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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 4699

Last change on this file since 4699 was 4699, checked in by ldelgass, 10 years ago
remove unused limits methods
File size: 87.6 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkheightmapviewer - Vtk heightmap viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2014 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkHeightmapViewer.width 4i widgetDefault
19	option add VtkHeightmapViewercursor crosshair widgetDefault
20	option add *VtkHeightmapViewer.height 4i widgetDefault
21	option add *VtkHeightmapViewer.foreground black widgetDefault
22	option add *VtkHeightmapViewer.controlBackground gray widgetDefault
23	option add *VtkHeightmapViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkHeightmapViewer.plotBackground black widgetDefault
25	option add *VtkHeightmapViewer.plotForeground white widgetDefault
26	option add *VtkHeightmapViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkHeightmapViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkHeightmapViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkHeightmapViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40	itk_option define -mode mode Mode "contour"
41
42	constructor { hostlist args } {
43	Rappture::VisViewer::constructor $hostlist
44	} {
45	# defined below
46	}
47	destructor {
48	# defined below
49	}
50	public proc SetServerList { namelist } {
51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
52	}
53	public method add {dataobj {settings ""}}
54	public method camera {option args}
55	public method delete {args}
56	public method disconnect {}
57	public method download {option args}
58	public method get {args}
59	public method isconnected {}
60	public method parameters {title args} {
61	# do nothing
62	}
63	public method scale {args}
64
65	protected method CameraReset {}
66	protected method Connect {}
67	protected method CurrentDatasets {args}
68	protected method Disconnect {}
69	protected method DoResize {}
70	protected method DoRotate {}
71	protected method AdjustSetting {what {value ""}}
72	protected method AdjustMode {}
73	protected method InitSettings { args }
74	protected method Pan {option x y}
75	protected method Pick {x y}
76	protected method Rebuild {}
77	protected method ReceiveDataset { args }
78	protected method ReceiveImage { args }
79	protected method ReceiveLegend { colormap title min max size }
80	protected method Rotate {option x y}
81	protected method Zoom {option}
82
83	# The following methods are only used by this class.
84	private method BuildAxisTab {}
85	private method BuildCameraTab {}
86	private method BuildColormap { name }
87	private method BuildContourTab {}
88	private method BuildDownloadPopup { widget command }
89	private method Combo { option }
90	private method DrawLegend {}
91	private method EnterLegend { x y }
92	private method EventuallyRequestLegend {}
93	private method EventuallyResize { w h }
94	private method EventuallyRotate { q }
95	private method GetImage { args }
96	private method GetVtkData { args }
97	private method IsValidObject { dataobj }
98	private method LeaveLegend {}
99	private method MotionLegend { x y }
100	private method PanCamera {}
101	private method RequestLegend {}
102	private method SetCurrentColormap { color }
103	private method SetLegendTip { x y }
104	private method SetObjectStyle { dataobj comp }
105	private method GetHeightmapScale {}
106	private method ResetAxes {}
107	private method SetOrientation { side }
108	private method UpdateContourList {}
109
110	private variable _arcball ""
111	private variable _dlist "" ; # list of data objects
112	private variable _obj2datasets
113	private variable _obj2ovride ; # maps dataobj => style override
114	private variable _comp2scale; # maps dataset to the heightmap scale.
115	private variable _datasets ; # contains all the dataobj-component
116	; # datasets in the server
117	private variable _colormaps ; # contains all the colormaps
118	; # in the server.
119
120	# The name of the current colormap used. The colormap is global to all
121	# heightmaps displayed.
122	private variable _currentColormap ""
123	private variable _currentNumIsolines -1
124
125	private variable _maxScale 100; # This is the # of times the x-axis
126	# and y-axis ranges can differ before
127	# automatically turning on
128	# -stretchtofit
129
130	private variable _click ; # info used for rotate operations
131	private variable _limits ; # Holds overall limits for all dataobjs
132	# using the viewer.
133	private variable _view ; # view params for 3D view
134	private variable _settings
135	private variable _changed
136	private variable _initialStyle ""; # First found style in dataobjects.
137	private variable _reset 1; # Indicates if camera needs to be reset
138	# to starting position.
139	private variable _beforeConnect 1; # Indicates if camera needs to be reset
140	# to starting position.
141
142	private variable _first "" ; # This is the topmost dataset.
143	private variable _start 0
144	private variable _isolines
145	private variable _contourList ""
146
147	common _downloadPopup; # download options from popup
148	private common _hardcopy
149	private variable _width 0
150	private variable _height 0
151	private variable _legendWidth 0
152	private variable _legendHeight 0
153	private variable _resizePending 0
154	private variable _rotatePending 0
155	private variable _legendPending 0
156	private variable _fieldNames {}
157	private variable _fields
158	private variable _curFldName ""
159	private variable _curFldLabel ""
160	private variable _colorMode "scalar";# Mode of colormap (vmag or scalar)
161	}
162
163	itk::usual VtkHeightmapViewer {
164	keep -background -foreground -cursor -font
165	keep -plotbackground -plotforeground -mode
166	}
167
168	# ----------------------------------------------------------------------
169	# CONSTRUCTOR
170	# ----------------------------------------------------------------------
171	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
172	set _serverType "vtkvis"
173
174	EnableWaitDialog 900
175	# Rebuild event
176	$_dispatcher register !rebuild
177	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
178
179	# Resize event
180	$_dispatcher register !resize
181	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
182
183	# Rotate event
184	$_dispatcher register !rotate
185	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
186
187	# Legend event
188	$_dispatcher register !legend
189	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
190
191	#
192	# Populate parser with commands handle incoming requests
193	#
194	$_parser alias image [itcl::code $this ReceiveImage]
195	$_parser alias dataset [itcl::code $this ReceiveDataset]
196	$_parser alias legend [itcl::code $this ReceiveLegend]
197
198	# Create image for legend colorbar.
199	set _image(legend) [image create photo]
200
201	# Initialize the view to some default parameters.
202	array set _view {
203	qw 0.36
204	qx 0.25
205	qy 0.50
206	qz 0.70
207	zoom 1.0
208	xpan 0
209	ypan 0
210	ortho 0
211	}
212	set _arcball [blt::arcball create 100 100]
213	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
214	$_arcball quaternion $q
215
216	array set _settings {
217	-axisflymode "static"
218	-axislabels 1
219	-axisminorticks 1
220	-axisvisible 1
221	-colormap BCGYR
222	-colormapdiscrete 0
223	-colormapvisible 1
224	-edges 0
225	-field "Default"
226	-heightmapscale 50
227	-isheightmap 0
228	-isolinecolor black
229	-isolinesvisible 1
230	-legendvisible 1
231	-lighting 1
232	-numisolines 10
233	-opacity 100
234	-outline 0
235	-savelighting 1
236	-saveopacity 100
237	-saveoutline 0
238	-stretchtofit 0
239	-wireframe 0
240	-xgrid 0
241	-ygrid 0
242	-zgrid 0
243	}
244	array set _changed {
245	-colormap 0
246	-numisolines 0
247	-opacity 0
248	}
249	itk_component add view {
250	canvas $itk_component(plotarea).view \
251	-highlightthickness 0 -borderwidth 0
252	} {
253	usual
254	ignore -highlightthickness -borderwidth -background
255	}
256
257	itk_component add fieldmenu {
258	menu $itk_component(plotarea).menu \
259	-relief flat \
260	-tearoff no
261	} {
262	usual
263	ignore -background -foreground -relief -tearoff
264	}
265	set c $itk_component(view)
266	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
267	bind $c <4> [itcl::code $this Zoom in 0.25]
268	bind $c <5> [itcl::code $this Zoom out 0.25]
269	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
270	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
271	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
272	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
273	bind $c <Enter> "focus %W"
274	bind $c <Control-F1> [itcl::code $this ToggleConsole]
275
276	# Fix the scrollregion in case we go off screen
277	$c configure -scrollregion [$c bbox all]
278
279	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
280	set _map(cwidth) -1
281	set _map(cheight) -1
282	set _map(zoom) 1.0
283	set _map(original) ""
284
285	set f [$itk_component(main) component controls]
286	itk_component add reset {
287	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
288	-highlightthickness 0 \
289	-image [Rappture::icon reset-view] \
290	-command [itcl::code $this CameraReset]
291	} {
292	usual
293	ignore -highlightthickness
294	}
295	pack $itk_component(reset) -side top -padx 2 -pady { 2 0 }
296	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
297
298	itk_component add zoomin {
299	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
300	-highlightthickness 0 \
301	-image [Rappture::icon zoom-in] \
302	-command [itcl::code $this Zoom in]
303	} {
304	usual
305	ignore -highlightthickness
306	}
307	pack $itk_component(zoomin) -side top -padx 2 -pady { 2 0 }
308	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
309
310	itk_component add zoomout {
311	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
312	-highlightthickness 0 \
313	-image [Rappture::icon zoom-out] \
314	-command [itcl::code $this Zoom out]
315	} {
316	usual
317	ignore -highlightthickness
318	}
319	pack $itk_component(zoomout) -side top -padx 2 -pady { 2 0 }
320	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
321
322	itk_component add mode {
323	Rappture::PushButton $f.mode \
324	-onimage [Rappture::icon surface] \
325	-offimage [Rappture::icon surface] \
326	-variable [itcl::scope _settings(-isheightmap)] \
327	-command [itcl::code $this AdjustSetting -isheightmap] \
328	}
329	Rappture::Tooltip::for $itk_component(mode) \
330	"Toggle the surface/contour on/off"
331	pack $itk_component(mode) -padx 2 -pady { 2 0 }
332
333	itk_component add stretchtofit {
334	Rappture::PushButton $f.stretchtofit \
335	-onimage [Rappture::icon stretchtofit] \
336	-offimage [Rappture::icon stretchtofit] \
337	-variable [itcl::scope _settings(-stretchtofit)] \
338	-command [itcl::code $this AdjustSetting -stretchtofit] \
339	}
340	Rappture::Tooltip::for $itk_component(stretchtofit) \
341	"Stretch plot to fit window on/off"
342	pack $itk_component(stretchtofit) -padx 2 -pady 2
343
344	if { [catch {
345	BuildContourTab
346	BuildAxisTab
347	BuildCameraTab
348	} errs] != 0 } {
349	global errorInfo
350	puts stderr "errs=$errs errorInfo=$errorInfo"
351	}
352
353	# Hack around the Tk panewindow. The problem is that the requested
354	# size of the 3d view isn't set until an image is retrieved from
355	# the server. So the panewindow uses the tiny size.
356	set w 10000
357	pack forget $itk_component(view)
358	blt::table $itk_component(plotarea) \
359	0,0 $itk_component(view) -fill both -reqwidth $w
360	blt::table configure $itk_component(plotarea) c1 -resize none
361
362	# Bindings for panning via mouse
363	bind $itk_component(view) <ButtonPress-2> \
364	[itcl::code $this Pan click %x %y]
365	bind $itk_component(view) <B2-Motion> \
366	[itcl::code $this Pan drag %x %y]
367	bind $itk_component(view) <ButtonRelease-2> \
368	[itcl::code $this Pan release %x %y]
369
370	#bind $itk_component(view) <ButtonRelease-3> \
371	# [itcl::code $this Pick %x %y]
372
373	# Bindings for panning via keyboard
374	bind $itk_component(view) <KeyPress-Left> \
375	[itcl::code $this Pan set -10 0]
376	bind $itk_component(view) <KeyPress-Right> \
377	[itcl::code $this Pan set 10 0]
378	bind $itk_component(view) <KeyPress-Up> \
379	[itcl::code $this Pan set 0 -10]
380	bind $itk_component(view) <KeyPress-Down> \
381	[itcl::code $this Pan set 0 10]
382	bind $itk_component(view) <Shift-KeyPress-Left> \
383	[itcl::code $this Pan set -2 0]
384	bind $itk_component(view) <Shift-KeyPress-Right> \
385	[itcl::code $this Pan set 2 0]
386	bind $itk_component(view) <Shift-KeyPress-Up> \
387	[itcl::code $this Pan set 0 -2]
388	bind $itk_component(view) <Shift-KeyPress-Down> \
389	[itcl::code $this Pan set 0 2]
390
391	# Bindings for zoom via keyboard
392	bind $itk_component(view) <KeyPress-Prior> \
393	[itcl::code $this Zoom out]
394	bind $itk_component(view) <KeyPress-Next> \
395	[itcl::code $this Zoom in]
396
397	bind $itk_component(view) <Enter> "focus $itk_component(view)"
398
399	if {[string equal "x11" [tk windowingsystem]]} {
400	# Bindings for zoom via mouse
401	bind $itk_component(view) <4> [itcl::code $this Zoom out]
402	bind $itk_component(view) <5> [itcl::code $this Zoom in]
403	}
404
405	set _image(download) [image create photo]
406	eval itk_initialize $args
407	Connect
408	set _beforeConnect 0
409	}
410
411	# ----------------------------------------------------------------------
412	# DESTRUCTOR
413	# ----------------------------------------------------------------------
414	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
415	Disconnect
416	image delete $_image(plot)
417	image delete $_image(download)
418	catch { blt::arcball destroy $_arcball }
419	}
420
421	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
422	if { $_width < 2 } {
423	set _width 500
424	}
425	if { $_height < 2 } {
426	set _height 500
427	}
428	set _start [clock clicks -milliseconds]
429	SendCmd "screen size [expr $_width - 20] $_height"
430
431	set font "Arial 8"
432	set lh [font metrics $font -linespace]
433	set h [expr {$_height - 2 * ($lh + 2)}]
434	if { $h != $_legendHeight } {
435	EventuallyRequestLegend
436	} else {
437	DrawLegend
438	}
439	set _resizePending 0
440	}
441
442	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
443	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
444	SendCmd "camera orient $q"
445	set _rotatePending 0
446	}
447
448	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
449	if { !$_legendPending } {
450	set _legendPending 1
451	$_dispatcher event -idle !legend
452	}
453	}
454
455	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
456	set _width $w
457	set _height $h
458	$_arcball resize $w $h
459	if { !$_resizePending } {
460	set _resizePending 1
461	$_dispatcher event -after 250 !resize
462	}
463	}
464
465	set rotate_delay 100
466
467	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
468	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
469	if { !$_rotatePending } {
470	set _rotatePending 1
471	global rotate_delay
472	$_dispatcher event -after $rotate_delay !rotate
473	}
474	}
475
476	# ----------------------------------------------------------------------
477	# USAGE: add <dataobj> ?<settings>?
478	#
479	# Clients use this to add a data object to the plot. The optional
480	# <settings> are used to configure the plot. Allowed settings are
481	# -color, -brightness, -width, -linestyle, and -raise.
482	# ----------------------------------------------------------------------
483	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
484	if { ![$dataobj isvalid] } {
485	return; # Object doesn't contain valid data.
486	}
487	array set params {
488	-color auto
489	-width 1
490	-linestyle solid
491	-brightness 0
492	-raise 0
493	-description ""
494	-param ""
495	-type ""
496	}
497	array set params $settings
498	set params(-description) ""
499	set params(-param) ""
500	array set params $settings
501
502	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
503	# can't handle -autocolors yet
504	set params(-color) white
505	}
506	set pos [lsearch -exact $_dlist $dataobj]
507	if {$pos < 0} {
508	lappend _dlist $dataobj
509	}
510	set _obj2ovride($dataobj-color) $params(-color)
511	set _obj2ovride($dataobj-width) $params(-width)
512	set _obj2ovride($dataobj-raise) $params(-raise)
513	$_dispatcher event -idle !rebuild
514	}
515
516
517	# ----------------------------------------------------------------------
518	# USAGE: delete ?<dataobj1> <dataobj2> ...?
519	#
520	# Clients use this to delete a dataobj from the plot. If no dataobjs
521	# are specified, then all dataobjs are deleted. No data objects are
522	# deleted. They are only removed from the display list.
523	#
524	# ----------------------------------------------------------------------
525	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
526	if { [llength $args] == 0} {
527	set args $_dlist
528	}
529	# Delete all specified dataobjs
530	set changed 0
531	foreach dataobj $args {
532	set pos [lsearch -exact $_dlist $dataobj]
533	if { $pos < 0 } {
534	continue; # Don't know anything about it.
535	}
536	# Remove it from the dataobj list.
537	set _dlist [lreplace $_dlist $pos $pos]
538	array unset _obj2ovride $dataobj-*
539	array unset _settings $dataobj-*
540	set changed 1
541	}
542	# If anything changed, then rebuild the plot
543	if { $changed } {
544	$_dispatcher event -idle !rebuild
545	}
546	}
547
548	# ----------------------------------------------------------------------
549	# USAGE: get ?-objects?
550	# USAGE: get ?-visible?
551	# USAGE: get ?-image view?
552	#
553	# Clients use this to query the list of objects being plotted, in
554	# order from bottom to top of this result. The optional "-image"
555	# flag can also request the internal images being shown.
556	# ----------------------------------------------------------------------
557	itcl::body Rappture::VtkHeightmapViewer::get {args} {
558	if {[llength $args] == 0} {
559	set args "-objects"
560	}
561	set op [lindex $args 0]
562	switch -- $op {
563	"-objects" {
564	# put the dataobj list in order according to -raise options
565	set dlist {}
566	foreach dataobj $_dlist {
567	if { ![IsValidObject $dataobj] } {
568	continue
569	}
570	if {[info exists _obj2ovride($dataobj-raise)] &&
571	$_obj2ovride($dataobj-raise)} {
572	set dlist [linsert $dlist 0 $dataobj]
573	} else {
574	lappend dlist $dataobj
575	}
576	}
577	return $dlist
578	}
579	"-visible" {
580	set dlist {}
581	foreach dataobj $_dlist {
582	if { ![IsValidObject $dataobj] } {
583	continue
584	}
585	if { ![info exists _obj2ovride($dataobj-raise)] } {
586	# No setting indicates that the object isn't visible.
587	continue
588	}
589	# Otherwise use the -raise parameter to put the object to
590	# the front of the list.
591	if { $_obj2ovride($dataobj-raise) } {
592	set dlist [linsert $dlist 0 $dataobj]
593	} else {
594	lappend dlist $dataobj
595	}
596	}
597	return $dlist
598	}
599	-image {
600	if {[llength $args] != 2} {
601	error "wrong # args: should be \"get -image view\""
602	}
603	switch -- [lindex $args end] {
604	view {
605	return $_image(plot)
606	}
607	default {
608	error "bad image name \"[lindex $args end]\": should be view"
609	}
610	}
611	}
612	default {
613	error "bad option \"$op\": should be -objects or -image"
614	}
615	}
616	}
617
618	#
619	# scale --
620	#
621	# This gets called either incrementally as new simulations are
622	# added or all at once as a sequence of heightmaps.
623	# This accounts for all objects--even those not showing on the
624	# screen. Because of this, the limits are appropriate for all
625	# objects as the user scans through data in the ResultSet viewer.
626	#
627	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
628	foreach dataobj $args {
629	if { ![$dataobj isvalid] } {
630	continue; # Object doesn't contain valid data.
631	}
632	foreach axis { x y } {
633	set lim [$dataobj limits $axis]
634	if { ![info exists _limits($axis)] } {
635	set _limits($axis) $lim
636	continue
637	}
638	foreach {min max} $lim break
639	foreach {amin amax} $_limits($axis) break
640	if { $amin > $min } {
641	set amin $min
642	}
643	if { $amax < $max } {
644	set amax $max
645	}
646	set _limits($axis) [list $amin $amax]
647	set units [$dataobj hints ${axis}units]
648	set found($units) 1
649	}
650	foreach { fname lim } [$dataobj fieldlimits] {
651	if { ![info exists _limits($fname)] } {
652	set _limits($fname) $lim
653	continue
654	}
655	foreach {min max} $lim break
656	foreach {fmin fmax} $_limits($fname) break
657	if { $fmin > $min } {
658	set fmin $min
659	}
660	if { $fmax < $max } {
661	set fmax $max
662	}
663	set _limits($fname) [list $fmin $fmax]
664	}
665	}
666	if { [array size found] > 1 } {
667	set _settings(-stretchtofit) 1
668	} else {
669	# Check if the range of the x and y axes requires that we stretch
670	# the contour to fit the plotting area. This can happen when the
671	# x and y scales differ greatly (> 100x)
672	foreach {xmin xmax} $_limits(x) break
673	foreach {ymin ymax} $_limits(y) break
674	if { (($xmax - $xmin) > (($ymax -$ymin) * $_maxScale)) \|\|
675	((($xmax - $xmin) * $_maxScale) < ($ymax -$ymin)) } {
676	set _settings(-stretchtofit) 1
677	}
678	}
679	}
680
681	# ----------------------------------------------------------------------
682	# USAGE: download coming
683	# USAGE: download controls <downloadCommand>
684	# USAGE: download now
685	#
686	# Clients use this method to create a downloadable representation
687	# of the plot. Returns a list of the form {ext string}, where
688	# "ext" is the file extension (indicating the type of data) and
689	# "string" is the data itself.
690	# ----------------------------------------------------------------------
691	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
692	switch $option {
693	coming {
694	if {[catch {
695	blt::winop snap $itk_component(plotarea) $_image(download)
696	}]} {
697	$_image(download) configure -width 1 -height 1
698	$_image(download) put #000000
699	}
700	}
701	controls {
702	set popup .vtkviewerdownload
703	if { ![winfo exists .vtkviewerdownload] } {
704	set inner [BuildDownloadPopup $popup [lindex $args 0]]
705	} else {
706	set inner [$popup component inner]
707	}
708	set _downloadPopup(image_controls) $inner.image_frame
709	set num [llength [get]]
710	set num [expr {($num == 1) ? "1 result" : "$num results"}]
711	set word [Rappture::filexfer::label downloadWord]
712	$inner.summary configure -text "$word $num in the following format:"
713	update idletasks ;# Fix initial sizes
714	return $popup
715	}
716	now {
717	set popup .vtkviewerdownload
718	if {[winfo exists .vtkviewerdownload]} {
719	$popup deactivate
720	}
721	switch -- $_downloadPopup(format) {
722	"image" {
723	return [$this GetImage [lindex $args 0]]
724	}
725	"vtk" {
726	return [$this GetVtkData [lindex $args 0]]
727	}
728	}
729	return ""
730	}
731	default {
732	error "bad option \"$option\": should be coming, controls, now"
733	}
734	}
735	}
736
737	# ----------------------------------------------------------------------
738	# USAGE: Connect ?<host:port>,<host:port>...?
739	#
740	# Clients use this method to establish a connection to a new
741	# server, or to reestablish a connection to the previous server.
742	# Any existing connection is automatically closed.
743	# ----------------------------------------------------------------------
744	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
745	global readyForNextFrame
746	set readyForNextFrame 1
747	set _reset 1
748	set _hosts [GetServerList "vtkvis"]
749	if { "" == $_hosts } {
750	return 0
751	}
752	set result [VisViewer::Connect $_hosts]
753	if { $result } {
754	if { $_reportClientInfo } {
755	# Tell the server the viewer, hub, user and session.
756	# Do this immediately on connect before buffering any commands
757	global env
758
759	set info {}
760	set user "???"
761	if { [info exists env(USER)] } {
762	set user $env(USER)
763	}
764	set session "???"
765	if { [info exists env(SESSION)] } {
766	set session $env(SESSION)
767	}
768	lappend info "version" "$Rappture::version"
769	lappend info "build" "$Rappture::build"
770	lappend info "svnurl" "$Rappture::svnurl"
771	lappend info "installdir" "$Rappture::installdir"
772	lappend info "hub" [exec hostname]
773	lappend info "client" "vtkheightmapviewer"
774	lappend info "user" $user
775	lappend info "session" $session
776	SendCmd "clientinfo [list $info]"
777	}
778	set w [winfo width $itk_component(view)]
779	set h [winfo height $itk_component(view)]
780	EventuallyResize $w $h
781	}
782	return $result
783	}
784
785	#
786	# isconnected --
787	#
788	# Indicates if we are currently connected to the visualization server.
789	#
790	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
791	return [VisViewer::IsConnected]
792	}
793
794	#
795	# disconnect --
796	#
797	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
798	Disconnect
799	set _reset 1
800	}
801
802	#
803	# Disconnect --
804	#
805	# Clients use this method to disconnect from the current rendering
806	# server.
807	#
808	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
809	VisViewer::Disconnect
810
811	$_dispatcher cancel !rebuild
812	$_dispatcher cancel !resize
813	$_dispatcher cancel !rotate
814	$_dispatcher cancel !legend
815	# disconnected -- no more data sitting on server
816	array unset _datasets
817	array unset _data
818	array unset _colormaps
819	array unset _obj2datasets
820	global readyForNextFrame
821	set readyForNextFrame 1
822	}
823
824	# ----------------------------------------------------------------------
825	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
826	#
827	# Invoked automatically whenever the "image" command comes in from
828	# the rendering server. Indicates that binary image data with the
829	# specified <size> will follow.
830	# ----------------------------------------------------------------------
831	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
832	global readyForNextFrame
833	set readyForNextFrame 1
834	array set info {
835	-token "???"
836	-bytes 0
837	-type image
838	}
839	array set info $args
840	set bytes [ReceiveBytes $info(-bytes)]
841	if { $info(-type) == "image" } {
842	if 0 {
843	set f [open "last.ppm" "w"]
844	puts $f $bytes
845	close $f
846	}
847	$_image(plot) configure -data $bytes
848	set time [clock seconds]
849	set date [clock format $time]
850	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
851	if { $_start > 0 } {
852	set finish [clock clicks -milliseconds]
853	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
854	set _start 0
855	}
856	} elseif { $info(type) == "print" } {
857	set tag $this-print-$info(-token)
858	set _hardcopy($tag) $bytes
859	}
860	}
861
862	#
863	# ReceiveDataset --
864	#
865	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
866	if { ![isconnected] } {
867	return
868	}
869	set option [lindex $args 0]
870	switch -- $option {
871	"scalar" {
872	set option [lindex $args 1]
873	switch -- $option {
874	"world" {
875	foreach { x y z value tag } [lrange $args 2 end] break
876	}
877	"pixel" {
878	foreach { x y value tag } [lrange $args 2 end] break
879	}
880	}
881	}
882	"vector" {
883	set option [lindex $args 1]
884	switch -- $option {
885	"world" {
886	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
887	}
888	"pixel" {
889	foreach { x y vx vy vz tag } [lrange $args 2 end] break
890	}
891	}
892	}
893	"names" {
894	foreach { name } [lindex $args 1] {
895	#puts stderr "Dataset: $name"
896	}
897	}
898	default {
899	error "unknown dataset option \"$option\" from server"
900	}
901	}
902	}
903
904	# ----------------------------------------------------------------------
905	# USAGE: Rebuild
906	#
907	# Called automatically whenever something changes that affects the
908	# data in the widget. Clears any existing data and rebuilds the
909	# widget to display new data.
910	# ----------------------------------------------------------------------
911	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
912	set w [winfo width $itk_component(view)]
913	set h [winfo height $itk_component(view)]
914	if { $w < 2 \|\| $h < 2 } {
915	$_dispatcher event -idle !rebuild
916	return
917	}
918
919	# Turn on buffering of commands to the server. We don't want to
920	# be preempted by a server disconnect/reconnect (which automatically
921	# generates a new call to Rebuild).
922	StartBufferingCommands
923
924	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
925	set _width $w
926	set _height $h
927	$_arcball resize $w $h
928	DoResize
929	if { $_settings(-stretchtofit) } {
930	AdjustSetting -stretchtofit
931	}
932	}
933	if { $_reset } {
934	#
935	# Reset the camera and other view parameters
936	#
937	InitSettings -isheightmap -background
938
939	# Setting a custom exponent and label format for axes is causing
940	# a problem with rounding. Near zero ticks aren't rounded by
941	# the %g format. The VTK CubeAxes seem to currently work best
942	# when allowed to automatically set the exponent and precision
943	# based on the axis ranges. This does tend to result in less
944	# visual clutter, so I think it is best to use the automatic
945	# settings by default. We can test more fine-grained
946	# controls on the axis settings tab if necessary.
947	# -Leif
948	#SendCmd "axis exp 0 0 0 1"
949
950	SendCmd "axis lrot z 90"
951	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
952	$_arcball quaternion $q
953	if {$_settings(-isheightmap) } {
954	if { $_view(ortho)} {
955	SendCmd "camera mode ortho"
956	} else {
957	SendCmd "camera mode persp"
958	}
959	DoRotate
960	SendCmd "camera reset"
961	}
962	PanCamera
963	StopBufferingCommands
964	SendCmd "imgflush"
965	StartBufferingCommands
966	}
967
968	set _first ""
969	# Start off with no datasets are visible.
970	SendCmd "dataset visible 0"
971	set scale [GetHeightmapScale]
972	foreach dataobj [get -objects] {
973	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
974	set _first $dataobj
975	}
976	set _obj2datasets($dataobj) ""
977	foreach comp [$dataobj components] {
978	set tag $dataobj-$comp
979	if { ![info exists _datasets($tag)] } {
980	set bytes [$dataobj vtkdata $comp]
981	if 0 {
982	set f [open /tmp/vtkheightmap.vtk "w"]
983	puts $f $bytes
984	close $f
985	}
986	set length [string length $bytes]
987	if { $_reportClientInfo } {
988	set info {}
989	lappend info "tool_id" [$dataobj hints toolId]
990	lappend info "tool_name" [$dataobj hints toolName]
991	lappend info "tool_version" [$dataobj hints toolRevision]
992	lappend info "tool_title" [$dataobj hints toolTitle]
993	lappend info "dataset_label" [$dataobj hints label]
994	lappend info "dataset_size" $length
995	lappend info "dataset_tag" $tag
996	SendCmd [list "clientinfo" $info]
997	}
998	SendCmd "dataset add $tag data follows $length"
999	append _outbuf $bytes
1000	set _datasets($tag) 1
1001	SetObjectStyle $dataobj $comp
1002	}
1003	lappend _obj2datasets($dataobj) $tag
1004	if { [info exists _obj2ovride($dataobj-raise)] } {
1005	# Setting dataset visible enables outline
1006	# and heightmap
1007	SendCmd "dataset visible 1 $tag"
1008	}
1009	if { ![info exists _comp2scale($tag)] \|\|
1010	$_comp2scale($tag) != $scale } {
1011	SendCmd "heightmap heightscale $scale $tag"
1012	set _comp2scale($tag) $scale
1013	}
1014	}
1015	}
1016	if { $_first != "" } {
1017	$itk_component(field) choices delete 0 end
1018	$itk_component(fieldmenu) delete 0 end
1019	array unset _fields
1020	set _curFldName ""
1021	foreach cname [$_first components] {
1022	foreach fname [$_first fieldnames $cname] {
1023	if { [info exists _fields($fname)] } {
1024	continue
1025	}
1026	foreach { label units components } \
1027	[$_first fieldinfo $fname] break
1028	$itk_component(field) choices insert end "$fname" "$label"
1029	$itk_component(fieldmenu) add radiobutton -label "$label" \
1030	-value $label -variable [itcl::scope _curFldLabel] \
1031	-selectcolor red \
1032	-activebackground $itk_option(-plotbackground) \
1033	-activeforeground $itk_option(-plotforeground) \
1034	-font "Arial 8" \
1035	-command [itcl::code $this Combo invoke]
1036	set _fields($fname) [list $label $units $components]
1037	if { $_curFldName == "" } {
1038	set _curFldName $fname
1039	set _curFldLabel $label
1040	}
1041	}
1042	}
1043	$itk_component(field) value $_curFldLabel
1044	}
1045	InitSettings -stretchtofit -outline
1046
1047	if { $_reset } {
1048	SendCmd "axis tickpos outside"
1049	#SendCmd "axis lformat all %g"
1050
1051	foreach axis { x y z } {
1052	if { $axis == "z" } {
1053	set label [$_first hints label]
1054	} else {
1055	set label [$_first hints ${axis}label]
1056	}
1057	if { $label == "" } {
1058	if {$axis == "z"} {
1059	if { [string match "component*" $_curFldName] } {
1060	set label [string toupper $axis]
1061	} else {
1062	set label $_curFldLabel
1063	}
1064	} else {
1065	set label [string toupper $axis]
1066	}
1067	}
1068	# May be a space in the axis label.
1069	SendCmd [list axis name $axis $label]
1070
1071	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1072	set units [lindex $_fields($_curFldName) 1]
1073	} else {
1074	set units [$_first hints ${axis}units]
1075	}
1076	if { $units != "" } {
1077	# May be a space in the axis units.
1078	SendCmd [list axis units $axis $units]
1079	}
1080	}
1081	#
1082	# Reset the camera and other view parameters
1083	#
1084	ResetAxes
1085	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1086	$_arcball quaternion $q
1087	if {$_settings(-isheightmap) } {
1088	if { $_view(ortho)} {
1089	SendCmd "camera mode ortho"
1090	} else {
1091	SendCmd "camera mode persp"
1092	}
1093	DoRotate
1094	SendCmd "camera reset"
1095	}
1096	PanCamera
1097	InitSettings -xgrid -ygrid -zgrid \
1098	-axisvisible -axislabels -heightmapscale -field -isheightmap \
1099	-numisolines
1100	if { [array size _fields] < 2 } {
1101	catch {blt::table forget $itk_component(field) $itk_component(field_l)}
1102	}
1103	RequestLegend
1104	set _reset 0
1105	}
1106	global readyForNextFrame
1107	set readyForNextFrame 0; # Don't advance to the next frame
1108
1109	# Actually write the commands to the server socket. If it fails, we don't
1110	# care. We're finished here.
1111	blt::busy hold $itk_component(hull)
1112	StopBufferingCommands
1113	blt::busy release $itk_component(hull)
1114	}
1115
1116	# ----------------------------------------------------------------------
1117	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1118	#
1119	# Returns a list of server IDs for the current datasets being displayed. This
1120	# is normally a single ID, but it might be a list of IDs if the current data
1121	# object has multiple components.
1122	# ----------------------------------------------------------------------
1123	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1124	set flag [lindex $args 0]
1125	switch -- $flag {
1126	"-all" {
1127	if { [llength $args] > 1 } {
1128	error "CurrentDatasets: can't specify dataobj after \"-all\""
1129	}
1130	set dlist [get -objects]
1131	}
1132	"-visible" {
1133	if { [llength $args] > 1 } {
1134	set dlist {}
1135	set args [lrange $args 1 end]
1136	foreach dataobj $args {
1137	if { [info exists _obj2ovride($dataobj-raise)] } {
1138	lappend dlist $dataobj
1139	}
1140	}
1141	} else {
1142	set dlist [get -visible]
1143	}
1144	}
1145	default {
1146	set dlist $args
1147	}
1148	}
1149	set rlist ""
1150	foreach dataobj $dlist {
1151	foreach comp [$dataobj components] {
1152	set tag $dataobj-$comp
1153	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1154	lappend rlist $tag
1155	}
1156	}
1157	}
1158	return $rlist
1159	}
1160
1161	itcl::body Rappture::VtkHeightmapViewer::CameraReset {} {
1162	array set _view {
1163	qw 0.36
1164	qx 0.25
1165	qy 0.50
1166	qz 0.70
1167	zoom 1.0
1168	xpan 0
1169	ypan 0
1170	}
1171	if { $_first != "" } {
1172	set location [$_first hints camera]
1173	if { $location != "" } {
1174	array set _view $location
1175	}
1176	}
1177	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1178	$_arcball quaternion $q
1179	if {$_settings(-isheightmap) } {
1180	DoRotate
1181	}
1182	SendCmd "camera reset"
1183	}
1184
1185	# ----------------------------------------------------------------------
1186	# USAGE: Zoom in
1187	# USAGE: Zoom out
1188	# USAGE: Zoom reset
1189	#
1190	# Called automatically when the user clicks on one of the zoom
1191	# controls for this widget. Changes the zoom for the current view.
1192	# ----------------------------------------------------------------------
1193	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1194	switch -- $option {
1195	"in" {
1196	set _view(zoom) [expr {$_view(zoom)*1.25}]
1197	SendCmd "camera zoom $_view(zoom)"
1198	}
1199	"out" {
1200	set _view(zoom) [expr {$_view(zoom)*0.8}]
1201	SendCmd "camera zoom $_view(zoom)"
1202	}
1203	"reset" {
1204	array set _view {
1205	zoom 1.0
1206	xpan 0
1207	ypan 0
1208	}
1209	SendCmd "camera reset"
1210	}
1211	}
1212	}
1213
1214	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1215	set x $_view(xpan)
1216	set y $_view(ypan)
1217	SendCmd "camera pan $x $y"
1218	}
1219
1220
1221	# ----------------------------------------------------------------------
1222	# USAGE: Rotate click <x> <y>
1223	# USAGE: Rotate drag <x> <y>
1224	# USAGE: Rotate release <x> <y>
1225	#
1226	# Called automatically when the user clicks/drags/releases in the
1227	# plot area. Moves the plot according to the user's actions.
1228	# ----------------------------------------------------------------------
1229	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1230	switch -- $option {
1231	"click" {
1232	$itk_component(view) configure -cursor fleur
1233	set _click(x) $x
1234	set _click(y) $y
1235	}
1236	"drag" {
1237	if {[array size _click] == 0} {
1238	Rotate click $x $y
1239	} else {
1240	set w [winfo width $itk_component(view)]
1241	set h [winfo height $itk_component(view)]
1242	if {$w <= 0 \|\| $h <= 0} {
1243	return
1244	}
1245
1246	if {[catch {
1247	# this fails sometimes for no apparent reason
1248	set dx [expr {double($x-$_click(x))/$w}]
1249	set dy [expr {double($y-$_click(y))/$h}]
1250	}]} {
1251	return
1252	}
1253	if { $dx == 0 && $dy == 0 } {
1254	return
1255	}
1256	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1257	EventuallyRotate $q
1258	set _click(x) $x
1259	set _click(y) $y
1260	}
1261	}
1262	"release" {
1263	Rotate drag $x $y
1264	$itk_component(view) configure -cursor ""
1265	catch {unset _click}
1266	}
1267	default {
1268	error "bad option \"$option\": should be click, drag, release"
1269	}
1270	}
1271	}
1272
1273	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1274	foreach tag [CurrentDatasets -visible] {
1275	SendCmd "dataset getscalar pixel $x $y $tag"
1276	}
1277	}
1278
1279	# ----------------------------------------------------------------------
1280	# USAGE: $this Pan click x y
1281	# $this Pan drag x y
1282	# $this Pan release x y
1283	#
1284	# Called automatically when the user clicks on one of the zoom
1285	# controls for this widget. Changes the zoom for the current view.
1286	# ----------------------------------------------------------------------
1287	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1288	switch -- $option {
1289	"set" {
1290	set w [winfo width $itk_component(view)]
1291	set h [winfo height $itk_component(view)]
1292	set x [expr $x / double($w)]
1293	set y [expr $y / double($h)]
1294	set _view(xpan) [expr $_view(xpan) + $x]
1295	set _view(ypan) [expr $_view(ypan) + $y]
1296	PanCamera
1297	return
1298	}
1299	"click" {
1300	set _click(x) $x
1301	set _click(y) $y
1302	$itk_component(view) configure -cursor hand1
1303	}
1304	"drag" {
1305	if { ![info exists _click(x)] } {
1306	set _click(x) $x
1307	}
1308	if { ![info exists _click(y)] } {
1309	set _click(y) $y
1310	}
1311	set w [winfo width $itk_component(view)]
1312	set h [winfo height $itk_component(view)]
1313	set dx [expr ($_click(x) - $x)/double($w)]
1314	set dy [expr ($_click(y) - $y)/double($h)]
1315	set _click(x) $x
1316	set _click(y) $y
1317	set _view(xpan) [expr $_view(xpan) - $dx]
1318	set _view(ypan) [expr $_view(ypan) - $dy]
1319	PanCamera
1320	}
1321	"release" {
1322	Pan drag $x $y
1323	$itk_component(view) configure -cursor ""
1324	}
1325	default {
1326	error "unknown option \"$option\": should set, click, drag, or release"
1327	}
1328	}
1329	}
1330
1331	# ----------------------------------------------------------------------
1332	# USAGE: InitSettings <what> ?<value>?
1333	#
1334	# Used internally to update rendering settings whenever parameters
1335	# change in the popup settings panel. Sends the new settings off
1336	# to the back end.
1337	# ----------------------------------------------------------------------
1338	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1339	foreach spec $args {
1340	if { [info exists _settings($_first${spec})] } {
1341	# Reset global setting with dataobj specific setting
1342	set _settings($spec) $_settings($_first${spec})
1343	}
1344	AdjustSetting $spec
1345	}
1346	}
1347
1348	#
1349	# AdjustSetting --
1350	#
1351	# Changes/updates a specific setting in the widget. There are
1352	# usually user-setable option. Commands are sent to the render
1353	# server.
1354	#
1355	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1356	if { $_beforeConnect } {
1357	return
1358	}
1359	switch -- $what {
1360	"-axisflymode" {
1361	set mode [$itk_component(axisflymode) value]
1362	set mode [$itk_component(axisflymode) translate $mode]
1363	set _settings($what) $mode
1364	SendCmd "axis flymode $mode"
1365	}
1366	"-axislabels" {
1367	set bool $_settings($what)
1368	SendCmd "axis labels all $bool"
1369	}
1370	"-axisminorticks" {
1371	set bool $_settings($what)
1372	SendCmd "axis minticks all $bool"
1373	}
1374	"-axisvisible" {
1375	set bool $_settings($what)
1376	SendCmd "axis visible all $bool"
1377	}
1378	"-xgrid" - "-ygrid" - "-zgrid" {
1379	set axis [string tolower [string range $what 1 1]]
1380	set bool $_settings($what)
1381	SendCmd "axis grid $axis $bool"
1382	}
1383	"-background" {
1384	set bg [$itk_component(background) value]
1385	array set fgcolors {
1386	"black" "white"
1387	"white" "black"
1388	"grey" "black"
1389	}
1390	set fg $fgcolors($bg)
1391	configure -plotbackground $bg -plotforeground $fg
1392	$itk_component(view) delete "legend"
1393	SendCmd "screen bgcolor [Color2RGB $bg]"
1394	SendCmd "outline color [Color2RGB $fg]"
1395	SendCmd "axis color all [Color2RGB $fg]"
1396	DrawLegend
1397	}
1398	"-colormap" {
1399	set _changed($what) 1
1400	StartBufferingCommands
1401	set color [$itk_component(colormap) value]
1402	set _settings($what) $color
1403	if { $color == "none" } {
1404	if { $_settings(-colormapvisible) } {
1405	SendCmd "heightmap surface 0"
1406	set _settings(-colormapvisible) 0
1407	}
1408	} else {
1409	if { !$_settings(-colormapvisible) } {
1410	SendCmd "heightmap surface 1"
1411	set _settings(-colormapvisible) 1
1412	}
1413	SetCurrentColormap $color
1414	if {$_settings(-colormapdiscrete)} {
1415	set numColors [expr $_settings(-numisolines) + 1]
1416	SendCmd "colormap res $numColors $color"
1417	}
1418	}
1419	StopBufferingCommands
1420	EventuallyRequestLegend
1421	}
1422	"-colormapvisible" {
1423	set bool $_settings($what)
1424	SendCmd "heightmap surface $bool"
1425	}
1426	"-colormapdiscrete" {
1427	set bool $_settings($what)
1428	set numColors [expr $_settings(-numisolines) + 1]
1429	StartBufferingCommands
1430	if {$bool} {
1431	SendCmd "colormap res $numColors"
1432	# Discrete colormap requires preinterp on
1433	SendCmd "heightmap preinterp on"
1434	} else {
1435	SendCmd "colormap res default"
1436	# FIXME: add setting for preinterp (default on)
1437	SendCmd "heightmap preinterp on"
1438	}
1439	StopBufferingCommands
1440	EventuallyRequestLegend
1441	}
1442	"-edges" {
1443	set bool $_settings($what)
1444	SendCmd "heightmap edges $bool"
1445	}
1446	"-field" {
1447	set label [$itk_component(field) value]
1448	set fname [$itk_component(field) translate $label]
1449	set _settings($what) $fname
1450	if { [info exists _fields($fname)] } {
1451	foreach { label units components } $_fields($fname) break
1452	if { $components > 1 } {
1453	set _colorMode vmag
1454	} else {
1455	set _colorMode scalar
1456	}
1457	set _curFldName $fname
1458	set _curFldLabel $label
1459	} else {
1460	puts stderr "unknown field \"$fname\""
1461	return
1462	}
1463	set label [$_first hints label]
1464	if { $label == "" } {
1465	if { [string match "component*" $_curFldName] } {
1466	set label Z
1467	} else {
1468	set label $_curFldLabel
1469	}
1470	}
1471	# May be a space in the axis label.
1472	SendCmd [list axis name z $label]
1473
1474	if { [$_first hints zunits] == "" } {
1475	set units [lindex $_fields($_curFldName) 1]
1476	} else {
1477	set units [$_first hints zunits]
1478	}
1479	if { $units != "" } {
1480	# May be a space in the axis units.
1481	SendCmd [list axis units z $units]
1482	}
1483	# Get the new limits because the field changed.
1484	ResetAxes
1485	SendCmd "dataset scalar $_curFldName"
1486	SendCmd "heightmap colormode scalar $_curFldName"
1487	Zoom reset
1488	UpdateContourList
1489	DrawLegend
1490	}
1491	"-heightmapscale" {
1492	if { $_settings(-isheightmap) } {
1493	set scale [GetHeightmapScale]
1494	# Have to set the datasets individually because we are
1495	# tracking them in _comp2scale.
1496	foreach dataset [CurrentDatasets -all] {
1497	SendCmd "heightmap heightscale $scale $dataset"
1498	set _comp2scale($dataset) $scale
1499	}
1500	ResetAxes
1501	}
1502	}
1503	"-isheightmap" {
1504	set bool $_settings($what)
1505	set c $itk_component(view)
1506	StartBufferingCommands
1507	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1508	if { $bool } {
1509	set _settings(-heightmapscale) 50
1510	set _settings(-opacity) $_settings(-saveopacity)
1511	set _settings(-lighting) $_settings(-savelighting)
1512	set _settings(-outline) 0
1513	} else {
1514	set _settings(-heightmapscale) 0
1515	set _settings(-lighting) 0
1516	set _settings(-opacity) 100
1517	set _settings(-outline) $_settings(-saveoutline)
1518	}
1519	InitSettings -lighting -opacity -outline
1520	set scale [GetHeightmapScale]
1521	# Have to set the datasets individually because we are
1522	# tracking them in _comp2scale.
1523	foreach dataset [CurrentDatasets -all] {
1524	SendCmd "heightmap heightscale $scale $dataset"
1525	set _comp2scale($dataset) $scale
1526	}
1527	if { $bool } {
1528	$itk_component(lighting) configure -state normal
1529	$itk_component(opacity) configure -state normal
1530	$itk_component(scale) configure -state normal
1531	$itk_component(opacity_l) configure -state normal
1532	$itk_component(scale_l) configure -state normal
1533	$itk_component(outline) configure -state disabled
1534	if {$_view(ortho)} {
1535	SendCmd "camera mode ortho"
1536	} else {
1537	SendCmd "camera mode persp"
1538	}
1539	} else {
1540	$itk_component(lighting) configure -state disabled
1541	$itk_component(opacity) configure -state disabled
1542	$itk_component(scale) configure -state disabled
1543	$itk_component(opacity_l) configure -state disabled
1544	$itk_component(scale_l) configure -state disabled
1545	$itk_component(outline) configure -state normal
1546	SendCmd "camera mode image"
1547	}
1548	if {$_settings(-stretchtofit)} {
1549	if {$scale == 0} {
1550	SendCmd "camera aspect window"
1551	} else {
1552	SendCmd "camera aspect square"
1553	}
1554	}
1555	ResetAxes
1556	if { $bool } {
1557	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1558	$_arcball quaternion $q
1559	SendCmd "camera orient $q"
1560	} else {
1561	bind $c <ButtonPress-1> {}
1562	bind $c <B1-Motion> {}
1563	bind $c <ButtonRelease-1> {}
1564	}
1565	Zoom reset
1566	# Fix the mouse bindings for rotation/panning and the
1567	# camera mode. Ideally we'd create a bindtag for these.
1568	if { $bool } {
1569	# Bindings for rotation via mouse
1570	bind $c <ButtonPress-1> \
1571	[itcl::code $this Rotate click %x %y]
1572	bind $c <B1-Motion> \
1573	[itcl::code $this Rotate drag %x %y]
1574	bind $c <ButtonRelease-1> \
1575	[itcl::code $this Rotate release %x %y]
1576	}
1577	StopBufferingCommands
1578	}
1579	"-isolinecolor" {
1580	set color [$itk_component(isolinecolor) value]
1581	if { $color == "none" } {
1582	if { $_settings(-isolinesvisible) } {
1583	SendCmd "heightmap isolines 0"
1584	set _settings(-isolinesvisible) 0
1585	}
1586	} else {
1587	if { !$_settings(-isolinesvisible) } {
1588	SendCmd "heightmap isolines 1"
1589	set _settings(-isolinesvisible) 1
1590	}
1591	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1592	}
1593	DrawLegend
1594	}
1595	"-isolinesvisible" {
1596	set bool $_settings($what)
1597	SendCmd "heightmap isolines $bool"
1598	DrawLegend
1599	}
1600	"-legendvisible" {
1601	if { !$_settings($what) } {
1602	$itk_component(view) delete legend
1603	}
1604	DrawLegend
1605	}
1606	"-lighting" {
1607	if { $_settings(-isheightmap) } {
1608	set _settings(-savelighting) $_settings($what)
1609	set bool $_settings($what)
1610	SendCmd "heightmap lighting $bool"
1611	} else {
1612	SendCmd "heightmap lighting 0"
1613	}
1614	}
1615	"-numisolines" {
1616	set _settings($what) [$itk_component(numisolines) value]
1617	set _currentNumIsolines $_settings($what)
1618	UpdateContourList
1619	set _changed($what) 1
1620	SendCmd "heightmap contourlist [list $_contourList]"
1621	if {$_settings(-colormapdiscrete)} {
1622	set numColors [expr $_settings($what) + 1]
1623	SendCmd "colormap res $numColors"
1624	EventuallyRequestLegend
1625	} else {
1626	DrawLegend
1627	}
1628	}
1629	"-opacity" {
1630	set _changed($what) 1
1631	set val [expr $_settings($what) * 0.01]
1632	if { $_settings(-isheightmap) } {
1633	set _settings(-saveopacity) $_settings($what)
1634	SendCmd "heightmap opacity $val"
1635	} else {
1636	SendCmd "heightmap opacity 1.0"
1637	}
1638	}
1639	"-outline" {
1640	if { $_settings(-isheightmap) } {
1641	SendCmd "outline visible 0"
1642	} else {
1643	set _settings(-saveoutline) $_settings($what)
1644	set bool $_settings($what)
1645	SendCmd "outline visible $bool"
1646	}
1647	}
1648	"-stretchtofit" {
1649	set bool $_settings($what)
1650	if { $bool } {
1651	set heightScale [GetHeightmapScale]
1652	if {$heightScale == 0} {
1653	SendCmd "camera aspect window"
1654	} else {
1655	SendCmd "camera aspect square"
1656	}
1657	} else {
1658	SendCmd "camera aspect native"
1659	}
1660	Zoom reset
1661	}
1662	"-wireframe" {
1663	set bool $_settings($what)
1664	SendCmd "heightmap wireframe $bool"
1665	}
1666	default {
1667	error "don't know how to fix $what"
1668	}
1669	}
1670	}
1671
1672	#
1673	# RequestLegend --
1674	#
1675	# Request a new legend from the server. The size of the legend
1676	# is determined from the height of the canvas.
1677	#
1678	# This should be called when
1679	# 1. A new current colormap is set.
1680	# 2. Window is resized.
1681	# 3. The limits of the data have changed. (Just need a redraw).
1682	# 4. Number of isolines have changed. (Just need a redraw).
1683	# 5. Legend becomes visible (Just need a redraw).
1684	#
1685	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1686	set _legendPending 0
1687	set font "Arial 8"
1688	set w 12
1689	set lineht [font metrics $font -linespace]
1690	# color ramp height = (canvas height) - (min and max value lines) - 2
1691	set h [expr {$_height - 2 * ($lineht + 2)}]
1692	set _legendHeight $h
1693
1694	set fname $_curFldName
1695	if { [string match "component*" $fname] } {
1696	set title ""
1697	} else {
1698	if { [info exists _fields($fname)] } {
1699	foreach { title units } $_fields($fname) break
1700	if { $units != "" } {
1701	set title [format "%s (%s)" $title $units]
1702	}
1703	} else {
1704	set title $fname
1705	}
1706	}
1707	# If there's a title too, substract one more line
1708	if { $title != "" } {
1709	incr h -$lineht
1710	}
1711	if { $h < 1 } {
1712	return
1713	}
1714	# Set the legend on the first heightmap dataset.
1715	if { $_currentColormap != "" } {
1716	set cmap $_currentColormap
1717	SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1718	}
1719	}
1720
1721	#
1722	# ResetAxes --
1723	#
1724	# Set axis z bounds and range
1725	#
1726	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1727	if { ![info exists _limits($_curFldName)]} {
1728	SendCmd "dataset maprange all"
1729	SendCmd "axis autorange z on"
1730	SendCmd "axis autobounds z on"
1731	return
1732	}
1733	foreach { xmin xmax } $_limits(x) break
1734	foreach { ymin ymax } $_limits(y) break
1735	foreach { vmin vmax } $_limits($_curFldName) break
1736
1737	global tcl_precision
1738	set tcl_precision 17
1739	set xr [expr $xmax - $xmin]
1740	set yr [expr $ymax - $ymin]
1741	set vr [expr $vmax - $vmin]
1742	set r [expr ($yr > $xr) ? $yr : $xr]
1743	if { $vr < 1.0e-17 } {
1744	set dataScale 1.0
1745	} else {
1746	set dataScale [expr $r / $vr]
1747	}
1748	set heightScale [GetHeightmapScale]
1749	set bmin [expr $heightScale * $dataScale * $vmin]
1750	set bmax [expr $heightScale * $dataScale * $vmax]
1751	if {$heightScale > 0} {
1752	set zpos [expr - $bmin]
1753	SendCmd "heightmap pos 0 0 $zpos"
1754	} else {
1755	SendCmd "heightmap pos 0 0 0"
1756	}
1757	set bmax [expr $bmax - $bmin]
1758	set bmin 0
1759	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1760	SendCmd "axis bounds z $bmin $bmax"
1761	SendCmd "axis range z $_limits($_curFldName)"
1762	}
1763
1764	#
1765	# SetCurrentColormap --
1766	#
1767	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1768	# Keep track of the colormaps that we build.
1769	if { $name != "none" && ![info exists _colormaps($name)] } {
1770	BuildColormap $name
1771	set _colormaps($name) 1
1772	}
1773	set _currentColormap $name
1774	SendCmd "heightmap colormap $_currentColormap"
1775	}
1776
1777
1778	#
1779	# BuildColormap --
1780	#
1781	# Build the designated colormap on the server.
1782	#
1783	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1784	set cmap [ColorsToColormap $name]
1785	if { [llength $cmap] == 0 } {
1786	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1787	}
1788	set wmap "0.0 1.0 1.0 1.0"
1789	SendCmd "colormap add $name { $cmap } { $wmap }"
1790	}
1791
1792	# ----------------------------------------------------------------------
1793	# CONFIGURATION OPTION: -mode
1794	# ----------------------------------------------------------------------
1795	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1796	switch -- $itk_option(-mode) {
1797	"heightmap" {
1798	set _settings(-isheightmap) 1
1799	}
1800	"contour" {
1801	set _settings(-isheightmap) 0
1802	}
1803	default {
1804	error "unknown mode settings \"$itk_option(-mode)\""
1805	}
1806	}
1807	if { !$_reset } {
1808	AdjustSetting -isheightmap
1809	}
1810	}
1811
1812	# ----------------------------------------------------------------------
1813	# CONFIGURATION OPTION: -plotbackground
1814	# ----------------------------------------------------------------------
1815	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1816	if { [isconnected] } {
1817	set rgb [Color2RGB $itk_option(-plotbackground)]
1818	if { !$_reset } {
1819	SendCmd "screen bgcolor $rgb"
1820	}
1821	$itk_component(view) configure -background $itk_option(-plotbackground)
1822	}
1823	}
1824
1825	# ----------------------------------------------------------------------
1826	# CONFIGURATION OPTION: -plotforeground
1827	# ----------------------------------------------------------------------
1828	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1829	if { [isconnected] } {
1830	set rgb [Color2RGB $itk_option(-plotforeground)]
1831	if { !$_reset } {
1832	SendCmd "outline color $rgb"
1833	SendCmd "axis color all $rgb"
1834	}
1835	}
1836	}
1837
1838	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1839
1840	set fg [option get $itk_component(hull) font Font]
1841	#set bfg [option get $itk_component(hull) boldFont Font]
1842
1843	set inner [$itk_component(main) insert end \
1844	-title "Contour/Surface Settings" \
1845	-icon [Rappture::icon contour2]]
1846	$inner configure -borderwidth 4
1847
1848	checkbutton $inner.legend \
1849	-text "Legend" \
1850	-variable [itcl::scope _settings(-legendvisible)] \
1851	-command [itcl::code $this AdjustSetting -legendvisible] \
1852	-font "Arial 9"
1853
1854	checkbutton $inner.wireframe \
1855	-text "Wireframe" \
1856	-variable [itcl::scope _settings(-wireframe)] \
1857	-command [itcl::code $this AdjustSetting -wireframe] \
1858	-font "Arial 9"
1859
1860	itk_component add lighting {
1861	checkbutton $inner.lighting \
1862	-text "Enable Lighting" \
1863	-variable [itcl::scope _settings(-lighting)] \
1864	-command [itcl::code $this AdjustSetting -lighting] \
1865	-font "Arial 9"
1866	} {
1867	ignore -font
1868	}
1869	checkbutton $inner.edges \
1870	-text "Edges" \
1871	-variable [itcl::scope _settings(-edges)] \
1872	-command [itcl::code $this AdjustSetting -edges] \
1873	-font "Arial 9"
1874
1875	itk_component add outline {
1876	checkbutton $inner.outline \
1877	-text "Outline" \
1878	-variable [itcl::scope _settings(-outline)] \
1879	-command [itcl::code $this AdjustSetting -outline] \
1880	-font "Arial 9"
1881	} {
1882	ignore -font
1883	}
1884	checkbutton $inner.stretch \
1885	-text "Stretch to fit" \
1886	-variable [itcl::scope _settings(-stretchtofit)] \
1887	-command [itcl::code $this AdjustSetting -stretchtofit] \
1888	-font "Arial 9"
1889
1890	checkbutton $inner.isolines \
1891	-text "Isolines" \
1892	-variable [itcl::scope _settings(-isolinesvisible)] \
1893	-command [itcl::code $this AdjustSetting -isolinesvisible] \
1894	-font "Arial 9"
1895
1896	checkbutton $inner.colormapDiscrete \
1897	-text "Discrete Colormap" \
1898	-variable [itcl::scope _settings(-colormapdiscrete)] \
1899	-command [itcl::code $this AdjustSetting -colormapdiscrete] \
1900	-font "Arial 9"
1901
1902	itk_component add field_l {
1903	label $inner.field_l -text "Field" -font "Arial 9"
1904	} {
1905	ignore -font
1906	}
1907	itk_component add field {
1908	Rappture::Combobox $inner.field -width 10 -editable no
1909	}
1910	bind $inner.field <<Value>> \
1911	[itcl::code $this AdjustSetting -field]
1912
1913	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1914	itk_component add colormap {
1915	Rappture::Combobox $inner.colormap -width 10 -editable no
1916	}
1917	$inner.colormap choices insert end [GetColormapList -includeNone]
1918	$itk_component(colormap) value $_settings(-colormap)
1919	bind $inner.colormap <<Value>> \
1920	[itcl::code $this AdjustSetting -colormap]
1921
1922	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1923	itk_component add isolinecolor {
1924	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1925	}
1926	$inner.isolinecolor choices insert end \
1927	"black" "black" \
1928	"blue" "blue" \
1929	"cyan" "cyan" \
1930	"green" "green" \
1931	"grey" "grey" \
1932	"magenta" "magenta" \
1933	"orange" "orange" \
1934	"red" "red" \
1935	"white" "white" \
1936	"none" "none"
1937
1938	$itk_component(isolinecolor) value $_settings(-isolinecolor)
1939	bind $inner.isolinecolor <<Value>> \
1940	[itcl::code $this AdjustSetting -isolinecolor]
1941
1942	label $inner.background_l -text "Background Color" -font "Arial 9"
1943	itk_component add background {
1944	Rappture::Combobox $inner.background -width 10 -editable no
1945	}
1946	$inner.background choices insert end \
1947	"black" "black" \
1948	"white" "white" \
1949	"grey" "grey"
1950
1951	$itk_component(background) value "white"
1952	bind $inner.background <<Value>> \
1953	[itcl::code $this AdjustSetting -background]
1954
1955	itk_component add opacity_l {
1956	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1957	} {
1958	ignore -font
1959	}
1960	itk_component add opacity {
1961	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1962	-variable [itcl::scope _settings(-opacity)] \
1963	-showvalue off \
1964	-command [itcl::code $this AdjustSetting -opacity]
1965	}
1966	itk_component add scale_l {
1967	label $inner.scale_l -text "Scale" -font "Arial 9"
1968	} {
1969	ignore -font
1970	}
1971	itk_component add scale {
1972	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1973	-variable [itcl::scope _settings(-heightmapscale)] \
1974	-showvalue off \
1975	-command [itcl::code $this AdjustSetting -heightmapscale]
1976	}
1977	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1978	itk_component add numisolines {
1979	Rappture::Spinint $inner.numisolines \
1980	-min 0 -max 50 -font "arial 9"
1981	}
1982	$itk_component(numisolines) value $_settings(-numisolines)
1983	bind $itk_component(numisolines) <<Value>> \
1984	[itcl::code $this AdjustSetting -numisolines]
1985
1986	frame $inner.separator1 -height 2 -relief sunken -bd 1
1987	frame $inner.separator2 -height 2 -relief sunken -bd 1
1988
1989	blt::table $inner \
1990	0,0 $inner.field_l -anchor w -pady 2 \
1991	0,1 $inner.field -anchor w -pady 2 -fill x \
1992	1,0 $inner.colormap_l -anchor w -pady 2 \
1993	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1994	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
1995	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
1996	3,0 $inner.background_l -anchor w -pady 2 \
1997	3,1 $inner.background -anchor w -pady 2 -fill x \
1998	4,0 $inner.numisolines_l -anchor w -pady 2 \
1999	4,1 $inner.numisolines -anchor w -pady 2 \
2000	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
2001	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
2002	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
2003	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
2004	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
2005	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
2006	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
2007	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
2008	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
2009	14,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
2010	15,0 $inner.opacity_l -anchor w -pady 2 \
2011	15,1 $inner.opacity -fill x -pady 2 \
2012	16,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
2013	16,1 $inner.scale -fill x -pady 2 -cspan 2 \
2014
2015	blt::table configure $inner r* c* -resize none
2016	blt::table configure $inner r17 c1 -resize expand
2017	}
2018
2019	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
2020
2021	set fg [option get $itk_component(hull) font Font]
2022	#set bfg [option get $itk_component(hull) boldFont Font]
2023
2024	set inner [$itk_component(main) insert end \
2025	-title "Axis Settings" \
2026	-icon [Rappture::icon axis2]]
2027	$inner configure -borderwidth 4
2028
2029	checkbutton $inner.visible \
2030	-text "Axes" \
2031	-variable [itcl::scope _settings(-axisvisible)] \
2032	-command [itcl::code $this AdjustSetting -axisvisible] \
2033	-font "Arial 9"
2034	checkbutton $inner.labels \
2035	-text "Axis Labels" \
2036	-variable [itcl::scope _settings(-axislabels)] \
2037	-command [itcl::code $this AdjustSetting -axislabels] \
2038	-font "Arial 9"
2039	label $inner.grid_l -text "Grid" -font "Arial 9"
2040	checkbutton $inner.xgrid \
2041	-text "X" \
2042	-variable [itcl::scope _settings(-xgrid)] \
2043	-command [itcl::code $this AdjustSetting -xgrid] \
2044	-font "Arial 9"
2045	checkbutton $inner.ygrid \
2046	-text "Y" \
2047	-variable [itcl::scope _settings(-ygrid)] \
2048	-command [itcl::code $this AdjustSetting -ygrid] \
2049	-font "Arial 9"
2050	checkbutton $inner.zgrid \
2051	-text "Z" \
2052	-variable [itcl::scope _settings(-zgrid)] \
2053	-command [itcl::code $this AdjustSetting -zgrid] \
2054	-font "Arial 9"
2055	checkbutton $inner.minorticks \
2056	-text "Minor Ticks" \
2057	-variable [itcl::scope _settings(-axisminorticks)] \
2058	-command [itcl::code $this AdjustSetting -axisminorticks] \
2059	-font "Arial 9"
2060
2061	label $inner.mode_l -text "Mode" -font "Arial 9"
2062
2063	itk_component add axisflymode {
2064	Rappture::Combobox $inner.mode -width 10 -editable no
2065	}
2066	$inner.mode choices insert end \
2067	"static_triad" "static" \
2068	"closest_triad" "closest" \
2069	"furthest_triad" "farthest" \
2070	"outer_edges" "outer"
2071	$itk_component(axisflymode) value $_settings(-axisflymode)
2072	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
2073
2074	blt::table $inner \
2075	0,0 $inner.visible -anchor w -cspan 4 \
2076	1,0 $inner.labels -anchor w -cspan 4 \
2077	2,0 $inner.minorticks -anchor w -cspan 4 \
2078	4,0 $inner.grid_l -anchor w \
2079	4,1 $inner.xgrid -anchor w \
2080	4,2 $inner.ygrid -anchor w \
2081	4,3 $inner.zgrid -anchor w \
2082	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2083	5,1 $inner.mode -fill x -cspan 3
2084
2085	blt::table configure $inner r* c* -resize none
2086	blt::table configure $inner r7 c6 -resize expand
2087	blt::table configure $inner r3 -height 0.125i
2088	}
2089
2090
2091	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2092	set inner [$itk_component(main) insert end \
2093	-title "Camera Settings" \
2094	-icon [Rappture::icon camera]]
2095	$inner configure -borderwidth 4
2096
2097	label $inner.view_l -text "view" -font "Arial 9"
2098	set f [frame $inner.view]
2099	foreach side { front back left right top bottom } {
2100	button $f.$side -image [Rappture::icon view$side] \
2101	-command [itcl::code $this SetOrientation $side]
2102	Rappture::Tooltip::for $f.$side "Change the view to $side"
2103	pack $f.$side -side left
2104	}
2105
2106	blt::table $inner \
2107	0,0 $inner.view_l -anchor e -pady 2 \
2108	0,1 $inner.view -anchor w -pady 2
2109
2110	set labels { qx qy qz qw xpan ypan zoom }
2111	set row 1
2112	foreach tag $labels {
2113	label $inner.${tag}label -text $tag -font "Arial 9"
2114	entry $inner.${tag} -font "Arial 9" -bg white \
2115	-textvariable [itcl::scope _view($tag)]
2116	bind $inner.${tag} <Return> \
2117	[itcl::code $this camera set ${tag}]
2118	bind $inner.${tag} <KP_Enter> \
2119	[itcl::code $this camera set ${tag}]
2120	blt::table $inner \
2121	$row,0 $inner.${tag}label -anchor e -pady 2 \
2122	$row,1 $inner.${tag} -anchor w -pady 2
2123	blt::table configure $inner r$row -resize none
2124	incr row
2125	}
2126	checkbutton $inner.ortho \
2127	-text "Orthographic Projection" \
2128	-variable [itcl::scope _view(ortho)] \
2129	-command [itcl::code $this camera set ortho] \
2130	-font "Arial 9"
2131	blt::table $inner \
2132	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2133	blt::table configure $inner r$row -resize none
2134	incr row
2135
2136	blt::table configure $inner c* r* -resize none
2137	blt::table configure $inner c2 -resize expand
2138	blt::table configure $inner r$row -resize expand
2139	}
2140
2141	#
2142	# camera --
2143	#
2144	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2145	switch -- $option {
2146	"show" {
2147	puts [array get _view]
2148	}
2149	"set" {
2150	set who [lindex $args 0]
2151	set x $_view($who)
2152	set code [catch { string is double $x } result]
2153	if { $code != 0 \|\| !$result } {
2154	return
2155	}
2156	switch -- $who {
2157	"ortho" {
2158	if {$_view(ortho)} {
2159	SendCmd "camera mode ortho"
2160	} else {
2161	SendCmd "camera mode persp"
2162	}
2163	}
2164	"xpan" - "ypan" {
2165	PanCamera
2166	}
2167	"qx" - "qy" - "qz" - "qw" {
2168	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2169	$_arcball quaternion $q
2170	EventuallyRotate $q
2171	}
2172	"zoom" {
2173	SendCmd "camera zoom $_view(zoom)"
2174	}
2175	}
2176	}
2177	}
2178	}
2179
2180	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2181	set bytes ""
2182	foreach dataobj [get] {
2183	foreach comp [$dataobj components] {
2184	set tag $dataobj-$comp
2185	set contents [$dataobj vtkdata $comp]
2186	append bytes "$contents\n"
2187	}
2188	}
2189	return [list .vtk $bytes]
2190	}
2191
2192	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2193	if { [image width $_image(download)] > 0 &&
2194	[image height $_image(download)] > 0 } {
2195	set bytes [$_image(download) data -format "jpeg -quality 100"]
2196	set bytes [Rappture::encoding::decode -as b64 $bytes]
2197	return [list .jpg $bytes]
2198	}
2199	return ""
2200	}
2201
2202	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2203	Rappture::Balloon $popup \
2204	-title "[Rappture::filexfer::label downloadWord] as..."
2205	set inner [$popup component inner]
2206	label $inner.summary -text "" -anchor w
2207	radiobutton $inner.vtk_button -text "VTK data file" \
2208	-variable [itcl::scope _downloadPopup(format)] \
2209	-font "Arial 9 " \
2210	-value vtk
2211	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2212	radiobutton $inner.image_button -text "Image File" \
2213	-variable [itcl::scope _downloadPopup(format)] \
2214	-font "Arial 9 " \
2215	-value image
2216	Rappture::Tooltip::for $inner.image_button \
2217	"Save as digital image."
2218
2219	button $inner.ok -text "Save" \
2220	-highlightthickness 0 -pady 2 -padx 3 \
2221	-command $command \
2222	-compound left \
2223	-image [Rappture::icon download]
2224
2225	button $inner.cancel -text "Cancel" \
2226	-highlightthickness 0 -pady 2 -padx 3 \
2227	-command [list $popup deactivate] \
2228	-compound left \
2229	-image [Rappture::icon cancel]
2230
2231	blt::table $inner \
2232	0,0 $inner.summary -cspan 2 \
2233	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2234	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2235	4,1 $inner.cancel -width .9i -fill y \
2236	4,0 $inner.ok -padx 2 -width .9i -fill y
2237	blt::table configure $inner r3 -height 4
2238	blt::table configure $inner r4 -pady 4
2239	raise $inner.image_button
2240	$inner.vtk_button invoke
2241	return $inner
2242	}
2243
2244	#
2245	# SetObjectStyle --
2246	#
2247	# Set the style of the heightmap/contour object. This gets calls
2248	# for each dataset once as it is loaded. It can overridden by
2249	# the user controls.
2250	#
2251	#
2252	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2253	# Parse style string.
2254	set tag $dataobj-$comp
2255	array set style {
2256	-color BCGYR
2257	-levels 10
2258	-opacity 1.0
2259	}
2260	set stylelist [$dataobj style $comp]
2261	if { $stylelist != "" } {
2262	array set style $stylelist
2263	}
2264	# This is too complicated. We want to set the colormap, number of
2265	# isolines and opacity for the dataset. They can be the default values,
2266	# the style hints loaded with the dataset, or set by user controls. As
2267	# datasets get loaded, they first use the defaults that are overidden
2268	# by the style hints. If the user changes the global controls, then that
2269	# overrides everything else. I don't know what it means when global
2270	# controls are specified as style hints by each dataset. It complicates
2271	# the code to handle aberrant cases.
2272
2273	if { $_changed(-opacity) } {
2274	set style(-opacity) [expr $_settings(-opacity) * 0.01]
2275	}
2276	if { $_changed(-numisolines) } {
2277	set style(-levels) $_settings(-numisolines)
2278	}
2279	if { $_changed(-colormap) } {
2280	set style(-color) $_settings(-colormap)
2281	}
2282	if { $_currentColormap == "" } {
2283	$itk_component(colormap) value $style(-color)
2284	}
2285	if { [info exists style(-stretchtofit)] } {
2286	set _settings(-stretchtofit) $style(-stretchtofit)
2287	AdjustSetting -stretchtofit
2288	}
2289	if { $_currentNumIsolines != $style(-levels) } {
2290	set _currentNumIsolines $style(-levels)
2291	set _settings(-numisolines) $_currentNumIsolines
2292	$itk_component(numisolines) value $_currentNumIsolines
2293	UpdateContourList
2294	DrawLegend
2295	}
2296	SendCmd "outline add $tag"
2297	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2298	SendCmd "outline visible $_settings(-outline) $tag"
2299	set scale [GetHeightmapScale]
2300	SendCmd "[list heightmap add contourlist $_contourList $scale $tag]"
2301	set _comp2scale($tag) $_settings(-heightmapscale)
2302	SendCmd "heightmap edges $_settings(-edges) $tag"
2303	SendCmd "heightmap wireframe $_settings(-wireframe) $tag"
2304	SetCurrentColormap $style(-color)
2305	set color [$itk_component(isolinecolor) value]
2306	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2307	SendCmd "heightmap lighting $_settings(-isheightmap) $tag"
2308	SendCmd "heightmap isolines $_settings(-isolinesvisible) $tag"
2309	SendCmd "heightmap surface $_settings(-colormapvisible) $tag"
2310	SendCmd "heightmap opacity $style(-opacity) $tag"
2311	set _settings(-opacity) [expr $style(-opacity) * 100.0]
2312	}
2313
2314	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2315	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2316	return 0
2317	}
2318	return 1
2319	}
2320
2321	# ----------------------------------------------------------------------
2322	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2323	#
2324	# Invoked automatically whenever the "legend" command comes in from
2325	# the rendering server. Indicates that binary image data with the
2326	# specified <size> will follow.
2327	# ----------------------------------------------------------------------
2328	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2329	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2330	if { [isconnected] } {
2331	set bytes [ReceiveBytes $size]
2332	if { ![info exists _image(legend)] } {
2333	set _image(legend) [image create photo]
2334	}
2335	$_image(legend) configure -data $bytes
2336	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2337	if { [catch {DrawLegend} errs] != 0 } {
2338	global errorInfo
2339	puts stderr "errs=$errs errorInfo=$errorInfo"
2340	}
2341	}
2342	}
2343
2344	#
2345	# DrawLegend --
2346	#
2347	# Draws the legend in the own canvas on the right side of the plot area.
2348	#
2349	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2350	set fname $_curFldName
2351	set c $itk_component(view)
2352	set w [winfo width $c]
2353	set h [winfo height $c]
2354	set font "Arial 8"
2355	set lineht [font metrics $font -linespace]
2356
2357	if { [string match "component*" $fname] } {
2358	set title ""
2359	} else {
2360	if { [info exists _fields($fname)] } {
2361	foreach { title units } $_fields($fname) break
2362	if { $units != "" } {
2363	set title [format "%s (%s)" $title $units]
2364	}
2365	} else {
2366	set title $fname
2367	}
2368	}
2369	set x [expr $w - 2]
2370	if { !$_settings(-legendvisible) } {
2371	$c delete legend
2372	return
2373	}
2374	if { [$c find withtag "legend"] == "" } {
2375	set y 2
2376	# If there's a legend title, create a text item for the title.
2377	$c create text $x $y \
2378	-anchor ne \
2379	-fill $itk_option(-plotforeground) -tags "title legend" \
2380	-font $font
2381	if { $title != "" } {
2382	incr y $lineht
2383	}
2384	$c create text $x $y \
2385	-anchor ne \
2386	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2387	-font $font
2388	incr y $lineht
2389	$c create image $x $y \
2390	-anchor ne \
2391	-image $_image(legend) -tags "colormap legend"
2392	$c create rectangle $x $y 1 1 \
2393	-fill "" -outline "" -tags "sensor legend"
2394	$c create text $x [expr {$h-2}] \
2395	-anchor se \
2396	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2397	-font $font
2398	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2399	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2400	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2401	}
2402	$c delete isoline
2403	set x2 $x
2404	set iw [image width $_image(legend)]
2405	set ih [image height $_image(legend)]
2406	set x1 [expr $x2 - ($iw*12)/10]
2407	set color [$itk_component(isolinecolor) value]
2408
2409	# Draw the isolines on the legend.
2410	array unset _isolines
2411	if { $color != "none" && [info exists _limits($_curFldName)] &&
2412	$_settings(-isolinesvisible) && $_currentNumIsolines > 0 } {
2413
2414	foreach { vmin vmax } $_limits($_curFldName) break
2415	set range [expr double($vmax - $vmin)]
2416	if { $range <= 0.0 } {
2417	set range 1.0; # Min is greater or equal to max.
2418	}
2419	set tags "isoline legend"
2420	set offset [expr 2 + $lineht]
2421	if { $title != "" } {
2422	incr offset $lineht
2423	}
2424	foreach value $_contourList {
2425	set norm [expr 1.0 - (($value - $vmin) / $range)]
2426	set y1 [expr int(round(($norm * $ih) + $offset))]
2427	for { set off 0 } { $off < 3 } { incr off } {
2428	set _isolines([expr $y1 + $off]) $value
2429	set _isolines([expr $y1 - $off]) $value
2430	}
2431	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2432	}
2433	}
2434
2435	$c bind title <ButtonPress> [itcl::code $this Combo post]
2436	$c bind title <Enter> [itcl::code $this Combo activate]
2437	$c bind title <Leave> [itcl::code $this Combo deactivate]
2438	# Reset the item coordinates according the current size of the plot.
2439	if { [info exists _limits($_curFldName)] } {
2440	foreach { vmin vmax } $_limits($_curFldName) break
2441	$c itemconfigure vmin -text [format %g $vmin]
2442	$c itemconfigure vmax -text [format %g $vmax]
2443	}
2444	set y 2
2445	# If there's a legend title, move the title to the correct position
2446	if { $title != "" } {
2447	$c itemconfigure title -text $title
2448	$c coords title $x $y
2449	incr y $lineht
2450	}
2451	$c coords vmax $x $y
2452	incr y $lineht
2453	$c coords colormap $x $y
2454	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2455	$c raise sensor
2456	$c coords vmin $x [expr {$h - 2}]
2457	}
2458
2459	#
2460	# EnterLegend --
2461	#
2462	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2463	SetLegendTip $x $y
2464	}
2465
2466	#
2467	# MotionLegend --
2468	#
2469	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2470	Rappture::Tooltip::tooltip cancel
2471	set c $itk_component(view)
2472	set cw [winfo width $c]
2473	set ch [winfo height $c]
2474	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2475	SetLegendTip $x $y
2476	}
2477	}
2478
2479	#
2480	# LeaveLegend --
2481	#
2482	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2483	Rappture::Tooltip::tooltip cancel
2484	.rappturetooltip configure -icon ""
2485	}
2486
2487	#
2488	# SetLegendTip --
2489	#
2490	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2491	set fname $_curFldName
2492	set c $itk_component(view)
2493	set w [winfo width $c]
2494	set h [winfo height $c]
2495	set font "Arial 8"
2496	set lineht [font metrics $font -linespace]
2497
2498	set ih [image height $_image(legend)]
2499	# Subtract off the offset of the color ramp from the top of the canvas
2500	set iy [expr $y - ($lineht + 2)]
2501
2502	if { [string match "component*" $fname] } {
2503	set title ""
2504	} else {
2505	if { [info exists _fields($fname)] } {
2506	foreach { title units } $_fields($fname) break
2507	if { $units != "" } {
2508	set title [format "%s (%s)" $title $units]
2509	}
2510	} else {
2511	set title $fname
2512	}
2513	}
2514	# If there's a legend title, increase the offset by the line height.
2515	if { $title != "" } {
2516	incr iy -$lineht
2517	}
2518
2519	# Make a swatch of the selected color
2520	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2521	return
2522	}
2523
2524	if { ![info exists _image(swatch)] } {
2525	set _image(swatch) [image create photo -width 24 -height 24]
2526	}
2527	set color [eval format "\#%02x%02x%02x" $pixel]
2528	$_image(swatch) put black -to 0 0 23 23
2529	$_image(swatch) put $color -to 1 1 22 22
2530
2531	# Compute the value of the point
2532	if { [info exists _limits($fname)] } {
2533	foreach { vmin vmax } $_limits($fname) break
2534	set t [expr 1.0 - (double($iy) / double($ih-1))]
2535	set value [expr $t * ($vmax - $vmin) + $vmin]
2536	} else {
2537	set value 0.0
2538	}
2539	set tipx [expr $x + 15]
2540	set tipy [expr $y - 5]
2541	.rappturetooltip configure -icon $_image(swatch)
2542	if { [info exists _isolines($y)] } {
2543	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2544	} else {
2545	Rappture::Tooltip::text $c [format "$title %g" $value]
2546	}
2547	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2548	}
2549
2550	# ----------------------------------------------------------------------
2551	# USAGE: _dropdown post
2552	# USAGE: _dropdown unpost
2553	# USAGE: _dropdown select
2554	#
2555	# Used internally to handle the dropdown list for this combobox. The
2556	# post/unpost options are invoked when the list is posted or unposted
2557	# to manage the relief of the controlling button. The select option
2558	# is invoked whenever there is a selection from the list, to assign
2559	# the value back to the gauge.
2560	# ----------------------------------------------------------------------
2561	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2562	set c $itk_component(view)
2563	switch -- $option {
2564	post {
2565	foreach { x1 y1 x2 y2 } [$c bbox title] break
2566	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2567	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2568	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2569	tk_popup $itk_component(fieldmenu) $x $y
2570	}
2571	activate {
2572	$c itemconfigure title -fill red
2573	}
2574	deactivate {
2575	$c itemconfigure title -fill $itk_option(-plotforeground)
2576	}
2577	invoke {
2578	$itk_component(field) value $_curFldLabel
2579	AdjustSetting -field
2580	}
2581	default {
2582	error "bad option \"$option\": should be post, unpost, select"
2583	}
2584	}
2585	}
2586
2587	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2588	if { $_settings(-isheightmap) } {
2589	set val $_settings(-heightmapscale)
2590	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2591	return $sval
2592	}
2593	return 0
2594	}
2595
2596	itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2597	array set positions {
2598	front "0.707107 0.707107 0 0"
2599	back "0 0 0.707107 0.707107"
2600	left "0.5 0.5 -0.5 -0.5"
2601	right "0.5 0.5 0.5 0.5"
2602	top "1 0 0 0"
2603	bottom "0 1 0 0"
2604	}
2605	foreach name { qw qx qy qz } value $positions($side) {
2606	set _view($name) $value
2607	}
2608	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2609	$_arcball quaternion $q
2610	SendCmd "camera orient $q"
2611	SendCmd "camera reset"
2612	set _view(xpan) 0
2613	set _view(ypan) 0
2614	set _view(zoom) 1.0
2615	}
2616
2617	itcl::body Rappture::VtkHeightmapViewer::UpdateContourList {} {
2618	if {$_currentNumIsolines == 0} {
2619	set _contourList ""
2620	return
2621	}
2622	if { ![info exists _limits($_curFldName)] } {
2623	return
2624	}
2625	foreach { vmin vmax } $_limits($_curFldName) break
2626	set v [blt::vector create \#auto]
2627	$v seq $vmin $vmax [expr $_currentNumIsolines+2]
2628	$v delete end 0
2629	set _contourList [$v range 0 end]
2630	blt::vector destroy $v
2631	}

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