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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 4685

Last change on this file since 4685 was 4685, checked in by ldelgass, 10 years ago
I think this should help with nanohub ticket #267036. See the comment in the source for a brief explanation. Basically, I don't think the manual settings are well tested and the CubeAxes? will work best if we let the automatic formatting do its thing.
File size: 87.9 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 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	#SendCmd "axis lformat all %g"
1051
1052	foreach axis { x y z } {
1053	if { $axis == "z" } {
1054	set label [$_first hints label]
1055	} else {
1056	set label [$_first hints ${axis}label]
1057	}
1058	if { $label == "" } {
1059	if {$axis == "z"} {
1060	if { [string match "component*" $_curFldName] } {
1061	set label [string toupper $axis]
1062	} else {
1063	set label $_curFldLabel
1064	}
1065	} else {
1066	set label [string toupper $axis]
1067	}
1068	}
1069	# May be a space in the axis label.
1070	SendCmd [list axis name $axis $label]
1071
1072	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1073	set units [lindex $_fields($_curFldName) 1]
1074	} else {
1075	set units [$_first hints ${axis}units]
1076	}
1077	if { $units != "" } {
1078	# May be a space in the axis units.
1079	SendCmd [list axis units $axis $units]
1080	}
1081	}
1082	#
1083	# Reset the camera and other view parameters
1084	#
1085	ResetAxes
1086	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1087	$_arcball quaternion $q
1088	if {$_settings(-isheightmap) } {
1089	if { $_view(ortho)} {
1090	SendCmd "camera mode ortho"
1091	} else {
1092	SendCmd "camera mode persp"
1093	}
1094	DoRotate
1095	SendCmd "camera reset"
1096	}
1097	PanCamera
1098	InitSettings -xgrid -ygrid -zgrid \
1099	-axisvisible -axislabels -heightmapscale -field -isheightmap \
1100	-numisolines
1101	if { [array size _fields] < 2 } {
1102	catch {blt::table forget $itk_component(field) $itk_component(field_l)}
1103	}
1104	RequestLegend
1105	set _reset 0
1106	}
1107	global readyForNextFrame
1108	set readyForNextFrame 0; # Don't advance to the next frame
1109
1110	# Actually write the commands to the server socket. If it fails, we don't
1111	# care. We're finished here.
1112	blt::busy hold $itk_component(hull)
1113	StopBufferingCommands
1114	blt::busy release $itk_component(hull)
1115	}
1116
1117	# ----------------------------------------------------------------------
1118	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1119	#
1120	# Returns a list of server IDs for the current datasets being displayed. This
1121	# is normally a single ID, but it might be a list of IDs if the current data
1122	# object has multiple components.
1123	# ----------------------------------------------------------------------
1124	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1125	set flag [lindex $args 0]
1126	switch -- $flag {
1127	"-all" {
1128	if { [llength $args] > 1 } {
1129	error "CurrentDatasets: can't specify dataobj after \"-all\""
1130	}
1131	set dlist [get -objects]
1132	}
1133	"-visible" {
1134	if { [llength $args] > 1 } {
1135	set dlist {}
1136	set args [lrange $args 1 end]
1137	foreach dataobj $args {
1138	if { [info exists _obj2ovride($dataobj-raise)] } {
1139	lappend dlist $dataobj
1140	}
1141	}
1142	} else {
1143	set dlist [get -visible]
1144	}
1145	}
1146	default {
1147	set dlist $args
1148	}
1149	}
1150	set rlist ""
1151	foreach dataobj $dlist {
1152	foreach comp [$dataobj components] {
1153	set tag $dataobj-$comp
1154	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1155	lappend rlist $tag
1156	}
1157	}
1158	}
1159	return $rlist
1160	}
1161
1162	itcl::body Rappture::VtkHeightmapViewer::CameraReset {} {
1163	array set _view {
1164	qw 0.36
1165	qx 0.25
1166	qy 0.50
1167	qz 0.70
1168	zoom 1.0
1169	xpan 0
1170	ypan 0
1171	}
1172	if { $_first != "" } {
1173	set location [$_first hints camera]
1174	if { $location != "" } {
1175	array set _view $location
1176	}
1177	}
1178	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1179	$_arcball quaternion $q
1180	if {$_settings(-isheightmap) } {
1181	DoRotate
1182	}
1183	SendCmd "camera reset"
1184	}
1185
1186	# ----------------------------------------------------------------------
1187	# USAGE: Zoom in
1188	# USAGE: Zoom out
1189	# USAGE: Zoom reset
1190	#
1191	# Called automatically when the user clicks on one of the zoom
1192	# controls for this widget. Changes the zoom for the current view.
1193	# ----------------------------------------------------------------------
1194	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1195	switch -- $option {
1196	"in" {
1197	set _view(zoom) [expr {$_view(zoom)*1.25}]
1198	SendCmd "camera zoom $_view(zoom)"
1199	}
1200	"out" {
1201	set _view(zoom) [expr {$_view(zoom)*0.8}]
1202	SendCmd "camera zoom $_view(zoom)"
1203	}
1204	"reset" {
1205	array set _view {
1206	zoom 1.0
1207	xpan 0
1208	ypan 0
1209	}
1210	SendCmd "camera reset"
1211	}
1212	}
1213	}
1214
1215	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1216	set x $_view(xpan)
1217	set y $_view(ypan)
1218	SendCmd "camera pan $x $y"
1219	}
1220
1221
1222	# ----------------------------------------------------------------------
1223	# USAGE: Rotate click <x> <y>
1224	# USAGE: Rotate drag <x> <y>
1225	# USAGE: Rotate release <x> <y>
1226	#
1227	# Called automatically when the user clicks/drags/releases in the
1228	# plot area. Moves the plot according to the user's actions.
1229	# ----------------------------------------------------------------------
1230	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1231	switch -- $option {
1232	"click" {
1233	$itk_component(view) configure -cursor fleur
1234	set _click(x) $x
1235	set _click(y) $y
1236	}
1237	"drag" {
1238	if {[array size _click] == 0} {
1239	Rotate click $x $y
1240	} else {
1241	set w [winfo width $itk_component(view)]
1242	set h [winfo height $itk_component(view)]
1243	if {$w <= 0 \|\| $h <= 0} {
1244	return
1245	}
1246
1247	if {[catch {
1248	# this fails sometimes for no apparent reason
1249	set dx [expr {double($x-$_click(x))/$w}]
1250	set dy [expr {double($y-$_click(y))/$h}]
1251	}]} {
1252	return
1253	}
1254	if { $dx == 0 && $dy == 0 } {
1255	return
1256	}
1257	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1258	EventuallyRotate $q
1259	set _click(x) $x
1260	set _click(y) $y
1261	}
1262	}
1263	"release" {
1264	Rotate drag $x $y
1265	$itk_component(view) configure -cursor ""
1266	catch {unset _click}
1267	}
1268	default {
1269	error "bad option \"$option\": should be click, drag, release"
1270	}
1271	}
1272	}
1273
1274	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1275	foreach tag [CurrentDatasets -visible] {
1276	SendCmd "dataset getscalar pixel $x $y $tag"
1277	}
1278	}
1279
1280	# ----------------------------------------------------------------------
1281	# USAGE: $this Pan click x y
1282	# $this Pan drag x y
1283	# $this Pan release x y
1284	#
1285	# Called automatically when the user clicks on one of the zoom
1286	# controls for this widget. Changes the zoom for the current view.
1287	# ----------------------------------------------------------------------
1288	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1289	switch -- $option {
1290	"set" {
1291	set w [winfo width $itk_component(view)]
1292	set h [winfo height $itk_component(view)]
1293	set x [expr $x / double($w)]
1294	set y [expr $y / double($h)]
1295	set _view(xpan) [expr $_view(xpan) + $x]
1296	set _view(ypan) [expr $_view(ypan) + $y]
1297	PanCamera
1298	return
1299	}
1300	"click" {
1301	set _click(x) $x
1302	set _click(y) $y
1303	$itk_component(view) configure -cursor hand1
1304	}
1305	"drag" {
1306	if { ![info exists _click(x)] } {
1307	set _click(x) $x
1308	}
1309	if { ![info exists _click(y)] } {
1310	set _click(y) $y
1311	}
1312	set w [winfo width $itk_component(view)]
1313	set h [winfo height $itk_component(view)]
1314	set dx [expr ($_click(x) - $x)/double($w)]
1315	set dy [expr ($_click(y) - $y)/double($h)]
1316	set _click(x) $x
1317	set _click(y) $y
1318	set _view(xpan) [expr $_view(xpan) - $dx]
1319	set _view(ypan) [expr $_view(ypan) - $dy]
1320	PanCamera
1321	}
1322	"release" {
1323	Pan drag $x $y
1324	$itk_component(view) configure -cursor ""
1325	}
1326	default {
1327	error "unknown option \"$option\": should set, click, drag, or release"
1328	}
1329	}
1330	}
1331
1332	# ----------------------------------------------------------------------
1333	# USAGE: InitSettings <what> ?<value>?
1334	#
1335	# Used internally to update rendering settings whenever parameters
1336	# change in the popup settings panel. Sends the new settings off
1337	# to the back end.
1338	# ----------------------------------------------------------------------
1339	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1340	foreach spec $args {
1341	if { [info exists _settings($_first${spec})] } {
1342	# Reset global setting with dataobj specific setting
1343	set _settings($spec) $_settings($_first${spec})
1344	}
1345	AdjustSetting $spec
1346	}
1347	}
1348
1349	#
1350	# AdjustSetting --
1351	#
1352	# Changes/updates a specific setting in the widget. There are
1353	# usually user-setable option. Commands are sent to the render
1354	# server.
1355	#
1356	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1357	if { $_beforeConnect } {
1358	return
1359	}
1360	switch -- $what {
1361	"-axisflymode" {
1362	set mode [$itk_component(axisflymode) value]
1363	set mode [$itk_component(axisflymode) translate $mode]
1364	set _settings($what) $mode
1365	SendCmd "axis flymode $mode"
1366	}
1367	"-axislabels" {
1368	set bool $_settings($what)
1369	SendCmd "axis labels all $bool"
1370	}
1371	"-axisminorticks" {
1372	set bool $_settings($what)
1373	SendCmd "axis minticks all $bool"
1374	}
1375	"-axisvisible" {
1376	set bool $_settings($what)
1377	SendCmd "axis visible all $bool"
1378	}
1379	"-xgrid" - "-ygrid" - "-zgrid" {
1380	set axis [string tolower [string range $what 1 1]]
1381	set bool $_settings($what)
1382	SendCmd "axis grid $axis $bool"
1383	}
1384	"-background" {
1385	set bg [$itk_component(background) value]
1386	array set fgcolors {
1387	"black" "white"
1388	"white" "black"
1389	"grey" "black"
1390	}
1391	set fg $fgcolors($bg)
1392	configure -plotbackground $bg -plotforeground $fg
1393	$itk_component(view) delete "legend"
1394	SendCmd "screen bgcolor [Color2RGB $bg]"
1395	SendCmd "outline color [Color2RGB $fg]"
1396	SendCmd "axis color all [Color2RGB $fg]"
1397	DrawLegend
1398	}
1399	"-colormap" {
1400	set _changed($what) 1
1401	StartBufferingCommands
1402	set color [$itk_component(colormap) value]
1403	set _settings($what) $color
1404	if { $color == "none" } {
1405	if { $_settings(-colormapvisible) } {
1406	SendCmd "heightmap surface 0"
1407	set _settings(-colormapvisible) 0
1408	}
1409	} else {
1410	if { !$_settings(-colormapvisible) } {
1411	SendCmd "heightmap surface 1"
1412	set _settings(-colormapvisible) 1
1413	}
1414	SetCurrentColormap $color
1415	if {$_settings(-colormapdiscrete)} {
1416	set numColors [expr $_settings(-numisolines) + 1]
1417	SendCmd "colormap res $numColors $color"
1418	}
1419	}
1420	StopBufferingCommands
1421	EventuallyRequestLegend
1422	}
1423	"-colormapvisible" {
1424	set bool $_settings($what)
1425	SendCmd "heightmap surface $bool"
1426	}
1427	"-colormapdiscrete" {
1428	set bool $_settings($what)
1429	set numColors [expr $_settings(-numisolines) + 1]
1430	StartBufferingCommands
1431	if {$bool} {
1432	SendCmd "colormap res $numColors"
1433	# Discrete colormap requires preinterp on
1434	SendCmd "heightmap preinterp on"
1435	} else {
1436	SendCmd "colormap res default"
1437	# FIXME: add setting for preinterp (default on)
1438	SendCmd "heightmap preinterp on"
1439	}
1440	StopBufferingCommands
1441	EventuallyRequestLegend
1442	}
1443	"-edges" {
1444	set bool $_settings($what)
1445	SendCmd "heightmap edges $bool"
1446	}
1447	"-field" {
1448	set label [$itk_component(field) value]
1449	set fname [$itk_component(field) translate $label]
1450	set _settings($what) $fname
1451	if { [info exists _fields($fname)] } {
1452	foreach { label units components } $_fields($fname) break
1453	if { $components > 1 } {
1454	set _colorMode vmag
1455	} else {
1456	set _colorMode scalar
1457	}
1458	set _curFldName $fname
1459	set _curFldLabel $label
1460	} else {
1461	puts stderr "unknown field \"$fname\""
1462	return
1463	}
1464	set label [$_first hints label]
1465	if { $label == "" } {
1466	if { [string match "component*" $_curFldName] } {
1467	set label Z
1468	} else {
1469	set label $_curFldLabel
1470	}
1471	}
1472	# May be a space in the axis label.
1473	SendCmd [list axis name z $label]
1474
1475	if { [$_first hints zunits] == "" } {
1476	set units [lindex $_fields($_curFldName) 1]
1477	} else {
1478	set units [$_first hints zunits]
1479	}
1480	if { $units != "" } {
1481	# May be a space in the axis units.
1482	SendCmd [list axis units z $units]
1483	}
1484	# Get the new limits because the field changed.
1485	ResetAxes
1486	SendCmd "dataset scalar $_curFldName"
1487	SendCmd "heightmap colormode scalar $_curFldName"
1488	Zoom reset
1489	UpdateContourList
1490	DrawLegend
1491	}
1492	"-heightmapscale" {
1493	if { $_settings(-isheightmap) } {
1494	set scale [GetHeightmapScale]
1495	# Have to set the datasets individually because we are
1496	# tracking them in _comp2scale.
1497	foreach dataset [CurrentDatasets -all] {
1498	SendCmd "heightmap heightscale $scale $dataset"
1499	set _comp2scale($dataset) $scale
1500	}
1501	ResetAxes
1502	}
1503	}
1504	"-isheightmap" {
1505	set bool $_settings($what)
1506	set c $itk_component(view)
1507	StartBufferingCommands
1508	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1509	if { $bool } {
1510	set _settings(-heightmapscale) 50
1511	set _settings(-opacity) $_settings(-saveopacity)
1512	set _settings(-lighting) $_settings(-savelighting)
1513	set _settings(-outline) 0
1514	} else {
1515	set _settings(-heightmapscale) 0
1516	set _settings(-lighting) 0
1517	set _settings(-opacity) 100
1518	set _settings(-outline) $_settings(-saveoutline)
1519	}
1520	InitSettings -lighting -opacity -outline
1521	set scale [GetHeightmapScale]
1522	# Have to set the datasets individually because we are
1523	# tracking them in _comp2scale.
1524	foreach dataset [CurrentDatasets -all] {
1525	SendCmd "heightmap heightscale $scale $dataset"
1526	set _comp2scale($dataset) $scale
1527	}
1528	if { $bool } {
1529	$itk_component(lighting) configure -state normal
1530	$itk_component(opacity) configure -state normal
1531	$itk_component(scale) configure -state normal
1532	$itk_component(opacity_l) configure -state normal
1533	$itk_component(scale_l) configure -state normal
1534	$itk_component(outline) configure -state disabled
1535	if {$_view(ortho)} {
1536	SendCmd "camera mode ortho"
1537	} else {
1538	SendCmd "camera mode persp"
1539	}
1540	} else {
1541	$itk_component(lighting) configure -state disabled
1542	$itk_component(opacity) configure -state disabled
1543	$itk_component(scale) configure -state disabled
1544	$itk_component(opacity_l) configure -state disabled
1545	$itk_component(scale_l) configure -state disabled
1546	$itk_component(outline) configure -state normal
1547	SendCmd "camera mode image"
1548	}
1549	if {$_settings(-stretchtofit)} {
1550	if {$scale == 0} {
1551	SendCmd "camera aspect window"
1552	} else {
1553	SendCmd "camera aspect square"
1554	}
1555	}
1556	ResetAxes
1557	if { $bool } {
1558	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1559	$_arcball quaternion $q
1560	SendCmd "camera orient $q"
1561	} else {
1562	bind $c <ButtonPress-1> {}
1563	bind $c <B1-Motion> {}
1564	bind $c <ButtonRelease-1> {}
1565	}
1566	Zoom reset
1567	# Fix the mouse bindings for rotation/panning and the
1568	# camera mode. Ideally we'd create a bindtag for these.
1569	if { $bool } {
1570	# Bindings for rotation via mouse
1571	bind $c <ButtonPress-1> \
1572	[itcl::code $this Rotate click %x %y]
1573	bind $c <B1-Motion> \
1574	[itcl::code $this Rotate drag %x %y]
1575	bind $c <ButtonRelease-1> \
1576	[itcl::code $this Rotate release %x %y]
1577	}
1578	StopBufferingCommands
1579	}
1580	"-isolinecolor" {
1581	set color [$itk_component(isolinecolor) value]
1582	if { $color == "none" } {
1583	if { $_settings(-isolinesvisible) } {
1584	SendCmd "heightmap isolines 0"
1585	set _settings(-isolinesvisible) 0
1586	}
1587	} else {
1588	if { !$_settings(-isolinesvisible) } {
1589	SendCmd "heightmap isolines 1"
1590	set _settings(-isolinesvisible) 1
1591	}
1592	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1593	}
1594	DrawLegend
1595	}
1596	"-isolinesvisible" {
1597	set bool $_settings($what)
1598	SendCmd "heightmap isolines $bool"
1599	DrawLegend
1600	}
1601	"-legendvisible" {
1602	if { !$_settings($what) } {
1603	$itk_component(view) delete legend
1604	}
1605	DrawLegend
1606	}
1607	"-lighting" {
1608	if { $_settings(-isheightmap) } {
1609	set _settings(-savelighting) $_settings($what)
1610	set bool $_settings($what)
1611	SendCmd "heightmap lighting $bool"
1612	} else {
1613	SendCmd "heightmap lighting 0"
1614	}
1615	}
1616	"-numisolines" {
1617	set _settings($what) [$itk_component(numisolines) value]
1618	set _currentNumIsolines $_settings($what)
1619	UpdateContourList
1620	set _changed($what) 1
1621	SendCmd "heightmap contourlist [list $_contourList]"
1622	if {$_settings(-colormapdiscrete)} {
1623	set numColors [expr $_settings($what) + 1]
1624	SendCmd "colormap res $numColors"
1625	EventuallyRequestLegend
1626	} else {
1627	DrawLegend
1628	}
1629	}
1630	"-opacity" {
1631	set _changed($what) 1
1632	set val [expr $_settings($what) * 0.01]
1633	if { $_settings(-isheightmap) } {
1634	set _settings(-saveopacity) $_settings($what)
1635	SendCmd "heightmap opacity $val"
1636	} else {
1637	SendCmd "heightmap opacity 1.0"
1638	}
1639	}
1640	"-outline" {
1641	if { $_settings(-isheightmap) } {
1642	SendCmd "outline visible 0"
1643	} else {
1644	set _settings(-saveoutline) $_settings($what)
1645	set bool $_settings($what)
1646	SendCmd "outline visible $bool"
1647	}
1648	}
1649	"-stretchtofit" {
1650	set bool $_settings($what)
1651	if { $bool } {
1652	set heightScale [GetHeightmapScale]
1653	if {$heightScale == 0} {
1654	SendCmd "camera aspect window"
1655	} else {
1656	SendCmd "camera aspect square"
1657	}
1658	} else {
1659	SendCmd "camera aspect native"
1660	}
1661	Zoom reset
1662	}
1663	"-wireframe" {
1664	set bool $_settings($what)
1665	SendCmd "heightmap wireframe $bool"
1666	}
1667	default {
1668	error "don't know how to fix $what"
1669	}
1670	}
1671	}
1672
1673	#
1674	# RequestLegend --
1675	#
1676	# Request a new legend from the server. The size of the legend
1677	# is determined from the height of the canvas.
1678	#
1679	# This should be called when
1680	# 1. A new current colormap is set.
1681	# 2. Window is resized.
1682	# 3. The limits of the data have changed. (Just need a redraw).
1683	# 4. Number of isolines have changed. (Just need a redraw).
1684	# 5. Legend becomes visible (Just need a redraw).
1685	#
1686	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1687	set _legendPending 0
1688	set font "Arial 8"
1689	set w 12
1690	set lineht [font metrics $font -linespace]
1691	# color ramp height = (canvas height) - (min and max value lines) - 2
1692	set h [expr {$_height - 2 * ($lineht + 2)}]
1693	set _legendHeight $h
1694
1695	set fname $_curFldName
1696	if { [string match "component*" $fname] } {
1697	set title ""
1698	} else {
1699	if { [info exists _fields($fname)] } {
1700	foreach { title units } $_fields($fname) break
1701	if { $units != "" } {
1702	set title [format "%s (%s)" $title $units]
1703	}
1704	} else {
1705	set title $fname
1706	}
1707	}
1708	# If there's a title too, substract one more line
1709	if { $title != "" } {
1710	incr h -$lineht
1711	}
1712	if { $h < 1 } {
1713	return
1714	}
1715	# Set the legend on the first heightmap dataset.
1716	if { $_currentColormap != "" } {
1717	set cmap $_currentColormap
1718	SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1719	}
1720	}
1721
1722	#
1723	# ResetAxes --
1724	#
1725	# Set axis z bounds and range
1726	#
1727	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1728	if { ![info exists _limits($_curFldName)]} {
1729	SendCmd "dataset maprange all"
1730	SendCmd "axis autorange z on"
1731	SendCmd "axis autobounds z on"
1732	return
1733	}
1734	foreach { xmin xmax } $_limits(x) break
1735	foreach { ymin ymax } $_limits(y) break
1736	foreach { vmin vmax } $_limits($_curFldName) break
1737
1738	global tcl_precision
1739	set tcl_precision 17
1740	set xr [expr $xmax - $xmin]
1741	set yr [expr $ymax - $ymin]
1742	set vr [expr $vmax - $vmin]
1743	set r [expr ($yr > $xr) ? $yr : $xr]
1744	if { $vr < 1.0e-17 } {
1745	set dataScale 1.0
1746	} else {
1747	set dataScale [expr $r / $vr]
1748	}
1749	set heightScale [GetHeightmapScale]
1750	set bmin [expr $heightScale * $dataScale * $vmin]
1751	set bmax [expr $heightScale * $dataScale * $vmax]
1752	if {$heightScale > 0} {
1753	set zpos [expr - $bmin]
1754	SendCmd "heightmap pos 0 0 $zpos"
1755	} else {
1756	SendCmd "heightmap pos 0 0 0"
1757	}
1758	set bmax [expr $bmax - $bmin]
1759	set bmin 0
1760	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1761	SendCmd "axis bounds z $bmin $bmax"
1762	SendCmd "axis range z $_limits($_curFldName)"
1763	}
1764
1765	#
1766	# SetCurrentColormap --
1767	#
1768	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1769	# Keep track of the colormaps that we build.
1770	if { $name != "none" && ![info exists _colormaps($name)] } {
1771	BuildColormap $name
1772	set _colormaps($name) 1
1773	}
1774	set _currentColormap $name
1775	SendCmd "heightmap colormap $_currentColormap"
1776	}
1777
1778
1779	#
1780	# BuildColormap --
1781	#
1782	# Build the designated colormap on the server.
1783	#
1784	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1785	set cmap [ColorsToColormap $name]
1786	if { [llength $cmap] == 0 } {
1787	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1788	}
1789	set wmap "0.0 1.0 1.0 1.0"
1790	SendCmd "colormap add $name { $cmap } { $wmap }"
1791	}
1792
1793	# ----------------------------------------------------------------------
1794	# CONFIGURATION OPTION: -mode
1795	# ----------------------------------------------------------------------
1796	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1797	switch -- $itk_option(-mode) {
1798	"heightmap" {
1799	set _settings(-isheightmap) 1
1800	}
1801	"contour" {
1802	set _settings(-isheightmap) 0
1803	}
1804	default {
1805	error "unknown mode settings \"$itk_option(-mode)\""
1806	}
1807	}
1808	if { !$_reset } {
1809	AdjustSetting -isheightmap
1810	}
1811	}
1812
1813	# ----------------------------------------------------------------------
1814	# CONFIGURATION OPTION: -plotbackground
1815	# ----------------------------------------------------------------------
1816	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1817	if { [isconnected] } {
1818	set rgb [Color2RGB $itk_option(-plotbackground)]
1819	if { !$_reset } {
1820	SendCmd "screen bgcolor $rgb"
1821	}
1822	$itk_component(view) configure -background $itk_option(-plotbackground)
1823	}
1824	}
1825
1826	# ----------------------------------------------------------------------
1827	# CONFIGURATION OPTION: -plotforeground
1828	# ----------------------------------------------------------------------
1829	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1830	if { [isconnected] } {
1831	set rgb [Color2RGB $itk_option(-plotforeground)]
1832	if { !$_reset } {
1833	SendCmd "outline color $rgb"
1834	SendCmd "axis color all $rgb"
1835	}
1836	}
1837	}
1838
1839	itcl::body Rappture::VtkHeightmapViewer::limits3 { dataobj } {
1840	lappend limits x [$dataobj limits x]
1841	lappend limits y [$dataobj limits y]
1842	if { [catch { $dataobj limits $_curFldName } vlim] != 0 } {
1843	set vlim [$dataobj limits v]
1844	}
1845	lappend limits v $vlim
1846	return $limits
1847	}
1848
1849	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1850
1851	set fg [option get $itk_component(hull) font Font]
1852	#set bfg [option get $itk_component(hull) boldFont Font]
1853
1854	set inner [$itk_component(main) insert end \
1855	-title "Contour/Surface Settings" \
1856	-icon [Rappture::icon contour2]]
1857	$inner configure -borderwidth 4
1858
1859	checkbutton $inner.legend \
1860	-text "Legend" \
1861	-variable [itcl::scope _settings(-legendvisible)] \
1862	-command [itcl::code $this AdjustSetting -legendvisible] \
1863	-font "Arial 9"
1864
1865	checkbutton $inner.wireframe \
1866	-text "Wireframe" \
1867	-variable [itcl::scope _settings(-wireframe)] \
1868	-command [itcl::code $this AdjustSetting -wireframe] \
1869	-font "Arial 9"
1870
1871	itk_component add lighting {
1872	checkbutton $inner.lighting \
1873	-text "Enable Lighting" \
1874	-variable [itcl::scope _settings(-lighting)] \
1875	-command [itcl::code $this AdjustSetting -lighting] \
1876	-font "Arial 9"
1877	} {
1878	ignore -font
1879	}
1880	checkbutton $inner.edges \
1881	-text "Edges" \
1882	-variable [itcl::scope _settings(-edges)] \
1883	-command [itcl::code $this AdjustSetting -edges] \
1884	-font "Arial 9"
1885
1886	itk_component add outline {
1887	checkbutton $inner.outline \
1888	-text "Outline" \
1889	-variable [itcl::scope _settings(-outline)] \
1890	-command [itcl::code $this AdjustSetting -outline] \
1891	-font "Arial 9"
1892	} {
1893	ignore -font
1894	}
1895	checkbutton $inner.stretch \
1896	-text "Stretch to fit" \
1897	-variable [itcl::scope _settings(-stretchtofit)] \
1898	-command [itcl::code $this AdjustSetting -stretchtofit] \
1899	-font "Arial 9"
1900
1901	checkbutton $inner.isolines \
1902	-text "Isolines" \
1903	-variable [itcl::scope _settings(-isolinesvisible)] \
1904	-command [itcl::code $this AdjustSetting -isolinesvisible] \
1905	-font "Arial 9"
1906
1907	checkbutton $inner.colormapDiscrete \
1908	-text "Discrete Colormap" \
1909	-variable [itcl::scope _settings(-colormapdiscrete)] \
1910	-command [itcl::code $this AdjustSetting -colormapdiscrete] \
1911	-font "Arial 9"
1912
1913	itk_component add field_l {
1914	label $inner.field_l -text "Field" -font "Arial 9"
1915	} {
1916	ignore -font
1917	}
1918	itk_component add field {
1919	Rappture::Combobox $inner.field -width 10 -editable no
1920	}
1921	bind $inner.field <<Value>> \
1922	[itcl::code $this AdjustSetting -field]
1923
1924	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1925	itk_component add colormap {
1926	Rappture::Combobox $inner.colormap -width 10 -editable no
1927	}
1928	$inner.colormap choices insert end [GetColormapList -includeNone]
1929	$itk_component(colormap) value $_settings(-colormap)
1930	bind $inner.colormap <<Value>> \
1931	[itcl::code $this AdjustSetting -colormap]
1932
1933	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1934	itk_component add isolinecolor {
1935	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1936	}
1937	$inner.isolinecolor choices insert end \
1938	"black" "black" \
1939	"blue" "blue" \
1940	"cyan" "cyan" \
1941	"green" "green" \
1942	"grey" "grey" \
1943	"magenta" "magenta" \
1944	"orange" "orange" \
1945	"red" "red" \
1946	"white" "white" \
1947	"none" "none"
1948
1949	$itk_component(isolinecolor) value $_settings(-isolinecolor)
1950	bind $inner.isolinecolor <<Value>> \
1951	[itcl::code $this AdjustSetting -isolinecolor]
1952
1953	label $inner.background_l -text "Background Color" -font "Arial 9"
1954	itk_component add background {
1955	Rappture::Combobox $inner.background -width 10 -editable no
1956	}
1957	$inner.background choices insert end \
1958	"black" "black" \
1959	"white" "white" \
1960	"grey" "grey"
1961
1962	$itk_component(background) value "white"
1963	bind $inner.background <<Value>> \
1964	[itcl::code $this AdjustSetting -background]
1965
1966	itk_component add opacity_l {
1967	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1968	} {
1969	ignore -font
1970	}
1971	itk_component add opacity {
1972	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1973	-variable [itcl::scope _settings(-opacity)] \
1974	-showvalue off \
1975	-command [itcl::code $this AdjustSetting -opacity]
1976	}
1977	itk_component add scale_l {
1978	label $inner.scale_l -text "Scale" -font "Arial 9"
1979	} {
1980	ignore -font
1981	}
1982	itk_component add scale {
1983	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1984	-variable [itcl::scope _settings(-heightmapscale)] \
1985	-showvalue off \
1986	-command [itcl::code $this AdjustSetting -heightmapscale]
1987	}
1988	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1989	itk_component add numisolines {
1990	Rappture::Spinint $inner.numisolines \
1991	-min 0 -max 50 -font "arial 9"
1992	}
1993	$itk_component(numisolines) value $_settings(-numisolines)
1994	bind $itk_component(numisolines) <<Value>> \
1995	[itcl::code $this AdjustSetting -numisolines]
1996
1997	frame $inner.separator1 -height 2 -relief sunken -bd 1
1998	frame $inner.separator2 -height 2 -relief sunken -bd 1
1999
2000	blt::table $inner \
2001	0,0 $inner.field_l -anchor w -pady 2 \
2002	0,1 $inner.field -anchor w -pady 2 -fill x \
2003	1,0 $inner.colormap_l -anchor w -pady 2 \
2004	1,1 $inner.colormap -anchor w -pady 2 -fill x \
2005	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
2006	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
2007	3,0 $inner.background_l -anchor w -pady 2 \
2008	3,1 $inner.background -anchor w -pady 2 -fill x \
2009	4,0 $inner.numisolines_l -anchor w -pady 2 \
2010	4,1 $inner.numisolines -anchor w -pady 2 \
2011	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
2012	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
2013	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
2014	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
2015	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
2016	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
2017	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
2018	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
2019	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
2020	14,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
2021	15,0 $inner.opacity_l -anchor w -pady 2 \
2022	15,1 $inner.opacity -fill x -pady 2 \
2023	16,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
2024	16,1 $inner.scale -fill x -pady 2 -cspan 2 \
2025
2026	blt::table configure $inner r* c* -resize none
2027	blt::table configure $inner r17 c1 -resize expand
2028	}
2029
2030	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
2031
2032	set fg [option get $itk_component(hull) font Font]
2033	#set bfg [option get $itk_component(hull) boldFont Font]
2034
2035	set inner [$itk_component(main) insert end \
2036	-title "Axis Settings" \
2037	-icon [Rappture::icon axis2]]
2038	$inner configure -borderwidth 4
2039
2040	checkbutton $inner.visible \
2041	-text "Axes" \
2042	-variable [itcl::scope _settings(-axisvisible)] \
2043	-command [itcl::code $this AdjustSetting -axisvisible] \
2044	-font "Arial 9"
2045	checkbutton $inner.labels \
2046	-text "Axis Labels" \
2047	-variable [itcl::scope _settings(-axislabels)] \
2048	-command [itcl::code $this AdjustSetting -axislabels] \
2049	-font "Arial 9"
2050	label $inner.grid_l -text "Grid" -font "Arial 9"
2051	checkbutton $inner.xgrid \
2052	-text "X" \
2053	-variable [itcl::scope _settings(-xgrid)] \
2054	-command [itcl::code $this AdjustSetting -xgrid] \
2055	-font "Arial 9"
2056	checkbutton $inner.ygrid \
2057	-text "Y" \
2058	-variable [itcl::scope _settings(-ygrid)] \
2059	-command [itcl::code $this AdjustSetting -ygrid] \
2060	-font "Arial 9"
2061	checkbutton $inner.zgrid \
2062	-text "Z" \
2063	-variable [itcl::scope _settings(-zgrid)] \
2064	-command [itcl::code $this AdjustSetting -zgrid] \
2065	-font "Arial 9"
2066	checkbutton $inner.minorticks \
2067	-text "Minor Ticks" \
2068	-variable [itcl::scope _settings(-axisminorticks)] \
2069	-command [itcl::code $this AdjustSetting -axisminorticks] \
2070	-font "Arial 9"
2071
2072	label $inner.mode_l -text "Mode" -font "Arial 9"
2073
2074	itk_component add axisflymode {
2075	Rappture::Combobox $inner.mode -width 10 -editable no
2076	}
2077	$inner.mode choices insert end \
2078	"static_triad" "static" \
2079	"closest_triad" "closest" \
2080	"furthest_triad" "farthest" \
2081	"outer_edges" "outer"
2082	$itk_component(axisflymode) value $_settings(-axisflymode)
2083	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
2084
2085	blt::table $inner \
2086	0,0 $inner.visible -anchor w -cspan 4 \
2087	1,0 $inner.labels -anchor w -cspan 4 \
2088	2,0 $inner.minorticks -anchor w -cspan 4 \
2089	4,0 $inner.grid_l -anchor w \
2090	4,1 $inner.xgrid -anchor w \
2091	4,2 $inner.ygrid -anchor w \
2092	4,3 $inner.zgrid -anchor w \
2093	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2094	5,1 $inner.mode -fill x -cspan 3
2095
2096	blt::table configure $inner r* c* -resize none
2097	blt::table configure $inner r7 c6 -resize expand
2098	blt::table configure $inner r3 -height 0.125i
2099	}
2100
2101
2102	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2103	set inner [$itk_component(main) insert end \
2104	-title "Camera Settings" \
2105	-icon [Rappture::icon camera]]
2106	$inner configure -borderwidth 4
2107
2108	label $inner.view_l -text "view" -font "Arial 9"
2109	set f [frame $inner.view]
2110	foreach side { front back left right top bottom } {
2111	button $f.$side -image [Rappture::icon view$side] \
2112	-command [itcl::code $this SetOrientation $side]
2113	Rappture::Tooltip::for $f.$side "Change the view to $side"
2114	pack $f.$side -side left
2115	}
2116
2117	blt::table $inner \
2118	0,0 $inner.view_l -anchor e -pady 2 \
2119	0,1 $inner.view -anchor w -pady 2
2120
2121	set labels { qx qy qz qw xpan ypan zoom }
2122	set row 1
2123	foreach tag $labels {
2124	label $inner.${tag}label -text $tag -font "Arial 9"
2125	entry $inner.${tag} -font "Arial 9" -bg white \
2126	-textvariable [itcl::scope _view($tag)]
2127	bind $inner.${tag} <Return> \
2128	[itcl::code $this camera set ${tag}]
2129	bind $inner.${tag} <KP_Enter> \
2130	[itcl::code $this camera set ${tag}]
2131	blt::table $inner \
2132	$row,0 $inner.${tag}label -anchor e -pady 2 \
2133	$row,1 $inner.${tag} -anchor w -pady 2
2134	blt::table configure $inner r$row -resize none
2135	incr row
2136	}
2137	checkbutton $inner.ortho \
2138	-text "Orthographic Projection" \
2139	-variable [itcl::scope _view(ortho)] \
2140	-command [itcl::code $this camera set ortho] \
2141	-font "Arial 9"
2142	blt::table $inner \
2143	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2144	blt::table configure $inner r$row -resize none
2145	incr row
2146
2147	blt::table configure $inner c* r* -resize none
2148	blt::table configure $inner c2 -resize expand
2149	blt::table configure $inner r$row -resize expand
2150	}
2151
2152	#
2153	# camera --
2154	#
2155	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2156	switch -- $option {
2157	"show" {
2158	puts [array get _view]
2159	}
2160	"set" {
2161	set who [lindex $args 0]
2162	set x $_view($who)
2163	set code [catch { string is double $x } result]
2164	if { $code != 0 \|\| !$result } {
2165	return
2166	}
2167	switch -- $who {
2168	"ortho" {
2169	if {$_view(ortho)} {
2170	SendCmd "camera mode ortho"
2171	} else {
2172	SendCmd "camera mode persp"
2173	}
2174	}
2175	"xpan" - "ypan" {
2176	PanCamera
2177	}
2178	"qx" - "qy" - "qz" - "qw" {
2179	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2180	$_arcball quaternion $q
2181	EventuallyRotate $q
2182	}
2183	"zoom" {
2184	SendCmd "camera zoom $_view(zoom)"
2185	}
2186	}
2187	}
2188	}
2189	}
2190
2191	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2192	set bytes ""
2193	foreach dataobj [get] {
2194	foreach comp [$dataobj components] {
2195	set tag $dataobj-$comp
2196	set contents [$dataobj vtkdata $comp]
2197	append bytes "$contents\n"
2198	}
2199	}
2200	return [list .vtk $bytes]
2201	}
2202
2203	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2204	if { [image width $_image(download)] > 0 &&
2205	[image height $_image(download)] > 0 } {
2206	set bytes [$_image(download) data -format "jpeg -quality 100"]
2207	set bytes [Rappture::encoding::decode -as b64 $bytes]
2208	return [list .jpg $bytes]
2209	}
2210	return ""
2211	}
2212
2213	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2214	Rappture::Balloon $popup \
2215	-title "[Rappture::filexfer::label downloadWord] as..."
2216	set inner [$popup component inner]
2217	label $inner.summary -text "" -anchor w
2218	radiobutton $inner.vtk_button -text "VTK data file" \
2219	-variable [itcl::scope _downloadPopup(format)] \
2220	-font "Arial 9 " \
2221	-value vtk
2222	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2223	radiobutton $inner.image_button -text "Image File" \
2224	-variable [itcl::scope _downloadPopup(format)] \
2225	-font "Arial 9 " \
2226	-value image
2227	Rappture::Tooltip::for $inner.image_button \
2228	"Save as digital image."
2229
2230	button $inner.ok -text "Save" \
2231	-highlightthickness 0 -pady 2 -padx 3 \
2232	-command $command \
2233	-compound left \
2234	-image [Rappture::icon download]
2235
2236	button $inner.cancel -text "Cancel" \
2237	-highlightthickness 0 -pady 2 -padx 3 \
2238	-command [list $popup deactivate] \
2239	-compound left \
2240	-image [Rappture::icon cancel]
2241
2242	blt::table $inner \
2243	0,0 $inner.summary -cspan 2 \
2244	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2245	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2246	4,1 $inner.cancel -width .9i -fill y \
2247	4,0 $inner.ok -padx 2 -width .9i -fill y
2248	blt::table configure $inner r3 -height 4
2249	blt::table configure $inner r4 -pady 4
2250	raise $inner.image_button
2251	$inner.vtk_button invoke
2252	return $inner
2253	}
2254
2255	#
2256	# SetObjectStyle --
2257	#
2258	# Set the style of the heightmap/contour object. This gets calls
2259	# for each dataset once as it is loaded. It can overridden by
2260	# the user controls.
2261	#
2262	#
2263	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2264	# Parse style string.
2265	set tag $dataobj-$comp
2266	array set style {
2267	-color BCGYR
2268	-levels 10
2269	-opacity 1.0
2270	}
2271	set stylelist [$dataobj style $comp]
2272	if { $stylelist != "" } {
2273	array set style $stylelist
2274	}
2275	# This is too complicated. We want to set the colormap, number of
2276	# isolines and opacity for the dataset. They can be the default values,
2277	# the style hints loaded with the dataset, or set by user controls. As
2278	# datasets get loaded, they first use the defaults that are overidden
2279	# by the style hints. If the user changes the global controls, then that
2280	# overrides everything else. I don't know what it means when global
2281	# controls are specified as style hints by each dataset. It complicates
2282	# the code to handle aberrant cases.
2283
2284	if { $_changed(-opacity) } {
2285	set style(-opacity) [expr $_settings(-opacity) * 0.01]
2286	}
2287	if { $_changed(-numisolines) } {
2288	set style(-levels) $_settings(-numisolines)
2289	}
2290	if { $_changed(-colormap) } {
2291	set style(-color) $_settings(-colormap)
2292	}
2293	if { $_currentColormap == "" } {
2294	$itk_component(colormap) value $style(-color)
2295	}
2296	if { [info exists style(-stretchtofit)] } {
2297	set _settings(-stretchtofit) $style(-stretchtofit)
2298	AdjustSetting -stretchtofit
2299	}
2300	if { $_currentNumIsolines != $style(-levels) } {
2301	set _currentNumIsolines $style(-levels)
2302	set _settings(-numisolines) $_currentNumIsolines
2303	$itk_component(numisolines) value $_currentNumIsolines
2304	UpdateContourList
2305	DrawLegend
2306	}
2307	SendCmd "outline add $tag"
2308	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2309	SendCmd "outline visible $_settings(-outline) $tag"
2310	set scale [GetHeightmapScale]
2311	SendCmd "[list heightmap add contourlist $_contourList $scale $tag]"
2312	set _comp2scale($tag) $_settings(-heightmapscale)
2313	SendCmd "heightmap edges $_settings(-edges) $tag"
2314	SendCmd "heightmap wireframe $_settings(-wireframe) $tag"
2315	SetCurrentColormap $style(-color)
2316	set color [$itk_component(isolinecolor) value]
2317	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2318	SendCmd "heightmap lighting $_settings(-isheightmap) $tag"
2319	SendCmd "heightmap isolines $_settings(-isolinesvisible) $tag"
2320	SendCmd "heightmap surface $_settings(-colormapvisible) $tag"
2321	SendCmd "heightmap opacity $style(-opacity) $tag"
2322	set _settings(-opacity) [expr $style(-opacity) * 100.0]
2323	}
2324
2325	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2326	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2327	return 0
2328	}
2329	return 1
2330	}
2331
2332	# ----------------------------------------------------------------------
2333	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2334	#
2335	# Invoked automatically whenever the "legend" command comes in from
2336	# the rendering server. Indicates that binary image data with the
2337	# specified <size> will follow.
2338	# ----------------------------------------------------------------------
2339	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2340	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2341	if { [isconnected] } {
2342	set bytes [ReceiveBytes $size]
2343	if { ![info exists _image(legend)] } {
2344	set _image(legend) [image create photo]
2345	}
2346	$_image(legend) configure -data $bytes
2347	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2348	if { [catch {DrawLegend} errs] != 0 } {
2349	global errorInfo
2350	puts stderr "errs=$errs errorInfo=$errorInfo"
2351	}
2352	}
2353	}
2354
2355	#
2356	# DrawLegend --
2357	#
2358	# Draws the legend in the own canvas on the right side of the plot area.
2359	#
2360	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2361	set fname $_curFldName
2362	set c $itk_component(view)
2363	set w [winfo width $c]
2364	set h [winfo height $c]
2365	set font "Arial 8"
2366	set lineht [font metrics $font -linespace]
2367
2368	if { [string match "component*" $fname] } {
2369	set title ""
2370	} else {
2371	if { [info exists _fields($fname)] } {
2372	foreach { title units } $_fields($fname) break
2373	if { $units != "" } {
2374	set title [format "%s (%s)" $title $units]
2375	}
2376	} else {
2377	set title $fname
2378	}
2379	}
2380	set x [expr $w - 2]
2381	if { !$_settings(-legendvisible) } {
2382	$c delete legend
2383	return
2384	}
2385	if { [$c find withtag "legend"] == "" } {
2386	set y 2
2387	# If there's a legend title, create a text item for the title.
2388	$c create text $x $y \
2389	-anchor ne \
2390	-fill $itk_option(-plotforeground) -tags "title legend" \
2391	-font $font
2392	if { $title != "" } {
2393	incr y $lineht
2394	}
2395	$c create text $x $y \
2396	-anchor ne \
2397	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2398	-font $font
2399	incr y $lineht
2400	$c create image $x $y \
2401	-anchor ne \
2402	-image $_image(legend) -tags "colormap legend"
2403	$c create rectangle $x $y 1 1 \
2404	-fill "" -outline "" -tags "sensor legend"
2405	$c create text $x [expr {$h-2}] \
2406	-anchor se \
2407	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2408	-font $font
2409	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2410	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2411	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2412	}
2413	$c delete isoline
2414	set x2 $x
2415	set iw [image width $_image(legend)]
2416	set ih [image height $_image(legend)]
2417	set x1 [expr $x2 - ($iw*12)/10]
2418	set color [$itk_component(isolinecolor) value]
2419
2420	# Draw the isolines on the legend.
2421	array unset _isolines
2422	if { $color != "none" && [info exists _limits($_curFldName)] &&
2423	$_settings(-isolinesvisible) && $_currentNumIsolines > 0 } {
2424
2425	foreach { vmin vmax } $_limits($_curFldName) break
2426	set range [expr double($vmax - $vmin)]
2427	if { $range <= 0.0 } {
2428	set range 1.0; # Min is greater or equal to max.
2429	}
2430	set tags "isoline legend"
2431	set offset [expr 2 + $lineht]
2432	if { $title != "" } {
2433	incr offset $lineht
2434	}
2435	foreach value $_contourList {
2436	set norm [expr 1.0 - (($value - $vmin) / $range)]
2437	set y1 [expr int(round(($norm * $ih) + $offset))]
2438	for { set off 0 } { $off < 3 } { incr off } {
2439	set _isolines([expr $y1 + $off]) $value
2440	set _isolines([expr $y1 - $off]) $value
2441	}
2442	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2443	}
2444	}
2445
2446	$c bind title <ButtonPress> [itcl::code $this Combo post]
2447	$c bind title <Enter> [itcl::code $this Combo activate]
2448	$c bind title <Leave> [itcl::code $this Combo deactivate]
2449	# Reset the item coordinates according the current size of the plot.
2450	if { [info exists _limits($_curFldName)] } {
2451	foreach { vmin vmax } $_limits($_curFldName) break
2452	$c itemconfigure vmin -text [format %g $vmin]
2453	$c itemconfigure vmax -text [format %g $vmax]
2454	}
2455	set y 2
2456	# If there's a legend title, move the title to the correct position
2457	if { $title != "" } {
2458	$c itemconfigure title -text $title
2459	$c coords title $x $y
2460	incr y $lineht
2461	}
2462	$c coords vmax $x $y
2463	incr y $lineht
2464	$c coords colormap $x $y
2465	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2466	$c raise sensor
2467	$c coords vmin $x [expr {$h - 2}]
2468	}
2469
2470	#
2471	# EnterLegend --
2472	#
2473	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2474	SetLegendTip $x $y
2475	}
2476
2477	#
2478	# MotionLegend --
2479	#
2480	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2481	Rappture::Tooltip::tooltip cancel
2482	set c $itk_component(view)
2483	set cw [winfo width $c]
2484	set ch [winfo height $c]
2485	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2486	SetLegendTip $x $y
2487	}
2488	}
2489
2490	#
2491	# LeaveLegend --
2492	#
2493	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2494	Rappture::Tooltip::tooltip cancel
2495	.rappturetooltip configure -icon ""
2496	}
2497
2498	#
2499	# SetLegendTip --
2500	#
2501	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2502	set fname $_curFldName
2503	set c $itk_component(view)
2504	set w [winfo width $c]
2505	set h [winfo height $c]
2506	set font "Arial 8"
2507	set lineht [font metrics $font -linespace]
2508
2509	set ih [image height $_image(legend)]
2510	# Subtract off the offset of the color ramp from the top of the canvas
2511	set iy [expr $y - ($lineht + 2)]
2512
2513	if { [string match "component*" $fname] } {
2514	set title ""
2515	} else {
2516	if { [info exists _fields($fname)] } {
2517	foreach { title units } $_fields($fname) break
2518	if { $units != "" } {
2519	set title [format "%s (%s)" $title $units]
2520	}
2521	} else {
2522	set title $fname
2523	}
2524	}
2525	# If there's a legend title, increase the offset by the line height.
2526	if { $title != "" } {
2527	incr iy -$lineht
2528	}
2529
2530	# Make a swatch of the selected color
2531	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2532	return
2533	}
2534
2535	if { ![info exists _image(swatch)] } {
2536	set _image(swatch) [image create photo -width 24 -height 24]
2537	}
2538	set color [eval format "\#%02x%02x%02x" $pixel]
2539	$_image(swatch) put black -to 0 0 23 23
2540	$_image(swatch) put $color -to 1 1 22 22
2541
2542	# Compute the value of the point
2543	if { [info exists _limits($fname)] } {
2544	foreach { vmin vmax } $_limits($fname) break
2545	set t [expr 1.0 - (double($iy) / double($ih-1))]
2546	set value [expr $t * ($vmax - $vmin) + $vmin]
2547	} else {
2548	set value 0.0
2549	}
2550	set tipx [expr $x + 15]
2551	set tipy [expr $y - 5]
2552	.rappturetooltip configure -icon $_image(swatch)
2553	if { [info exists _isolines($y)] } {
2554	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2555	} else {
2556	Rappture::Tooltip::text $c [format "$title %g" $value]
2557	}
2558	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2559	}
2560
2561	# ----------------------------------------------------------------------
2562	# USAGE: _dropdown post
2563	# USAGE: _dropdown unpost
2564	# USAGE: _dropdown select
2565	#
2566	# Used internally to handle the dropdown list for this combobox. The
2567	# post/unpost options are invoked when the list is posted or unposted
2568	# to manage the relief of the controlling button. The select option
2569	# is invoked whenever there is a selection from the list, to assign
2570	# the value back to the gauge.
2571	# ----------------------------------------------------------------------
2572	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2573	set c $itk_component(view)
2574	switch -- $option {
2575	post {
2576	foreach { x1 y1 x2 y2 } [$c bbox title] break
2577	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2578	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2579	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2580	tk_popup $itk_component(fieldmenu) $x $y
2581	}
2582	activate {
2583	$c itemconfigure title -fill red
2584	}
2585	deactivate {
2586	$c itemconfigure title -fill $itk_option(-plotforeground)
2587	}
2588	invoke {
2589	$itk_component(field) value $_curFldLabel
2590	AdjustSetting -field
2591	}
2592	default {
2593	error "bad option \"$option\": should be post, unpost, select"
2594	}
2595	}
2596	}
2597
2598	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2599	if { $_settings(-isheightmap) } {
2600	set val $_settings(-heightmapscale)
2601	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2602	return $sval
2603	}
2604	return 0
2605	}
2606
2607	itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2608	array set positions {
2609	front "0.707107 0.707107 0 0"
2610	back "0 0 0.707107 0.707107"
2611	left "0.5 0.5 -0.5 -0.5"
2612	right "0.5 0.5 0.5 0.5"
2613	top "1 0 0 0"
2614	bottom "0 1 0 0"
2615	}
2616	foreach name { qw qx qy qz } value $positions($side) {
2617	set _view($name) $value
2618	}
2619	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2620	$_arcball quaternion $q
2621	SendCmd "camera orient $q"
2622	SendCmd "camera reset"
2623	set _view(xpan) 0
2624	set _view(ypan) 0
2625	set _view(zoom) 1.0
2626	}
2627
2628	itcl::body Rappture::VtkHeightmapViewer::UpdateContourList {} {
2629	if {$_currentNumIsolines == 0} {
2630	set _contourList ""
2631	return
2632	}
2633	if { ![info exists _limits($_curFldName)] } {
2634	return
2635	}
2636	foreach { vmin vmax } $_limits($_curFldName) break
2637	set v [blt::vector create \#auto]
2638	$v seq $vmin $vmax [expr $_currentNumIsolines+2]
2639	$v delete end 0
2640	set _contourList [$v range 0 end]
2641	blt::vector destroy $v
2642	}

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