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source: branches/1.4/gui/scripts/vtkheightmapviewer.tcl @ 5312

Last change on this file since 5312 was 5206, checked in by ldelgass, 9 years ago
merge r5195 from trunk
File size: 90.3 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkheightmapviewer - Vtk heightmap viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2014 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkHeightmapViewer.width 4i widgetDefault
19	option add VtkHeightmapViewercursor crosshair widgetDefault
20	option add *VtkHeightmapViewer.height 4i widgetDefault
21	option add *VtkHeightmapViewer.foreground black widgetDefault
22	option add *VtkHeightmapViewer.controlBackground gray widgetDefault
23	option add *VtkHeightmapViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkHeightmapViewer.plotBackground black widgetDefault
25	option add *VtkHeightmapViewer.plotForeground white widgetDefault
26	option add *VtkHeightmapViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkHeightmapViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkHeightmapViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkHeightmapViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40	itk_option define -mode mode Mode "contour"
41
42	constructor { hostlist args } {
43	Rappture::VisViewer::constructor $hostlist
44	} {
45	# defined below
46	}
47	destructor {
48	# defined below
49	}
50	public proc SetServerList { namelist } {
51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
52	}
53	public method add {dataobj {settings ""}}
54	public method camera {option args}
55	public method delete {args}
56	public method disconnect {}
57	public method download {option args}
58	public method get {args}
59	public method isconnected {}
60	public method parameters {title args} {
61	# do nothing
62	}
63	public method scale {args}
64
65	# The following methods are only used by this class.
66	private method AdjustSetting {what {value ""}}
67	private method BuildAxisTab {}
68	private method BuildCameraTab {}
69	private method BuildColormap { name }
70	private method BuildContourTab {}
71	private method BuildDownloadPopup { widget command }
72	private method CameraReset {}
73	private method Combo { option }
74	private method Connect {}
75	private method CurrentDatasets {args}
76	private method Disconnect {}
77	private method DoResize {}
78	private method DoRotate {}
79	private method DrawLegend {}
80	private method EnterLegend { x y }
81	private method EventuallyRequestLegend {}
82	private method EventuallyResize { w h }
83	private method EventuallyRotate { q }
84	private method GetHeightmapScale {}
85	private method GetImage { args }
86	private method GetVtkData { args }
87	private method InitSettings { args }
88	private method IsValidObject { dataobj }
89	private method LeaveLegend {}
90	private method MotionLegend { x y }
91	private method Pan {option x y}
92	private method PanCamera {}
93	private method Pick {x y}
94	private method QuaternionToView { q } {
95	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
96	}
97	private method Rebuild {}
98	private method ReceiveDataset { args }
99	private method ReceiveImage { args }
100	private method ReceiveLegend { colormap title min max size }
101	private method RequestLegend {}
102	private method ResetAxes {}
103	private method Rotate {option x y}
104	private method SetCurrentColormap { color }
105	private method SetLegendTip { x y }
106	private method SetObjectStyle { dataobj comp }
107	private method SetOrientation { side }
108	private method UpdateContourList {}
109	private method ViewToQuaternion {} {
110	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
111	}
112	private method Zoom {option}
113
114	private variable _arcball ""
115	private variable _dlist "" ; # list of data objects
116	private variable _obj2ovride ; # maps dataobj => style override
117	private variable _comp2scale; # maps dataset to the heightmap scale.
118	private variable _datasets ; # contains all the dataobj-component
119	; # datasets in the server
120	private variable _colormaps ; # contains all the colormaps
121	; # in the server.
122
123	# The name of the current colormap used. The colormap is global to all
124	# heightmaps displayed.
125	private variable _currentColormap ""
126	private variable _currentNumIsolines -1
127
128	private variable _maxScale 100; # This is the # of times the x-axis
129	# and y-axis ranges can differ before
130	# automatically turning on
131	# -stretchtofit
132
133	private variable _click ; # info used for rotate operations
134	private variable _limits ; # Holds overall limits for all dataobjs
135	# using the viewer.
136	private variable _view ; # view params for 3D view
137	private variable _settings
138	private variable _changed
139	private variable _reset 1; # Connection to server has been reset.
140
141	private variable _first "" ; # This is the topmost dataset.
142	private variable _start 0
143	private variable _isolines
144	private variable _contourList ""
145
146	common _downloadPopup; # download options from popup
147	private common _hardcopy
148	private variable _width 0
149	private variable _height 0
150	private variable _legendWidth 0
151	private variable _legendHeight 0
152	private variable _resizePending 0
153	private variable _rotatePending 0
154	private variable _legendPending 0
155	private variable _fieldNames {}
156	private variable _fields
157	private variable _curFldName ""
158	private variable _curFldLabel ""
159	private variable _colorMode "scalar";# Mode of colormap (vmag or scalar)
160	}
161
162	itk::usual VtkHeightmapViewer {
163	keep -background -foreground -cursor -font
164	keep -plotbackground -plotforeground -mode
165	}
166
167	# ----------------------------------------------------------------------
168	# CONSTRUCTOR
169	# ----------------------------------------------------------------------
170	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
171	set _serverType "vtkvis"
172
173	EnableWaitDialog 900
174	# Rebuild event
175	$_dispatcher register !rebuild
176	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
177
178	# Resize event
179	$_dispatcher register !resize
180	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
181
182	# Rotate event
183	$_dispatcher register !rotate
184	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
185
186	# Legend event
187	$_dispatcher register !legend
188	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
189
190	#
191	# Populate parser with commands handle incoming requests
192	#
193	$_parser alias image [itcl::code $this ReceiveImage]
194	$_parser alias dataset [itcl::code $this ReceiveDataset]
195	$_parser alias legend [itcl::code $this ReceiveLegend]
196
197	# Create image for legend colorbar.
198	set _image(legend) [image create photo]
199
200	# Initialize the view to some default parameters.
201	array set _view {
202	-ortho 0
203	-qw 0.36
204	-qx 0.25
205	-qy 0.50
206	-qz 0.70
207	-xpan 0
208	-ypan 0
209	-zoom 1.0
210	}
211	set _arcball [blt::arcball create 100 100]
212	$_arcball quaternion [ViewToQuaternion]
213
214	array set _settings {
215	-axisflymode "static"
216	-axislabels 1
217	-axisminorticks 1
218	-axisvisible 1
219	-colormap BCGYR
220	-colormapdiscrete 0
221	-colormapvisible 1
222	-edges 0
223	-field "Default"
224	-heightmapscale 50
225	-isheightmap 0
226	-isolinecolor black
227	-isolinesvisible 1
228	-legendvisible 1
229	-lighting 1
230	-numisolines 10
231	-opacity 100
232	-outline 0
233	-savelighting 1
234	-saveopacity 100
235	-saveoutline 0
236	-stretchtofit 0
237	-wireframe 0
238	-xgrid 0
239	-ygrid 0
240	-zgrid 0
241	}
242	array set _changed {
243	-colormap 0
244	-numisolines 0
245	-opacity 0
246	}
247	itk_component add view {
248	canvas $itk_component(plotarea).view \
249	-highlightthickness 0 -borderwidth 0
250	} {
251	usual
252	ignore -highlightthickness -borderwidth -background
253	}
254
255	itk_component add fieldmenu {
256	menu $itk_component(plotarea).menu \
257	-relief flat \
258	-tearoff no
259	} {
260	usual
261	ignore -background -foreground -relief -tearoff
262	}
263	set c $itk_component(view)
264	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
265	bind $c <4> [itcl::code $this Zoom in 0.25]
266	bind $c <5> [itcl::code $this Zoom out 0.25]
267	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
268	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
269	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
270	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
271	bind $c <Enter> "focus %W"
272	bind $c <Control-F1> [itcl::code $this ToggleConsole]
273
274	# Fix the scrollregion in case we go off screen
275	$c configure -scrollregion [$c bbox all]
276
277	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
278	set _map(cwidth) -1
279	set _map(cheight) -1
280	set _map(zoom) 1.0
281	set _map(original) ""
282
283	set f [$itk_component(main) component controls]
284	itk_component add reset {
285	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
286	-highlightthickness 0 \
287	-image [Rappture::icon reset-view] \
288	-command [itcl::code $this CameraReset]
289	} {
290	usual
291	ignore -highlightthickness
292	}
293	pack $itk_component(reset) -side top -padx 2 -pady { 2 0 }
294	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
295
296	itk_component add zoomin {
297	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
298	-highlightthickness 0 \
299	-image [Rappture::icon zoom-in] \
300	-command [itcl::code $this Zoom in]
301	} {
302	usual
303	ignore -highlightthickness
304	}
305	pack $itk_component(zoomin) -side top -padx 2 -pady { 2 0 }
306	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
307
308	itk_component add zoomout {
309	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
310	-highlightthickness 0 \
311	-image [Rappture::icon zoom-out] \
312	-command [itcl::code $this Zoom out]
313	} {
314	usual
315	ignore -highlightthickness
316	}
317	pack $itk_component(zoomout) -side top -padx 2 -pady { 2 0 }
318	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
319
320	itk_component add mode {
321	Rappture::PushButton $f.mode \
322	-onimage [Rappture::icon surface] \
323	-offimage [Rappture::icon surface] \
324	-variable [itcl::scope _settings(-isheightmap)] \
325	-command [itcl::code $this AdjustSetting -isheightmap] \
326	}
327	Rappture::Tooltip::for $itk_component(mode) \
328	"Toggle the surface/contour on/off"
329	pack $itk_component(mode) -padx 2 -pady { 2 0 }
330
331	itk_component add stretchtofit {
332	Rappture::PushButton $f.stretchtofit \
333	-onimage [Rappture::icon stretchtofit] \
334	-offimage [Rappture::icon stretchtofit] \
335	-variable [itcl::scope _settings(-stretchtofit)] \
336	-command [itcl::code $this AdjustSetting -stretchtofit] \
337	}
338	Rappture::Tooltip::for $itk_component(stretchtofit) \
339	"Stretch plot to fit window on/off"
340	pack $itk_component(stretchtofit) -padx 2 -pady 2
341
342	if { [catch {
343	BuildContourTab
344	BuildAxisTab
345	BuildCameraTab
346	} errs] != 0 } {
347	global errorInfo
348	puts stderr "errs=$errs errorInfo=$errorInfo"
349	}
350
351	# Hack around the Tk panewindow. The problem is that the requested
352	# size of the 3d view isn't set until an image is retrieved from
353	# the server. So the panewindow uses the tiny size.
354	set w 10000
355	pack forget $itk_component(view)
356	blt::table $itk_component(plotarea) \
357	0,0 $itk_component(view) -fill both -reqwidth $w
358	blt::table configure $itk_component(plotarea) c1 -resize none
359
360	# Bindings for panning via mouse
361	bind $itk_component(view) <ButtonPress-2> \
362	[itcl::code $this Pan click %x %y]
363	bind $itk_component(view) <B2-Motion> \
364	[itcl::code $this Pan drag %x %y]
365	bind $itk_component(view) <ButtonRelease-2> \
366	[itcl::code $this Pan release %x %y]
367
368	#bind $itk_component(view) <ButtonRelease-3> \
369	# [itcl::code $this Pick %x %y]
370
371	# Bindings for panning via keyboard
372	bind $itk_component(view) <KeyPress-Left> \
373	[itcl::code $this Pan set -10 0]
374	bind $itk_component(view) <KeyPress-Right> \
375	[itcl::code $this Pan set 10 0]
376	bind $itk_component(view) <KeyPress-Up> \
377	[itcl::code $this Pan set 0 -10]
378	bind $itk_component(view) <KeyPress-Down> \
379	[itcl::code $this Pan set 0 10]
380	bind $itk_component(view) <Shift-KeyPress-Left> \
381	[itcl::code $this Pan set -2 0]
382	bind $itk_component(view) <Shift-KeyPress-Right> \
383	[itcl::code $this Pan set 2 0]
384	bind $itk_component(view) <Shift-KeyPress-Up> \
385	[itcl::code $this Pan set 0 -2]
386	bind $itk_component(view) <Shift-KeyPress-Down> \
387	[itcl::code $this Pan set 0 2]
388
389	# Bindings for zoom via keyboard
390	bind $itk_component(view) <KeyPress-Prior> \
391	[itcl::code $this Zoom out]
392	bind $itk_component(view) <KeyPress-Next> \
393	[itcl::code $this Zoom in]
394
395	bind $itk_component(view) <Enter> "focus $itk_component(view)"
396
397	if {[string equal "x11" [tk windowingsystem]]} {
398	# Bindings for zoom via mouse
399	bind $itk_component(view) <4> [itcl::code $this Zoom out]
400	bind $itk_component(view) <5> [itcl::code $this Zoom in]
401	}
402
403	set _image(download) [image create photo]
404	eval itk_initialize $args
405	Connect
406	}
407
408	# ----------------------------------------------------------------------
409	# DESTRUCTOR
410	# ----------------------------------------------------------------------
411	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
412	Disconnect
413	image delete $_image(plot)
414	image delete $_image(download)
415	catch { blt::arcball destroy $_arcball }
416	}
417
418	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
419	if { $_width < 2 } {
420	set _width 500
421	}
422	if { $_height < 2 } {
423	set _height 500
424	}
425	set _start [clock clicks -milliseconds]
426	SendCmd "screen size [expr $_width - 20] $_height"
427
428	set font "Arial 8"
429	set lh [font metrics $font -linespace]
430	set h [expr {$_height - 2 * ($lh + 2)}]
431	if { $h != $_legendHeight } {
432	EventuallyRequestLegend
433	} else {
434	DrawLegend
435	}
436	set _resizePending 0
437	}
438
439	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
440	SendCmd "camera orient [ViewToQuaternion]"
441	set _rotatePending 0
442	}
443
444	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
445	if { !$_legendPending } {
446	set _legendPending 1
447	$_dispatcher event -idle !legend
448	}
449	}
450
451	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
452	set _width $w
453	set _height $h
454	$_arcball resize $w $h
455	if { !$_resizePending } {
456	set _resizePending 1
457	$_dispatcher event -after 250 !resize
458	}
459	}
460
461	set rotate_delay 100
462
463	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
464	QuaternionToView $q
465	if { !$_rotatePending } {
466	set _rotatePending 1
467	global rotate_delay
468	$_dispatcher event -after $rotate_delay !rotate
469	}
470	}
471
472	# ----------------------------------------------------------------------
473	# USAGE: add <dataobj> ?<settings>?
474	#
475	# Clients use this to add a data object to the plot. The optional
476	# <settings> are used to configure the plot. Allowed settings are
477	# -color, -brightness, -width, -linestyle, and -raise.
478	# ----------------------------------------------------------------------
479	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
480	if { ![$dataobj isvalid] } {
481	return; # Object doesn't contain valid data.
482	}
483	array set params {
484	-color auto
485	-width 1
486	-linestyle solid
487	-brightness 0
488	-raise 0
489	-description ""
490	-param ""
491	-type ""
492	}
493	array set params $settings
494	set params(-description) ""
495	set params(-param) ""
496	array set params $settings
497
498	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
499	# can't handle -autocolors yet
500	set params(-color) white
501	}
502	set pos [lsearch -exact $_dlist $dataobj]
503	if {$pos < 0} {
504	lappend _dlist $dataobj
505	}
506	set _obj2ovride($dataobj-color) $params(-color)
507	set _obj2ovride($dataobj-width) $params(-width)
508	set _obj2ovride($dataobj-raise) $params(-raise)
509	$_dispatcher event -idle !rebuild
510	}
511
512
513	# ----------------------------------------------------------------------
514	# USAGE: delete ?<dataobj1> <dataobj2> ...?
515	#
516	# Clients use this to delete a dataobj from the plot. If no dataobjs
517	# are specified, then all dataobjs are deleted. No data objects are
518	# deleted. They are only removed from the display list.
519	#
520	# ----------------------------------------------------------------------
521	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
522	if { [llength $args] == 0} {
523	set args $_dlist
524	}
525	# Delete all specified dataobjs
526	set changed 0
527	foreach dataobj $args {
528	set pos [lsearch -exact $_dlist $dataobj]
529	if { $pos < 0 } {
530	continue; # Don't know anything about it.
531	}
532	# Remove it from the dataobj list.
533	set _dlist [lreplace $_dlist $pos $pos]
534	array unset _obj2ovride $dataobj-*
535	array unset _settings $dataobj-*
536	set changed 1
537	}
538	# If anything changed, then rebuild the plot
539	if { $changed } {
540	$_dispatcher event -idle !rebuild
541	}
542	}
543
544	# ----------------------------------------------------------------------
545	# USAGE: get ?-objects?
546	# USAGE: get ?-visible?
547	# USAGE: get ?-image view?
548	#
549	# Clients use this to query the list of objects being plotted, in
550	# order from bottom to top of this result. The optional "-image"
551	# flag can also request the internal images being shown.
552	# ----------------------------------------------------------------------
553	itcl::body Rappture::VtkHeightmapViewer::get {args} {
554	if {[llength $args] == 0} {
555	set args "-objects"
556	}
557	set op [lindex $args 0]
558	switch -- $op {
559	"-objects" {
560	# put the dataobj list in order according to -raise options
561	set dlist {}
562	foreach dataobj $_dlist {
563	if { ![IsValidObject $dataobj] } {
564	continue
565	}
566	if {[info exists _obj2ovride($dataobj-raise)] &&
567	$_obj2ovride($dataobj-raise)} {
568	set dlist [linsert $dlist 0 $dataobj]
569	} else {
570	lappend dlist $dataobj
571	}
572	}
573	return $dlist
574	}
575	"-visible" {
576	set dlist {}
577	foreach dataobj $_dlist {
578	if { ![IsValidObject $dataobj] } {
579	continue
580	}
581	if { ![info exists _obj2ovride($dataobj-raise)] } {
582	# No setting indicates that the object isn't visible.
583	continue
584	}
585	# Otherwise use the -raise parameter to put the object to
586	# the front of the list.
587	if { $_obj2ovride($dataobj-raise) } {
588	set dlist [linsert $dlist 0 $dataobj]
589	} else {
590	lappend dlist $dataobj
591	}
592	}
593	return $dlist
594	}
595	-image {
596	if {[llength $args] != 2} {
597	error "wrong # args: should be \"get -image view\""
598	}
599	switch -- [lindex $args end] {
600	view {
601	return $_image(plot)
602	}
603	default {
604	error "bad image name \"[lindex $args end]\": should be view"
605	}
606	}
607	}
608	default {
609	error "bad option \"$op\": should be -objects or -image"
610	}
611	}
612	}
613
614	#
615	# scale --
616	#
617	# This gets called either incrementally as new simulations are
618	# added or all at once as a sequence of heightmaps.
619	# This accounts for all objects--even those not showing on the
620	# screen. Because of this, the limits are appropriate for all
621	# objects as the user scans through data in the ResultSet viewer.
622	#
623	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
624	foreach dataobj $args {
625	if { ![$dataobj isvalid] } {
626	continue; # Object doesn't contain valid data.
627	}
628	foreach axis { x y } {
629	set lim [$dataobj limits $axis]
630	if { ![info exists _limits($axis)] } {
631	set _limits($axis) $lim
632	continue
633	}
634	foreach {min max} $lim break
635	foreach {amin amax} $_limits($axis) break
636	if { $amin > $min } {
637	set amin $min
638	}
639	if { $amax < $max } {
640	set amax $max
641	}
642	set _limits($axis) [list $amin $amax]
643	set units [$dataobj hints ${axis}units]
644	set found($units) 1
645	}
646	foreach { fname lim } [$dataobj fieldlimits] {
647	if { ![info exists _limits($fname)] } {
648	set _limits($fname) $lim
649	continue
650	}
651	foreach {min max} $lim break
652	foreach {fmin fmax} $_limits($fname) break
653	if { $fmin > $min } {
654	set fmin $min
655	}
656	if { $fmax < $max } {
657	set fmax $max
658	}
659	set _limits($fname) [list $fmin $fmax]
660	}
661	}
662	if { [array size found] > 1 } {
663	set _settings(-stretchtofit) 1
664	} else {
665	# Check if the range of the x and y axes requires that we stretch
666	# the contour to fit the plotting area. This can happen when the
667	# x and y scales differ greatly (> 100x)
668	foreach {xmin xmax} $_limits(x) break
669	foreach {ymin ymax} $_limits(y) break
670	if { (($xmax - $xmin) > (($ymax -$ymin) * $_maxScale)) \|\|
671	((($xmax - $xmin) * $_maxScale) < ($ymax -$ymin)) } {
672	set _settings(-stretchtofit) 1
673	}
674	}
675	}
676
677	# ----------------------------------------------------------------------
678	# USAGE: download coming
679	# USAGE: download controls <downloadCommand>
680	# USAGE: download now
681	#
682	# Clients use this method to create a downloadable representation
683	# of the plot. Returns a list of the form {ext string}, where
684	# "ext" is the file extension (indicating the type of data) and
685	# "string" is the data itself.
686	# ----------------------------------------------------------------------
687	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
688	switch $option {
689	coming {
690	if {[catch {
691	blt::winop snap $itk_component(plotarea) $_image(download)
692	}]} {
693	$_image(download) configure -width 1 -height 1
694	$_image(download) put #000000
695	}
696	}
697	controls {
698	set popup .vtkviewerdownload
699	if { ![winfo exists .vtkviewerdownload] } {
700	set inner [BuildDownloadPopup $popup [lindex $args 0]]
701	} else {
702	set inner [$popup component inner]
703	}
704	set _downloadPopup(image_controls) $inner.image_frame
705	set num [llength [get]]
706	set num [expr {($num == 1) ? "1 result" : "$num results"}]
707	set word [Rappture::filexfer::label downloadWord]
708	$inner.summary configure -text "$word $num in the following format:"
709	update idletasks ;# Fix initial sizes
710	return $popup
711	}
712	now {
713	set popup .vtkviewerdownload
714	if {[winfo exists .vtkviewerdownload]} {
715	$popup deactivate
716	}
717	switch -- $_downloadPopup(format) {
718	"image" {
719	return [$this GetImage [lindex $args 0]]
720	}
721	"vtk" {
722	return [$this GetVtkData [lindex $args 0]]
723	}
724	}
725	return ""
726	}
727	default {
728	error "bad option \"$option\": should be coming, controls, now"
729	}
730	}
731	}
732
733	# ----------------------------------------------------------------------
734	# USAGE: Connect ?<host:port>,<host:port>...?
735	#
736	# Clients use this method to establish a connection to a new
737	# server, or to reestablish a connection to the previous server.
738	# Any existing connection is automatically closed.
739	# ----------------------------------------------------------------------
740	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
741	global readyForNextFrame
742	set readyForNextFrame 1
743	set _hosts [GetServerList "vtkvis"]
744	if { "" == $_hosts } {
745	return 0
746	}
747	set _reset 1
748	set result [VisViewer::Connect $_hosts]
749	if { $result } {
750	if { $_reportClientInfo } {
751	# Tell the server the viewer, hub, user and session.
752	# Do this immediately on connect before buffering any commands
753	global env
754
755	set info {}
756	set user "???"
757	if { [info exists env(USER)] } {
758	set user $env(USER)
759	}
760	set session "???"
761	if { [info exists env(SESSION)] } {
762	set session $env(SESSION)
763	}
764	lappend info "version" "$Rappture::version"
765	lappend info "build" "$Rappture::build"
766	lappend info "svnurl" "$Rappture::svnurl"
767	lappend info "installdir" "$Rappture::installdir"
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 _colormaps
814	global readyForNextFrame
815	set readyForNextFrame 1
816	}
817
818	# ----------------------------------------------------------------------
819	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
820	#
821	# Invoked automatically whenever the "image" command comes in from
822	# the rendering server. Indicates that binary image data with the
823	# specified <size> will follow.
824	# ----------------------------------------------------------------------
825	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
826	global readyForNextFrame
827	set readyForNextFrame 1
828	array set info {
829	-token "???"
830	-bytes 0
831	-type image
832	}
833	array set info $args
834	set bytes [ReceiveBytes $info(-bytes)]
835	if { $info(-type) == "image" } {
836	if 0 {
837	set f [open "last.ppm" "w"]
838	fconfigure $f -encoding binary
839	puts -nonewline $f $bytes
840	close $f
841	}
842	$_image(plot) configure -data $bytes
843	set time [clock seconds]
844	set date [clock format $time]
845	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
846	if { $_start > 0 } {
847	set finish [clock clicks -milliseconds]
848	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
849	set _start 0
850	}
851	} elseif { $info(type) == "print" } {
852	set tag $this-print-$info(-token)
853	set _hardcopy($tag) $bytes
854	}
855	}
856
857	#
858	# ReceiveDataset --
859	#
860	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
861	if { ![isconnected] } {
862	return
863	}
864	set option [lindex $args 0]
865	switch -- $option {
866	"scalar" {
867	set option [lindex $args 1]
868	switch -- $option {
869	"world" {
870	foreach { x y z value tag } [lrange $args 2 end] break
871	}
872	"pixel" {
873	foreach { x y value tag } [lrange $args 2 end] break
874	}
875	}
876	}
877	"vector" {
878	set option [lindex $args 1]
879	switch -- $option {
880	"world" {
881	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
882	}
883	"pixel" {
884	foreach { x y vx vy vz tag } [lrange $args 2 end] break
885	}
886	}
887	}
888	"names" {
889	foreach { name } [lindex $args 1] {
890	#puts stderr "Dataset: $name"
891	}
892	}
893	default {
894	error "unknown dataset option \"$option\" from server"
895	}
896	}
897	}
898
899	# ----------------------------------------------------------------------
900	# USAGE: Rebuild
901	#
902	# Called automatically whenever something changes that affects the
903	# data in the widget. Clears any existing data and rebuilds the
904	# widget to display new data.
905	# ----------------------------------------------------------------------
906	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
907	set w [winfo width $itk_component(view)]
908	set h [winfo height $itk_component(view)]
909	if { $w < 2 \|\| $h < 2 } {
910	update
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	# Setting a custom exponent and label format for axes is causing
936	# a problem with rounding. Near zero ticks aren't rounded by
937	# the %g format. The VTK CubeAxes seem to currently work best
938	# when allowed to automatically set the exponent and precision
939	# based on the axis ranges. This does tend to result in less
940	# visual clutter, so I think it is best to use the automatic
941	# settings by default. We can test more fine-grained
942	# controls on the axis settings tab if necessary.
943	# -Leif
944	#SendCmd "axis exp 0 0 0 1"
945
946	SendCmd "axis lrot z 90"
947	$_arcball quaternion [ViewToQuaternion]
948	if {$_settings(-isheightmap) } {
949	if { $_view(-ortho)} {
950	SendCmd "camera mode ortho"
951	} else {
952	SendCmd "camera mode persp"
953	}
954	DoRotate
955	SendCmd "camera reset"
956	}
957	PanCamera
958	StopBufferingCommands
959	SendCmd "imgflush"
960	StartBufferingCommands
961	}
962
963	set _first ""
964	# Start off with no datasets are visible.
965	SendCmd "dataset visible 0"
966	set scale [GetHeightmapScale]
967	foreach dataobj [get -objects] {
968	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
969	set _first $dataobj
970	}
971	foreach comp [$dataobj components] {
972	set tag $dataobj-$comp
973	if { ![info exists _datasets($tag)] } {
974	set bytes [$dataobj vtkdata $comp]
975	if 0 {
976	set f [open /tmp/vtkheightmap.vtk "w"]
977	fconfigure $f -translation binary -encoding binary
978	puts -nonewline $f $bytes
979	close $f
980	}
981	set length [string length $bytes]
982	if { $_reportClientInfo } {
983	set info {}
984	lappend info "tool_id" [$dataobj hints toolid]
985	lappend info "tool_name" [$dataobj hints toolname]
986	lappend info "tool_title" [$dataobj hints tooltitle]
987	lappend info "tool_command" [$dataobj hints toolcommand]
988	lappend info "tool_revision" [$dataobj hints toolrevision]
989	lappend info "dataset_label" [$dataobj hints label]
990	lappend info "dataset_size" $length
991	lappend info "dataset_tag" $tag
992	SendCmd "clientinfo [list $info]"
993	}
994	SendCmd "dataset add $tag data follows $length"
995	SendData $bytes
996	set _datasets($tag) 1
997	SetObjectStyle $dataobj $comp
998	}
999	if { [info exists _obj2ovride($dataobj-raise)] } {
1000	# Setting dataset visible enables outline
1001	# and heightmap
1002	SendCmd "dataset visible 1 $tag"
1003	}
1004	if { ![info exists _comp2scale($tag)] \|\|
1005	$_comp2scale($tag) != $scale } {
1006	SendCmd "heightmap heightscale $scale $tag"
1007	set _comp2scale($tag) $scale
1008	}
1009	}
1010	}
1011	if { $_first != "" } {
1012	$itk_component(field) choices delete 0 end
1013	$itk_component(fieldmenu) delete 0 end
1014	array unset _fields
1015	set _curFldName ""
1016	foreach cname [$_first components] {
1017	foreach fname [$_first fieldnames $cname] {
1018	if { [info exists _fields($fname)] } {
1019	continue
1020	}
1021	foreach { label units components } \
1022	[$_first fieldinfo $fname] break
1023	$itk_component(field) choices insert end "$fname" "$label"
1024	$itk_component(fieldmenu) add radiobutton -label "$label" \
1025	-value $label -variable [itcl::scope _curFldLabel] \
1026	-selectcolor red \
1027	-activebackground $itk_option(-plotbackground) \
1028	-activeforeground $itk_option(-plotforeground) \
1029	-font "Arial 8" \
1030	-command [itcl::code $this Combo invoke]
1031	set _fields($fname) [list $label $units $components]
1032	if { $_curFldName == "" } {
1033	set _curFldName $fname
1034	set _curFldLabel $label
1035	}
1036	}
1037	}
1038	$itk_component(field) value $_curFldLabel
1039	}
1040	InitSettings -stretchtofit -outline
1041
1042	if { $_reset } {
1043	SendCmd "axis tickpos outside"
1044	#SendCmd "axis lformat all %g"
1045
1046	foreach axis { x y z } {
1047	set label ""
1048	if { $_first != "" } {
1049	if { $axis == "z" } {
1050	set label [$_first hints label]
1051	} else {
1052	set label [$_first hints ${axis}label]
1053	}
1054	}
1055	if { $label == "" } {
1056	if {$axis == "z"} {
1057	if { [string match "component*" $_curFldName] } {
1058	set label [string toupper $axis]
1059	} else {
1060	set label $_curFldLabel
1061	}
1062	} else {
1063	set label [string toupper $axis]
1064	}
1065	}
1066	# May be a space in the axis label.
1067	SendCmd [list axis name $axis $label]
1068
1069	set units ""
1070	if { $_first != "" } {
1071	if { $axis == "z" } {
1072	set units [$_first hints units]
1073	} else {
1074	set units [$_first hints ${axis}units]
1075	}
1076	}
1077	if { $units == "" && $axis == "z" } {
1078	if { $_first != "" && [$_first hints zunits] != "" } {
1079	set units [$_first hints zunits]
1080	} elseif { [info exists _fields($_curFldName)] } {
1081	set units [lindex $_fields($_curFldName) 1]
1082	}
1083	}
1084	# May be a space in the axis units.
1085	SendCmd [list axis units $axis $units]
1086	}
1087	#
1088	# Reset the camera and other view parameters
1089	#
1090	ResetAxes
1091	$_arcball quaternion [ViewToQuaternion]
1092	if {$_settings(-isheightmap) } {
1093	if { $_view(-ortho)} {
1094	SendCmd "camera mode ortho"
1095	} else {
1096	SendCmd "camera mode persp"
1097	}
1098	DoRotate
1099	SendCmd "camera reset"
1100	}
1101	PanCamera
1102	InitSettings -xgrid -ygrid -zgrid \
1103	-axisvisible -axislabels -heightmapscale -field -isheightmap \
1104	-numisolines
1105	if { [array size _fields] < 2 } {
1106	catch {blt::table forget $itk_component(field) $itk_component(field_l)}
1107	}
1108	RequestLegend
1109	set _reset 0
1110	}
1111	global readyForNextFrame
1112	set readyForNextFrame 0; # Don't advance to the next frame
1113
1114	# Actually write the commands to the server socket. If it fails, we don't
1115	# care. We're finished here.
1116	blt::busy hold $itk_component(hull)
1117	StopBufferingCommands
1118	blt::busy release $itk_component(hull)
1119	}
1120
1121	# ----------------------------------------------------------------------
1122	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1123	#
1124	# Returns a list of server IDs for the current datasets being displayed. This
1125	# is normally a single ID, but it might be a list of IDs if the current data
1126	# object has multiple components.
1127	# ----------------------------------------------------------------------
1128	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1129	set flag [lindex $args 0]
1130	switch -- $flag {
1131	"-all" {
1132	if { [llength $args] > 1 } {
1133	error "CurrentDatasets: can't specify dataobj after \"-all\""
1134	}
1135	set dlist [get -objects]
1136	}
1137	"-visible" {
1138	if { [llength $args] > 1 } {
1139	set dlist {}
1140	set args [lrange $args 1 end]
1141	foreach dataobj $args {
1142	if { [info exists _obj2ovride($dataobj-raise)] } {
1143	lappend dlist $dataobj
1144	}
1145	}
1146	} else {
1147	set dlist [get -visible]
1148	}
1149	}
1150	default {
1151	set dlist $args
1152	}
1153	}
1154	set rlist ""
1155	foreach dataobj $dlist {
1156	foreach comp [$dataobj components] {
1157	set tag $dataobj-$comp
1158	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1159	lappend rlist $tag
1160	}
1161	}
1162	}
1163	return $rlist
1164	}
1165
1166	itcl::body Rappture::VtkHeightmapViewer::CameraReset {} {
1167	array set _view {
1168	-qw 0.36
1169	-qx 0.25
1170	-qy 0.50
1171	-qz 0.70
1172	-xpan 0
1173	-ypan 0
1174	-zoom 1.0
1175	}
1176	if { $_first != "" } {
1177	set location [$_first hints camera]
1178	if { $location != "" } {
1179	array set _view $location
1180	}
1181	}
1182	$_arcball quaternion [ViewToQuaternion]
1183	if {$_settings(-isheightmap) } {
1184	DoRotate
1185	}
1186	SendCmd "camera reset"
1187	}
1188
1189	# ----------------------------------------------------------------------
1190	# USAGE: Zoom in
1191	# USAGE: Zoom out
1192	# USAGE: Zoom reset
1193	#
1194	# Called automatically when the user clicks on one of the zoom
1195	# controls for this widget. Changes the zoom for the current view.
1196	# ----------------------------------------------------------------------
1197	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1198	switch -- $option {
1199	"in" {
1200	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1201	SendCmd "camera zoom $_view(-zoom)"
1202	}
1203	"out" {
1204	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1205	SendCmd "camera zoom $_view(-zoom)"
1206	}
1207	"reset" {
1208	array set _view {
1209	-xpan 0
1210	-ypan 0
1211	-zoom 1.0
1212	}
1213	SendCmd "camera reset"
1214	}
1215	}
1216	}
1217
1218	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1219	set x $_view(-xpan)
1220	set y $_view(-ypan)
1221	SendCmd "camera pan $x $y"
1222	}
1223
1224
1225	# ----------------------------------------------------------------------
1226	# USAGE: Rotate click <x> <y>
1227	# USAGE: Rotate drag <x> <y>
1228	# USAGE: Rotate release <x> <y>
1229	#
1230	# Called automatically when the user clicks/drags/releases in the
1231	# plot area. Moves the plot according to the user's actions.
1232	# ----------------------------------------------------------------------
1233	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1234	switch -- $option {
1235	"click" {
1236	$itk_component(view) configure -cursor fleur
1237	set _click(x) $x
1238	set _click(y) $y
1239	}
1240	"drag" {
1241	if {[array size _click] == 0} {
1242	Rotate click $x $y
1243	} else {
1244	set w [winfo width $itk_component(view)]
1245	set h [winfo height $itk_component(view)]
1246	if {$w <= 0 \|\| $h <= 0} {
1247	return
1248	}
1249
1250	if {[catch {
1251	# this fails sometimes for no apparent reason
1252	set dx [expr {double($x-$_click(x))/$w}]
1253	set dy [expr {double($y-$_click(y))/$h}]
1254	}]} {
1255	return
1256	}
1257	if { $dx == 0 && $dy == 0 } {
1258	return
1259	}
1260	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1261	EventuallyRotate $q
1262	set _click(x) $x
1263	set _click(y) $y
1264	}
1265	}
1266	"release" {
1267	Rotate drag $x $y
1268	$itk_component(view) configure -cursor ""
1269	catch {unset _click}
1270	}
1271	default {
1272	error "bad option \"$option\": should be click, drag, release"
1273	}
1274	}
1275	}
1276
1277	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1278	foreach tag [CurrentDatasets -visible] {
1279	SendCmd "dataset getscalar pixel $x $y $tag"
1280	}
1281	}
1282
1283	# ----------------------------------------------------------------------
1284	# USAGE: $this Pan click x y
1285	# $this Pan drag x y
1286	# $this Pan release x y
1287	#
1288	# Called automatically when the user clicks on one of the zoom
1289	# controls for this widget. Changes the zoom for the current view.
1290	# ----------------------------------------------------------------------
1291	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1292	switch -- $option {
1293	"set" {
1294	set w [winfo width $itk_component(view)]
1295	set h [winfo height $itk_component(view)]
1296	set x [expr $x / double($w)]
1297	set y [expr $y / double($h)]
1298	set _view(-xpan) [expr $_view(-xpan) + $x]
1299	set _view(-ypan) [expr $_view(-ypan) + $y]
1300	PanCamera
1301	return
1302	}
1303	"click" {
1304	set _click(x) $x
1305	set _click(y) $y
1306	$itk_component(view) configure -cursor hand1
1307	}
1308	"drag" {
1309	if { ![info exists _click(x)] } {
1310	set _click(x) $x
1311	}
1312	if { ![info exists _click(y)] } {
1313	set _click(y) $y
1314	}
1315	set w [winfo width $itk_component(view)]
1316	set h [winfo height $itk_component(view)]
1317	set dx [expr ($_click(x) - $x)/double($w)]
1318	set dy [expr ($_click(y) - $y)/double($h)]
1319	set _click(x) $x
1320	set _click(y) $y
1321	set _view(-xpan) [expr $_view(-xpan) - $dx]
1322	set _view(-ypan) [expr $_view(-ypan) - $dy]
1323	PanCamera
1324	}
1325	"release" {
1326	Pan drag $x $y
1327	$itk_component(view) configure -cursor ""
1328	}
1329	default {
1330	error "unknown option \"$option\": should set, click, drag, or release"
1331	}
1332	}
1333	}
1334
1335	# ----------------------------------------------------------------------
1336	# USAGE: InitSettings <what> ?<value>?
1337	#
1338	# Used internally to update rendering settings whenever parameters
1339	# change in the popup settings panel. Sends the new settings off
1340	# to the back end.
1341	# ----------------------------------------------------------------------
1342	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1343	foreach spec $args {
1344	if { [info exists _settings($_first${spec})] } {
1345	# Reset global setting with dataobj specific setting
1346	set _settings($spec) $_settings($_first${spec})
1347	}
1348	AdjustSetting $spec
1349	}
1350	}
1351
1352	#
1353	# AdjustSetting --
1354	#
1355	# Changes/updates a specific setting in the widget. There are
1356	# usually user-setable option. Commands are sent to the render
1357	# server.
1358	#
1359	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1360	if { ![isconnected] } {
1361	return
1362	}
1363	switch -- $what {
1364	"-axisflymode" {
1365	set mode [$itk_component(axisflymode) value]
1366	set mode [$itk_component(axisflymode) translate $mode]
1367	set _settings($what) $mode
1368	SendCmd "axis flymode $mode"
1369	}
1370	"-axislabels" {
1371	set bool $_settings($what)
1372	SendCmd "axis labels all $bool"
1373	}
1374	"-axisminorticks" {
1375	set bool $_settings($what)
1376	SendCmd "axis minticks all $bool"
1377	}
1378	"-axisvisible" {
1379	set bool $_settings($what)
1380	SendCmd "axis visible all $bool"
1381	}
1382	"-background" {
1383	set bg [$itk_component(background) value]
1384	array set fgcolors {
1385	"black" "white"
1386	"white" "black"
1387	"grey" "black"
1388	}
1389	set fg $fgcolors($bg)
1390	configure -plotbackground $bg -plotforeground $fg
1391	$itk_component(view) delete "legend"
1392	SendCmd "screen bgcolor [Color2RGB $bg]"
1393	SendCmd "outline color [Color2RGB $fg]"
1394	SendCmd "axis color all [Color2RGB $fg]"
1395	DrawLegend
1396	}
1397	"-colormap" {
1398	set _changed($what) 1
1399	StartBufferingCommands
1400	set color [$itk_component(colormap) value]
1401	set _settings($what) $color
1402	if { $color == "none" } {
1403	if { $_settings(-colormapvisible) } {
1404	SendCmd "heightmap surface 0"
1405	set _settings(-colormapvisible) 0
1406	}
1407	} else {
1408	if { !$_settings(-colormapvisible) } {
1409	SendCmd "heightmap surface 1"
1410	set _settings(-colormapvisible) 1
1411	}
1412	SetCurrentColormap $color
1413	if {$_settings(-colormapdiscrete)} {
1414	set numColors [expr $_settings(-numisolines) + 1]
1415	SendCmd "colormap res $numColors $color"
1416	}
1417	}
1418	StopBufferingCommands
1419	EventuallyRequestLegend
1420	}
1421	"-colormapvisible" {
1422	set bool $_settings($what)
1423	SendCmd "heightmap surface $bool"
1424	}
1425	"-colormapdiscrete" {
1426	set bool $_settings($what)
1427	set numColors [expr $_settings(-numisolines) + 1]
1428	StartBufferingCommands
1429	if {$bool} {
1430	SendCmd "colormap res $numColors"
1431	# Discrete colormap requires preinterp on
1432	SendCmd "heightmap preinterp on"
1433	} else {
1434	SendCmd "colormap res default"
1435	# FIXME: add setting for preinterp (default on)
1436	SendCmd "heightmap preinterp on"
1437	}
1438	StopBufferingCommands
1439	EventuallyRequestLegend
1440	}
1441	"-edges" {
1442	set bool $_settings($what)
1443	SendCmd "heightmap edges $bool"
1444	}
1445	"-field" {
1446	set label [$itk_component(field) value]
1447	set fname [$itk_component(field) translate $label]
1448	set _settings($what) $fname
1449	if { [info exists _fields($fname)] } {
1450	foreach { label units components } $_fields($fname) break
1451	if { $components > 1 } {
1452	set _colorMode vmag
1453	} else {
1454	set _colorMode scalar
1455	}
1456	set _curFldName $fname
1457	set _curFldLabel $label
1458	} else {
1459	puts stderr "unknown field \"$fname\""
1460	return
1461	}
1462	set label ""
1463	if { $_first != "" } {
1464	set label [$_first hints label]
1465	}
1466	if { $label == "" } {
1467	if { [string match "component*" $_curFldName] } {
1468	set label Z
1469	} else {
1470	set label $_curFldLabel
1471	}
1472	}
1473	# May be a space in the axis label.
1474	SendCmd [list axis name z $label]
1475
1476	set units ""
1477	if { $_first != "" } {
1478	set units [$_first hints units]
1479	}
1480	if { $units == "" } {
1481	if { $_first != "" && [$_first hints zunits] != "" } {
1482	set units [$_first hints zunits]
1483	} elseif { [info exists _fields($_curFldName)] } {
1484	set units [lindex $_fields($_curFldName) 1]
1485	}
1486	}
1487	# May be a space in the axis units.
1488	SendCmd [list axis units z $units]
1489	# Get the new limits because the field changed.
1490	ResetAxes
1491	SendCmd "dataset scalar $_curFldName"
1492	SendCmd "heightmap colormode scalar $_curFldName"
1493	Zoom reset
1494	UpdateContourList
1495	DrawLegend
1496	}
1497	"-heightmapscale" {
1498	if { $_settings(-isheightmap) } {
1499	set scale [GetHeightmapScale]
1500	# Have to set the datasets individually because we are
1501	# tracking them in _comp2scale.
1502	foreach dataset [CurrentDatasets -all] {
1503	SendCmd "heightmap heightscale $scale $dataset"
1504	set _comp2scale($dataset) $scale
1505	}
1506	ResetAxes
1507	}
1508	}
1509	"-isheightmap" {
1510	set bool $_settings($what)
1511	set c $itk_component(view)
1512	StartBufferingCommands
1513	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1514	if { $bool } {
1515	set _settings(-heightmapscale) 50
1516	set _settings(-opacity) $_settings(-saveopacity)
1517	set _settings(-lighting) $_settings(-savelighting)
1518	set _settings(-outline) 0
1519	} else {
1520	set _settings(-heightmapscale) 0
1521	set _settings(-lighting) 0
1522	set _settings(-opacity) 100
1523	set _settings(-outline) $_settings(-saveoutline)
1524	}
1525	InitSettings -lighting -opacity -outline
1526	set scale [GetHeightmapScale]
1527	# Have to set the datasets individually because we are
1528	# tracking them in _comp2scale.
1529	foreach dataset [CurrentDatasets -all] {
1530	SendCmd "heightmap heightscale $scale $dataset"
1531	set _comp2scale($dataset) $scale
1532	}
1533	if { $bool } {
1534	$itk_component(lighting) configure -state normal
1535	$itk_component(opacity) configure -state normal
1536	$itk_component(scale) configure -state normal
1537	$itk_component(opacity_l) configure -state normal
1538	$itk_component(scale_l) configure -state normal
1539	$itk_component(outline) configure -state disabled
1540	if {$_view(-ortho)} {
1541	SendCmd "camera mode ortho"
1542	} else {
1543	SendCmd "camera mode persp"
1544	}
1545	} else {
1546	$itk_component(lighting) configure -state disabled
1547	$itk_component(opacity) configure -state disabled
1548	$itk_component(scale) configure -state disabled
1549	$itk_component(opacity_l) configure -state disabled
1550	$itk_component(scale_l) configure -state disabled
1551	$itk_component(outline) configure -state normal
1552	SendCmd "camera mode image"
1553	}
1554	if {$_settings(-stretchtofit)} {
1555	if {$scale == 0} {
1556	SendCmd "camera aspect window"
1557	} else {
1558	SendCmd "camera aspect square"
1559	}
1560	}
1561	ResetAxes
1562	if { $bool } {
1563	set q [ViewToQuaternion]
1564	$_arcball quaternion $q
1565	SendCmd "camera orient $q"
1566	} else {
1567	bind $c <ButtonPress-1> {}
1568	bind $c <B1-Motion> {}
1569	bind $c <ButtonRelease-1> {}
1570	}
1571	Zoom reset
1572	# Fix the mouse bindings for rotation/panning and the
1573	# camera mode. Ideally we'd create a bindtag for these.
1574	if { $bool } {
1575	# Bindings for rotation via mouse
1576	bind $c <ButtonPress-1> \
1577	[itcl::code $this Rotate click %x %y]
1578	bind $c <B1-Motion> \
1579	[itcl::code $this Rotate drag %x %y]
1580	bind $c <ButtonRelease-1> \
1581	[itcl::code $this Rotate release %x %y]
1582	}
1583	StopBufferingCommands
1584	}
1585	"-isolinecolor" {
1586	set color [$itk_component(isolinecolor) value]
1587	if { $color == "none" } {
1588	if { $_settings(-isolinesvisible) } {
1589	SendCmd "heightmap isolines 0"
1590	set _settings(-isolinesvisible) 0
1591	}
1592	} else {
1593	if { !$_settings(-isolinesvisible) } {
1594	SendCmd "heightmap isolines 1"
1595	set _settings(-isolinesvisible) 1
1596	}
1597	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1598	}
1599	DrawLegend
1600	}
1601	"-isolinesvisible" {
1602	set bool $_settings($what)
1603	SendCmd "heightmap isolines $bool"
1604	DrawLegend
1605	}
1606	"-legendvisible" {
1607	if { !$_settings($what) } {
1608	$itk_component(view) delete legend
1609	}
1610	DrawLegend
1611	}
1612	"-lighting" {
1613	if { $_settings(-isheightmap) } {
1614	set _settings(-savelighting) $_settings($what)
1615	set bool $_settings($what)
1616	SendCmd "heightmap lighting $bool"
1617	} else {
1618	SendCmd "heightmap lighting 0"
1619	}
1620	}
1621	"-numisolines" {
1622	set _settings($what) [$itk_component(numisolines) value]
1623	set _currentNumIsolines $_settings($what)
1624	UpdateContourList
1625	set _changed($what) 1
1626	SendCmd "heightmap contourlist [list $_contourList]"
1627	if {$_settings(-colormapdiscrete)} {
1628	set numColors [expr $_settings($what) + 1]
1629	SendCmd "colormap res $numColors"
1630	EventuallyRequestLegend
1631	} else {
1632	DrawLegend
1633	}
1634	}
1635	"-opacity" {
1636	set _changed($what) 1
1637	set val [expr $_settings($what) * 0.01]
1638	if { $_settings(-isheightmap) } {
1639	set _settings(-saveopacity) $_settings($what)
1640	SendCmd "heightmap opacity $val"
1641	} else {
1642	SendCmd "heightmap opacity 1.0"
1643	}
1644	}
1645	"-outline" {
1646	if { $_settings(-isheightmap) } {
1647	SendCmd "outline visible 0"
1648	} else {
1649	set _settings(-saveoutline) $_settings($what)
1650	set bool $_settings($what)
1651	SendCmd "outline visible $bool"
1652	}
1653	}
1654	"-stretchtofit" {
1655	set bool $_settings($what)
1656	if { $bool } {
1657	set heightScale [GetHeightmapScale]
1658	if {$heightScale == 0} {
1659	SendCmd "camera aspect window"
1660	} else {
1661	SendCmd "camera aspect square"
1662	}
1663	} else {
1664	SendCmd "camera aspect native"
1665	}
1666	Zoom reset
1667	}
1668	"-wireframe" {
1669	set bool $_settings($what)
1670	SendCmd "heightmap wireframe $bool"
1671	}
1672	"-xgrid" - "-ygrid" - "-zgrid" {
1673	set axis [string tolower [string range $what 1 1]]
1674	set bool $_settings($what)
1675	SendCmd "axis grid $axis $bool"
1676	}
1677	default {
1678	error "don't know how to fix $what"
1679	}
1680	}
1681	}
1682
1683	#
1684	# RequestLegend --
1685	#
1686	# Request a new legend from the server. The size of the legend
1687	# is determined from the height of the canvas.
1688	#
1689	# This should be called when
1690	# 1. A new current colormap is set.
1691	# 2. Window is resized.
1692	# 3. The limits of the data have changed. (Just need a redraw).
1693	# 4. Number of isolines have changed. (Just need a redraw).
1694	# 5. Legend becomes visible (Just need a redraw).
1695	#
1696	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1697	set _legendPending 0
1698	set font "Arial 8"
1699	set w 12
1700	set lineht [font metrics $font -linespace]
1701	# color ramp height = (canvas height) - (min and max value lines) - 2
1702	set h [expr {$_height - 2 * ($lineht + 2)}]
1703	set _legendHeight $h
1704
1705	set fname $_curFldName
1706	if { [string match "component*" $fname] } {
1707	set title ""
1708	} else {
1709	if { [info exists _fields($fname)] } {
1710	foreach { title units } $_fields($fname) break
1711	if { $units != "" } {
1712	set title [format "%s (%s)" $title $units]
1713	}
1714	} else {
1715	set title $fname
1716	}
1717	}
1718	# If there's a title too, substract one more line
1719	if { $title != "" } {
1720	incr h -$lineht
1721	}
1722	if { $h < 1 } {
1723	return
1724	}
1725	# Set the legend on the first heightmap dataset.
1726	if { $_currentColormap != "" } {
1727	set cmap $_currentColormap
1728	if { ![info exists _colormaps($cmap)] } {
1729	BuildColormap $cmap
1730	set _colormaps($cmap) 1
1731	}
1732	#SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1733	SendCmd "legend2 $cmap $w $h"
1734	}
1735	}
1736
1737	#
1738	# ResetAxes --
1739	#
1740	# Set axis z bounds and range
1741	#
1742	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1743	if { ![info exists _limits($_curFldName)]} {
1744	SendCmd "dataset maprange all"
1745	SendCmd "axis autorange z on"
1746	SendCmd "axis autobounds z on"
1747	return
1748	}
1749	foreach { xmin xmax } $_limits(x) break
1750	foreach { ymin ymax } $_limits(y) break
1751	foreach { vmin vmax } $_limits($_curFldName) break
1752
1753	global tcl_precision
1754	set tcl_precision 17
1755	set xr [expr $xmax - $xmin]
1756	set yr [expr $ymax - $ymin]
1757	set vr [expr $vmax - $vmin]
1758	set r [expr ($yr > $xr) ? $yr : $xr]
1759	if { $vr < 1.0e-17 } {
1760	set dataScale 1.0
1761	} else {
1762	set dataScale [expr $r / $vr]
1763	}
1764	set heightScale [GetHeightmapScale]
1765	set bmin [expr $heightScale * $dataScale * $vmin]
1766	set bmax [expr $heightScale * $dataScale * $vmax]
1767	if {$heightScale > 0} {
1768	set zpos [expr - $bmin]
1769	SendCmd "heightmap pos 0 0 $zpos"
1770	} else {
1771	SendCmd "heightmap pos 0 0 0"
1772	}
1773	set bmax [expr $bmax - $bmin]
1774	set bmin 0
1775	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1776	SendCmd "axis bounds z $bmin $bmax"
1777	SendCmd "axis range z $_limits($_curFldName)"
1778	}
1779
1780	#
1781	# SetCurrentColormap --
1782	#
1783	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1784	# Keep track of the colormaps that we build.
1785	if { $name != "none" && ![info exists _colormaps($name)] } {
1786	BuildColormap $name
1787	set _colormaps($name) 1
1788	}
1789	set _currentColormap $name
1790	SendCmd "heightmap colormap $_currentColormap"
1791	}
1792
1793	#
1794	# BuildColormap --
1795	#
1796	# Build the designated colormap on the server.
1797	#
1798	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1799	set cmap [ColorsToColormap $name]
1800	if { [llength $cmap] == 0 } {
1801	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1802	}
1803	set amap "0.0 1.0 1.0 1.0"
1804	SendCmd "colormap add $name { $cmap } { $amap }"
1805	}
1806
1807	# ----------------------------------------------------------------------
1808	# CONFIGURATION OPTION: -mode
1809	# ----------------------------------------------------------------------
1810	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1811	switch -- $itk_option(-mode) {
1812	"heightmap" {
1813	set _settings(-isheightmap) 1
1814	}
1815	"contour" {
1816	set _settings(-isheightmap) 0
1817	}
1818	default {
1819	error "unknown mode settings \"$itk_option(-mode)\""
1820	}
1821	}
1822	if { !$_reset } {
1823	AdjustSetting -isheightmap
1824	}
1825	}
1826
1827	# ----------------------------------------------------------------------
1828	# CONFIGURATION OPTION: -plotbackground
1829	# ----------------------------------------------------------------------
1830	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1831	if { [isconnected] } {
1832	set rgb [Color2RGB $itk_option(-plotbackground)]
1833	if { !$_reset } {
1834	SendCmd "screen bgcolor $rgb"
1835	}
1836	$itk_component(view) configure -background $itk_option(-plotbackground)
1837	}
1838	}
1839
1840	# ----------------------------------------------------------------------
1841	# CONFIGURATION OPTION: -plotforeground
1842	# ----------------------------------------------------------------------
1843	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1844	if { [isconnected] } {
1845	set rgb [Color2RGB $itk_option(-plotforeground)]
1846	if { !$_reset } {
1847	SendCmd "axis color all $rgb"
1848	SendCmd "outline color $rgb"
1849	}
1850	}
1851	}
1852
1853	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1854
1855	set fg [option get $itk_component(hull) font Font]
1856	#set bfg [option get $itk_component(hull) boldFont Font]
1857
1858	set inner [$itk_component(main) insert end \
1859	-title "Contour/Surface Settings" \
1860	-icon [Rappture::icon contour2]]
1861	$inner configure -borderwidth 4
1862
1863	checkbutton $inner.legend \
1864	-text "Legend" \
1865	-variable [itcl::scope _settings(-legendvisible)] \
1866	-command [itcl::code $this AdjustSetting -legendvisible] \
1867	-font "Arial 9"
1868
1869	checkbutton $inner.wireframe \
1870	-text "Wireframe" \
1871	-variable [itcl::scope _settings(-wireframe)] \
1872	-command [itcl::code $this AdjustSetting -wireframe] \
1873	-font "Arial 9"
1874
1875	itk_component add lighting {
1876	checkbutton $inner.lighting \
1877	-text "Enable Lighting" \
1878	-variable [itcl::scope _settings(-lighting)] \
1879	-command [itcl::code $this AdjustSetting -lighting] \
1880	-font "Arial 9"
1881	} {
1882	ignore -font
1883	}
1884	checkbutton $inner.edges \
1885	-text "Edges" \
1886	-variable [itcl::scope _settings(-edges)] \
1887	-command [itcl::code $this AdjustSetting -edges] \
1888	-font "Arial 9"
1889
1890	itk_component add outline {
1891	checkbutton $inner.outline \
1892	-text "Outline" \
1893	-variable [itcl::scope _settings(-outline)] \
1894	-command [itcl::code $this AdjustSetting -outline] \
1895	-font "Arial 9"
1896	} {
1897	ignore -font
1898	}
1899	checkbutton $inner.stretch \
1900	-text "Stretch to fit" \
1901	-variable [itcl::scope _settings(-stretchtofit)] \
1902	-command [itcl::code $this AdjustSetting -stretchtofit] \
1903	-font "Arial 9"
1904
1905	checkbutton $inner.isolines \
1906	-text "Isolines" \
1907	-variable [itcl::scope _settings(-isolinesvisible)] \
1908	-command [itcl::code $this AdjustSetting -isolinesvisible] \
1909	-font "Arial 9"
1910
1911	checkbutton $inner.colormapDiscrete \
1912	-text "Discrete Colormap" \
1913	-variable [itcl::scope _settings(-colormapdiscrete)] \
1914	-command [itcl::code $this AdjustSetting -colormapdiscrete] \
1915	-font "Arial 9"
1916
1917	itk_component add field_l {
1918	label $inner.field_l -text "Field" -font "Arial 9"
1919	} {
1920	ignore -font
1921	}
1922	itk_component add field {
1923	Rappture::Combobox $inner.field -width 10 -editable no
1924	}
1925	bind $inner.field <<Value>> \
1926	[itcl::code $this AdjustSetting -field]
1927
1928	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1929	itk_component add colormap {
1930	Rappture::Combobox $inner.colormap -width 10 -editable no
1931	}
1932	$inner.colormap choices insert end [GetColormapList -includeNone]
1933	$itk_component(colormap) value $_settings(-colormap)
1934	bind $inner.colormap <<Value>> \
1935	[itcl::code $this AdjustSetting -colormap]
1936
1937	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1938	itk_component add isolinecolor {
1939	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1940	}
1941	$inner.isolinecolor choices insert end \
1942	"black" "black" \
1943	"blue" "blue" \
1944	"cyan" "cyan" \
1945	"green" "green" \
1946	"grey" "grey" \
1947	"magenta" "magenta" \
1948	"orange" "orange" \
1949	"red" "red" \
1950	"white" "white" \
1951	"none" "none"
1952
1953	$itk_component(isolinecolor) value $_settings(-isolinecolor)
1954	bind $inner.isolinecolor <<Value>> \
1955	[itcl::code $this AdjustSetting -isolinecolor]
1956
1957	label $inner.background_l -text "Background Color" -font "Arial 9"
1958	itk_component add background {
1959	Rappture::Combobox $inner.background -width 10 -editable no
1960	}
1961	$inner.background choices insert end \
1962	"black" "black" \
1963	"white" "white" \
1964	"grey" "grey"
1965
1966	$itk_component(background) value "white"
1967	bind $inner.background <<Value>> \
1968	[itcl::code $this AdjustSetting -background]
1969
1970	itk_component add opacity_l {
1971	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1972	} {
1973	ignore -font
1974	}
1975	itk_component add opacity {
1976	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1977	-variable [itcl::scope _settings(-opacity)] \
1978	-showvalue off \
1979	-command [itcl::code $this AdjustSetting -opacity]
1980	}
1981	itk_component add scale_l {
1982	label $inner.scale_l -text "Scale" -font "Arial 9"
1983	} {
1984	ignore -font
1985	}
1986	itk_component add scale {
1987	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1988	-variable [itcl::scope _settings(-heightmapscale)] \
1989	-showvalue off \
1990	-command [itcl::code $this AdjustSetting -heightmapscale]
1991	}
1992	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1993	itk_component add numisolines {
1994	Rappture::Spinint $inner.numisolines \
1995	-min 0 -max 50 -font "arial 9"
1996	}
1997	$itk_component(numisolines) value $_settings(-numisolines)
1998	bind $itk_component(numisolines) <<Value>> \
1999	[itcl::code $this AdjustSetting -numisolines]
2000
2001	frame $inner.separator1 -height 2 -relief sunken -bd 1
2002	frame $inner.separator2 -height 2 -relief sunken -bd 1
2003
2004	blt::table $inner \
2005	0,0 $inner.field_l -anchor w -pady 2 \
2006	0,1 $inner.field -anchor w -pady 2 -fill x \
2007	1,0 $inner.colormap_l -anchor w -pady 2 \
2008	1,1 $inner.colormap -anchor w -pady 2 -fill x \
2009	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
2010	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
2011	3,0 $inner.background_l -anchor w -pady 2 \
2012	3,1 $inner.background -anchor w -pady 2 -fill x \
2013	4,0 $inner.numisolines_l -anchor w -pady 2 \
2014	4,1 $inner.numisolines -anchor w -pady 2 \
2015	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
2016	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
2017	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
2018	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
2019	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
2020	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
2021	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
2022	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
2023	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
2024	14,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
2025	15,0 $inner.opacity_l -anchor w -pady 2 \
2026	15,1 $inner.opacity -fill x -pady 2 \
2027	16,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
2028	16,1 $inner.scale -fill x -pady 2 -cspan 2 \
2029
2030	blt::table configure $inner r* c* -resize none
2031	blt::table configure $inner r17 c1 -resize expand
2032	}
2033
2034	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
2035
2036	set fg [option get $itk_component(hull) font Font]
2037	#set bfg [option get $itk_component(hull) boldFont Font]
2038
2039	set inner [$itk_component(main) insert end \
2040	-title "Axis Settings" \
2041	-icon [Rappture::icon axis2]]
2042	$inner configure -borderwidth 4
2043
2044	checkbutton $inner.visible \
2045	-text "Axes" \
2046	-variable [itcl::scope _settings(-axisvisible)] \
2047	-command [itcl::code $this AdjustSetting -axisvisible] \
2048	-font "Arial 9"
2049	checkbutton $inner.labels \
2050	-text "Axis Labels" \
2051	-variable [itcl::scope _settings(-axislabels)] \
2052	-command [itcl::code $this AdjustSetting -axislabels] \
2053	-font "Arial 9"
2054	label $inner.grid_l -text "Grid" -font "Arial 9"
2055	checkbutton $inner.xgrid \
2056	-text "X" \
2057	-variable [itcl::scope _settings(-xgrid)] \
2058	-command [itcl::code $this AdjustSetting -xgrid] \
2059	-font "Arial 9"
2060	checkbutton $inner.ygrid \
2061	-text "Y" \
2062	-variable [itcl::scope _settings(-ygrid)] \
2063	-command [itcl::code $this AdjustSetting -ygrid] \
2064	-font "Arial 9"
2065	checkbutton $inner.zgrid \
2066	-text "Z" \
2067	-variable [itcl::scope _settings(-zgrid)] \
2068	-command [itcl::code $this AdjustSetting -zgrid] \
2069	-font "Arial 9"
2070	checkbutton $inner.minorticks \
2071	-text "Minor Ticks" \
2072	-variable [itcl::scope _settings(-axisminorticks)] \
2073	-command [itcl::code $this AdjustSetting -axisminorticks] \
2074	-font "Arial 9"
2075
2076	label $inner.mode_l -text "Mode" -font "Arial 9"
2077
2078	itk_component add axisflymode {
2079	Rappture::Combobox $inner.mode -width 10 -editable no
2080	}
2081	$inner.mode choices insert end \
2082	"static_triad" "static" \
2083	"closest_triad" "closest" \
2084	"furthest_triad" "farthest" \
2085	"outer_edges" "outer"
2086	$itk_component(axisflymode) value $_settings(-axisflymode)
2087	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
2088
2089	blt::table $inner \
2090	0,0 $inner.visible -anchor w -cspan 4 \
2091	1,0 $inner.labels -anchor w -cspan 4 \
2092	2,0 $inner.minorticks -anchor w -cspan 4 \
2093	4,0 $inner.grid_l -anchor w \
2094	4,1 $inner.xgrid -anchor w \
2095	4,2 $inner.ygrid -anchor w \
2096	4,3 $inner.zgrid -anchor w \
2097	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2098	5,1 $inner.mode -fill x -cspan 3
2099
2100	blt::table configure $inner r* c* -resize none
2101	blt::table configure $inner r7 c6 -resize expand
2102	blt::table configure $inner r3 -height 0.125i
2103	}
2104
2105	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2106	set inner [$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	blt::table configure $inner r0 -resize none
2124
2125	set labels { qx qy qz qw xpan ypan zoom }
2126	set row 1
2127	foreach tag $labels {
2128	label $inner.${tag}label -text $tag -font "Arial 9"
2129	entry $inner.${tag} -font "Arial 9" -bg white \
2130	-textvariable [itcl::scope _view(-$tag)]
2131	bind $inner.${tag} <Return> \
2132	[itcl::code $this camera set -${tag}]
2133	bind $inner.${tag} <KP_Enter> \
2134	[itcl::code $this camera set -${tag}]
2135	blt::table $inner \
2136	$row,0 $inner.${tag}label -anchor e -pady 2 \
2137	$row,1 $inner.${tag} -anchor w -pady 2
2138	blt::table configure $inner r$row -resize none
2139	incr row
2140	}
2141	checkbutton $inner.ortho \
2142	-text "Orthographic Projection" \
2143	-variable [itcl::scope _view(-ortho)] \
2144	-command [itcl::code $this camera set -ortho] \
2145	-font "Arial 9"
2146	blt::table $inner \
2147	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2148	blt::table configure $inner r$row -resize none
2149	incr row
2150
2151	blt::table configure $inner c* -resize none
2152	blt::table configure $inner c2 -resize expand
2153	blt::table configure $inner r$row -resize expand
2154	}
2155
2156	#
2157	# camera --
2158	#
2159	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2160	switch -- $option {
2161	"show" {
2162	puts [array get _view]
2163	}
2164	"set" {
2165	set what [lindex $args 0]
2166	set x $_view($what)
2167	set code [catch { string is double $x } result]
2168	if { $code != 0 \|\| !$result } {
2169	return
2170	}
2171	switch -- $what {
2172	"-ortho" {
2173	if {$_view($what)} {
2174	SendCmd "camera mode ortho"
2175	} else {
2176	SendCmd "camera mode persp"
2177	}
2178	}
2179	"-xpan" - "-ypan" {
2180	PanCamera
2181	}
2182	"-qx" - "-qy" - "-qz" - "-qw" {
2183	set q [ViewToQuaternion]
2184	$_arcball quaternion $q
2185	EventuallyRotate $q
2186	}
2187	"-zoom" {
2188	SendCmd "camera zoom $_view($what)"
2189	}
2190	}
2191	}
2192	}
2193	}
2194
2195	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2196	set bytes ""
2197	foreach dataobj [get] {
2198	foreach comp [$dataobj components] {
2199	set tag $dataobj-$comp
2200	set contents [$dataobj vtkdata $comp]
2201	append bytes "$contents\n"
2202	}
2203	}
2204	return [list .vtk $bytes]
2205	}
2206
2207	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2208	if { [image width $_image(download)] > 0 &&
2209	[image height $_image(download)] > 0 } {
2210	set bytes [$_image(download) data -format "jpeg -quality 100"]
2211	set bytes [Rappture::encoding::decode -as b64 $bytes]
2212	return [list .jpg $bytes]
2213	}
2214	return ""
2215	}
2216
2217	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2218	Rappture::Balloon $popup \
2219	-title "[Rappture::filexfer::label downloadWord] as..."
2220	set inner [$popup component inner]
2221	label $inner.summary -text "" -anchor w
2222	radiobutton $inner.vtk_button -text "VTK data file" \
2223	-variable [itcl::scope _downloadPopup(format)] \
2224	-font "Arial 9 " \
2225	-value vtk
2226	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2227	radiobutton $inner.image_button -text "Image File" \
2228	-variable [itcl::scope _downloadPopup(format)] \
2229	-font "Arial 9 " \
2230	-value image
2231	Rappture::Tooltip::for $inner.image_button \
2232	"Save as digital image."
2233
2234	button $inner.ok -text "Save" \
2235	-highlightthickness 0 -pady 2 -padx 3 \
2236	-command $command \
2237	-compound left \
2238	-image [Rappture::icon download]
2239
2240	button $inner.cancel -text "Cancel" \
2241	-highlightthickness 0 -pady 2 -padx 3 \
2242	-command [list $popup deactivate] \
2243	-compound left \
2244	-image [Rappture::icon cancel]
2245
2246	blt::table $inner \
2247	0,0 $inner.summary -cspan 2 \
2248	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2249	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2250	4,1 $inner.cancel -width .9i -fill y \
2251	4,0 $inner.ok -padx 2 -width .9i -fill y
2252	blt::table configure $inner r3 -height 4
2253	blt::table configure $inner r4 -pady 4
2254	raise $inner.image_button
2255	$inner.vtk_button invoke
2256	return $inner
2257	}
2258
2259	#
2260	# SetObjectStyle --
2261	#
2262	# Set the style of the heightmap/contour object. This gets calls
2263	# for each dataset once as it is loaded. It can overridden by
2264	# the user controls.
2265	#
2266	#
2267	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2268	# Parse style string.
2269	set tag $dataobj-$comp
2270	array set style {
2271	-color BCGYR
2272	-levels 10
2273	-opacity 1.0
2274	}
2275	set stylelist [$dataobj style $comp]
2276	if { $stylelist != "" } {
2277	array set style $stylelist
2278	}
2279	# This is too complicated. We want to set the colormap, number of
2280	# isolines and opacity for the dataset. They can be the default values,
2281	# the style hints loaded with the dataset, or set by user controls. As
2282	# datasets get loaded, they first use the defaults that are overidden
2283	# by the style hints. If the user changes the global controls, then that
2284	# overrides everything else. I don't know what it means when global
2285	# controls are specified as style hints by each dataset. It complicates
2286	# the code to handle aberrant cases.
2287
2288	if { $_changed(-opacity) } {
2289	set style(-opacity) [expr $_settings(-opacity) * 0.01]
2290	}
2291	if { $_changed(-numisolines) } {
2292	set style(-levels) $_settings(-numisolines)
2293	}
2294	if { $_changed(-colormap) } {
2295	set style(-color) $_settings(-colormap)
2296	}
2297	if { $_currentColormap == "" } {
2298	$itk_component(colormap) value $style(-color)
2299	}
2300	if { [info exists style(-stretchtofit)] } {
2301	set _settings(-stretchtofit) $style(-stretchtofit)
2302	AdjustSetting -stretchtofit
2303	}
2304	if { $_currentNumIsolines != $style(-levels) } {
2305	set _currentNumIsolines $style(-levels)
2306	set _settings(-numisolines) $_currentNumIsolines
2307	$itk_component(numisolines) value $_currentNumIsolines
2308	UpdateContourList
2309	DrawLegend
2310	}
2311	SendCmd "outline add $tag"
2312	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2313	SendCmd "outline visible $_settings(-outline) $tag"
2314	set scale [GetHeightmapScale]
2315	SendCmd "[list heightmap add contourlist $_contourList $scale $tag]"
2316	set _comp2scale($tag) $_settings(-heightmapscale)
2317	SendCmd "heightmap edges $_settings(-edges) $tag"
2318	SendCmd "heightmap wireframe $_settings(-wireframe) $tag"
2319	SetCurrentColormap $style(-color)
2320	set color [$itk_component(isolinecolor) value]
2321	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2322	SendCmd "heightmap lighting $_settings(-isheightmap) $tag"
2323	SendCmd "heightmap isolines $_settings(-isolinesvisible) $tag"
2324	SendCmd "heightmap surface $_settings(-colormapvisible) $tag"
2325	SendCmd "heightmap opacity $style(-opacity) $tag"
2326	set _settings(-opacity) [expr $style(-opacity) * 100.0]
2327	}
2328
2329	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2330	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2331	return 0
2332	}
2333	return 1
2334	}
2335
2336	# ----------------------------------------------------------------------
2337	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2338	#
2339	# Invoked automatically whenever the "legend" command comes in from
2340	# the rendering server. Indicates that binary image data with the
2341	# specified <size> will follow.
2342	# ----------------------------------------------------------------------
2343	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2344	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2345	if { [isconnected] } {
2346	set bytes [ReceiveBytes $size]
2347	if { ![info exists _image(legend)] } {
2348	set _image(legend) [image create photo]
2349	}
2350	$_image(legend) configure -data $bytes
2351	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2352	if { [catch {DrawLegend} errs] != 0 } {
2353	global errorInfo
2354	puts stderr "errs=$errs errorInfo=$errorInfo"
2355	}
2356	}
2357	}
2358
2359	#
2360	# DrawLegend --
2361	#
2362	# Draws the legend in the own canvas on the right side of the plot area.
2363	#
2364	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2365	set fname $_curFldName
2366	set c $itk_component(view)
2367	set w [winfo width $c]
2368	set h [winfo height $c]
2369	set font "Arial 8"
2370	set lineht [font metrics $font -linespace]
2371
2372	if { [string match "component*" $fname] } {
2373	set title ""
2374	} else {
2375	if { [info exists _fields($fname)] } {
2376	foreach { title units } $_fields($fname) break
2377	if { $units != "" } {
2378	set title [format "%s (%s)" $title $units]
2379	}
2380	} else {
2381	set title $fname
2382	}
2383	}
2384	set x [expr $w - 2]
2385	if { !$_settings(-legendvisible) } {
2386	$c delete legend
2387	return
2388	}
2389	if { [$c find withtag "legend"] == "" } {
2390	set y 2
2391	# If there's a legend title, create a text item for the title.
2392	$c create text $x $y \
2393	-anchor ne \
2394	-fill $itk_option(-plotforeground) -tags "title legend" \
2395	-font $font
2396	if { $title != "" } {
2397	incr y $lineht
2398	}
2399	$c create text $x $y \
2400	-anchor ne \
2401	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2402	-font $font
2403	incr y $lineht
2404	$c create image $x $y \
2405	-anchor ne \
2406	-image $_image(legend) -tags "colormap legend"
2407	$c create rectangle $x $y 1 1 \
2408	-fill "" -outline "" -tags "sensor legend"
2409	$c create text $x [expr {$h-2}] \
2410	-anchor se \
2411	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2412	-font $font
2413	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2414	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2415	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2416	}
2417	$c delete isoline
2418	set x2 $x
2419	set iw [image width $_image(legend)]
2420	set ih [image height $_image(legend)]
2421	set x1 [expr $x2 - ($iw*12)/10]
2422	set color [$itk_component(isolinecolor) value]
2423
2424	# Draw the isolines on the legend.
2425	array unset _isolines
2426	if { $color != "none" && [info exists _limits($_curFldName)] &&
2427	$_settings(-isolinesvisible) && $_currentNumIsolines > 0 } {
2428
2429	foreach { vmin vmax } $_limits($_curFldName) break
2430	set range [expr double($vmax - $vmin)]
2431	if { $range <= 0.0 } {
2432	set range 1.0; # Min is greater or equal to max.
2433	}
2434	set tags "isoline legend"
2435	set offset [expr 2 + $lineht]
2436	if { $title != "" } {
2437	incr offset $lineht
2438	}
2439	foreach value $_contourList {
2440	set norm [expr 1.0 - (($value - $vmin) / $range)]
2441	set y1 [expr int(round(($norm * $ih) + $offset))]
2442	for { set off 0 } { $off < 3 } { incr off } {
2443	set _isolines([expr $y1 + $off]) $value
2444	set _isolines([expr $y1 - $off]) $value
2445	}
2446	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2447	}
2448	}
2449
2450	$c bind title <ButtonPress> [itcl::code $this Combo post]
2451	$c bind title <Enter> [itcl::code $this Combo activate]
2452	$c bind title <Leave> [itcl::code $this Combo deactivate]
2453	# Reset the item coordinates according the current size of the plot.
2454	if { [info exists _limits($_curFldName)] } {
2455	foreach { vmin vmax } $_limits($_curFldName) break
2456	$c itemconfigure vmin -text [format %g $vmin]
2457	$c itemconfigure vmax -text [format %g $vmax]
2458	}
2459	set y 2
2460	# If there's a legend title, move the title to the correct position
2461	if { $title != "" } {
2462	$c itemconfigure title -text $title
2463	$c coords title $x $y
2464	incr y $lineht
2465	}
2466	$c coords vmax $x $y
2467	incr y $lineht
2468	$c coords colormap $x $y
2469	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2470	$c raise sensor
2471	$c coords vmin $x [expr {$h - 2}]
2472	}
2473
2474	#
2475	# EnterLegend --
2476	#
2477	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2478	SetLegendTip $x $y
2479	}
2480
2481	#
2482	# MotionLegend --
2483	#
2484	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2485	Rappture::Tooltip::tooltip cancel
2486	set c $itk_component(view)
2487	set cw [winfo width $c]
2488	set ch [winfo height $c]
2489	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2490	SetLegendTip $x $y
2491	}
2492	}
2493
2494	#
2495	# LeaveLegend --
2496	#
2497	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2498	Rappture::Tooltip::tooltip cancel
2499	.rappturetooltip configure -icon ""
2500	}
2501
2502	#
2503	# SetLegendTip --
2504	#
2505	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2506	set fname $_curFldName
2507	set c $itk_component(view)
2508	set w [winfo width $c]
2509	set h [winfo height $c]
2510	set font "Arial 8"
2511	set lineht [font metrics $font -linespace]
2512
2513	set ih [image height $_image(legend)]
2514	# Subtract off the offset of the color ramp from the top of the canvas
2515	set iy [expr $y - ($lineht + 2)]
2516
2517	if { [string match "component*" $fname] } {
2518	set title ""
2519	} else {
2520	if { [info exists _fields($fname)] } {
2521	foreach { title units } $_fields($fname) break
2522	if { $units != "" } {
2523	set title [format "%s (%s)" $title $units]
2524	}
2525	} else {
2526	set title $fname
2527	}
2528	}
2529	# If there's a legend title, increase the offset by the line height.
2530	if { $title != "" } {
2531	incr iy -$lineht
2532	}
2533
2534	# Make a swatch of the selected color
2535	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2536	return
2537	}
2538
2539	if { ![info exists _image(swatch)] } {
2540	set _image(swatch) [image create photo -width 24 -height 24]
2541	}
2542	set color [eval format "\#%02x%02x%02x" $pixel]
2543	$_image(swatch) put black -to 0 0 23 23
2544	$_image(swatch) put $color -to 1 1 22 22
2545
2546	# Compute the value of the point
2547	if { [info exists _limits($fname)] } {
2548	foreach { vmin vmax } $_limits($fname) break
2549	set t [expr 1.0 - (double($iy) / double($ih-1))]
2550	set value [expr $t * ($vmax - $vmin) + $vmin]
2551	} else {
2552	set value 0.0
2553	}
2554	set tipx [expr $x + 15]
2555	set tipy [expr $y - 5]
2556	.rappturetooltip configure -icon $_image(swatch)
2557	if { [info exists _isolines($y)] } {
2558	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2559	} else {
2560	Rappture::Tooltip::text $c [format "$title %g" $value]
2561	}
2562	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2563	}
2564
2565	# ----------------------------------------------------------------------
2566	# USAGE: _dropdown post
2567	# USAGE: _dropdown unpost
2568	# USAGE: _dropdown select
2569	#
2570	# Used internally to handle the dropdown list for this combobox. The
2571	# post/unpost options are invoked when the list is posted or unposted
2572	# to manage the relief of the controlling button. The select option
2573	# is invoked whenever there is a selection from the list, to assign
2574	# the value back to the gauge.
2575	# ----------------------------------------------------------------------
2576	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2577	set c $itk_component(view)
2578	switch -- $option {
2579	post {
2580	foreach { x1 y1 x2 y2 } [$c bbox title] break
2581	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2582	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2583	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2584	tk_popup $itk_component(fieldmenu) $x $y
2585	}
2586	activate {
2587	$c itemconfigure title -fill red
2588	}
2589	deactivate {
2590	$c itemconfigure title -fill $itk_option(-plotforeground)
2591	}
2592	invoke {
2593	$itk_component(field) value $_curFldLabel
2594	AdjustSetting -field
2595	}
2596	default {
2597	error "bad option \"$option\": should be post, unpost, select"
2598	}
2599	}
2600	}
2601
2602	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2603	if { $_settings(-isheightmap) } {
2604	set val $_settings(-heightmapscale)
2605	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2606	return $sval
2607	}
2608	return 0
2609	}
2610
2611	itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2612	array set positions {
2613	front "0.707107 0.707107 0 0"
2614	back "0 0 0.707107 0.707107"
2615	left "0.5 0.5 -0.5 -0.5"
2616	right "0.5 0.5 0.5 0.5"
2617	top "1 0 0 0"
2618	bottom "0 1 0 0"
2619	}
2620	foreach name { -qw -qx -qy -qz } value $positions($side) {
2621	set _view($name) $value
2622	}
2623	set q [ViewToQuaternion]
2624	$_arcball quaternion $q
2625	SendCmd "camera orient $q"
2626	SendCmd "camera reset"
2627	set _view(-xpan) 0
2628	set _view(-ypan) 0
2629	set _view(-zoom) 1.0
2630	}
2631
2632	itcl::body Rappture::VtkHeightmapViewer::UpdateContourList {} {
2633	if {$_currentNumIsolines == 0} {
2634	set _contourList ""
2635	return
2636	}
2637	if { ![info exists _limits($_curFldName)] } {
2638	return
2639	}
2640	foreach { vmin vmax } $_limits($_curFldName) break
2641	set v [blt::vector create \#auto]
2642	$v seq $vmin $vmax [expr $_currentNumIsolines+2]
2643	$v delete end 0
2644	set _contourList [$v range 0 end]
2645	blt::vector destroy $v
2646	}

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