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source: branches/r9/gui/scripts/vtkheightmapviewer.tcl @ 4919

Last change on this file since 4919 was 4919, checked in by gah, 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 $env(SESSION)
768	}
769	lappend info "version" "$Rappture::version"
770	lappend info "build" "$Rappture::build"
771	lappend info "svnurl" "$Rappture::svnurl"
772	lappend info "installdir" "$Rappture::installdir"
773	lappend info "hub" [exec hostname]
774	lappend info "client" "vtkheightmapviewer"
775	lappend info "user" $user
776	lappend info "session" $session
777	SendCmd "clientinfo [list $info]"
778	}
779	set w [winfo width $itk_component(view)]
780	set h [winfo height $itk_component(view)]
781	EventuallyResize $w $h
782	}
783	return $result
784	}
785
786	#
787	# isconnected --
788	#
789	# Indicates if we are currently connected to the visualization server.
790	#
791	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
792	return [VisViewer::IsConnected]
793	}
794
795	#
796	# disconnect --
797	#
798	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
799	Disconnect
800	set _reset 1
801	}
802
803	#
804	# Disconnect --
805	#
806	# Clients use this method to disconnect from the current rendering
807	# server.
808	#
809	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
810	VisViewer::Disconnect
811
812	$_dispatcher cancel !rebuild
813	$_dispatcher cancel !resize
814	$_dispatcher cancel !rotate
815	$_dispatcher cancel !legend
816	# disconnected -- no more data sitting on server
817	array unset _datasets
818	array unset _data
819	array unset _colormaps
820	array unset _obj2datasets
821	global readyForNextFrame
822	set readyForNextFrame 1
823	}
824
825	# ----------------------------------------------------------------------
826	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
827	#
828	# Invoked automatically whenever the "image" command comes in from
829	# the rendering server. Indicates that binary image data with the
830	# specified <size> will follow.
831	# ----------------------------------------------------------------------
832	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
833	global readyForNextFrame
834	set readyForNextFrame 1
835	array set info {
836	-token "???"
837	-bytes 0
838	-type image
839	}
840	array set info $args
841	set bytes [ReceiveBytes $info(-bytes)]
842	if { $info(-type) == "image" } {
843	if 0 {
844	set f [open "last.ppm" "w"]
845	puts $f $bytes
846	close $f
847	}
848	$_image(plot) configure -data $bytes
849	set time [clock seconds]
850	set date [clock format $time]
851	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
852	if { $_start > 0 } {
853	set finish [clock clicks -milliseconds]
854	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
855	set _start 0
856	}
857	} elseif { $info(type) == "print" } {
858	set tag $this-print-$info(-token)
859	set _hardcopy($tag) $bytes
860	}
861	}
862
863	#
864	# ReceiveDataset --
865	#
866	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
867	if { ![isconnected] } {
868	return
869	}
870	set option [lindex $args 0]
871	switch -- $option {
872	"scalar" {
873	set option [lindex $args 1]
874	switch -- $option {
875	"world" {
876	foreach { x y z value tag } [lrange $args 2 end] break
877	}
878	"pixel" {
879	foreach { x y value tag } [lrange $args 2 end] break
880	}
881	}
882	}
883	"vector" {
884	set option [lindex $args 1]
885	switch -- $option {
886	"world" {
887	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
888	}
889	"pixel" {
890	foreach { x y vx vy vz tag } [lrange $args 2 end] break
891	}
892	}
893	}
894	"names" {
895	foreach { name } [lindex $args 1] {
896	#puts stderr "Dataset: $name"
897	}
898	}
899	default {
900	error "unknown dataset option \"$option\" from server"
901	}
902	}
903	}
904
905	# ----------------------------------------------------------------------
906	# USAGE: Rebuild
907	#
908	# Called automatically whenever something changes that affects the
909	# data in the widget. Clears any existing data and rebuilds the
910	# widget to display new data.
911	# ----------------------------------------------------------------------
912	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
913	set w [winfo width $itk_component(view)]
914	set h [winfo height $itk_component(view)]
915	if { $w < 2 \|\| $h < 2 } {
916	$_dispatcher event -idle !rebuild
917	return
918	}
919
920	# Turn on buffering of commands to the server. We don't want to
921	# be preempted by a server disconnect/reconnect (which automatically
922	# generates a new call to Rebuild).
923	StartBufferingCommands
924
925	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
926	set _width $w
927	set _height $h
928	$_arcball resize $w $h
929	DoResize
930	if { $_settings(-stretchtofit) } {
931	AdjustSetting -stretchtofit
932	}
933	}
934	if { $_reset } {
935	#
936	# Reset the camera and other view parameters
937	#
938	InitSettings -isheightmap -background
939
940	# Setting a custom exponent and label format for axes is causing
941	# a problem with rounding. Near zero ticks aren't rounded by
942	# the %g format. The VTK CubeAxes seem to currently work best
943	# when allowed to automatically set the exponent and precision
944	# based on the axis ranges. This does tend to result in less
945	# visual clutter, so I think it is best to use the automatic
946	# settings by default. We can test more fine-grained
947	# controls on the axis settings tab if necessary.
948	# -Leif
949	#SendCmd "axis exp 0 0 0 1"
950
951	SendCmd "axis lrot z 90"
952	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
953	$_arcball quaternion $q
954	if {$_settings(-isheightmap) } {
955	if { $_view(ortho)} {
956	SendCmd "camera mode ortho"
957	} else {
958	SendCmd "camera mode persp"
959	}
960	DoRotate
961	SendCmd "camera reset"
962	}
963	PanCamera
964	StopBufferingCommands
965	SendCmd "imgflush"
966	StartBufferingCommands
967	}
968
969	set _first ""
970	# Start off with no datasets are visible.
971	SendCmd "dataset visible 0"
972	set scale [GetHeightmapScale]
973	foreach dataobj [get -objects] {
974	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
975	set _first $dataobj
976	}
977	set _obj2datasets($dataobj) ""
978	foreach comp [$dataobj components] {
979	set tag $dataobj-$comp
980	if { ![info exists _datasets($tag)] } {
981	set bytes [$dataobj vtkdata $comp]
982	if 0 {
983	set f [open /tmp/vtkheightmap.vtk "w"]
984	puts $f $bytes
985	close $f
986	}
987	set length [string length $bytes]
988	if { $_reportClientInfo } {
989	set info {}
990	lappend info "tool_id" [$dataobj hints toolId]
991	lappend info "tool_name" [$dataobj hints toolName]
992	lappend info "tool_version" [$dataobj hints toolRevision]
993	lappend info "tool_title" [$dataobj hints toolTitle]
994	lappend info "dataset_label" [$dataobj hints label]
995	lappend info "dataset_size" $length
996	lappend info "dataset_tag" $tag
997	SendCmd [list "clientinfo" $info]
998	}
999	SendCmd "dataset add $tag data follows $length"
1000	append _outbuf $bytes
1001	set _datasets($tag) 1
1002	SetObjectStyle $dataobj $comp
1003	}
1004	lappend _obj2datasets($dataobj) $tag
1005	if { [info exists _obj2ovride($dataobj-raise)] } {
1006	# Setting dataset visible enables outline
1007	# and heightmap
1008	SendCmd "dataset visible 1 $tag"
1009	}
1010	if { ![info exists _comp2scale($tag)] \|\|
1011	$_comp2scale($tag) != $scale } {
1012	SendCmd "heightmap heightscale $scale $tag"
1013	set _comp2scale($tag) $scale
1014	}
1015	}
1016	}
1017	if { $_first != "" } {
1018	$itk_component(field) choices delete 0 end
1019	$itk_component(fieldmenu) delete 0 end
1020	array unset _fields
1021	set _curFldName ""
1022	foreach cname [$_first components] {
1023	foreach fname [$_first fieldnames $cname] {
1024	if { [info exists _fields($fname)] } {
1025	continue
1026	}
1027	foreach { label units components } \
1028	[$_first fieldinfo $fname] break
1029	$itk_component(field) choices insert end "$fname" "$label"
1030	$itk_component(fieldmenu) add radiobutton -label "$label" \
1031	-value $label -variable [itcl::scope _curFldLabel] \
1032	-selectcolor red \
1033	-activebackground $itk_option(-plotbackground) \
1034	-activeforeground $itk_option(-plotforeground) \
1035	-font "Arial 8" \
1036	-command [itcl::code $this Combo invoke]
1037	set _fields($fname) [list $label $units $components]
1038	if { $_curFldName == "" } {
1039	set _curFldName $fname
1040	set _curFldLabel $label
1041	}
1042	}
1043	}
1044	$itk_component(field) value $_curFldLabel
1045	}
1046	InitSettings -stretchtofit -outline
1047
1048	if { $_reset } {
1049	SendCmd "axis tickpos outside"
1050	foreach axis { x y z } {
1051	SendCmd "axis lformat $axis %g"
1052	}
1053
1054	foreach axis { x y z } {
1055	if { $axis == "z" } {
1056	set label [$_first hints label]
1057	} else {
1058	set label [$_first hints ${axis}label]
1059	}
1060	if { $label == "" } {
1061	if {$axis == "z"} {
1062	if { [string match "component*" $_curFldName] } {
1063	set label [string toupper $axis]
1064	} else {
1065	set label $_curFldLabel
1066	}
1067	} else {
1068	set label [string toupper $axis]
1069	}
1070	}
1071	# May be a space in the axis label.
1072	SendCmd [list axis name $axis $label]
1073
1074	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1075	set units [lindex $_fields($_curFldName) 1]
1076	} else {
1077	set units [$_first hints ${axis}units]
1078	}
1079	if { $units != "" } {
1080	# May be a space in the axis units.
1081	SendCmd [list axis units $axis $units]
1082	}
1083	}
1084	#
1085	# Reset the camera and other view parameters
1086	#
1087	ResetAxes
1088	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1089	$_arcball quaternion $q
1090	if {$_settings(-isheightmap) } {
1091	if { $_view(ortho)} {
1092	SendCmd "camera mode ortho"
1093	} else {
1094	SendCmd "camera mode persp"
1095	}
1096	DoRotate
1097	SendCmd "camera reset"
1098	}
1099	PanCamera
1100	InitSettings -xgrid -ygrid -zgrid \
1101	-axisvisible -axislabels -heightmapscale -field -isheightmap \
1102	-numisolines
1103	if { [array size _fields] < 2 } {
1104	catch {
1105	blt::table forget $itk_component(field) $itk_component(field_l)
1106	}
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	zoom 1.0
1173	xpan 0
1174	ypan 0
1175	}
1176	if { $_first != "" } {
1177	set location [$_first hints camera]
1178	if { $location != "" } {
1179	array set _view $location
1180	}
1181	}
1182	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1183	$_arcball quaternion $q
1184	if {$_settings(-isheightmap) } {
1185	DoRotate
1186	}
1187	SendCmd "camera reset"
1188	}
1189
1190	# ----------------------------------------------------------------------
1191	# USAGE: Zoom in
1192	# USAGE: Zoom out
1193	# USAGE: Zoom reset
1194	#
1195	# Called automatically when the user clicks on one of the zoom
1196	# controls for this widget. Changes the zoom for the current view.
1197	# ----------------------------------------------------------------------
1198	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1199	switch -- $option {
1200	"in" {
1201	set _view(zoom) [expr {$_view(zoom)*1.25}]
1202	SendCmd "camera zoom $_view(zoom)"
1203	}
1204	"out" {
1205	set _view(zoom) [expr {$_view(zoom)*0.8}]
1206	SendCmd "camera zoom $_view(zoom)"
1207	}
1208	"reset" {
1209	array set _view {
1210	zoom 1.0
1211	xpan 0
1212	ypan 0
1213	}
1214	SendCmd "camera reset"
1215	}
1216	}
1217	}
1218
1219	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1220	set x $_view(xpan)
1221	set y $_view(ypan)
1222	SendCmd "camera pan $x $y"
1223	}
1224
1225
1226	# ----------------------------------------------------------------------
1227	# USAGE: Rotate click <x> <y>
1228	# USAGE: Rotate drag <x> <y>
1229	# USAGE: Rotate release <x> <y>
1230	#
1231	# Called automatically when the user clicks/drags/releases in the
1232	# plot area. Moves the plot according to the user's actions.
1233	# ----------------------------------------------------------------------
1234	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1235	switch -- $option {
1236	"click" {
1237	$itk_component(view) configure -cursor fleur
1238	set _click(x) $x
1239	set _click(y) $y
1240	}
1241	"drag" {
1242	if {[array size _click] == 0} {
1243	Rotate click $x $y
1244	} else {
1245	set w [winfo width $itk_component(view)]
1246	set h [winfo height $itk_component(view)]
1247	if {$w <= 0 \|\| $h <= 0} {
1248	return
1249	}
1250
1251	if {[catch {
1252	# this fails sometimes for no apparent reason
1253	set dx [expr {double($x-$_click(x))/$w}]
1254	set dy [expr {double($y-$_click(y))/$h}]
1255	}]} {
1256	return
1257	}
1258	if { $dx == 0 && $dy == 0 } {
1259	return
1260	}
1261	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1262	EventuallyRotate $q
1263	set _click(x) $x
1264	set _click(y) $y
1265	}
1266	}
1267	"release" {
1268	Rotate drag $x $y
1269	$itk_component(view) configure -cursor ""
1270	catch {unset _click}
1271	}
1272	default {
1273	error "bad option \"$option\": should be click, drag, release"
1274	}
1275	}
1276	}
1277
1278	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1279	foreach tag [CurrentDatasets -visible] {
1280	SendCmd "dataset getscalar pixel $x $y $tag"
1281	}
1282	}
1283
1284	# ----------------------------------------------------------------------
1285	# USAGE: $this Pan click x y
1286	# $this Pan drag x y
1287	# $this Pan release x y
1288	#
1289	# Called automatically when the user clicks on one of the zoom
1290	# controls for this widget. Changes the zoom for the current view.
1291	# ----------------------------------------------------------------------
1292	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1293	switch -- $option {
1294	"set" {
1295	set w [winfo width $itk_component(view)]
1296	set h [winfo height $itk_component(view)]
1297	set x [expr $x / double($w)]
1298	set y [expr $y / double($h)]
1299	set _view(xpan) [expr $_view(xpan) + $x]
1300	set _view(ypan) [expr $_view(ypan) + $y]
1301	PanCamera
1302	return
1303	}
1304	"click" {
1305	set _click(x) $x
1306	set _click(y) $y
1307	$itk_component(view) configure -cursor hand1
1308	}
1309	"drag" {
1310	if { ![info exists _click(x)] } {
1311	set _click(x) $x
1312	}
1313	if { ![info exists _click(y)] } {
1314	set _click(y) $y
1315	}
1316	set w [winfo width $itk_component(view)]
1317	set h [winfo height $itk_component(view)]
1318	set dx [expr ($_click(x) - $x)/double($w)]
1319	set dy [expr ($_click(y) - $y)/double($h)]
1320	set _click(x) $x
1321	set _click(y) $y
1322	set _view(xpan) [expr $_view(xpan) - $dx]
1323	set _view(ypan) [expr $_view(ypan) - $dy]
1324	PanCamera
1325	}
1326	"release" {
1327	Pan drag $x $y
1328	$itk_component(view) configure -cursor ""
1329	}
1330	default {
1331	error "unknown option \"$option\": should set, click, drag, or release"
1332	}
1333	}
1334	}
1335
1336	# ----------------------------------------------------------------------
1337	# USAGE: InitSettings <what> ?<value>?
1338	#
1339	# Used internally to update rendering settings whenever parameters
1340	# change in the popup settings panel. Sends the new settings off
1341	# to the back end.
1342	# ----------------------------------------------------------------------
1343	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1344	foreach spec $args {
1345	if { [info exists _settings($_first${spec})] } {
1346	# Reset global setting with dataobj specific setting
1347	set _settings($spec) $_settings($_first${spec})
1348	}
1349	AdjustSetting $spec
1350	}
1351	}
1352
1353	#
1354	# AdjustSetting --
1355	#
1356	# Changes/updates a specific setting in the widget. There are
1357	# usually user-setable option. Commands are sent to the render
1358	# server.
1359	#
1360	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1361	if { $_beforeConnect } {
1362	return
1363	}
1364	switch -- $what {
1365	"-axisflymode" {
1366	set mode [$itk_component(axisflymode) value]
1367	set mode [$itk_component(axisflymode) translate $mode]
1368	set _settings($what) $mode
1369	SendCmd "axis flymode $mode"
1370	}
1371	"-axislabels" {
1372	set bool $_settings($what)
1373	SendCmd "axis labels all $bool"
1374	}
1375	"-axisminorticks" {
1376	set bool $_settings($what)
1377	SendCmd "axis minticks all $bool"
1378	}
1379	"-axisvisible" {
1380	set bool $_settings($what)
1381	SendCmd "axis visible all $bool"
1382	}
1383	"-xgrid" - "-ygrid" - "-zgrid" {
1384	set axis [string tolower [string range $what 1 1]]
1385	set bool $_settings($what)
1386	SendCmd "axis grid $axis $bool"
1387	}
1388	"-background" {
1389	set bg [$itk_component(background) value]
1390	array set fgcolors {
1391	"black" "white"
1392	"white" "black"
1393	"grey" "black"
1394	}
1395	set fg $fgcolors($bg)
1396	configure -plotbackground $bg -plotforeground $fg
1397	$itk_component(view) delete "legend"
1398	SendCmd "screen bgcolor [Color2RGB $bg]"
1399	SendCmd "outline color [Color2RGB $fg]"
1400	SendCmd "axis color all [Color2RGB $fg]"
1401	DrawLegend
1402	}
1403	"-colormap" {
1404	set _changed($what) 1
1405	StartBufferingCommands
1406	set color [$itk_component(colormap) value]
1407	set _settings($what) $color
1408	if { $color == "none" } {
1409	if { $_settings(-colormapvisible) } {
1410	SendCmd "heightmap surface 0"
1411	set _settings(-colormapvisible) 0
1412	}
1413	} else {
1414	if { !$_settings(-colormapvisible) } {
1415	SendCmd "heightmap surface 1"
1416	set _settings(-colormapvisible) 1
1417	}
1418	SetCurrentColormap $color
1419	if {$_settings(-colormapdiscrete)} {
1420	set numColors [expr $_settings(-numisolines) + 1]
1421	SendCmd "colormap res $numColors $color"
1422	}
1423	}
1424	StopBufferingCommands
1425	EventuallyRequestLegend
1426	}
1427	"-colormapvisible" {
1428	set bool $_settings($what)
1429	SendCmd "heightmap surface $bool"
1430	}
1431	"-colormapdiscrete" {
1432	set bool $_settings($what)
1433	set numColors [expr $_settings(-numisolines) + 1]
1434	StartBufferingCommands
1435	if {$bool} {
1436	SendCmd "colormap res $numColors"
1437	# Discrete colormap requires preinterp on
1438	SendCmd "heightmap preinterp on"
1439	} else {
1440	SendCmd "colormap res default"
1441	# FIXME: add setting for preinterp (default on)
1442	SendCmd "heightmap preinterp on"
1443	}
1444	StopBufferingCommands
1445	EventuallyRequestLegend
1446	}
1447	"-edges" {
1448	set bool $_settings($what)
1449	SendCmd "heightmap edges $bool"
1450	}
1451	"-field" {
1452	set label [$itk_component(field) value]
1453	set fname [$itk_component(field) translate $label]
1454	set _settings($what) $fname
1455	if { [info exists _fields($fname)] } {
1456	foreach { label units components } $_fields($fname) break
1457	if { $components > 1 } {
1458	set _colorMode vmag
1459	} else {
1460	set _colorMode scalar
1461	}
1462	set _curFldName $fname
1463	set _curFldLabel $label
1464	} else {
1465	puts stderr "unknown field \"$fname\""
1466	return
1467	}
1468	set label [$_first hints label]
1469	if { $label == "" } {
1470	if { [string match "component*" $_curFldName] } {
1471	set label Z
1472	} else {
1473	set label $_curFldLabel
1474	}
1475	}
1476	# May be a space in the axis label.
1477	SendCmd [list axis name z $label]
1478
1479	if { [$_first hints zunits] == "" } {
1480	set units [lindex $_fields($_curFldName) 1]
1481	} else {
1482	set units [$_first hints zunits]
1483	}
1484	if { $units != "" } {
1485	# May be a space in the axis units.
1486	SendCmd [list axis units z $units]
1487	}
1488	# Get the new limits because the field changed.
1489	ResetAxes
1490	SendCmd "dataset scalar $_curFldName"
1491	SendCmd "heightmap colormode scalar $_curFldName"
1492	Zoom reset
1493	UpdateContourList
1494	DrawLegend
1495	}
1496	"-heightmapscale" {
1497	if { $_settings(-isheightmap) } {
1498	set scale [GetHeightmapScale]
1499	# Have to set the datasets individually because we are
1500	# tracking them in _comp2scale.
1501	foreach dataset [CurrentDatasets -all] {
1502	SendCmd "heightmap heightscale $scale $dataset"
1503	set _comp2scale($dataset) $scale
1504	}
1505	ResetAxes
1506	}
1507	}
1508	"-isheightmap" {
1509	set bool $_settings($what)
1510	set c $itk_component(view)
1511	StartBufferingCommands
1512	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1513	if { $bool } {
1514	set _settings(-heightmapscale) 50
1515	set _settings(-opacity) $_settings(-saveopacity)
1516	set _settings(-lighting) $_settings(-savelighting)
1517	set _settings(-outline) 0
1518	} else {
1519	set _settings(-heightmapscale) 0
1520	set _settings(-lighting) 0
1521	set _settings(-opacity) 100
1522	set _settings(-outline) $_settings(-saveoutline)
1523	}
1524	InitSettings -lighting -opacity -outline
1525	set scale [GetHeightmapScale]
1526	# Have to set the datasets individually because we are
1527	# tracking them in _comp2scale.
1528	foreach dataset [CurrentDatasets -all] {
1529	SendCmd "heightmap heightscale $scale $dataset"
1530	set _comp2scale($dataset) $scale
1531	}
1532	if { $bool } {
1533	$itk_component(lighting) configure -state normal
1534	$itk_component(opacity) configure -state normal
1535	$itk_component(scale) configure -state normal
1536	$itk_component(opacity_l) configure -state normal
1537	$itk_component(scale_l) configure -state normal
1538	$itk_component(outline) configure -state disabled
1539	if {$_view(ortho)} {
1540	SendCmd "camera mode ortho"
1541	} else {
1542	SendCmd "camera mode persp"
1543	}
1544	} else {
1545	$itk_component(lighting) configure -state disabled
1546	$itk_component(opacity) configure -state disabled
1547	$itk_component(scale) configure -state disabled
1548	$itk_component(opacity_l) configure -state disabled
1549	$itk_component(scale_l) configure -state disabled
1550	$itk_component(outline) configure -state normal
1551	SendCmd "camera mode image"
1552	}
1553	if {$_settings(-stretchtofit)} {
1554	if {$scale == 0} {
1555	SendCmd "camera aspect window"
1556	} else {
1557	SendCmd "camera aspect square"
1558	}
1559	}
1560	ResetAxes
1561	if { $bool } {
1562	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1563	$_arcball quaternion $q
1564	SendCmd "camera orient $q"
1565	} else {
1566	bind $c <ButtonPress-1> {}
1567	bind $c <B1-Motion> {}
1568	bind $c <ButtonRelease-1> {}
1569	}
1570	Zoom reset
1571	# Fix the mouse bindings for rotation/panning and the
1572	# camera mode. Ideally we'd create a bindtag for these.
1573	if { $bool } {
1574	# Bindings for rotation via mouse
1575	bind $c <ButtonPress-1> \
1576	[itcl::code $this Rotate click %x %y]
1577	bind $c <B1-Motion> \
1578	[itcl::code $this Rotate drag %x %y]
1579	bind $c <ButtonRelease-1> \
1580	[itcl::code $this Rotate release %x %y]
1581	}
1582	StopBufferingCommands
1583	}
1584	"-isolinecolor" {
1585	set color [$itk_component(isolinecolor) value]
1586	if { $color == "none" } {
1587	if { $_settings(-isolinesvisible) } {
1588	SendCmd "heightmap isolines 0"
1589	set _settings(-isolinesvisible) 0
1590	}
1591	} else {
1592	if { !$_settings(-isolinesvisible) } {
1593	SendCmd "heightmap isolines 1"
1594	set _settings(-isolinesvisible) 1
1595	}
1596	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1597	}
1598	DrawLegend
1599	}
1600	"-isolinesvisible" {
1601	set bool $_settings($what)
1602	SendCmd "heightmap isolines $bool"
1603	DrawLegend
1604	}
1605	"-legendvisible" {
1606	if { !$_settings($what) } {
1607	$itk_component(view) delete legend
1608	}
1609	DrawLegend
1610	}
1611	"-lighting" {
1612	if { $_settings(-isheightmap) } {
1613	set _settings(-savelighting) $_settings($what)
1614	set bool $_settings($what)
1615	SendCmd "heightmap lighting $bool"
1616	} else {
1617	SendCmd "heightmap lighting 0"
1618	}
1619	}
1620	"-numisolines" {
1621	set _settings($what) [$itk_component(numisolines) value]
1622	set _currentNumIsolines $_settings($what)
1623	UpdateContourList
1624	set _changed($what) 1
1625	SendCmd "heightmap contourlist [list $_contourList]"
1626	if {$_settings(-colormapdiscrete)} {
1627	set numColors [expr $_settings($what) + 1]
1628	SendCmd "colormap res $numColors"
1629	EventuallyRequestLegend
1630	} else {
1631	DrawLegend
1632	}
1633	}
1634	"-opacity" {
1635	set _changed($what) 1
1636	set val [expr $_settings($what) * 0.01]
1637	if { $_settings(-isheightmap) } {
1638	set _settings(-saveopacity) $_settings($what)
1639	SendCmd "heightmap opacity $val"
1640	} else {
1641	SendCmd "heightmap opacity 1.0"
1642	}
1643	}
1644	"-outline" {
1645	if { $_settings(-isheightmap) } {
1646	SendCmd "outline visible 0"
1647	} else {
1648	set _settings(-saveoutline) $_settings($what)
1649	set bool $_settings($what)
1650	SendCmd "outline visible $bool"
1651	}
1652	}
1653	"-stretchtofit" {
1654	set bool $_settings($what)
1655	if { $bool } {
1656	set heightScale [GetHeightmapScale]
1657	if {$heightScale == 0} {
1658	SendCmd "camera aspect window"
1659	} else {
1660	SendCmd "camera aspect square"
1661	}
1662	} else {
1663	SendCmd "camera aspect native"
1664	}
1665	Zoom reset
1666	}
1667	"-wireframe" {
1668	set bool $_settings($what)
1669	SendCmd "heightmap wireframe $bool"
1670	}
1671	default {
1672	error "don't know how to fix $what"
1673	}
1674	}
1675	}
1676
1677	#
1678	# RequestLegend --
1679	#
1680	# Request a new legend from the server. The size of the legend
1681	# is determined from the height of the canvas.
1682	#
1683	# This should be called when
1684	# 1. A new current colormap is set.
1685	# 2. Window is resized.
1686	# 3. The limits of the data have changed. (Just need a redraw).
1687	# 4. Number of isolines have changed. (Just need a redraw).
1688	# 5. Legend becomes visible (Just need a redraw).
1689	#
1690	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1691	set _legendPending 0
1692	set font "Arial 8"
1693	set w 12
1694	set lineht [font metrics $font -linespace]
1695	# color ramp height = (canvas height) - (min and max value lines) - 2
1696	set h [expr {$_height - 2 * ($lineht + 2)}]
1697	set _legendHeight $h
1698
1699	set fname $_curFldName
1700	if { [string match "component*" $fname] } {
1701	set title ""
1702	} else {
1703	if { [info exists _fields($fname)] } {
1704	foreach { title units } $_fields($fname) break
1705	if { $units != "" } {
1706	set title [format "%s (%s)" $title $units]
1707	}
1708	} else {
1709	set title $fname
1710	}
1711	}
1712	# If there's a title too, substract one more line
1713	if { $title != "" } {
1714	incr h -$lineht
1715	}
1716	if { $h < 1 } {
1717	return
1718	}
1719	# Set the legend on the first heightmap dataset.
1720	if { $_currentColormap != "" } {
1721	set cmap $_currentColormap
1722	SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1723	}
1724	}
1725
1726	#
1727	# ResetAxes --
1728	#
1729	# Set axis z bounds and range
1730	#
1731	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1732	if { ![info exists _limits($_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	#
1784	# BuildColormap --
1785	#
1786	# Build the designated colormap on the server.
1787	#
1788	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1789	set cmap [ColorsToColormap $name]
1790	if { [llength $cmap] == 0 } {
1791	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1792	}
1793	set wmap "0.0 1.0 1.0 1.0"
1794	SendCmd "colormap add $name { $cmap } { $wmap }"
1795	}
1796
1797	# ----------------------------------------------------------------------
1798	# CONFIGURATION OPTION: -mode
1799	# ----------------------------------------------------------------------
1800	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1801	switch -- $itk_option(-mode) {
1802	"heightmap" {
1803	set _settings(-isheightmap) 1
1804	}
1805	"contour" {
1806	set _settings(-isheightmap) 0
1807	}
1808	default {
1809	error "unknown mode settings \"$itk_option(-mode)\""
1810	}
1811	}
1812	if { !$_reset } {
1813	AdjustSetting -isheightmap
1814	}
1815	}
1816
1817	# ----------------------------------------------------------------------
1818	# CONFIGURATION OPTION: -plotbackground
1819	# ----------------------------------------------------------------------
1820	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1821	if { [isconnected] } {
1822	set rgb [Color2RGB $itk_option(-plotbackground)]
1823	if { !$_reset } {
1824	SendCmd "screen bgcolor $rgb"
1825	}
1826	$itk_component(view) configure -background $itk_option(-plotbackground)
1827	}
1828	}
1829
1830	# ----------------------------------------------------------------------
1831	# CONFIGURATION OPTION: -plotforeground
1832	# ----------------------------------------------------------------------
1833	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1834	if { [isconnected] } {
1835	set rgb [Color2RGB $itk_option(-plotforeground)]
1836	if { !$_reset } {
1837	SendCmd "outline color $rgb"
1838	SendCmd "axis color all $rgb"
1839	}
1840	}
1841	}
1842
1843	itcl::body Rappture::VtkHeightmapViewer::limits3 { dataobj } {
1844	lappend limits x [$dataobj limits x]
1845	lappend limits y [$dataobj limits y]
1846	if { [catch { $dataobj limits $_curFldName } vlim] != 0 } {
1847	set vlim [$dataobj limits v]
1848	}
1849	lappend limits v $vlim
1850	return $limits
1851	}
1852
1853	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1854
1855	set fg [option get $itk_component(hull) font Font]
1856	#set bfg [option get $itk_component(hull) boldFont Font]
1857
1858	set inner [$itk_component(main) insert end \
1859	-title "Contour/Surface Settings" \
1860	-icon [Rappture::icon contour2]]
1861	$inner configure -borderwidth 4
1862
1863	checkbutton $inner.legend \
1864	-text "Legend" \
1865	-variable [itcl::scope _settings(-legendvisible)] \
1866	-command [itcl::code $this AdjustSetting -legendvisible] \
1867	-font "Arial 9"
1868
1869	checkbutton $inner.wireframe \
1870	-text "Wireframe" \
1871	-variable [itcl::scope _settings(-wireframe)] \
1872	-command [itcl::code $this AdjustSetting -wireframe] \
1873	-font "Arial 9"
1874
1875	itk_component add lighting {
1876	checkbutton $inner.lighting \
1877	-text "Enable Lighting" \
1878	-variable [itcl::scope _settings(-lighting)] \
1879	-command [itcl::code $this AdjustSetting -lighting] \
1880	-font "Arial 9"
1881	} {
1882	ignore -font
1883	}
1884	checkbutton $inner.edges \
1885	-text "Edges" \
1886	-variable [itcl::scope _settings(-edges)] \
1887	-command [itcl::code $this AdjustSetting -edges] \
1888	-font "Arial 9"
1889
1890	itk_component add outline {
1891	checkbutton $inner.outline \
1892	-text "Outline" \
1893	-variable [itcl::scope _settings(-outline)] \
1894	-command [itcl::code $this AdjustSetting -outline] \
1895	-font "Arial 9"
1896	} {
1897	ignore -font
1898	}
1899	checkbutton $inner.stretch \
1900	-text "Stretch to fit" \
1901	-variable [itcl::scope _settings(-stretchtofit)] \
1902	-command [itcl::code $this AdjustSetting -stretchtofit] \
1903	-font "Arial 9"
1904
1905	checkbutton $inner.isolines \
1906	-text "Isolines" \
1907	-variable [itcl::scope _settings(-isolinesvisible)] \
1908	-command [itcl::code $this AdjustSetting -isolinesvisible] \
1909	-font "Arial 9"
1910
1911	checkbutton $inner.colormapDiscrete \
1912	-text "Discrete Colormap" \
1913	-variable [itcl::scope _settings(-colormapdiscrete)] \
1914	-command [itcl::code $this AdjustSetting -colormapdiscrete] \
1915	-font "Arial 9"
1916
1917	itk_component add field_l {
1918	label $inner.field_l -text "Field" -font "Arial 9"
1919	} {
1920	ignore -font
1921	}
1922	itk_component add field {
1923	Rappture::Combobox $inner.field -width 10 -editable no
1924	}
1925	bind $inner.field <<Value>> \
1926	[itcl::code $this AdjustSetting -field]
1927
1928	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1929	itk_component add colormap {
1930	Rappture::Combobox $inner.colormap -width 10 -editable no
1931	}
1932	$inner.colormap choices insert end [GetColormapList -includeNone]
1933	$itk_component(colormap) value $_settings(-colormap)
1934	bind $inner.colormap <<Value>> \
1935	[itcl::code $this AdjustSetting -colormap]
1936
1937	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1938	itk_component add isolinecolor {
1939	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1940	}
1941	$inner.isolinecolor choices insert end \
1942	"black" "black" \
1943	"blue" "blue" \
1944	"cyan" "cyan" \
1945	"green" "green" \
1946	"grey" "grey" \
1947	"magenta" "magenta" \
1948	"orange" "orange" \
1949	"red" "red" \
1950	"white" "white" \
1951	"none" "none"
1952
1953	$itk_component(isolinecolor) value $_settings(-isolinecolor)
1954	bind $inner.isolinecolor <<Value>> \
1955	[itcl::code $this AdjustSetting -isolinecolor]
1956
1957	label $inner.background_l -text "Background Color" -font "Arial 9"
1958	itk_component add background {
1959	Rappture::Combobox $inner.background -width 10 -editable no
1960	}
1961	$inner.background choices insert end \
1962	"black" "black" \
1963	"white" "white" \
1964	"grey" "grey"
1965
1966	$itk_component(background) value "white"
1967	bind $inner.background <<Value>> \
1968	[itcl::code $this AdjustSetting -background]
1969
1970	itk_component add opacity_l {
1971	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1972	} {
1973	ignore -font
1974	}
1975	itk_component add opacity {
1976	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1977	-variable [itcl::scope _settings(-opacity)] \
1978	-showvalue off \
1979	-command [itcl::code $this AdjustSetting -opacity]
1980	}
1981	itk_component add scale_l {
1982	label $inner.scale_l -text "Scale" -font "Arial 9"
1983	} {
1984	ignore -font
1985	}
1986	itk_component add scale {
1987	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1988	-variable [itcl::scope _settings(-heightmapscale)] \
1989	-showvalue off \
1990	-command [itcl::code $this AdjustSetting -heightmapscale]
1991	}
1992	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1993	itk_component add numisolines {
1994	Rappture::Spinint $inner.numisolines \
1995	-min 0 -max 50 -font "arial 9"
1996	}
1997	$itk_component(numisolines) value $_settings(-numisolines)
1998	bind $itk_component(numisolines) <<Value>> \
1999	[itcl::code $this AdjustSetting -numisolines]
2000
2001	frame $inner.separator1 -height 2 -relief sunken -bd 1
2002	frame $inner.separator2 -height 2 -relief sunken -bd 1
2003
2004	blt::table $inner \
2005	0,0 $inner.field_l -anchor w -pady 2 \
2006	0,1 $inner.field -anchor w -pady 2 -fill x \
2007	1,0 $inner.colormap_l -anchor w -pady 2 \
2008	1,1 $inner.colormap -anchor w -pady 2 -fill x \
2009	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
2010	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
2011	3,0 $inner.background_l -anchor w -pady 2 \
2012	3,1 $inner.background -anchor w -pady 2 -fill x \
2013	4,0 $inner.numisolines_l -anchor w -pady 2 \
2014	4,1 $inner.numisolines -anchor w -pady 2 \
2015	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
2016	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
2017	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
2018	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
2019	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
2020	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
2021	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
2022	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
2023	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
2024	14,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
2025	15,0 $inner.opacity_l -anchor w -pady 2 \
2026	15,1 $inner.opacity -fill x -pady 2 \
2027	16,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
2028	16,1 $inner.scale -fill x -pady 2 -cspan 2 \
2029
2030	blt::table configure $inner r* c* -resize none
2031	blt::table configure $inner r17 c1 -resize expand
2032	}
2033
2034	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
2035
2036	set fg [option get $itk_component(hull) font Font]
2037	#set bfg [option get $itk_component(hull) boldFont Font]
2038
2039	set inner [$itk_component(main) insert end \
2040	-title "Axis Settings" \
2041	-icon [Rappture::icon axis2]]
2042	$inner configure -borderwidth 4
2043
2044	checkbutton $inner.visible \
2045	-text "Axes" \
2046	-variable [itcl::scope _settings(-axisvisible)] \
2047	-command [itcl::code $this AdjustSetting -axisvisible] \
2048	-font "Arial 9"
2049	checkbutton $inner.labels \
2050	-text "Axis Labels" \
2051	-variable [itcl::scope _settings(-axislabels)] \
2052	-command [itcl::code $this AdjustSetting -axislabels] \
2053	-font "Arial 9"
2054	label $inner.grid_l -text "Grid" -font "Arial 9"
2055	checkbutton $inner.xgrid \
2056	-text "X" \
2057	-variable [itcl::scope _settings(-xgrid)] \
2058	-command [itcl::code $this AdjustSetting -xgrid] \
2059	-font "Arial 9"
2060	checkbutton $inner.ygrid \
2061	-text "Y" \
2062	-variable [itcl::scope _settings(-ygrid)] \
2063	-command [itcl::code $this AdjustSetting -ygrid] \
2064	-font "Arial 9"
2065	checkbutton $inner.zgrid \
2066	-text "Z" \
2067	-variable [itcl::scope _settings(-zgrid)] \
2068	-command [itcl::code $this AdjustSetting -zgrid] \
2069	-font "Arial 9"
2070	checkbutton $inner.minorticks \
2071	-text "Minor Ticks" \
2072	-variable [itcl::scope _settings(-axisminorticks)] \
2073	-command [itcl::code $this AdjustSetting -axisminorticks] \
2074	-font "Arial 9"
2075
2076	label $inner.mode_l -text "Mode" -font "Arial 9"
2077
2078	itk_component add axisflymode {
2079	Rappture::Combobox $inner.mode -width 10 -editable no
2080	}
2081	$inner.mode choices insert end \
2082	"static_triad" "static" \
2083	"closest_triad" "closest" \
2084	"furthest_triad" "farthest" \
2085	"outer_edges" "outer"
2086	$itk_component(axisflymode) value $_settings(-axisflymode)
2087	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
2088
2089	blt::table $inner \
2090	0,0 $inner.visible -anchor w -cspan 4 \
2091	1,0 $inner.labels -anchor w -cspan 4 \
2092	2,0 $inner.minorticks -anchor w -cspan 4 \
2093	4,0 $inner.grid_l -anchor w \
2094	4,1 $inner.xgrid -anchor w \
2095	4,2 $inner.ygrid -anchor w \
2096	4,3 $inner.zgrid -anchor w \
2097	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2098	5,1 $inner.mode -fill x -cspan 3
2099
2100	blt::table configure $inner r* c* -resize none
2101	blt::table configure $inner r7 c6 -resize expand
2102	blt::table configure $inner r3 -height 0.125i
2103	}
2104
2105
2106	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2107	set inner [$itk_component(main) insert end \
2108	-title "Camera Settings" \
2109	-icon [Rappture::icon camera]]
2110	$inner configure -borderwidth 4
2111
2112	label $inner.view_l -text "view" -font "Arial 9"
2113	set f [frame $inner.view]
2114	foreach side { front back left right top bottom } {
2115	button $f.$side -image [Rappture::icon view$side] \
2116	-command [itcl::code $this SetOrientation $side]
2117	Rappture::Tooltip::for $f.$side "Change the view to $side"
2118	pack $f.$side -side left
2119	}
2120
2121	blt::table $inner \
2122	0,0 $inner.view_l -anchor e -pady 2 \
2123	0,1 $inner.view -anchor w -pady 2
2124
2125	set labels { qx qy qz qw xpan ypan zoom }
2126	set row 1
2127	foreach tag $labels {
2128	label $inner.${tag}label -text $tag -font "Arial 9"
2129	entry $inner.${tag} -font "Arial 9" -bg white \
2130	-textvariable [itcl::scope _view($tag)]
2131	bind $inner.${tag} <Return> \
2132	[itcl::code $this camera set ${tag}]
2133	bind $inner.${tag} <KP_Enter> \
2134	[itcl::code $this camera set ${tag}]
2135	blt::table $inner \
2136	$row,0 $inner.${tag}label -anchor e -pady 2 \
2137	$row,1 $inner.${tag} -anchor w -pady 2
2138	blt::table configure $inner r$row -resize none
2139	incr row
2140	}
2141	checkbutton $inner.ortho \
2142	-text "Orthographic Projection" \
2143	-variable [itcl::scope _view(ortho)] \
2144	-command [itcl::code $this camera set ortho] \
2145	-font "Arial 9"
2146	blt::table $inner \
2147	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2148	blt::table configure $inner r$row -resize none
2149	incr row
2150
2151	blt::table configure $inner c* r* -resize none
2152	blt::table configure $inner c2 -resize expand
2153	blt::table configure $inner r$row -resize expand
2154	}
2155
2156	#
2157	# camera --
2158	#
2159	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2160	switch -- $option {
2161	"show" {
2162	puts [array get _view]
2163	}
2164	"set" {
2165	set who [lindex $args 0]
2166	set x $_view($who)
2167	set code [catch { string is double $x } result]
2168	if { $code != 0 \|\| !$result } {
2169	return
2170	}
2171	switch -- $who {
2172	"ortho" {
2173	if {$_view(ortho)} {
2174	SendCmd "camera mode ortho"
2175	} else {
2176	SendCmd "camera mode persp"
2177	}
2178	}
2179	"xpan" - "ypan" {
2180	PanCamera
2181	}
2182	"qx" - "qy" - "qz" - "qw" {
2183	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2184	$_arcball quaternion $q
2185	EventuallyRotate $q
2186	}
2187	"zoom" {
2188	SendCmd "camera zoom $_view(zoom)"
2189	}
2190	}
2191	}
2192	}
2193	}
2194
2195	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2196	set bytes ""
2197	foreach dataobj [get] {
2198	foreach comp [$dataobj components] {
2199	set tag $dataobj-$comp
2200	set contents [$dataobj vtkdata $comp]
2201	append bytes "$contents\n"
2202	}
2203	}
2204	return [list .vtk $bytes]
2205	}
2206
2207	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2208	if { [image width $_image(download)] > 0 &&
2209	[image height $_image(download)] > 0 } {
2210	set bytes [$_image(download) data -format "jpeg -quality 100"]
2211	set bytes [Rappture::encoding::decode -as b64 $bytes]
2212	return [list .jpg $bytes]
2213	}
2214	return ""
2215	}
2216
2217	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2218	Rappture::Balloon $popup \
2219	-title "[Rappture::filexfer::label downloadWord] as..."
2220	set inner [$popup component inner]
2221	label $inner.summary -text "" -anchor w
2222	radiobutton $inner.vtk_button -text "VTK data file" \
2223	-variable [itcl::scope _downloadPopup(format)] \
2224	-font "Arial 9 " \
2225	-value vtk
2226	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2227	radiobutton $inner.image_button -text "Image File" \
2228	-variable [itcl::scope _downloadPopup(format)] \
2229	-font "Arial 9 " \
2230	-value image
2231	Rappture::Tooltip::for $inner.image_button \
2232	"Save as digital image."
2233
2234	button $inner.ok -text "Save" \
2235	-highlightthickness 0 -pady 2 -padx 3 \
2236	-command $command \
2237	-compound left \
2238	-image [Rappture::icon download]
2239
2240	button $inner.cancel -text "Cancel" \
2241	-highlightthickness 0 -pady 2 -padx 3 \
2242	-command [list $popup deactivate] \
2243	-compound left \
2244	-image [Rappture::icon cancel]
2245
2246	blt::table $inner \
2247	0,0 $inner.summary -cspan 2 \
2248	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2249	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2250	4,1 $inner.cancel -width .9i -fill y \
2251	4,0 $inner.ok -padx 2 -width .9i -fill y
2252	blt::table configure $inner r3 -height 4
2253	blt::table configure $inner r4 -pady 4
2254	raise $inner.image_button
2255	$inner.vtk_button invoke
2256	return $inner
2257	}
2258
2259	#
2260	# SetObjectStyle --
2261	#
2262	# Set the style of the heightmap/contour object. This gets calls
2263	# for each dataset once as it is loaded. It can overridden by
2264	# the user controls.
2265	#
2266	#
2267	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2268	# Parse style string.
2269	set tag $dataobj-$comp
2270	array set style {
2271	-color BCGYR
2272	-levels 10
2273	-opacity 1.0
2274	}
2275	set stylelist [$dataobj style $comp]
2276	if { $stylelist != "" } {
2277	array set style $stylelist
2278	}
2279	# This is too complicated. We want to set the colormap, number of
2280	# isolines and opacity for the dataset. They can be the default values,
2281	# the style hints loaded with the dataset, or set by user controls. As
2282	# datasets get loaded, they first use the defaults that are overidden
2283	# by the style hints. If the user changes the global controls, then that
2284	# overrides everything else. I don't know what it means when global
2285	# controls are specified as style hints by each dataset. It complicates
2286	# the code to handle aberrant cases.
2287
2288	if { $_changed(-opacity) } {
2289	set style(-opacity) [expr $_settings(-opacity) * 0.01]
2290	}
2291	if { $_changed(-numisolines) } {
2292	set style(-levels) $_settings(-numisolines)
2293	}
2294	if { $_changed(-colormap) } {
2295	set style(-color) $_settings(-colormap)
2296	}
2297	if { $_currentColormap == "" } {
2298	$itk_component(colormap) value $style(-color)
2299	}
2300	if { [info exists style(-stretchtofit)] } {
2301	set _settings(-stretchtofit) $style(-stretchtofit)
2302	AdjustSetting -stretchtofit
2303	}
2304	if { $_currentNumIsolines != $style(-levels) } {
2305	set _currentNumIsolines $style(-levels)
2306	set _settings(-numisolines) $_currentNumIsolines
2307	$itk_component(numisolines) value $_currentNumIsolines
2308	UpdateContourList
2309	DrawLegend
2310	}
2311	SendCmd "outline add $tag"
2312	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2313	SendCmd "outline visible $_settings(-outline) $tag"
2314	set scale [GetHeightmapScale]
2315	SendCmd "[list heightmap add contourlist $_contourList $scale $tag]"
2316	set _comp2scale($tag) $_settings(-heightmapscale)
2317	SendCmd "heightmap edges $_settings(-edges) $tag"
2318	SendCmd "heightmap wireframe $_settings(-wireframe) $tag"
2319	SetCurrentColormap $style(-color)
2320	set color [$itk_component(isolinecolor) value]
2321	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2322	SendCmd "heightmap lighting $_settings(-isheightmap) $tag"
2323	SendCmd "heightmap isolines $_settings(-isolinesvisible) $tag"
2324	SendCmd "heightmap surface $_settings(-colormapvisible) $tag"
2325	SendCmd "heightmap opacity $style(-opacity) $tag"
2326	set _settings(-opacity) [expr $style(-opacity) * 100.0]
2327	}
2328
2329	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2330	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2331	return 0
2332	}
2333	return 1
2334	}
2335
2336	# ----------------------------------------------------------------------
2337	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2338	#
2339	# Invoked automatically whenever the "legend" command comes in from
2340	# the rendering server. Indicates that binary image data with the
2341	# specified <size> will follow.
2342	# ----------------------------------------------------------------------
2343	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2344	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2345	if { [isconnected] } {
2346	set bytes [ReceiveBytes $size]
2347	if { ![info exists _image(legend)] } {
2348	set _image(legend) [image create photo]
2349	}
2350	$_image(legend) configure -data $bytes
2351	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2352	if { [catch {DrawLegend} errs] != 0 } {
2353	global errorInfo
2354	puts stderr "errs=$errs errorInfo=$errorInfo"
2355	}
2356	}
2357	}
2358
2359	#
2360	# DrawLegend --
2361	#
2362	# Draws the legend in the own canvas on the right side of the plot area.
2363	#
2364	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2365	set fname $_curFldName
2366	set c $itk_component(view)
2367	set w [winfo width $c]
2368	set h [winfo height $c]
2369	set font "Arial 8"
2370	set lineht [font metrics $font -linespace]
2371
2372	if { [string match "component*" $fname] } {
2373	set title ""
2374	} else {
2375	if { [info exists _fields($fname)] } {
2376	foreach { title units } $_fields($fname) break
2377	if { $units != "" } {
2378	set title [format "%s (%s)" $title $units]
2379	}
2380	} else {
2381	set title $fname
2382	}
2383	}
2384	set x [expr $w - 2]
2385	if { !$_settings(-legendvisible) } {
2386	$c delete legend
2387	return
2388	}
2389	if { [$c find withtag "legend"] == "" } {
2390	set y 2
2391	# If there's a legend title, create a text item for the title.
2392	$c create text $x $y \
2393	-anchor ne \
2394	-fill $itk_option(-plotforeground) -tags "title legend" \
2395	-font $font
2396	if { $title != "" } {
2397	incr y $lineht
2398	}
2399	$c create text $x $y \
2400	-anchor ne \
2401	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2402	-font $font
2403	incr y $lineht
2404	$c create image $x $y \
2405	-anchor ne \
2406	-image $_image(legend) -tags "colormap legend"
2407	$c create rectangle $x $y 1 1 \
2408	-fill "" -outline "" -tags "sensor legend"
2409	$c create text $x [expr {$h-2}] \
2410	-anchor se \
2411	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2412	-font $font
2413	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2414	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2415	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2416	}
2417	$c delete isoline
2418	set x2 $x
2419	set iw [image width $_image(legend)]
2420	set ih [image height $_image(legend)]
2421	set x1 [expr $x2 - ($iw*12)/10]
2422	set color [$itk_component(isolinecolor) value]
2423
2424	# Draw the isolines on the legend.
2425	array unset _isolines
2426	if { $color != "none" && [info exists _limits($_curFldName)] &&
2427	$_settings(-isolinesvisible) && $_currentNumIsolines > 0 } {
2428
2429	foreach { vmin vmax } $_limits($_curFldName) break
2430	set range [expr double($vmax - $vmin)]
2431	if { $range <= 0.0 } {
2432	set range 1.0; # Min is greater or equal to max.
2433	}
2434	set tags "isoline legend"
2435	set offset [expr 2 + $lineht]
2436	if { $title != "" } {
2437	incr offset $lineht
2438	}
2439	foreach value $_contourList {
2440	set norm [expr 1.0 - (($value - $vmin) / $range)]
2441	set y1 [expr int(round(($norm * $ih) + $offset))]
2442	for { set off 0 } { $off < 3 } { incr off } {
2443	set _isolines([expr $y1 + $off]) $value
2444	set _isolines([expr $y1 - $off]) $value
2445	}
2446	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2447	}
2448	}
2449
2450	$c bind title <ButtonPress> [itcl::code $this Combo post]
2451	$c bind title <Enter> [itcl::code $this Combo activate]
2452	$c bind title <Leave> [itcl::code $this Combo deactivate]
2453	# Reset the item coordinates according the current size of the plot.
2454	if { [info exists _limits($_curFldName)] } {
2455	foreach { vmin vmax } $_limits($_curFldName) break
2456	$c itemconfigure vmin -text [format %g $vmin]
2457	$c itemconfigure vmax -text [format %g $vmax]
2458	}
2459	set y 2
2460	# If there's a legend title, move the title to the correct position
2461	if { $title != "" } {
2462	$c itemconfigure title -text $title
2463	$c coords title $x $y
2464	incr y $lineht
2465	}
2466	$c coords vmax $x $y
2467	incr y $lineht
2468	$c coords colormap $x $y
2469	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2470	$c raise sensor
2471	$c coords vmin $x [expr {$h - 2}]
2472	}
2473
2474	#
2475	# EnterLegend --
2476	#
2477	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2478	SetLegendTip $x $y
2479	}
2480
2481	#
2482	# MotionLegend --
2483	#
2484	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2485	Rappture::Tooltip::tooltip cancel
2486	set c $itk_component(view)
2487	set cw [winfo width $c]
2488	set ch [winfo height $c]
2489	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2490	SetLegendTip $x $y
2491	}
2492	}
2493
2494	#
2495	# LeaveLegend --
2496	#
2497	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2498	Rappture::Tooltip::tooltip cancel
2499	.rappturetooltip configure -icon ""
2500	}
2501
2502	#
2503	# SetLegendTip --
2504	#
2505	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2506	set fname $_curFldName
2507	set c $itk_component(view)
2508	set w [winfo width $c]
2509	set h [winfo height $c]
2510	set font "Arial 8"
2511	set lineht [font metrics $font -linespace]
2512
2513	set ih [image height $_image(legend)]
2514	# Subtract off the offset of the color ramp from the top of the canvas
2515	set iy [expr $y - ($lineht + 2)]
2516
2517	if { [string match "component*" $fname] } {
2518	set title ""
2519	} else {
2520	if { [info exists _fields($fname)] } {
2521	foreach { title units } $_fields($fname) break
2522	if { $units != "" } {
2523	set title [format "%s (%s)" $title $units]
2524	}
2525	} else {
2526	set title $fname
2527	}
2528	}
2529	# If there's a legend title, increase the offset by the line height.
2530	if { $title != "" } {
2531	incr iy -$lineht
2532	}
2533
2534	# Make a swatch of the selected color
2535	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2536	return
2537	}
2538
2539	if { ![info exists _image(swatch)] } {
2540	set _image(swatch) [image create photo -width 24 -height 24]
2541	}
2542	set color [eval format "\#%02x%02x%02x" $pixel]
2543	$_image(swatch) put black -to 0 0 23 23
2544	$_image(swatch) put $color -to 1 1 22 22
2545
2546	# Compute the value of the point
2547	if { [info exists _limits($fname)] } {
2548	foreach { vmin vmax } $_limits($fname) break
2549	set t [expr 1.0 - (double($iy) / double($ih-1))]
2550	set value [expr $t * ($vmax - $vmin) + $vmin]
2551	} else {
2552	set value 0.0
2553	}
2554	set tipx [expr $x + 15]
2555	set tipy [expr $y - 5]
2556	.rappturetooltip configure -icon $_image(swatch)
2557	if { [info exists _isolines($y)] } {
2558	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2559	} else {
2560	Rappture::Tooltip::text $c [format "$title %g" $value]
2561	}
2562	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2563	}
2564
2565	# ----------------------------------------------------------------------
2566	# USAGE: _dropdown post
2567	# USAGE: _dropdown unpost
2568	# USAGE: _dropdown select
2569	#
2570	# Used internally to handle the dropdown list for this combobox. The
2571	# post/unpost options are invoked when the list is posted or unposted
2572	# to manage the relief of the controlling button. The select option
2573	# is invoked whenever there is a selection from the list, to assign
2574	# the value back to the gauge.
2575	# ----------------------------------------------------------------------
2576	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2577	set c $itk_component(view)
2578	switch -- $option {
2579	post {
2580	foreach { x1 y1 x2 y2 } [$c bbox title] break
2581	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2582	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2583	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2584	tk_popup $itk_component(fieldmenu) $x $y
2585	}
2586	activate {
2587	$c itemconfigure title -fill red
2588	}
2589	deactivate {
2590	$c itemconfigure title -fill $itk_option(-plotforeground)
2591	}
2592	invoke {
2593	$itk_component(field) value $_curFldLabel
2594	AdjustSetting -field
2595	}
2596	default {
2597	error "bad option \"$option\": should be post, unpost, select"
2598	}
2599	}
2600	}
2601
2602	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2603	if { $_settings(-isheightmap) } {
2604	set val $_settings(-heightmapscale)
2605	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2606	return $sval
2607	}
2608	return 0
2609	}
2610
2611	itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2612	array set positions {
2613	front "0.707107 0.707107 0 0"
2614	back "0 0 0.707107 0.707107"
2615	left "0.5 0.5 -0.5 -0.5"
2616	right "0.5 0.5 0.5 0.5"
2617	top "1 0 0 0"
2618	bottom "0 1 0 0"
2619	}
2620	foreach name { qw qx qy qz } value $positions($side) {
2621	set _view($name) $value
2622	}
2623	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2624	$_arcball quaternion $q
2625	SendCmd "camera orient $q"
2626	SendCmd "camera reset"
2627	set _view(xpan) 0
2628	set _view(ypan) 0
2629	set _view(zoom) 1.0
2630	}
2631
2632	itcl::body Rappture::VtkHeightmapViewer::UpdateContourList {} {
2633	if {$_currentNumIsolines == 0} {
2634	set _contourList ""
2635	return
2636	}
2637	if { ![info exists _limits($_curFldName)] } {
2638	return
2639	}
2640	foreach { vmin vmax } $_limits($_curFldName) break
2641	set v [blt::vector create \#auto]
2642	$v seq $vmin $vmax [expr $_currentNumIsolines+2]
2643	$v delete end 0
2644	set _contourList [$v range 0 end]
2645	blt::vector destroy $v
2646	}

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