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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 3418

Last change on this file since 3418 was 3418, checked in by ldelgass, 11 years ago
Need to set camera mode _before_ resetting camera to properly initialize image camera mode in heightmap viewer.
File size: 79.7 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 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 DoRotate {}
72	protected method AdjustSetting {what {value ""}}
73	protected method AdjustMode {}
74	protected method InitSettings { args }
75	protected method Pan {option x y}
76	protected method Pick {x y}
77	protected method Rebuild {}
78	protected method ReceiveDataset { args }
79	protected method ReceiveImage { args }
80	protected method ReceiveLegend { colormap title min max size }
81	protected method Rotate {option x y}
82	protected method SendCmd {string}
83	protected method SendCmdNoWait {string}
84	protected method Zoom {option}
85
86	# The following methods are only used by this class.
87	private method BuildAxisTab {}
88	private method BuildCameraTab {}
89	private method BuildColormap { name colors }
90	private method ResetColormap { color }
91	private method BuildContourTab {}
92	private method BuildDownloadPopup { widget command }
93	private method Combo { option }
94	private method ConvertToVtkData { dataobj comp }
95	private method DrawLegend { title }
96	private method EnterLegend { x y }
97	private method EventuallyRequestLegend {}
98	private method EventuallyResize { w h }
99	private method EventuallyRotate { q }
100	private method GetImage { args }
101	private method GetVtkData { args }
102	private method IsValidObject { dataobj }
103	private method LeaveLegend {}
104	private method MotionLegend { x y }
105	private method PanCamera {}
106	private method RequestLegend {}
107	private method SetCurrentColormap { stylelist }
108	private method SetLegendTip { x y }
109	private method SetObjectStyle { dataobj comp }
110	private method GetHeightmapScale {}
111	private method EnterIsoline { x y value }
112	private method LeaveIsoline {}
113	private method SetIsolineTip { x y value }
114	private method ResetAxes {}
115
116	private variable _arcball ""
117	private variable _outbuf ; # buffer for outgoing commands
118
119	private variable _dlist "" ; # list of data objects
120	private variable _obj2datasets
121	private variable _obj2ovride ; # maps dataobj => style override
122	private variable _comp2scale; # maps dataset to the heightmap scale.
123	private variable _datasets ; # contains all the dataobj-component
124	; # datasets in the server
125	private variable _colormaps ; # contains all the colormaps
126	; # in the server.
127
128	# The name of the current colormap used. The colormap is global to all
129	# heightmaps displayed.
130	private variable _currentColormap "" ;
131
132	private variable _click ; # info used for rotate operations
133	private variable _limits ; # Overall limits for all dataobjs
134	# using the viewer.
135	private variable _view ; # view params for 3D view
136	private variable _settings
137	private variable _initialStyle ""; # First found style in dataobjects.
138	private variable _reset 1; # Indicates if camera needs to be reset
139	# to starting position.
140	private variable _beforeConnect 1; # Indicates if camera needs to be reset
141	# to starting position.
142
143	private variable _first "" ; # This is the topmost dataset.
144	private variable _start 0
145	private variable _buffering 0
146	private variable _title ""
147
148	common _downloadPopup; # download options from popup
149	private common _hardcopy
150	private variable _width 0
151	private variable _height 0
152	private variable _resizePending 0
153	private variable _numIsolinesPending 0
154	private variable _rotatePending 0
155	private variable _legendPending 0
156	private variable _fieldNames {}
157	private variable _fields
158	private variable _curFldName ""
159	private variable _curFldLabel ""
160	private variable _colorMode "vmag";# Mode of colormap (vmag or scalar)
161	}
162
163	itk::usual VtkHeightmapViewer {
164	keep -background -foreground -cursor -font
165	keep -plotbackground -plotforeground -mode
166	}
167
168	# ----------------------------------------------------------------------
169	# CONSTRUCTOR
170	# ----------------------------------------------------------------------
171	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
172	set _serverType "vtkvis"
173
174	# Rebuild event
175	$_dispatcher register !rebuild
176	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
177
178	# Resize event
179	$_dispatcher register !resize
180	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
181
182	# Rotate event
183	$_dispatcher register !rotate
184	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
185
186	# Legend event
187	$_dispatcher register !legend
188	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
189
190	#
191	# Populate parser with commands handle incoming requests
192	#
193	$_parser alias image [itcl::code $this ReceiveImage]
194	$_parser alias dataset [itcl::code $this ReceiveDataset]
195	$_parser alias legend [itcl::code $this ReceiveLegend]
196	$_parser alias viserror [itcl::code $this ReceiveError]
197
198	# Initialize the view to some default parameters.
199	array set _view {
200	qw 0.36
201	qx 0.25
202	qy 0.50
203	qz 0.70
204	zoom 1.0
205	xpan 0
206	ypan 0
207	ortho 1
208	}
209	set _arcball [blt::arcball create 100 100]
210	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
211	$_arcball quaternion $q
212
213	array set _settings [subst {
214	axisFlymode "static"
215	axisMinorTicks 1
216	stretchToFit 0
217	axisLabels 1
218	axisVisible 1
219	axisXGrid 0
220	axisYGrid 0
221	axisZGrid 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	saveLighting 1
232	numIsolines 10
233	opacity 100
234	outline 0
235	wireframe 0
236	saveOpacity 100
237	}]
238
239	itk_component add view {
240	canvas $itk_component(plotarea).view \
241	-highlightthickness 0 -borderwidth 0
242	} {
243	usual
244	ignore -highlightthickness -borderwidth -background
245	}
246
247	itk_component add fieldmenu {
248	menu $itk_component(plotarea).menu \
249	-relief flat \
250	-tearoff no
251	} {
252	usual
253	ignore -background -foreground -relief -tearoff
254	}
255	set c $itk_component(view)
256	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
257	bind $c <4> [itcl::code $this Zoom in 0.25]
258	bind $c <5> [itcl::code $this Zoom out 0.25]
259	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
260	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
261	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
262	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
263	bind $c <Enter> "focus %W"
264	bind $c <Control-F1> [itcl::code $this ToggleConsole]
265
266	# Fix the scrollregion in case we go off screen
267	$c configure -scrollregion [$c bbox all]
268
269	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
270	set _map(cwidth) -1
271	set _map(cheight) -1
272	set _map(zoom) 1.0
273	set _map(original) ""
274
275	set f [$itk_component(main) component controls]
276	itk_component add reset {
277	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
278	-highlightthickness 0 \
279	-image [Rappture::icon reset-view] \
280	-command [itcl::code $this Zoom reset]
281	} {
282	usual
283	ignore -highlightthickness
284	}
285	pack $itk_component(reset) -side top -padx 2 -pady 2
286	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
287
288	itk_component add zoomin {
289	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
290	-highlightthickness 0 \
291	-image [Rappture::icon zoom-in] \
292	-command [itcl::code $this Zoom in]
293	} {
294	usual
295	ignore -highlightthickness
296	}
297	pack $itk_component(zoomin) -side top -padx 2 -pady 2
298	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
299
300	itk_component add zoomout {
301	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
302	-highlightthickness 0 \
303	-image [Rappture::icon zoom-out] \
304	-command [itcl::code $this Zoom out]
305	} {
306	usual
307	ignore -highlightthickness
308	}
309	pack $itk_component(zoomout) -side top -padx 2 -pady 2
310	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
311
312	itk_component add mode {
313	Rappture::PushButton $f.mode \
314	-onimage [Rappture::icon surface] \
315	-offimage [Rappture::icon surface] \
316	-variable [itcl::scope _settings(isHeightmap)] \
317	-command [itcl::code $this AdjustSetting isHeightmap] \
318	}
319	Rappture::Tooltip::for $itk_component(mode) \
320	"Toggle the surface/contour on/off"
321	pack $itk_component(mode) -padx 2 -pady 2
322
323	if { [catch {
324	BuildContourTab
325	BuildAxisTab
326	BuildCameraTab
327	} errs] != 0 } {
328	global errorInfo
329	puts stderr "errs=$errs errorInfo=$errorInfo"
330	}
331	set _image(legend) [image create photo]
332
333	# Hack around the Tk panewindow. The problem is that the requested
334	# size of the 3d view isn't set until an image is retrieved from
335	# the server. So the panewindow uses the tiny size.
336	set w 10000
337	pack forget $itk_component(view)
338	blt::table $itk_component(plotarea) \
339	0,0 $itk_component(view) -fill both -reqwidth $w
340	blt::table configure $itk_component(plotarea) c1 -resize none
341
342	# Bindings for panning via mouse
343	bind $itk_component(view) <ButtonPress-2> \
344	[itcl::code $this Pan click %x %y]
345	bind $itk_component(view) <B2-Motion> \
346	[itcl::code $this Pan drag %x %y]
347	bind $itk_component(view) <ButtonRelease-2> \
348	[itcl::code $this Pan release %x %y]
349
350	bind $itk_component(view) <ButtonRelease-3> \
351	[itcl::code $this Pick %x %y]
352
353	# Bindings for panning via keyboard
354	bind $itk_component(view) <KeyPress-Left> \
355	[itcl::code $this Pan set -10 0]
356	bind $itk_component(view) <KeyPress-Right> \
357	[itcl::code $this Pan set 10 0]
358	bind $itk_component(view) <KeyPress-Up> \
359	[itcl::code $this Pan set 0 -10]
360	bind $itk_component(view) <KeyPress-Down> \
361	[itcl::code $this Pan set 0 10]
362	bind $itk_component(view) <Shift-KeyPress-Left> \
363	[itcl::code $this Pan set -2 0]
364	bind $itk_component(view) <Shift-KeyPress-Right> \
365	[itcl::code $this Pan set 2 0]
366	bind $itk_component(view) <Shift-KeyPress-Up> \
367	[itcl::code $this Pan set 0 -2]
368	bind $itk_component(view) <Shift-KeyPress-Down> \
369	[itcl::code $this Pan set 0 2]
370
371	# Bindings for zoom via keyboard
372	bind $itk_component(view) <KeyPress-Prior> \
373	[itcl::code $this Zoom out]
374	bind $itk_component(view) <KeyPress-Next> \
375	[itcl::code $this Zoom in]
376
377	bind $itk_component(view) <Enter> "focus $itk_component(view)"
378
379	if {[string equal "x11" [tk windowingsystem]]} {
380	# Bindings for zoom via mouse
381	bind $itk_component(view) <4> [itcl::code $this Zoom out]
382	bind $itk_component(view) <5> [itcl::code $this Zoom in]
383	}
384
385	set _image(download) [image create photo]
386
387	eval itk_initialize $args
388	Connect
389	set _beforeConnect 0
390	}
391
392	# ----------------------------------------------------------------------
393	# DESTRUCTOR
394	# ----------------------------------------------------------------------
395	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
396	Disconnect
397	image delete $_image(plot)
398	image delete $_image(download)
399	catch { blt::arcball destroy $_arcball }
400	}
401
402	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
403	if { $_width < 2 } {
404	set _width 500
405	}
406	if { $_height < 2 } {
407	set _height 500
408	}
409	set _start [clock clicks -milliseconds]
410	SendCmd "screen size [expr $_width - 20] $_height"
411	EventuallyRequestLegend
412	set _resizePending 0
413	}
414
415	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
416	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
417	SendCmd "camera orient $q"
418	set _rotatePending 0
419	}
420
421	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
422	if { !$_legendPending } {
423	set _legendPending 1
424	$_dispatcher event -idle !legend
425	}
426	}
427
428	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
429	set _width $w
430	set _height $h
431	$_arcball resize $w $h
432	if { !$_resizePending } {
433	set _resizePending 1
434	$_dispatcher event -after 400 !resize
435	}
436	}
437
438	set rotate_delay 100
439
440	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
441	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
442	if { !$_rotatePending } {
443	set _rotatePending 1
444	global rotate_delay
445	$_dispatcher event -after $rotate_delay !rotate
446	}
447	}
448
449	# ----------------------------------------------------------------------
450	# USAGE: add <dataobj> ?<settings>?
451	#
452	# Clients use this to add a data object to the plot. The optional
453	# <settings> are used to configure the plot. Allowed settings are
454	# -color, -brightness, -width, -linestyle, and -raise.
455	# ----------------------------------------------------------------------
456	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
457	array set params {
458	-color auto
459	-width 1
460	-linestyle solid
461	-brightness 0
462	-raise 0
463	-description ""
464	-param ""
465	-type ""
466	}
467	array set params $settings
468	set params(-description) ""
469	set params(-param) ""
470	foreach {opt val} $settings {
471	if {![info exists params($opt)]} {
472	error "bad setting \"$opt\": should be [join [lsort [array names params]] {, }]"
473	}
474	set params($opt) $val
475	}
476	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
477	# can't handle -autocolors yet
478	set params(-color) white
479	}
480	set pos [lsearch -exact $dataobj $_dlist]
481	if {$pos < 0} {
482	lappend _dlist $dataobj
483	}
484	set _obj2ovride($dataobj-color) $params(-color)
485	set _obj2ovride($dataobj-width) $params(-width)
486	set _obj2ovride($dataobj-raise) $params(-raise)
487	$_dispatcher event -idle !rebuild
488	}
489
490
491	# ----------------------------------------------------------------------
492	# USAGE: delete ?<dataobj1> <dataobj2> ...?
493	#
494	# Clients use this to delete a dataobj from the plot. If no dataobjs
495	# are specified, then all dataobjs are deleted. No data objects are
496	# deleted. They are only removed from the display list.
497	#
498	# ----------------------------------------------------------------------
499	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
500	if { [llength $args] == 0} {
501	set args $_dlist
502	}
503	# Delete all specified dataobjs
504	set changed 0
505	foreach dataobj $args {
506	set pos [lsearch -exact $_dlist $dataobj]
507	if { $pos < 0 } {
508	continue; # Don't know anything about it.
509	}
510	# Remove it from the dataobj list.
511	set _dlist [lreplace $_dlist $pos $pos]
512	array unset _obj2ovride $dataobj-*
513	array unset _settings $dataobj-*
514	# Append to the end of the dataobj list.
515	#lappend _dlist $dataobj
516	set changed 1
517	}
518	# If anything changed, then rebuild the plot
519	if { $changed } {
520	$_dispatcher event -idle !rebuild
521	}
522	}
523
524	# ----------------------------------------------------------------------
525	# USAGE: get ?-objects?
526	# USAGE: get ?-visible?
527	# USAGE: get ?-image view?
528	#
529	# Clients use this to query the list of objects being plotted, in
530	# order from bottom to top of this result. The optional "-image"
531	# flag can also request the internal images being shown.
532	# ----------------------------------------------------------------------
533	itcl::body Rappture::VtkHeightmapViewer::get {args} {
534	if {[llength $args] == 0} {
535	set args "-objects"
536	}
537
538	set op [lindex $args 0]
539	switch -- $op {
540	"-objects" {
541	# put the dataobj list in order according to -raise options
542	set dlist {}
543	foreach dataobj $_dlist {
544	if { ![IsValidObject $dataobj] } {
545	continue
546	}
547	if {[info exists _obj2ovride($dataobj-raise)] &&
548	$_obj2ovride($dataobj-raise)} {
549	set dlist [linsert $dlist 0 $dataobj]
550	} else {
551	lappend dlist $dataobj
552	}
553	}
554	return $dlist
555	}
556	"-visible" {
557	set dlist {}
558	foreach dataobj $_dlist {
559	if { ![IsValidObject $dataobj] } {
560	continue
561	}
562	if { ![info exists _obj2ovride($dataobj-raise)] } {
563	# No setting indicates that the object isn't visible.
564	continue
565	}
566	# Otherwise use the -raise parameter to put the object to
567	# the front of the list.
568	if { $_obj2ovride($dataobj-raise) } {
569	set dlist [linsert $dlist 0 $dataobj]
570	} else {
571	lappend dlist $dataobj
572	}
573	}
574	return $dlist
575	}
576	-image {
577	if {[llength $args] != 2} {
578	error "wrong # args: should be \"get -image view\""
579	}
580	switch -- [lindex $args end] {
581	view {
582	return $_image(plot)
583	}
584	default {
585	error "bad image name \"[lindex $args end]\": should be view"
586	}
587	}
588	}
589	default {
590	error "bad option \"$op\": should be -objects or -image"
591	}
592	}
593	}
594
595	# ----------------------------------------------------------------------
596	# USAGE: scale ?<data1> <data2> ...?
597	#
598	# Sets the default limits for the overall plot according to the
599	# limits of the data for all of the given <data> objects. This
600	# accounts for all objects--even those not showing on the screen.
601	# Because of this, the limits are appropriate for all objects as
602	# the user scans through data in the ResultSet viewer.
603	# ----------------------------------------------------------------------
604	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
605	foreach dataobj $args {
606	array set bounds [limits $dataobj]
607	foreach axis { x y v } {
608	foreach {min max} $bounds($axis) break
609	if { ![info exists _limits($axis)] } {
610	set _limits($axis) [list $min $max]
611	continue
612	}
613	foreach {amin amax} $_limits($axis) break
614	if { $amin > $min } {
615	set amin $min
616	}
617	if { $amax < $max } {
618	set amax $max
619	}
620	set _limits($axis) [list $amin $amax]
621	}
622	}
623	}
624
625	# ----------------------------------------------------------------------
626	# USAGE: download coming
627	# USAGE: download controls <downloadCommand>
628	# USAGE: download now
629	#
630	# Clients use this method to create a downloadable representation
631	# of the plot. Returns a list of the form {ext string}, where
632	# "ext" is the file extension (indicating the type of data) and
633	# "string" is the data itself.
634	# ----------------------------------------------------------------------
635	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
636	switch $option {
637	coming {
638	if {[catch {
639	blt::winop snap $itk_component(plotarea) $_image(download)
640	}]} {
641	$_image(download) configure -width 1 -height 1
642	$_image(download) put #000000
643	}
644	}
645	controls {
646	set popup .vtkviewerdownload
647	if { ![winfo exists .vtkviewerdownload] } {
648	set inner [BuildDownloadPopup $popup [lindex $args 0]]
649	} else {
650	set inner [$popup component inner]
651	}
652	set _downloadPopup(image_controls) $inner.image_frame
653	set num [llength [get]]
654	set num [expr {($num == 1) ? "1 result" : "$num results"}]
655	set word [Rappture::filexfer::label downloadWord]
656	$inner.summary configure -text "$word $num in the following format:"
657	update idletasks ;# Fix initial sizes
658	return $popup
659	}
660	now {
661	set popup .vtkviewerdownload
662	if {[winfo exists .vtkviewerdownload]} {
663	$popup deactivate
664	}
665	switch -- $_downloadPopup(format) {
666	"image" {
667	return [$this GetImage [lindex $args 0]]
668	}
669	"vtk" {
670	return [$this GetVtkData [lindex $args 0]]
671	}
672	}
673	return ""
674	}
675	default {
676	error "bad option \"$option\": should be coming, controls, now"
677	}
678	}
679	}
680
681	# ----------------------------------------------------------------------
682	# USAGE: Connect ?<host:port>,<host:port>...?
683	#
684	# Clients use this method to establish a connection to a new
685	# server, or to reestablish a connection to the previous server.
686	# Any existing connection is automatically closed.
687	# ----------------------------------------------------------------------
688	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
689	global readyForNextFrame
690	set readyForNextFrame 1
691	set _reset 1
692	set _hosts [GetServerList "vtkvis"]
693	if { "" == $_hosts } {
694	return 0
695	}
696	set result [VisViewer::Connect $_hosts]
697	if { $result } {
698	set w [winfo width $itk_component(view)]
699	set h [winfo height $itk_component(view)]
700	EventuallyResize $w $h
701	}
702	return $result
703	}
704
705	#
706	# isconnected --
707	#
708	# Indicates if we are currently connected to the visualization server.
709	#
710	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
711	return [VisViewer::IsConnected]
712	}
713
714	#
715	# disconnect --
716	#
717	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
718	Disconnect
719	set _reset 1
720	}
721
722	#
723	# Disconnect --
724	#
725	# Clients use this method to disconnect from the current rendering
726	# server.
727	#
728	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
729	VisViewer::Disconnect
730
731	$_dispatcher cancel !rebuild
732	$_dispatcher cancel !resize
733	$_dispatcher cancel !rotate
734	$_dispatcher cancel !legend
735	# disconnected -- no more data sitting on server
736	set _outbuf ""
737	array unset _datasets
738	array unset _data
739	array unset _colormaps
740	array unset _obj2datasets
741	global readyForNextFrame
742	set readyForNextFrame 1
743	}
744
745	#
746	# sendto --
747	#
748	itcl::body Rappture::VtkHeightmapViewer::sendto { bytes } {
749	SendBytes "$bytes\n"
750	}
751
752	#
753	# SendCmd
754	#
755	# Send commands off to the rendering server. If we're currently
756	# sending data objects to the server, buffer the commands to be
757	# sent later.
758	#
759	itcl::body Rappture::VtkHeightmapViewer::SendCmd {string} {
760	if { $_buffering } {
761	append _outbuf $string "\n"
762	} else {
763	SendBytes "$string\n"
764	}
765	}
766
767	#
768	# SendCmdNoWait
769	#
770	# Send commands off to the rendering server. If we're currently
771	# sending data objects to the server, buffer the commands to be
772	# sent later.
773	#
774	itcl::body Rappture::VtkHeightmapViewer::SendCmdNoWait {string} {
775	if { $_buffering } {
776	append _outbuf $string "\n"
777	} else {
778	SendBytes "$string\n"
779	}
780	}
781
782	# ----------------------------------------------------------------------
783	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
784	#
785	# Invoked automatically whenever the "image" command comes in from
786	# the rendering server. Indicates that binary image data with the
787	# specified <size> will follow.
788	# ----------------------------------------------------------------------
789	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
790	global readyForNextFrame
791	set readyForNextFrame 1
792	array set info {
793	-token "???"
794	-bytes 0
795	-type image
796	}
797	array set info $args
798	set bytes [ReceiveBytes $info(-bytes)]
799	if { $info(-type) == "image" } {
800	if 0 {
801	set f [open "last.ppm" "w"]
802	puts $f $bytes
803	close $f
804	}
805	$_image(plot) configure -data $bytes
806	set time [clock seconds]
807	set date [clock format $time]
808	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
809	if { $_start > 0 } {
810	set finish [clock clicks -milliseconds]
811	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
812	set _start 0
813	}
814	} elseif { $info(type) == "print" } {
815	set tag $this-print-$info(-token)
816	set _hardcopy($tag) $bytes
817	}
818	}
819
820	#
821	# ReceiveDataset --
822	#
823	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
824	if { ![isconnected] } {
825	return
826	}
827	set option [lindex $args 0]
828	switch -- $option {
829	"scalar" {
830	set option [lindex $args 1]
831	switch -- $option {
832	"world" {
833	foreach { x y z value tag } [lrange $args 2 end] break
834	}
835	"pixel" {
836	foreach { x y value tag } [lrange $args 2 end] break
837	}
838	}
839	}
840	"vector" {
841	set option [lindex $args 1]
842	switch -- $option {
843	"world" {
844	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
845	}
846	"pixel" {
847	foreach { x y vx vy vz tag } [lrange $args 2 end] break
848	}
849	}
850	}
851	"names" {
852	foreach { name } [lindex $args 1] {
853	#puts stderr "Dataset: $name"
854	}
855	}
856	default {
857	error "unknown dataset option \"$option\" from server"
858	}
859	}
860	}
861
862	# ----------------------------------------------------------------------
863	# USAGE: Rebuild
864	#
865	# Called automatically whenever something changes that affects the
866	# data in the widget. Clears any existing data and rebuilds the
867	# widget to display new data.
868	# ----------------------------------------------------------------------
869	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
870	set w [winfo width $itk_component(view)]
871	set h [winfo height $itk_component(view)]
872	if { $w < 2 \|\| $h < 2 } {
873	$_dispatcher event -idle !rebuild
874	return
875	}
876
877	set _buffering 1
878	# Turn on buffering of commands to the server. We don't want to
879	# be preempted by a server disconnect/reconnect (which automatically
880	# generates a new call to Rebuild).
881	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
882	set _width $w
883	set _height $h
884	$_arcball resize $w $h
885	DoResize
886	if { $_settings(stretchToFit) } {
887	AdjustSetting stretchToFit
888	}
889	}
890	if { $_reset } {
891	if 1 {
892	# Tell the server the name of the tool, the version, and dataset
893	# that we are rendering. Have to do it here because we don't know
894	# what data objects are using the renderer until be get here.
895	global env
896
897	set info {}
898	set user "???"
899	if { [info exists env(USER)] } {
900	set user $env(USER)
901	}
902	set session "???"
903	if { [info exists env(SESSION)] } {
904	set session $env(SESSION)
905	}
906	lappend info "hub" [exec hostname]
907	lappend info "client" "vtkheightmapviewer"
908	lappend info "user" $user
909	lappend info "session" $session
910	SendCmd "clientinfo [list $info]"
911	}
912	InitSettings isHeightmap background
913	#
914	# Reset the camera and other view parameters
915	#
916	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
917	SendCmd "axis lrot z 90"
918	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
919	$_arcball quaternion $q
920	if {$_settings(isHeightmap) } {
921	if { $_view(ortho)} {
922	SendCmd "camera mode ortho"
923	} else {
924	SendCmd "camera mode persp"
925	}
926	SendCmd "camera reset"
927	DoRotate
928	}
929	PanCamera
930	SendCmd "imgflush"
931	}
932
933	set _first ""
934	# Start off with no datasets are visible.
935	SendCmd "dataset visible 0"
936	set scale [GetHeightmapScale]
937	foreach dataobj [get -objects] {
938	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
939	set _first $dataobj
940	}
941	scale $dataobj
942	set _obj2datasets($dataobj) ""
943	foreach comp [$dataobj components] {
944	set tag $dataobj-$comp
945	if { ![info exists _datasets($tag)] } {
946	set bytes [$dataobj vtkdata $comp]
947	if 1 {
948	set f [open /tmp/vtkheightmap.vtk "w"]
949	puts $f $bytes
950	close $f
951	}
952	set length [string length $bytes]
953	if 1 {
954	set info {}
955	lappend info "tool_id" [$dataobj hints toolId]
956	lappend info "tool_name" [$dataobj hints toolName]
957	lappend info "tool_version" [$dataobj hints toolRevision]
958	lappend info "tool_title" [$dataobj hints toolTitle]
959	lappend info "dataset_label" [$dataobj hints label]
960	lappend info "dataset_size" $length
961	lappend info "dataset_tag" $tag
962	SendCmd [list "clientinfo" $info]
963	}
964	append _outbuf "dataset add $tag data follows $length\n"
965	append _outbuf $bytes
966	set _datasets($tag) 1
967	SetObjectStyle $dataobj $comp
968	}
969	lappend _obj2datasets($dataobj) $tag
970	if { [info exists _obj2ovride($dataobj-raise)] } {
971	SendCmd "heightmap visible 1 $tag"
972	}
973	if { ![info exists _comp2scale($tag)] \|\|
974	$_comp2scale($tag) != $scale } {
975	SendCmd "heightmap heightscale $scale $tag"
976	set _comp2scale($tag) $scale
977	}
978	}
979	}
980	if { $_first != "" } {
981	$itk_component(field) choices delete 0 end
982	$itk_component(fieldmenu) delete 0 end
983	array unset _fields
984	foreach cname [$_first components] {
985	foreach fname [$_first fieldnames $cname] {
986	if { [info exists _fields($fname)] } {
987	continue
988	}
989	foreach { label units components } \
990	[$_first fieldinfo $fname] break
991	$itk_component(field) choices insert end "$fname" "$label"
992	$itk_component(fieldmenu) add radiobutton -label "$label" \
993	-value $label -variable [itcl::scope _curFldLabel] \
994	-selectcolor red \
995	-activebackground $itk_option(-plotbackground) \
996	-activeforeground $itk_option(-plotforeground) \
997	-font "Arial 8" \
998	-command [itcl::code $this Combo invoke]
999	set _fields($fname) [list $label $units $components]
1000	set _curFldName $fname
1001	set _curFldLabel $label
1002	}
1003	}
1004	$itk_component(field) value $_curFldLabel
1005	}
1006	InitSettings stretchToFit
1007
1008	if { $_reset } {
1009	SendCmd "axis tickpos outside"
1010	foreach axis { x y z } {
1011	SendCmd "axis lformat $axis %g"
1012	}
1013
1014	foreach axis { x y z } {
1015	set label [$_first hints ${axis}label]
1016	if { $label == "" } {
1017	if {$axis == "z"} {
1018	if { $_curFldName == "component" } {
1019	set label [string toupper $axis]
1020	} else {
1021	set label $_curFldLabel
1022	}
1023	} else {
1024	set label [string toupper $axis]
1025	}
1026	}
1027	# May be a space in the axis label.
1028	SendCmd [list axis name $axis $label]
1029
1030	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1031	set units [lindex $_fields($_curFldName) 1]
1032	} else {
1033	set units [$_first hints ${axis}units]
1034	}
1035	if { $units != "" } {
1036	# May be a space in the axis units.
1037	SendCmd [list axis units $axis $units]
1038	}
1039	}
1040	#
1041	# Reset the camera and other view parameters
1042	#
1043	SendCmd "axis color all [Color2RGB $itk_option(-plotforeground)]"
1044	SendCmd "dataset color [Color2RGB $itk_option(-plotforeground)]"
1045	ResetAxes
1046	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1047	$_arcball quaternion $q
1048	if {$_settings(isHeightmap) } {
1049	if { $_view(ortho)} {
1050	SendCmd "camera mode ortho"
1051	} else {
1052	SendCmd "camera mode persp"
1053	}
1054	SendCmd "camera reset"
1055	DoRotate
1056	}
1057	PanCamera
1058	InitSettings axisXGrid axisYGrid axisZGrid \
1059	axisVisible axisLabels
1060	InitSettings opacity heightmapScale lighting edges wireframe \
1061	colormap field outline isHeightmap
1062	set _reset 0
1063	}
1064	global readyForNextFrame
1065	set readyForNextFrame 0; # Don't advance to the next frame
1066	set _buffering 0; # Turn off buffering.
1067
1068	# Actually write the commands to the server socket. If it fails, we don't
1069	# care. We're finished here.
1070	blt::busy hold $itk_component(hull)
1071	sendto $_outbuf;
1072	blt::busy release $itk_component(hull)
1073	set _outbuf ""; # Clear the buffer.
1074	}
1075
1076	# ----------------------------------------------------------------------
1077	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1078	#
1079	# Returns a list of server IDs for the current datasets being displayed. This
1080	# is normally a single ID, but it might be a list of IDs if the current data
1081	# object has multiple components.
1082	# ----------------------------------------------------------------------
1083	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1084	set flag [lindex $args 0]
1085	switch -- $flag {
1086	"-all" {
1087	if { [llength $args] > 1 } {
1088	error "CurrentDatasets: can't specify dataobj after \"-all\""
1089	}
1090	set dlist [get -objects]
1091	}
1092	"-visible" {
1093	if { [llength $args] > 1 } {
1094	set dlist {}
1095	set args [lrange $args 1 end]
1096	foreach dataobj $args {
1097	if { [info exists _obj2ovride($dataobj-raise)] } {
1098	lappend dlist $dataobj
1099	}
1100	}
1101	} else {
1102	set dlist [get -visible]
1103	}
1104	}
1105	default {
1106	set dlist $args
1107	}
1108	}
1109	set rlist ""
1110	foreach dataobj $dlist {
1111	foreach comp [$dataobj components] {
1112	set tag $dataobj-$comp
1113	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1114	lappend rlist $tag
1115	}
1116	}
1117	}
1118	return $rlist
1119	}
1120
1121	# ----------------------------------------------------------------------
1122	# USAGE: Zoom in
1123	# USAGE: Zoom out
1124	# USAGE: Zoom reset
1125	#
1126	# Called automatically when the user clicks on one of the zoom
1127	# controls for this widget. Changes the zoom for the current view.
1128	# ----------------------------------------------------------------------
1129	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1130	switch -- $option {
1131	"in" {
1132	set _view(zoom) [expr {$_view(zoom)*1.25}]
1133	SendCmd "camera zoom $_view(zoom)"
1134	}
1135	"out" {
1136	set _view(zoom) [expr {$_view(zoom)*0.8}]
1137	SendCmd "camera zoom $_view(zoom)"
1138	}
1139	"reset" {
1140	array set _view {
1141	qw 0.36
1142	qx 0.25
1143	qy 0.50
1144	qz 0.70
1145	zoom 1.0
1146	xpan 0
1147	ypan 0
1148	}
1149	if { $_first != "" } {
1150	set location [$_first hints camera]
1151	if { $location != "" } {
1152	array set _view $location
1153	}
1154	}
1155	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1156	$_arcball quaternion $q
1157	SendCmd "camera reset"
1158	if {$_settings(isHeightmap) } {
1159	DoRotate
1160	}
1161	}
1162	}
1163	}
1164
1165	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1166	set x $_view(xpan)
1167	set y $_view(ypan)
1168	SendCmd "camera pan $x $y"
1169	}
1170
1171
1172	# ----------------------------------------------------------------------
1173	# USAGE: Rotate click <x> <y>
1174	# USAGE: Rotate drag <x> <y>
1175	# USAGE: Rotate release <x> <y>
1176	#
1177	# Called automatically when the user clicks/drags/releases in the
1178	# plot area. Moves the plot according to the user's actions.
1179	# ----------------------------------------------------------------------
1180	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1181	switch -- $option {
1182	"click" {
1183	$itk_component(view) configure -cursor fleur
1184	set _click(x) $x
1185	set _click(y) $y
1186	}
1187	"drag" {
1188	if {[array size _click] == 0} {
1189	Rotate click $x $y
1190	} else {
1191	set w [winfo width $itk_component(view)]
1192	set h [winfo height $itk_component(view)]
1193	if {$w <= 0 \|\| $h <= 0} {
1194	return
1195	}
1196
1197	if {[catch {
1198	# this fails sometimes for no apparent reason
1199	set dx [expr {double($x-$_click(x))/$w}]
1200	set dy [expr {double($y-$_click(y))/$h}]
1201	}]} {
1202	return
1203	}
1204	if { $dx == 0 && $dy == 0 } {
1205	return
1206	}
1207	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1208	EventuallyRotate $q
1209	set _click(x) $x
1210	set _click(y) $y
1211	}
1212	}
1213	"release" {
1214	Rotate drag $x $y
1215	$itk_component(view) configure -cursor ""
1216	catch {unset _click}
1217	}
1218	default {
1219	error "bad option \"$option\": should be click, drag, release"
1220	}
1221	}
1222	}
1223
1224	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1225	foreach tag [CurrentDatasets -visible] {
1226	SendCmd "dataset getscalar pixel $x $y $tag"
1227	}
1228	}
1229
1230	# ----------------------------------------------------------------------
1231	# USAGE: $this Pan click x y
1232	# $this Pan drag x y
1233	# $this Pan release x y
1234	#
1235	# Called automatically when the user clicks on one of the zoom
1236	# controls for this widget. Changes the zoom for the current view.
1237	# ----------------------------------------------------------------------
1238	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1239	switch -- $option {
1240	"set" {
1241	set w [winfo width $itk_component(view)]
1242	set h [winfo height $itk_component(view)]
1243	set x [expr $x / double($w)]
1244	set y [expr $y / double($h)]
1245	set _view(xpan) [expr $_view(xpan) + $x]
1246	set _view(ypan) [expr $_view(ypan) + $y]
1247	PanCamera
1248	return
1249	}
1250	"click" {
1251	set _click(x) $x
1252	set _click(y) $y
1253	$itk_component(view) configure -cursor hand1
1254	}
1255	"drag" {
1256	if { ![info exists _click(x)] } {
1257	set _click(x) $x
1258	}
1259	if { ![info exists _click(y)] } {
1260	set _click(y) $y
1261	}
1262	set w [winfo width $itk_component(view)]
1263	set h [winfo height $itk_component(view)]
1264	set dx [expr ($_click(x) - $x)/double($w)]
1265	set dy [expr ($_click(y) - $y)/double($h)]
1266	set _click(x) $x
1267	set _click(y) $y
1268	set _view(xpan) [expr $_view(xpan) - $dx]
1269	set _view(ypan) [expr $_view(ypan) - $dy]
1270	PanCamera
1271	}
1272	"release" {
1273	Pan drag $x $y
1274	$itk_component(view) configure -cursor ""
1275	}
1276	default {
1277	error "unknown option \"$option\": should set, click, drag, or release"
1278	}
1279	}
1280	}
1281
1282	# ----------------------------------------------------------------------
1283	# USAGE: InitSettings <what> ?<value>?
1284	#
1285	# Used internally to update rendering settings whenever parameters
1286	# change in the popup settings panel. Sends the new settings off
1287	# to the back end.
1288	# ----------------------------------------------------------------------
1289	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1290	foreach spec $args {
1291	if { [info exists _settings($_first-$spec)] } {
1292	# Reset global setting with dataobj specific setting
1293	set _settings($spec) $_settings($_first-$spec)
1294	}
1295	AdjustSetting $spec
1296	}
1297	}
1298
1299	#
1300	# AdjustSetting --
1301	#
1302	# Changes/updates a specific setting in the widget. There are
1303	# usually user-setable option. Commands are sent to the render
1304	# server.
1305	#
1306	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1307	if { $_beforeConnect } {
1308	return
1309	}
1310	switch -- $what {
1311	"axisFlymode" {
1312	set mode [$itk_component(axisflymode) value]
1313	set mode [$itk_component(axisflymode) translate $mode]
1314	set _settings($what) $mode
1315	SendCmd "axis flymode $mode"
1316	}
1317	"axisLabels" {
1318	set bool $_settings(axisLabels)
1319	SendCmd "axis labels all $bool"
1320	}
1321	"axisMinorTicks" {
1322	set bool $_settings(axisMinorTicks)
1323	foreach axis { x y z } {
1324	SendCmd "axis minticks ${axis} $bool"
1325	}
1326	}
1327	"axisVisible" {
1328	set bool $_settings(axisVisible)
1329	SendCmd "axis visible all $bool"
1330	}
1331	"axisXGrid" - "axisYGrid" - "axisZGrid" {
1332	set axis [string tolower [string range $what 4 4]]
1333	set bool $_settings($what)
1334	SendCmd "axis grid $axis $bool"
1335	}
1336	"background" {
1337	set bgcolor [$itk_component(background) value]
1338	array set fgcolors {
1339	"black" "white"
1340	"white" "black"
1341	"grey" "black"
1342	}
1343	configure -plotbackground $bgcolor \
1344	-plotforeground $fgcolors($bgcolor)
1345	$itk_component(view) delete "legend"
1346	DrawLegend $_curFldName
1347	}
1348	"colormap" {
1349	set color [$itk_component(colormap) value]
1350	set _settings(colormap) $color
1351	if { $color == "none" } {
1352	if { $_settings(colormapVisible) } {
1353	SendCmd "heightmap surface 0"
1354	set _settings(colormapVisible) 0
1355	}
1356	} else {
1357	if { !$_settings(colormapVisible) } {
1358	SendCmd "heightmap surface 1"
1359	set _settings(colormapVisible) 1
1360	}
1361	ResetColormap $color
1362	SendCmd "heightmap colormap $_currentColormap"
1363	}
1364	SendCmdNoWait "heightmap colormode scalar $_curFldName"
1365	SendCmdNoWait "dataset scalar $_curFldName"
1366	EventuallyRequestLegend
1367	}
1368	"colormapVisible" {
1369	set bool $_settings($what)
1370	SendCmd "heightmap surface $bool"
1371	}
1372	"edges" {
1373	set bool $_settings(edges)
1374	SendCmd "heightmap edges $bool"
1375	}
1376	"field" {
1377	set label [$itk_component(field) value]
1378	set fname [$itk_component(field) translate $label]
1379	set _settings(field) $fname
1380	if { [info exists _fields($fname)] } {
1381	foreach { label units components } $_fields($fname) break
1382	if { $components > 1 } {
1383	set _colorMode vmag
1384	} else {
1385	set _colorMode scalar
1386	}
1387	set _curFldName $fname
1388	set _curFldLabel $label
1389	} else {
1390	puts stderr "unknown field \"$fname\""
1391	return
1392	}
1393	EventuallyRequestLegend
1394	}
1395	"heightmapScale" {
1396	if { $_settings(isHeightmap) } {
1397	set scale [GetHeightmapScale]
1398	foreach dataset [CurrentDatasets -all] {
1399	SendCmd "heightmap heightscale $scale $dataset"
1400	set _comp2scale($dataset) $scale
1401	}
1402	ResetAxes
1403	}
1404	}
1405	"isHeightmap" {
1406	set bool $_settings(isHeightmap)
1407	set c $itk_component(view)
1408	incr _buffering
1409	if { $_buffering == 1 } {
1410	set _outbuf ""
1411	}
1412	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1413	if { $bool } {
1414	set _settings(heightmapScale) 50
1415	set _settings(opacity) $_settings(saveOpacity)
1416	set _settings(lighting) $_settings(saveLighting)
1417	} else {
1418	set _settings(heightmapScale) 0
1419	set _settings(lighting) 0
1420	set _settings(opacity) 100
1421	}
1422	AdjustSetting lighting
1423	AdjustSetting opacity
1424	set scale [GetHeightmapScale]
1425	foreach dataset [CurrentDatasets -all] {
1426	SendCmd "heightmap heightscale $scale $dataset"
1427	set _comp2scale($dataset) $scale
1428	}
1429	if { $bool } {
1430	$itk_component(lighting) configure -state normal
1431	$itk_component(opacity) configure -state normal
1432	$itk_component(scale) configure -state normal
1433	$itk_component(opacity_l) configure -state normal
1434	$itk_component(scale_l) configure -state normal
1435	if {$_view(ortho)} {
1436	SendCmd "camera mode ortho"
1437	} else {
1438	SendCmd "camera mode persp"
1439	}
1440	} else {
1441	$itk_component(lighting) configure -state disabled
1442	$itk_component(opacity) configure -state disabled
1443	$itk_component(scale) configure -state disabled
1444	$itk_component(opacity_l) configure -state disabled
1445	$itk_component(scale_l) configure -state disabled
1446	SendCmd "camera mode image"
1447	}
1448	if {$_settings(stretchToFit)} {
1449	if {$scale == 0} {
1450	SendCmd "camera aspect window"
1451	} else {
1452	SendCmd "camera aspect square"
1453	}
1454	}
1455	SendCmd "camera reset"
1456	ResetAxes
1457	if { $bool } {
1458	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1459	$_arcball quaternion $q
1460	SendCmd "camera orient $q"
1461	} else {
1462	bind $c <ButtonPress-1> {}
1463	bind $c <B1-Motion> {}
1464	bind $c <ButtonRelease-1> {}
1465	}
1466	# Fix the mouse bindings for rotation/panning and the
1467	# camera mode. Ideally we'd create a bindtag for these.
1468	if { $bool } {
1469	# Bindings for rotation via mouse
1470	bind $c <ButtonPress-1> \
1471	[itcl::code $this Rotate click %x %y]
1472	bind $c <B1-Motion> \
1473	[itcl::code $this Rotate drag %x %y]
1474	bind $c <ButtonRelease-1> \
1475	[itcl::code $this Rotate release %x %y]
1476	}
1477	incr _buffering -1
1478	if { $_buffering == 0 } {
1479	sendto $_outbuf
1480	set _outbuf ""
1481	}
1482	}
1483	"isolineColor" {
1484	set color [$itk_component(isolinecolor) value]
1485	if { $color == "none" } {
1486	if { $_settings(isolinesVisible) } {
1487	SendCmd "heightmap isolines 0"
1488	set _settings(isolinesVisible) 0
1489	}
1490	} else {
1491	if { !$_settings(isolinesVisible) } {
1492	SendCmd "heightmap isolines 1"
1493	set _settings(isolinesVisible) 1
1494	}
1495	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1496	}
1497	DrawLegend $_curFldName
1498	}
1499	"isolinesVisible" {
1500	set bool $_settings($what)
1501	SendCmd "heightmap isolines $bool"
1502	}
1503	"legendVisible" {
1504	if { !$_settings($what) } {
1505	$itk_component(view) delete legend
1506	}
1507	DrawLegend $_curFldName
1508	}
1509	"lighting" {
1510	if { $_settings(isHeightmap) } {
1511	set _settings(saveLighting) $_settings(lighting)
1512	set bool $_settings($what)
1513	SendCmd "heightmap lighting $bool"
1514	} else {
1515	SendCmd "heightmap lighting 0"
1516	}
1517	}
1518	"numIsolines" {
1519	set _settings(numIsolines) [$itk_component(numisolines) value]
1520	SendCmd "heightmap numcontours $_settings(numIsolines)"
1521	DrawLegend $_curFldName
1522	}
1523	"opacity" {
1524	if { $_settings(isHeightmap) } {
1525	set _settings(saveOpacity) $_settings(opacity)
1526	set val $_settings(opacity)
1527	set sval [expr { 0.01 * double($val) }]
1528	SendCmd "heightmap opacity $sval"
1529	} else {
1530	SendCmd "heightmap opacity 1"
1531	}
1532	}
1533	"outline" {
1534	set bool $_settings($what)
1535	SendCmd "dataset outline $bool"
1536	}
1537	"stretchToFit" {
1538	set bool $_settings($what)
1539	if { $bool } {
1540	set heightScale [GetHeightmapScale]
1541	if {$heightScale == 0} {
1542	SendCmd "camera aspect window"
1543	} else {
1544	SendCmd "camera aspect square"
1545	}
1546	} else {
1547	SendCmd "camera aspect native"
1548	}
1549	}
1550	"wireframe" {
1551	set bool $_settings($what)
1552	SendCmd "heightmap wireframe $bool"
1553	}
1554	default {
1555	error "don't know how to fix $what"
1556	}
1557	}
1558	}
1559
1560	#
1561	# RequestLegend --
1562	#
1563	# Request a new legend from the server. The size of the legend
1564	# is determined from the height of the canvas.
1565	#
1566	# This should be called when
1567	# 1. A new current colormap is set.
1568	# 2. Window is resized.
1569	# 3. The limits of the data have changed. (Just need a redraw).
1570	# 4. Number of isolines have changed. (Just need a redraw).
1571	# 5. Legend becomes visible (Just need a redraw).
1572	#
1573	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1574	set _legendPending 0
1575	set font "Arial 8"
1576	set lineht [font metrics $font -linespace]
1577	set c $itk_component(view)
1578	set w 12
1579	set h [expr {$_height - 2 * ($lineht + 2)}]
1580	if { $h < 1} {
1581	return
1582	}
1583	# Set the legend on the first heightmap dataset.
1584	if { $_currentColormap != "" } {
1585	set cmap $_currentColormap
1586	SendCmdNoWait "legend $cmap scalar $_curFldName {} $w $h 0"
1587	SendCmdNoWait "heightmap colormode scalar $_curFldName"
1588	SendCmdNoWait "dataset scalar $_curFldName"
1589	}
1590	}
1591
1592	#
1593	# ResetAxes --
1594	#
1595	# Set axis z bounds and range
1596	#
1597	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1598	if { ![info exists _limits(v)] \|\| ![info exists _fields($_curFldName)]} {
1599	SendCmd "dataset maprange all"
1600	SendCmd "axis autorange z on"
1601	SendCmd "axis autobounds z on"
1602	return
1603	}
1604	foreach { xmin xmax } $_limits(x) break
1605	foreach { ymin ymax } $_limits(y) break
1606	foreach { vmin vmax } $_limits(v) break
1607	set dataRange [expr $vmax - $vmin]
1608	set boundsRange [expr $xmax - $xmin]
1609	set r [expr $ymax - $ymin]
1610	if {$r > $boundsRange} {
1611	set boundsRange $r
1612	}
1613	if {$dataRange < 1.0e-10} {
1614	set dataScale 1.0
1615	} else {
1616	set dataScale [expr $boundsRange / $dataRange]
1617	}
1618	set heightScale [GetHeightmapScale]
1619	set bMin [expr $heightScale * $dataScale * $vmin]
1620	set bMax [expr $heightScale * $dataScale * $vmax]
1621	SendCmd "dataset maprange explicit $_limits(v) $_curFldName"
1622	SendCmd "axis bounds z $bMin $bMax"
1623	SendCmd "axis range z $_limits(v)"
1624	}
1625
1626	#
1627	# SetCurrentColormap --
1628	#
1629	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { stylelist } {
1630	array set style {
1631	-color BCGYR
1632	-levels 10
1633	-opacity 1.0
1634	}
1635	array set style $stylelist
1636
1637	set name "$style(-color):$style(-levels):$style(-opacity)"
1638	if { ![info exists _colormaps($name)] } {
1639	set stylelist [array get style]
1640	BuildColormap $name $stylelist
1641	set _colormaps($name) $stylelist
1642	}
1643	set _currentColormap $name
1644	}
1645
1646
1647	#
1648	# BuildColormap --
1649	#
1650	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name stylelist } {
1651	array set style $stylelist
1652	set cmap [ColorsToColormap $style(-color)]
1653	if { [llength $cmap] == 0 } {
1654	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1655	}
1656	if { ![info exists _settings(opacity)] } {
1657	set _settings(opacity) $style(-opacity)
1658	}
1659	set max $_settings(opacity)
1660
1661	set wmap "0.0 1.0 1.0 1.0"
1662	SendCmd "colormap add $name { $cmap } { $wmap }"
1663	}
1664
1665	# ----------------------------------------------------------------------
1666	# CONFIGURATION OPTION: -mode
1667	# ----------------------------------------------------------------------
1668	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1669	switch -- $itk_option(-mode) {
1670	"heightmap" {
1671	set _settings(isHeightmap) 1
1672	}
1673	"contour" {
1674	set _settings(isHeightmap) 0
1675	}
1676	default {
1677	error "unknown mode settings \"$itk_option(-mode)\""
1678	}
1679	}
1680	AdjustSetting isHeightmap
1681	}
1682
1683	# ----------------------------------------------------------------------
1684	# CONFIGURATION OPTION: -plotbackground
1685	# ----------------------------------------------------------------------
1686	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1687	if { [isconnected] } {
1688	set rgb [Color2RGB $itk_option(-plotbackground)]
1689	SendCmd "screen bgcolor $rgb"
1690	$itk_component(view) configure -background $itk_option(-plotbackground)
1691	}
1692	}
1693
1694	# ----------------------------------------------------------------------
1695	# CONFIGURATION OPTION: -plotforeground
1696	# ----------------------------------------------------------------------
1697	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1698	if { [isconnected] } {
1699	set rgb [Color2RGB $itk_option(-plotforeground)]
1700	SendCmd "dataset color $rgb"
1701	SendCmd "axis color all $rgb"
1702	}
1703	}
1704
1705	itcl::body Rappture::VtkHeightmapViewer::limits { dataobj } {
1706	lappend limits x [$dataobj limits x]
1707	lappend limits y [$dataobj limits y]
1708	lappend limits v [$dataobj limits v]
1709	return $limits
1710	}
1711
1712	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1713
1714	set fg [option get $itk_component(hull) font Font]
1715	#set bfg [option get $itk_component(hull) boldFont Font]
1716
1717	set inner [$itk_component(main) insert end \
1718	-title "Contour/Surface Settings" \
1719	-icon [Rappture::icon contour]]
1720	$inner configure -borderwidth 4
1721
1722	checkbutton $inner.legend \
1723	-text "Legend" \
1724	-variable [itcl::scope _settings(legendVisible)] \
1725	-command [itcl::code $this AdjustSetting legendVisible] \
1726	-font "Arial 9"
1727
1728	checkbutton $inner.wireframe \
1729	-text "Wireframe" \
1730	-variable [itcl::scope _settings(wireframe)] \
1731	-command [itcl::code $this AdjustSetting wireframe] \
1732	-font "Arial 9"
1733
1734	itk_component add lighting {
1735	checkbutton $inner.lighting \
1736	-text "Enable Lighting" \
1737	-variable [itcl::scope _settings(lighting)] \
1738	-command [itcl::code $this AdjustSetting lighting] \
1739	-font "Arial 9"
1740	} {
1741	ignore -font
1742	}
1743	checkbutton $inner.edges \
1744	-text "Edges" \
1745	-variable [itcl::scope _settings(edges)] \
1746	-command [itcl::code $this AdjustSetting edges] \
1747	-font "Arial 9"
1748
1749	checkbutton $inner.outline \
1750	-text "Outline" \
1751	-variable [itcl::scope _settings(outline)] \
1752	-command [itcl::code $this AdjustSetting outline] \
1753	-font "Arial 9"
1754
1755	checkbutton $inner.stretch \
1756	-text "Stretch to fit" \
1757	-variable [itcl::scope _settings(stretchToFit)] \
1758	-command [itcl::code $this AdjustSetting stretchToFit] \
1759	-font "Arial 9"
1760
1761	label $inner.field_l -text "Field" -font "Arial 9"
1762	itk_component add field {
1763	Rappture::Combobox $inner.field -width 10 -editable no
1764	}
1765	bind $inner.field <<Value>> \
1766	[itcl::code $this AdjustSetting field]
1767
1768	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1769	itk_component add colormap {
1770	Rappture::Combobox $inner.colormap -width 10 -editable no
1771	}
1772	$inner.colormap choices insert end \
1773	"BCGYR" "BCGYR" \
1774	"BGYOR" "BGYOR" \
1775	"blue" "blue" \
1776	"blue-to-brown" "blue-to-brown" \
1777	"blue-to-orange" "blue-to-orange" \
1778	"blue-to-grey" "blue-to-grey" \
1779	"green-to-magenta" "green-to-magenta" \
1780	"greyscale" "greyscale" \
1781	"nanohub" "nanohub" \
1782	"rainbow" "rainbow" \
1783	"spectral" "spectral" \
1784	"ROYGB" "ROYGB" \
1785	"RYGCB" "RYGCB" \
1786	"brown-to-blue" "brown-to-blue" \
1787	"grey-to-blue" "grey-to-blue" \
1788	"orange-to-blue" "orange-to-blue" \
1789	"none" "none"
1790
1791	$itk_component(colormap) value "BCGYR"
1792	bind $inner.colormap <<Value>> \
1793	[itcl::code $this AdjustSetting colormap]
1794
1795	label $inner.isolinecolor_l -text "Isolines" -font "Arial 9"
1796	itk_component add isolinecolor {
1797	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1798	}
1799	$inner.isolinecolor choices insert end \
1800	"black" "black" \
1801	"blue" "blue" \
1802	"cyan" "cyan" \
1803	"green" "green" \
1804	"grey" "grey" \
1805	"magenta" "magenta" \
1806	"orange" "orange" \
1807	"red" "red" \
1808	"white" "white" \
1809	"none" "none"
1810
1811	$itk_component(isolinecolor) value "black"
1812	bind $inner.isolinecolor <<Value>> \
1813	[itcl::code $this AdjustSetting isolineColor]
1814
1815	label $inner.background_l -text "Background" -font "Arial 9"
1816	itk_component add background {
1817	Rappture::Combobox $inner.background -width 10 -editable no
1818	}
1819	$inner.background choices insert end \
1820	"black" "black" \
1821	"white" "white" \
1822	"grey" "grey"
1823
1824	$itk_component(background) value "white"
1825	bind $inner.background <<Value>> [itcl::code $this AdjustSetting background]
1826
1827	itk_component add opacity_l {
1828	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1829	} {
1830	ignore -font
1831	}
1832	itk_component add opacity {
1833	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1834	-variable [itcl::scope _settings(opacity)] \
1835	-showvalue off \
1836	-command [itcl::code $this AdjustSetting opacity]
1837	}
1838	itk_component add scale_l {
1839	label $inner.scale_l -text "Scale" -font "Arial 9"
1840	} {
1841	ignore -font
1842	}
1843	itk_component add scale {
1844	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1845	-variable [itcl::scope _settings(heightmapScale)] \
1846	-showvalue off \
1847	-command [itcl::code $this AdjustSetting heightmapScale]
1848	}
1849	label $inner.numisolines_l -text "No. Isolines" -font "Arial 9"
1850	itk_component add numisolines {
1851	Rappture::Spinint $inner.numisolines \
1852	-min 0 -max 50 -font "arial 9"
1853	}
1854	$itk_component(numisolines) value $_settings(numIsolines)
1855	bind $itk_component(numisolines) <<Value>> \
1856	[itcl::code $this AdjustSetting numIsolines]
1857
1858	blt::table $inner \
1859	0,0 $inner.colormap_l -anchor w -pady 2 \
1860	0,1 $inner.colormap -anchor w -pady 2 -fill x \
1861	1,0 $inner.isolinecolor_l -anchor w -pady 2 \
1862	1,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
1863	2,0 $inner.background_l -anchor w -pady 2 \
1864	2,1 $inner.background -anchor w -pady 2 -fill x \
1865	3,0 $inner.numisolines_l -anchor w -pady 2 \
1866	3,1 $inner.numisolines -anchor w -pady 2 \
1867	4,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
1868	5,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1869	6,0 $inner.legend -anchor w -pady 2 -cspan 2 \
1870	7,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
1871	8,0 $inner.outline -anchor w -pady 2 -cspan 2 \
1872	10,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
1873	11,0 $inner.opacity_l -anchor w -pady 2 \
1874	11,1 $inner.opacity -fill x -pady 2 \
1875	12,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
1876	12,1 $inner.scale -fill x -pady 2 -cspan 2 \
1877
1878	if { [array size _fields] > 1 } {
1879	blt::table $inner \
1880	3,0 $inner.field_l -anchor w -pady 2 \
1881	3,1 $inner.field -anchor w -pady 2 -fill x
1882	}
1883	blt::table configure $inner r* c* -resize none
1884	blt::table configure $inner r9 -height .1i
1885	blt::table configure $inner r14 c1 -resize expand
1886	}
1887
1888	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
1889
1890	set fg [option get $itk_component(hull) font Font]
1891	#set bfg [option get $itk_component(hull) boldFont Font]
1892
1893	set inner [$itk_component(main) insert end \
1894	-title "Axis Settings" \
1895	-icon [Rappture::icon axis1]]
1896	$inner configure -borderwidth 4
1897
1898	checkbutton $inner.visible \
1899	-text "Axes" \
1900	-variable [itcl::scope _settings(axisVisible)] \
1901	-command [itcl::code $this AdjustSetting axisVisible] \
1902	-font "Arial 9"
1903	checkbutton $inner.labels \
1904	-text "Axis Labels" \
1905	-variable [itcl::scope _settings(axisLabels)] \
1906	-command [itcl::code $this AdjustSetting axisLabels] \
1907	-font "Arial 9"
1908	label $inner.grid_l -text "Grid" -font "Arial 9"
1909	checkbutton $inner.xgrid \
1910	-text "X" \
1911	-variable [itcl::scope _settings(axisXGrid)] \
1912	-command [itcl::code $this AdjustSetting axisXGrid] \
1913	-font "Arial 9"
1914	checkbutton $inner.ygrid \
1915	-text "Y" \
1916	-variable [itcl::scope _settings(axisYGrid)] \
1917	-command [itcl::code $this AdjustSetting axisYGrid] \
1918	-font "Arial 9"
1919	checkbutton $inner.zgrid \
1920	-text "Z" \
1921	-variable [itcl::scope _settings(axisZGrid)] \
1922	-command [itcl::code $this AdjustSetting axisZGrid] \
1923	-font "Arial 9"
1924	checkbutton $inner.minorticks \
1925	-text "Minor Ticks" \
1926	-variable [itcl::scope _settings(axisMinorTicks)] \
1927	-command [itcl::code $this AdjustSetting axisMinorTicks] \
1928	-font "Arial 9"
1929
1930
1931	label $inner.mode_l -text "Mode" -font "Arial 9"
1932
1933	itk_component add axisflymode {
1934	Rappture::Combobox $inner.mode -width 10 -editable no
1935	}
1936	$inner.mode choices insert end \
1937	"static_triad" "static" \
1938	"closest_triad" "closest" \
1939	"furthest_triad" "furthest" \
1940	"outer_edges" "outer"
1941	$itk_component(axisflymode) value "static"
1942	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting axisFlymode]
1943
1944	blt::table $inner \
1945	0,0 $inner.visible -anchor w -cspan 4 \
1946	1,0 $inner.labels -anchor w -cspan 4 \
1947	2,0 $inner.minorticks -anchor w -cspan 4 \
1948	4,0 $inner.grid_l -anchor w \
1949	4,1 $inner.xgrid -anchor w \
1950	4,2 $inner.ygrid -anchor w \
1951	4,3 $inner.zgrid -anchor w \
1952	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
1953	5,1 $inner.mode -fill x -cspan 3
1954
1955	blt::table configure $inner r* c* -resize none
1956	blt::table configure $inner r7 c6 -resize expand
1957	blt::table configure $inner r3 -height 0.125i
1958	}
1959
1960
1961	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
1962	set inner [$itk_component(main) insert end \
1963	-title "Camera Settings" \
1964	-icon [Rappture::icon camera]]
1965	$inner configure -borderwidth 4
1966
1967	set labels { qx qy qz qw xpan ypan zoom }
1968	set row 0
1969	foreach tag $labels {
1970	label $inner.${tag}label -text $tag -font "Arial 9"
1971	entry $inner.${tag} -font "Arial 9" -bg white \
1972	-textvariable [itcl::scope _view($tag)]
1973	bind $inner.${tag} <KeyPress-Return> \
1974	[itcl::code $this camera set ${tag}]
1975	blt::table $inner \
1976	$row,0 $inner.${tag}label -anchor e -pady 2 \
1977	$row,1 $inner.${tag} -anchor w -pady 2
1978	blt::table configure $inner r$row -resize none
1979	incr row
1980	}
1981	checkbutton $inner.ortho \
1982	-text "Orthographic Projection" \
1983	-variable [itcl::scope _view(ortho)] \
1984	-command [itcl::code $this camera set ortho] \
1985	-font "Arial 9"
1986	blt::table $inner \
1987	$row,0 $inner.ortho -columnspan 2 -anchor w -pady 2
1988	blt::table configure $inner r$row -resize none
1989	incr row
1990
1991	blt::table configure $inner c0 c1 -resize none
1992	blt::table configure $inner c2 -resize expand
1993	blt::table configure $inner r$row -resize expand
1994	}
1995
1996	#
1997	# camera --
1998	#
1999	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2000	switch -- $option {
2001	"show" {
2002	puts [array get _view]
2003	}
2004	"set" {
2005	set who [lindex $args 0]
2006	set x $_view($who)
2007	set code [catch { string is double $x } result]
2008	if { $code != 0 \|\| !$result } {
2009	return
2010	}
2011	switch -- $who {
2012	"ortho" {
2013	if {$_view(ortho)} {
2014	SendCmd "camera mode ortho"
2015	} else {
2016	SendCmd "camera mode persp"
2017	}
2018	}
2019	"xpan" - "ypan" {
2020	PanCamera
2021	}
2022	"qx" - "qy" - "qz" - "qw" {
2023	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2024	$_arcball quaternion $q
2025	EventuallyRotate $q
2026	}
2027	"zoom" {
2028	SendCmd "camera zoom $_view(zoom)"
2029	}
2030	}
2031	}
2032	}
2033	}
2034
2035	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2036	set bytes ""
2037	foreach dataobj [get] {
2038	foreach comp [$dataobj components] {
2039	set tag $dataobj-$comp
2040	#set contents [ConvertToVtkData $dataobj $comp]
2041	set contents [$dataobj vtkdata $comp]
2042	append bytes "$contents\n\n"
2043	}
2044	}
2045	return [list .vtk $bytes]
2046	}
2047
2048	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2049	if { [image width $_image(download)] > 0 &&
2050	[image height $_image(download)] > 0 } {
2051	set bytes [$_image(download) data -format "jpeg -quality 100"]
2052	set bytes [Rappture::encoding::decode -as b64 $bytes]
2053	return [list .jpg $bytes]
2054	}
2055	return ""
2056	}
2057
2058	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2059	Rappture::Balloon $popup \
2060	-title "[Rappture::filexfer::label downloadWord] as..."
2061	set inner [$popup component inner]
2062	label $inner.summary -text "" -anchor w
2063	radiobutton $inner.vtk_button -text "VTK data file" \
2064	-variable [itcl::scope _downloadPopup(format)] \
2065	-font "Arial 9 " \
2066	-value vtk
2067	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2068	radiobutton $inner.image_button -text "Image File" \
2069	-variable [itcl::scope _downloadPopup(format)] \
2070	-font "Arial 9 " \
2071	-value image
2072	Rappture::Tooltip::for $inner.image_button \
2073	"Save as digital image."
2074
2075	button $inner.ok -text "Save" \
2076	-highlightthickness 0 -pady 2 -padx 3 \
2077	-command $command \
2078	-compound left \
2079	-image [Rappture::icon download]
2080
2081	button $inner.cancel -text "Cancel" \
2082	-highlightthickness 0 -pady 2 -padx 3 \
2083	-command [list $popup deactivate] \
2084	-compound left \
2085	-image [Rappture::icon cancel]
2086
2087	blt::table $inner \
2088	0,0 $inner.summary -cspan 2 \
2089	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2090	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2091	4,1 $inner.cancel -width .9i -fill y \
2092	4,0 $inner.ok -padx 2 -width .9i -fill y
2093	blt::table configure $inner r3 -height 4
2094	blt::table configure $inner r4 -pady 4
2095	raise $inner.image_button
2096	$inner.vtk_button invoke
2097	return $inner
2098	}
2099
2100	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2101	# Parse style string.
2102	set tag $dataobj-$comp
2103	array set style {
2104	-color BCGYR
2105	-edges 0
2106	-edgecolor black
2107	-linewidth 1.0
2108	-levels 10
2109	-visible 1
2110	}
2111	if { $_currentColormap == "" } {
2112	set stylelist [$dataobj style $comp]
2113	if { $stylelist != "" } {
2114	array set style $stylelist
2115	set stylelist [array get style]
2116	SetCurrentColormap $stylelist
2117	}
2118	$itk_component(colormap) value $style(-color)
2119	}
2120	set _settings(numIsolines) $style(-levels)
2121	set scale [GetHeightmapScale]
2122	SendCmd "heightmap add numcontours $_settings(numIsolines) $scale $tag"
2123	set _comp2scale($tag) $_settings(heightmapScale)
2124	SendCmd "heightmap edges $_settings(edges) $tag"
2125	SendCmd "heightmap wireframe $_settings(wireframe) $tag"
2126	SendCmd "heightmap colormap $_currentColormap $tag"
2127	set color [$itk_component(isolinecolor) value]
2128	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2129	}
2130
2131	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2132	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2133	return 0
2134	}
2135	return 1
2136	}
2137
2138	# ----------------------------------------------------------------------
2139	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2140	#
2141	# Invoked automatically whenever the "legend" command comes in from
2142	# the rendering server. Indicates that binary image data with the
2143	# specified <size> will follow.
2144	# ----------------------------------------------------------------------
2145	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2146	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2147	set _title $title
2148	regsub {\(mag\)} $title "" _title
2149	if { [isconnected] } {
2150	set bytes [ReceiveBytes $size]
2151	if { ![info exists _image(legend)] } {
2152	set _image(legend) [image create photo]
2153	}
2154	$_image(legend) configure -data $bytes
2155	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2156	if { [catch {DrawLegend $_title} errs] != 0 } {
2157	global errorInfo
2158	puts stderr "errs=$errs errorInfo=$errorInfo"
2159	}
2160	}
2161	}
2162
2163	#
2164	# DrawLegend --
2165	#
2166	# Draws the legend in the own canvas on the right side of the plot area.
2167	#
2168	itcl::body Rappture::VtkHeightmapViewer::DrawLegend { fname } {
2169	set c $itk_component(view)
2170	set w [winfo width $c]
2171	set h [winfo height $c]
2172	set font "Arial 8"
2173	set lineht [font metrics $font -linespace]
2174
2175	if { $fname == "component" } {
2176	set title ""
2177	} else {
2178	if { [info exists _fields($fname)] } {
2179	foreach { title units } $_fields($fname) break
2180	if { $units != "" } {
2181	set title [format "%s (%s)" $title $units]
2182	}
2183	} else {
2184	set title $fname
2185	}
2186	}
2187	set x [expr $w - 2]
2188	if { !$_settings(legendVisible) } {
2189	$c delete legend
2190	return
2191	}
2192	if { [$c find withtag "legend"] == "" } {
2193	set y 2
2194	# If there's a legend title, create a text item for the title.
2195	if { $title != "" } {
2196	$c create text $x $y \
2197	-anchor ne \
2198	-fill $itk_option(-plotforeground) -tags "title legend" \
2199	-font $font
2200	incr y $lineht
2201	}
2202	$c create text $x $y \
2203	-anchor ne \
2204	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2205	-font $font
2206	incr y $lineht
2207	$c create image $x $y \
2208	-anchor ne \
2209	-image $_image(legend) -tags "colormap legend"
2210	$c create text $x [expr {$h-2}] \
2211	-anchor se \
2212	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2213	-font $font
2214	#$c bind colormap <Enter> [itcl::code $this EnterLegend %x %y]
2215	$c bind colormap <Leave> [itcl::code $this LeaveLegend]
2216	$c bind colormap <Motion> [itcl::code $this MotionLegend %x %y]
2217	}
2218	$c delete isoline
2219	set x2 $x
2220	set iw [image width $_image(legend)]
2221	set ih [image height $_image(legend)]
2222	set x1 [expr $x2 - ($iw*12)/10]
2223	set color [$itk_component(isolinecolor) value]
2224	# Draw the isolines on the legend.
2225	if { $color != "none" && $_settings(numIsolines) > 0 } {
2226	set pixels [blt::vector create \#auto]
2227	set values [blt::vector create \#auto]
2228	set range [image height $_image(legend)]
2229	# Order of pixels is max to min (max is at top of legend).
2230	$pixels seq $ih 0 $_settings(numIsolines)
2231	set offset [expr 2 + $lineht]
2232	# If there's a legend title, increase the offset by the line height.
2233	if { $title != "" } {
2234	incr offset $lineht
2235	}
2236	$pixels expr {round($pixels + $offset)}
2237	# Order of values is min to max.
2238	foreach { vmin vmax } $_limits(v) break
2239	$values seq $vmin $vmax $_settings(numIsolines)
2240	set tags "isoline legend"
2241	foreach pos [$pixels range 0 end] value [$values range end 0] {
2242	set y1 [expr int($pos)]
2243	set id [$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags]
2244	$c bind $id <Enter> [itcl::code $this EnterIsoline %x %y $value]
2245	$c bind $id <Leave> [itcl::code $this LeaveIsoline]
2246	}
2247	blt::vector destroy $pixels $values
2248	}
2249
2250	$c bind title <ButtonPress> [itcl::code $this Combo post]
2251	$c bind title <Enter> [itcl::code $this Combo activate]
2252	$c bind title <Leave> [itcl::code $this Combo deactivate]
2253	# Reset the item coordinates according the current size of the plot.
2254	$c itemconfigure title -text $title
2255	if { [info exists _limits(v)] } {
2256	foreach { vmin vmax } $_limits(v) break
2257	$c itemconfigure vmin -text [format %g $vmin]
2258	$c itemconfigure vmax -text [format %g $vmax]
2259	}
2260	set y 2
2261	# If there's a legend title, move the title to the correct position
2262	if { $title != "" } {
2263	$c coords title $x $y
2264	incr y $lineht
2265	}
2266	$c coords vmax $x $y
2267	incr y $lineht
2268	$c coords colormap $x $y
2269	$c coords vmin $x [expr {$h - 2}]
2270	}
2271
2272	#
2273	# EnterIsoline --
2274	#
2275	itcl::body Rappture::VtkHeightmapViewer::EnterIsoline { x y value } {
2276	SetIsolineTip $x $y $value
2277	}
2278
2279	#
2280	# LeaveIsoline --
2281	#
2282	itcl::body Rappture::VtkHeightmapViewer::LeaveIsoline { } {
2283	Rappture::Tooltip::tooltip cancel
2284	.rappturetooltip configure -icon ""
2285	}
2286
2287	#
2288	# SetIsolineTip --
2289	#
2290	itcl::body Rappture::VtkHeightmapViewer::SetIsolineTip { x y value } {
2291	set c $itk_component(view)
2292	.rappturetooltip configure -icon ""
2293
2294	# Compute the position of the tip
2295	set tx [expr $x + 15]
2296	set ty [expr $y - 5]
2297	Rappture::Tooltip::text $c "Isoline $value"
2298	Rappture::Tooltip::tooltip show $c +$tx,+$ty
2299	}
2300
2301
2302	#
2303	# EnterLegend --
2304	#
2305	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2306	SetLegendTip $x $y
2307	}
2308
2309	#
2310	# MotionLegend --
2311	#
2312	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2313	Rappture::Tooltip::tooltip cancel
2314	set c $itk_component(view)
2315	SetLegendTip $x $y
2316	}
2317
2318	#
2319	# LeaveLegend --
2320	#
2321	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2322	Rappture::Tooltip::tooltip cancel
2323	.rappturetooltip configure -icon ""
2324	}
2325
2326	#
2327	# SetLegendTip --
2328	#
2329	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2330	set c $itk_component(view)
2331	set w [winfo width $c]
2332	set h [winfo height $c]
2333	set font "Arial 8"
2334	set lineht [font metrics $font -linespace]
2335
2336	set ih [image height $_image(legend)]
2337	set iy [expr $y - ($lineht + 2)]
2338
2339	if { [info exists _fields($_title)] } {
2340	foreach { title units } $_fields($_title) break
2341	if { $units != "" } {
2342	set title [format "%s (%s)" $title $units]
2343	}
2344	} else {
2345	set title $_title
2346	}
2347	# If there's a legend title, increase the offset by the line height.
2348	if { $title != "" } {
2349	incr iy $lineht
2350	}
2351
2352	# Make a swatch of the selected color
2353	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2354	return
2355	}
2356
2357	if { ![info exists _image(swatch)] } {
2358	set _image(swatch) [image create photo -width 24 -height 24]
2359	}
2360	set color [eval format "\#%02x%02x%02x" $pixel]
2361	$_image(swatch) put black -to 0 0 23 23
2362	$_image(swatch) put $color -to 1 1 22 22
2363	.rappturetooltip configure -icon $_image(swatch)
2364
2365	# Compute the value of the point
2366	if { [info exists _limits(v)] } {
2367	foreach { vmin vmax } $_limits(v) break
2368	set t [expr 1.0 - (double($iy) / double($ih-1))]
2369	set value [expr $t * ($vmax - $vmin) + $vmin]
2370	} else {
2371	set value 0.0
2372	}
2373	set tipx [expr $x + 15]
2374	set tipy [expr $y - 5]
2375	Rappture::Tooltip::text $c "$title $value"
2376	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2377	}
2378
2379	# ----------------------------------------------------------------------
2380	# USAGE: _dropdown post
2381	# USAGE: _dropdown unpost
2382	# USAGE: _dropdown select
2383	#
2384	# Used internally to handle the dropdown list for this combobox. The
2385	# post/unpost options are invoked when the list is posted or unposted
2386	# to manage the relief of the controlling button. The select option
2387	# is invoked whenever there is a selection from the list, to assign
2388	# the value back to the gauge.
2389	# ----------------------------------------------------------------------
2390	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2391	set c $itk_component(view)
2392	switch -- $option {
2393	post {
2394	foreach { x1 y1 x2 y2 } [$c bbox title] break
2395	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2396	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2397	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2398	tk_popup $itk_component(fieldmenu) $x $y
2399	}
2400	activate {
2401	$c itemconfigure title -fill red
2402	}
2403	deactivate {
2404	$c itemconfigure title -fill $itk_option(-plotforeground)
2405	}
2406	invoke {
2407	$itk_component(field) value $_curFldLabel
2408	AdjustSetting field
2409	}
2410	default {
2411	error "bad option \"$option\": should be post, unpost, select"
2412	}
2413	}
2414	}
2415
2416	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2417	if { $_settings(isHeightmap) } {
2418	set val $_settings(heightmapScale)
2419	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2420	return $sval
2421	}
2422	set sval 0
2423	}
2424
2425	itcl::body Rappture::VtkHeightmapViewer::ResetColormap { color } {
2426	array set style {
2427	-color BCGYR
2428	-levels 10
2429	-opacity 1.0
2430	}
2431	if { [info exists _colormap($_currentColormap)] } {
2432	array set style $_colormap($_currentColormap)
2433	}
2434	set style(-color) $color
2435	SetCurrentColormap [array get style]
2436	}
2437

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