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source: branches/1.7/gui/scripts/vtkheightmapviewer.tcl @ 6266

Last change on this file since 6266 was 6266, checked in by ldelgass, 8 years ago
merge r6265 from 1.6 branch
File size: 89.7 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 Vtkvis server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2016 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 { args } {
43	Rappture::VisViewer::constructor
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	private variable _width 0
146	private variable _height 0
147	private variable _legendWidth 0
148	private variable _legendHeight 0
149	private variable _resizePending 0
150	private variable _legendPending 0
151	private variable _rotatePending 0
152	private variable _fields
153	private variable _curFldName ""
154	private variable _curFldLabel ""
155	private variable _colorMode "scalar"; # Mode of colormap (vmag or scalar)
156
157	private common _downloadPopup; # download options from popup
158	private common _hardcopy
159	}
160
161	itk::usual VtkHeightmapViewer {
162	keep -background -foreground -cursor -font
163	keep -plotbackground -plotforeground -mode
164	}
165
166	# ----------------------------------------------------------------------
167	# CONSTRUCTOR
168	# ----------------------------------------------------------------------
169	itcl::body Rappture::VtkHeightmapViewer::constructor {args} {
170	set _serverType "vtkvis"
171
172	#DebugOn
173	EnableWaitDialog 900
174
175	# Rebuild event
176	$_dispatcher register !rebuild
177	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
178
179	# Resize event
180	$_dispatcher register !resize
181	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
182
183	# Legend event
184	$_dispatcher register !legend
185	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
186
187	# Rotate event
188	$_dispatcher register !rotate
189	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
190
191	#
192	# Populate parser with commands handle incoming requests
193	#
194	$_parser alias image [itcl::code $this ReceiveImage]
195	$_parser alias legend [itcl::code $this ReceiveLegend]
196	$_parser alias dataset [itcl::code $this ReceiveDataset]
197
198	# Create image for legend colorbar.
199	set _image(legend) [image create photo]
200
201	# Initialize the view to some default parameters.
202	array set _view {
203	-ortho 0
204	-qw 0.36
205	-qx 0.25
206	-qy 0.50
207	-qz 0.70
208	-xpan 0
209	-ypan 0
210	-zoom 1.0
211	}
212	set _arcball [blt::arcball create 100 100]
213	$_arcball quaternion [ViewToQuaternion]
214
215	array set _settings {
216	-axisflymode "static"
217	-axislabels 1
218	-axisminorticks 1
219	-axisvisible 1
220	-colormap BCGYR
221	-colormapdiscrete 0
222	-colormapvisible 1
223	-edges 0
224	-field "Default"
225	-heightmapscale 50
226	-isheightmap 0
227	-isolinecolor black
228	-isolinesvisible 1
229	-legendvisible 1
230	-lighting 1
231	-numisolines 10
232	-opacity 100
233	-outline 0
234	-savelighting 1
235	-saveopacity 100
236	-saveoutline 0
237	-stretchtofit 0
238	-wireframe 0
239	-xgrid 0
240	-ygrid 0
241	-zgrid 0
242	}
243	array set _changed {
244	-colormap 0
245	-numisolines 0
246	-opacity 0
247	}
248	itk_component add view {
249	canvas $itk_component(plotarea).view \
250	-highlightthickness 0 -borderwidth 0
251	} {
252	usual
253	ignore -highlightthickness -borderwidth -background
254	}
255
256	itk_component add fieldmenu {
257	menu $itk_component(plotarea).menu \
258	-relief flat \
259	-tearoff 0
260	} {
261	usual
262	ignore -background -foreground -relief -tearoff
263	}
264	set c $itk_component(view)
265	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
266	bind $c <Control-F1> [itcl::code $this ToggleConsole]
267
268	# Fix the scrollregion in case we go off screen
269	$c configure -scrollregion [$c bbox all]
270
271	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
272	set _map(cwidth) -1
273	set _map(cheight) -1
274	set _map(zoom) 1.0
275	set _map(original) ""
276
277	set f [$itk_component(main) component controls]
278	itk_component add reset {
279	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
280	-highlightthickness 0 \
281	-image [Rappture::icon reset-view] \
282	-command [itcl::code $this CameraReset]
283	} {
284	usual
285	ignore -highlightthickness
286	}
287	pack $itk_component(reset) -side top -padx 2 -pady { 2 0 }
288	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
289
290	itk_component add zoomin {
291	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
292	-highlightthickness 0 \
293	-image [Rappture::icon zoom-in] \
294	-command [itcl::code $this Zoom in]
295	} {
296	usual
297	ignore -highlightthickness
298	}
299	pack $itk_component(zoomin) -side top -padx 2 -pady { 2 0 }
300	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
301
302	itk_component add zoomout {
303	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
304	-highlightthickness 0 \
305	-image [Rappture::icon zoom-out] \
306	-command [itcl::code $this Zoom out]
307	} {
308	usual
309	ignore -highlightthickness
310	}
311	pack $itk_component(zoomout) -side top -padx 2 -pady { 2 0 }
312	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
313
314	itk_component add mode {
315	Rappture::PushButton $f.mode \
316	-onimage [Rappture::icon surface] \
317	-offimage [Rappture::icon surface] \
318	-variable [itcl::scope _settings(-isheightmap)] \
319	-command [itcl::code $this AdjustSetting -isheightmap] \
320	}
321	Rappture::Tooltip::for $itk_component(mode) \
322	"Toggle the surface/contour on/off"
323	pack $itk_component(mode) -padx 2 -pady { 2 0 }
324
325	itk_component add stretchtofit {
326	Rappture::PushButton $f.stretchtofit \
327	-onimage [Rappture::icon stretchtofit] \
328	-offimage [Rappture::icon stretchtofit] \
329	-variable [itcl::scope _settings(-stretchtofit)] \
330	-command [itcl::code $this AdjustSetting -stretchtofit] \
331	}
332	Rappture::Tooltip::for $itk_component(stretchtofit) \
333	"Stretch plot to fit window on/off"
334	pack $itk_component(stretchtofit) -padx 2 -pady 2
335
336	if { [catch {
337	BuildContourTab
338	BuildAxisTab
339	BuildCameraTab
340	} errs] != 0 } {
341	global errorInfo
342	puts stderr "errs=$errs errorInfo=$errorInfo"
343	}
344
345	# Hack around the Tk panewindow. The problem is that the requested
346	# size of the 3d view isn't set until an image is retrieved from
347	# the server. So the panewindow uses the tiny size.
348	set w 10000
349	pack forget $itk_component(view)
350	blt::table $itk_component(plotarea) \
351	0,0 $itk_component(view) -fill both -reqwidth $w
352	blt::table configure $itk_component(plotarea) c1 -resize none
353
354	# Bindings for panning via mouse
355	bind $itk_component(view) <ButtonPress-2> \
356	[itcl::code $this Pan click %x %y]
357	bind $itk_component(view) <B2-Motion> \
358	[itcl::code $this Pan drag %x %y]
359	bind $itk_component(view) <ButtonRelease-2> \
360	[itcl::code $this Pan release %x %y]
361
362	#bind $itk_component(view) <ButtonRelease-3> \
363	# [itcl::code $this Pick %x %y]
364
365	# Bindings for panning via keyboard
366	bind $itk_component(view) <KeyPress-Left> \
367	[itcl::code $this Pan set -10 0]
368	bind $itk_component(view) <KeyPress-Right> \
369	[itcl::code $this Pan set 10 0]
370	bind $itk_component(view) <KeyPress-Up> \
371	[itcl::code $this Pan set 0 -10]
372	bind $itk_component(view) <KeyPress-Down> \
373	[itcl::code $this Pan set 0 10]
374	bind $itk_component(view) <Shift-KeyPress-Left> \
375	[itcl::code $this Pan set -2 0]
376	bind $itk_component(view) <Shift-KeyPress-Right> \
377	[itcl::code $this Pan set 2 0]
378	bind $itk_component(view) <Shift-KeyPress-Up> \
379	[itcl::code $this Pan set 0 -2]
380	bind $itk_component(view) <Shift-KeyPress-Down> \
381	[itcl::code $this Pan set 0 2]
382
383	# Bindings for zoom via keyboard
384	bind $itk_component(view) <KeyPress-Prior> \
385	[itcl::code $this Zoom out]
386	bind $itk_component(view) <KeyPress-Next> \
387	[itcl::code $this Zoom in]
388
389	bind $itk_component(view) <Enter> "focus $itk_component(view)"
390
391	if {[string equal "x11" [tk windowingsystem]]} {
392	# Bindings for zoom via mouse
393	bind $itk_component(view) <4> [itcl::code $this Zoom out]
394	bind $itk_component(view) <5> [itcl::code $this Zoom in]
395	}
396
397	set _image(download) [image create photo]
398	eval itk_initialize $args
399	Connect
400	}
401
402	# ----------------------------------------------------------------------
403	# DESTRUCTOR
404	# ----------------------------------------------------------------------
405	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
406	Disconnect
407	image delete $_image(plot)
408	image delete $_image(download)
409	catch { blt::arcball destroy $_arcball }
410	}
411
412	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
413	if { $_width < 2 } {
414	set _width 500
415	}
416	if { $_height < 2 } {
417	set _height 500
418	}
419	set _start [clock clicks -milliseconds]
420	SendCmd "screen size [expr $_width - 20] $_height"
421
422	set font "Arial 8"
423	set lh [font metrics $font -linespace]
424	set h [expr {$_height - 2 * ($lh + 2)}]
425	if { $h != $_legendHeight } {
426	EventuallyRequestLegend
427	} else {
428	DrawLegend
429	}
430	set _resizePending 0
431	}
432
433	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
434	SendCmd "camera orient [ViewToQuaternion]"
435	set _rotatePending 0
436	}
437
438	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
439	if { !$_legendPending } {
440	set _legendPending 1
441	$_dispatcher event -idle !legend
442	}
443	}
444
445	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
446	set _width $w
447	set _height $h
448	$_arcball resize $w $h
449	if { !$_resizePending } {
450	set _resizePending 1
451	$_dispatcher event -after 250 !resize
452	}
453	}
454
455	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
456	QuaternionToView $q
457	if { !$_rotatePending } {
458	set _rotatePending 1
459	$_dispatcher event -after 100 !rotate
460	}
461	}
462
463	# ----------------------------------------------------------------------
464	# USAGE: add <dataobj> ?<settings>?
465	#
466	# Clients use this to add a data object to the plot. The optional
467	# <settings> are used to configure the plot. Allowed settings are
468	# -color, -brightness, -width, -linestyle, and -raise.
469	# ----------------------------------------------------------------------
470	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
471	if { ![$dataobj isvalid] } {
472	return; # Object doesn't contain valid data.
473	}
474	array set params {
475	-color auto
476	-width 1
477	-linestyle solid
478	-brightness 0
479	-raise 0
480	-description ""
481	-param ""
482	-type ""
483	}
484	array set params $settings
485	set params(-description) ""
486	set params(-param) ""
487	array set params $settings
488
489	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
490	# can't handle -autocolors yet
491	set params(-color) white
492	}
493	set pos [lsearch -exact $_dlist $dataobj]
494	if {$pos < 0} {
495	lappend _dlist $dataobj
496	}
497	set _obj2ovride($dataobj-color) $params(-color)
498	set _obj2ovride($dataobj-width) $params(-width)
499	set _obj2ovride($dataobj-raise) $params(-raise)
500	$_dispatcher event -idle !rebuild
501	}
502
503
504	# ----------------------------------------------------------------------
505	# USAGE: delete ?<dataobj1> <dataobj2> ...?
506	#
507	# Clients use this to delete a dataobj from the plot. If no dataobjs
508	# are specified, then all dataobjs are deleted. No data objects are
509	# deleted. They are only removed from the display list.
510	# ----------------------------------------------------------------------
511	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
512	if { [llength $args] == 0} {
513	set args $_dlist
514	}
515	# Delete all specified dataobjs
516	set changed 0
517	foreach dataobj $args {
518	set pos [lsearch -exact $_dlist $dataobj]
519	if { $pos < 0 } {
520	continue; # Don't know anything about it.
521	}
522	# Remove it from the dataobj list.
523	set _dlist [lreplace $_dlist $pos $pos]
524	array unset _obj2ovride $dataobj-*
525	array unset _settings $dataobj-*
526	set changed 1
527	}
528	# If anything changed, then rebuild the plot
529	if { $changed } {
530	$_dispatcher event -idle !rebuild
531	}
532	}
533
534	# ----------------------------------------------------------------------
535	# USAGE: get ?-objects?
536	# USAGE: get ?-visible?
537	# USAGE: get ?-image view?
538	#
539	# Clients use this to query the list of objects being plotted, in
540	# order from bottom to top of this result. The optional "-image"
541	# flag can also request the internal images being shown.
542	# ----------------------------------------------------------------------
543	itcl::body Rappture::VtkHeightmapViewer::get {args} {
544	if {[llength $args] == 0} {
545	set args "-objects"
546	}
547	set op [lindex $args 0]
548	switch -- $op {
549	"-objects" {
550	# put the dataobj list in order according to -raise options
551	set dlist {}
552	foreach dataobj $_dlist {
553	if { ![IsValidObject $dataobj] } {
554	continue
555	}
556	if {[info exists _obj2ovride($dataobj-raise)] &&
557	$_obj2ovride($dataobj-raise)} {
558	set dlist [linsert $dlist 0 $dataobj]
559	} else {
560	lappend dlist $dataobj
561	}
562	}
563	return $dlist
564	}
565	"-visible" {
566	set dlist {}
567	foreach dataobj $_dlist {
568	if { ![IsValidObject $dataobj] } {
569	continue
570	}
571	if { ![info exists _obj2ovride($dataobj-raise)] } {
572	# No setting indicates that the object isn't visible.
573	continue
574	}
575	# Otherwise use the -raise parameter to put the object to
576	# the front of the list.
577	if { $_obj2ovride($dataobj-raise) } {
578	set dlist [linsert $dlist 0 $dataobj]
579	} else {
580	lappend dlist $dataobj
581	}
582	}
583	return $dlist
584	}
585	-image {
586	if {[llength $args] != 2} {
587	error "wrong # args: should be \"get -image view\""
588	}
589	switch -- [lindex $args end] {
590	view {
591	return $_image(plot)
592	}
593	default {
594	error "bad image name \"[lindex $args end]\": should be view"
595	}
596	}
597	}
598	default {
599	error "bad option \"$op\": should be -objects or -image"
600	}
601	}
602	}
603
604	#
605	# scale --
606	#
607	# This gets called either incrementally as new simulations are
608	# added or all at once as a sequence of heightmaps.
609	# This accounts for all objects--even those not showing on the
610	# screen. Because of this, the limits are appropriate for all
611	# objects as the user scans through data in the ResultSet viewer.
612	#
613	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
614	foreach dataobj $args {
615	if { ![$dataobj isvalid] } {
616	continue; # Object doesn't contain valid data.
617	}
618	foreach axis { x y } {
619	set units [$dataobj hints ${axis}units]
620	set found($units) 1
621	set lim [$dataobj limits $axis]
622	if { ![info exists _limits($axis)] } {
623	set _limits($axis) $lim
624	continue
625	}
626	foreach {min max} $lim break
627	foreach {amin amax} $_limits($axis) break
628	if { $amin > $min } {
629	set amin $min
630	}
631	if { $amax < $max } {
632	set amax $max
633	}
634	set _limits($axis) [list $amin $amax]
635	}
636	foreach { fname lim } [$dataobj fieldlimits] {
637	if { ![info exists _limits($fname)] } {
638	set _limits($fname) $lim
639	continue
640	}
641	foreach {min max} $lim break
642	foreach {fmin fmax} $_limits($fname) break
643	if { $fmin > $min } {
644	set fmin $min
645	}
646	if { $fmax < $max } {
647	set fmax $max
648	}
649	set _limits($fname) [list $fmin $fmax]
650	}
651	}
652	if { [array size found] > 1 } {
653	set _settings(-stretchtofit) 1
654	} else {
655	# Check if the range of the x and y axes requires that we stretch
656	# the contour to fit the plotting area. This can happen when the
657	# x and y scales differ greatly (> 100x)
658	foreach {xmin xmax} $_limits(x) break
659	foreach {ymin ymax} $_limits(y) break
660	if { (($xmax - $xmin) > (($ymax -$ymin) * $_maxScale)) \|\|
661	((($xmax - $xmin) * $_maxScale) < ($ymax -$ymin)) } {
662	set _settings(-stretchtofit) 1
663	}
664	}
665	}
666
667	# ----------------------------------------------------------------------
668	# USAGE: download coming
669	# USAGE: download controls <downloadCommand>
670	# USAGE: download now
671	#
672	# Clients use this method to create a downloadable representation
673	# of the plot. Returns a list of the form {ext string}, where
674	# "ext" is the file extension (indicating the type of data) and
675	# "string" is the data itself.
676	# ----------------------------------------------------------------------
677	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
678	switch $option {
679	coming {
680	if {[catch {
681	blt::winop snap $itk_component(plotarea) $_image(download)
682	}]} {
683	$_image(download) configure -width 1 -height 1
684	$_image(download) put #000000
685	}
686	}
687	controls {
688	set popup .vtkviewerdownload
689	if { ![winfo exists .vtkviewerdownload] } {
690	set inner [BuildDownloadPopup $popup [lindex $args 0]]
691	} else {
692	set inner [$popup component inner]
693	}
694	set _downloadPopup(image_controls) $inner.image_frame
695	set num [llength [get]]
696	set num [expr {($num == 1) ? "1 result" : "$num results"}]
697	set word [Rappture::filexfer::label downloadWord]
698	$inner.summary configure -text "$word $num in the following format:"
699	update idletasks ;# Fix initial sizes
700	return $popup
701	}
702	now {
703	set popup .vtkviewerdownload
704	if {[winfo exists .vtkviewerdownload]} {
705	$popup deactivate
706	}
707	switch -- $_downloadPopup(format) {
708	"image" {
709	return [$this GetImage [lindex $args 0]]
710	}
711	"vtk" {
712	return [$this GetVtkData [lindex $args 0]]
713	}
714	}
715	return ""
716	}
717	default {
718	error "bad option \"$option\": should be coming, controls, now"
719	}
720	}
721	}
722
723	# ----------------------------------------------------------------------
724	# USAGE: Connect ?<host:port>,<host:port>...?
725	#
726	# Clients use this method to establish a connection to a new
727	# server, or to reestablish a connection to the previous server.
728	# Any existing connection is automatically closed.
729	# ----------------------------------------------------------------------
730	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
731	global readyForNextFrame
732	set readyForNextFrame 1
733	set _hosts [GetServerList "vtkvis"]
734	if { "" == $_hosts } {
735	return 0
736	}
737	set _reset 1
738	set result [VisViewer::Connect $_hosts]
739	if { $result } {
740	if { $_reportClientInfo } {
741	# Tell the server the viewer, hub, user and session.
742	# Do this immediately on connect before buffering any commands
743	global env
744
745	set info {}
746	set user "???"
747	if { [info exists env(USER)] } {
748	set user $env(USER)
749	}
750	set session "???"
751	if { [info exists env(SESSION)] } {
752	set session $env(SESSION)
753	}
754	lappend info "version" "$Rappture::version"
755	lappend info "build" "$Rappture::build"
756	lappend info "svnurl" "$Rappture::svnurl"
757	lappend info "installdir" "$Rappture::installdir"
758	lappend info "hub" [exec hostname]
759	lappend info "client" "vtkheightmapviewer"
760	lappend info "user" $user
761	lappend info "session" $session
762	SendCmd "clientinfo [list $info]"
763	}
764	set w [winfo width $itk_component(view)]
765	set h [winfo height $itk_component(view)]
766	EventuallyResize $w $h
767	}
768	return $result
769	}
770
771	#
772	# isconnected --
773	#
774	# Indicates if we are currently connected to the visualization server.
775	#
776	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
777	return [VisViewer::IsConnected]
778	}
779
780	#
781	# disconnect --
782	#
783	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
784	Disconnect
785	set _reset 1
786	}
787
788	#
789	# Disconnect --
790	#
791	# Clients use this method to disconnect from the current rendering server.
792	#
793	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
794	VisViewer::Disconnect
795
796	$_dispatcher cancel !rebuild
797	$_dispatcher cancel !resize
798	$_dispatcher cancel !rotate
799	$_dispatcher cancel !legend
800	# disconnected -- no more data sitting on server
801	array unset _datasets
802	array unset _colormaps
803	global readyForNextFrame
804	set readyForNextFrame 1
805	}
806
807	# ----------------------------------------------------------------------
808	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
809	#
810	# Invoked automatically whenever the "image" command comes in from
811	# the rendering server. Indicates that binary image data with the
812	# specified <size> will follow.
813	# ----------------------------------------------------------------------
814	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
815	global readyForNextFrame
816	set readyForNextFrame 1
817	array set info {
818	-token "???"
819	-bytes 0
820	-type image
821	}
822	array set info $args
823	set bytes [ReceiveBytes $info(-bytes)]
824	if { $info(-type) == "image" } {
825	if 0 {
826	set f [open "last.ppm" "w"]
827	fconfigure $f -encoding binary
828	puts -nonewline $f $bytes
829	close $f
830	}
831	$_image(plot) configure -data $bytes
832	set time [clock seconds]
833	set date [clock format $time]
834	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
835	if { $_start > 0 } {
836	set finish [clock clicks -milliseconds]
837	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
838	set _start 0
839	}
840	} elseif { $info(type) == "print" } {
841	set tag $this-print-$info(-token)
842	set _hardcopy($tag) $bytes
843	}
844	}
845
846	#
847	# ReceiveDataset --
848	#
849	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
850	if { ![isconnected] } {
851	return
852	}
853	set option [lindex $args 0]
854	switch -- $option {
855	"scalar" {
856	set option [lindex $args 1]
857	switch -- $option {
858	"world" {
859	foreach { x y z value tag } [lrange $args 2 end] break
860	}
861	"pixel" {
862	foreach { x y value tag } [lrange $args 2 end] break
863	}
864	}
865	}
866	"vector" {
867	set option [lindex $args 1]
868	switch -- $option {
869	"world" {
870	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
871	}
872	"pixel" {
873	foreach { x y vx vy vz tag } [lrange $args 2 end] break
874	}
875	}
876	}
877	"names" {
878	foreach { name } [lindex $args 1] {
879	#puts stderr "Dataset: $name"
880	}
881	}
882	default {
883	error "unknown dataset option \"$option\" from server"
884	}
885	}
886	}
887
888	# ----------------------------------------------------------------------
889	# USAGE: Rebuild
890	#
891	# Called automatically whenever something changes that affects the
892	# data in the widget. Clears any existing data and rebuilds the
893	# widget to display new data.
894	# ----------------------------------------------------------------------
895	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
896	set w [winfo width $itk_component(view)]
897	set h [winfo height $itk_component(view)]
898	if { $w < 2 \|\| $h < 2 } {
899	update
900	$_dispatcher event -idle !rebuild
901	return
902	}
903
904	# Turn on buffering of commands to the server. We don't want to
905	# be preempted by a server disconnect/reconnect (which automatically
906	# generates a new call to Rebuild).
907	StartBufferingCommands
908
909	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
910	set _width $w
911	set _height $h
912	$_arcball resize $w $h
913	DoResize
914	if { $_settings(-stretchtofit) } {
915	AdjustSetting -stretchtofit
916	}
917	}
918	if { $_reset } {
919	#
920	# Reset the camera and other view parameters
921	#
922	InitSettings -isheightmap -background
923
924	# Setting a custom exponent and label format for axes is causing
925	# a problem with rounding. Near zero ticks aren't rounded by
926	# the %g format. The VTK CubeAxes seem to currently work best
927	# when allowed to automatically set the exponent and precision
928	# based on the axis ranges. This does tend to result in less
929	# visual clutter, so I think it is best to use the automatic
930	# settings by default. We can test more fine-grained
931	# controls on the axis settings tab if necessary.
932	# -Leif
933	#SendCmd "axis exp 0 0 0 1"
934
935	SendCmd "axis lrot z 90"
936	$_arcball quaternion [ViewToQuaternion]
937	if {$_settings(-isheightmap) } {
938	if { $_view(-ortho)} {
939	SendCmd "camera mode ortho"
940	} else {
941	SendCmd "camera mode persp"
942	}
943	DoRotate
944	SendCmd "camera reset"
945	}
946	PanCamera
947	StopBufferingCommands
948	SendCmd "imgflush"
949	StartBufferingCommands
950	}
951
952	set _first ""
953	# Start off with no datasets visible.
954	SendCmd "dataset visible 0"
955	set scale [GetHeightmapScale]
956	foreach dataobj [get -objects] {
957	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
958	set _first $dataobj
959	}
960	foreach comp [$dataobj components] {
961	set tag $dataobj-$comp
962	if { ![info exists _datasets($tag)] } {
963	set bytes [$dataobj vtkdata $comp]
964	if 0 {
965	set f [open /tmp/vtkheightmap.vtk "w"]
966	fconfigure $f -translation binary -encoding binary
967	puts -nonewline $f $bytes
968	close $f
969	}
970	set length [string length $bytes]
971	if { $_reportClientInfo } {
972	set info {}
973	lappend info "tool_id" [$dataobj hints toolid]
974	lappend info "tool_name" [$dataobj hints toolname]
975	lappend info "tool_title" [$dataobj hints tooltitle]
976	lappend info "tool_command" [$dataobj hints toolcommand]
977	lappend info "tool_revision" [$dataobj hints toolrevision]
978	lappend info "dataset_label" [$dataobj hints label]
979	lappend info "dataset_size" $length
980	lappend info "dataset_tag" $tag
981	SendCmd "clientinfo [list $info]"
982	}
983	SendCmd "dataset add $tag data follows $length"
984	SendData $bytes
985	set _datasets($tag) 1
986	SetObjectStyle $dataobj $comp
987	}
988	if { [info exists _obj2ovride($dataobj-raise)] } {
989	# Setting dataset visible enables outline
990	# and heightmap
991	SendCmd "dataset visible 1 $tag"
992	}
993	if { ![info exists _comp2scale($tag)] \|\|
994	$_comp2scale($tag) != $scale } {
995	SendCmd "heightmap heightscale $scale $tag"
996	set _comp2scale($tag) $scale
997	}
998	}
999	}
1000	if { $_first != "" } {
1001	$itk_component(field) choices delete 0 end
1002	$itk_component(fieldmenu) delete 0 end
1003	array unset _fields
1004	set _curFldName ""
1005	foreach cname [$_first components] {
1006	foreach fname [$_first fieldnames $cname] {
1007	if { [info exists _fields($fname)] } {
1008	continue
1009	}
1010	foreach { label units components } \
1011	[$_first fieldinfo $fname] break
1012	$itk_component(field) choices insert end "$fname" "$label"
1013	$itk_component(fieldmenu) add radiobutton -label "$label" \
1014	-value $label -variable [itcl::scope _curFldLabel] \
1015	-selectcolor red \
1016	-activebackground $itk_option(-plotbackground) \
1017	-activeforeground $itk_option(-plotforeground) \
1018	-font "Arial 8" \
1019	-command [itcl::code $this Combo invoke]
1020	set _fields($fname) [list $label $units $components]
1021	if { $_curFldName == "" } {
1022	set _curFldName $fname
1023	set _curFldLabel $label
1024	}
1025	}
1026	}
1027	$itk_component(field) value $_curFldLabel
1028	}
1029	InitSettings -stretchtofit -outline
1030
1031	if { $_reset } {
1032	SendCmd "axis tickpos outside"
1033	#SendCmd "axis lformat all %g"
1034
1035	foreach axis { x y z } {
1036	set label ""
1037	if { $_first != "" } {
1038	if { $axis == "z" } {
1039	set label [$_first hints label]
1040	} else {
1041	set label [$_first hints ${axis}label]
1042	}
1043	}
1044	if { $label == "" } {
1045	if {$axis == "z"} {
1046	if { [string match "component*" $_curFldName] } {
1047	set label [string toupper $axis]
1048	} else {
1049	set label $_curFldLabel
1050	}
1051	} else {
1052	set label [string toupper $axis]
1053	}
1054	}
1055	# May be a space in the axis label.
1056	SendCmd [list axis name $axis $label]
1057
1058	set units ""
1059	if { $_first != "" } {
1060	if { $axis == "z" } {
1061	set units [$_first hints units]
1062	} else {
1063	set units [$_first hints ${axis}units]
1064	}
1065	}
1066	if { $units == "" && $axis == "z" } {
1067	if { $_first != "" && [$_first hints zunits] != "" } {
1068	set units [$_first hints zunits]
1069	} elseif { [info exists _fields($_curFldName)] } {
1070	set units [lindex $_fields($_curFldName) 1]
1071	}
1072	}
1073	# May be a space in the axis units.
1074	SendCmd [list axis units $axis $units]
1075	}
1076	#
1077	# Reset the camera and other view parameters
1078	#
1079	ResetAxes
1080	$_arcball quaternion [ViewToQuaternion]
1081	if {$_settings(-isheightmap) } {
1082	if { $_view(-ortho)} {
1083	SendCmd "camera mode ortho"
1084	} else {
1085	SendCmd "camera mode persp"
1086	}
1087	DoRotate
1088	SendCmd "camera reset"
1089	}
1090	PanCamera
1091	InitSettings -xgrid -ygrid -zgrid \
1092	-axisvisible -axislabels -heightmapscale -field -isheightmap \
1093	-numisolines
1094	if { [array size _fields] < 2 } {
1095	catch {blt::table forget $itk_component(field) $itk_component(field_l)}
1096	}
1097	RequestLegend
1098	set _reset 0
1099	}
1100	global readyForNextFrame
1101	set readyForNextFrame 0; # Don't advance to the next frame
1102
1103	# Actually write the commands to the server socket. If it fails, we don't
1104	# care. We're finished here.
1105	blt::busy hold $itk_component(hull)
1106	StopBufferingCommands
1107	blt::busy release $itk_component(hull)
1108	}
1109
1110	# ----------------------------------------------------------------------
1111	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1112	#
1113	# Returns a list of server IDs for the current datasets being displayed. This
1114	# is normally a single ID, but it might be a list of IDs if the current data
1115	# object has multiple components.
1116	# ----------------------------------------------------------------------
1117	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1118	set flag [lindex $args 0]
1119	switch -- $flag {
1120	"-all" {
1121	if { [llength $args] > 1 } {
1122	error "CurrentDatasets: can't specify dataobj after \"-all\""
1123	}
1124	set dlist [get -objects]
1125	}
1126	"-visible" {
1127	if { [llength $args] > 1 } {
1128	set dlist {}
1129	set args [lrange $args 1 end]
1130	foreach dataobj $args {
1131	if { [info exists _obj2ovride($dataobj-raise)] } {
1132	lappend dlist $dataobj
1133	}
1134	}
1135	} else {
1136	set dlist [get -visible]
1137	}
1138	}
1139	default {
1140	set dlist $args
1141	}
1142	}
1143	set rlist ""
1144	foreach dataobj $dlist {
1145	foreach comp [$dataobj components] {
1146	set tag $dataobj-$comp
1147	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1148	lappend rlist $tag
1149	}
1150	}
1151	}
1152	return $rlist
1153	}
1154
1155	itcl::body Rappture::VtkHeightmapViewer::CameraReset {} {
1156	array set _view {
1157	-qw 0.36
1158	-qx 0.25
1159	-qy 0.50
1160	-qz 0.70
1161	-xpan 0
1162	-ypan 0
1163	-zoom 1.0
1164	}
1165	if { $_first != "" } {
1166	set location [$_first hints camera]
1167	if { $location != "" } {
1168	array set _view $location
1169	}
1170	}
1171	$_arcball quaternion [ViewToQuaternion]
1172	if {$_settings(-isheightmap) } {
1173	DoRotate
1174	}
1175	SendCmd "camera reset"
1176	}
1177
1178	# ----------------------------------------------------------------------
1179	# USAGE: Zoom in
1180	# USAGE: Zoom out
1181	# USAGE: Zoom reset
1182	#
1183	# Called automatically when the user clicks on one of the zoom
1184	# controls for this widget. Changes the zoom for the current view.
1185	# ----------------------------------------------------------------------
1186	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1187	switch -- $option {
1188	"in" {
1189	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1190	SendCmd "camera zoom $_view(-zoom)"
1191	}
1192	"out" {
1193	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1194	SendCmd "camera zoom $_view(-zoom)"
1195	}
1196	"reset" {
1197	array set _view {
1198	-xpan 0
1199	-ypan 0
1200	-zoom 1.0
1201	}
1202	SendCmd "camera reset"
1203	}
1204	}
1205	}
1206
1207	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1208	set x $_view(-xpan)
1209	set y $_view(-ypan)
1210	SendCmd "camera pan $x $y"
1211	}
1212
1213
1214	# ----------------------------------------------------------------------
1215	# USAGE: Rotate click <x> <y>
1216	# USAGE: Rotate drag <x> <y>
1217	# USAGE: Rotate release <x> <y>
1218	#
1219	# Called automatically when the user clicks/drags/releases in the
1220	# plot area. Moves the plot according to the user's actions.
1221	# ----------------------------------------------------------------------
1222	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1223	switch -- $option {
1224	"click" {
1225	$itk_component(view) configure -cursor fleur
1226	set _click(x) $x
1227	set _click(y) $y
1228	}
1229	"drag" {
1230	if {[array size _click] == 0} {
1231	Rotate click $x $y
1232	} else {
1233	set w [winfo width $itk_component(view)]
1234	set h [winfo height $itk_component(view)]
1235	if {$w <= 0 \|\| $h <= 0} {
1236	return
1237	}
1238
1239	if {[catch {
1240	# this fails sometimes for no apparent reason
1241	set dx [expr {double($x-$_click(x))/$w}]
1242	set dy [expr {double($y-$_click(y))/$h}]
1243	}]} {
1244	return
1245	}
1246	if { $dx == 0 && $dy == 0 } {
1247	return
1248	}
1249	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1250	EventuallyRotate $q
1251	set _click(x) $x
1252	set _click(y) $y
1253	}
1254	}
1255	"release" {
1256	Rotate drag $x $y
1257	$itk_component(view) configure -cursor ""
1258	catch {unset _click}
1259	}
1260	default {
1261	error "bad option \"$option\": should be click, drag, release"
1262	}
1263	}
1264	}
1265
1266	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1267	foreach tag [CurrentDatasets -visible] {
1268	SendCmd "dataset getscalar pixel $x $y $tag"
1269	}
1270	}
1271
1272	# ----------------------------------------------------------------------
1273	# USAGE: $this Pan click x y
1274	# $this Pan drag x y
1275	# $this Pan release x y
1276	#
1277	# Called automatically when the user clicks on one of the zoom
1278	# controls for this widget. Changes the zoom for the current view.
1279	# ----------------------------------------------------------------------
1280	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1281	switch -- $option {
1282	"set" {
1283	set w [winfo width $itk_component(view)]
1284	set h [winfo height $itk_component(view)]
1285	set x [expr $x / double($w)]
1286	set y [expr $y / double($h)]
1287	set _view(-xpan) [expr $_view(-xpan) + $x]
1288	set _view(-ypan) [expr $_view(-ypan) + $y]
1289	PanCamera
1290	return
1291	}
1292	"click" {
1293	set _click(x) $x
1294	set _click(y) $y
1295	$itk_component(view) configure -cursor hand1
1296	}
1297	"drag" {
1298	if { ![info exists _click(x)] } {
1299	set _click(x) $x
1300	}
1301	if { ![info exists _click(y)] } {
1302	set _click(y) $y
1303	}
1304	set w [winfo width $itk_component(view)]
1305	set h [winfo height $itk_component(view)]
1306	set dx [expr ($_click(x) - $x)/double($w)]
1307	set dy [expr ($_click(y) - $y)/double($h)]
1308	set _click(x) $x
1309	set _click(y) $y
1310	set _view(-xpan) [expr $_view(-xpan) - $dx]
1311	set _view(-ypan) [expr $_view(-ypan) - $dy]
1312	PanCamera
1313	}
1314	"release" {
1315	Pan drag $x $y
1316	$itk_component(view) configure -cursor ""
1317	}
1318	default {
1319	error "unknown option \"$option\": should set, click, drag, or release"
1320	}
1321	}
1322	}
1323
1324	# ----------------------------------------------------------------------
1325	# USAGE: InitSettings <what> ?<value>?
1326	#
1327	# Used internally to update rendering settings whenever parameters
1328	# change in the popup settings panel. Sends the new settings off
1329	# to the back end.
1330	# ----------------------------------------------------------------------
1331	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1332	foreach spec $args {
1333	if { [info exists _settings($_first${spec})] } {
1334	# Reset global setting with dataobj specific setting
1335	set _settings($spec) $_settings($_first${spec})
1336	}
1337	AdjustSetting $spec
1338	}
1339	}
1340
1341	#
1342	# AdjustSetting --
1343	#
1344	# Changes/updates a specific setting in the widget. There are
1345	# usually user-setable option. Commands are sent to the render
1346	# server.
1347	#
1348	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1349	if { ![isconnected] } {
1350	return
1351	}
1352	switch -- $what {
1353	"-axisflymode" {
1354	set mode [$itk_component(axisflymode) value]
1355	set mode [$itk_component(axisflymode) translate $mode]
1356	set _settings($what) $mode
1357	SendCmd "axis flymode $mode"
1358	}
1359	"-axislabels" {
1360	set bool $_settings($what)
1361	SendCmd "axis labels all $bool"
1362	}
1363	"-axisminorticks" {
1364	set bool $_settings($what)
1365	SendCmd "axis minticks all $bool"
1366	}
1367	"-axisvisible" {
1368	set bool $_settings($what)
1369	SendCmd "axis visible all $bool"
1370	}
1371	"-background" {
1372	set bg [$itk_component(background) value]
1373	array set fgcolors {
1374	"black" "white"
1375	"white" "black"
1376	"grey" "black"
1377	}
1378	set fg $fgcolors($bg)
1379	configure -plotbackground $bg -plotforeground $fg
1380	$itk_component(view) delete "legend"
1381	SendCmd "screen bgcolor [Color2RGB $bg]"
1382	SendCmd "outline color [Color2RGB $fg]"
1383	SendCmd "axis color all [Color2RGB $fg]"
1384	DrawLegend
1385	}
1386	"-colormap" {
1387	set _changed($what) 1
1388	StartBufferingCommands
1389	set color [$itk_component(colormap) value]
1390	set _settings($what) $color
1391	if { $color == "none" } {
1392	if { $_settings(-colormapvisible) } {
1393	SendCmd "heightmap surface 0"
1394	set _settings(-colormapvisible) 0
1395	}
1396	} else {
1397	if { !$_settings(-colormapvisible) } {
1398	SendCmd "heightmap surface 1"
1399	set _settings(-colormapvisible) 1
1400	}
1401	SetCurrentColormap $color
1402	if {$_settings(-colormapdiscrete)} {
1403	set numColors [expr $_settings(-numisolines) + 1]
1404	SendCmd "colormap res $numColors $color"
1405	}
1406	}
1407	StopBufferingCommands
1408	EventuallyRequestLegend
1409	}
1410	"-colormapvisible" {
1411	set bool $_settings($what)
1412	SendCmd "heightmap surface $bool"
1413	}
1414	"-colormapdiscrete" {
1415	set bool $_settings($what)
1416	set numColors [expr $_settings(-numisolines) + 1]
1417	StartBufferingCommands
1418	if {$bool} {
1419	SendCmd "colormap res $numColors"
1420	# Discrete colormap requires preinterp on
1421	SendCmd "heightmap preinterp on"
1422	} else {
1423	SendCmd "colormap res default"
1424	# FIXME: add setting for preinterp (default on)
1425	SendCmd "heightmap preinterp on"
1426	}
1427	StopBufferingCommands
1428	EventuallyRequestLegend
1429	}
1430	"-edges" {
1431	set bool $_settings($what)
1432	SendCmd "heightmap edges $bool"
1433	}
1434	"-field" {
1435	set label [$itk_component(field) value]
1436	set fname [$itk_component(field) translate $label]
1437	set _settings($what) $fname
1438	if { [info exists _fields($fname)] } {
1439	foreach { label units components } $_fields($fname) break
1440	if { $components > 1 } {
1441	set _colorMode vmag
1442	} else {
1443	set _colorMode scalar
1444	}
1445	set _curFldName $fname
1446	set _curFldLabel $label
1447	} else {
1448	puts stderr "unknown field \"$fname\""
1449	return
1450	}
1451	set label ""
1452	if { $_first != "" } {
1453	set label [$_first hints label]
1454	}
1455	if { $label == "" } {
1456	if { [string match "component*" $_curFldName] } {
1457	set label Z
1458	} else {
1459	set label $_curFldLabel
1460	}
1461	}
1462	# May be a space in the axis label.
1463	SendCmd [list axis name z $label]
1464
1465	set units ""
1466	if { $_first != "" } {
1467	set units [$_first hints units]
1468	}
1469	if { $units == "" } {
1470	if { $_first != "" && [$_first hints zunits] != "" } {
1471	set units [$_first hints zunits]
1472	} elseif { [info exists _fields($_curFldName)] } {
1473	set units [lindex $_fields($_curFldName) 1]
1474	}
1475	}
1476	# May be a space in the axis units.
1477	SendCmd [list axis units z $units]
1478	# Get the new limits because the field changed.
1479	ResetAxes
1480	SendCmd "dataset scalar $_curFldName"
1481	SendCmd "heightmap colormode $_colorMode $_curFldName"
1482	UpdateContourList
1483	SendCmd "heightmap contourlist [list $_contourList]"
1484	Zoom reset
1485	DrawLegend
1486	}
1487	"-heightmapscale" {
1488	if { $_settings(-isheightmap) } {
1489	set scale [GetHeightmapScale]
1490	# Have to set the datasets individually because we are
1491	# tracking them in _comp2scale.
1492	foreach dataset [CurrentDatasets -all] {
1493	SendCmd "heightmap heightscale $scale $dataset"
1494	set _comp2scale($dataset) $scale
1495	}
1496	ResetAxes
1497	}
1498	}
1499	"-isheightmap" {
1500	set bool $_settings($what)
1501	set c $itk_component(view)
1502	StartBufferingCommands
1503	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1504	if { $bool } {
1505	set _settings(-heightmapscale) 50
1506	set _settings(-opacity) $_settings(-saveopacity)
1507	set _settings(-lighting) $_settings(-savelighting)
1508	set _settings(-outline) 0
1509	} else {
1510	set _settings(-heightmapscale) 0
1511	set _settings(-lighting) 0
1512	set _settings(-opacity) 100
1513	set _settings(-outline) $_settings(-saveoutline)
1514	}
1515	InitSettings -lighting -opacity -outline
1516	set scale [GetHeightmapScale]
1517	# Have to set the datasets individually because we are
1518	# tracking them in _comp2scale.
1519	foreach dataset [CurrentDatasets -all] {
1520	SendCmd "heightmap heightscale $scale $dataset"
1521	set _comp2scale($dataset) $scale
1522	}
1523	if { $bool } {
1524	$itk_component(lighting) configure -state normal
1525	$itk_component(opacity) configure -state normal
1526	$itk_component(scale) configure -state normal
1527	$itk_component(opacity_l) configure -state normal
1528	$itk_component(scale_l) configure -state normal
1529	$itk_component(outline) configure -state disabled
1530	if {$_view(-ortho)} {
1531	SendCmd "camera mode ortho"
1532	} else {
1533	SendCmd "camera mode persp"
1534	}
1535	} else {
1536	$itk_component(lighting) configure -state disabled
1537	$itk_component(opacity) configure -state disabled
1538	$itk_component(scale) configure -state disabled
1539	$itk_component(opacity_l) configure -state disabled
1540	$itk_component(scale_l) configure -state disabled
1541	$itk_component(outline) configure -state normal
1542	SendCmd "camera mode image"
1543	}
1544	if {$_settings(-stretchtofit)} {
1545	if {$scale == 0} {
1546	SendCmd "camera aspect window"
1547	} else {
1548	SendCmd "camera aspect square"
1549	}
1550	}
1551	ResetAxes
1552	if { $bool } {
1553	set q [ViewToQuaternion]
1554	$_arcball quaternion $q
1555	SendCmd "camera orient $q"
1556	} else {
1557	bind $c <ButtonPress-1> {}
1558	bind $c <B1-Motion> {}
1559	bind $c <ButtonRelease-1> {}
1560	}
1561	Zoom reset
1562	# Fix the mouse bindings for rotation/panning and the
1563	# camera mode. Ideally we'd create a bindtag for these.
1564	if { $bool } {
1565	# Bindings for rotation via mouse
1566	bind $c <ButtonPress-1> \
1567	[itcl::code $this Rotate click %x %y]
1568	bind $c <B1-Motion> \
1569	[itcl::code $this Rotate drag %x %y]
1570	bind $c <ButtonRelease-1> \
1571	[itcl::code $this Rotate release %x %y]
1572	}
1573	StopBufferingCommands
1574	}
1575	"-isolinecolor" {
1576	set color [$itk_component(isolinecolor) value]
1577	if { $color == "none" } {
1578	if { $_settings(-isolinesvisible) } {
1579	SendCmd "heightmap isolines 0"
1580	set _settings(-isolinesvisible) 0
1581	}
1582	} else {
1583	if { !$_settings(-isolinesvisible) } {
1584	SendCmd "heightmap isolines 1"
1585	set _settings(-isolinesvisible) 1
1586	}
1587	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1588	}
1589	DrawLegend
1590	}
1591	"-isolinesvisible" {
1592	set bool $_settings($what)
1593	SendCmd "heightmap isolines $bool"
1594	DrawLegend
1595	}
1596	"-legendvisible" {
1597	if { !$_settings($what) } {
1598	$itk_component(view) delete legend
1599	}
1600	DrawLegend
1601	}
1602	"-lighting" {
1603	if { $_settings(-isheightmap) } {
1604	set _settings(-savelighting) $_settings($what)
1605	set bool $_settings($what)
1606	SendCmd "heightmap lighting $bool"
1607	} else {
1608	SendCmd "heightmap lighting 0"
1609	}
1610	}
1611	"-numisolines" {
1612	set _settings($what) [$itk_component(numisolines) value]
1613	set _currentNumIsolines $_settings($what)
1614	UpdateContourList
1615	set _changed($what) 1
1616	SendCmd "heightmap contourlist [list $_contourList]"
1617	if {$_settings(-colormapdiscrete)} {
1618	set numColors [expr $_settings($what) + 1]
1619	SendCmd "colormap res $numColors"
1620	EventuallyRequestLegend
1621	} else {
1622	DrawLegend
1623	}
1624	}
1625	"-opacity" {
1626	set _changed($what) 1
1627	set val [expr $_settings($what) * 0.01]
1628	if { $_settings(-isheightmap) } {
1629	set _settings(-saveopacity) $_settings($what)
1630	SendCmd "heightmap opacity $val"
1631	} else {
1632	SendCmd "heightmap opacity 1.0"
1633	}
1634	}
1635	"-outline" {
1636	if { $_settings(-isheightmap) } {
1637	SendCmd "outline visible 0"
1638	} else {
1639	set _settings(-saveoutline) $_settings($what)
1640	set bool $_settings($what)
1641	SendCmd "outline visible $bool"
1642	}
1643	}
1644	"-stretchtofit" {
1645	set bool $_settings($what)
1646	if { $bool } {
1647	set heightScale [GetHeightmapScale]
1648	if {$heightScale == 0} {
1649	SendCmd "camera aspect window"
1650	} else {
1651	SendCmd "camera aspect square"
1652	}
1653	} else {
1654	SendCmd "camera aspect native"
1655	}
1656	Zoom reset
1657	}
1658	"-wireframe" {
1659	set bool $_settings($what)
1660	SendCmd "heightmap wireframe $bool"
1661	}
1662	"-xgrid" - "-ygrid" - "-zgrid" {
1663	set axis [string tolower [string range $what 1 1]]
1664	set bool $_settings($what)
1665	SendCmd "axis grid $axis $bool"
1666	}
1667	default {
1668	error "don't know how to fix $what"
1669	}
1670	}
1671	}
1672
1673	#
1674	# RequestLegend --
1675	#
1676	# Request a new legend from the server. The size of the legend
1677	# is determined from the height of the canvas.
1678	#
1679	# This should be called when
1680	# 1. A new current colormap is set.
1681	# 2. Window is resized.
1682	# 3. The limits of the data have changed. (Just need a redraw).
1683	# 4. Number of isolines have changed. (Just need a redraw).
1684	# 5. Legend becomes visible (Just need a redraw).
1685	#
1686	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1687	set _legendPending 0
1688	set font "Arial 8"
1689	set w 12
1690	set lineht [font metrics $font -linespace]
1691	# color ramp height = (canvas height) - (min and max value lines) - 2
1692	set h [expr {$_height - 2 * ($lineht + 2)}]
1693	set _legendHeight $h
1694
1695	set fname $_curFldName
1696	if { [string match "component*" $fname] } {
1697	set title ""
1698	} else {
1699	if { [info exists _fields($fname)] } {
1700	foreach { title units } $_fields($fname) break
1701	if { $units != "" } {
1702	set title [format "%s (%s)" $title $units]
1703	}
1704	} else {
1705	set title $fname
1706	}
1707	}
1708	# If there's a title too, subtract one more line
1709	if { $title != "" } {
1710	incr h -$lineht
1711	}
1712	if { $h < 1 } {
1713	return
1714	}
1715	# Set the legend on the first dataset.
1716	if { $_currentColormap != "" } {
1717	set cmap $_currentColormap
1718	if { ![info exists _colormaps($cmap)] } {
1719	BuildColormap $cmap
1720	set _colormaps($cmap) 1
1721	}
1722	#SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1723	SendCmd "legend2 $cmap $w $h"
1724	}
1725	}
1726
1727	#
1728	# ResetAxes --
1729	#
1730	# Set axis z bounds and range
1731	#
1732	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1733	if { ![info exists _limits($_curFldName)]} {
1734	SendCmd "dataset maprange all"
1735	SendCmd "axis autorange z on"
1736	SendCmd "axis autobounds z on"
1737	return
1738	}
1739	foreach { xmin xmax } $_limits(x) break
1740	foreach { ymin ymax } $_limits(y) break
1741	foreach { vmin vmax } $_limits($_curFldName) break
1742
1743	global tcl_precision
1744	set tcl_precision 17
1745	set xr [expr $xmax - $xmin]
1746	set yr [expr $ymax - $ymin]
1747	set vr [expr $vmax - $vmin]
1748	set r [expr ($yr > $xr) ? $yr : $xr]
1749	if { $vr < 1.0e-17 } {
1750	set dataScale 1.0
1751	} else {
1752	set dataScale [expr $r / $vr]
1753	}
1754	set heightScale [GetHeightmapScale]
1755	set bmin [expr $heightScale * $dataScale * $vmin]
1756	set bmax [expr $heightScale * $dataScale * $vmax]
1757	if {$heightScale > 0} {
1758	set zpos [expr - $bmin]
1759	SendCmd "heightmap pos 0 0 $zpos"
1760	} else {
1761	SendCmd "heightmap pos 0 0 0"
1762	}
1763	set bmax [expr $bmax - $bmin]
1764	set bmin 0
1765	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1766	SendCmd "axis bounds z $bmin $bmax"
1767	SendCmd "axis range z $_limits($_curFldName)"
1768	}
1769
1770	#
1771	# SetCurrentColormap --
1772	#
1773	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1774	# Keep track of the colormaps that we build.
1775	if { $name != "none" && ![info exists _colormaps($name)] } {
1776	BuildColormap $name
1777	set _colormaps($name) 1
1778	}
1779	set _currentColormap $name
1780	SendCmd "heightmap colormap $_currentColormap"
1781	}
1782
1783	#
1784	# BuildColormap --
1785	#
1786	# Build the designated colormap on the server.
1787	#
1788	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1789	set cmap [ColorsToColormap $name]
1790	if { [llength $cmap] == 0 } {
1791	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1792	}
1793	set amap "0.0 1.0 1.0 1.0"
1794	SendCmd "colormap add $name { $cmap } { $amap }"
1795	}
1796
1797	# ----------------------------------------------------------------------
1798	# CONFIGURATION OPTION: -mode
1799	# ----------------------------------------------------------------------
1800	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1801	switch -- $itk_option(-mode) {
1802	"heightmap" {
1803	set _settings(-isheightmap) 1
1804	}
1805	"contour" {
1806	set _settings(-isheightmap) 0
1807	}
1808	default {
1809	error "unknown mode settings \"$itk_option(-mode)\""
1810	}
1811	}
1812	if { !$_reset } {
1813	AdjustSetting -isheightmap
1814	}
1815	}
1816
1817	# ----------------------------------------------------------------------
1818	# CONFIGURATION OPTION: -plotbackground
1819	# ----------------------------------------------------------------------
1820	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1821	if { [isconnected] } {
1822	set rgb [Color2RGB $itk_option(-plotbackground)]
1823	if { !$_reset } {
1824	SendCmd "screen bgcolor $rgb"
1825	}
1826	$itk_component(view) configure -background $itk_option(-plotbackground)
1827	}
1828	}
1829
1830	# ----------------------------------------------------------------------
1831	# CONFIGURATION OPTION: -plotforeground
1832	# ----------------------------------------------------------------------
1833	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1834	if { [isconnected] } {
1835	set rgb [Color2RGB $itk_option(-plotforeground)]
1836	if { !$_reset } {
1837	SendCmd "axis color all $rgb"
1838	SendCmd "outline color $rgb"
1839	}
1840	}
1841	}
1842
1843	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1844
1845	set fg [option get $itk_component(hull) font Font]
1846	#set bfg [option get $itk_component(hull) boldFont Font]
1847
1848	set inner [$itk_component(main) insert end \
1849	-title "Contour/Surface Settings" \
1850	-icon [Rappture::icon contour2]]
1851	$inner configure -borderwidth 4
1852
1853	checkbutton $inner.legend \
1854	-text "Legend" \
1855	-variable [itcl::scope _settings(-legendvisible)] \
1856	-command [itcl::code $this AdjustSetting -legendvisible] \
1857	-font "Arial 9"
1858
1859	checkbutton $inner.wireframe \
1860	-text "Wireframe" \
1861	-variable [itcl::scope _settings(-wireframe)] \
1862	-command [itcl::code $this AdjustSetting -wireframe] \
1863	-font "Arial 9"
1864
1865	itk_component add lighting {
1866	checkbutton $inner.lighting \
1867	-text "Enable Lighting" \
1868	-variable [itcl::scope _settings(-lighting)] \
1869	-command [itcl::code $this AdjustSetting -lighting] \
1870	-font "Arial 9"
1871	} {
1872	ignore -font
1873	}
1874	checkbutton $inner.edges \
1875	-text "Edges" \
1876	-variable [itcl::scope _settings(-edges)] \
1877	-command [itcl::code $this AdjustSetting -edges] \
1878	-font "Arial 9"
1879
1880	itk_component add outline {
1881	checkbutton $inner.outline \
1882	-text "Outline" \
1883	-variable [itcl::scope _settings(-outline)] \
1884	-command [itcl::code $this AdjustSetting -outline] \
1885	-font "Arial 9"
1886	} {
1887	ignore -font
1888	}
1889	checkbutton $inner.stretch \
1890	-text "Stretch to fit" \
1891	-variable [itcl::scope _settings(-stretchtofit)] \
1892	-command [itcl::code $this AdjustSetting -stretchtofit] \
1893	-font "Arial 9"
1894
1895	checkbutton $inner.isolines \
1896	-text "Isolines" \
1897	-variable [itcl::scope _settings(-isolinesvisible)] \
1898	-command [itcl::code $this AdjustSetting -isolinesvisible] \
1899	-font "Arial 9"
1900
1901	checkbutton $inner.colormapDiscrete \
1902	-text "Discrete Colormap" \
1903	-variable [itcl::scope _settings(-colormapdiscrete)] \
1904	-command [itcl::code $this AdjustSetting -colormapdiscrete] \
1905	-font "Arial 9"
1906
1907	itk_component add field_l {
1908	label $inner.field_l -text "Field" -font "Arial 9"
1909	} {
1910	ignore -font
1911	}
1912	itk_component add field {
1913	Rappture::Combobox $inner.field -width 10 -editable 0
1914	}
1915	bind $inner.field <<Value>> \
1916	[itcl::code $this AdjustSetting -field]
1917
1918	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1919	itk_component add colormap {
1920	Rappture::Combobox $inner.colormap -width 10 -editable 0
1921	}
1922	$inner.colormap choices insert end [GetColormapList -includeNone]
1923	$itk_component(colormap) value $_settings(-colormap)
1924	bind $inner.colormap <<Value>> \
1925	[itcl::code $this AdjustSetting -colormap]
1926
1927	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1928	itk_component add isolinecolor {
1929	Rappture::Combobox $inner.isolinecolor -width 10 -editable 0
1930	}
1931	$inner.isolinecolor choices insert end \
1932	"black" "black" \
1933	"blue" "blue" \
1934	"cyan" "cyan" \
1935	"green" "green" \
1936	"grey" "grey" \
1937	"magenta" "magenta" \
1938	"orange" "orange" \
1939	"red" "red" \
1940	"white" "white" \
1941	"none" "none"
1942
1943	$itk_component(isolinecolor) value $_settings(-isolinecolor)
1944	bind $inner.isolinecolor <<Value>> \
1945	[itcl::code $this AdjustSetting -isolinecolor]
1946
1947	label $inner.background_l -text "Background Color" -font "Arial 9"
1948	itk_component add background {
1949	Rappture::Combobox $inner.background -width 10 -editable 0
1950	}
1951	$inner.background choices insert end \
1952	"black" "black" \
1953	"white" "white" \
1954	"grey" "grey"
1955
1956	$itk_component(background) value "white"
1957	bind $inner.background <<Value>> \
1958	[itcl::code $this AdjustSetting -background]
1959
1960	itk_component add opacity_l {
1961	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1962	} {
1963	ignore -font
1964	}
1965	itk_component add opacity {
1966	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1967	-variable [itcl::scope _settings(-opacity)] \
1968	-showvalue off \
1969	-command [itcl::code $this AdjustSetting -opacity]
1970	}
1971	itk_component add scale_l {
1972	label $inner.scale_l -text "Scale" -font "Arial 9"
1973	} {
1974	ignore -font
1975	}
1976	itk_component add scale {
1977	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1978	-variable [itcl::scope _settings(-heightmapscale)] \
1979	-showvalue off \
1980	-command [itcl::code $this AdjustSetting -heightmapscale]
1981	}
1982	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1983	itk_component add numisolines {
1984	Rappture::Spinint $inner.numisolines \
1985	-min 0 -max 50 -font "arial 9"
1986	}
1987	$itk_component(numisolines) value $_settings(-numisolines)
1988	bind $itk_component(numisolines) <<Value>> \
1989	[itcl::code $this AdjustSetting -numisolines]
1990
1991	frame $inner.separator1 -height 2 -relief sunken -bd 1
1992	frame $inner.separator2 -height 2 -relief sunken -bd 1
1993
1994	blt::table $inner \
1995	0,0 $inner.field_l -anchor w -pady 2 \
1996	0,1 $inner.field -anchor w -pady 2 -fill x \
1997	1,0 $inner.colormap_l -anchor w -pady 2 \
1998	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1999	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
2000	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
2001	3,0 $inner.background_l -anchor w -pady 2 \
2002	3,1 $inner.background -anchor w -pady 2 -fill x \
2003	4,0 $inner.numisolines_l -anchor w -pady 2 \
2004	4,1 $inner.numisolines -anchor w -pady 2 \
2005	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
2006	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
2007	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
2008	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
2009	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
2010	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
2011	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
2012	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
2013	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
2014	14,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
2015	15,0 $inner.opacity_l -anchor w -pady 2 \
2016	15,1 $inner.opacity -fill x -pady 2 \
2017	16,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
2018	16,1 $inner.scale -fill x -pady 2 -cspan 2 \
2019
2020	blt::table configure $inner r* c* -resize none
2021	blt::table configure $inner r17 c1 -resize expand
2022	}
2023
2024	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
2025
2026	set fg [option get $itk_component(hull) font Font]
2027	#set bfg [option get $itk_component(hull) boldFont Font]
2028
2029	set inner [$itk_component(main) insert end \
2030	-title "Axis Settings" \
2031	-icon [Rappture::icon axis2]]
2032	$inner configure -borderwidth 4
2033
2034	checkbutton $inner.visible \
2035	-text "Axes" \
2036	-variable [itcl::scope _settings(-axisvisible)] \
2037	-command [itcl::code $this AdjustSetting -axisvisible] \
2038	-font "Arial 9"
2039	checkbutton $inner.labels \
2040	-text "Axis Labels" \
2041	-variable [itcl::scope _settings(-axislabels)] \
2042	-command [itcl::code $this AdjustSetting -axislabels] \
2043	-font "Arial 9"
2044	label $inner.grid_l -text "Grid" -font "Arial 9"
2045	checkbutton $inner.xgrid \
2046	-text "X" \
2047	-variable [itcl::scope _settings(-xgrid)] \
2048	-command [itcl::code $this AdjustSetting -xgrid] \
2049	-font "Arial 9"
2050	checkbutton $inner.ygrid \
2051	-text "Y" \
2052	-variable [itcl::scope _settings(-ygrid)] \
2053	-command [itcl::code $this AdjustSetting -ygrid] \
2054	-font "Arial 9"
2055	checkbutton $inner.zgrid \
2056	-text "Z" \
2057	-variable [itcl::scope _settings(-zgrid)] \
2058	-command [itcl::code $this AdjustSetting -zgrid] \
2059	-font "Arial 9"
2060	checkbutton $inner.minorticks \
2061	-text "Minor Ticks" \
2062	-variable [itcl::scope _settings(-axisminorticks)] \
2063	-command [itcl::code $this AdjustSetting -axisminorticks] \
2064	-font "Arial 9"
2065
2066	label $inner.mode_l -text "Mode" -font "Arial 9"
2067
2068	itk_component add axisflymode {
2069	Rappture::Combobox $inner.mode -width 10 -editable 0
2070	}
2071	$inner.mode choices insert end \
2072	"static_triad" "static" \
2073	"closest_triad" "closest" \
2074	"furthest_triad" "farthest" \
2075	"outer_edges" "outer"
2076	$itk_component(axisflymode) value $_settings(-axisflymode)
2077	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
2078
2079	blt::table $inner \
2080	0,0 $inner.visible -anchor w -cspan 4 \
2081	1,0 $inner.labels -anchor w -cspan 4 \
2082	2,0 $inner.minorticks -anchor w -cspan 4 \
2083	4,0 $inner.grid_l -anchor w \
2084	4,1 $inner.xgrid -anchor w \
2085	4,2 $inner.ygrid -anchor w \
2086	4,3 $inner.zgrid -anchor w \
2087	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2088	5,1 $inner.mode -fill x -cspan 3
2089
2090	blt::table configure $inner r* c* -resize none
2091	blt::table configure $inner r7 c6 -resize expand
2092	blt::table configure $inner r3 -height 0.125i
2093	}
2094
2095	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2096	set inner [$itk_component(main) insert end \
2097	-title "Camera Settings" \
2098	-icon [Rappture::icon camera]]
2099	$inner configure -borderwidth 4
2100
2101	label $inner.view_l -text "view" -font "Arial 9"
2102	set f [frame $inner.view]
2103	foreach side { front back left right top bottom } {
2104	button $f.$side -image [Rappture::icon view$side] \
2105	-command [itcl::code $this SetOrientation $side]
2106	Rappture::Tooltip::for $f.$side "Change the view to $side"
2107	pack $f.$side -side left
2108	}
2109
2110	blt::table $inner \
2111	0,0 $inner.view_l -anchor e -pady 2 \
2112	0,1 $inner.view -anchor w -pady 2
2113	blt::table configure $inner r0 -resize none
2114
2115	set labels { qx qy qz qw xpan ypan zoom }
2116	set row 1
2117	foreach tag $labels {
2118	label $inner.${tag}label -text $tag -font "Arial 9"
2119	entry $inner.${tag} -font "Arial 9" -bg white \
2120	-textvariable [itcl::scope _view(-$tag)]
2121	bind $inner.${tag} <Return> \
2122	[itcl::code $this camera set -${tag}]
2123	bind $inner.${tag} <KP_Enter> \
2124	[itcl::code $this camera set -${tag}]
2125	blt::table $inner \
2126	$row,0 $inner.${tag}label -anchor e -pady 2 \
2127	$row,1 $inner.${tag} -anchor w -pady 2
2128	blt::table configure $inner r$row -resize none
2129	incr row
2130	}
2131	checkbutton $inner.ortho \
2132	-text "Orthographic Projection" \
2133	-variable [itcl::scope _view(-ortho)] \
2134	-command [itcl::code $this camera set -ortho] \
2135	-font "Arial 9"
2136	blt::table $inner \
2137	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2138	blt::table configure $inner r$row -resize none
2139	incr row
2140
2141	blt::table configure $inner c* -resize none
2142	blt::table configure $inner c2 -resize expand
2143	blt::table configure $inner r$row -resize expand
2144	}
2145
2146	#
2147	# camera --
2148	#
2149	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2150	switch -- $option {
2151	"show" {
2152	puts [array get _view]
2153	}
2154	"set" {
2155	set what [lindex $args 0]
2156	set x $_view($what)
2157	set code [catch { string is double $x } result]
2158	if { $code != 0 \|\| !$result } {
2159	return
2160	}
2161	switch -- $what {
2162	"-ortho" {
2163	if {$_view($what)} {
2164	SendCmd "camera mode ortho"
2165	} else {
2166	SendCmd "camera mode persp"
2167	}
2168	}
2169	"-xpan" - "-ypan" {
2170	PanCamera
2171	}
2172	"-qx" - "-qy" - "-qz" - "-qw" {
2173	set q [ViewToQuaternion]
2174	$_arcball quaternion $q
2175	EventuallyRotate $q
2176	}
2177	"-zoom" {
2178	SendCmd "camera zoom $_view($what)"
2179	}
2180	}
2181	}
2182	}
2183	}
2184
2185	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2186	set bytes ""
2187	foreach dataobj [get] {
2188	foreach comp [$dataobj components] {
2189	set tag $dataobj-$comp
2190	set contents [$dataobj vtkdata $comp]
2191	append bytes "$contents\n"
2192	}
2193	}
2194	return [list .vtk $bytes]
2195	}
2196
2197	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2198	if { [image width $_image(download)] > 0 &&
2199	[image height $_image(download)] > 0 } {
2200	set bytes [$_image(download) data -format "jpeg -quality 100"]
2201	set bytes [Rappture::encoding::decode -as b64 $bytes]
2202	return [list .jpg $bytes]
2203	}
2204	return ""
2205	}
2206
2207	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2208	Rappture::Balloon $popup \
2209	-title "[Rappture::filexfer::label downloadWord] as..."
2210	set inner [$popup component inner]
2211	label $inner.summary -text "" -anchor w
2212	radiobutton $inner.vtk_button -text "VTK data file" \
2213	-variable [itcl::scope _downloadPopup(format)] \
2214	-font "Arial 9 " \
2215	-value vtk
2216	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2217	radiobutton $inner.image_button -text "Image File" \
2218	-variable [itcl::scope _downloadPopup(format)] \
2219	-font "Arial 9 " \
2220	-value image
2221	Rappture::Tooltip::for $inner.image_button \
2222	"Save as digital image."
2223
2224	button $inner.ok -text "Save" \
2225	-highlightthickness 0 -pady 2 -padx 3 \
2226	-command $command \
2227	-compound left \
2228	-image [Rappture::icon download]
2229
2230	button $inner.cancel -text "Cancel" \
2231	-highlightthickness 0 -pady 2 -padx 3 \
2232	-command [list $popup deactivate] \
2233	-compound left \
2234	-image [Rappture::icon cancel]
2235
2236	blt::table $inner \
2237	0,0 $inner.summary -cspan 2 \
2238	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2239	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2240	4,1 $inner.cancel -width .9i -fill y \
2241	4,0 $inner.ok -padx 2 -width .9i -fill y
2242	blt::table configure $inner r3 -height 4
2243	blt::table configure $inner r4 -pady 4
2244	raise $inner.image_button
2245	$inner.vtk_button invoke
2246	return $inner
2247	}
2248
2249	#
2250	# SetObjectStyle --
2251	#
2252	# Set the style of the heightmap/contour object. This gets calls
2253	# for each dataset once as it is loaded. It can overridden by
2254	# the user controls.
2255	#
2256	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2257	# Parse style string.
2258	set tag $dataobj-$comp
2259	array set style {
2260	-color BCGYR
2261	-levels 10
2262	-opacity 1.0
2263	}
2264	set stylelist [$dataobj style $comp]
2265	if { $stylelist != "" } {
2266	array set style $stylelist
2267	}
2268	# This is too complicated. We want to set the colormap, number of
2269	# isolines and opacity for the dataset. They can be the default values,
2270	# the style hints loaded with the dataset, or set by user controls. As
2271	# datasets get loaded, they first use the defaults that are overidden
2272	# by the style hints. If the user changes the global controls, then that
2273	# overrides everything else. I don't know what it means when global
2274	# controls are specified as style hints by each dataset. It complicates
2275	# the code to handle aberrant cases.
2276
2277	if { $_changed(-opacity) } {
2278	set style(-opacity) [expr $_settings(-opacity) * 0.01]
2279	}
2280	if { $_changed(-numisolines) } {
2281	set style(-levels) $_settings(-numisolines)
2282	}
2283	if { $_changed(-colormap) } {
2284	set style(-color) $_settings(-colormap)
2285	}
2286	if { $_currentColormap == "" } {
2287	$itk_component(colormap) value $style(-color)
2288	}
2289	if { [info exists style(-stretchtofit)] } {
2290	set _settings(-stretchtofit) $style(-stretchtofit)
2291	AdjustSetting -stretchtofit
2292	}
2293	if { $_currentNumIsolines != $style(-levels) } {
2294	set _currentNumIsolines $style(-levels)
2295	set _settings(-numisolines) $_currentNumIsolines
2296	$itk_component(numisolines) value $_currentNumIsolines
2297	UpdateContourList
2298	DrawLegend
2299	}
2300	SendCmd "outline add $tag"
2301	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2302	SendCmd "outline visible $_settings(-outline) $tag"
2303	set scale [GetHeightmapScale]
2304	SendCmd "[list heightmap add contourlist $_contourList $scale $tag]"
2305	set _comp2scale($tag) $_settings(-heightmapscale)
2306	SendCmd "heightmap edges $_settings(-edges) $tag"
2307	SendCmd "heightmap wireframe $_settings(-wireframe) $tag"
2308	SetCurrentColormap $style(-color)
2309	set color [$itk_component(isolinecolor) value]
2310	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2311	SendCmd "heightmap lighting $_settings(-isheightmap) $tag"
2312	SendCmd "heightmap isolines $_settings(-isolinesvisible) $tag"
2313	SendCmd "heightmap surface $_settings(-colormapvisible) $tag"
2314	SendCmd "heightmap opacity $style(-opacity) $tag"
2315	set _settings(-opacity) [expr $style(-opacity) * 100.0]
2316	}
2317
2318	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2319	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2320	return 0
2321	}
2322	return 1
2323	}
2324
2325	# ----------------------------------------------------------------------
2326	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2327	#
2328	# Invoked automatically whenever the "legend" command comes in from
2329	# the rendering server. Indicates that binary image data with the
2330	# specified <size> will follow.
2331	# ----------------------------------------------------------------------
2332	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2333	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2334	if { [isconnected] } {
2335	set bytes [ReceiveBytes $size]
2336	if { ![info exists _image(legend)] } {
2337	set _image(legend) [image create photo]
2338	}
2339	$_image(legend) configure -data $bytes
2340	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2341	if { [catch {DrawLegend} errs] != 0 } {
2342	global errorInfo
2343	puts stderr "errs=$errs errorInfo=$errorInfo"
2344	}
2345	}
2346	}
2347
2348	#
2349	# DrawLegend --
2350	#
2351	# Draws the legend in the own canvas on the right side of the plot area.
2352	#
2353	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2354	set fname $_curFldName
2355	set c $itk_component(view)
2356	set w [winfo width $c]
2357	set h [winfo height $c]
2358	set font "Arial 8"
2359	set lineht [font metrics $font -linespace]
2360
2361	if { [string match "component*" $fname] } {
2362	set title ""
2363	} else {
2364	if { [info exists _fields($fname)] } {
2365	foreach { title units } $_fields($fname) break
2366	if { $units != "" } {
2367	set title [format "%s (%s)" $title $units]
2368	}
2369	} else {
2370	set title $fname
2371	}
2372	}
2373	set x [expr $w - 2]
2374	if { !$_settings(-legendvisible) } {
2375	$c delete legend
2376	return
2377	}
2378	if { [$c find withtag "legend"] == "" } {
2379	set y 2
2380	# If there's a legend title, create a text item for the title.
2381	$c create text $x $y \
2382	-anchor ne \
2383	-fill $itk_option(-plotforeground) -tags "title legend" \
2384	-font $font
2385	if { $title != "" } {
2386	incr y $lineht
2387	}
2388	$c create text $x $y \
2389	-anchor ne \
2390	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2391	-font $font
2392	incr y $lineht
2393	$c create image $x $y \
2394	-anchor ne \
2395	-image $_image(legend) -tags "colormap legend"
2396	$c create rectangle $x $y 1 1 \
2397	-fill "" -outline "" -tags "sensor legend"
2398	$c create text $x [expr {$h-2}] \
2399	-anchor se \
2400	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2401	-font $font
2402	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2403	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2404	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2405	}
2406	$c delete isoline
2407	set x2 $x
2408	set iw [image width $_image(legend)]
2409	set ih [image height $_image(legend)]
2410	set x1 [expr $x2 - ($iw*12)/10]
2411	set color [$itk_component(isolinecolor) value]
2412
2413	# Draw the isolines on the legend.
2414	array unset _isolines
2415	if { $color != "none" && [info exists _limits($_curFldName)] &&
2416	$_settings(-isolinesvisible) && $_currentNumIsolines > 0 } {
2417
2418	foreach { vmin vmax } $_limits($_curFldName) break
2419	set range [expr double($vmax - $vmin)]
2420	if { $range <= 0.0 } {
2421	set range 1.0; # Min is greater or equal to max.
2422	}
2423	set tags "isoline legend"
2424	set offset [expr 2 + $lineht]
2425	if { $title != "" } {
2426	incr offset $lineht
2427	}
2428	foreach value $_contourList {
2429	set norm [expr 1.0 - (($value - $vmin) / $range)]
2430	set y1 [expr int(round(($norm * $ih) + $offset))]
2431	for { set off 0 } { $off < 3 } { incr off } {
2432	set _isolines([expr $y1 + $off]) $value
2433	set _isolines([expr $y1 - $off]) $value
2434	}
2435	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2436	}
2437	}
2438
2439	$c bind title <ButtonPress> [itcl::code $this Combo post]
2440	$c bind title <Enter> [itcl::code $this Combo activate]
2441	$c bind title <Leave> [itcl::code $this Combo deactivate]
2442	# Reset the item coordinates according the current size of the plot.
2443	if { [info exists _limits($_curFldName)] } {
2444	foreach { vmin vmax } $_limits($_curFldName) break
2445	$c itemconfigure vmin -text [format %g $vmin]
2446	$c itemconfigure vmax -text [format %g $vmax]
2447	}
2448	set y 2
2449	# If there's a legend title, move the title to the correct position
2450	if { $title != "" } {
2451	$c itemconfigure title -text $title
2452	$c coords title $x $y
2453	incr y $lineht
2454	}
2455	$c coords vmax $x $y
2456	incr y $lineht
2457	$c coords colormap $x $y
2458	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2459	$c raise sensor
2460	$c coords vmin $x [expr {$h - 2}]
2461	}
2462
2463	#
2464	# EnterLegend --
2465	#
2466	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2467	SetLegendTip $x $y
2468	}
2469
2470	#
2471	# MotionLegend --
2472	#
2473	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2474	Rappture::Tooltip::tooltip cancel
2475	set c $itk_component(view)
2476	set cw [winfo width $c]
2477	set ch [winfo height $c]
2478	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2479	SetLegendTip $x $y
2480	}
2481	}
2482
2483	#
2484	# LeaveLegend --
2485	#
2486	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2487	Rappture::Tooltip::tooltip cancel
2488	.rappturetooltip configure -icon ""
2489	}
2490
2491	#
2492	# SetLegendTip --
2493	#
2494	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2495	set fname $_curFldName
2496	set c $itk_component(view)
2497	set w [winfo width $c]
2498	set h [winfo height $c]
2499	set font "Arial 8"
2500	set lineht [font metrics $font -linespace]
2501
2502	set ih [image height $_image(legend)]
2503	# Subtract off the offset of the color ramp from the top of the canvas
2504	set iy [expr $y - ($lineht + 2)]
2505
2506	if { [string match "component*" $fname] } {
2507	set title ""
2508	} else {
2509	if { [info exists _fields($fname)] } {
2510	foreach { title units } $_fields($fname) break
2511	if { $units != "" } {
2512	set title [format "%s (%s)" $title $units]
2513	}
2514	} else {
2515	set title $fname
2516	}
2517	}
2518	# If there's a legend title, increase the offset by the line height.
2519	if { $title != "" } {
2520	incr iy -$lineht
2521	}
2522
2523	# Make a swatch of the selected color
2524	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2525	return
2526	}
2527
2528	if { ![info exists _image(swatch)] } {
2529	set _image(swatch) [image create photo -width 24 -height 24]
2530	}
2531	set color [eval format "\#%02x%02x%02x" $pixel]
2532	$_image(swatch) put black -to 0 0 23 23
2533	$_image(swatch) put $color -to 1 1 22 22
2534
2535	# Compute the value of the point
2536	if { [info exists _limits($fname)] } {
2537	foreach { vmin vmax } $_limits($fname) break
2538	set t [expr 1.0 - (double($iy) / double($ih-1))]
2539	set value [expr $t * ($vmax - $vmin) + $vmin]
2540	} else {
2541	set value 0.0
2542	}
2543	set tipx [expr $x + 15]
2544	set tipy [expr $y - 5]
2545	.rappturetooltip configure -icon $_image(swatch)
2546	if { [info exists _isolines($y)] } {
2547	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2548	} else {
2549	Rappture::Tooltip::text $c [format "$title %g" $value]
2550	}
2551	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2552	}
2553
2554	# ----------------------------------------------------------------------
2555	# USAGE: _dropdown post
2556	# USAGE: _dropdown unpost
2557	# USAGE: _dropdown select
2558	#
2559	# Used internally to handle the dropdown list for this combobox. The
2560	# post/unpost options are invoked when the list is posted or unposted
2561	# to manage the relief of the controlling button. The select option
2562	# is invoked whenever there is a selection from the list, to assign
2563	# the value back to the gauge.
2564	# ----------------------------------------------------------------------
2565	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2566	set c $itk_component(view)
2567	switch -- $option {
2568	post {
2569	foreach { x1 y1 x2 y2 } [$c bbox title] break
2570	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2571	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2572	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2573	tk_popup $itk_component(fieldmenu) $x $y
2574	}
2575	activate {
2576	$c itemconfigure title -fill red
2577	}
2578	deactivate {
2579	$c itemconfigure title -fill $itk_option(-plotforeground)
2580	}
2581	invoke {
2582	$itk_component(field) value $_curFldLabel
2583	AdjustSetting -field
2584	}
2585	default {
2586	error "bad option \"$option\": should be post, unpost, select"
2587	}
2588	}
2589	}
2590
2591	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2592	if { $_settings(-isheightmap) } {
2593	set val $_settings(-heightmapscale)
2594	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2595	return $sval
2596	}
2597	return 0
2598	}
2599
2600	itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2601	array set positions {
2602	front "0.707107 0.707107 0 0"
2603	back "0 0 0.707107 0.707107"
2604	left "0.5 0.5 -0.5 -0.5"
2605	right "0.5 0.5 0.5 0.5"
2606	top "1 0 0 0"
2607	bottom "0 1 0 0"
2608	}
2609	foreach name { -qw -qx -qy -qz } value $positions($side) {
2610	set _view($name) $value
2611	}
2612	set q [ViewToQuaternion]
2613	$_arcball quaternion $q
2614	SendCmd "camera orient $q"
2615	SendCmd "camera reset"
2616	set _view(-xpan) 0
2617	set _view(-ypan) 0
2618	set _view(-zoom) 1.0
2619	}
2620
2621	itcl::body Rappture::VtkHeightmapViewer::UpdateContourList {} {
2622	if {$_currentNumIsolines == 0} {
2623	set _contourList ""
2624	return
2625	}
2626	if { ![info exists _limits($_curFldName)] } {
2627	return
2628	}
2629	foreach { vmin vmax } $_limits($_curFldName) break
2630	set v [blt::vector create \#auto]
2631	$v seq $vmin $vmax [expr $_currentNumIsolines+2]
2632	$v delete end 0
2633	set _contourList [$v range 0 end]
2634	blt::vector destroy $v
2635	}

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