	continue
586	}
587	if { ![info exists _obj2ovride($dataobj-raise)] } {
588	# No setting indicates that the object isn't visible.
589	continue
590	}
591	# Otherwise use the -raise parameter to put the object to
592	# the front of the list.
593	if { $_obj2ovride($dataobj-raise) } {
594	set dlist [linsert $dlist 0 $dataobj]
595	} else {
596	lappend dlist $dataobj
597	}
598	}
599	return $dlist
600	}
601	-image {
602	if {[llength $args] != 2} {
603	error "wrong # args: should be \"get -image view\""
604	}
605	switch -- [lindex $args end] {
606	view {
607	return $_image(plot)
608	}
609	default {
610	error "bad image name \"[lindex $args end]\": should be view"
611	}
612	}
613	}
614	default {
615	error "bad option \"$op\": should be -objects or -image"
616	}
617	}
618	}
619
620	#
621	# scale --
622	#
623	# This gets called either incrementally as new simulations are
624	# added or all at once as a sequence of heightmaps.
625	# This accounts for all objects--even those not showing on the
626	# screen. Because of this, the limits are appropriate for all
627	# objects as the user scans through data in the ResultSet viewer.
628	#
629	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
630	foreach dataobj $args {
631	if { ![$dataobj isvalid] } {
632	continue; # Object doesn't contain valid data.
633	}
634	foreach axis { x y } {
635	set lim [$dataobj limits $axis]
636	if { ![info exists _limits($axis)] } {
637	set _limits($axis) $lim
638	continue
639	}
640	foreach {min max} $lim break
641	foreach {amin amax} $_limits($axis) break
642	if { $amin > $min } {
643	set amin $min
644	}
645	if { $amax < $max } {
646	set amax $max
647	}
648	set _limits($axis) [list $amin $amax]
649	set units [$dataobj hints ${axis}units]
650	set found($units) 1
651	}
652	foreach { fname lim } [$dataobj fieldlimits] {
653	if { ![info exists _limits($fname)] } {
654	set _limits($fname) $lim
655	continue
656	}
657	foreach {min max} $lim break
658	foreach {fmin fmax} $_limits($fname) break
659	if { $fmin > $min } {
660	set fmin $min
661	}
662	if { $fmax < $max } {
663	set fmax $max
664	}
665	set _limits($fname) [list $fmin $fmax]
666	}
667	}
668	if { [array size found] > 1 } {
669	set _settings(-stretchtofit) 1
670	} else {
671	# Check if the range of the x and y axes requires that we stretch
672	# the contour to fit the plotting area. This can happen when the
673	# x and y scales differ greatly (> 100x)
674	foreach {xmin xmax} $_limits(x) break
675	foreach {ymin ymax} $_limits(y) break
676	if { (($xmax - $xmin) > (($ymax -$ymin) * $_maxScale)) \|\|
677	((($xmax - $xmin) * $_maxScale) < ($ymax -$ymin)) } {
678	set _settings(-stretchtofit) 1
679	}
680	}
681	}
682
683	# ----------------------------------------------------------------------
684	# USAGE: download coming
685	# USAGE: download controls <downloadCommand>
686	# USAGE: download now
687	#
688	# Clients use this method to create a downloadable representation
689	# of the plot. Returns a list of the form {ext string}, where
690	# "ext" is the file extension (indicating the type of data) and
691	# "string" is the data itself.
692	# ----------------------------------------------------------------------
693	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
694	switch $option {
695	coming {
696	if {[catch {
697	blt::winop snap $itk_component(plotarea) $_image(download)
698	}]} {
699	$_image(download) configure -width 1 -height 1
700	$_image(download) put #000000
701	}
702	}
703	controls {
704	set popup .vtkviewerdownload
705	if { ![winfo exists .vtkviewerdownload] } {
706	set inner [BuildDownloadPopup $popup [lindex $args 0]]
707	} else {
708	set inner [$popup component inner]
709	}
710	set _downloadPopup(image_controls) $inner.image_frame
711	set num [llength [get]]
712	set num [expr {($num == 1) ? "1 result" : "$num results"}]
713	set word [Rappture::filexfer::label downloadWord]
714	$inner.summary configure -text "$word $num in the following format:"
715	update idletasks ;# Fix initial sizes
716	return $popup
717	}
718	now {
719	set popup .vtkviewerdownload
720	if {[winfo exists .vtkviewerdownload]} {
721	$popup deactivate
722	}
723	switch -- $_downloadPopup(format) {
724	"image" {
725	return [$this GetImage [lindex $args 0]]
726	}
727	"vtk" {
728	return [$this GetVtkData [lindex $args 0]]
729	}
730	}
731	return ""
732	}
733	default {
734	error "bad option \"$option\": should be coming, controls, now"
735	}
736	}
737	}
738
739	# ----------------------------------------------------------------------
740	# USAGE: Connect ?<host:port>,<host:port>...?
741	#
742	# Clients use this method to establish a connection to a new
743	# server, or to reestablish a connection to the previous server.
744	# Any existing connection is automatically closed.
745	# ----------------------------------------------------------------------
746	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
747	global readyForNextFrame
748	set readyForNextFrame 1
749	set _reset 1
750	set _hosts [GetServerList "vtkvis"]
751	if { "" == $_hosts } {
752	return 0
753	}
754	set result [VisViewer::Connect $_hosts]
755	if { $result } {
756	if { $_reportClientInfo } {
757	# Tell the server the viewer, hub, user and session.
758	# Do this immediately on connect before buffering any commands
759	global env
760
761	set info {}
762	set user "???"
763	if { [info exists env(USER)] } {
764	set user $env(USER)
765	}
766	set session "???"
767	if { [info exists env(SESSION)] } {
768	set session $env(SESSION)
769	}
770	lappend info "version" "$Rappture::version"
771	lappend info "build" "$Rappture::build"
772	lappend info "svnurl" "$Rappture::svnurl"
773	lappend info "installdir" "$Rappture::installdir"
774	lappend info "hub" [exec hostname]
775	lappend info "client" "vtkheightmapviewer"
776	lappend info "user" $user
777	lappend info "session" $session
778	SendCmd "clientinfo [list $info]"
779	}
780	set w [winfo width $itk_component(view)]
781	set h [winfo height $itk_component(view)]
782	EventuallyResize $w $h
783	}
784	return $result
785	}
786
787	#
788	# isconnected --
789	#
790	# Indicates if we are currently connected to the visualization server.
791	#
792	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
793	return [VisViewer::IsConnected]
794	}
795
796	#
797	# disconnect --
798	#
799	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
800	Disconnect
801	set _reset 1
802	}
803
804	#
805	# Disconnect --
806	#
807	# Clients use this method to disconnect from the current rendering
808	# server.
809	#
810	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
811	VisViewer::Disconnect
812
813	$_dispatcher cancel !rebuild
814	$_dispatcher cancel !resize
815	$_dispatcher cancel !rotate
816	$_dispatcher cancel !legend
817	# disconnected -- no more data sitting on server
818	array unset _datasets
819	array unset _data
820	array unset _colormaps
821	array unset _obj2datasets
822	global readyForNextFrame
823	set readyForNextFrame 1
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::VtkHeightmapViewer::ReceiveImage { args } {
834	global readyForNextFrame
835	set readyForNextFrame 1
836	array set info {
837	-token "???"
838	-bytes 0
839	-type image
840	}
841	array set info $args
842	set bytes [ReceiveBytes $info(-bytes)]
843	if { $info(-type) == "image" } {
844	if 0 {
845	set f [open "last.ppm" "w"]
846	fconfigure $f -encoding binary
847	puts -nonewline $f $bytes
848	close $f
849	}
850	$_image(plot) configure -data $bytes
851	set time [clock seconds]
852	set date [clock format $time]
853	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
854	if { $_start > 0 } {
855	set finish [clock clicks -milliseconds]
856	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
857	set _start 0
858	}
859	} elseif { $info(type) == "print" } {
860	set tag $this-print-$info(-token)
861	set _hardcopy($tag) $bytes
862	}
863	}
864
865	#
866	# ReceiveDataset --
867	#
868	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
869	if { ![isconnected] } {
870	return
871	}
872	set option [lindex $args 0]
873	switch -- $option {
874	"scalar" {
875	set option [lindex $args 1]
876	switch -- $option {
877	"world" {
878	foreach { x y z value tag } [lrange $args 2 end] break
879	}
880	"pixel" {
881	foreach { x y value tag } [lrange $args 2 end] break
882	}
883	}
884	}
885	"vector" {
886	set option [lindex $args 1]
887	switch -- $option {
888	"world" {
889	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
890	}
891	"pixel" {
892	foreach { x y vx vy vz tag } [lrange $args 2 end] break
893	}
894	}
895	}
896	"names" {
897	foreach { name } [lindex $args 1] {
898	#puts stderr "Dataset: $name"
899	}
900	}
901	default {
902	error "unknown dataset option \"$option\" from server"
903	}
904	}
905	}
906
907	# ----------------------------------------------------------------------
908	# USAGE: Rebuild
909	#
910	# Called automatically whenever something changes that affects the
911	# data in the widget. Clears any existing data and rebuilds the
912	# widget to display new data.
913	# ----------------------------------------------------------------------
914	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
915	set w [winfo width $itk_component(view)]
916	set h [winfo height $itk_component(view)]
917	if { $w < 2 \|\| $h < 2 } {
918	$_dispatcher event -idle !rebuild
919	return
920	}
921
922	# Turn on buffering of commands to the server. We don't want to
923	# be preempted by a server disconnect/reconnect (which automatically
924	# generates a new call to Rebuild).
925	StartBufferingCommands
926
927	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
928	set _width $w
929	set _height $h
930	$_arcball resize $w $h
931	DoResize
932	if { $_settings(-stretchtofit) } {
933	AdjustSetting -stretchtofit
934	}
935	}
936	if { $_reset } {
937	#
938	# Reset the camera and other view parameters
939	#
940	InitSettings -isheightmap -background
941
942	# Setting a custom exponent and label format for axes is causing
943	# a problem with rounding. Near zero ticks aren't rounded by
944	# the %g format. The VTK CubeAxes seem to currently work best
945	# when allowed to automatically set the exponent and precision
946	# based on the axis ranges. This does tend to result in less
947	# visual clutter, so I think it is best to use the automatic
948	# settings by default. We can test more fine-grained
949	# controls on the axis settings tab if necessary.
950	# -Leif
951	#SendCmd "axis exp 0 0 0 1"
952
953	SendCmd "axis lrot z 90"
954	$_arcball quaternion [ViewToQuaternion]
955	if {$_settings(-isheightmap) } {
956	if { $_view(-ortho)} {
957	SendCmd "camera mode ortho"
958	} else {
959	SendCmd "camera mode persp"
960	}
961	DoRotate
962	SendCmd "camera reset"
963	}
964	PanCamera
965	StopBufferingCommands
966	SendCmd "imgflush"
967	StartBufferingCommands
968	}
969
970	set _first ""
971	# Start off with no datasets are visible.
972	SendCmd "dataset visible 0"
973	set scale [GetHeightmapScale]
974	foreach dataobj [get -objects] {
975	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
976	set _first $dataobj
977	}
978	set _obj2datasets($dataobj) ""
979	foreach comp [$dataobj components] {
980	set tag $dataobj-$comp
981	if { ![info exists _datasets($tag)] } {
982	set bytes [$dataobj vtkdata $comp]
983	if 0 {
984	set f [open /tmp/vtkheightmap.vtk "w"]
985	fconfigure $f -translation binary -encoding binary
986	puts -nonewline $f $bytes
987	close $f
988	}
989	set length [string length $bytes]
990	if { $_reportClientInfo } {
991	set info {}
992	lappend info "tool_id" [$dataobj hints toolid]
993	lappend info "tool_name" [$dataobj hints toolname]
994	lappend info "tool_title" [$dataobj hints tooltitle]
995	lappend info "tool_command" [$dataobj hints toolcommand]
996	lappend info "tool_revision" [$dataobj hints toolrevision]
997	lappend info "dataset_label" [$dataobj hints label]
998	lappend info "dataset_size" $length
999	lappend info "dataset_tag" $tag
1000	SendCmd "clientinfo [list $info]"
1001	}
1002	SendCmd "dataset add $tag data follows $length"
1003	append _outbuf $bytes
1004	set _datasets($tag) 1
1005	SetObjectStyle $dataobj $comp
1006	}
1007	lappend _obj2datasets($dataobj) $tag
1008	if { [info exists _obj2ovride($dataobj-raise)] } {
1009	# Setting dataset visible enables outline
1010	# and heightmap
1011	SendCmd "dataset visible 1 $tag"
1012	}
1013	if { ![info exists _comp2scale($tag)] \|\|
1014	$_comp2scale($tag) != $scale } {
1015	SendCmd "heightmap heightscale $scale $tag"
1016	set _comp2scale($tag) $scale
1017	}
1018	}
1019	}
1020	if { $_first != "" } {
1021	$itk_component(field) choices delete 0 end
1022	$itk_component(fieldmenu) delete 0 end
1023	array unset _fields
1024	set _curFldName ""
1025	foreach cname [$_first components] {
1026	foreach fname [$_first fieldnames $cname] {
1027	if { [info exists _fields($fname)] } {
1028	continue
1029	}
1030	foreach { label units components } \
1031	[$_first fieldinfo $fname] break
1032	$itk_component(field) choices insert end "$fname" "$label"
1033	$itk_component(fieldmenu) add radiobutton -label "$label" \
1034	-value $label -variable [itcl::scope _curFldLabel] \
1035	-selectcolor red \
1036	-activebackground $itk_option(-plotbackground) \
1037	-activeforeground $itk_option(-plotforeground) \
1038	-font "Arial 8" \
1039	-command [itcl::code $this Combo invoke]
1040	set _fields($fname) [list $label $units $components]
1041	if { $_curFldName == "" } {
1042	set _curFldName $fname
1043	set _curFldLabel $label
1044	}
1045	}
1046	}
1047	$itk_component(field) value $_curFldLabel
1048	}
1049	InitSettings -stretchtofit -outline
1050
1051	if { $_reset } {
1052	SendCmd "axis tickpos outside"
1053	#SendCmd "axis lformat all %g"
1054
1055	foreach axis { x y z } {
1056	if { $axis == "z" } {
1057	set label [$_first hints label]
1058	} else {
1059	set label [$_first hints ${axis}label]
1060	}
1061	if { $label == "" } {
1062	if {$axis == "z"} {
1063	if { [string match "component*" $_curFldName] } {
1064	set label [string toupper $axis]
1065	} else {
1066	set label $_curFldLabel
1067	}
1068	} else {
1069	set label [string toupper $axis]
1070	}
1071	}
1072	# May be a space in the axis label.
1073	SendCmd [list axis name $axis $label]
1074
1075	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1076	if {$_curFldName != ""} {
1077	set units [lindex $_fields($_curFldName) 1]
1078	}
1079	} else {
1080	set units [$_first hints ${axis}units]
1081	}
1082	if { $units != "" } {
1083	# May be a space in the axis units.
1084	SendCmd [list axis units $axis $units]
1085	}
1086	}
1087	#
1088	# Reset the camera and other view parameters
1089	#
1090	ResetAxes
1091	$_arcball quaternion [ViewToQuaternion]
1092	if {$_settings(-isheightmap) } {
1093	if { $_view(-ortho)} {
1094	SendCmd "camera mode ortho"
1095	} else {
1096	SendCmd "camera mode persp"
1097	}
1098	DoRotate
1099	SendCmd "camera reset"
1100	}
1101	PanCamera
1102	InitSettings -xgrid -ygrid -zgrid \
1103	-axisvisible -axislabels -heightmapscale -field -isheightmap \
1104	-numisolines
1105	if { [array size _fields] < 2 } {
1106	catch {blt::table forget $itk_component(field) $itk_component(field_l)}
1107	}
1108	RequestLegend
1109	set _reset 0
1110	}
1111	global readyForNextFrame
1112	set readyForNextFrame 0; # Don't advance to the next frame
1113
1114	# Actually write the commands to the server socket. If it fails, we don't
1115	# care. We're finished here.
1116	blt::busy hold $itk_component(hull)
1117	StopBufferingCommands
1118	blt::busy release $itk_component(hull)
1119	}
1120
1121	# ----------------------------------------------------------------------
1122	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1123	#
1124	# Returns a list of server IDs for the current datasets being displayed. This
1125	# is normally a single ID, but it might be a list of IDs if the current data
1126	# object has multiple components.
1127	# ----------------------------------------------------------------------
1128	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1129	set flag [lindex $args 0]
1130	switch -- $flag {
1131	"-all" {
1132	if { [llength $args] > 1 } {
1133	error "CurrentDatasets: can't specify dataobj after \"-all\""
1134	}
1135	set dlist [get -objects]
1136	}
1137	"-visible" {
1138	if { [llength $args] > 1 } {
1139	set dlist {}
1140	set args [lrange $args 1 end]
1141	foreach dataobj $args {
1142	if { [info exists _obj2ovride($dataobj-raise)] } {
1143	lappend dlist $dataobj
1144	}
1145	}
1146	} else {
1147	set dlist [get -visible]
1148	}
1149	}
1150	default {
1151	set dlist $args
1152	}
1153	}
1154	set rlist ""
1155	foreach dataobj $dlist {
1156	foreach comp [$dataobj components] {
1157	set tag $dataobj-$comp
1158	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1159	lappend rlist $tag
1160	}
1161	}
1162	}
1163	return $rlist
1164	}
1165
1166	itcl::body Rappture::VtkHeightmapViewer::CameraReset {} {
1167	array set _view {
1168	-qw 0.36
1169	-qx 0.25
1170	-qy 0.50
1171	-qz 0.70
1172	-xpan 0
1173	-ypan 0
1174	-zoom 1.0
1175	}
1176	if { $_first != "" } {
1177	set location [$_first hints camera]
1178	if { $location != "" } {
1179	array set _view $location
1180	}
1181	}
1182	$_arcball quaternion [ViewToQuaternion]
1183	if {$_settings(-isheightmap) } {
1184	DoRotate
1185	}
1186	SendCmd "camera reset"
1187	}
1188
1189	# ----------------------------------------------------------------------
1190	# USAGE: Zoom in
1191	# USAGE: Zoom out
1192	# USAGE: Zoom reset
1193	#
1194	# Called automatically when the user clicks on one of the zoom
1195	# controls for this widget. Changes the zoom for the current view.
1196	# ----------------------------------------------------------------------
1197	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1198	switch -- $option {
1199	"in" {
1200	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1201	SendCmd "camera zoom $_view(-zoom)"
1202	}
1203	"out" {
1204	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1205	SendCmd "camera zoom $_view(-zoom)"
1206	}
1207	"reset" {
1208	array set _view {
1209	-xpan 0
1210	-ypan 0
1211	-zoom 1.0
1212	}
1213	SendCmd "camera reset"
1214	}
1215	}
1216	}
1217
1218	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1219	set x $_view(-xpan)
1220	set y $_view(-ypan)
1221	SendCmd "camera pan $x $y"
1222	}
1223
1224
1225	# ----------------------------------------------------------------------
1226	# USAGE: Rotate click <x> <y>
1227	# USAGE: Rotate drag <x> <y>
1228	# USAGE: Rotate release <x> <y>
1229	#
1230	# Called automatically when the user clicks/drags/releases in the
1231	# plot area. Moves the plot according to the user's actions.
1232	# ----------------------------------------------------------------------
1233	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1234	switch -- $option {
1235	"click" {
1236	$itk_component(view) configure -cursor fleur
1237	set _click(x) $x
1238	set _click(y) $y
1239	}
1240	"drag" {
1241	if {[array size _click] == 0} {
1242	Rotate click $x $y
1243	} else {
1244	set w [winfo width $itk_component(view)]
1245	set h [winfo height $itk_component(view)]
1246	if {$w <= 0 \|\| $h <= 0} {
1247	return
1248	}
1249
1250	if {[catch {
1251	# this fails sometimes for no apparent reason
1252	set dx [expr {double($x-$_click(x))/$w}]
1253	set dy [expr {double($y-$_click(y))/$h}]
1254	}]} {
1255	return
1256	}
1257	if { $dx == 0 && $dy == 0 } {
1258	return
1259	}
1260	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1261	EventuallyRotate $q
1262	set _click(x) $x
1263	set _click(y) $y
1264	}
1265	}
1266	"release" {
1267	Rotate drag $x $y
1268	$itk_component(view) configure -cursor ""
1269	catch {unset _click}
1270	}
1271	default {
1272	error "bad option \"$option\": should be click, drag, release"
1273	}
1274	}
1275	}
1276
1277	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1278	foreach tag [CurrentDatasets -visible] {
1279	SendCmd "dataset getscalar pixel $x $y $tag"
1280	}
1281	}
1282
1283	# ----------------------------------------------------------------------
1284	# USAGE: $this Pan click x y
1285	# $this Pan drag x y
1286	# $this Pan release x y
1287	#
1288	# Called automatically when the user clicks on one of the zoom
1289	# controls for this widget. Changes the zoom for the current view.
1290	# ----------------------------------------------------------------------
1291	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1292	switch -- $option {
1293	"set" {
1294	set w [winfo width $itk_component(view)]
1295	set h [winfo height $itk_component(view)]
1296	set x [expr $x / double($w)]
1297	set y [expr $y / double($h)]
1298	set _view(-xpan) [expr $_view(-xpan) + $x]
1299	set _view(-ypan) [expr $_view(-ypan) + $y]
1300	PanCamera
1301	return
1302	}
1303	"click" {
1304	set _click(x) $x
1305	set _click(y) $y
1306	$itk_component(view) configure -cursor hand1
1307	}
1308	"drag" {
1309	if { ![info exists _click(x)] } {
1310	set _click(x) $x
1311	}
1312	if { ![info exists _click(y)] } {
1313	set _click(y) $y
1314	}
1315	set w [winfo width $itk_component(view)]
1316	set h [winfo height $itk_component(view)]
1317	set dx [expr ($_click(x) - $x)/double($w)]
1318	set dy [expr ($_click(y) - $y)/double($h)]
1319	set _click(x) $x
1320	set _click(y) $y
1321	set _view(-xpan) [expr $_view(-xpan) - $dx]
1322	set _view(-ypan) [expr $_view(-ypan) - $dy]
1323	PanCamera
1324	}
1325	"release" {
1326	Pan drag $x $y
1327	$itk_component(view) configure -cursor ""
1328	}
1329	default {
1330	error "unknown option \"$option\": should set, click, drag, or release"
1331	}
1332	}
1333	}
1334
1335	# ----------------------------------------------------------------------
1336	# USAGE: InitSettings <what> ?<value>?
1337	#
1338	# Used internally to update rendering settings whenever parameters
1339	# change in the popup settings panel. Sends the new settings off
1340	# to the back end.
1341	# ----------------------------------------------------------------------
1342	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1343	foreach spec $args {
1344	if { [info exists _settings($_first${spec})] } {
1345	# Reset global setting with dataobj specific setting
1346	set _settings($spec) $_settings($_first${spec})
1347	}
1348	AdjustSetting $spec
1349	}
1350	}
1351
1352	#
1353	# AdjustSetting --
1354	#
1355	# Changes/updates a specific setting in the widget. There are
1356	# usually user-setable option. Commands are sent to the render
1357	# server.
1358	#
1359	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1360	if { $_beforeConnect } {
1361	return
1362	}
1363	switch -- $what {
1364	"-axisflymode" {
1365	set mode [$itk_component(axisflymode) value]
1366	set mode [$itk_component(axisflymode) translate $mode]
1367	set _settings($what) $mode
1368	SendCmd "axis flymode $mode"
1369	}
1370	"-axislabels" {
1371	set bool $_settings($what)
1372	SendCmd "axis labels all $bool"
1373	}
1374	"-axisminorticks" {
1375	set bool $_settings($what)
1376	SendCmd "axis minticks all $bool"
1377	}
1378	"-axisvisible" {
1379	set bool $_settings($what)
1380	SendCmd "axis visible all $bool"
1381	}
1382	"-background" {
1383	set bg [$itk_component(background) value]
1384	array set fgcolors {
1385	"black" "white"
1386	"white" "black"
1387	"grey" "black"
1388	}
1389	set fg $fgcolors($bg)
1390	configure -plotbackground $bg -plotforeground $fg
1391	$itk_component(view) delete "legend"
1392	SendCmd "screen bgcolor [Color2RGB $bg]"
1393	SendCmd "outline color [Color2RGB $fg]"
1394	SendCmd "axis color all [Color2RGB $fg]"
1395	DrawLegend
1396	}
1397	"-colormap" {
1398	set _changed($what) 1
1399	StartBufferingCommands
1400	set color [$itk_component(colormap) value]
1401	set _settings($what) $color
1402	if { $color == "none" } {
1403	if { $_settings(-colormapvisible) } {
1404	SendCmd "heightmap surface 0"
1405	set _settings(-colormapvisible) 0
1406	}
1407	} else {
1408	if { !$_settings(-colormapvisible) } {
1409	SendCmd "heightmap surface 1"
1410	set _settings(-colormapvisible) 1
1411	}
1412	SetCurrentColormap $color
1413	if {$_settings(-colormapdiscrete)} {
1414	set numColors [expr $_settings(-numisolines) + 1]
1415	SendCmd "colormap res $numColors $color"
1416	}
1417	}
1418	StopBufferingCommands
1419	EventuallyRequestLegend
1420	}
1421	"-colormapvisible" {
1422	set bool $_settings($what)
1423	SendCmd "heightmap surface $bool"
1424	}
1425	"-colormapdiscrete" {
1426	set bool $_settings($what)
1427	set numColors [expr $_settings(-numisolines) + 1]
1428	StartBufferingCommands
1429	if {$bool} {
1430	SendCmd "colormap res $numColors"
1431	# Discrete colormap requires preinterp on
1432	SendCmd "heightmap preinterp on"
1433	} else {
1434	SendCmd "colormap res default"
1435	# FIXME: add setting for preinterp (default on)
1436	SendCmd "heightmap preinterp on"
1437	}
1438	StopBufferingCommands
1439	EventuallyRequestLegend
1440	}
1441	"-edges" {
1442	set bool $_settings($what)
1443	SendCmd "heightmap edges $bool"
1444	}
1445	"-field" {
1446	set label [$itk_component(field) value]
1447	set fname [$itk_component(field) translate $label]
1448	set _settings($what) $fname
1449	if { [info exists _fields($fname)] } {
1450	foreach { label units components } $_fields($fname) break
1451	if { $components > 1 } {
1452	set _colorMode vmag
1453	} else {
1454	set _colorMode scalar
1455	}
1456	set _curFldName $fname
1457	set _curFldLabel $label
1458	} else {
1459	puts stderr "unknown field \"$fname\""
1460	return
1461	}
1462	set label [$_first hints label]
1463	if { $label == "" } {
1464	if { [string match "component*" $_curFldName] } {
1465	set label Z
1466	} else {
1467	set label $_curFldLabel
1468	}
1469	}
1470	# May be a space in the axis label.
1471	SendCmd [list axis name z $label]
1472
1473	if { [$_first hints zunits] == "" } {
1474	set units [lindex $_fields($_curFldName) 1]
1475	} else {
1476	set units [$_first hints zunits]
1477	}
1478	if { $units != "" } {
1479	# May be a space in the axis units.
1480	SendCmd [list axis units z $units]
1481	}
1482	# Get the new limits because the field changed.
1483	ResetAxes
1484	SendCmd "dataset scalar $_curFldName"
1485	SendCmd "heightmap colormode scalar $_curFldName"
1486	Zoom reset
1487	UpdateContourList
1488	DrawLegend
1489	}
1490	"-heightmapscale" {
1491	if { $_settings(-isheightmap) } {
1492	set scale [GetHeightmapScale]
1493	# Have to set the datasets individually because we are
1494	# tracking them in _comp2scale.
1495	foreach dataset [CurrentDatasets -all] {
1496	SendCmd "heightmap heightscale $scale $dataset"
1497	set _comp2scale($dataset) $scale
1498	}
1499	ResetAxes
1500	}
1501	}
1502	"-isheightmap" {
1503	set bool $_settings($what)
1504	set c $itk_component(view)
1505	StartBufferingCommands
1506	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1507	if { $bool } {
1508	set _settings(-heightmapscale) 50
1509	set _settings(-opacity) $_settings(-saveopacity)
1510	set _settings(-lighting) $_settings(-savelighting)
1511	set _settings(-outline) 0
1512	} else {
1513	set _settings(-heightmapscale) 0
1514	set _settings(-lighting) 0
1515	set _settings(-opacity) 100
1516	set _settings(-outline) $_settings(-saveoutline)
1517	}
1518	InitSettings -lighting -opacity -outline
1519	set scale [GetHeightmapScale]
1520	# Have to set the datasets individually because we are
1521	# tracking them in _comp2scale.
1522	foreach dataset [CurrentDatasets -all] {
1523	SendCmd "heightmap heightscale $scale $dataset"
1524	set _comp2scale($dataset) $scale
1525	}
1526	if { $bool } {
1527	$itk_component(lighting) configure -state normal
1528	$itk_component(opacity) configure -state normal
1529	$itk_component(scale) configure -state normal
1530	$itk_component(opacity_l) configure -state normal
1531	$itk_component(scale_l) configure -state normal
1532	$itk_component(outline) configure -state disabled
1533	if {$_view(-ortho)} {
1534	SendCmd "camera mode ortho"
1535	} else {
1536	SendCmd "camera mode persp"
1537	}
1538	} else {
1539	$itk_component(lighting) configure -state disabled
1540	$itk_component(opacity) configure -state disabled
1541	$itk_component(scale) configure -state disabled
1542	$itk_component(opacity_l) configure -state disabled
1543	$itk_component(scale_l) configure -state disabled
1544	$itk_component(outline) configure -state normal
1545	SendCmd "camera mode image"
1546	}
1547	if {$_settings(-stretchtofit)} {
1548	if {$scale == 0} {
1549	SendCmd "camera aspect window"
1550	} else {
1551	SendCmd "camera aspect square"
1552	}
1553	}
1554	ResetAxes
1555	if { $bool } {
1556	set q [ViewToQuaternion]
1557	$_arcball quaternion $q
1558	SendCmd "camera orient $q"
1559	} else {
1560	bind $c <ButtonPress-1> {}
1561	bind $c <B1-Motion> {}
1562	bind $c <ButtonRelease-1> {}
1563	}
1564	Zoom reset
1565	# Fix the mouse bindings for rotation/panning and the
1566	# camera mode. Ideally we'd create a bindtag for these.
1567	if { $bool } {
1568	# Bindings for rotation via mouse
1569	bind $c <ButtonPress-1> \
1570	[itcl::code $this Rotate click %x %y]
1571	bind $c <B1-Motion> \
1572	[itcl::code $this Rotate drag %x %y]
1573	bind $c <ButtonRelease-1> \
1574	[itcl::code $this Rotate release %x %y]
1575	}
1576	StopBufferingCommands
1577	}
1578	"-isolinecolor" {
1579	set color [$itk_component(isolinecolor) value]
1580	if { $color == "none" } {
1581	if { $_settings(-isolinesvisible) } {
1582	SendCmd "heightmap isolines 0"
1583	set _settings(-isolinesvisible) 0
1584	}
1585	} else {
1586	if { !$_settings(-isolinesvisible) } {
1587	SendCmd "heightmap isolines 1"
1588	set _settings(-isolinesvisible) 1
1589	}
1590	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1591	}
1592	DrawLegend
1593	}
1594	"-isolinesvisible" {
1595	set bool $_settings($what)
1596	SendCmd "heightmap isolines $bool"
1597	DrawLegend
1598	}
1599	"-legendvisible" {
1600	if { !$_settings($what) } {
1601	$itk_component(view) delete legend
1602	}
1603	DrawLegend
1604	}
1605	"-lighting" {
1606	if { $_settings(-isheightmap) } {
1607	set _settings(-savelighting) $_settings($what)
1608	set bool $_settings($what)
1609	SendCmd "heightmap lighting $bool"
1610	} else {
1611	SendCmd "heightmap lighting 0"
1612	}
1613	}
1614	"-numisolines" {
1615	set _settings($what) [$itk_component(numisolines) value]
1616	set _currentNumIsolines $_settings($what)
1617	UpdateContourList
1618	set _changed($what) 1
1619	SendCmd "heightmap contourlist [list $_contourList]"
1620	if {$_settings(-colormapdiscrete)} {
1621	set numColors [expr $_settings($what) + 1]
1622	SendCmd "colormap res $numColors"
1623	EventuallyRequestLegend
1624	} else {
1625	DrawLegend
1626	}
1627	}
1628	"-opacity" {
1629	set _changed($what) 1
1630	set val [expr $_settings($what) * 0.01]
1631	if { $_settings(-isheightmap) } {
1632	set _settings(-saveopacity) $_settings($what)
1633	SendCmd "heightmap opacity $val"
1634	} else {
1635	SendCmd "heightmap opacity 1.0"
1636	}
1637	}
1638	"-outline" {
1639	if { $_settings(-isheightmap) } {
1640	SendCmd "outline visible 0"
1641	} else {
1642	set _settings(-saveoutline) $_settings($what)
1643	set bool $_settings($what)
1644	SendCmd "outline visible $bool"
1645	}
1646	}
1647	"-stretchtofit" {
1648	set bool $_settings($what)
1649	if { $bool } {
1650	set heightScale [GetHeightmapScale]
1651	if {$heightScale == 0} {
1652	SendCmd "camera aspect window"
1653	} else {
1654	SendCmd "camera aspect square"
1655	}
1656	} else {
1657	SendCmd "camera aspect native"
1658	}
1659	Zoom reset
1660	}
1661	"-wireframe" {
1662	set bool $_settings($what)
1663	SendCmd "heightmap wireframe $bool"
1664	}
1665	"-xgrid" - "-ygrid" - "-zgrid" {
1666	set axis [string tolower [string range $what 1 1]]
1667	set bool $_settings($what)
1668	SendCmd "axis grid $axis $bool"
1669	}
1670	default {
1671	error "don't know how to fix $what"
1672	}
1673	}
1674	}
1675
1676	#
1677	# RequestLegend --
1678	#
1679	# Request a new legend from the server. The size of the legend
1680	# is determined from the height of the canvas.
1681	#
1682	# This should be called when
1683	# 1. A new current colormap is set.
1684	# 2. Window is resized.
1685	# 3. The limits of the data have changed. (Just need a redraw).
1686	# 4. Number of isolines have changed. (Just need a redraw).
1687	# 5. Legend becomes visible (Just need a redraw).
1688	#
1689	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1690	set _legendPending 0
1691	set font "Arial 8"
1692	set w 12
1693	set lineht [font metrics $font -linespace]
1694	# color ramp height = (canvas height) - (min and max value lines) - 2
1695	set h [expr {$_height - 2 * ($lineht + 2)}]
1696	set _legendHeight $h
1697
1698	set fname $_curFldName
1699	if { [string match "component*" $fname] } {
1700	set title ""
1701	} else {
1702	if { [info exists _fields($fname)] } {
1703	foreach { title units } $_fields($fname) break
1704	if { $units != "" } {
1705	set title [format "%s (%s)" $title $units]
1706	}
1707	} else {
1708	set title $fname
1709	}
1710	}
1711	# If there's a title too, substract one more line
1712	if { $title != "" } {
1713	incr h -$lineht
1714	}
1715	if { $h < 1 } {
1716	return
1717	}
1718	# Set the legend on the first heightmap dataset.
1719	if { $_currentColormap != "" } {
1720	set cmap $_currentColormap
1721	#SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1722	SendCmd "legend2 $cmap $w $h"
1723	}
1724	}
1725
1726	#
1727	# ResetAxes --
1728	#
1729	# Set axis z bounds and range
1730	#
1731	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1732	if { ![info exists _limits($_curFldName)]} {
1733	SendCmd "dataset maprange all"
1734	SendCmd "axis autorange z on"
1735	SendCmd "axis autobounds z on"
1736	return
1737	}
1738	foreach { xmin xmax } $_limits(x) break
1739	foreach { ymin ymax } $_limits(y) break
1740	foreach { vmin vmax } $_limits($_curFldName) break
1741
1742	global tcl_precision
1743	set tcl_precision 17
1744	set xr [expr $xmax - $xmin]
1745	set yr [expr $ymax - $ymin]
1746	set vr [expr $vmax - $vmin]
1747	set r [expr ($yr > $xr) ? $yr : $xr]
1748	if { $vr < 1.0e-17 } {
1749	set dataScale 1.0
1750	} else {
1751	set dataScale [expr $r / $vr]
1752	}
1753	set heightScale [GetHeightmapScale]
1754	set bmin [expr $heightScale * $dataScale * $vmin]
1755	set bmax [expr $heightScale * $dataScale * $vmax]
1756	if {$heightScale > 0} {
1757	set zpos [expr - $bmin]
1758	SendCmd "heightmap pos 0 0 $zpos"
1759	} else {
1760	SendCmd "heightmap pos 0 0 0"
1761	}
1762	set bmax [expr $bmax - $bmin]
1763	set bmin 0
1764	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1765	SendCmd "axis bounds z $bmin $bmax"
1766	SendCmd "axis range z $_limits($_curFldName)"
1767	}
1768
1769	#
1770	# SetCurrentColormap --
1771	#
1772	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1773	# Keep track of the colormaps that we build.
1774	if { $name != "none" && ![info exists _colormaps($name)] } {
1775	BuildColormap $name
1776	set _colormaps($name) 1
1777	}
1778	set _currentColormap $name
1779	SendCmd "heightmap colormap $_currentColormap"
1780	}
1781
1782	#
1783	# BuildColormap --
1784	#
1785	# Build the designated colormap on the server.
1786	#
1787	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1788	set cmap [ColorsToColormap $name]
1789	if { [llength $cmap] == 0 } {
1790	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1791	}
1792	set wmap "0.0 1.0 1.0 1.0"
1793	SendCmd "colormap add $name { $cmap } { $wmap }"
1794	}
1795
1796	# ----------------------------------------------------------------------
1797	# CONFIGURATION OPTION: -mode
1798	# ----------------------------------------------------------------------
1799	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1800	switch -- $itk_option(-mode) {
1801	"heightmap" {
1802	set _settings(-isheightmap) 1
1803	}
1804	"contour" {
1805	set _settings(-isheightmap) 0
1806	}
1807	default {
1808	error "unknown mode settings \"$itk_option(-mode)\""
1809	}
1810	}
1811	if { !$_reset } {
1812	AdjustSetting -isheightmap
1813	}
1814	}
1815
1816	# ----------------------------------------------------------------------
1817	# CONFIGURATION OPTION: -plotbackground
1818	# ----------------------------------------------------------------------
1819	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1820	if { [isconnected] } {
1821	set rgb [Color2RGB $itk_option(-plotbackground)]
1822	if { !$_reset } {
1823	SendCmd "screen bgcolor $rgb"
1824	}
1825	$itk_component(view) configure -background $itk_option(-plotbackground)
1826	}
1827	}
1828
1829	# ----------------------------------------------------------------------
1830	# CONFIGURATION OPTION: -plotforeground
1831	# ----------------------------------------------------------------------
1832	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1833	if { [isconnected] } {
1834	set rgb [Color2RGB $itk_option(-plotforeground)]
1835	if { !$_reset } {
1836	SendCmd "axis color all $rgb"
1837	SendCmd "outline color $rgb"
1838	}
1839	}
1840	}
1841
1842	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1843
1844	set fg [option get $itk_component(hull) font Font]
1845	#set bfg [option get $itk_component(hull) boldFont Font]
1846
1847	set inner [$itk_component(main) insert end \
1848	-title "Contour/Surface Settings" \
1849	-icon [Rappture::icon contour2]]
1850	$inner configure -borderwidth 4
1851
1852	checkbutton $inner.legend \
1853	-text "Legend" \
1854	-variable [itcl::scope _settings(-legendvisible)] \
1855	-command [itcl::code $this AdjustSetting -legendvisible] \
1856	-font "Arial 9"
1857
1858	checkbutton $inner.wireframe \
1859	-text "Wireframe" \
1860	-variable [itcl::scope _settings(-wireframe)] \
1861	-command [itcl::code $this AdjustSetting -wireframe] \
1862	-font "Arial 9"
1863
1864	itk_component add lighting {
1865	checkbutton $inner.lighting \
1866	-text "Enable Lighting" \
1867	-variable [itcl::scope _settings(-lighting)] \
1868	-command [itcl::code $this AdjustSetting -lighting] \
1869	-font "Arial 9"
1870	} {
1871	ignore -font
1872	}
1873	checkbutton $inner.edges \
1874	-text "Edges" \
1875	-variable [itcl::scope _settings(-edges)] \
1876	-command [itcl::code $this AdjustSetting -edges] \
1877	-font "Arial 9"
1878
1879	itk_component add outline {
1880	checkbutton $inner.outline \
1881	-text "Outline" \
1882	-variable [itcl::scope _settings(-outline)] \
1883	-command [itcl::code $this AdjustSetting -outline] \
1884	-font "Arial 9"
1885	} {
1886	ignore -font
1887	}
1888	checkbutton $inner.stretch \
1889	-text "Stretch to fit" \
1890	-variable [itcl::scope _settings(-stretchtofit)] \
1891	-command [itcl::code $this AdjustSetting -stretchtofit] \
1892	-font "Arial 9"
1893
1894	checkbutton $inner.isolines \
1895	-text "Isolines" \
1896	-variable [itcl::scope _settings(-isolinesvisible)] \
1897	-command [itcl::code $this AdjustSetting -isolinesvisible] \
1898	-font "Arial 9"
1899
1900	checkbutton $inner.colormapDiscrete \
1901	-text "Discrete Colormap" \
1902	-variable [itcl::scope _settings(-colormapdiscrete)] \
1903	-command [itcl::code $this AdjustSetting -colormapdiscrete] \
1904	-font "Arial 9"
1905
1906	itk_component add field_l {
1907	label $inner.field_l -text "Field" -font "Arial 9"
1908	} {
1909	ignore -font
1910	}
1911	itk_component add field {
1912	Rappture::Combobox $inner.field -width 10 -editable no
1913	}
1914	bind $inner.field <<Value>> \
1915	[itcl::code $this AdjustSetting -field]
1916
1917	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1918	itk_component add colormap {
1919	Rappture::Combobox $inner.colormap -width 10 -editable no
1920	}
1921	$inner.colormap choices insert end [GetColormapList -includeNone]
1922	$itk_component(colormap) value $_settings(-colormap)
1923	bind $inner.colormap <<Value>> \
1924	[itcl::code $this AdjustSetting -colormap]
1925
1926	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1927	itk_component add isolinecolor {
1928	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1929	}
1930	$inner.isolinecolor choices insert end \
1931	"black" "black" \
1932	"blue" "blue" \
1933	"cyan" "cyan" \
1934	"green" "green" \
1935	"grey" "grey" \
1936	"magenta" "magenta" \
1937	"orange" "orange" \
1938	"red" "red" \
1939	"white" "white" \
1940	"none" "none"
1941
1942	$itk_component(isolinecolor) value $_settings(-isolinecolor)
1943	bind $inner.isolinecolor <<Value>> \
1944	[itcl::code $this AdjustSetting -isolinecolor]
1945
1946	label $inner.background_l -text "Background Color" -font "Arial 9"
1947	itk_component add background {
1948	Rappture::Combobox $inner.background -width 10 -editable no
1949	}
1950	$inner.background choices insert end \
1951	"black" "black" \
1952	"white" "white" \
1953	"grey" "grey"
1954
1955	$itk_component(background) value "white"
1956	bind $inner.background <<Value>> \
1957	[itcl::code $this AdjustSetting -background]
1958
1959	itk_component add opacity_l {
1960	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1961	} {
1962	ignore -font
1963	}
1964	itk_component add opacity {
1965	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1966	-variable [itcl::scope _settings(-opacity)] \
1967	-showvalue off \
1968	-command [itcl::code $this AdjustSetting -opacity]
1969	}
1970	itk_component add scale_l {
1971	label $inner.scale_l -text "Scale" -font "Arial 9"
1972	} {
1973	ignore -font
1974	}
1975	itk_component add scale {
1976	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1977	-variable [itcl::scope _settings(-heightmapscale)] \
1978	-showvalue off \
1979	-command [itcl::code $this AdjustSetting -heightmapscale]
1980	}
1981	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1982	itk_component add numisolines {
1983	Rappture::Spinint $inner.numisolines \
1984	-min 0 -max 50 -font "arial 9"
1985	}
1986	$itk_component(numisolines) value $_settings(-numisolines)
1987	bind $itk_component(numisolines) <<Value>> \
1988	[itcl::code $this AdjustSetting -numisolines]
1989
1990	frame $inner.separator1 -height 2 -relief sunken -bd 1
1991	frame $inner.separator2 -height 2 -relief sunken -bd 1
1992
1993	blt::table $inner \
1994	0,0 $inner.field_l -anchor w -pady 2 \
1995	0,1 $inner.field -anchor w -pady 2 -fill x \
1996	1,0 $inner.colormap_l -anchor w -pady 2 \
1997	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1998	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
1999	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
2000	3,0 $inner.background_l -anchor w -pady 2 \
2001	3,1 $inner.background -anchor w -pady 2 -fill x \
2002	4,0 $inner.numisolines_l -anchor w -pady 2 \
2003	4,1 $inner.numisolines -anchor w -pady 2 \
2004	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
2005	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
2006	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
2007	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
2008	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
2009	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
2010	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
2011	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
2012	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
2013	14,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
2014	15,0 $inner.opacity_l -anchor w -pady 2 \
2015	15,1 $inner.opacity -fill x -pady 2 \
2016	16,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
2017	16,1 $inner.scale -fill x -pady 2 -cspan 2 \
2018
2019	blt::table configure $inner r* c* -resize none
2020	blt::table configure $inner r17 c1 -resize expand
2021	}
2022
2023	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
2024
2025	set fg [option get $itk_component(hull) font Font]
2026	#set bfg [option get $itk_component(hull) boldFont Font]
2027
2028	set inner [$itk_component(main) insert end \
2029	-title "Axis Settings" \
2030	-icon [Rappture::icon axis2]]
2031	$inner configure -borderwidth 4
2032
2033	checkbutton $inner.visible \
2034	-text "Axes" \
2035	-variable [itcl::scope _settings(-axisvisible)] \
2036	-command [itcl::code $this AdjustSetting -axisvisible] \
2037	-font "Arial 9"
2038	checkbutton $inner.labels \
2039	-text "Axis Labels" \
2040	-variable [itcl::scope _settings(-axislabels)] \
2041	-command [itcl::code $this AdjustSetting -axislabels] \
2042	-font "Arial 9"
2043	label $inner.grid_l -text "Grid" -font "Arial 9"
2044	checkbutton $inner.xgrid \
2045	-text "X" \
2046	-variable [itcl::scope _settings(-xgrid)] \
2047	-command [itcl::code $this AdjustSetting -xgrid] \
2048	-font "Arial 9"
2049	checkbutton $inner.ygrid \
2050	-text "Y" \
2051	-variable [itcl::scope _settings(-ygrid)] \
2052	-command [itcl::code $this AdjustSetting -ygrid] \
2053	-font "Arial 9"
2054	checkbutton $inner.zgrid \
2055	-text "Z" \
2056	-variable [itcl::scope _settings(-zgrid)] \
2057	-command [itcl::code $this AdjustSetting -zgrid] \
2058	-font "Arial 9"
2059	checkbutton $inner.minorticks \
2060	-text "Minor Ticks" \
2061	-variable [itcl::scope _settings(-axisminorticks)] \
2062	-command [itcl::code $this AdjustSetting -axisminorticks] \
2063	-font "Arial 9"
2064
2065	label $inner.mode_l -text "Mode" -font "Arial 9"
2066
2067	itk_component add axisflymode {
2068	Rappture::Combobox $inner.mode -width 10 -editable no
2069	}
2070	$inner.mode choices insert end \
2071	"static_triad" "static" \
2072	"closest_triad" "closest" \
2073	"furthest_triad" "farthest" \
2074	"outer_edges" "outer"
2075	$itk_component(axisflymode) value $_settings(-axisflymode)
2076	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
2077
2078	blt::table $inner \
2079	0,0 $inner.visible -anchor w -cspan 4 \
2080	1,0 $inner.labels -anchor w -cspan 4 \
2081	2,0 $inner.minorticks -anchor w -cspan 4 \
2082	4,0 $inner.grid_l -anchor w \
2083	4,1 $inner.xgrid -anchor w \
2084	4,2 $inner.ygrid -anchor w \
2085	4,3 $inner.zgrid -anchor w \
2086	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2087	5,1 $inner.mode -fill x -cspan 3
2088
2089	blt::table configure $inner r* c* -resize none
2090	blt::table configure $inner r7 c6 -resize expand
2091	blt::table configure $inner r3 -height 0.125i
2092	}
2093
2094	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2095	set inner [$itk_component(main) insert end \
2096	-title "Camera Settings" \
2097	-icon [Rappture::icon camera]]
2098	$inner configure -borderwidth 4
2099
2100	label $inner.view_l -text "view" -font "Arial 9"
2101	set f [frame $inner.view]
2102	foreach side { front back left right top bottom } {
2103	button $f.$side -image [Rappture::icon view$side] \
2104	-command [itcl::code $this SetOrientation $side]
2105	Rappture::Tooltip::for $f.$side "Change the view to $side"
2106	pack $f.$side -side left
2107	}
2108
2109	blt::table $inner \
2110	0,0 $inner.view_l -anchor e -pady 2 \
2111	0,1 $inner.view -anchor w -pady 2
2112	blt::table configure $inner r0 -resize none
2113
2114	set labels { qx qy qz qw xpan ypan zoom }
2115	set row 1
2116	foreach tag $labels {
2117	label $inner.${tag}label -text $tag -font "Arial 9"
2118	entry $inner.${tag} -font "Arial 9" -bg white \
2119	-textvariable [itcl::scope _view(-$tag)]
2120	bind $inner.${tag} <Return> \
2121	[itcl::code $this camera set -${tag}]
2122	bind $inner.${tag} <KP_Enter> \
2123	[itcl::code $this camera set -${tag}]
2124	blt::table $inner \
2125	$row,0 $inner.${tag}label -anchor e -pady 2 \
2126	$row,1 $inner.${tag} -anchor w -pady 2
2127	blt::table configure $inner r$row -resize none
2128	incr row
2129	}
2130	checkbutton $inner.ortho \
2131	-text "Orthographic Projection" \
2132	-variable [itcl::scope _view(-ortho)] \
2133	-command [itcl::code $this camera set -ortho] \
2134	-font "Arial 9"
2135	blt::table $inner \
2136	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2137	blt::table configure $inner r$row -resize none
2138	incr row
2139
2140	blt::table configure $inner c* -resize none
2141	blt::table configure $inner c2 -resize expand
2142	blt::table configure $inner r$row -resize expand
2143	}
2144
2145	#
2146	# camera --
2147	#
2148	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2149	switch -- $option {
2150	"show" {
2151	puts [array get _view]
2152	}
2153	"set" {
2154	set what [lindex $args 0]
2155	set x $_view($what)
2156	set code [catch { string is double $x } result]
2157	if { $code != 0 \|\| !$result } {
2158	return
2159	}
2160	switch -- $what {
2161	"-ortho" {
2162	if {$_view($what)} {
2163	SendCmd "camera mode ortho"
2164	} else {
2165	SendCmd "camera mode persp"
2166	}
2167	}
2168	"-xpan" - "-ypan" {
2169	PanCamera
2170	}
2171	"-qx" - "-qy" - "-qz" - "-qw" {
2172	set q [ViewToQuaternion]
2173	$_arcball quaternion $q
2174	EventuallyRotate $q
2175	}
2176	"-zoom" {
2177	SendCmd "camera zoom $_view($what)"
2178	}
2179	}
2180	}
2181	}
2182	}
2183
2184	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2185	set bytes ""
2186	foreach dataobj [get] {
2187	foreach comp [$dataobj components] {
2188	set tag $dataobj-$comp
2189	set contents [$dataobj vtkdata $comp]
2190	append bytes "$contents\n"
2191	}
2192	}
2193	return [list .vtk $bytes]
2194	}
2195
2196	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2197	if { [image width $_image(download)] > 0 &&
2198	[image height $_image(download)] > 0 } {
2199	set bytes [$_image(download) data -format "jpeg -quality 100"]
2200	set bytes [Rappture::encoding::decode -as b64 $bytes]
2201	return [list .jpg $bytes]
2202	}
2203	return ""
2204	}
2205
2206	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2207	Rappture::Balloon $popup \
2208	-title "[Rappture::filexfer::label downloadWord] as..."
2209	set inner [$popup component inner]
2210	label $inner.summary -text "" -anchor w
2211	radiobutton $inner.vtk_button -text "VTK data file" \
2212	-variable [itcl::scope _downloadPopup(format)] \
2213	-font "Arial 9 " \
2214	-value vtk
2215	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2216	radiobutton $inner.image_button -text "Image File" \
2217	-variable [itcl::scope _downloadPopup(format)] \
2218	-font "Arial 9 " \
2219	-value image
2220	Rappture::Tooltip::for $inner.image_button \
2221	"Save as digital image."
2222
2223	button $inner.ok -text "Save" \
2224	-highlightthickness 0 -pady 2 -padx 3 \
2225	-command $command \
2226	-compound left \
2227	-image [Rappture::icon download]
2228
2229	button $inner.cancel -text "Cancel" \
2230	-highlightthickness 0 -pady 2 -padx 3 \
2231	-command [list $popup deactivate] \
2232	-compound left \
2233	-image [Rappture::icon cancel]
2234
2235	blt::table $inner \
2236	0,0 $inner.summary -cspan 2 \
2237	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2238	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2239	4,1 $inner.cancel -width .9i -fill y \
2240	4,0 $inner.ok -padx 2 -width .9i -fill y
2241	blt::table configure $inner r3 -height 4
2242	blt::table configure $inner r4 -pady 4
2243	raise $inner.image_button
2244	$inner.vtk_button invoke
2245	return $inner
2246	}
2247
2248	#
2249	# SetObjectStyle --
2250	#
2251	# Set the style of the heightmap/contour object. This gets calls
2252	# for each dataset once as it is loaded. It can overridden by
2253	# the user controls.
2254	#
2255	#
2256	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2257	# Parse style string.
2258	set tag $dataobj-$comp
2259	array set style {
2260	-color BCGYR
2261	-levels 10
2262	-opacity 1.0
2263	}
2264	set stylelist [$dataobj style $comp]
2265	if { $stylelist != "" } {
2266	array set style $stylelist
2267	}
2268	# This is too complicated. We want to set the colormap, number of
2269	# isolines and opacity for the dataset. They can be the default values,
2270	# the style hints loaded with the dataset, or set by user controls. As
2271	# datasets get loaded, they first use the defaults that are overidden
2272	# by the style hints. If the user changes the global controls, then that
2273	# overrides everything else. I don't know what it means when global
2274	# controls are specified as style hints by each dataset. It complicates
2275	# the code to handle aberrant cases.
2276
2277	if { $_changed(-opacity) } {
2278	set style(-opacity) [expr $_settings(-opacity) * 0.01]
2279	}
2280	if { $_changed(-numisolines) } {
2281	set style(-levels) $_settings(-numisolines)
2282	}
2283	if { $_changed(-colormap) } {
2284	set style(-color) $_settings(-colormap)
2285	}
2286	if { $_currentColormap == "" } {
2287	$itk_component(colormap) value $style(-color)
2288	}
2289	if { [info exists style(-stretchtofit)] } {
2290	set _settings(-stretchtofit) $style(-stretchtofit)
2291	AdjustSetting -stretchtofit
2292	}
2293	if { $_currentNumIsolines != $style(-levels) } {
2294	set _currentNumIsolines $style(-levels)
2295	set _settings(-numisolines) $_currentNumIsolines
2296	$itk_component(numisolines) value $_currentNumIsolines
2297	UpdateContourList
2298	DrawLegend
2299	}
2300	SendCmd "outline add $tag"
2301	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2302	SendCmd "outline visible $_settings(-outline) $tag"
2303	set scale [GetHeightmapScale]
2304	SendCmd "[list heightmap add contourlist $_contourList $scale $tag]"
2305	set _comp2scale($tag) $_settings(-heightmapscale)
2306	SendCmd "heightmap edges $_settings(-edges) $tag"
2307	SendCmd "heightmap wireframe $_settings(-wireframe) $tag"
2308	SetCurrentColormap $style(-color)
2309	set color [$itk_component(isolinecolor) value]
2310	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2311	SendCmd "heightmap lighting $_settings(-isheightmap) $tag"
2312	SendCmd "heightmap isolines $_settings(-isolinesvisible) $tag"
2313	SendCmd "heightmap surface $_settings(-colormapvisible) $tag"
2314	SendCmd "heightmap opacity $style(-opacity) $tag"
2315	set _settings(-opacity) [expr $style(-opacity) * 100.0]
2316	}
2317
2318	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2319	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2320	return 0
2321	}
2322	return 1
2323	}
2324
2325	# ----------------------------------------------------------------------
2326	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2327	#
2328	# Invoked automatically whenever the "legend" command comes in from
2329	# the rendering server. Indicates that binary image data with the
2330	# specified <size> will follow.
2331	# ----------------------------------------------------------------------
2332	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2333	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2334	if { [isconnected] } {
2335	set bytes [ReceiveBytes $size]
2336	if { ![info exists _image(legend)] } {
2337	set _image(legend) [image create photo]
2338	}
2339	$_image(legend) configure -data $bytes
2340	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2341	if { [catch {DrawLegend} errs] != 0 } {
2342	global errorInfo
2343	puts stderr "errs=$errs errorInfo=$errorInfo"
2344	}
2345	}
2346	}
2347
2348	#
2349	# DrawLegend --
2350	#
2351	# Draws the legend in the own canvas on the right side of the plot area.
2352	#
2353	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2354	set fname $_curFldName
2355	set c $itk_component(view)
2356	set w [winfo width $c]
2357	set h [winfo height $c]
2358	set font "Arial 8"
2359	set lineht [font metrics $font -linespace]
2360
2361	if { [string match "component*" $fname] } {
2362	set title ""
2363	} else {
2364	if { [info exists _fields($fname)] } {
2365	foreach { title units } $_fields($fname) break
2366	if { $units != "" } {
2367	set title [format "%s (%s)" $title $units]
2368	}
2369	} else {
2370	set title $fname
2371	}
2372	}
2373	set x [expr $w - 2]
2374	if { !$_settings(-legendvisible) } {
2375	$c delete legend
2376	return
2377	}
2378	if { [$c find withtag "legend"] == "" } {
2379	set y 2
2380	# If there's a legend title, create a text item for the title.
2381	$c create text $x $y \
2382	-anchor ne \
2383	-fill $itk_option(-plotforeground) -tags "title legend" \
2384	-font $font
2385	if { $title != "" } {
2386	incr y $lineht
2387	}
2388	$c create text $x $y \
2389	-anchor ne \
2390	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2391	-font $font
2392	incr y $lineht
2393	$c create image $x $y \
2394	-anchor ne \
2395	-image $_image(legend) -tags "colormap legend"
2396	$c create rectangle $x $y 1 1 \
2397	-fill "" -outline "" -tags "sensor legend"
2398	$c create text $x [expr {$h-2}] \
2399	-anchor se \
2400	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2401	-font $font
2402	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2403	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2404	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2405	}
2406	$c delete isoline
2407	set x2 $x
2408	set iw [image width $_image(legend)]
2409	set ih [image height $_image(legend)]
2410	set x1 [expr $x2 - ($iw*12)/10]
2411	set color [$itk_component(isolinecolor) value]
2412
2413	# Draw the isolines on the legend.
2414	array unset _isolines
2415	if { $color != "none" && [info exists _limits($_curFldName)] &&
2416	$_settings(-isolinesvisible) && $_currentNumIsolines > 0 } {
2417
2418	foreach { vmin vmax } $_limits($_curFldName) break
2419	set range [expr double($vmax - $vmin)]
2420	if { $range <= 0.0 } {
2421	set range 1.0; # Min is greater or equal to max.
2422	}
2423	set tags "isoline legend"
2424	set offset [expr 2 + $lineht]
2425	if { $title != "" } {
2426	incr offset $lineht
2427	}
2428	foreach value $_contourList {
2429	set norm [expr 1.0 - (($value - $vmin) / $range)]
2430	set y1 [expr int(round(($norm * $ih) + $offset))]
2431	for { set off 0 } { $off < 3 } { incr off } {
2432	set _isolines([expr $y1 + $off]) $value
2433	set _isolines([expr $y1 - $off]) $value
2434	}
2435	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2436	}
2437	}
2438
2439	$c bind title <ButtonPress> [itcl::code $this Combo post]
2440	$c bind title <Enter> [itcl::code $this Combo activate]
2441	$c bind title <Leave> [itcl::code $this Combo deactivate]
2442	# Reset the item coordinates according the current size of the plot.
2443	if { [info exists _limits($_curFldName)] } {
2444	foreach { vmin vmax } $_limits($_curFldName) break
2445	$c itemconfigure vmin -text [format %g $vmin]
2446	$c itemconfigure vmax -text [format %g $vmax]
2447	}
2448	set y 2
2449	# If there's a legend title, move the title to the correct position
2450	if { $title != "" } {
2451	$c itemconfigure title -text $title
2452	$c coords title $x $y
2453	incr y $lineht
2454	}
2455	$c coords vmax $x $y
2456	incr y $lineht
2457	$c coords colormap $x $y
2458	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2459	$c raise sensor
2460	$c coords vmin $x [expr {$h - 2}]
2461	}
2462
2463	#
2464	# EnterLegend --
2465	#
2466	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2467	SetLegendTip $x $y
2468	}
2469
2470	#
2471	# MotionLegend --
2472	#
2473	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2474	Rappture::Tooltip::tooltip cancel
2475	set c $itk_component(view)
2476	set cw [winfo width $c]
2477	set ch [winfo height $c]
2478	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2479	SetLegendTip $x $y
2480	}
2481	}
2482
2483	#
2484	# LeaveLegend --
2485	#
2486	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2487	Rappture::Tooltip::tooltip cancel
2488	.rappturetooltip configure -icon ""
2489	}
2490
2491	#
2492	# SetLegendTip --
2493	#
2494	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2495	set fname $_curFldName
2496	set c $itk_component(view)
2497	set w [winfo width $c]
2498	set h [winfo height $c]
2499	set font "Arial 8"
2500	set lineht [font metrics $font -linespace]
2501
2502	set ih [image height $_image(legend)]
2503	# Subtract off the offset of the color ramp from the top of the canvas
2504	set iy [expr $y - ($lineht + 2)]
2505
2506	if { [string match "component*" $fname] } {
2507	set title ""
2508	} else {
2509	if { [info exists _fields($fname)] } {
2510	foreach { title units } $_fields($fname) break
2511	if { $units != "" } {
2512	set title [format "%s (%s)" $title $units]
2513	}
2514	} else {
2515	set title $fname
2516	}
2517	}
2518	# If there's a legend title, increase the offset by the line height.
2519	if { $title != "" } {
2520	incr iy -$lineht
2521	}
2522
2523	# Make a swatch of the selected color
2524	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2525	return
2526	}
2527
2528	if { ![info exists _image(swatch)] } {
2529	set _image(swatch) [image create photo -width 24 -height 24]
2530	}
2531	set color [eval format "\#%02x%02x%02x" $pixel]
2532	$_image(swatch) put black -to 0 0 23 23
2533	$_image(swatch) put $color -to 1 1 22 22
2534
2535	# Compute the value of the point
2536	if { [info exists _limits($fname)] } {
2537	foreach { vmin vmax } $_limits($fname) break
2538	set t [expr 1.0 - (double($iy) / double($ih-1))]
2539	set value [expr $t * ($vmax - $vmin) + $vmin]
2540	} else {
2541	set value 0.0
2542	}
2543	set tipx [expr $x + 15]
2544	set tipy [expr $y - 5]
2545	.rappturetooltip configure -icon $_image(swatch)
2546	if { [info exists _isolines($y)] } {
2547	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2548	} else {
2549	Rappture::Tooltip::text $c [format "$title %g" $value]
2550	}
2551	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2552	}
2553
2554	# ----------------------------------------------------------------------
2555	# USAGE: _dropdown post
2556	# USAGE: _dropdown unpost
2557	# USAGE: _dropdown select
2558	#
2559	# Used internally to handle the dropdown list for this combobox. The
2560	# post/unpost options are invoked when the list is posted or unposted
2561	# to manage the relief of the controlling button. The select option
2562	# is invoked whenever there is a selection from the list, to assign
2563	# the value back to the gauge.
2564	# ----------------------------------------------------------------------
2565	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2566	set c $itk_component(view)
2567	switch -- $option {
2568	post {
2569	foreach { x1 y1 x2 y2 } [$c bbox title] break
2570	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2571	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2572	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2573	tk_popup $itk_component(fieldmenu) $x $y
2574	}
2575	activate {
2576	$c itemconfigure title -fill red
2577	}
2578	deactivate {
2579	$c itemconfigure title -fill $itk_option(-plotforeground)
2580	}
2581	invoke {
2582	$itk_component(field) value $_curFldLabel
2583	AdjustSetting -field
2584	}
2585	default {
2586	error "bad option \"$option\": should be post, unpost, select"
2587	}
2588	}
2589	}
2590
2591	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2592	if { $_settings(-isheightmap) } {
2593	set val $_settings(-heightmapscale)
2594	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2595	return $sval
2596	}
2597	return 0
2598	}
2599
2600	itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2601	array set positions {
2602	front "0.707107 0.707107 0 0"
2603	back "0 0 0.707107 0.707107"
2604	left "0.5 0.5 -0.5 -0.5"
2605	right "0.5 0.5 0.5 0.5"
2606	top "1 0 0 0"
2607	bottom "0 1 0 0"
2608	}
2609	foreach name { -qw -qx -qy -qz } value $positions($side) {
2610	set _view($name) $value
2611	}
2612	set q [ViewToQuaternion]
2613	$_arcball quaternion $q
2614	SendCmd "camera orient $q"
2615	SendCmd "camera reset"
2616	set _view(-xpan) 0
2617	set _view(-ypan) 0
2618	set _view(-zoom) 1.0
2619	}
2620
2621	itcl::body Rappture::VtkHeightmapViewer::UpdateContourList {} {
2622	if {$_currentNumIsolines == 0} {
2623	set _contourList ""
2624	return
2625	}
2626	if { ![info exists _limits($_curFldName)] } {
2627	return
2628	}
2629	foreach { vmin vmax } $_limits($_curFldName) break
2630	set v [blt::vector create \#auto]
2631	$v seq $vmin $vmax [expr $_currentNumIsolines+2]
2632	$v delete end 0
2633	set _contourList [$v range 0 end]
2634	blt::vector destroy $v
2635	}

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