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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 3413

Last change on this file since 3413 was 3413, checked in by ldelgass, 11 years ago
Fix typo
File size: 80.2 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) 2004-2012 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkHeightmapViewer.width 4i widgetDefault
19	option add VtkHeightmapViewercursor crosshair widgetDefault
20	option add *VtkHeightmapViewer.height 4i widgetDefault
21	option add *VtkHeightmapViewer.foreground black widgetDefault
22	option add *VtkHeightmapViewer.controlBackground gray widgetDefault
23	option add *VtkHeightmapViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkHeightmapViewer.plotBackground black widgetDefault
25	option add *VtkHeightmapViewer.plotForeground white widgetDefault
26	option add *VtkHeightmapViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkHeightmapViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkHeightmapViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkHeightmapViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40	itk_option define -mode mode Mode "contour"
41
42	constructor { hostlist args } {
43	Rappture::VisViewer::constructor $hostlist
44	} {
45	# defined below
46	}
47	destructor {
48	# defined below
49	}
50	public proc SetServerList { namelist } {
51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
52	}
53	public method add {dataobj {settings ""}}
54	public method camera {option args}
55	public method delete {args}
56	public method disconnect {}
57	public method download {option args}
58	public method get {args}
59	public method isconnected {}
60	public method limits { dataobj }
61	public method sendto { string }
62	public method parameters {title args} {
63	# do nothing
64	}
65	public method scale {args}
66
67	protected method Connect {}
68	protected method CurrentDatasets {args}
69	protected method Disconnect {}
70	protected method DoResize {}
71	protected method DoContour {}
72	protected method DoRotate {}
73	protected method AdjustSetting {what {value ""}}
74	protected method AdjustMode {}
75	protected method InitSettings { args }
76	protected method Pan {option x y}
77	protected method Pick {x y}
78	protected method Rebuild {}
79	protected method ReceiveDataset { args }
80	protected method ReceiveImage { args }
81	protected method ReceiveLegend { colormap title min max size }
82	protected method Rotate {option x y}
83	protected method SendCmd {string}
84	protected method SendCmdNoWait {string}
85	protected method Zoom {option}
86
87	# The following methods are only used by this class.
88	private method BuildAxisTab {}
89	private method BuildCameraTab {}
90	private method BuildColormap { name colors }
91	private method ResetColormap { color }
92	private method BuildContourTab {}
93	private method BuildDownloadPopup { widget command }
94	private method Combo { option }
95	private method ConvertToVtkData { dataobj comp }
96	private method DrawLegend { title }
97	private method EnterLegend { x y }
98	private method EventuallyContour { numContours }
99	private method EventuallyRequestLegend {}
100	private method EventuallyResize { w h }
101	private method EventuallyRotate { q }
102	private method GetImage { args }
103	private method GetVtkData { args }
104	private method IsValidObject { dataobj }
105	private method LeaveLegend {}
106	private method MotionLegend { x y }
107	private method PanCamera {}
108	private method RequestLegend {}
109	private method SetCurrentColormap { stylelist }
110	private method SetLegendTip { x y }
111	private method SetObjectStyle { dataobj comp }
112	private method GetHeightmapScale {}
113	private method EnterIsoline { x y value }
114	private method LeaveIsoline {}
115	private method SetIsolineTip { x y value }
116	private method ResetAxes {}
117
118	private variable _arcball ""
119	private variable _outbuf ; # buffer for outgoing commands
120
121	private variable _dlist "" ; # list of data objects
122	private variable _obj2datasets
123	private variable _obj2ovride ; # maps dataobj => style override
124	private variable _comp2scale; # maps dataset to the heightmap scale.
125	private variable _datasets ; # contains all the dataobj-component
126	; # datasets in the server
127	private variable _colormaps ; # contains all the colormaps
128	; # in the server.
129
130	# The name of the current colormap used. The colormap is global to all
131	# heightmaps displayed.
132	private variable _currentColormap "" ;
133
134	private variable _click ; # info used for rotate operations
135	private variable _limits ; # Overall limits for all dataobjs
136	# using the viewer.
137	private variable _view ; # view params for 3D view
138	private variable _settings
139	private variable _initialStyle ""; # First found style in dataobjects.
140	private variable _reset 1; # Indicates if camera needs to be reset
141	# to starting position.
142	private variable _beforeConnect 1; # Indicates if camera needs to be reset
143	# to starting position.
144
145	private variable _first "" ; # This is the topmost dataset.
146	private variable _start 0
147	private variable _buffering 0
148	private variable _title ""
149
150	common _downloadPopup; # download options from popup
151	private common _hardcopy
152	private variable _width 0
153	private variable _height 0
154	private variable _resizePending 0
155	private variable _contourPending 0
156	private variable _rotatePending 0
157	private variable _legendPending 0
158	private variable _fieldNames {}
159	private variable _fields
160	private variable _curFldName ""
161	private variable _curFldLabel ""
162	private variable _numContours 0
163	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
164	}
165
166	itk::usual VtkHeightmapViewer {
167	keep -background -foreground -cursor -font
168	keep -plotbackground -plotforeground -mode
169	}
170
171	# ----------------------------------------------------------------------
172	# CONSTRUCTOR
173	# ----------------------------------------------------------------------
174	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
175	set _serverType "vtkvis"
176
177	# Rebuild event
178	$_dispatcher register !rebuild
179	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
180
181	# Resize event
182	$_dispatcher register !resize
183	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
184
185	# Recontour event
186	$_dispatcher register !contour
187	$_dispatcher dispatch $this !contour "[itcl::code $this DoContour]; list"
188
189	# Rotate event
190	$_dispatcher register !rotate
191	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
192
193	# Legend event
194	$_dispatcher register !legend
195	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
196
197	#
198	# Populate parser with commands handle incoming requests
199	#
200	$_parser alias image [itcl::code $this ReceiveImage]
201	$_parser alias dataset [itcl::code $this ReceiveDataset]
202	$_parser alias legend [itcl::code $this ReceiveLegend]
203	$_parser alias viserror [itcl::code $this ReceiveError]
204
205	# Initialize the view to some default parameters.
206	array set _view {
207	qw 0.36
208	qx 0.25
209	qy 0.50
210	qz 0.70
211	zoom 1.0
212	xpan 0
213	ypan 0
214	ortho 1
215	}
216	set _arcball [blt::arcball create 100 100]
217	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
218	$_arcball quaternion $q
219
220	array set _settings [subst {
221	axisFlymode "static"
222	axisMinorTicks 1
223	stretchToFit 0
224	axisLabels 1
225	axisVisible 1
226	axisXGrid 0
227	axisYGrid 0
228	axisZGrid 0
229	colormapVisible 1
230	edges 0
231	field "Default"
232	heightmapOpacity 100
233	heightmapScale 50
234	isHeightmap 0
235	isolines 10
236	isolinesVisible 1
237	isolineColor black
238	legendVisible 1
239	lighting 0
240	outline 0
241	wireframe 0
242	}]
243
244	itk_component add view {
245	canvas $itk_component(plotarea).view \
246	-highlightthickness 0 -borderwidth 0
247	} {
248	usual
249	ignore -highlightthickness -borderwidth -background
250	}
251
252	itk_component add fieldmenu {
253	menu $itk_component(plotarea).menu \
254	-relief flat \
255	-tearoff no
256	} {
257	usual
258	ignore -background -foreground -relief -tearoff
259	}
260	set c $itk_component(view)
261	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
262	bind $c <4> [itcl::code $this Zoom in 0.25]
263	bind $c <5> [itcl::code $this Zoom out 0.25]
264	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
265	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
266	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
267	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
268	bind $c <Enter> "focus %W"
269	bind $c <Control-F1> [itcl::code $this ToggleConsole]
270
271	# Fix the scrollregion in case we go off screen
272	$c configure -scrollregion [$c bbox all]
273
274	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
275	set _map(cwidth) -1
276	set _map(cheight) -1
277	set _map(zoom) 1.0
278	set _map(original) ""
279
280	set f [$itk_component(main) component controls]
281	itk_component add reset {
282	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
283	-highlightthickness 0 \
284	-image [Rappture::icon reset-view] \
285	-command [itcl::code $this Zoom reset]
286	} {
287	usual
288	ignore -highlightthickness
289	}
290	pack $itk_component(reset) -side top -padx 2 -pady 2
291	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
292
293	itk_component add zoomin {
294	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
295	-highlightthickness 0 \
296	-image [Rappture::icon zoom-in] \
297	-command [itcl::code $this Zoom in]
298	} {
299	usual
300	ignore -highlightthickness
301	}
302	pack $itk_component(zoomin) -side top -padx 2 -pady 2
303	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
304
305	itk_component add zoomout {
306	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
307	-highlightthickness 0 \
308	-image [Rappture::icon zoom-out] \
309	-command [itcl::code $this Zoom out]
310	} {
311	usual
312	ignore -highlightthickness
313	}
314	pack $itk_component(zoomout) -side top -padx 2 -pady 2
315	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
316
317	itk_component add mode {
318	Rappture::PushButton $f.mode \
319	-onimage [Rappture::icon surface] \
320	-offimage [Rappture::icon surface] \
321	-variable [itcl::scope _settings(isHeightmap)] \
322	-command [itcl::code $this AdjustSetting isHeightmap] \
323	}
324	Rappture::Tooltip::for $itk_component(mode) \
325	"Toggle the surface/contour on/off"
326	pack $itk_component(mode) -padx 2 -pady 2
327
328	if { [catch {
329	BuildContourTab
330	BuildAxisTab
331	BuildCameraTab
332	} errs] != 0 } {
333	global errorInfo
334	puts stderr "errs=$errs errorInfo=$errorInfo"
335	}
336	set _image(legend) [image create photo]
337
338	# Hack around the Tk panewindow. The problem is that the requested
339	# size of the 3d view isn't set until an image is retrieved from
340	# the server. So the panewindow uses the tiny size.
341	set w 10000
342	pack forget $itk_component(view)
343	blt::table $itk_component(plotarea) \
344	0,0 $itk_component(view) -fill both -reqwidth $w
345	blt::table configure $itk_component(plotarea) c1 -resize none
346
347	# Bindings for panning via mouse
348	bind $itk_component(view) <ButtonPress-2> \
349	[itcl::code $this Pan click %x %y]
350	bind $itk_component(view) <B2-Motion> \
351	[itcl::code $this Pan drag %x %y]
352	bind $itk_component(view) <ButtonRelease-2> \
353	[itcl::code $this Pan release %x %y]
354
355	bind $itk_component(view) <ButtonRelease-3> \
356	[itcl::code $this Pick %x %y]
357
358	# Bindings for panning via keyboard
359	bind $itk_component(view) <KeyPress-Left> \
360	[itcl::code $this Pan set -10 0]
361	bind $itk_component(view) <KeyPress-Right> \
362	[itcl::code $this Pan set 10 0]
363	bind $itk_component(view) <KeyPress-Up> \
364	[itcl::code $this Pan set 0 -10]
365	bind $itk_component(view) <KeyPress-Down> \
366	[itcl::code $this Pan set 0 10]
367	bind $itk_component(view) <Shift-KeyPress-Left> \
368	[itcl::code $this Pan set -2 0]
369	bind $itk_component(view) <Shift-KeyPress-Right> \
370	[itcl::code $this Pan set 2 0]
371	bind $itk_component(view) <Shift-KeyPress-Up> \
372	[itcl::code $this Pan set 0 -2]
373	bind $itk_component(view) <Shift-KeyPress-Down> \
374	[itcl::code $this Pan set 0 2]
375
376	# Bindings for zoom via keyboard
377	bind $itk_component(view) <KeyPress-Prior> \
378	[itcl::code $this Zoom out]
379	bind $itk_component(view) <KeyPress-Next> \
380	[itcl::code $this Zoom in]
381
382	bind $itk_component(view) <Enter> "focus $itk_component(view)"
383
384	if {[string equal "x11" [tk windowingsystem]]} {
385	# Bindings for zoom via mouse
386	bind $itk_component(view) <4> [itcl::code $this Zoom out]
387	bind $itk_component(view) <5> [itcl::code $this Zoom in]
388	}
389
390	set _image(download) [image create photo]
391
392	eval itk_initialize $args
393	Connect
394	set _beforeConnect 0
395	}
396
397	# ----------------------------------------------------------------------
398	# DESTRUCTOR
399	# ----------------------------------------------------------------------
400	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
401	Disconnect
402	image delete $_image(plot)
403	image delete $_image(download)
404	catch { blt::arcball destroy $_arcball }
405	}
406
407	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
408	if { $_width < 2 } {
409	set _width 500
410	}
411	if { $_height < 2 } {
412	set _height 500
413	}
414	set _start [clock clicks -milliseconds]
415	SendCmd "screen size [expr $_width - 20] $_height"
416	EventuallyRequestLegend
417	set _resizePending 0
418	}
419
420	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
421	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
422	SendCmd "camera orient $q"
423	set _rotatePending 0
424	}
425
426	itcl::body Rappture::VtkHeightmapViewer::DoContour {} {
427	foreach dataset [CurrentDatasets -all] {
428	foreach {dataobj comp} [split $dataset -] break
429	#SendCmd "heightmap numcontours $_numContours $dataset"
430	}
431	set _contourPending 0
432	}
433
434	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
435	if { !$_legendPending } {
436	set _legendPending 1
437	$_dispatcher event -idle !legend
438	}
439	}
440
441	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
442	set _width $w
443	set _height $h
444	$_arcball resize $w $h
445	if { !$_resizePending } {
446	set _resizePending 1
447	$_dispatcher event -after 400 !resize
448	}
449	}
450
451	itcl::body Rappture::VtkHeightmapViewer::EventuallyContour { numContours } {
452	set _numContours $numContours
453	if { !$_contourPending } {
454	set _contourPending 1
455	$_dispatcher event -after 600 !contour
456	}
457	}
458
459	set rotate_delay 100
460
461	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
462	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
463	if { !$_rotatePending } {
464	set _rotatePending 1
465	global rotate_delay
466	$_dispatcher event -after $rotate_delay !rotate
467	}
468	}
469
470	# ----------------------------------------------------------------------
471	# USAGE: add <dataobj> ?<settings>?
472	#
473	# Clients use this to add a data object to the plot. The optional
474	# <settings> are used to configure the plot. Allowed settings are
475	# -color, -brightness, -width, -linestyle, and -raise.
476	# ----------------------------------------------------------------------
477	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
478	array set params {
479	-color auto
480	-width 1
481	-linestyle solid
482	-brightness 0
483	-raise 0
484	-description ""
485	-param ""
486	-type ""
487	}
488	array set params $settings
489	set params(-description) ""
490	set params(-param) ""
491	foreach {opt val} $settings {
492	if {![info exists params($opt)]} {
493	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
494	}
495	set params($opt) $val
496	}
497	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
498	# can't handle -autocolors yet
499	set params(-color) white
500	}
501	set pos [lsearch -exact $dataobj $_dlist]
502	if {$pos < 0} {
503	lappend _dlist $dataobj
504	}
505	set _obj2ovride($dataobj-color) $params(-color)
506	set _obj2ovride($dataobj-width) $params(-width)
507	set _obj2ovride($dataobj-raise) $params(-raise)
508	$_dispatcher event -idle !rebuild
509	}
510
511
512	# ----------------------------------------------------------------------
513	# USAGE: delete ?<dataobj1> <dataobj2> ...?
514	#
515	# Clients use this to delete a dataobj from the plot. If no dataobjs
516	# are specified, then all dataobjs are deleted. No data objects are
517	# deleted. They are only removed from the display list.
518	#
519	# ----------------------------------------------------------------------
520	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
521	if { [llength $args] == 0} {
522	set args $_dlist
523	}
524	# Delete all specified dataobjs
525	set changed 0
526	foreach dataobj $args {
527	set pos [lsearch -exact $_dlist $dataobj]
528	if { $pos < 0 } {
529	continue; # Don't know anything about it.
530	}
531	# Remove it from the dataobj list.
532	set _dlist [lreplace $_dlist $pos $pos]
533	array unset _obj2ovride $dataobj-*
534	array unset _settings $dataobj-*
535	# Append to the end of the dataobj list.
536	#lappend _dlist $dataobj
537	set changed 1
538	}
539	# If anything changed, then rebuild the plot
540	if { $changed } {
541	$_dispatcher event -idle !rebuild
542	}
543	}
544
545	# ----------------------------------------------------------------------
546	# USAGE: get ?-objects?
547	# USAGE: get ?-visible?
548	# USAGE: get ?-image view?
549	#
550	# Clients use this to query the list of objects being plotted, in
551	# order from bottom to top of this result. The optional "-image"
552	# flag can also request the internal images being shown.
553	# ----------------------------------------------------------------------
554	itcl::body Rappture::VtkHeightmapViewer::get {args} {
555	if {[llength $args] == 0} {
556	set args "-objects"
557	}
558
559	set op [lindex $args 0]
560	switch -- $op {
561	"-objects" {
562	# put the dataobj list in order according to -raise options
563	set dlist {}
564	foreach dataobj $_dlist {
565	if { ![IsValidObject $dataobj] } {
566	continue
567	}
568	if {[info exists _obj2ovride($dataobj-raise)] &&
569	$_obj2ovride($dataobj-raise)} {
570	set dlist [linsert $dlist 0 $dataobj]
571	} else {
572	lappend dlist $dataobj
573	}
574	}
575	return $dlist
576	}
577	"-visible" {
578	set dlist {}
579	foreach dataobj $_dlist {
580	if { ![IsValidObject $dataobj] } {
581	continue
582	}
583	if { ![info exists _obj2ovride($dataobj-raise)] } {
584	# No setting indicates that the object isn't visible.
585	continue
586	}
587	# Otherwise use the -raise parameter to put the object to
588	# the front of the list.
589	if { $_obj2ovride($dataobj-raise) } {
590	set dlist [linsert $dlist 0 $dataobj]
591	} else {
592	lappend dlist $dataobj
593	}
594	}
595	return $dlist
596	}
597	-image {
598	if {[llength $args] != 2} {
599	error "wrong # args: should be \"get -image view\""
600	}
601	switch -- [lindex $args end] {
602	view {
603	return $_image(plot)
604	}
605	default {
606	error "bad image name \"[lindex $args end]\": should be view"
607	}
608	}
609	}
610	default {
611	error "bad option \"$op\": should be -objects or -image"
612	}
613	}
614	}
615
616	# ----------------------------------------------------------------------
617	# USAGE: scale ?<data1> <data2> ...?
618	#
619	# Sets the default limits for the overall plot according to the
620	# limits of the data for all of the given <data> objects. This
621	# accounts for all objects--even those not showing on the screen.
622	# Because of this, the limits are appropriate for all objects as
623	# the user scans through data in the ResultSet viewer.
624	# ----------------------------------------------------------------------
625	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
626	foreach dataobj $args {
627	array set bounds [limits $dataobj]
628	foreach axis { x y v } {
629	foreach {min max} $bounds($axis) break
630	if { ![info exists _limits($axis)] } {
631	set _limits($axis) [list $min $max]
632	continue
633	}
634	foreach {amin amax} $_limits($axis) break
635	if { $amin > $min } {
636	set amin $min
637	}
638	if { $amax < $max } {
639	set amax $max
640	}
641	set _limits($axis) [list $amin $amax]
642	}
643	}
644	}
645
646	# ----------------------------------------------------------------------
647	# USAGE: download coming
648	# USAGE: download controls <downloadCommand>
649	# USAGE: download now
650	#
651	# Clients use this method to create a downloadable representation
652	# of the plot. Returns a list of the form {ext string}, where
653	# "ext" is the file extension (indicating the type of data) and
654	# "string" is the data itself.
655	# ----------------------------------------------------------------------
656	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
657	switch $option {
658	coming {
659	if {[catch {
660	blt::winop snap $itk_component(plotarea) $_image(download)
661	}]} {
662	$_image(download) configure -width 1 -height 1
663	$_image(download) put #000000
664	}
665	}
666	controls {
667	set popup .vtkviewerdownload
668	if { ![winfo exists .vtkviewerdownload] } {
669	set inner [BuildDownloadPopup $popup [lindex $args 0]]
670	} else {
671	set inner [$popup component inner]
672	}
673	set _downloadPopup(image_controls) $inner.image_frame
674	set num [llength [get]]
675	set num [expr {($num == 1) ? "1 result" : "$num results"}]
676	set word [Rappture::filexfer::label downloadWord]
677	$inner.summary configure -text "$word $num in the following format:"
678	update idletasks ;# Fix initial sizes
679	return $popup
680	}
681	now {
682	set popup .vtkviewerdownload
683	if {[winfo exists .vtkviewerdownload]} {
684	$popup deactivate
685	}
686	switch -- $_downloadPopup(format) {
687	"image" {
688	return [$this GetImage [lindex $args 0]]
689	}
690	"vtk" {
691	return [$this GetVtkData [lindex $args 0]]
692	}
693	}
694	return ""
695	}
696	default {
697	error "bad option \"$option\": should be coming, controls, now"
698	}
699	}
700	}
701
702	# ----------------------------------------------------------------------
703	# USAGE: Connect ?<host:port>,<host:port>...?
704	#
705	# Clients use this method to establish a connection to a new
706	# server, or to reestablish a connection to the previous server.
707	# Any existing connection is automatically closed.
708	# ----------------------------------------------------------------------
709	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
710	global readyForNextFrame
711	set readyForNextFrame 1
712	set _reset 1
713	set _hosts [GetServerList "vtkvis"]
714	if { "" == $_hosts } {
715	return 0
716	}
717	set result [VisViewer::Connect $_hosts]
718	if { $result } {
719	set w [winfo width $itk_component(view)]
720	set h [winfo height $itk_component(view)]
721	EventuallyResize $w $h
722	}
723	return $result
724	}
725
726	#
727	# isconnected --
728	#
729	# Indicates if we are currently connected to the visualization server.
730	#
731	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
732	return [VisViewer::IsConnected]
733	}
734
735	#
736	# disconnect --
737	#
738	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
739	Disconnect
740	set _reset 1
741	}
742
743	#
744	# Disconnect --
745	#
746	# Clients use this method to disconnect from the current rendering
747	# server.
748	#
749	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
750	VisViewer::Disconnect
751
752	$_dispatcher cancel !rebuild
753	$_dispatcher cancel !resize
754	$_dispatcher cancel !contour
755	$_dispatcher cancel !rotate
756	$_dispatcher cancel !legend
757	# disconnected -- no more data sitting on server
758	set _outbuf ""
759	array unset _datasets
760	array unset _data
761	array unset _colormaps
762	array unset _obj2datasets
763	global readyForNextFrame
764	set readyForNextFrame 1
765	}
766
767	#
768	# sendto --
769	#
770	itcl::body Rappture::VtkHeightmapViewer::sendto { bytes } {
771	SendBytes "$bytes\n"
772	}
773
774	#
775	# SendCmd
776	#
777	# Send commands off to the rendering server. If we're currently
778	# sending data objects to the server, buffer the commands to be
779	# sent later.
780	#
781	itcl::body Rappture::VtkHeightmapViewer::SendCmd {string} {
782	if { $_buffering } {
783	append _outbuf $string "\n"
784	} else {
785	SendBytes "$string\n"
786	}
787	}
788
789	#
790	# SendCmdNoWait
791	#
792	# Send commands off to the rendering server. If we're currently
793	# sending data objects to the server, buffer the commands to be
794	# sent later.
795	#
796	itcl::body Rappture::VtkHeightmapViewer::SendCmdNoWait {string} {
797	if { $_buffering } {
798	append _outbuf $string "\n"
799	} else {
800	SendBytes "$string\n"
801	}
802	}
803
804	# ----------------------------------------------------------------------
805	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
806	#
807	# Invoked automatically whenever the "image" command comes in from
808	# the rendering server. Indicates that binary image data with the
809	# specified <size> will follow.
810	# ----------------------------------------------------------------------
811	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
812	global readyForNextFrame
813	set readyForNextFrame 1
814	array set info {
815	-token "???"
816	-bytes 0
817	-type image
818	}
819	array set info $args
820	set bytes [ReceiveBytes $info(-bytes)]
821	if { $info(-type) == "image" } {
822	if 0 {
823	set f [open "last.ppm" "w"]
824	puts $f $bytes
825	close $f
826	}
827	$_image(plot) configure -data $bytes
828	set time [clock seconds]
829	set date [clock format $time]
830	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
831	if { $_start > 0 } {
832	set finish [clock clicks -milliseconds]
833	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
834	set _start 0
835	}
836	} elseif { $info(type) == "print" } {
837	set tag $this-print-$info(-token)
838	set _hardcopy($tag) $bytes
839	}
840	}
841
842	#
843	# ReceiveDataset --
844	#
845	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
846	if { ![isconnected] } {
847	return
848	}
849	set option [lindex $args 0]
850	switch -- $option {
851	"scalar" {
852	set option [lindex $args 1]
853	switch -- $option {
854	"world" {
855	foreach { x y z value tag } [lrange $args 2 end] break
856	}
857	"pixel" {
858	foreach { x y value tag } [lrange $args 2 end] break
859	}
860	}
861	}
862	"vector" {
863	set option [lindex $args 1]
864	switch -- $option {
865	"world" {
866	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
867	}
868	"pixel" {
869	foreach { x y vx vy vz tag } [lrange $args 2 end] break
870	}
871	}
872	}
873	"names" {
874	foreach { name } [lindex $args 1] {
875	#puts stderr "Dataset: $name"
876	}
877	}
878	default {
879	error "unknown dataset option \"$option\" from server"
880	}
881	}
882	}
883
884	# ----------------------------------------------------------------------
885	# USAGE: Rebuild
886	#
887	# Called automatically whenever something changes that affects the
888	# data in the widget. Clears any existing data and rebuilds the
889	# widget to display new data.
890	# ----------------------------------------------------------------------
891	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
892	set w [winfo width $itk_component(view)]
893	set h [winfo height $itk_component(view)]
894	if { $w < 2 \|\| $h < 2 } {
895	$_dispatcher event -idle !rebuild
896	return
897	}
898
899	set _buffering 1
900	# Turn on buffering of commands to the server. We don't want to
901	# be preempted by a server disconnect/reconnect (which automatically
902	# generates a new call to Rebuild).
903	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
904	set _width $w
905	set _height $h
906	$_arcball resize $w $h
907	DoResize
908	if { $_settings(stretchToFit) } {
909	AdjustSetting stretchToFit
910	}
911	}
912	if { $_reset } {
913	if 1 {
914	# Tell the server the name of the tool, the version, and dataset
915	# that we are rendering. Have to do it here because we don't know
916	# what data objects are using the renderer until be get here.
917	global env
918
919	set info {}
920	set user "???"
921	if { [info exists env(USER)] } {
922	set user $env(USER)
923	}
924	set session "???"
925	if { [info exists env(SESSION)] } {
926	set session $env(SESSION)
927	}
928	lappend info "hub" [exec hostname]
929	lappend info "client" "vtkheightmapviewer"
930	lappend info "user" $user
931	lappend info "session" $session
932	SendCmd "clientinfo [list $info]"
933	}
934	InitSettings isHeightmap background
935	#
936	# Reset the camera and other view parameters
937	#
938	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
939	SendCmd "axis lrot z 90"
940	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
941	$_arcball quaternion $q
942	if {$_settings(isHeightmap) } {
943	SendCmd "camera reset"
944	if { $_view(ortho)} {
945	SendCmd "camera mode ortho"
946	} else {
947	SendCmd "camera mode persp"
948	}
949	}
950	DoRotate
951	PanCamera
952	}
953	set _first ""
954
955	#SendCmd "imgflush"
956
957	set _first ""
958	# Start off with no datasets are visible.
959	SendCmd "dataset visible 0"
960	set scale [GetHeightmapScale]
961	foreach dataobj [get -objects] {
962	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
963	set _first $dataobj
964	}
965	scale $dataobj
966	set _obj2datasets($dataobj) ""
967	foreach comp [$dataobj components] {
968	set tag $dataobj-$comp
969	if { ![info exists _datasets($tag)] } {
970	set bytes [$dataobj vtkdata $comp]
971	if 1 {
972	set f [open /tmp/vtkheightmap.vtk "w"]
973	puts $f $bytes
974	close $f
975	}
976	set length [string length $bytes]
977	if 1 {
978	set info {}
979	lappend info "tool_id" [$dataobj hints toolId]
980	lappend info "tool_name" [$dataobj hints toolName]
981	lappend info "tool_version" [$dataobj hints toolRevision]
982	lappend info "tool_title" [$dataobj hints toolTitle]
983	lappend info "dataset_label" [$dataobj hints label]
984	lappend info "dataset_size" $length
985	lappend info "dataset_tag" $tag
986	SendCmd [list "clientinfo" $info]
987	}
988	append _outbuf "dataset add $tag data follows $length\n"
989	append _outbuf $bytes
990	set _datasets($tag) 1
991	SetObjectStyle $dataobj $comp
992	}
993	lappend _obj2datasets($dataobj) $tag
994	if { [info exists _obj2ovride($dataobj-raise)] } {
995	SendCmd "heightmap visible 1 $tag"
996	}
997	if { ![info exists _comp2scale($tag)] \|\|
998	$_comp2scale($tag) != $scale } {
999	SendCmd "heightmap heightscale $scale $tag"
1000	set _comp2scale($tag) $scale
1001	}
1002	}
1003	}
1004	if { $_first != "" } {
1005	$itk_component(field) choices delete 0 end
1006	$itk_component(fieldmenu) delete 0 end
1007	array unset _fields
1008	foreach cname [$_first components] {
1009	foreach fname [$_first fieldnames $cname] {
1010	if { [info exists _fields($fname)] } {
1011	continue
1012	}
1013	foreach { label units components } \
1014	[$_first fieldinfo $fname] break
1015	$itk_component(field) choices insert end "$fname" "$label"
1016	$itk_component(fieldmenu) add radiobutton -label "$label" \
1017	-value $label -variable [itcl::scope _curFldLabel] \
1018	-selectcolor red \
1019	-activebackground $itk_option(-plotbackground) \
1020	-activeforeground $itk_option(-plotforeground) \
1021	-font "Arial 8" \
1022	-command [itcl::code $this Combo invoke]
1023	set _fields($fname) [list $label $units $components]
1024	set _curFldName $fname
1025	set _curFldLabel $label
1026	}
1027	}
1028	$itk_component(field) value $_curFldLabel
1029	}
1030	InitSettings stretchToFit
1031
1032	if { $_reset } {
1033	SendCmd "axis tickpos outside"
1034	foreach axis { x y z } {
1035	SendCmd "axis lformat $axis %g"
1036	}
1037
1038	foreach axis { x y z } {
1039	set label [$_first hints ${axis}label]
1040	if { $label == "" } {
1041	if {$axis == "z"} {
1042	if { $_curFldName == "component" } {
1043	set label [string toupper $axis]
1044	} else {
1045	set label $_curFldLabel
1046	}
1047	} else {
1048	set label [string toupper $axis]
1049	}
1050	}
1051	# May be a space in the axis label.
1052	SendCmd [list axis name $axis $label]
1053
1054	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1055	set units [lindex $_fields($_curFldName) 1]
1056	} else {
1057	set units [$_first hints ${axis}units]
1058	}
1059	if { $units != "" } {
1060	# May be a space in the axis units.
1061	SendCmd [list axis units $axis $units]
1062	}
1063	}
1064	#
1065	# Reset the camera and other view parameters
1066	#
1067	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
1068	ResetAxes
1069	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1070	$_arcball quaternion $q
1071	if {$_settings(isHeightmap) } {
1072	SendCmd "camera reset"
1073	if { $_view(ortho)} {
1074	SendCmd "camera mode ortho"
1075	} else {
1076	SendCmd "camera mode persp"
1077	}
1078	}
1079	DoRotate
1080	PanCamera
1081	InitSettings axisXGrid axisYGrid axisZGrid \
1082	axisVisible axisLabels
1083	InitSettings heightmapOpacity \
1084	heightmapScale lighting \
1085	colormap field outline \
1086	edges heightmapOpacity wireframe
1087	set _reset 0
1088	}
1089	global readyForNextFrame
1090	set readyForNextFrame 0; # Don't advance to the next frame
1091	set _buffering 0; # Turn off buffering.
1092
1093	# Actually write the commands to the server socket. If it fails, we don't
1094	# care. We're finished here.
1095	blt::busy hold $itk_component(hull)
1096	sendto $_outbuf;
1097	blt::busy release $itk_component(hull)
1098	set _outbuf ""; # Clear the buffer.
1099	}
1100
1101	# ----------------------------------------------------------------------
1102	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1103	#
1104	# Returns a list of server IDs for the current datasets being displayed. This
1105	# is normally a single ID, but it might be a list of IDs if the current data
1106	# object has multiple components.
1107	# ----------------------------------------------------------------------
1108	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1109	set flag [lindex $args 0]
1110	switch -- $flag {
1111	"-all" {
1112	if { [llength $args] > 1 } {
1113	error "CurrentDatasets: can't specify dataobj after \"-all\""
1114	}
1115	set dlist [get -objects]
1116	}
1117	"-visible" {
1118	if { [llength $args] > 1 } {
1119	set dlist {}
1120	set args [lrange $args 1 end]
1121	foreach dataobj $args {
1122	if { [info exists _obj2ovride($dataobj-raise)] } {
1123	lappend dlist $dataobj
1124	}
1125	}
1126	} else {
1127	set dlist [get -visible]
1128	}
1129	}
1130	default {
1131	set dlist $args
1132	}
1133	}
1134	set rlist ""
1135	foreach dataobj $dlist {
1136	foreach comp [$dataobj components] {
1137	set tag $dataobj-$comp
1138	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1139	lappend rlist $tag
1140	}
1141	}
1142	}
1143	return $rlist
1144	}
1145
1146	# ----------------------------------------------------------------------
1147	# USAGE: Zoom in
1148	# USAGE: Zoom out
1149	# USAGE: Zoom reset
1150	#
1151	# Called automatically when the user clicks on one of the zoom
1152	# controls for this widget. Changes the zoom for the current view.
1153	# ----------------------------------------------------------------------
1154	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1155	switch -- $option {
1156	"in" {
1157	set _view(zoom) [expr {$_view(zoom)*1.25}]
1158	SendCmd "camera zoom $_view(zoom)"
1159	}
1160	"out" {
1161	set _view(zoom) [expr {$_view(zoom)*0.8}]
1162	SendCmd "camera zoom $_view(zoom)"
1163	}
1164	"reset" {
1165	array set _view {
1166	qw 0.36
1167	qx 0.25
1168	qy 0.50
1169	qz 0.70
1170	zoom 1.0
1171	xpan 0
1172	ypan 0
1173	}
1174	SendCmd "camera reset all"
1175	if { $_first != "" } {
1176	set location [$_first hints camera]
1177	if { $location != "" } {
1178	array set _view $location
1179	}
1180	}
1181	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1182	$_arcball quaternion $q
1183	DoRotate
1184	}
1185	}
1186	}
1187
1188	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1189	set x $_view(xpan)
1190	set y $_view(ypan)
1191	SendCmd "camera pan $x $y"
1192	}
1193
1194
1195	# ----------------------------------------------------------------------
1196	# USAGE: Rotate click <x> <y>
1197	# USAGE: Rotate drag <x> <y>
1198	# USAGE: Rotate release <x> <y>
1199	#
1200	# Called automatically when the user clicks/drags/releases in the
1201	# plot area. Moves the plot according to the user's actions.
1202	# ----------------------------------------------------------------------
1203	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1204	switch -- $option {
1205	"click" {
1206	$itk_component(view) configure -cursor fleur
1207	set _click(x) $x
1208	set _click(y) $y
1209	}
1210	"drag" {
1211	if {[array size _click] == 0} {
1212	Rotate click $x $y
1213	} else {
1214	set w [winfo width $itk_component(view)]
1215	set h [winfo height $itk_component(view)]
1216	if {$w <= 0 \|\| $h <= 0} {
1217	return
1218	}
1219
1220	if {[catch {
1221	# this fails sometimes for no apparent reason
1222	set dx [expr {double($x-$_click(x))/$w}]
1223	set dy [expr {double($y-$_click(y))/$h}]
1224	}]} {
1225	return
1226	}
1227	if { $dx == 0 && $dy == 0 } {
1228	return
1229	}
1230	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1231	EventuallyRotate $q
1232	set _click(x) $x
1233	set _click(y) $y
1234	}
1235	}
1236	"release" {
1237	Rotate drag $x $y
1238	$itk_component(view) configure -cursor ""
1239	catch {unset _click}
1240	}
1241	default {
1242	error "bad option \"$option\": should be click, drag, release"
1243	}
1244	}
1245	}
1246
1247	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1248	foreach tag [CurrentDatasets -visible] {
1249	SendCmd "dataset getscalar pixel $x $y $tag"
1250	}
1251	}
1252
1253	# ----------------------------------------------------------------------
1254	# USAGE: $this Pan click x y
1255	# $this Pan drag x y
1256	# $this Pan release x y
1257	#
1258	# Called automatically when the user clicks on one of the zoom
1259	# controls for this widget. Changes the zoom for the current view.
1260	# ----------------------------------------------------------------------
1261	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1262	switch -- $option {
1263	"set" {
1264	set w [winfo width $itk_component(view)]
1265	set h [winfo height $itk_component(view)]
1266	set x [expr $x / double($w)]
1267	set y [expr $y / double($h)]
1268	set _view(xpan) [expr $_view(xpan) + $x]
1269	set _view(ypan) [expr $_view(ypan) + $y]
1270	PanCamera
1271	return
1272	}
1273	"click" {
1274	set _click(x) $x
1275	set _click(y) $y
1276	$itk_component(view) configure -cursor hand1
1277	}
1278	"drag" {
1279	if { ![info exists _click(x)] } {
1280	set _click(x) $x
1281	}
1282	if { ![info exists _click(y)] } {
1283	set _click(y) $y
1284	}
1285	set w [winfo width $itk_component(view)]
1286	set h [winfo height $itk_component(view)]
1287	set dx [expr ($_click(x) - $x)/double($w)]
1288	set dy [expr ($_click(y) - $y)/double($h)]
1289	set _click(x) $x
1290	set _click(y) $y
1291	set _view(xpan) [expr $_view(xpan) - $dx]
1292	set _view(ypan) [expr $_view(ypan) - $dy]
1293	PanCamera
1294	}
1295	"release" {
1296	Pan drag $x $y
1297	$itk_component(view) configure -cursor ""
1298	}
1299	default {
1300	error "unknown option \"$option\": should set, click, drag, or release"
1301	}
1302	}
1303	}
1304
1305	# ----------------------------------------------------------------------
1306	# USAGE: InitSettings <what> ?<value>?
1307	#
1308	# Used internally to update rendering settings whenever parameters
1309	# change in the popup settings panel. Sends the new settings off
1310	# to the back end.
1311	# ----------------------------------------------------------------------
1312	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1313	foreach spec $args {
1314	if { [info exists _settings($_first-$spec)] } {
1315	# Reset global setting with dataobj specific setting
1316	set _settings($spec) $_settings($_first-$spec)
1317	}
1318	AdjustSetting $spec
1319	}
1320	}
1321
1322	#
1323	# AdjustSetting --
1324	#
1325	# Changes/updates a specific setting in the widget. There are
1326	# usually user-setable option. Commands are sent to the render
1327	# server.
1328	#
1329	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1330	if { $_beforeConnect } {
1331	return
1332	}
1333	switch -- $what {
1334	"heightmapOpacity" {
1335	set val $_settings(heightmapOpacity)
1336	set sval [expr { 0.01 * double($val) }]
1337	foreach dataset [CurrentDatasets -all] {
1338	SendCmd "heightmap opacity $sval $dataset"
1339	}
1340	}
1341	"wireframe" {
1342	set bool $_settings(wireframe)
1343	foreach dataset [CurrentDatasets -all] {
1344	SendCmd "heightmap wireframe $bool $dataset"
1345	}
1346	}
1347	"colormapVisible" {
1348	set bool $_settings(colormapVisible)
1349	foreach dataset [CurrentDatasets -all] {
1350	SendCmd "heightmap surface $bool $dataset"
1351	}
1352	}
1353	"isolinesVisible" {
1354	set bool $_settings(isolinesVisible)
1355	foreach dataset [CurrentDatasets -all] {
1356	SendCmd "heightmap isolines $bool $dataset"
1357	}
1358	}
1359	"lighting" {
1360	if { $_settings(isHeightmap) } {
1361	set bool $_settings(lighting)
1362	SendCmd "heightmap lighting $bool"
1363	} else {
1364	SendCmd "heightmap lighting 0"
1365	}
1366	}
1367	"edges" {
1368	set bool $_settings(edges)
1369	foreach dataset [CurrentDatasets -all] {
1370	SendCmd "heightmap edges $bool $dataset"
1371	}
1372	}
1373	"axisVisible" {
1374	set bool $_settings(axisVisible)
1375	SendCmd "axis visible all $bool"
1376	}
1377	"axisLabels" {
1378	set bool $_settings(axisLabels)
1379	SendCmd "axis labels all $bool"
1380	}
1381	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1382	set axis [string tolower [string range $what 4 4]]
1383	set bool $_settings($what)
1384	SendCmd "axis grid $axis $bool"
1385	}
1386	"axisFlymode" {
1387	set mode [$itk_component(axisflymode) value]
1388	set mode [$itk_component(axisflymode) translate $mode]
1389	set _settings($what) $mode
1390	SendCmd "axis flymode $mode"
1391	}
1392	"axisMinorTicks" {
1393	set bool $_settings(axisMinorTicks)
1394	foreach axis { x y z } {
1395	SendCmd "axis minticks ${axis} $bool"
1396	}
1397	}
1398	"isolines" {
1399	set n $_settings($what)
1400	EventuallyContour $n
1401	}
1402	"isolinesVisible" {
1403	set bool $_settings($what)
1404	foreach dataset [CurrentDatasets -all] {
1405	SendCmd "heightmap isolines $bool $dataset"
1406	}
1407	}
1408	"colormapVisible" {
1409	set bool $_settings($what)
1410	foreach dataset [CurrentDatasets -all] {
1411	SendCmd "heightmap surface $bool $dataset"
1412	}
1413	}
1414	"background" {
1415	set bgcolor [$itk_component(background) value]
1416	array set fgcolors {
1417	"black" "white"
1418	"white" "black"
1419	"grey" "black"
1420	}
1421	configure -plotbackground $bgcolor \
1422	-plotforeground $fgcolors($bgcolor)
1423	$itk_component(view) delete "legend"
1424	DrawLegend $_curFldName
1425	}
1426	"isolineColor" {
1427	set color [$itk_component(isolinecolor) value]
1428	if { $color == "none" } {
1429	if { $_settings(isolinesVisible) } {
1430	SendCmd "heightmap isolines 0"
1431	set _settings(isolinesVisible) 0
1432	}
1433	} else {
1434	if { !$_settings(isolinesVisible) } {
1435	SendCmd "heightmap isolines 1"
1436	set _settings(isolinesVisible) 1
1437	}
1438	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1439	}
1440	DrawLegend $_curFldName
1441	}
1442	"colormap" {
1443	set color [$itk_component(colormap) value]
1444	set _settings(colormap) $color
1445	if { $color == "none" } {
1446	if { $_settings(colormapVisible) } {
1447	SendCmd "heightmap surface 0"
1448	set _settings(colormapVisible) 0
1449	}
1450	} else {
1451	if { !$_settings(colormapVisible) } {
1452	SendCmd "heightmap surface 1"
1453	set _settings(colormapVisible) 1
1454	}
1455	ResetColormap $color
1456	SendCmd "heightmap colormap $_currentColormap"
1457	}
1458	SendCmdNoWait "heightmap colormode scalar $_curFldName"
1459	SendCmdNoWait "dataset scalar $_curFldName"
1460	EventuallyRequestLegend
1461	}
1462	"heightmapOpacity" {
1463	set val $_settings(heightmapOpacity)
1464	set sval [expr { 0.01 * double($val) }]
1465	foreach dataset [CurrentDatasets -all] {
1466	SendCmd "heightmap opacity $sval $dataset"
1467	}
1468	}
1469	"heightmapScale" {
1470	if { $_settings(isHeightmap) } {
1471	set scale [GetHeightmapScale]
1472	foreach dataset [CurrentDatasets -all] {
1473	SendCmd "heightmap heightscale $scale $dataset"
1474	set _comp2scale($dataset) $scale
1475	}
1476	ResetAxes
1477	}
1478	}
1479	"lighting" {
1480	if { $_settings(isHeightmap) } {
1481	set bool $_settings(lighting)
1482	SendCmd "heightmap lighting $bool"
1483	} else {
1484	SendCmd "heightmap lighting 0"
1485	}
1486	}
1487	"field" {
1488	set label [$itk_component(field) value]
1489	set fname [$itk_component(field) translate $label]
1490	set _settings(field) $fname
1491	if { [info exists _fields($fname)] } {
1492	foreach { label units components } $_fields($fname) break
1493	if { $components > 1 } {
1494	set _colorMode vmag
1495	} else {
1496	set _colorMode scalar
1497	}
1498	set _curFldName $fname
1499	set _curFldLabel $label
1500	} else {
1501	puts stderr "unknown field \"$fname\""
1502	return
1503	}
1504	EventuallyRequestLegend
1505	}
1506	"stretchToFit" {
1507	set bool $_settings(stretchToFit)
1508	if { $bool } {
1509	set heightScale [GetHeightmapScale]
1510	if {$heightScale == 0} {
1511	SendCmd "camera aspect window"
1512	} else {
1513	SendCmd "camera aspect square"
1514	}
1515	} else {
1516	SendCmd "camera aspect native"
1517	}
1518	}
1519	"outline" {
1520	set bool $_settings(outline)
1521	SendCmd "dataset outline $bool"
1522	}
1523	"isHeightmap" {
1524	set bool $_settings(isHeightmap)
1525	if { $bool } {
1526	$itk_component(lighting) configure -state normal
1527	} else {
1528	$itk_component(lighting) configure -state disabled
1529	}
1530	set _settings(lighting) $bool
1531	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1532	if { $bool } {
1533	set _settings(heightmapScale) 50
1534	} else {
1535	set _settings(heightmapScale) 50
1536	}
1537	SendCmd "heightmap lighting $bool"
1538	set scale [GetHeightmapScale]
1539	foreach dataset [CurrentDatasets -all] {
1540	SendCmd "heightmap heightscale $scale $dataset"
1541	set _comp2scale($dataset) $scale
1542	}
1543	if {$_settings(stretchToFit)} {
1544	if {$scale == 0} {
1545	SendCmd "camera aspect window"
1546	} else {
1547	SendCmd "camera aspect square"
1548	}
1549	}
1550	ResetAxes
1551	# Fix the mouse bindings for rotation/panning and the
1552	# camera mode. Ideally we'd create a bindtag for these.
1553	set c $itk_component(view)
1554	if { $bool } {
1555	# Bindings for rotation via mouse
1556	bind $c <ButtonPress-1> \
1557	[itcl::code $this Rotate click %x %y]
1558	bind $c <B1-Motion> \
1559	[itcl::code $this Rotate drag %x %y]
1560	bind $c <ButtonRelease-1> \
1561	[itcl::code $this Rotate release %x %y]
1562	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1563	$_arcball quaternion $q
1564	if {$_view(ortho)} {
1565	SendCmd "camera mode ortho"
1566	} else {
1567	SendCmd "camera mode persp"
1568	}
1569	SendCmd "camera orient $q"
1570	} else {
1571	set _settings(heightmapScale) 0
1572	bind $c <ButtonPress-1> {}
1573	bind $c <B1-Motion> {}
1574	bind $c <ButtonRelease-1> {}
1575	SendCmd "camera mode image"
1576	}
1577	}
1578	"legendVisible" {
1579	if { !$_settings(legendVisible) } {
1580	$itk_component(view) delete legend
1581	}
1582	DrawLegend $_curFldName
1583	}
1584	default {
1585	error "don't know how to fix $what"
1586	}
1587	}
1588	}
1589
1590	#
1591	# RequestLegend --
1592	#
1593	# Request a new legend from the server. The size of the legend
1594	# is determined from the height of the canvas.
1595	#
1596	# This should be called when
1597	# 1. A new current colormap is set.
1598	# 2. Window is resized.
1599	# 3. The limits of the data have changed. (Just need a redraw).
1600	# 4. Number of isolines have changed. (Just need a redraw).
1601	# 5. Legend becomes visible (Just need a redraw).
1602	#
1603	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1604	set _legendPending 0
1605	set font "Arial 8"
1606	set lineht [font metrics $font -linespace]
1607	set c $itk_component(view)
1608	set w 12
1609	set h [expr {$_height - 2 * ($lineht + 2)}]
1610	if { $h < 1} {
1611	return
1612	}
1613	# Set the legend on the first heightmap dataset.
1614	if { $_currentColormap != "" } {
1615	set cmap $_currentColormap
1616	SendCmdNoWait "legend $cmap scalar $_curFldName {} $w $h 0"
1617	SendCmdNoWait "heightmap colormode scalar $_curFldName"
1618	SendCmdNoWait "dataset scalar $_curFldName"
1619	}
1620	}
1621
1622	#
1623	# ResetAxes --
1624	#
1625	# Set axis z bounds and range
1626	#
1627	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1628	if { ![info exists _limits(v)] \|\| ![info exists _fields($_curFldName)]} {
1629	SendCmd "dataset maprange all"
1630	SendCmd "axis autorange z on"
1631	SendCmd "axis autobounds z on"
1632	return
1633	}
1634	foreach { vmin vmax } $_limits(v) break
1635	foreach { xmin xmax } $_limits(x) break
1636	foreach { ymin ymax } $_limits(y) break
1637	set dataRange [expr $vmax - $vmin]
1638	set boundsRange [expr $xmax - $xmin]
1639	set r [expr $ymax - $ymin]
1640	if {$r > $boundsRange} {
1641	set boundsRange $r
1642	}
1643	if {$dataRange < 1.0e-10} {
1644	set dataScale 1.0
1645	} else {
1646	set dataScale [expr $boundsRange / $dataRange]
1647	}
1648	set heightScale [GetHeightmapScale]
1649	set bMin [expr $heightScale * $dataScale * $vmin]
1650	set bMax [expr $heightScale * $dataScale * $vmax]
1651	SendCmd "dataset maprange explicit $_limits(v) $_curFldName"
1652	SendCmd "axis bounds z $bMin $bMax"
1653	SendCmd "axis range z $_limits(v)"
1654	}
1655
1656	#
1657	# SetCurrentColormap --
1658	#
1659	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { stylelist } {
1660	array set style {
1661	-color BCGYR
1662	-levels 10
1663	-opacity 1.0
1664	}
1665	array set style $stylelist
1666
1667	set name "$style(-color):$style(-levels):$style(-opacity)"
1668	if { ![info exists _colormaps($name)] } {
1669	set stylelist [array get style]
1670	BuildColormap $name $stylelist
1671	set _colormaps($name) $stylelist
1672	}
1673	set _currentColormap $name
1674	}
1675
1676
1677	#
1678	# BuildColormap --
1679	#
1680	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name stylelist } {
1681	array set style $stylelist
1682	set cmap [ColorsToColormap $style(-color)]
1683	if { [llength $cmap] == 0 } {
1684	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1685	}
1686	if { ![info exists _settings(heightmapOpacity)] } {
1687	set _settings(heightmapOpacity) $style(-opacity)
1688	}
1689	set max $_settings(heightmapOpacity)
1690
1691	set wmap "0.0 1.0 1.0 1.0"
1692	SendCmd "colormap add $name { $cmap } { $wmap }"
1693	}
1694
1695	# ----------------------------------------------------------------------
1696	# CONFIGURATION OPTION: -mode
1697	# ----------------------------------------------------------------------
1698	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1699	switch -- $itk_option(-mode) {
1700	"heightmap" {
1701	set _settings(isHeightmap) 1
1702	}
1703	"contour" {
1704	set _settings(isHeightmap) 0
1705	}
1706	default {
1707	error "unknown mode settings \"$itk_option(-mode)\""
1708	}
1709	}
1710	AdjustSetting isHeightmap
1711	}
1712
1713	# ----------------------------------------------------------------------
1714	# CONFIGURATION OPTION: -plotbackground
1715	# ----------------------------------------------------------------------
1716	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1717	if { [isconnected] } {
1718	set rgb [Color2RGB $itk_option(-plotbackground)]
1719	SendCmd "screen bgcolor $rgb"
1720	$itk_component(view) configure -background $itk_option(-plotbackground)
1721	}
1722	}
1723
1724	# ----------------------------------------------------------------------
1725	# CONFIGURATION OPTION: -plotforeground
1726	# ----------------------------------------------------------------------
1727	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1728	if { [isconnected] } {
1729	set rgb [Color2RGB $itk_option(-plotforeground)]
1730	SendCmd "dataset color $rgb"
1731	SendCmd "axis color all $rgb"
1732	}
1733	}
1734
1735	itcl::body Rappture::VtkHeightmapViewer::limits { dataobj } {
1736	lappend limits x [$dataobj limits x]
1737	lappend limits y [$dataobj limits y]
1738	lappend limits v [$dataobj limits v]
1739	return $limits
1740	}
1741
1742	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1743
1744	set fg [option get $itk_component(hull) font Font]
1745	#set bfg [option get $itk_component(hull) boldFont Font]
1746
1747	set inner [$itk_component(main) insert end \
1748	-title "Contour Settings" \
1749	-icon [Rappture::icon volume-on]]
1750	$inner configure -borderwidth 4
1751
1752	checkbutton $inner.legend \
1753	-text "Legend" \
1754	-variable [itcl::scope _settings(legendVisible)] \
1755	-command [itcl::code $this AdjustSetting legendVisible] \
1756	-font "Arial 9"
1757
1758	checkbutton $inner.wireframe \
1759	-text "Wireframe" \
1760	-variable [itcl::scope _settings(wireframe)] \
1761	-command [itcl::code $this AdjustSetting wireframe] \
1762	-font "Arial 9"
1763
1764	itk_component add lighting {
1765	checkbutton $inner.lighting \
1766	-text "Enable Lighting" \
1767	-variable [itcl::scope _settings(lighting)] \
1768	-command [itcl::code $this AdjustSetting lighting] \
1769	-font "Arial 9"
1770	} {
1771	ignore -font
1772	}
1773
1774	checkbutton $inner.edges \
1775	-text "Edges" \
1776	-variable [itcl::scope _settings(edges)] \
1777	-command [itcl::code $this AdjustSetting edges] \
1778	-font "Arial 9"
1779
1780	checkbutton $inner.outline \
1781	-text "Outline" \
1782	-variable [itcl::scope _settings(outline)] \
1783	-command [itcl::code $this AdjustSetting outline] \
1784	-font "Arial 9"
1785
1786	checkbutton $inner.stretch \
1787	-text "Stretch to fit" \
1788	-variable [itcl::scope _settings(stretchToFit)] \
1789	-command [itcl::code $this AdjustSetting stretchToFit] \
1790	-font "Arial 9"
1791
1792	label $inner.field_l -text "Field" -font "Arial 9"
1793	itk_component add field {
1794	Rappture::Combobox $inner.field -width 10 -editable no
1795	}
1796	bind $inner.field <<Value>> \
1797	[itcl::code $this AdjustSetting field]
1798
1799	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1800	itk_component add colormap {
1801	Rappture::Combobox $inner.colormap -width 10 -editable no
1802	}
1803	$inner.colormap choices insert end \
1804	"BCGYR" "BCGYR" \
1805	"BGYOR" "BGYOR" \
1806	"blue" "blue" \
1807	"blue-to-brown" "blue-to-brown" \
1808	"blue-to-orange" "blue-to-orange" \
1809	"blue-to-grey" "blue-to-grey" \
1810	"green-to-magenta" "green-to-magenta" \
1811	"greyscale" "greyscale" \
1812	"nanohub" "nanohub" \
1813	"rainbow" "rainbow" \
1814	"spectral" "spectral" \
1815	"ROYGB" "ROYGB" \
1816	"RYGCB" "RYGCB" \
1817	"brown-to-blue" "brown-to-blue" \
1818	"grey-to-blue" "grey-to-blue" \
1819	"orange-to-blue" "orange-to-blue" \
1820	"none" "none"
1821
1822	$itk_component(colormap) value "BCGYR"
1823	bind $inner.colormap <<Value>> \
1824	[itcl::code $this AdjustSetting colormap]
1825
1826	label $inner.isolinecolor_l -text "Isolines" -font "Arial 9"
1827	itk_component add isolinecolor {
1828	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1829	}
1830	$inner.isolinecolor choices insert end \
1831	"black" "black" \
1832	"blue" "blue" \
1833	"cyan" "cyan" \
1834	"green" "green" \
1835	"grey" "grey" \
1836	"magenta" "magenta" \
1837	"orange" "orange" \
1838	"red" "red" \
1839	"white" "white" \
1840	"none" "none"
1841
1842	$itk_component(isolinecolor) value "black"
1843	bind $inner.isolinecolor <<Value>> \
1844	[itcl::code $this AdjustSetting isolineColor]
1845
1846	label $inner.background_l -text "Background" -font "Arial 9"
1847	itk_component add background {
1848	Rappture::Combobox $inner.background -width 10 -editable no
1849	}
1850	$inner.background choices insert end \
1851	"black" "black" \
1852	"white" "white" \
1853	"grey" "grey"
1854
1855	$itk_component(background) value "white"
1856	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1857
1858	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1859	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1860	-variable [itcl::scope _settings(heightmapOpacity)] \
1861	-width 10 \
1862	-showvalue off \
1863	-command [itcl::code $this AdjustSetting heightmapOpacity]
1864
1865	label $inner.scale_l -text "Scale" -font "Arial 9"
1866	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1867	-variable [itcl::scope _settings(heightmapScale)] \
1868	-width 10 \
1869	-showvalue off \
1870	-command [itcl::code $this AdjustSetting heightmapScale]
1871
1872	blt::table $inner \
1873	0,0 $inner.colormap_l -anchor w -pady 2 \
1874	0,1 $inner.colormap -anchor w -pady 2 -fill x \
1875	1,0 $inner.isolinecolor_l -anchor w -pady 2 \
1876	1,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
1877	2,0 $inner.background_l -anchor w -pady 2 \
1878	2,1 $inner.background -anchor w -pady 2 -fill x \
1879	4,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1880	5,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
1881	6,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1882	7,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1883	8,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1884	9,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
1885	10,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1886	11,0 $inner.opacity_l -anchor w -pady 2 \
1887	11,1 $inner.opacity -fill x -pady 2 \
1888	12,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
1889	12,1 $inner.scale -fill x -pady 2 -cspan 2 \
1890
1891	if { [array size _fields] > 1 } {
1892	blt::table $inner \
1893	3,0 $inner.field_l -anchor w -pady 2 \
1894	3,1 $inner.field -anchor w -pady 2 -fill x
1895	}
1896	blt::table configure $inner r* c* -resize none
1897	blt::table configure $inner r13 c1 -resize expand
1898	}
1899
1900	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
1901
1902	set fg [option get $itk_component(hull) font Font]
1903	#set bfg [option get $itk_component(hull) boldFont Font]
1904
1905	set inner [$itk_component(main) insert end \
1906	-title "Axis Settings" \
1907	-icon [Rappture::icon axis1]]
1908	$inner configure -borderwidth 4
1909
1910	checkbutton $inner.visible \
1911	-text "Axes" \
1912	-variable [itcl::scope _settings(axisVisible)] \
1913	-command [itcl::code $this AdjustSetting axisVisible] \
1914	-font "Arial 9"
1915	checkbutton $inner.labels \
1916	-text "Axis Labels" \
1917	-variable [itcl::scope _settings(axisLabels)] \
1918	-command [itcl::code $this AdjustSetting axisLabels] \
1919	-font "Arial 9"
1920	label $inner.grid_l -text "Grid" -font "Arial 9"
1921	checkbutton $inner.xgrid \
1922	-text "X" \
1923	-variable [itcl::scope _settings(axisXGrid)] \
1924	-command [itcl::code $this AdjustSetting axisXGrid] \
1925	-font "Arial 9"
1926	checkbutton $inner.ygrid \
1927	-text "Y" \
1928	-variable [itcl::scope _settings(axisYGrid)] \
1929	-command [itcl::code $this AdjustSetting axisYGrid] \
1930	-font "Arial 9"
1931	checkbutton $inner.zgrid \
1932	-text "Z" \
1933	-variable [itcl::scope _settings(axisZGrid)] \
1934	-command [itcl::code $this AdjustSetting axisZGrid] \
1935	-font "Arial 9"
1936	checkbutton $inner.minorticks \
1937	-text "Minor Ticks" \
1938	-variable [itcl::scope _settings(axisMinorTicks)] \
1939	-command [itcl::code $this AdjustSetting axisMinorTicks] \
1940	-font "Arial 9"
1941
1942
1943	label $inner.mode_l -text "Mode" -font "Arial 9"
1944
1945	itk_component add axisflymode {
1946	Rappture::Combobox $inner.mode -width 10 -editable no
1947	}
1948	$inner.mode choices insert end \
1949	"static_triad" "static" \
1950	"closest_triad" "closest" \
1951	"furthest_triad" "furthest" \
1952	"outer_edges" "outer"
1953	$itk_component(axisflymode) value "static"
1954	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlymode]
1955
1956	blt::table $inner \
1957	0,0 $inner.visible -anchor w -cspan 4 \
1958	1,0 $inner.labels -anchor w -cspan 4 \
1959	2,0 $inner.minorticks -anchor w -cspan 4 \
1960	4,0 $inner.grid_l -anchor w \
1961	4,1 $inner.xgrid -anchor w \
1962	4,2 $inner.ygrid -anchor w \
1963	4,3 $inner.zgrid -anchor w \
1964	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1965	5,1 $inner.mode -fill x -cspan 3
1966
1967	blt::table configure $inner r* c* -resize none
1968	blt::table configure $inner r7 c6 -resize expand
1969	blt::table configure $inner r3 -height 0.125i
1970	}
1971
1972
1973	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
1974	set inner [$itk_component(main) insert end \
1975	-title "Camera Settings" \
1976	-icon [Rappture::icon camera]]
1977	$inner configure -borderwidth 4
1978
1979	set labels { qx qy qz qw xpan ypan zoom }
1980	set row 0
1981	foreach tag $labels {
1982	label $inner.${tag}label -text $tag -font "Arial 9"
1983	entry $inner.${tag} -font "Arial 9" -bg white \
1984	-textvariable [itcl::scope _view($tag)]
1985	bind $inner.${tag} <KeyPress-Return> \
1986	[itcl::code $this camera set ${tag}]
1987	blt::table $inner \
1988	$row,0 $inner.${tag}label -anchor e -pady 2 \
1989	$row,1 $inner.${tag} -anchor w -pady 2
1990	blt::table configure $inner r$row -resize none
1991	incr row
1992	}
1993	checkbutton $inner.ortho \
1994	-text "Orthographic Projection" \
1995	-variable [itcl::scope _view(ortho)] \
1996	-command [itcl::code $this camera set ortho] \
1997	-font "Arial 9"
1998	blt::table $inner \
1999	$row,0 $inner.ortho -columnspan 2 -anchor w -pady 2
2000	blt::table configure $inner r$row -resize none
2001	incr row
2002
2003	blt::table configure $inner c0 c1 -resize none
2004	blt::table configure $inner c2 -resize expand
2005	blt::table configure $inner r$row -resize expand
2006	}
2007
2008	#
2009	# camera --
2010	#
2011	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2012	switch -- $option {
2013	"show" {
2014	puts [array get _view]
2015	}
2016	"set" {
2017	set who [lindex $args 0]
2018	set x $_view($who)
2019	set code [catch { string is double $x } result]
2020	if { $code != 0 \|\| !$result } {
2021	return
2022	}
2023	switch -- $who {
2024	"ortho" {
2025	if {$_view(ortho)} {
2026	SendCmd "camera mode ortho"
2027	} else {
2028	SendCmd "camera mode persp"
2029	}
2030	}
2031	"xpan" - "ypan" {
2032	PanCamera
2033	}
2034	"qx" - "qy" - "qz" - "qw" {
2035	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2036	$_arcball quaternion $q
2037	EventuallyRotate $q
2038	}
2039	"zoom" {
2040	SendCmd "camera zoom $_view(zoom)"
2041	}
2042	}
2043	}
2044	}
2045	}
2046
2047	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2048	set bytes ""
2049	foreach dataobj [get] {
2050	foreach comp [$dataobj components] {
2051	set tag $dataobj-$comp
2052	set contents [ConvertToVtkData $dataobj $comp]
2053	#set contents [$dataobj vtkdata $comp]
2054	append bytes "$contents\n\n"
2055	}
2056	}
2057	return [list .vtk $bytes]
2058	}
2059
2060	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2061	if { [image width $_image(download)] > 0 &&
2062	[image height $_image(download)] > 0 } {
2063	set bytes [$_image(download) data -format "jpeg -quality 100"]
2064	set bytes [Rappture::encoding::decode -as b64 $bytes]
2065	return [list .jpg $bytes]
2066	}
2067	return ""
2068	}
2069
2070	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2071	Rappture::Balloon $popup \
2072	-title "[Rappture::filexfer::label downloadWord] as..."
2073	set inner [$popup component inner]
2074	label $inner.summary -text "" -anchor w
2075	radiobutton $inner.vtk_button -text "VTK data file" \
2076	-variable [itcl::scope _downloadPopup(format)] \
2077	-font "Arial 9 " \
2078	-value vtk
2079	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2080	radiobutton $inner.image_button -text "Image File" \
2081	-variable [itcl::scope _downloadPopup(format)] \
2082	-font "Arial 9 " \
2083	-value image
2084	Rappture::Tooltip::for $inner.image_button \
2085	"Save as digital image."
2086
2087	button $inner.ok -text "Save" \
2088	-highlightthickness 0 -pady 2 -padx 3 \
2089	-command $command \
2090	-compound left \
2091	-image [Rappture::icon download]
2092
2093	button $inner.cancel -text "Cancel" \
2094	-highlightthickness 0 -pady 2 -padx 3 \
2095	-command [list $popup deactivate] \
2096	-compound left \
2097	-image [Rappture::icon cancel]
2098
2099	blt::table $inner \
2100	0,0 $inner.summary -cspan 2 \
2101	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2102	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2103	4,1 $inner.cancel -width .9i -fill y \
2104	4,0 $inner.ok -padx 2 -width .9i -fill y
2105	blt::table configure $inner r3 -height 4
2106	blt::table configure $inner r4 -pady 4
2107	raise $inner.image_button
2108	$inner.vtk_button invoke
2109	return $inner
2110	}
2111
2112	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2113	# Parse style string.
2114	set tag $dataobj-$comp
2115	array set style {
2116	-color BCGYR
2117	-edges 0
2118	-edgecolor black
2119	-lighting 1
2120	-linewidth 1.0
2121	-levels 10
2122	-visible 1
2123	}
2124	if { $_currentColormap == "" } {
2125	set stylelist [$dataobj style $comp]
2126	if { $stylelist != "" } {
2127	array set style $stylelist
2128	set stylelist [array get style]
2129	SetCurrentColormap $stylelist
2130	}
2131	$itk_component(colormap) value $style(-color)
2132	}
2133	set _numContours $style(-levels)
2134	set scale [GetHeightmapScale]
2135	SendCmd "heightmap add numcontours $_numContours $scale $tag"
2136	set _comp2scale($tag) $_settings(heightmapScale)
2137	SendCmd "heightmap edges $_settings(edges) $tag"
2138	SendCmd "heightmap wireframe $_settings(wireframe) $tag"
2139	SendCmd "heightmap colormap $_currentColormap $tag"
2140	}
2141
2142	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2143	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2144	return 0
2145	}
2146	return 1
2147	}
2148
2149	# ----------------------------------------------------------------------
2150	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2151	#
2152	# Invoked automatically whenever the "legend" command comes in from
2153	# the rendering server. Indicates that binary image data with the
2154	# specified <size> will follow.
2155	# ----------------------------------------------------------------------
2156	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2157	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2158	set _title $title
2159	regsub {\(mag\)} $title "" _title
2160	if { [isconnected] } {
2161	set bytes [ReceiveBytes $size]
2162	if { ![info exists _image(legend)] } {
2163	set _image(legend) [image create photo]
2164	}
2165	$_image(legend) configure -data $bytes
2166	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2167	if { [catch {DrawLegend $_title} errs] != 0 } {
2168	global errorInfo
2169	puts stderr "errs=$errs errorInfo=$errorInfo"
2170	}
2171	}
2172	}
2173
2174	#
2175	# DrawLegend --
2176	#
2177	# Draws the legend in it's own canvas which resides to the right
2178	# of the contour plot area.
2179	#
2180	itcl::body Rappture::VtkHeightmapViewer::DrawLegend { name } {
2181	set c $itk_component(view)
2182	set w [winfo width $c]
2183	set h [winfo height $c]
2184	set font "Arial 8"
2185	set lineht [font metrics $font -linespace]
2186
2187	if { $name == "component" } {
2188	set title ""
2189	} else {
2190	if { [info exists _fields($name)] } {
2191	foreach { title units } $_fields($name) break
2192	if { $units != "" } {
2193	set title [format "%s (%s)" $title $units]
2194	}
2195	} else {
2196	set title $name
2197	}
2198	}
2199	set x [expr $w - 2]
2200	if { !$_settings(legendVisible) } {
2201	$c delete legend
2202	return
2203	}
2204	if { [$c find withtag "legend"] == "" } {
2205	set y 2
2206	# If there's a legend title, create a text item for the title.
2207	if { $title != "" } {
2208	$c create text $x $y \
2209	-anchor ne \
2210	-fill $itk_option(-plotforeground) -tags "title legend" \
2211	-font $font
2212	incr y $lineht
2213	}
2214	$c create text $x $y \
2215	-anchor ne \
2216	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2217	-font $font
2218	incr y $lineht
2219	$c create image $x $y \
2220	-anchor ne \
2221	-image $_image(legend) -tags "colormap legend"
2222	$c create text $x [expr {$h-2}] \
2223	-anchor se \
2224	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2225	-font $font
2226	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2227	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2228	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2229	}
2230	$c delete isoline
2231	set x2 $x
2232	set iw [image width $_image(legend)]
2233	set ih [image height $_image(legend)]
2234	set x1 [expr $x2 - ($iw*12)/10]
2235	set color [$itk_component(isolinecolor) value]
2236	# Draw the isolines on the legend.
2237	if { $color != "none" && $_numContours > 0 } {
2238	set pixels [blt::vector create \#auto]
2239	set values [blt::vector create \#auto]
2240	set range [image height $_image(legend)]
2241	# Order of pixels is max to min (max is at top of legend).
2242	$pixels seq $ih 0 $_numContours
2243	set offset [expr 2 + $lineht]
2244	# If there's a legend title, increase the offset by the line height.
2245	if { $title != "" } {
2246	incr offset $lineht
2247	}
2248	$pixels expr {round($pixels + $offset)}
2249	# Order of values is min to max.
2250	foreach { vmin vmax } $_limits(v) break
2251	$values seq $vmin $vmax $_numContours
2252	set tags "isoline legend"
2253	foreach pos [$pixels range 0 end] value [$values range end 0] {
2254	set y1 [expr int($pos)]
2255	set id [$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags]
2256	$c bind $id <Enter> [itcl::code $this EnterIsoline %x %y $value]
2257	$c bind $id <Leave> [itcl::code $this LeaveIsoline]
2258	}
2259	blt::vector destroy $pixels $values
2260	}
2261
2262	$c bind title <ButtonPress> [itcl::code $this Combo post]
2263	$c bind title <Enter> [itcl::code $this Combo activate]
2264	$c bind title <Leave> [itcl::code $this Combo deactivate]
2265	# Reset the item coordinates according the current size of the plot.
2266	$c itemconfigure title -text $title
2267	if { [info exists _limits(v)] } {
2268	foreach { vmin vmax } $_limits(v) break
2269	$c itemconfigure vmin -text [format %g $vmin]
2270	$c itemconfigure vmax -text [format %g $vmax]
2271	}
2272	set y 2
2273	# If there's a legend title, move the title to the correct position
2274	if { $title != "" } {
2275	$c coords title $x $y
2276	incr y $lineht
2277	}
2278	$c coords vmax $x $y
2279	incr y $lineht
2280	$c coords colormap $x $y
2281	$c coords vmin $x [expr {$h - 2}]
2282	}
2283
2284	#
2285	# EnterIsoline --
2286	#
2287	itcl::body Rappture::VtkHeightmapViewer::EnterIsoline { x y value } {
2288	SetIsolineTip $x $y $value
2289	}
2290
2291	#
2292	# LeaveIsoline --
2293	#
2294	itcl::body Rappture::VtkHeightmapViewer::LeaveIsoline { } {
2295	Rappture::Tooltip::tooltip cancel
2296	.rappturetooltip configure -icon ""
2297	}
2298
2299	#
2300	# SetIsolineTip --
2301	#
2302	itcl::body Rappture::VtkHeightmapViewer::SetIsolineTip { x y value } {
2303	set c $itk_component(view)
2304	set w [winfo width $c]
2305	set h [winfo height $c]
2306	set font "Arial 8"
2307	set lineht [font metrics $font -linespace]
2308
2309	if { [info exists _fields($_title)] } {
2310	foreach { title units } $_fields($_title) break
2311	if { $units != "" } {
2312	set title [format "%s (%s)" $title $units]
2313	}
2314	} else {
2315	set title $_title
2316	}
2317	set imgHeight [image height $_image(legend)]
2318	set coords [$c coords colormap]
2319	set imgX [expr $w - [image width $_image(legend)] - 2]
2320	set imgY [expr $y - 2 * ($lineht + 2)]
2321
2322	.rappturetooltip configure -icon ""
2323
2324	# Compute the value of the point
2325	set tipx [expr $x + 15]
2326	set tipy [expr $y - 5]
2327	Rappture::Tooltip::text $c "Isoline $value"
2328	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2329	}
2330
2331
2332	#
2333	# EnterLegend --
2334	#
2335	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2336	SetLegendTip $x $y
2337	}
2338
2339	#
2340	# MotionLegend --
2341	#
2342	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2343	Rappture::Tooltip::tooltip cancel
2344	set c $itk_component(view)
2345	SetLegendTip $x $y
2346	}
2347
2348	#
2349	# LeaveLegend --
2350	#
2351	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2352	Rappture::Tooltip::tooltip cancel
2353	.rappturetooltip configure -icon ""
2354	}
2355
2356	#
2357	# SetLegendTip --
2358	#
2359	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2360	set c $itk_component(view)
2361	set w [winfo width $c]
2362	set h [winfo height $c]
2363	set font "Arial 8"
2364	set lineht [font metrics $font -linespace]
2365
2366	set imgHeight [image height $_image(legend)]
2367	set coords [$c coords colormap]
2368	set imgX [expr $w - [image width $_image(legend)] - 2]
2369	set imgY [expr $y - 2 * ($lineht + 2)]
2370
2371	if { [info exists _fields($_title)] } {
2372	foreach { title units } $_fields($_title) break
2373	if { $units != "" } {
2374	set title [format "%s (%s)" $title $units]
2375	}
2376	} else {
2377	set title $_title
2378	}
2379	# Make a swatch of the selected color
2380	if { [catch { $_image(legend) get 10 $imgY } pixel] != 0 } {
2381	#puts stderr "out of range: $imgY"
2382	return
2383	}
2384	if { ![info exists _image(swatch)] } {
2385	set _image(swatch) [image create photo -width 24 -height 24]
2386	}
2387	set color [eval format "\#%02x%02x%02x" $pixel]
2388	$_image(swatch) put black -to 0 0 23 23
2389	$_image(swatch) put $color -to 1 1 22 22
2390	.rappturetooltip configure -icon $_image(swatch)
2391
2392	# Compute the value of the point
2393	if { [info exists _limits(v)] } {
2394	foreach { vmin vmax } $_limits(v) break
2395	set t [expr 1.0 - (double($imgY) / double($imgHeight-1))]
2396	set value [expr $t * ($vmax - $vmin) + $vmin]
2397	} else {
2398	set value 0.0
2399	}
2400	set tipx [expr $x + 15]
2401	set tipy [expr $y - 5]
2402	Rappture::Tooltip::text $c "$title $value"
2403	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2404	}
2405
2406	# ----------------------------------------------------------------------
2407	# USAGE: _dropdown post
2408	# USAGE: _dropdown unpost
2409	# USAGE: _dropdown select
2410	#
2411	# Used internally to handle the dropdown list for this combobox. The
2412	# post/unpost options are invoked when the list is posted or unposted
2413	# to manage the relief of the controlling button. The select option
2414	# is invoked whenever there is a selection from the list, to assign
2415	# the value back to the gauge.
2416	# ----------------------------------------------------------------------
2417	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2418	set c $itk_component(view)
2419	switch -- $option {
2420	post {
2421	foreach { x1 y1 x2 y2 } [$c bbox title] break
2422	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2423	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2424	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2425	tk_popup $itk_component(fieldmenu) $x $y
2426	}
2427	activate {
2428	$c itemconfigure title -fill red
2429	}
2430	deactivate {
2431	$c itemconfigure title -fill $itk_option(-plotforeground)
2432	}
2433	invoke {
2434	$itk_component(field) value $_curFldLabel
2435	AdjustSetting field
2436	}
2437	default {
2438	error "bad option \"$option\": should be post, unpost, select"
2439	}
2440	}
2441	}
2442
2443	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2444	if { $_settings(isHeightmap) } {
2445	set val $_settings(heightmapScale)
2446	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2447	return $sval
2448	}
2449	set sval 0
2450	}
2451
2452	itcl::body Rappture::VtkHeightmapViewer::ResetColormap { color } {
2453	array set style {
2454	-color BCGYR
2455	-levels 10
2456	-opacity 1.0
2457	}
2458	if { [info exists _colormap($_currentColormap)] } {
2459	array set style $_colormap($_currentColormap)
2460	}
2461	set style(-color) $color
2462	SetCurrentColormap [array get style]
2463	}
2464

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