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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 3934

Last change on this file since 3934 was 3934, checked in by ldelgass, 11 years ago
Remove debug prints from heightmap viewer
File size: 87.5 KB

Line
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) 2004-2012 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 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	private variable _currentOpacity ""
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 "vmag";# 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	axisMinorTicks 1
220	stretchToFit 0
221	axisLabels 1
222	axisVisible 1
223	axisXGrid 0
224	axisYGrid 0
225	axisZGrid 0
226	colormapVisible 1
227	colormapDiscrete 0
228	edges 0
229	field "Default"
230	heightmapScale 50
231	isHeightmap 0
232	isolineColor black
233	isolinesVisible 1
234	legendVisible 1
235	lighting 1
236	saveLighting 1
237	numIsolines 10
238	opacity 100
239	outline 0
240	wireframe 0
241	saveOpacity 100
242	saveOutline 0
243	}
244	array set _changed {
245	opacity 0
246	colormap 0
247	numIsolines 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 Zoom reset]
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 buffing 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 "hub" [exec hostname]
769	lappend info "client" "vtkheightmapviewer"
770	lappend info "user" $user
771	lappend info "session" $session
772	SendCmd "clientinfo [list $info]"
773	}
774	set w [winfo width $itk_component(view)]
775	set h [winfo height $itk_component(view)]
776	EventuallyResize $w $h
777	}
778	return $result
779	}
780
781	#
782	# isconnected --
783	#
784	# Indicates if we are currently connected to the visualization server.
785	#
786	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
787	return [VisViewer::IsConnected]
788	}
789
790	#
791	# disconnect --
792	#
793	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
794	Disconnect
795	set _reset 1
796	}
797
798	#
799	# Disconnect --
800	#
801	# Clients use this method to disconnect from the current rendering
802	# server.
803	#
804	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
805	VisViewer::Disconnect
806
807	$_dispatcher cancel !rebuild
808	$_dispatcher cancel !resize
809	$_dispatcher cancel !rotate
810	$_dispatcher cancel !legend
811	# disconnected -- no more data sitting on server
812	array unset _datasets
813	array unset _data
814	array unset _colormaps
815	array unset _obj2datasets
816	global readyForNextFrame
817	set readyForNextFrame 1
818	}
819
820	# ----------------------------------------------------------------------
821	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
822	#
823	# Invoked automatically whenever the "image" command comes in from
824	# the rendering server. Indicates that binary image data with the
825	# specified <size> will follow.
826	# ----------------------------------------------------------------------
827	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
828	global readyForNextFrame
829	set readyForNextFrame 1
830	array set info {
831	-token "???"
832	-bytes 0
833	-type image
834	}
835	array set info $args
836	set bytes [ReceiveBytes $info(-bytes)]
837	if { $info(-type) == "image" } {
838	if 0 {
839	set f [open "last.ppm" "w"]
840	puts $f $bytes
841	close $f
842	}
843	$_image(plot) configure -data $bytes
844	set time [clock seconds]
845	set date [clock format $time]
846	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
847	if { $_start > 0 } {
848	set finish [clock clicks -milliseconds]
849	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
850	set _start 0
851	}
852	} elseif { $info(type) == "print" } {
853	set tag $this-print-$info(-token)
854	set _hardcopy($tag) $bytes
855	}
856	}
857
858	#
859	# ReceiveDataset --
860	#
861	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
862	if { ![isconnected] } {
863	return
864	}
865	set option [lindex $args 0]
866	switch -- $option {
867	"scalar" {
868	set option [lindex $args 1]
869	switch -- $option {
870	"world" {
871	foreach { x y z value tag } [lrange $args 2 end] break
872	}
873	"pixel" {
874	foreach { x y value tag } [lrange $args 2 end] break
875	}
876	}
877	}
878	"vector" {
879	set option [lindex $args 1]
880	switch -- $option {
881	"world" {
882	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
883	}
884	"pixel" {
885	foreach { x y vx vy vz tag } [lrange $args 2 end] break
886	}
887	}
888	}
889	"names" {
890	foreach { name } [lindex $args 1] {
891	#puts stderr "Dataset: $name"
892	}
893	}
894	default {
895	error "unknown dataset option \"$option\" from server"
896	}
897	}
898	}
899
900	# ----------------------------------------------------------------------
901	# USAGE: Rebuild
902	#
903	# Called automatically whenever something changes that affects the
904	# data in the widget. Clears any existing data and rebuilds the
905	# widget to display new data.
906	# ----------------------------------------------------------------------
907	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
908	set w [winfo width $itk_component(view)]
909	set h [winfo height $itk_component(view)]
910	if { $w < 2 \|\| $h < 2 } {
911	$_dispatcher event -idle !rebuild
912	return
913	}
914
915	# Turn on buffering of commands to the server. We don't want to
916	# be preempted by a server disconnect/reconnect (which automatically
917	# generates a new call to Rebuild).
918	StartBufferingCommands
919
920	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
921	set _width $w
922	set _height $h
923	$_arcball resize $w $h
924	DoResize
925	if { $_settings(stretchToFit) } {
926	AdjustSetting stretchToFit
927	}
928	}
929	if { $_reset } {
930	#
931	# Reset the camera and other view parameters
932	#
933	InitSettings isHeightmap background
934
935	# Let's see how this goes. I think it's preferable to overloading the
936	# axis title with the exponent.
937	SendCmd "axis exp 0 0 0 1"
938
939	SendCmd "axis lrot z 90"
940	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
941	$_arcball quaternion $q
942	if {$_settings(isHeightmap) } {
943	if { $_view(ortho)} {
944	SendCmd "camera mode ortho"
945	} else {
946	SendCmd "camera mode persp"
947	}
948	DoRotate
949	SendCmd "camera reset"
950	}
951	PanCamera
952	StopBufferingCommands
953	SendCmd "imgflush"
954	StartBufferingCommands
955	}
956
957	set _first ""
958	# Start off with no datasets are visible.
959	SendCmd "dataset visible 0"
960	set scale [GetHeightmapScale]
961	foreach dataobj [get -objects] {
962	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
963	set _first $dataobj
964	}
965	set _obj2datasets($dataobj) ""
966	foreach comp [$dataobj components] {
967	set tag $dataobj-$comp
968	if { ![info exists _datasets($tag)] } {
969	set bytes [$dataobj vtkdata $comp]
970	if 0 {
971	set f [open /tmp/vtkheightmap.vtk "w"]
972	puts $f $bytes
973	close $f
974	}
975	set length [string length $bytes]
976	if { $_reportClientInfo } {
977	set info {}
978	lappend info "tool_id" [$dataobj hints toolId]
979	lappend info "tool_name" [$dataobj hints toolName]
980	lappend info "tool_version" [$dataobj hints toolRevision]
981	lappend info "tool_title" [$dataobj hints toolTitle]
982	lappend info "dataset_label" [$dataobj hints label]
983	lappend info "dataset_size" $length
984	lappend info "dataset_tag" $tag
985	SendCmd [list "clientinfo" $info]
986	}
987	SendCmd "dataset add $tag data follows $length"
988	append _outbuf $bytes
989	set _datasets($tag) 1
990	SetObjectStyle $dataobj $comp
991	}
992	lappend _obj2datasets($dataobj) $tag
993	if { [info exists _obj2ovride($dataobj-raise)] } {
994	# Setting dataset visible enables outline
995	# and heightmap
996	SendCmd "dataset visible 1 $tag"
997	}
998	if { ![info exists _comp2scale($tag)] \|\|
999	$_comp2scale($tag) != $scale } {
1000	SendCmd "heightmap heightscale $scale $tag"
1001	set _comp2scale($tag) $scale
1002	}
1003	}
1004	}
1005	if { $_first != "" } {
1006	$itk_component(field) choices delete 0 end
1007	$itk_component(fieldmenu) delete 0 end
1008	array unset _fields
1009	set _curFldName ""
1010	foreach cname [$_first components] {
1011	foreach fname [$_first fieldnames $cname] {
1012	if { [info exists _fields($fname)] } {
1013	continue
1014	}
1015	foreach { label units components } \
1016	[$_first fieldinfo $fname] break
1017	$itk_component(field) choices insert end "$fname" "$label"
1018	$itk_component(fieldmenu) add radiobutton -label "$label" \
1019	-value $label -variable [itcl::scope _curFldLabel] \
1020	-selectcolor red \
1021	-activebackground $itk_option(-plotbackground) \
1022	-activeforeground $itk_option(-plotforeground) \
1023	-font "Arial 8" \
1024	-command [itcl::code $this Combo invoke]
1025	set _fields($fname) [list $label $units $components]
1026	if { $_curFldName == "" } {
1027	set _curFldName $fname
1028	set _curFldLabel $label
1029	}
1030	}
1031	}
1032	$itk_component(field) value $_curFldLabel
1033	}
1034	InitSettings stretchToFit outline
1035
1036	if { $_reset } {
1037	SendCmd "axis tickpos outside"
1038	foreach axis { x y z } {
1039	SendCmd "axis lformat $axis %g"
1040	}
1041
1042	foreach axis { x y z } {
1043	if { $axis == "z" } {
1044	set label [$_first hints label]
1045	} else {
1046	set label [$_first hints ${axis}label]
1047	}
1048	if { $label == "" } {
1049	if {$axis == "z"} {
1050	if { [string match "component*" $_curFldName] } {
1051	set label [string toupper $axis]
1052	} else {
1053	set label $_curFldLabel
1054	}
1055	} else {
1056	set label [string toupper $axis]
1057	}
1058	}
1059	# May be a space in the axis label.
1060	SendCmd [list axis name $axis $label]
1061
1062	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1063	set units [lindex $_fields($_curFldName) 1]
1064	} else {
1065	set units [$_first hints ${axis}units]
1066	}
1067	if { $units != "" } {
1068	# May be a space in the axis units.
1069	SendCmd [list axis units $axis $units]
1070	}
1071	}
1072	#
1073	# Reset the camera and other view parameters
1074	#
1075	ResetAxes
1076	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1077	$_arcball quaternion $q
1078	if {$_settings(isHeightmap) } {
1079	if { $_view(ortho)} {
1080	SendCmd "camera mode ortho"
1081	} else {
1082	SendCmd "camera mode persp"
1083	}
1084	DoRotate
1085	SendCmd "camera reset"
1086	}
1087	PanCamera
1088	InitSettings axisXGrid axisYGrid axisZGrid \
1089	axisVisible axisLabels heightmapScale field isHeightmap \
1090	numIsolines
1091	if { [array size _fields] < 2 } {
1092	blt::table forget $itk_component(field) $itk_component(field_l)
1093	}
1094	RequestLegend
1095	set _reset 0
1096	}
1097	global readyForNextFrame
1098	set readyForNextFrame 0; # Don't advance to the next frame
1099
1100	# Actually write the commands to the server socket. If it fails, we don't
1101	# care. We're finished here.
1102	blt::busy hold $itk_component(hull)
1103	StopBufferingCommands
1104	blt::busy release $itk_component(hull)
1105	}
1106
1107	# ----------------------------------------------------------------------
1108	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1109	#
1110	# Returns a list of server IDs for the current datasets being displayed. This
1111	# is normally a single ID, but it might be a list of IDs if the current data
1112	# object has multiple components.
1113	# ----------------------------------------------------------------------
1114	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1115	set flag [lindex $args 0]
1116	switch -- $flag {
1117	"-all" {
1118	if { [llength $args] > 1 } {
1119	error "CurrentDatasets: can't specify dataobj after \"-all\""
1120	}
1121	set dlist [get -objects]
1122	}
1123	"-visible" {
1124	if { [llength $args] > 1 } {
1125	set dlist {}
1126	set args [lrange $args 1 end]
1127	foreach dataobj $args {
1128	if { [info exists _obj2ovride($dataobj-raise)] } {
1129	lappend dlist $dataobj
1130	}
1131	}
1132	} else {
1133	set dlist [get -visible]
1134	}
1135	}
1136	default {
1137	set dlist $args
1138	}
1139	}
1140	set rlist ""
1141	foreach dataobj $dlist {
1142	foreach comp [$dataobj components] {
1143	set tag $dataobj-$comp
1144	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1145	lappend rlist $tag
1146	}
1147	}
1148	}
1149	return $rlist
1150	}
1151
1152	# ----------------------------------------------------------------------
1153	# USAGE: Zoom in
1154	# USAGE: Zoom out
1155	# USAGE: Zoom reset
1156	#
1157	# Called automatically when the user clicks on one of the zoom
1158	# controls for this widget. Changes the zoom for the current view.
1159	# ----------------------------------------------------------------------
1160	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1161	switch -- $option {
1162	"in" {
1163	set _view(zoom) [expr {$_view(zoom)*1.25}]
1164	SendCmd "camera zoom $_view(zoom)"
1165	}
1166	"out" {
1167	set _view(zoom) [expr {$_view(zoom)*0.8}]
1168	SendCmd "camera zoom $_view(zoom)"
1169	}
1170	"reset" {
1171	array set _view {
1172	qw 0.36
1173	qx 0.25
1174	qy 0.50
1175	qz 0.70
1176	zoom 1.0
1177	xpan 0
1178	ypan 0
1179	}
1180	if { $_first != "" } {
1181	set location [$_first hints camera]
1182	if { $location != "" } {
1183	array set _view $location
1184	}
1185	}
1186	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1187	$_arcball quaternion $q
1188	if {$_settings(isHeightmap) } {
1189	DoRotate
1190	}
1191	SendCmd "camera reset"
1192	}
1193	}
1194	}
1195
1196	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1197	set x $_view(xpan)
1198	set y $_view(ypan)
1199	SendCmd "camera pan $x $y"
1200	}
1201
1202
1203	# ----------------------------------------------------------------------
1204	# USAGE: Rotate click <x> <y>
1205	# USAGE: Rotate drag <x> <y>
1206	# USAGE: Rotate release <x> <y>
1207	#
1208	# Called automatically when the user clicks/drags/releases in the
1209	# plot area. Moves the plot according to the user's actions.
1210	# ----------------------------------------------------------------------
1211	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1212	switch -- $option {
1213	"click" {
1214	$itk_component(view) configure -cursor fleur
1215	set _click(x) $x
1216	set _click(y) $y
1217	}
1218	"drag" {
1219	if {[array size _click] == 0} {
1220	Rotate click $x $y
1221	} else {
1222	set w [winfo width $itk_component(view)]
1223	set h [winfo height $itk_component(view)]
1224	if {$w <= 0 \|\| $h <= 0} {
1225	return
1226	}
1227
1228	if {[catch {
1229	# this fails sometimes for no apparent reason
1230	set dx [expr {double($x-$_click(x))/$w}]
1231	set dy [expr {double($y-$_click(y))/$h}]
1232	}]} {
1233	return
1234	}
1235	if { $dx == 0 && $dy == 0 } {
1236	return
1237	}
1238	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1239	EventuallyRotate $q
1240	set _click(x) $x
1241	set _click(y) $y
1242	}
1243	}
1244	"release" {
1245	Rotate drag $x $y
1246	$itk_component(view) configure -cursor ""
1247	catch {unset _click}
1248	}
1249	default {
1250	error "bad option \"$option\": should be click, drag, release"
1251	}
1252	}
1253	}
1254
1255	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1256	foreach tag [CurrentDatasets -visible] {
1257	SendCmd "dataset getscalar pixel $x $y $tag"
1258	}
1259	}
1260
1261	# ----------------------------------------------------------------------
1262	# USAGE: $this Pan click x y
1263	# $this Pan drag x y
1264	# $this Pan release x y
1265	#
1266	# Called automatically when the user clicks on one of the zoom
1267	# controls for this widget. Changes the zoom for the current view.
1268	# ----------------------------------------------------------------------
1269	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1270	switch -- $option {
1271	"set" {
1272	set w [winfo width $itk_component(view)]
1273	set h [winfo height $itk_component(view)]
1274	set x [expr $x / double($w)]
1275	set y [expr $y / double($h)]
1276	set _view(xpan) [expr $_view(xpan) + $x]
1277	set _view(ypan) [expr $_view(ypan) + $y]
1278	PanCamera
1279	return
1280	}
1281	"click" {
1282	set _click(x) $x
1283	set _click(y) $y
1284	$itk_component(view) configure -cursor hand1
1285	}
1286	"drag" {
1287	if { ![info exists _click(x)] } {
1288	set _click(x) $x
1289	}
1290	if { ![info exists _click(y)] } {
1291	set _click(y) $y
1292	}
1293	set w [winfo width $itk_component(view)]
1294	set h [winfo height $itk_component(view)]
1295	set dx [expr ($_click(x) - $x)/double($w)]
1296	set dy [expr ($_click(y) - $y)/double($h)]
1297	set _click(x) $x
1298	set _click(y) $y
1299	set _view(xpan) [expr $_view(xpan) - $dx]
1300	set _view(ypan) [expr $_view(ypan) - $dy]
1301	PanCamera
1302	}
1303	"release" {
1304	Pan drag $x $y
1305	$itk_component(view) configure -cursor ""
1306	}
1307	default {
1308	error "unknown option \"$option\": should set, click, drag, or release"
1309	}
1310	}
1311	}
1312
1313	# ----------------------------------------------------------------------
1314	# USAGE: InitSettings <what> ?<value>?
1315	#
1316	# Used internally to update rendering settings whenever parameters
1317	# change in the popup settings panel. Sends the new settings off
1318	# to the back end.
1319	# ----------------------------------------------------------------------
1320	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1321	foreach spec $args {
1322	if { [info exists _settings($_first-$spec)] } {
1323	# Reset global setting with dataobj specific setting
1324	set _settings($spec) $_settings($_first-$spec)
1325	}
1326	AdjustSetting $spec
1327	}
1328	}
1329
1330	#
1331	# AdjustSetting --
1332	#
1333	# Changes/updates a specific setting in the widget. There are
1334	# usually user-setable option. Commands are sent to the render
1335	# server.
1336	#
1337	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1338	if { $_beforeConnect } {
1339	return
1340	}
1341	switch -- $what {
1342	"axisFlymode" {
1343	set mode [$itk_component(axisflymode) value]
1344	set mode [$itk_component(axisflymode) translate $mode]
1345	set _settings($what) $mode
1346	SendCmd "axis flymode $mode"
1347	}
1348	"axisLabels" {
1349	set bool $_settings(axisLabels)
1350	SendCmd "axis labels all $bool"
1351	}
1352	"axisMinorTicks" {
1353	set bool $_settings(axisMinorTicks)
1354	foreach axis { x y z } {
1355	SendCmd "axis minticks ${axis} $bool"
1356	}
1357	}
1358	"axisVisible" {
1359	set bool $_settings(axisVisible)
1360	SendCmd "axis visible all $bool"
1361	}
1362	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1363	set axis [string tolower [string range $what 4 4]]
1364	set bool $_settings($what)
1365	SendCmd "axis grid $axis $bool"
1366	}
1367	"background" {
1368	set bg [$itk_component(background) value]
1369	array set fgcolors {
1370	"black" "white"
1371	"white" "black"
1372	"grey" "black"
1373	}
1374	set fg $fgcolors($bg)
1375	configure -plotbackground $bg -plotforeground $fg
1376	$itk_component(view) delete "legend"
1377	SendCmd "screen bgcolor [Color2RGB $bg]"
1378	SendCmd "outline color [Color2RGB $fg]"
1379	SendCmd "axis color all [Color2RGB $fg]"
1380	DrawLegend
1381	}
1382	"colormap" {
1383	set _changed(colormap) 1
1384	StartBufferingCommands
1385	set color [$itk_component(colormap) value]
1386	set _settings(colormap) $color
1387	if { $color == "none" } {
1388	if { $_settings(colormapVisible) } {
1389	SendCmd "heightmap surface 0"
1390	set _settings(colormapVisible) 0
1391	}
1392	} else {
1393	if { !$_settings(colormapVisible) } {
1394	SendCmd "heightmap surface 1"
1395	set _settings(colormapVisible) 1
1396	}
1397	SetCurrentColormap $color
1398	if {$_settings(colormapDiscrete)} {
1399	set numColors [expr $_settings(numIsolines) + 1]
1400	SendCmd "colormap res $numColors $color"
1401	}
1402	}
1403	StopBufferingCommands
1404	EventuallyRequestLegend
1405	}
1406	"colormapVisible" {
1407	set bool $_settings($what)
1408	SendCmd "heightmap surface $bool"
1409	}
1410	"colormapDiscrete" {
1411	set bool $_settings($what)
1412	set numColors [expr $_settings(numIsolines) + 1]
1413	StartBufferingCommands
1414	if {$bool} {
1415	SendCmd "colormap res $numColors"
1416	# Discrete colormap requires preinterp on
1417	SendCmd "heightmap preinterp on"
1418	} else {
1419	SendCmd "colormap res default"
1420	# FIXME: add setting for preinterp (default on)
1421	SendCmd "heightmap preinterp on"
1422	}
1423	StopBufferingCommands
1424	EventuallyRequestLegend
1425	}
1426	"edges" {
1427	set bool $_settings(edges)
1428	SendCmd "heightmap edges $bool"
1429	}
1430	"field" {
1431	set label [$itk_component(field) value]
1432	set fname [$itk_component(field) translate $label]
1433	set _settings(field) $fname
1434	if { [info exists _fields($fname)] } {
1435	foreach { label units components } $_fields($fname) break
1436	if { $components > 1 } {
1437	set _colorMode vmag
1438	} else {
1439	set _colorMode scalar
1440	}
1441	set _curFldName $fname
1442	set _curFldLabel $label
1443	} else {
1444	puts stderr "unknown field \"$fname\""
1445	return
1446	}
1447	set label [$_first hints label]
1448	if { $label == "" } {
1449	if { [string match "component*" $_curFldName] } {
1450	set label Z
1451	} else {
1452	set label $_curFldLabel
1453	}
1454	}
1455	# May be a space in the axis label.
1456	SendCmd [list axis name z $label]
1457
1458	if { [$_first hints zunits] == "" } {
1459	set units [lindex $_fields($_curFldName) 1]
1460	} else {
1461	set units [$_first hints zunits]
1462	}
1463	if { $units != "" } {
1464	# May be a space in the axis units.
1465	SendCmd [list axis units z $units]
1466	}
1467	# Get the new limits because the field changed.
1468	ResetAxes
1469	SendCmd "dataset scalar $_curFldName"
1470	SendCmd "heightmap colormode scalar $_curFldName"
1471	SendCmd "camera reset"
1472	UpdateContourList
1473	DrawLegend
1474	}
1475	"heightmapScale" {
1476	if { $_settings(isHeightmap) } {
1477	set scale [GetHeightmapScale]
1478	# Have to set the datasets individually because we are
1479	# tracking them in _comp2scale.
1480	foreach dataset [CurrentDatasets -all] {
1481	SendCmd "heightmap heightscale $scale $dataset"
1482	set _comp2scale($dataset) $scale
1483	}
1484	ResetAxes
1485	}
1486	}
1487	"isHeightmap" {
1488	set bool $_settings(isHeightmap)
1489	set c $itk_component(view)
1490	StartBufferingCommands
1491	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1492	if { $bool } {
1493	set _settings(heightmapScale) 50
1494	set _settings(opacity) $_settings(saveOpacity)
1495	set _settings(lighting) $_settings(saveLighting)
1496	set _settings(outline) 0
1497	} else {
1498	set _settings(heightmapScale) 0
1499	set _settings(lighting) 0
1500	set _settings(opacity) 100
1501	set _settings(outline) $_settings(saveOutline)
1502	}
1503	AdjustSetting lighting
1504	AdjustSetting opacity
1505	AdjustSetting outline
1506	set scale [GetHeightmapScale]
1507	# Have to set the datasets individually because we are
1508	# tracking them in _comp2scale.
1509	foreach dataset [CurrentDatasets -all] {
1510	SendCmd "heightmap heightscale $scale $dataset"
1511	set _comp2scale($dataset) $scale
1512	}
1513	if { $bool } {
1514	$itk_component(lighting) configure -state normal
1515	$itk_component(opacity) configure -state normal
1516	$itk_component(scale) configure -state normal
1517	$itk_component(opacity_l) configure -state normal
1518	$itk_component(scale_l) configure -state normal
1519	$itk_component(outline) configure -state disabled
1520	if {$_view(ortho)} {
1521	SendCmd "camera mode ortho"
1522	} else {
1523	SendCmd "camera mode persp"
1524	}
1525	} else {
1526	$itk_component(lighting) configure -state disabled
1527	$itk_component(opacity) configure -state disabled
1528	$itk_component(scale) configure -state disabled
1529	$itk_component(opacity_l) configure -state disabled
1530	$itk_component(scale_l) configure -state disabled
1531	$itk_component(outline) configure -state normal
1532	SendCmd "camera mode image"
1533	}
1534	if {$_settings(stretchToFit)} {
1535	if {$scale == 0} {
1536	SendCmd "camera aspect window"
1537	} else {
1538	SendCmd "camera aspect square"
1539	}
1540	}
1541	ResetAxes
1542	if { $bool } {
1543	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1544	$_arcball quaternion $q
1545	SendCmd "camera orient $q"
1546	} else {
1547	bind $c <ButtonPress-1> {}
1548	bind $c <B1-Motion> {}
1549	bind $c <ButtonRelease-1> {}
1550	}
1551	SendCmd "camera reset"
1552	# Fix the mouse bindings for rotation/panning and the
1553	# camera mode. Ideally we'd create a bindtag for these.
1554	if { $bool } {
1555	# Bindings for rotation via mouse
1556	bind $c <ButtonPress-1> \
1557	[itcl::code $this Rotate click %x %y]
1558	bind $c <B1-Motion> \
1559	[itcl::code $this Rotate drag %x %y]
1560	bind $c <ButtonRelease-1> \
1561	[itcl::code $this Rotate release %x %y]
1562	}
1563	StopBufferingCommands
1564	}
1565	"isolineColor" {
1566	set color [$itk_component(isolinecolor) value]
1567	if { $color == "none" } {
1568	if { $_settings(isolinesVisible) } {
1569	SendCmd "heightmap isolines 0"
1570	set _settings(isolinesVisible) 0
1571	}
1572	} else {
1573	if { !$_settings(isolinesVisible) } {
1574	SendCmd "heightmap isolines 1"
1575	set _settings(isolinesVisible) 1
1576	}
1577	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1578	}
1579	DrawLegend
1580	}
1581	"isolinesVisible" {
1582	set bool $_settings($what)
1583	SendCmd "heightmap isolines $bool"
1584	DrawLegend
1585	}
1586	"legendVisible" {
1587	if { !$_settings($what) } {
1588	$itk_component(view) delete legend
1589	}
1590	DrawLegend
1591	}
1592	"lighting" {
1593	if { $_settings(isHeightmap) } {
1594	set _settings(saveLighting) $_settings(lighting)
1595	set bool $_settings($what)
1596	SendCmd "heightmap lighting $bool"
1597	} else {
1598	SendCmd "heightmap lighting 0"
1599	}
1600	}
1601	"numIsolines" {
1602	set _settings(numIsolines) [$itk_component(numisolines) value]
1603	set _currentNumIsolines $_settings(numIsolines)
1604	UpdateContourList
1605	set _changed(numIsolines) 1
1606	SendCmd "heightmap contourlist [list $_contourList]"
1607	if {$_settings(colormapDiscrete)} {
1608	set numColors [expr $_settings(numIsolines) + 1]
1609	SendCmd "colormap res $numColors"
1610	EventuallyRequestLegend
1611	} else {
1612	DrawLegend
1613	}
1614	}
1615	"opacity" {
1616	set _changed(opacity) 1
1617	if { $_settings(isHeightmap) } {
1618	set _settings(saveOpacity) $_settings(opacity)
1619	set val $_settings(opacity)
1620	set sval [expr { 0.01 * double($val) }]
1621	SendCmd "heightmap opacity $sval"
1622	} else {
1623	SendCmd "heightmap opacity 1"
1624	}
1625	}
1626	"outline" {
1627	if { $_settings(isHeightmap) } {
1628	SendCmd "outline visible 0"
1629	} else {
1630	set _settings(saveOutline) $_settings(outline)
1631	set bool $_settings(outline)
1632	SendCmd "outline visible $bool"
1633	}
1634	}
1635	"stretchToFit" {
1636	set bool $_settings($what)
1637	if { $bool } {
1638	set heightScale [GetHeightmapScale]
1639	if {$heightScale == 0} {
1640	SendCmd "camera aspect window"
1641	} else {
1642	SendCmd "camera aspect square"
1643	}
1644	} else {
1645	SendCmd "camera aspect native"
1646	}
1647	}
1648	"wireframe" {
1649	set bool $_settings($what)
1650	SendCmd "heightmap wireframe $bool"
1651	}
1652	default {
1653	error "don't know how to fix $what"
1654	}
1655	}
1656	}
1657
1658	#
1659	# RequestLegend --
1660	#
1661	# Request a new legend from the server. The size of the legend
1662	# is determined from the height of the canvas.
1663	#
1664	# This should be called when
1665	# 1. A new current colormap is set.
1666	# 2. Window is resized.
1667	# 3. The limits of the data have changed. (Just need a redraw).
1668	# 4. Number of isolines have changed. (Just need a redraw).
1669	# 5. Legend becomes visible (Just need a redraw).
1670	#
1671	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1672	set _legendPending 0
1673	set font "Arial 8"
1674	set w 12
1675	set lineht [font metrics $font -linespace]
1676	# color ramp height = (canvas height) - (min and max value lines) - 2
1677	set h [expr {$_height - 2 * ($lineht + 2)}]
1678	set _legendHeight $h
1679
1680	set fname $_curFldName
1681	if { [string match "component*" $fname] } {
1682	set title ""
1683	} else {
1684	if { [info exists _fields($fname)] } {
1685	foreach { title units } $_fields($fname) break
1686	if { $units != "" } {
1687	set title [format "%s (%s)" $title $units]
1688	}
1689	} else {
1690	set title $fname
1691	}
1692	}
1693	# If there's a title too, substract one more line
1694	if { $title != "" } {
1695	incr h -$lineht
1696	}
1697	if { $h < 1 } {
1698	return
1699	}
1700	# Set the legend on the first heightmap dataset.
1701	if { $_currentColormap != "" } {
1702	set cmap $_currentColormap
1703	SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1704	}
1705	}
1706
1707	#
1708	# ResetAxes --
1709	#
1710	# Set axis z bounds and range
1711	#
1712	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1713	if { ![info exists _limits($_curFldName)]} {
1714	SendCmd "dataset maprange all"
1715	SendCmd "axis autorange z on"
1716	SendCmd "axis autobounds z on"
1717	return
1718	}
1719	foreach { xmin xmax } $_limits(x) break
1720	foreach { ymin ymax } $_limits(y) break
1721	foreach { vmin vmax } $_limits($_curFldName) break
1722
1723	global tcl_precision
1724	set tcl_precision 17
1725	set xr [expr $xmax - $xmin]
1726	set yr [expr $ymax - $ymin]
1727	set vr [expr $vmax - $vmin]
1728	set r [expr ($yr > $xr) ? $yr : $xr]
1729	if { $vr < 1.0e-17 } {
1730	set dataScale 1.0
1731	} else {
1732	set dataScale [expr $r / $vr]
1733	}
1734	set heightScale [GetHeightmapScale]
1735	set bmin [expr $heightScale * $dataScale * $vmin]
1736	set bmax [expr $heightScale * $dataScale * $vmax]
1737	if {$heightScale > 0} {
1738	set zpos [expr - $bmin]
1739	SendCmd "heightmap pos 0 0 $zpos"
1740	} else {
1741	SendCmd "heightmap pos 0 0 0"
1742	}
1743	set bmax [expr $bmax - $bmin]
1744	set bmin 0
1745	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1746	SendCmd "axis bounds z $bmin $bmax"
1747	SendCmd "axis range z $_limits($_curFldName)"
1748	}
1749
1750	#
1751	# SetCurrentColormap --
1752	#
1753	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1754	# Keep track of the colormaps that we build.
1755	if { ![info exists _colormaps($name)] } {
1756	BuildColormap $name
1757	set _colormaps($name) 1
1758	}
1759	set _currentColormap $name
1760	SendCmd "heightmap colormap $_currentColormap"
1761	}
1762
1763
1764	#
1765	# BuildColormap --
1766	#
1767	# Build the designated colormap on the server.
1768	#
1769	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1770	set cmap [ColorsToColormap $name]
1771	if { [llength $cmap] == 0 } {
1772	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1773	}
1774	set wmap "0.0 1.0 1.0 1.0"
1775	SendCmd "colormap add $name { $cmap } { $wmap }"
1776	}
1777
1778	# ----------------------------------------------------------------------
1779	# CONFIGURATION OPTION: -mode
1780	# ----------------------------------------------------------------------
1781	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1782	switch -- $itk_option(-mode) {
1783	"heightmap" {
1784	set _settings(isHeightmap) 1
1785	}
1786	"contour" {
1787	set _settings(isHeightmap) 0
1788	}
1789	default {
1790	error "unknown mode settings \"$itk_option(-mode)\""
1791	}
1792	}
1793	if { !$_reset } {
1794	AdjustSetting isHeightmap
1795	}
1796	}
1797
1798	# ----------------------------------------------------------------------
1799	# CONFIGURATION OPTION: -plotbackground
1800	# ----------------------------------------------------------------------
1801	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1802	if { [isconnected] } {
1803	set rgb [Color2RGB $itk_option(-plotbackground)]
1804	if { !$_reset } {
1805	SendCmd "screen bgcolor $rgb"
1806	}
1807	$itk_component(view) configure -background $itk_option(-plotbackground)
1808	}
1809	}
1810
1811	# ----------------------------------------------------------------------
1812	# CONFIGURATION OPTION: -plotforeground
1813	# ----------------------------------------------------------------------
1814	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1815	if { [isconnected] } {
1816	set rgb [Color2RGB $itk_option(-plotforeground)]
1817	if { !$_reset } {
1818	SendCmd "outline color $rgb"
1819	SendCmd "axis color all $rgb"
1820	}
1821	}
1822	}
1823
1824	itcl::body Rappture::VtkHeightmapViewer::limits3 { dataobj } {
1825	lappend limits x [$dataobj limits x]
1826	lappend limits y [$dataobj limits y]
1827	if { [catch { $dataobj limits $_curFldName } vlim] != 0 } {
1828	set vlim [$dataobj limits v]
1829	}
1830	lappend limits v $vlim
1831	return $limits
1832	}
1833
1834	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1835
1836	set fg [option get $itk_component(hull) font Font]
1837	#set bfg [option get $itk_component(hull) boldFont Font]
1838
1839	set inner [$itk_component(main) insert end \
1840	-title "Contour/Surface Settings" \
1841	-icon [Rappture::icon contour2]]
1842	$inner configure -borderwidth 4
1843
1844	checkbutton $inner.legend \
1845	-text "Legend" \
1846	-variable [itcl::scope _settings(legendVisible)] \
1847	-command [itcl::code $this AdjustSetting legendVisible] \
1848	-font "Arial 9"
1849
1850	checkbutton $inner.wireframe \
1851	-text "Wireframe" \
1852	-variable [itcl::scope _settings(wireframe)] \
1853	-command [itcl::code $this AdjustSetting wireframe] \
1854	-font "Arial 9"
1855
1856	itk_component add lighting {
1857	checkbutton $inner.lighting \
1858	-text "Enable Lighting" \
1859	-variable [itcl::scope _settings(lighting)] \
1860	-command [itcl::code $this AdjustSetting lighting] \
1861	-font "Arial 9"
1862	} {
1863	ignore -font
1864	}
1865	checkbutton $inner.edges \
1866	-text "Edges" \
1867	-variable [itcl::scope _settings(edges)] \
1868	-command [itcl::code $this AdjustSetting edges] \
1869	-font "Arial 9"
1870
1871	itk_component add outline {
1872	checkbutton $inner.outline \
1873	-text "Outline" \
1874	-variable [itcl::scope _settings(outline)] \
1875	-command [itcl::code $this AdjustSetting outline] \
1876	-font "Arial 9"
1877	} {
1878	ignore -font
1879	}
1880	checkbutton $inner.stretch \
1881	-text "Stretch to fit" \
1882	-variable [itcl::scope _settings(stretchToFit)] \
1883	-command [itcl::code $this AdjustSetting stretchToFit] \
1884	-font "Arial 9"
1885
1886	checkbutton $inner.isolines \
1887	-text "Isolines" \
1888	-variable [itcl::scope _settings(isolinesVisible)] \
1889	-command [itcl::code $this AdjustSetting isolinesVisible] \
1890	-font "Arial 9"
1891
1892	checkbutton $inner.colormapDiscrete \
1893	-text "Discrete Colormap" \
1894	-variable [itcl::scope _settings(colormapDiscrete)] \
1895	-command [itcl::code $this AdjustSetting colormapDiscrete] \
1896	-font "Arial 9"
1897
1898	itk_component add field_l {
1899	label $inner.field_l -text "Field" -font "Arial 9"
1900	} {
1901	ignore -font
1902	}
1903	itk_component add field {
1904	Rappture::Combobox $inner.field -width 10 -editable no
1905	}
1906	bind $inner.field <<Value>> \
1907	[itcl::code $this AdjustSetting field]
1908
1909	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1910	itk_component add colormap {
1911	Rappture::Combobox $inner.colormap -width 10 -editable no
1912	}
1913	$inner.colormap choices insert end \
1914	"BCGYR" "BCGYR" \
1915	"BGYOR" "BGYOR" \
1916	"blue" "blue" \
1917	"blue-to-brown" "blue-to-brown" \
1918	"blue-to-orange" "blue-to-orange" \
1919	"blue-to-grey" "blue-to-grey" \
1920	"green-to-magenta" "green-to-magenta" \
1921	"greyscale" "greyscale" \
1922	"nanohub" "nanohub" \
1923	"rainbow" "rainbow" \
1924	"spectral" "spectral" \
1925	"ROYGB" "ROYGB" \
1926	"RYGCB" "RYGCB" \
1927	"brown-to-blue" "brown-to-blue" \
1928	"grey-to-blue" "grey-to-blue" \
1929	"orange-to-blue" "orange-to-blue" \
1930	"none" "none"
1931
1932	$itk_component(colormap) value "BCGYR"
1933	bind $inner.colormap <<Value>> \
1934	[itcl::code $this AdjustSetting colormap]
1935
1936	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1937	itk_component add isolinecolor {
1938	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1939	}
1940	$inner.isolinecolor choices insert end \
1941	"black" "black" \
1942	"blue" "blue" \
1943	"cyan" "cyan" \
1944	"green" "green" \
1945	"grey" "grey" \
1946	"magenta" "magenta" \
1947	"orange" "orange" \
1948	"red" "red" \
1949	"white" "white" \
1950	"none" "none"
1951
1952	$itk_component(isolinecolor) value "black"
1953	bind $inner.isolinecolor <<Value>> \
1954	[itcl::code $this AdjustSetting isolineColor]
1955
1956	label $inner.background_l -text "Background Color" -font "Arial 9"
1957	itk_component add background {
1958	Rappture::Combobox $inner.background -width 10 -editable no
1959	}
1960	$inner.background choices insert end \
1961	"black" "black" \
1962	"white" "white" \
1963	"grey" "grey"
1964
1965	$itk_component(background) value "white"
1966	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1967
1968	itk_component add opacity_l {
1969	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1970	} {
1971	ignore -font
1972	}
1973	itk_component add opacity {
1974	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1975	-variable [itcl::scope _settings(opacity)] \
1976	-showvalue off \
1977	-command [itcl::code $this AdjustSetting opacity]
1978	}
1979	itk_component add scale_l {
1980	label $inner.scale_l -text "Scale" -font "Arial 9"
1981	} {
1982	ignore -font
1983	}
1984	itk_component add scale {
1985	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1986	-variable [itcl::scope _settings(heightmapScale)] \
1987	-showvalue off \
1988	-command [itcl::code $this AdjustSetting heightmapScale]
1989	}
1990	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1991	itk_component add numisolines {
1992	Rappture::Spinint $inner.numisolines \
1993	-min 1 -max 50 -font "arial 9"
1994	}
1995	$itk_component(numisolines) value $_settings(numIsolines)
1996	bind $itk_component(numisolines) <<Value>> \
1997	[itcl::code $this AdjustSetting numIsolines]
1998
1999	frame $inner.separator1 -height 2 -relief sunken -bd 1
2000	frame $inner.separator2 -height 2 -relief sunken -bd 1
2001
2002	blt::table $inner \
2003	0,0 $inner.field_l -anchor w -pady 2 \
2004	0,1 $inner.field -anchor w -pady 2 -fill x \
2005	1,0 $inner.colormap_l -anchor w -pady 2 \
2006	1,1 $inner.colormap -anchor w -pady 2 -fill x \
2007	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
2008	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
2009	3,0 $inner.background_l -anchor w -pady 2 \
2010	3,1 $inner.background -anchor w -pady 2 -fill x \
2011	4,0 $inner.numisolines_l -anchor w -pady 2 \
2012	4,1 $inner.numisolines -anchor w -pady 2 \
2013	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
2014	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
2015	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
2016	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
2017	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
2018	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
2019	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
2020	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
2021	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
2022	14,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
2023	15,0 $inner.opacity_l -anchor w -pady 2 \
2024	15,1 $inner.opacity -fill x -pady 2 \
2025	16,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
2026	16,1 $inner.scale -fill x -pady 2 -cspan 2 \
2027
2028	blt::table configure $inner r* c* -resize none
2029	blt::table configure $inner r17 c1 -resize expand
2030	}
2031
2032	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
2033
2034	set fg [option get $itk_component(hull) font Font]
2035	#set bfg [option get $itk_component(hull) boldFont Font]
2036
2037	set inner [$itk_component(main) insert end \
2038	-title "Axis Settings" \
2039	-icon [Rappture::icon axis2]]
2040	$inner configure -borderwidth 4
2041
2042	checkbutton $inner.visible \
2043	-text "Axes" \
2044	-variable [itcl::scope _settings(axisVisible)] \
2045	-command [itcl::code $this AdjustSetting axisVisible] \
2046	-font "Arial 9"
2047	checkbutton $inner.labels \
2048	-text "Axis Labels" \
2049	-variable [itcl::scope _settings(axisLabels)] \
2050	-command [itcl::code $this AdjustSetting axisLabels] \
2051	-font "Arial 9"
2052	label $inner.grid_l -text "Grid" -font "Arial 9"
2053	checkbutton $inner.xgrid \
2054	-text "X" \
2055	-variable [itcl::scope _settings(axisXGrid)] \
2056	-command [itcl::code $this AdjustSetting axisXGrid] \
2057	-font "Arial 9"
2058	checkbutton $inner.ygrid \
2059	-text "Y" \
2060	-variable [itcl::scope _settings(axisYGrid)] \
2061	-command [itcl::code $this AdjustSetting axisYGrid] \
2062	-font "Arial 9"
2063	checkbutton $inner.zgrid \
2064	-text "Z" \
2065	-variable [itcl::scope _settings(axisZGrid)] \
2066	-command [itcl::code $this AdjustSetting axisZGrid] \
2067	-font "Arial 9"
2068	checkbutton $inner.minorticks \
2069	-text "Minor Ticks" \
2070	-variable [itcl::scope _settings(axisMinorTicks)] \
2071	-command [itcl::code $this AdjustSetting axisMinorTicks] \
2072	-font "Arial 9"
2073
2074
2075	label $inner.mode_l -text "Mode" -font "Arial 9"
2076
2077	itk_component add axisflymode {
2078	Rappture::Combobox $inner.mode -width 10 -editable no
2079	}
2080	$inner.mode choices insert end \
2081	"static_triad" "static" \
2082	"closest_triad" "closest" \
2083	"furthest_triad" "farthest" \
2084	"outer_edges" "outer"
2085	$itk_component(axisflymode) value "static"
2086	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlymode]
2087
2088	blt::table $inner \
2089	0,0 $inner.visible -anchor w -cspan 4 \
2090	1,0 $inner.labels -anchor w -cspan 4 \
2091	2,0 $inner.minorticks -anchor w -cspan 4 \
2092	4,0 $inner.grid_l -anchor w \
2093	4,1 $inner.xgrid -anchor w \
2094	4,2 $inner.ygrid -anchor w \
2095	4,3 $inner.zgrid -anchor w \
2096	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2097	5,1 $inner.mode -fill x -cspan 3
2098
2099	blt::table configure $inner r* c* -resize none
2100	blt::table configure $inner r7 c6 -resize expand
2101	blt::table configure $inner r3 -height 0.125i
2102	}
2103
2104
2105	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2106	set inner [$itk_component(main) insert end \
2107	-title "Camera Settings" \
2108	-icon [Rappture::icon camera]]
2109	$inner configure -borderwidth 4
2110
2111	label $inner.view_l -text "view" -font "Arial 9"
2112	set f [frame $inner.view]
2113	foreach side { front back left right top bottom } {
2114	button $f.$side -image [Rappture::icon view$side] \
2115	-command [itcl::code $this SetOrientation $side]
2116	Rappture::Tooltip::for $f.$side "Change the view to $side"
2117	pack $f.$side -side left
2118	}
2119
2120	blt::table $inner \
2121	0,0 $inner.view_l -anchor e -pady 2 \
2122	0,1 $inner.view -anchor w -pady 2
2123
2124	set labels { qx qy qz qw xpan ypan zoom }
2125	set row 1
2126	foreach tag $labels {
2127	label $inner.${tag}label -text $tag -font "Arial 9"
2128	entry $inner.${tag} -font "Arial 9" -bg white \
2129	-textvariable [itcl::scope _view($tag)]
2130	bind $inner.${tag} <Return> \
2131	[itcl::code $this camera set ${tag}]
2132	bind $inner.${tag} <KP_Enter> \
2133	[itcl::code $this camera set ${tag}]
2134	blt::table $inner \
2135	$row,0 $inner.${tag}label -anchor e -pady 2 \
2136	$row,1 $inner.${tag} -anchor w -pady 2
2137	blt::table configure $inner r$row -resize none
2138	incr row
2139	}
2140	checkbutton $inner.ortho \
2141	-text "Orthographic Projection" \
2142	-variable [itcl::scope _view(ortho)] \
2143	-command [itcl::code $this camera set ortho] \
2144	-font "Arial 9"
2145	blt::table $inner \
2146	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2147	blt::table configure $inner r$row -resize none
2148	incr row
2149
2150	blt::table configure $inner c* r* -resize none
2151	blt::table configure $inner c2 -resize expand
2152	blt::table configure $inner r$row -resize expand
2153	}
2154
2155	#
2156	# camera --
2157	#
2158	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2159	switch -- $option {
2160	"show" {
2161	puts [array get _view]
2162	}
2163	"set" {
2164	set who [lindex $args 0]
2165	set x $_view($who)
2166	set code [catch { string is double $x } result]
2167	if { $code != 0 \|\| !$result } {
2168	return
2169	}
2170	switch -- $who {
2171	"ortho" {
2172	if {$_view(ortho)} {
2173	SendCmd "camera mode ortho"
2174	} else {
2175	SendCmd "camera mode persp"
2176	}
2177	}
2178	"xpan" - "ypan" {
2179	PanCamera
2180	}
2181	"qx" - "qy" - "qz" - "qw" {
2182	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2183	$_arcball quaternion $q
2184	EventuallyRotate $q
2185	}
2186	"zoom" {
2187	SendCmd "camera zoom $_view(zoom)"
2188	}
2189	}
2190	}
2191	}
2192	}
2193
2194	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2195	set bytes ""
2196	foreach dataobj [get] {
2197	foreach comp [$dataobj components] {
2198	set tag $dataobj-$comp
2199	set contents [$dataobj vtkdata $comp]
2200	append bytes "$contents\n"
2201	}
2202	}
2203	return [list .vtk $bytes]
2204	}
2205
2206	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2207	if { [image width $_image(download)] > 0 &&
2208	[image height $_image(download)] > 0 } {
2209	set bytes [$_image(download) data -format "jpeg -quality 100"]
2210	set bytes [Rappture::encoding::decode -as b64 $bytes]
2211	return [list .jpg $bytes]
2212	}
2213	return ""
2214	}
2215
2216	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2217	Rappture::Balloon $popup \
2218	-title "[Rappture::filexfer::label downloadWord] as..."
2219	set inner [$popup component inner]
2220	label $inner.summary -text "" -anchor w
2221	radiobutton $inner.vtk_button -text "VTK data file" \
2222	-variable [itcl::scope _downloadPopup(format)] \
2223	-font "Arial 9 " \
2224	-value vtk
2225	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2226	radiobutton $inner.image_button -text "Image File" \
2227	-variable [itcl::scope _downloadPopup(format)] \
2228	-font "Arial 9 " \
2229	-value image
2230	Rappture::Tooltip::for $inner.image_button \
2231	"Save as digital image."
2232
2233	button $inner.ok -text "Save" \
2234	-highlightthickness 0 -pady 2 -padx 3 \
2235	-command $command \
2236	-compound left \
2237	-image [Rappture::icon download]
2238
2239	button $inner.cancel -text "Cancel" \
2240	-highlightthickness 0 -pady 2 -padx 3 \
2241	-command [list $popup deactivate] \
2242	-compound left \
2243	-image [Rappture::icon cancel]
2244
2245	blt::table $inner \
2246	0,0 $inner.summary -cspan 2 \
2247	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2248	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2249	4,1 $inner.cancel -width .9i -fill y \
2250	4,0 $inner.ok -padx 2 -width .9i -fill y
2251	blt::table configure $inner r3 -height 4
2252	blt::table configure $inner r4 -pady 4
2253	raise $inner.image_button
2254	$inner.vtk_button invoke
2255	return $inner
2256	}
2257
2258	#
2259	# SetObjectStyle --
2260	#
2261	# Set the style of the heightmap/contour object. This gets calls
2262	# for each dataset once as it is loaded. It can overridden by
2263	# the user controls.
2264	#
2265	#
2266	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2267	# Parse style string.
2268	set tag $dataobj-$comp
2269	array set style {
2270	-color BCGYR
2271	-opacity 100
2272	-levels 10
2273	}
2274	set stylelist [$dataobj style $comp]
2275	if { $stylelist != "" } {
2276	array set style $stylelist
2277	}
2278	# This is too complicated. We want to set the colormap, number of
2279	# isolines and opacity for the dataset. They can be the default values,
2280	# the style hints loaded with the dataset, or set by user controls. As
2281	# datasets get loaded, they first use the defaults that are overidden
2282	# by the style hints. If the user changes the global controls, then that
2283	# overrides everything else. I don't know what it means when global
2284	# controls are specified as style hints by each dataset. It complicates
2285	# the code to handle aberrant cases.
2286
2287	if { $_changed(opacity) } {
2288	set style(-opacity) $_settings(opacity)
2289	}
2290	if { $_changed(numIsolines) } {
2291	set style(-levels) $_settings(numIsolines)
2292	}
2293	if { $_changed(colormap) } {
2294	set style(-color) $_settings(colormap)
2295	}
2296	if { $_currentColormap == "" } {
2297	$itk_component(colormap) value $style(-color)
2298	}
2299	if { [info exists style(-stretchtofit)] } {
2300	set _settings(stretchToFit) $style(-stretchtofit)
2301	AdjustSetting stretchToFit
2302	}
2303	set _currentOpacity $style(-opacity)
2304	if { $_currentNumIsolines != $style(-levels) } {
2305	set _currentNumIsolines $style(-levels)
2306	set _settings(numIsolines) $_currentNumIsolines
2307	$itk_component(numisolines) value $_currentNumIsolines
2308	UpdateContourList
2309	DrawLegend
2310	}
2311	SendCmd "outline add $tag"
2312	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2313	SendCmd "outline visible $_settings(outline) $tag"
2314	set scale [GetHeightmapScale]
2315	SendCmd "[list heightmap add contourlist $_contourList $scale $tag]"
2316	set _comp2scale($tag) $_settings(heightmapScale)
2317	SendCmd "heightmap edges $_settings(edges) $tag"
2318	SendCmd "heightmap wireframe $_settings(wireframe) $tag"
2319	SetCurrentColormap $style(-color)
2320	set color [$itk_component(isolinecolor) value]
2321	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2322	SendCmd "heightmap lighting $_settings(isHeightmap) $tag"
2323	}
2324
2325	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2326	if {[catch {$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	$c create text $x $y \
2393	-anchor ne \
2394	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2395	-font $font
2396	incr y $lineht
2397	$c create image $x $y \
2398	-anchor ne \
2399	-image $_image(legend) -tags "colormap legend"
2400	$c create rectangle $x $y 1 1 \
2401	-fill "" -outline "" -tags "sensor legend"
2402	$c create text $x [expr {$h-2}] \
2403	-anchor se \
2404	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2405	-font $font
2406	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2407	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2408	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2409	}
2410	$c delete isoline
2411	set x2 $x
2412	set iw [image width $_image(legend)]
2413	set ih [image height $_image(legend)]
2414	set x1 [expr $x2 - ($iw*12)/10]
2415	set color [$itk_component(isolinecolor) value]
2416
2417	# Draw the isolines on the legend.
2418	if { $color != "none" && [info exists _limits($_curFldName)] &&
2419	$_settings(isolinesVisible) && $_currentNumIsolines > 0 } {
2420
2421	foreach { vmin vmax } $_limits($_curFldName) break
2422	set range [expr double($vmax - $vmin)]
2423	if { $range <= 0.0 } {
2424	set range 1.0; # Min is greater or equal to max.
2425	}
2426	set tags "isoline legend"
2427	set offset [expr 2 + $lineht]
2428	if { $title != "" } {
2429	incr offset $lineht
2430	}
2431	foreach value $_contourList {
2432	set norm [expr 1.0 - (($value - $vmin) / $range)]
2433	set y1 [expr int(round(($norm * $ih) + $offset))]
2434	for { set off 0 } { $off < 3 } { incr off } {
2435	set _isolines([expr $y1 + $off]) $value
2436	set _isolines([expr $y1 - $off]) $value
2437	}
2438	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2439	}
2440	}
2441
2442	$c bind title <ButtonPress> [itcl::code $this Combo post]
2443	$c bind title <Enter> [itcl::code $this Combo activate]
2444	$c bind title <Leave> [itcl::code $this Combo deactivate]
2445	# Reset the item coordinates according the current size of the plot.
2446	if { [info exists _limits($_curFldName)] } {
2447	foreach { vmin vmax } $_limits($_curFldName) break
2448	$c itemconfigure vmin -text [format %g $vmin]
2449	$c itemconfigure vmax -text [format %g $vmax]
2450	}
2451	set y 2
2452	# If there's a legend title, move the title to the correct position
2453	if { $title != "" } {
2454	$c itemconfigure title -text $title
2455	$c coords title $x $y
2456	incr y $lineht
2457	}
2458	$c coords vmax $x $y
2459	incr y $lineht
2460	$c coords colormap $x $y
2461	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2462	$c raise sensor
2463	$c coords vmin $x [expr {$h - 2}]
2464	}
2465
2466	#
2467	# EnterLegend --
2468	#
2469	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2470	SetLegendTip $x $y
2471	}
2472
2473	#
2474	# MotionLegend --
2475	#
2476	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2477	Rappture::Tooltip::tooltip cancel
2478	set c $itk_component(view)
2479	set cw [winfo width $c]
2480	set ch [winfo height $c]
2481	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2482	SetLegendTip $x $y
2483	}
2484	}
2485
2486	#
2487	# LeaveLegend --
2488	#
2489	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2490	Rappture::Tooltip::tooltip cancel
2491	.rappturetooltip configure -icon ""
2492	}
2493
2494	#
2495	# SetLegendTip --
2496	#
2497	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2498	set fname $_curFldName
2499	set c $itk_component(view)
2500	set w [winfo width $c]
2501	set h [winfo height $c]
2502	set font "Arial 8"
2503	set lineht [font metrics $font -linespace]
2504
2505	set ih [image height $_image(legend)]
2506	# Subtract off the offset of the color ramp from the top of the canvas
2507	set iy [expr $y - ($lineht + 2)]
2508
2509	if { [string match "component*" $fname] } {
2510	set title ""
2511	} else {
2512	if { [info exists _fields($fname)] } {
2513	foreach { title units } $_fields($fname) break
2514	if { $units != "" } {
2515	set title [format "%s (%s)" $title $units]
2516	}
2517	} else {
2518	set title $fname
2519	}
2520	}
2521	# If there's a legend title, increase the offset by the line height.
2522	if { $title != "" } {
2523	incr iy -$lineht
2524	}
2525
2526	# Make a swatch of the selected color
2527	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2528	return
2529	}
2530
2531	if { ![info exists _image(swatch)] } {
2532	set _image(swatch) [image create photo -width 24 -height 24]
2533	}
2534	set color [eval format "\#%02x%02x%02x" $pixel]
2535	$_image(swatch) put black -to 0 0 23 23
2536	$_image(swatch) put $color -to 1 1 22 22
2537
2538	# Compute the value of the point
2539	if { [info exists _limits($fname)] } {
2540	foreach { vmin vmax } $_limits($fname) break
2541	set t [expr 1.0 - (double($iy) / double($ih-1))]
2542	set value [expr $t * ($vmax - $vmin) + $vmin]
2543	} else {
2544	set value 0.0
2545	}
2546	set tipx [expr $x + 15]
2547	set tipy [expr $y - 5]
2548	.rappturetooltip configure -icon $_image(swatch)
2549	if { [info exists _isolines($y)] } {
2550	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2551	} else {
2552	Rappture::Tooltip::text $c [format "$title %g" $value]
2553	}
2554	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2555	}
2556
2557	# ----------------------------------------------------------------------
2558	# USAGE: _dropdown post
2559	# USAGE: _dropdown unpost
2560	# USAGE: _dropdown select
2561	#
2562	# Used internally to handle the dropdown list for this combobox. The
2563	# post/unpost options are invoked when the list is posted or unposted
2564	# to manage the relief of the controlling button. The select option
2565	# is invoked whenever there is a selection from the list, to assign
2566	# the value back to the gauge.
2567	# ----------------------------------------------------------------------
2568	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2569	set c $itk_component(view)
2570	switch -- $option {
2571	post {
2572	foreach { x1 y1 x2 y2 } [$c bbox title] break
2573	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2574	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2575	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2576	tk_popup $itk_component(fieldmenu) $x $y
2577	}
2578	activate {
2579	$c itemconfigure title -fill red
2580	}
2581	deactivate {
2582	$c itemconfigure title -fill $itk_option(-plotforeground)
2583	}
2584	invoke {
2585	$itk_component(field) value $_curFldLabel
2586	AdjustSetting field
2587	}
2588	default {
2589	error "bad option \"$option\": should be post, unpost, select"
2590	}
2591	}
2592	}
2593
2594	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2595	if { $_settings(isHeightmap) } {
2596	set val $_settings(heightmapScale)
2597	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2598	return $sval
2599	}
2600	set sval 0
2601	}
2602
2603	itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2604	array set positions {
2605	front "0.707107 0.707107 0 0"
2606	back "0 0 0.707107 0.707107"
2607	left "0.5 0.5 -0.5 -0.5"
2608	right "0.5 0.5 0.5 0.5"
2609	top "1 0 0 0"
2610	bottom "0 1 0 0"
2611	}
2612	foreach name { qw qx qy qz } value $positions($side) {
2613	set _view($name) $value
2614	}
2615	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2616	$_arcball quaternion $q
2617	SendCmd "camera orient $q"
2618	SendCmd "camera reset"
2619	set _view(xpan) 0
2620	set _view(ypan) 0
2621	set _view(zoom) 1.0
2622	}
2623
2624	itcl::body Rappture::VtkHeightmapViewer::UpdateContourList {} {
2625	if { ![info exists _limits($_curFldName)] } {
2626	return
2627	}
2628	foreach { vmin vmax } $_limits($_curFldName) break
2629	set v [blt::vector create \#auto]
2630	$v seq $vmin $vmax [expr $_currentNumIsolines+2]
2631	$v delete end 0
2632	set _contourList [$v range 0 end]
2633	blt::vector destroy $v
2634	}

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