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source: trunk/gui/scripts/vtkheightmapviewer.tcl @ 4437

Last change on this file since 4437 was 4437, checked in by ldelgass, 10 years ago
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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkheightmapviewer - Vtk heightmap viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2014 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkHeightmapViewer.width 4i widgetDefault
19	option add VtkHeightmapViewercursor crosshair widgetDefault
20	option add *VtkHeightmapViewer.height 4i widgetDefault
21	option add *VtkHeightmapViewer.foreground black widgetDefault
22	option add *VtkHeightmapViewer.controlBackground gray widgetDefault
23	option add *VtkHeightmapViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkHeightmapViewer.plotBackground black widgetDefault
25	option add *VtkHeightmapViewer.plotForeground white widgetDefault
26	option add *VtkHeightmapViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkHeightmapViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkHeightmapViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkHeightmapViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40	itk_option define -mode mode Mode "contour"
41
42	constructor { hostlist args } {
43	Rappture::VisViewer::constructor $hostlist
44	} {
45	# defined below
46	}
47	destructor {
48	# defined below
49	}
50	public proc SetServerList { namelist } {
51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
52	}
53	public method add {dataobj {settings ""}}
54	public method camera {option args}
55	public method delete {args}
56	public method disconnect {}
57	public method download {option args}
58	public method get {args}
59	public method isconnected {}
60	public method limits3 { dataobj }
61	public method parameters {title args} {
62	# do nothing
63	}
64	public method scale {args}
65
66	protected method CameraReset {}
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 Zoom {option}
83
84	# The following methods are only used by this class.
85	private method BuildAxisTab {}
86	private method BuildCameraTab {}
87	private method BuildColormap { name }
88	private method BuildContourTab {}
89	private method BuildDownloadPopup { widget command }
90	private method Combo { option }
91	private method DrawLegend {}
92	private method EnterLegend { x y }
93	private method EventuallyRequestLegend {}
94	private method EventuallyResize { w h }
95	private method EventuallyRotate { q }
96	private method GetImage { args }
97	private method GetVtkData { args }
98	private method IsValidObject { dataobj }
99	private method LeaveLegend {}
100	private method MotionLegend { x y }
101	private method PanCamera {}
102	private method RequestLegend {}
103	private method SetCurrentColormap { color }
104	private method SetLegendTip { x y }
105	private method SetObjectStyle { dataobj comp }
106	private method GetHeightmapScale {}
107	private method ResetAxes {}
108	private method SetOrientation { side }
109	private method UpdateContourList {}
110
111	private variable _arcball ""
112	private variable _dlist "" ; # list of data objects
113	private variable _obj2datasets
114	private variable _obj2ovride ; # maps dataobj => style override
115	private variable _comp2scale; # maps dataset to the heightmap scale.
116	private variable _datasets ; # contains all the dataobj-component
117	; # datasets in the server
118	private variable _colormaps ; # contains all the colormaps
119	; # in the server.
120
121	# The name of the current colormap used. The colormap is global to all
122	# heightmaps displayed.
123	private variable _currentColormap ""
124	private variable _currentNumIsolines -1
125
126	private variable _maxScale 100; # This is the # of times the x-axis
127	# and y-axis ranges can differ before
128	# automatically turning on
129	# -stretchtofit
130
131	private variable _click ; # info used for rotate operations
132	private variable _limits ; # Holds overall limits for all dataobjs
133	# using the viewer.
134	private variable _view ; # view params for 3D view
135	private variable _settings
136	private variable _changed
137	private variable _initialStyle ""; # First found style in dataobjects.
138	private variable _reset 1; # Indicates if camera needs to be reset
139	# to starting position.
140	private variable _beforeConnect 1; # Indicates if camera needs to be reset
141	# to starting position.
142
143	private variable _first "" ; # This is the topmost dataset.
144	private variable _start 0
145	private variable _isolines
146	private variable _contourList ""
147
148	common _downloadPopup; # download options from popup
149	private common _hardcopy
150	private variable _width 0
151	private variable _height 0
152	private variable _legendWidth 0
153	private variable _legendHeight 0
154	private variable _resizePending 0
155	private variable _rotatePending 0
156	private variable _legendPending 0
157	private variable _fieldNames {}
158	private variable _fields
159	private variable _curFldName ""
160	private variable _curFldLabel ""
161	private variable _colorMode "scalar";# Mode of colormap (vmag or scalar)
162	}
163
164	itk::usual VtkHeightmapViewer {
165	keep -background -foreground -cursor -font
166	keep -plotbackground -plotforeground -mode
167	}
168
169	# ----------------------------------------------------------------------
170	# CONSTRUCTOR
171	# ----------------------------------------------------------------------
172	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
173	set _serverType "vtkvis"
174
175	EnableWaitDialog 900
176	# Rebuild event
177	$_dispatcher register !rebuild
178	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
179
180	# Resize event
181	$_dispatcher register !resize
182	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
183
184	# Rotate event
185	$_dispatcher register !rotate
186	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
187
188	# Legend event
189	$_dispatcher register !legend
190	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
191
192	#
193	# Populate parser with commands handle incoming requests
194	#
195	$_parser alias image [itcl::code $this ReceiveImage]
196	$_parser alias dataset [itcl::code $this ReceiveDataset]
197	$_parser alias legend [itcl::code $this ReceiveLegend]
198
199	# Create image for legend colorbar.
200	set _image(legend) [image create photo]
201
202	# Initialize the view to some default parameters.
203	array set _view {
204	qw 0.36
205	qx 0.25
206	qy 0.50
207	qz 0.70
208	zoom 1.0
209	xpan 0
210	ypan 0
211	ortho 0
212	}
213	set _arcball [blt::arcball create 100 100]
214	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
215	$_arcball quaternion $q
216
217	array set _settings {
218	-axisflymode "static"
219	-axislabels 1
220	-axisminorticks 1
221	-axisvisible 1
222	-colormap BCGYR
223	-colormapdiscrete 0
224	-colormapvisible 1
225	-edges 0
226	-field "Default"
227	-heightmapscale 50
228	-isheightmap 0
229	-isolinecolor black
230	-isolinesvisible 1
231	-legendvisible 1
232	-lighting 1
233	-numisolines 10
234	-opacity 100
235	-outline 0
236	-savelighting 1
237	-saveopacity 100
238	-saveoutline 0
239	-stretchtofit 0
240	-wireframe 0
241	-xgrid 0
242	-ygrid 0
243	-zgrid 0
244	}
245	array set _changed {
246	-colormap 0
247	-numisolines 0
248	-opacity 0
249	}
250	itk_component add view {
251	canvas $itk_component(plotarea).view \
252	-highlightthickness 0 -borderwidth 0
253	} {
254	usual
255	ignore -highlightthickness -borderwidth -background
256	}
257
258	itk_component add fieldmenu {
259	menu $itk_component(plotarea).menu \
260	-relief flat \
261	-tearoff no
262	} {
263	usual
264	ignore -background -foreground -relief -tearoff
265	}
266	set c $itk_component(view)
267	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
268	bind $c <4> [itcl::code $this Zoom in 0.25]
269	bind $c <5> [itcl::code $this Zoom out 0.25]
270	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
271	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
272	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
273	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
274	bind $c <Enter> "focus %W"
275	bind $c <Control-F1> [itcl::code $this ToggleConsole]
276
277	# Fix the scrollregion in case we go off screen
278	$c configure -scrollregion [$c bbox all]
279
280	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
281	set _map(cwidth) -1
282	set _map(cheight) -1
283	set _map(zoom) 1.0
284	set _map(original) ""
285
286	set f [$itk_component(main) component controls]
287	itk_component add reset {
288	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
289	-highlightthickness 0 \
290	-image [Rappture::icon reset-view] \
291	-command [itcl::code $this CameraReset]
292	} {
293	usual
294	ignore -highlightthickness
295	}
296	pack $itk_component(reset) -side top -padx 2 -pady { 2 0 }
297	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
298
299	itk_component add zoomin {
300	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
301	-highlightthickness 0 \
302	-image [Rappture::icon zoom-in] \
303	-command [itcl::code $this Zoom in]
304	} {
305	usual
306	ignore -highlightthickness
307	}
308	pack $itk_component(zoomin) -side top -padx 2 -pady { 2 0 }
309	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
310
311	itk_component add zoomout {
312	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
313	-highlightthickness 0 \
314	-image [Rappture::icon zoom-out] \
315	-command [itcl::code $this Zoom out]
316	} {
317	usual
318	ignore -highlightthickness
319	}
320	pack $itk_component(zoomout) -side top -padx 2 -pady { 2 0 }
321	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
322
323	itk_component add mode {
324	Rappture::PushButton $f.mode \
325	-onimage [Rappture::icon surface] \
326	-offimage [Rappture::icon surface] \
327	-variable [itcl::scope _settings(-isheightmap)] \
328	-command [itcl::code $this AdjustSetting -isheightmap] \
329	}
330	Rappture::Tooltip::for $itk_component(mode) \
331	"Toggle the surface/contour on/off"
332	pack $itk_component(mode) -padx 2 -pady { 2 0 }
333
334	itk_component add stretchtofit {
335	Rappture::PushButton $f.stretchtofit \
336	-onimage [Rappture::icon stretchtofit] \
337	-offimage [Rappture::icon stretchtofit] \
338	-variable [itcl::scope _settings(-stretchtofit)] \
339	-command [itcl::code $this AdjustSetting -stretchtofit] \
340	}
341	Rappture::Tooltip::for $itk_component(stretchtofit) \
342	"Stretch plot to fit window on/off"
343	pack $itk_component(stretchtofit) -padx 2 -pady 2
344
345	if { [catch {
346	BuildContourTab
347	BuildAxisTab
348	BuildCameraTab
349	} errs] != 0 } {
350	global errorInfo
351	puts stderr "errs=$errs errorInfo=$errorInfo"
352	}
353
354	# Hack around the Tk panewindow. The problem is that the requested
355	# size of the 3d view isn't set until an image is retrieved from
356	# the server. So the panewindow uses the tiny size.
357	set w 10000
358	pack forget $itk_component(view)
359	blt::table $itk_component(plotarea) \
360	0,0 $itk_component(view) -fill both -reqwidth $w
361	blt::table configure $itk_component(plotarea) c1 -resize none
362
363	# Bindings for panning via mouse
364	bind $itk_component(view) <ButtonPress-2> \
365	[itcl::code $this Pan click %x %y]
366	bind $itk_component(view) <B2-Motion> \
367	[itcl::code $this Pan drag %x %y]
368	bind $itk_component(view) <ButtonRelease-2> \
369	[itcl::code $this Pan release %x %y]
370
371	#bind $itk_component(view) <ButtonRelease-3> \
372	# [itcl::code $this Pick %x %y]
373
374	# Bindings for panning via keyboard
375	bind $itk_component(view) <KeyPress-Left> \
376	[itcl::code $this Pan set -10 0]
377	bind $itk_component(view) <KeyPress-Right> \
378	[itcl::code $this Pan set 10 0]
379	bind $itk_component(view) <KeyPress-Up> \
380	[itcl::code $this Pan set 0 -10]
381	bind $itk_component(view) <KeyPress-Down> \
382	[itcl::code $this Pan set 0 10]
383	bind $itk_component(view) <Shift-KeyPress-Left> \
384	[itcl::code $this Pan set -2 0]
385	bind $itk_component(view) <Shift-KeyPress-Right> \
386	[itcl::code $this Pan set 2 0]
387	bind $itk_component(view) <Shift-KeyPress-Up> \
388	[itcl::code $this Pan set 0 -2]
389	bind $itk_component(view) <Shift-KeyPress-Down> \
390	[itcl::code $this Pan set 0 2]
391
392	# Bindings for zoom via keyboard
393	bind $itk_component(view) <KeyPress-Prior> \
394	[itcl::code $this Zoom out]
395	bind $itk_component(view) <KeyPress-Next> \
396	[itcl::code $this Zoom in]
397
398	bind $itk_component(view) <Enter> "focus $itk_component(view)"
399
400	if {[string equal "x11" [tk windowingsystem]]} {
401	# Bindings for zoom via mouse
402	bind $itk_component(view) <4> [itcl::code $this Zoom out]
403	bind $itk_component(view) <5> [itcl::code $this Zoom in]
404	}
405
406	set _image(download) [image create photo]
407	eval itk_initialize $args
408	Connect
409	set _beforeConnect 0
410	}
411
412	# ----------------------------------------------------------------------
413	# DESTRUCTOR
414	# ----------------------------------------------------------------------
415	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
416	Disconnect
417	image delete $_image(plot)
418	image delete $_image(download)
419	catch { blt::arcball destroy $_arcball }
420	}
421
422	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
423	if { $_width < 2 } {
424	set _width 500
425	}
426	if { $_height < 2 } {
427	set _height 500
428	}
429	set _start [clock clicks -milliseconds]
430	SendCmd "screen size [expr $_width - 20] $_height"
431
432	set font "Arial 8"
433	set lh [font metrics $font -linespace]
434	set h [expr {$_height - 2 * ($lh + 2)}]
435	if { $h != $_legendHeight } {
436	EventuallyRequestLegend
437	} else {
438	DrawLegend
439	}
440	set _resizePending 0
441	}
442
443	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
444	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
445	SendCmd "camera orient $q"
446	set _rotatePending 0
447	}
448
449	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
450	if { !$_legendPending } {
451	set _legendPending 1
452	$_dispatcher event -idle !legend
453	}
454	}
455
456	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
457	set _width $w
458	set _height $h
459	$_arcball resize $w $h
460	if { !$_resizePending } {
461	set _resizePending 1
462	$_dispatcher event -after 250 !resize
463	}
464	}
465
466	set rotate_delay 100
467
468	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
469	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
470	if { !$_rotatePending } {
471	set _rotatePending 1
472	global rotate_delay
473	$_dispatcher event -after $rotate_delay !rotate
474	}
475	}
476
477	# ----------------------------------------------------------------------
478	# USAGE: add <dataobj> ?<settings>?
479	#
480	# Clients use this to add a data object to the plot. The optional
481	# <settings> are used to configure the plot. Allowed settings are
482	# -color, -brightness, -width, -linestyle, and -raise.
483	# ----------------------------------------------------------------------
484	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
485	if { ![$dataobj isvalid] } {
486	return; # Object doesn't contain valid data.
487	}
488	array set params {
489	-color auto
490	-width 1
491	-linestyle solid
492	-brightness 0
493	-raise 0
494	-description ""
495	-param ""
496	-type ""
497	}
498	array set params $settings
499	set params(-description) ""
500	set params(-param) ""
501	array set params $settings
502
503	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
504	# can't handle -autocolors yet
505	set params(-color) white
506	}
507	set pos [lsearch -exact $_dlist $dataobj]
508	if {$pos < 0} {
509	lappend _dlist $dataobj
510	}
511	set _obj2ovride($dataobj-color) $params(-color)
512	set _obj2ovride($dataobj-width) $params(-width)
513	set _obj2ovride($dataobj-raise) $params(-raise)
514	$_dispatcher event -idle !rebuild
515	}
516
517
518	# ----------------------------------------------------------------------
519	# USAGE: delete ?<dataobj1> <dataobj2> ...?
520	#
521	# Clients use this to delete a dataobj from the plot. If no dataobjs
522	# are specified, then all dataobjs are deleted. No data objects are
523	# deleted. They are only removed from the display list.
524	#
525	# ----------------------------------------------------------------------
526	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
527	if { [llength $args] == 0} {
528	set args $_dlist
529	}
530	# Delete all specified dataobjs
531	set changed 0
532	foreach dataobj $args {
533	set pos [lsearch -exact $_dlist $dataobj]
534	if { $pos < 0 } {
535	continue; # Don't know anything about it.
536	}
537	# Remove it from the dataobj list.
538	set _dlist [lreplace $_dlist $pos $pos]
539	array unset _obj2ovride $dataobj-*
540	array unset _settings $dataobj-*
541	set changed 1
542	}
543	# If anything changed, then rebuild the plot
544	if { $changed } {
545	$_dispatcher event -idle !rebuild
546	}
547	}
548
549	# ----------------------------------------------------------------------
550	# USAGE: get ?-objects?
551	# USAGE: get ?-visible?
552	# USAGE: get ?-image view?
553	#
554	# Clients use this to query the list of objects being plotted, in
555	# order from bottom to top of this result. The optional "-image"
556	# flag can also request the internal images being shown.
557	# ----------------------------------------------------------------------
558	itcl::body Rappture::VtkHeightmapViewer::get {args} {
559	if {[llength $args] == 0} {
560	set args "-objects"
561	}
562	set op [lindex $args 0]
563	switch -- $op {
564	"-objects" {
565	# put the dataobj list in order according to -raise options
566	set dlist {}
567	foreach dataobj $_dlist {
568	if { ![IsValidObject $dataobj] } {
569	continue
570	}
571	if {[info exists _obj2ovride($dataobj-raise)] &&
572	$_obj2ovride($dataobj-raise)} {
573	set dlist [linsert $dlist 0 $dataobj]
574	} else {
575	lappend dlist $dataobj
576	}
577	}
578	return $dlist
579	}
580	"-visible" {
581	set dlist {}
582	foreach dataobj $_dlist {
583	if { ![IsValidObject $dataobj] } {
584	continue
585	}
586	if { ![info exists _obj2ovride($dataobj-raise)] } {
587	# No setting indicates that the object isn't visible.
588	continue
589	}
590	# Otherwise use the -raise parameter to put the object to
591	# the front of the list.
592	if { $_obj2ovride($dataobj-raise) } {
593	set dlist [linsert $dlist 0 $dataobj]
594	} else {
595	lappend dlist $dataobj
596	}
597	}
598	return $dlist
599	}
600	-image {
601	if {[llength $args] != 2} {
602	error "wrong # args: should be \"get -image view\""
603	}
604	switch -- [lindex $args end] {
605	view {
606	return $_image(plot)
607	}
608	default {
609	error "bad image name \"[lindex $args end]\": should be view"
610	}
611	}
612	}
613	default {
614	error "bad option \"$op\": should be -objects or -image"
615	}
616	}
617	}
618
619	#
620	# scale --
621	#
622	# This gets called either incrementally as new simulations are
623	# added or all at once as a sequence of heightmaps.
624	# This accounts for all objects--even those not showing on the
625	# screen. Because of this, the limits are appropriate for all
626	# objects as the user scans through data in the ResultSet viewer.
627	#
628	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
629	foreach dataobj $args {
630	if { ![$dataobj isvalid] } {
631	continue; # Object doesn't contain valid data.
632	}
633	foreach axis { x y } {
634	set lim [$dataobj limits $axis]
635	if { ![info exists _limits($axis)] } {
636	set _limits($axis) $lim
637	continue
638	}
639	foreach {min max} $lim break
640	foreach {amin amax} $_limits($axis) break
641	if { $amin > $min } {
642	set amin $min
643	}
644	if { $amax < $max } {
645	set amax $max
646	}
647	set _limits($axis) [list $amin $amax]
648	set units [$dataobj hints ${axis}units]
649	set found($units) 1
650	}
651	foreach { fname lim } [$dataobj fieldlimits] {
652	if { ![info exists _limits($fname)] } {
653	set _limits($fname) $lim
654	continue
655	}
656	foreach {min max} $lim break
657	foreach {fmin fmax} $_limits($fname) break
658	if { $fmin > $min } {
659	set fmin $min
660	}
661	if { $fmax < $max } {
662	set fmax $max
663	}
664	set _limits($fname) [list $fmin $fmax]
665	}
666	}
667	if { [array size found] > 1 } {
668	set _settings(-stretchtofit) 1
669	} else {
670	# Check if the range of the x and y axes requires that we stretch
671	# the contour to fit the plotting area. This can happen when the
672	# x and y scales differ greatly (> 100x)
673	foreach {xmin xmax} $_limits(x) break
674	foreach {ymin ymax} $_limits(y) break
675	if { (($xmax - $xmin) > (($ymax -$ymin) * $_maxScale)) \|\|
676	((($xmax - $xmin) * $_maxScale) < ($ymax -$ymin)) } {
677	set _settings(-stretchtofit) 1
678	}
679	}
680	}
681
682	# ----------------------------------------------------------------------
683	# USAGE: download coming
684	# USAGE: download controls <downloadCommand>
685	# USAGE: download now
686	#
687	# Clients use this method to create a downloadable representation
688	# of the plot. Returns a list of the form {ext string}, where
689	# "ext" is the file extension (indicating the type of data) and
690	# "string" is the data itself.
691	# ----------------------------------------------------------------------
692	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
693	switch $option {
694	coming {
695	if {[catch {
696	blt::winop snap $itk_component(plotarea) $_image(download)
697	}]} {
698	$_image(download) configure -width 1 -height 1
699	$_image(download) put #000000
700	}
701	}
702	controls {
703	set popup .vtkviewerdownload
704	if { ![winfo exists .vtkviewerdownload] } {
705	set inner [BuildDownloadPopup $popup [lindex $args 0]]
706	} else {
707	set inner [$popup component inner]
708	}
709	set _downloadPopup(image_controls) $inner.image_frame
710	set num [llength [get]]
711	set num [expr {($num == 1) ? "1 result" : "$num results"}]
712	set word [Rappture::filexfer::label downloadWord]
713	$inner.summary configure -text "$word $num in the following format:"
714	update idletasks ;# Fix initial sizes
715	return $popup
716	}
717	now {
718	set popup .vtkviewerdownload
719	if {[winfo exists .vtkviewerdownload]} {
720	$popup deactivate
721	}
722	switch -- $_downloadPopup(format) {
723	"image" {
724	return [$this GetImage [lindex $args 0]]
725	}
726	"vtk" {
727	return [$this GetVtkData [lindex $args 0]]
728	}
729	}
730	return ""
731	}
732	default {
733	error "bad option \"$option\": should be coming, controls, now"
734	}
735	}
736	}
737
738	# ----------------------------------------------------------------------
739	# USAGE: Connect ?<host:port>,<host:port>...?
740	#
741	# Clients use this method to establish a connection to a new
742	# server, or to reestablish a connection to the previous server.
743	# Any existing connection is automatically closed.
744	# ----------------------------------------------------------------------
745	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
746	global readyForNextFrame
747	set readyForNextFrame 1
748	set _reset 1
749	set _hosts [GetServerList "vtkvis"]
750	if { "" == $_hosts } {
751	return 0
752	}
753	set result [VisViewer::Connect $_hosts]
754	if { $result } {
755	if { $_reportClientInfo } {
756	# Tell the server the viewer, hub, user and session.
757	# Do this immediately on connect before buffering any commands
758	global env
759
760	set info {}
761	set user "???"
762	if { [info exists env(USER)] } {
763	set user $env(USER)
764	}
765	set session "???"
766	if { [info exists env(SESSION)] } {
767	set session $env(SESSION)
768	}
769	lappend info "hub" [exec hostname]
770	lappend info "client" "vtkheightmapviewer"
771	lappend info "user" $user
772	lappend info "session" $session
773	SendCmd "clientinfo [list $info]"
774	}
775	set w [winfo width $itk_component(view)]
776	set h [winfo height $itk_component(view)]
777	EventuallyResize $w $h
778	}
779	return $result
780	}
781
782	#
783	# isconnected --
784	#
785	# Indicates if we are currently connected to the visualization server.
786	#
787	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
788	return [VisViewer::IsConnected]
789	}
790
791	#
792	# disconnect --
793	#
794	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
795	Disconnect
796	set _reset 1
797	}
798
799	#
800	# Disconnect --
801	#
802	# Clients use this method to disconnect from the current rendering
803	# server.
804	#
805	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
806	VisViewer::Disconnect
807
808	$_dispatcher cancel !rebuild
809	$_dispatcher cancel !resize
810	$_dispatcher cancel !rotate
811	$_dispatcher cancel !legend
812	# disconnected -- no more data sitting on server
813	array unset _datasets
814	array unset _data
815	array unset _colormaps
816	array unset _obj2datasets
817	global readyForNextFrame
818	set readyForNextFrame 1
819	}
820
821	# ----------------------------------------------------------------------
822	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
823	#
824	# Invoked automatically whenever the "image" command comes in from
825	# the rendering server. Indicates that binary image data with the
826	# specified <size> will follow.
827	# ----------------------------------------------------------------------
828	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
829	global readyForNextFrame
830	set readyForNextFrame 1
831	array set info {
832	-token "???"
833	-bytes 0
834	-type image
835	}
836	array set info $args
837	set bytes [ReceiveBytes $info(-bytes)]
838	if { $info(-type) == "image" } {
839	if 0 {
840	set f [open "last.ppm" "w"]
841	puts $f $bytes
842	close $f
843	}
844	$_image(plot) configure -data $bytes
845	set time [clock seconds]
846	set date [clock format $time]
847	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
848	if { $_start > 0 } {
849	set finish [clock clicks -milliseconds]
850	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
851	set _start 0
852	}
853	} elseif { $info(type) == "print" } {
854	set tag $this-print-$info(-token)
855	set _hardcopy($tag) $bytes
856	}
857	}
858
859	#
860	# ReceiveDataset --
861	#
862	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
863	if { ![isconnected] } {
864	return
865	}
866	set option [lindex $args 0]
867	switch -- $option {
868	"scalar" {
869	set option [lindex $args 1]
870	switch -- $option {
871	"world" {
872	foreach { x y z value tag } [lrange $args 2 end] break
873	}
874	"pixel" {
875	foreach { x y value tag } [lrange $args 2 end] break
876	}
877	}
878	}
879	"vector" {
880	set option [lindex $args 1]
881	switch -- $option {
882	"world" {
883	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
884	}
885	"pixel" {
886	foreach { x y vx vy vz tag } [lrange $args 2 end] break
887	}
888	}
889	}
890	"names" {
891	foreach { name } [lindex $args 1] {
892	#puts stderr "Dataset: $name"
893	}
894	}
895	default {
896	error "unknown dataset option \"$option\" from server"
897	}
898	}
899	}
900
901	# ----------------------------------------------------------------------
902	# USAGE: Rebuild
903	#
904	# Called automatically whenever something changes that affects the
905	# data in the widget. Clears any existing data and rebuilds the
906	# widget to display new data.
907	# ----------------------------------------------------------------------
908	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
909	set w [winfo width $itk_component(view)]
910	set h [winfo height $itk_component(view)]
911	if { $w < 2 \|\| $h < 2 } {
912	$_dispatcher event -idle !rebuild
913	return
914	}
915
916	# Turn on buffering of commands to the server. We don't want to
917	# be preempted by a server disconnect/reconnect (which automatically
918	# generates a new call to Rebuild).
919	StartBufferingCommands
920
921	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
922	set _width $w
923	set _height $h
924	$_arcball resize $w $h
925	DoResize
926	if { $_settings(-stretchtofit) } {
927	AdjustSetting -stretchtofit
928	}
929	}
930	if { $_reset } {
931	#
932	# Reset the camera and other view parameters
933	#
934	InitSettings -isheightmap -background
935
936	# Let's see how this goes. I think it's preferable to overloading the
937	# axis title with the exponent.
938	SendCmd "axis exp 0 0 0 1"
939
940	SendCmd "axis lrot z 90"
941	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
942	$_arcball quaternion $q
943	if {$_settings(-isheightmap) } {
944	if { $_view(ortho)} {
945	SendCmd "camera mode ortho"
946	} else {
947	SendCmd "camera mode persp"
948	}
949	DoRotate
950	SendCmd "camera reset"
951	}
952	PanCamera
953	StopBufferingCommands
954	SendCmd "imgflush"
955	StartBufferingCommands
956	}
957
958	set _first ""
959	# Start off with no datasets are visible.
960	SendCmd "dataset visible 0"
961	set scale [GetHeightmapScale]
962	foreach dataobj [get -objects] {
963	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
964	set _first $dataobj
965	}
966	set _obj2datasets($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 0 {
972	set f [open /tmp/vtkheightmap.vtk "w"]
973	puts $f $bytes
974	close $f
975	}
976	set length [string length $bytes]
977	if { $_reportClientInfo } {
978	set info {}
979	lappend info "tool_id" [$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	SendCmd "dataset add $tag data follows $length"
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	# Setting dataset visible enables outline
996	# and heightmap
997	SendCmd "dataset visible 1 $tag"
998	}
999	if { ![info exists _comp2scale($tag)] \|\|
1000	$_comp2scale($tag) != $scale } {
1001	SendCmd "heightmap heightscale $scale $tag"
1002	set _comp2scale($tag) $scale
1003	}
1004	}
1005	}
1006	if { $_first != "" } {
1007	$itk_component(field) choices delete 0 end
1008	$itk_component(fieldmenu) delete 0 end
1009	array unset _fields
1010	set _curFldName ""
1011	foreach cname [$_first components] {
1012	foreach fname [$_first fieldnames $cname] {
1013	if { [info exists _fields($fname)] } {
1014	continue
1015	}
1016	foreach { label units components } \
1017	[$_first fieldinfo $fname] break
1018	$itk_component(field) choices insert end "$fname" "$label"
1019	$itk_component(fieldmenu) add radiobutton -label "$label" \
1020	-value $label -variable [itcl::scope _curFldLabel] \
1021	-selectcolor red \
1022	-activebackground $itk_option(-plotbackground) \
1023	-activeforeground $itk_option(-plotforeground) \
1024	-font "Arial 8" \
1025	-command [itcl::code $this Combo invoke]
1026	set _fields($fname) [list $label $units $components]
1027	if { $_curFldName == "" } {
1028	set _curFldName $fname
1029	set _curFldLabel $label
1030	}
1031	}
1032	}
1033	$itk_component(field) value $_curFldLabel
1034	}
1035	InitSettings -stretchtofit -outline
1036
1037	if { $_reset } {
1038	SendCmd "axis tickpos outside"
1039	foreach axis { x y z } {
1040	SendCmd "axis lformat $axis %g"
1041	}
1042
1043	foreach axis { x y z } {
1044	if { $axis == "z" } {
1045	set label [$_first hints label]
1046	} else {
1047	set label [$_first hints ${axis}label]
1048	}
1049	if { $label == "" } {
1050	if {$axis == "z"} {
1051	if { [string match "component*" $_curFldName] } {
1052	set label [string toupper $axis]
1053	} else {
1054	set label $_curFldLabel
1055	}
1056	} else {
1057	set label [string toupper $axis]
1058	}
1059	}
1060	# May be a space in the axis label.
1061	SendCmd [list axis name $axis $label]
1062
1063	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1064	set units [lindex $_fields($_curFldName) 1]
1065	} else {
1066	set units [$_first hints ${axis}units]
1067	}
1068	if { $units != "" } {
1069	# May be a space in the axis units.
1070	SendCmd [list axis units $axis $units]
1071	}
1072	}
1073	#
1074	# Reset the camera and other view parameters
1075	#
1076	ResetAxes
1077	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1078	$_arcball quaternion $q
1079	if {$_settings(-isheightmap) } {
1080	if { $_view(ortho)} {
1081	SendCmd "camera mode ortho"
1082	} else {
1083	SendCmd "camera mode persp"
1084	}
1085	DoRotate
1086	SendCmd "camera reset"
1087	}
1088	PanCamera
1089	InitSettings -xgrid -ygrid -zgrid \
1090	-axisvisible -axislabels -heightmapscale -field -isheightmap \
1091	-numisolines
1092	if { [array size _fields] < 2 } {
1093	blt::table forget $itk_component(field) $itk_component(field_l)
1094	}
1095	RequestLegend
1096	set _reset 0
1097	}
1098	global readyForNextFrame
1099	set readyForNextFrame 0; # Don't advance to the next frame
1100
1101	# Actually write the commands to the server socket. If it fails, we don't
1102	# care. We're finished here.
1103	blt::busy hold $itk_component(hull)
1104	StopBufferingCommands
1105	blt::busy release $itk_component(hull)
1106	}
1107
1108	# ----------------------------------------------------------------------
1109	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1110	#
1111	# Returns a list of server IDs for the current datasets being displayed. This
1112	# is normally a single ID, but it might be a list of IDs if the current data
1113	# object has multiple components.
1114	# ----------------------------------------------------------------------
1115	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1116	set flag [lindex $args 0]
1117	switch -- $flag {
1118	"-all" {
1119	if { [llength $args] > 1 } {
1120	error "CurrentDatasets: can't specify dataobj after \"-all\""
1121	}
1122	set dlist [get -objects]
1123	}
1124	"-visible" {
1125	if { [llength $args] > 1 } {
1126	set dlist {}
1127	set args [lrange $args 1 end]
1128	foreach dataobj $args {
1129	if { [info exists _obj2ovride($dataobj-raise)] } {
1130	lappend dlist $dataobj
1131	}
1132	}
1133	} else {
1134	set dlist [get -visible]
1135	}
1136	}
1137	default {
1138	set dlist $args
1139	}
1140	}
1141	set rlist ""
1142	foreach dataobj $dlist {
1143	foreach comp [$dataobj components] {
1144	set tag $dataobj-$comp
1145	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1146	lappend rlist $tag
1147	}
1148	}
1149	}
1150	return $rlist
1151	}
1152
1153	itcl::body Rappture::VtkHeightmapViewer::CameraReset {} {
1154	array set _view {
1155	qw 0.36
1156	qx 0.25
1157	qy 0.50
1158	qz 0.70
1159	zoom 1.0
1160	xpan 0
1161	ypan 0
1162	}
1163	if { $_first != "" } {
1164	set location [$_first hints camera]
1165	if { $location != "" } {
1166	array set _view $location
1167	}
1168	}
1169	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1170	$_arcball quaternion $q
1171	if {$_settings(-isheightmap) } {
1172	DoRotate
1173	}
1174	SendCmd "camera reset"
1175	}
1176
1177	# ----------------------------------------------------------------------
1178	# USAGE: Zoom in
1179	# USAGE: Zoom out
1180	# USAGE: Zoom reset
1181	#
1182	# Called automatically when the user clicks on one of the zoom
1183	# controls for this widget. Changes the zoom for the current view.
1184	# ----------------------------------------------------------------------
1185	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1186	switch -- $option {
1187	"in" {
1188	set _view(zoom) [expr {$_view(zoom)*1.25}]
1189	SendCmd "camera zoom $_view(zoom)"
1190	}
1191	"out" {
1192	set _view(zoom) [expr {$_view(zoom)*0.8}]
1193	SendCmd "camera zoom $_view(zoom)"
1194	}
1195	"reset" {
1196	array set _view {
1197	zoom 1.0
1198	xpan 0
1199	ypan 0
1200	}
1201	SendCmd "camera reset"
1202	}
1203	}
1204	}
1205
1206	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1207	set x $_view(xpan)
1208	set y $_view(ypan)
1209	SendCmd "camera pan $x $y"
1210	}
1211
1212
1213	# ----------------------------------------------------------------------
1214	# USAGE: Rotate click <x> <y>
1215	# USAGE: Rotate drag <x> <y>
1216	# USAGE: Rotate release <x> <y>
1217	#
1218	# Called automatically when the user clicks/drags/releases in the
1219	# plot area. Moves the plot according to the user's actions.
1220	# ----------------------------------------------------------------------
1221	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1222	switch -- $option {
1223	"click" {
1224	$itk_component(view) configure -cursor fleur
1225	set _click(x) $x
1226	set _click(y) $y
1227	}
1228	"drag" {
1229	if {[array size _click] == 0} {
1230	Rotate click $x $y
1231	} else {
1232	set w [winfo width $itk_component(view)]
1233	set h [winfo height $itk_component(view)]
1234	if {$w <= 0 \|\| $h <= 0} {
1235	return
1236	}
1237
1238	if {[catch {
1239	# this fails sometimes for no apparent reason
1240	set dx [expr {double($x-$_click(x))/$w}]
1241	set dy [expr {double($y-$_click(y))/$h}]
1242	}]} {
1243	return
1244	}
1245	if { $dx == 0 && $dy == 0 } {
1246	return
1247	}
1248	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1249	EventuallyRotate $q
1250	set _click(x) $x
1251	set _click(y) $y
1252	}
1253	}
1254	"release" {
1255	Rotate drag $x $y
1256	$itk_component(view) configure -cursor ""
1257	catch {unset _click}
1258	}
1259	default {
1260	error "bad option \"$option\": should be click, drag, release"
1261	}
1262	}
1263	}
1264
1265	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1266	foreach tag [CurrentDatasets -visible] {
1267	SendCmd "dataset getscalar pixel $x $y $tag"
1268	}
1269	}
1270
1271	# ----------------------------------------------------------------------
1272	# USAGE: $this Pan click x y
1273	# $this Pan drag x y
1274	# $this Pan release x y
1275	#
1276	# Called automatically when the user clicks on one of the zoom
1277	# controls for this widget. Changes the zoom for the current view.
1278	# ----------------------------------------------------------------------
1279	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1280	switch -- $option {
1281	"set" {
1282	set w [winfo width $itk_component(view)]
1283	set h [winfo height $itk_component(view)]
1284	set x [expr $x / double($w)]
1285	set y [expr $y / double($h)]
1286	set _view(xpan) [expr $_view(xpan) + $x]
1287	set _view(ypan) [expr $_view(ypan) + $y]
1288	PanCamera
1289	return
1290	}
1291	"click" {
1292	set _click(x) $x
1293	set _click(y) $y
1294	$itk_component(view) configure -cursor hand1
1295	}
1296	"drag" {
1297	if { ![info exists _click(x)] } {
1298	set _click(x) $x
1299	}
1300	if { ![info exists _click(y)] } {
1301	set _click(y) $y
1302	}
1303	set w [winfo width $itk_component(view)]
1304	set h [winfo height $itk_component(view)]
1305	set dx [expr ($_click(x) - $x)/double($w)]
1306	set dy [expr ($_click(y) - $y)/double($h)]
1307	set _click(x) $x
1308	set _click(y) $y
1309	set _view(xpan) [expr $_view(xpan) - $dx]
1310	set _view(ypan) [expr $_view(ypan) - $dy]
1311	PanCamera
1312	}
1313	"release" {
1314	Pan drag $x $y
1315	$itk_component(view) configure -cursor ""
1316	}
1317	default {
1318	error "unknown option \"$option\": should set, click, drag, or release"
1319	}
1320	}
1321	}
1322
1323	# ----------------------------------------------------------------------
1324	# USAGE: InitSettings <what> ?<value>?
1325	#
1326	# Used internally to update rendering settings whenever parameters
1327	# change in the popup settings panel. Sends the new settings off
1328	# to the back end.
1329	# ----------------------------------------------------------------------
1330	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1331	foreach spec $args {
1332	if { [info exists _settings($_first${spec})] } {
1333	# Reset global setting with dataobj specific setting
1334	set _settings($spec) $_settings($_first${spec})
1335	}
1336	AdjustSetting $spec
1337	}
1338	}
1339
1340	#
1341	# AdjustSetting --
1342	#
1343	# Changes/updates a specific setting in the widget. There are
1344	# usually user-setable option. Commands are sent to the render
1345	# server.
1346	#
1347	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1348	if { $_beforeConnect } {
1349	return
1350	}
1351	switch -- $what {
1352	"-axisflymode" {
1353	set mode [$itk_component(axisflymode) value]
1354	set mode [$itk_component(axisflymode) translate $mode]
1355	set _settings($what) $mode
1356	SendCmd "axis flymode $mode"
1357	}
1358	"-axislabels" {
1359	set bool $_settings($what)
1360	SendCmd "axis labels all $bool"
1361	}
1362	"-axisminorticks" {
1363	set bool $_settings($what)
1364	foreach axis { x y z } {
1365	SendCmd "axis minticks ${axis} $bool"
1366	}
1367	}
1368	"-axisvisible" {
1369	set bool $_settings($what)
1370	SendCmd "axis visible all $bool"
1371	}
1372	"-xgrid" - "-ygrid" - "-zgrid" {
1373	set axis [string tolower [string range $what 1 1]]
1374	set bool $_settings($what)
1375	SendCmd "axis grid $axis $bool"
1376	}
1377	"-background" {
1378	set bg [$itk_component(background) value]
1379	array set fgcolors {
1380	"black" "white"
1381	"white" "black"
1382	"grey" "black"
1383	}
1384	set fg $fgcolors($bg)
1385	configure -plotbackground $bg -plotforeground $fg
1386	$itk_component(view) delete "legend"
1387	SendCmd "screen bgcolor [Color2RGB $bg]"
1388	SendCmd "outline color [Color2RGB $fg]"
1389	SendCmd "axis color all [Color2RGB $fg]"
1390	DrawLegend
1391	}
1392	"-colormap" {
1393	set _changed($what) 1
1394	StartBufferingCommands
1395	set color [$itk_component(colormap) value]
1396	set _settings($what) $color
1397	if { $color == "none" } {
1398	if { $_settings(-colormapvisible) } {
1399	SendCmd "heightmap surface 0"
1400	set _settings(-colormapvisible) 0
1401	}
1402	} else {
1403	if { !$_settings(-colormapvisible) } {
1404	SendCmd "heightmap surface 1"
1405	set _settings(-colormapvisible) 1
1406	}
1407	SetCurrentColormap $color
1408	if {$_settings(-colormapdiscrete)} {
1409	set numColors [expr $_settings(-numisolines) + 1]
1410	SendCmd "colormap res $numColors $color"
1411	}
1412	}
1413	StopBufferingCommands
1414	EventuallyRequestLegend
1415	}
1416	"-colormapvisible" {
1417	set bool $_settings($what)
1418	SendCmd "heightmap surface $bool"
1419	}
1420	"-colormapdiscrete" {
1421	set bool $_settings($what)
1422	set numColors [expr $_settings(-numisolines) + 1]
1423	StartBufferingCommands
1424	if {$bool} {
1425	SendCmd "colormap res $numColors"
1426	# Discrete colormap requires preinterp on
1427	SendCmd "heightmap preinterp on"
1428	} else {
1429	SendCmd "colormap res default"
1430	# FIXME: add setting for preinterp (default on)
1431	SendCmd "heightmap preinterp on"
1432	}
1433	StopBufferingCommands
1434	EventuallyRequestLegend
1435	}
1436	"-edges" {
1437	set bool $_settings($what)
1438	SendCmd "heightmap edges $bool"
1439	}
1440	"-field" {
1441	set label [$itk_component(field) value]
1442	set fname [$itk_component(field) translate $label]
1443	set _settings($what) $fname
1444	if { [info exists _fields($fname)] } {
1445	foreach { label units components } $_fields($fname) break
1446	if { $components > 1 } {
1447	set _colorMode vmag
1448	} else {
1449	set _colorMode scalar
1450	}
1451	set _curFldName $fname
1452	set _curFldLabel $label
1453	} else {
1454	puts stderr "unknown field \"$fname\""
1455	return
1456	}
1457	set label [$_first hints label]
1458	if { $label == "" } {
1459	if { [string match "component*" $_curFldName] } {
1460	set label Z
1461	} else {
1462	set label $_curFldLabel
1463	}
1464	}
1465	# May be a space in the axis label.
1466	SendCmd [list axis name z $label]
1467
1468	if { [$_first hints zunits] == "" } {
1469	set units [lindex $_fields($_curFldName) 1]
1470	} else {
1471	set units [$_first hints zunits]
1472	}
1473	if { $units != "" } {
1474	# May be a space in the axis units.
1475	SendCmd [list axis units z $units]
1476	}
1477	# Get the new limits because the field changed.
1478	ResetAxes
1479	SendCmd "dataset scalar $_curFldName"
1480	SendCmd "heightmap colormode scalar $_curFldName"
1481	Zoom reset
1482	UpdateContourList
1483	DrawLegend
1484	}
1485	"-heightmapscale" {
1486	if { $_settings(-isheightmap) } {
1487	set scale [GetHeightmapScale]
1488	# Have to set the datasets individually because we are
1489	# tracking them in _comp2scale.
1490	foreach dataset [CurrentDatasets -all] {
1491	SendCmd "heightmap heightscale $scale $dataset"
1492	set _comp2scale($dataset) $scale
1493	}
1494	ResetAxes
1495	}
1496	}
1497	"-isheightmap" {
1498	set bool $_settings($what)
1499	set c $itk_component(view)
1500	StartBufferingCommands
1501	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1502	if { $bool } {
1503	set _settings(-heightmapscale) 50
1504	set _settings(-opacity) $_settings(-saveopacity)
1505	set _settings(-lighting) $_settings(-savelighting)
1506	set _settings(-outline) 0
1507	} else {
1508	set _settings(-heightmapscale) 0
1509	set _settings(-lighting) 0
1510	set _settings(-opacity) 100
1511	set _settings(-outline) $_settings(-saveoutline)
1512	}
1513	InitSettings -lighting -opacity -outline
1514	set scale [GetHeightmapScale]
1515	# Have to set the datasets individually because we are
1516	# tracking them in _comp2scale.
1517	foreach dataset [CurrentDatasets -all] {
1518	SendCmd "heightmap heightscale $scale $dataset"
1519	set _comp2scale($dataset) $scale
1520	}
1521	if { $bool } {
1522	$itk_component(lighting) configure -state normal
1523	$itk_component(opacity) configure -state normal
1524	$itk_component(scale) configure -state normal
1525	$itk_component(opacity_l) configure -state normal
1526	$itk_component(scale_l) configure -state normal
1527	$itk_component(outline) configure -state disabled
1528	if {$_view(ortho)} {
1529	SendCmd "camera mode ortho"
1530	} else {
1531	SendCmd "camera mode persp"
1532	}
1533	} else {
1534	$itk_component(lighting) configure -state disabled
1535	$itk_component(opacity) configure -state disabled
1536	$itk_component(scale) configure -state disabled
1537	$itk_component(opacity_l) configure -state disabled
1538	$itk_component(scale_l) configure -state disabled
1539	$itk_component(outline) configure -state normal
1540	SendCmd "camera mode image"
1541	}
1542	if {$_settings(-stretchtofit)} {
1543	if {$scale == 0} {
1544	SendCmd "camera aspect window"
1545	} else {
1546	SendCmd "camera aspect square"
1547	}
1548	}
1549	ResetAxes
1550	if { $bool } {
1551	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1552	$_arcball quaternion $q
1553	SendCmd "camera orient $q"
1554	} else {
1555	bind $c <ButtonPress-1> {}
1556	bind $c <B1-Motion> {}
1557	bind $c <ButtonRelease-1> {}
1558	}
1559	Zoom reset
1560	# Fix the mouse bindings for rotation/panning and the
1561	# camera mode. Ideally we'd create a bindtag for these.
1562	if { $bool } {
1563	# Bindings for rotation via mouse
1564	bind $c <ButtonPress-1> \
1565	[itcl::code $this Rotate click %x %y]
1566	bind $c <B1-Motion> \
1567	[itcl::code $this Rotate drag %x %y]
1568	bind $c <ButtonRelease-1> \
1569	[itcl::code $this Rotate release %x %y]
1570	}
1571	StopBufferingCommands
1572	}
1573	"-isolinecolor" {
1574	set color [$itk_component(isolinecolor) value]
1575	if { $color == "none" } {
1576	if { $_settings(-isolinesvisible) } {
1577	SendCmd "heightmap isolines 0"
1578	set _settings(-isolinesvisible) 0
1579	}
1580	} else {
1581	if { !$_settings(-isolinesvisible) } {
1582	SendCmd "heightmap isolines 1"
1583	set _settings(-isolinesvisible) 1
1584	}
1585	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1586	}
1587	DrawLegend
1588	}
1589	"-isolinesvisible" {
1590	set bool $_settings($what)
1591	SendCmd "heightmap isolines $bool"
1592	DrawLegend
1593	}
1594	"-legendvisible" {
1595	if { !$_settings($what) } {
1596	$itk_component(view) delete legend
1597	}
1598	DrawLegend
1599	}
1600	"-lighting" {
1601	if { $_settings(-isheightmap) } {
1602	set _settings(-savelighting) $_settings($what)
1603	set bool $_settings($what)
1604	SendCmd "heightmap lighting $bool"
1605	} else {
1606	SendCmd "heightmap lighting 0"
1607	}
1608	}
1609	"-numisolines" {
1610	set _settings($what) [$itk_component(numisolines) value]
1611	set _currentNumIsolines $_settings($what)
1612	UpdateContourList
1613	set _changed($what) 1
1614	SendCmd "heightmap contourlist [list $_contourList]"
1615	if {$_settings(-colormapdiscrete)} {
1616	set numColors [expr $_settings($what) + 1]
1617	SendCmd "colormap res $numColors"
1618	EventuallyRequestLegend
1619	} else {
1620	DrawLegend
1621	}
1622	}
1623	"-opacity" {
1624	set _changed($what) 1
1625	set val [expr $_settings($what) * 0.01]
1626	if { $_settings(-isheightmap) } {
1627	set _settings(-saveopacity) $_settings($what)
1628	SendCmd "heightmap opacity $val"
1629	} else {
1630	SendCmd "heightmap opacity 1.0"
1631	}
1632	}
1633	"-outline" {
1634	if { $_settings(-isheightmap) } {
1635	SendCmd "outline visible 0"
1636	} else {
1637	set _settings(-saveoutline) $_settings($what)
1638	set bool $_settings($what)
1639	SendCmd "outline visible $bool"
1640	}
1641	}
1642	"-stretchtofit" {
1643	set bool $_settings($what)
1644	if { $bool } {
1645	set heightScale [GetHeightmapScale]
1646	if {$heightScale == 0} {
1647	SendCmd "camera aspect window"
1648	} else {
1649	SendCmd "camera aspect square"
1650	}
1651	} else {
1652	SendCmd "camera aspect native"
1653	}
1654	Zoom reset
1655	}
1656	"-wireframe" {
1657	set bool $_settings($what)
1658	SendCmd "heightmap wireframe $bool"
1659	}
1660	default {
1661	error "don't know how to fix $what"
1662	}
1663	}
1664	}
1665
1666	#
1667	# RequestLegend --
1668	#
1669	# Request a new legend from the server. The size of the legend
1670	# is determined from the height of the canvas.
1671	#
1672	# This should be called when
1673	# 1. A new current colormap is set.
1674	# 2. Window is resized.
1675	# 3. The limits of the data have changed. (Just need a redraw).
1676	# 4. Number of isolines have changed. (Just need a redraw).
1677	# 5. Legend becomes visible (Just need a redraw).
1678	#
1679	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1680	set _legendPending 0
1681	set font "Arial 8"
1682	set w 12
1683	set lineht [font metrics $font -linespace]
1684	# color ramp height = (canvas height) - (min and max value lines) - 2
1685	set h [expr {$_height - 2 * ($lineht + 2)}]
1686	set _legendHeight $h
1687
1688	set fname $_curFldName
1689	if { [string match "component*" $fname] } {
1690	set title ""
1691	} else {
1692	if { [info exists _fields($fname)] } {
1693	foreach { title units } $_fields($fname) break
1694	if { $units != "" } {
1695	set title [format "%s (%s)" $title $units]
1696	}
1697	} else {
1698	set title $fname
1699	}
1700	}
1701	# If there's a title too, substract one more line
1702	if { $title != "" } {
1703	incr h -$lineht
1704	}
1705	if { $h < 1 } {
1706	return
1707	}
1708	# Set the legend on the first heightmap dataset.
1709	if { $_currentColormap != "" } {
1710	set cmap $_currentColormap
1711	SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1712	}
1713	}
1714
1715	#
1716	# ResetAxes --
1717	#
1718	# Set axis z bounds and range
1719	#
1720	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1721	if { ![info exists _limits($_curFldName)]} {
1722	SendCmd "dataset maprange all"
1723	SendCmd "axis autorange z on"
1724	SendCmd "axis autobounds z on"
1725	return
1726	}
1727	foreach { xmin xmax } $_limits(x) break
1728	foreach { ymin ymax } $_limits(y) break
1729	foreach { vmin vmax } $_limits($_curFldName) break
1730
1731	global tcl_precision
1732	set tcl_precision 17
1733	set xr [expr $xmax - $xmin]
1734	set yr [expr $ymax - $ymin]
1735	set vr [expr $vmax - $vmin]
1736	set r [expr ($yr > $xr) ? $yr : $xr]
1737	if { $vr < 1.0e-17 } {
1738	set dataScale 1.0
1739	} else {
1740	set dataScale [expr $r / $vr]
1741	}
1742	set heightScale [GetHeightmapScale]
1743	set bmin [expr $heightScale * $dataScale * $vmin]
1744	set bmax [expr $heightScale * $dataScale * $vmax]
1745	if {$heightScale > 0} {
1746	set zpos [expr - $bmin]
1747	SendCmd "heightmap pos 0 0 $zpos"
1748	} else {
1749	SendCmd "heightmap pos 0 0 0"
1750	}
1751	set bmax [expr $bmax - $bmin]
1752	set bmin 0
1753	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1754	SendCmd "axis bounds z $bmin $bmax"
1755	SendCmd "axis range z $_limits($_curFldName)"
1756	}
1757
1758	#
1759	# SetCurrentColormap --
1760	#
1761	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1762	# Keep track of the colormaps that we build.
1763	if { $name != "none" && ![info exists _colormaps($name)] } {
1764	BuildColormap $name
1765	set _colormaps($name) 1
1766	}
1767	set _currentColormap $name
1768	SendCmd "heightmap colormap $_currentColormap"
1769	}
1770
1771
1772	#
1773	# BuildColormap --
1774	#
1775	# Build the designated colormap on the server.
1776	#
1777	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1778	set cmap [ColorsToColormap $name]
1779	if { [llength $cmap] == 0 } {
1780	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1781	}
1782	set wmap "0.0 1.0 1.0 1.0"
1783	SendCmd "colormap add $name { $cmap } { $wmap }"
1784	}
1785
1786	# ----------------------------------------------------------------------
1787	# CONFIGURATION OPTION: -mode
1788	# ----------------------------------------------------------------------
1789	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1790	switch -- $itk_option(-mode) {
1791	"heightmap" {
1792	set _settings(-isheightmap) 1
1793	}
1794	"contour" {
1795	set _settings(-isheightmap) 0
1796	}
1797	default {
1798	error "unknown mode settings \"$itk_option(-mode)\""
1799	}
1800	}
1801	if { !$_reset } {
1802	AdjustSetting -isheightmap
1803	}
1804	}
1805
1806	# ----------------------------------------------------------------------
1807	# CONFIGURATION OPTION: -plotbackground
1808	# ----------------------------------------------------------------------
1809	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1810	if { [isconnected] } {
1811	set rgb [Color2RGB $itk_option(-plotbackground)]
1812	if { !$_reset } {
1813	SendCmd "screen bgcolor $rgb"
1814	}
1815	$itk_component(view) configure -background $itk_option(-plotbackground)
1816	}
1817	}
1818
1819	# ----------------------------------------------------------------------
1820	# CONFIGURATION OPTION: -plotforeground
1821	# ----------------------------------------------------------------------
1822	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1823	if { [isconnected] } {
1824	set rgb [Color2RGB $itk_option(-plotforeground)]
1825	if { !$_reset } {
1826	SendCmd "outline color $rgb"
1827	SendCmd "axis color all $rgb"
1828	}
1829	}
1830	}
1831
1832	itcl::body Rappture::VtkHeightmapViewer::limits3 { dataobj } {
1833	lappend limits x [$dataobj limits x]
1834	lappend limits y [$dataobj limits y]
1835	if { [catch { $dataobj limits $_curFldName } vlim] != 0 } {
1836	set vlim [$dataobj limits v]
1837	}
1838	lappend limits v $vlim
1839	return $limits
1840	}
1841
1842	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1843
1844	set fg [option get $itk_component(hull) font Font]
1845	#set bfg [option get $itk_component(hull) boldFont Font]
1846
1847	set inner [$itk_component(main) insert end \
1848	-title "Contour/Surface Settings" \
1849	-icon [Rappture::icon contour2]]
1850	$inner configure -borderwidth 4
1851
1852	checkbutton $inner.legend \
1853	-text "Legend" \
1854	-variable [itcl::scope _settings(-legendvisible)] \
1855	-command [itcl::code $this AdjustSetting -legendvisible] \
1856	-font "Arial 9"
1857
1858	checkbutton $inner.wireframe \
1859	-text "Wireframe" \
1860	-variable [itcl::scope _settings(-wireframe)] \
1861	-command [itcl::code $this AdjustSetting -wireframe] \
1862	-font "Arial 9"
1863
1864	itk_component add lighting {
1865	checkbutton $inner.lighting \
1866	-text "Enable Lighting" \
1867	-variable [itcl::scope _settings(-lighting)] \
1868	-command [itcl::code $this AdjustSetting -lighting] \
1869	-font "Arial 9"
1870	} {
1871	ignore -font
1872	}
1873	checkbutton $inner.edges \
1874	-text "Edges" \
1875	-variable [itcl::scope _settings(-edges)] \
1876	-command [itcl::code $this AdjustSetting -edges] \
1877	-font "Arial 9"
1878
1879	itk_component add outline {
1880	checkbutton $inner.outline \
1881	-text "Outline" \
1882	-variable [itcl::scope _settings(-outline)] \
1883	-command [itcl::code $this AdjustSetting -outline] \
1884	-font "Arial 9"
1885	} {
1886	ignore -font
1887	}
1888	checkbutton $inner.stretch \
1889	-text "Stretch to fit" \
1890	-variable [itcl::scope _settings(-stretchtofit)] \
1891	-command [itcl::code $this AdjustSetting -stretchtofit] \
1892	-font "Arial 9"
1893
1894	checkbutton $inner.isolines \
1895	-text "Isolines" \
1896	-variable [itcl::scope _settings(-isolinesvisible)] \
1897	-command [itcl::code $this AdjustSetting -isolinesvisible] \
1898	-font "Arial 9"
1899
1900	checkbutton $inner.colormapDiscrete \
1901	-text "Discrete Colormap" \
1902	-variable [itcl::scope _settings(-colormapdiscrete)] \
1903	-command [itcl::code $this AdjustSetting -colormapdiscrete] \
1904	-font "Arial 9"
1905
1906	itk_component add field_l {
1907	label $inner.field_l -text "Field" -font "Arial 9"
1908	} {
1909	ignore -font
1910	}
1911	itk_component add field {
1912	Rappture::Combobox $inner.field -width 10 -editable no
1913	}
1914	bind $inner.field <<Value>> \
1915	[itcl::code $this AdjustSetting -field]
1916
1917	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1918	itk_component add colormap {
1919	Rappture::Combobox $inner.colormap -width 10 -editable no
1920	}
1921	$inner.colormap choices insert end [GetColormapList -includeNone]
1922	$itk_component(colormap) value $_settings(-colormap)
1923	bind $inner.colormap <<Value>> \
1924	[itcl::code $this AdjustSetting -colormap]
1925
1926	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1927	itk_component add isolinecolor {
1928	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1929	}
1930	$inner.isolinecolor choices insert end \
1931	"black" "black" \
1932	"blue" "blue" \
1933	"cyan" "cyan" \
1934	"green" "green" \
1935	"grey" "grey" \
1936	"magenta" "magenta" \
1937	"orange" "orange" \
1938	"red" "red" \
1939	"white" "white" \
1940	"none" "none"
1941
1942	$itk_component(isolinecolor) value $_settings(-isolinecolor)
1943	bind $inner.isolinecolor <<Value>> \
1944	[itcl::code $this AdjustSetting -isolinecolor]
1945
1946	label $inner.background_l -text "Background Color" -font "Arial 9"
1947	itk_component add background {
1948	Rappture::Combobox $inner.background -width 10 -editable no
1949	}
1950	$inner.background choices insert end \
1951	"black" "black" \
1952	"white" "white" \
1953	"grey" "grey"
1954
1955	$itk_component(background) value "white"
1956	bind $inner.background <<Value>> \
1957	[itcl::code $this AdjustSetting -background]
1958
1959	itk_component add opacity_l {
1960	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1961	} {
1962	ignore -font
1963	}
1964	itk_component add opacity {
1965	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1966	-variable [itcl::scope _settings(-opacity)] \
1967	-showvalue off \
1968	-command [itcl::code $this AdjustSetting -opacity]
1969	}
1970	itk_component add scale_l {
1971	label $inner.scale_l -text "Scale" -font "Arial 9"
1972	} {
1973	ignore -font
1974	}
1975	itk_component add scale {
1976	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1977	-variable [itcl::scope _settings(-heightmapscale)] \
1978	-showvalue off \
1979	-command [itcl::code $this AdjustSetting -heightmapscale]
1980	}
1981	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1982	itk_component add numisolines {
1983	Rappture::Spinint $inner.numisolines \
1984	-min 0 -max 50 -font "arial 9"
1985	}
1986	$itk_component(numisolines) value $_settings(-numisolines)
1987	bind $itk_component(numisolines) <<Value>> \
1988	[itcl::code $this AdjustSetting -numisolines]
1989
1990	frame $inner.separator1 -height 2 -relief sunken -bd 1
1991	frame $inner.separator2 -height 2 -relief sunken -bd 1
1992
1993	blt::table $inner \
1994	0,0 $inner.field_l -anchor w -pady 2 \
1995	0,1 $inner.field -anchor w -pady 2 -fill x \
1996	1,0 $inner.colormap_l -anchor w -pady 2 \
1997	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1998	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
1999	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
2000	3,0 $inner.background_l -anchor w -pady 2 \
2001	3,1 $inner.background -anchor w -pady 2 -fill x \
2002	4,0 $inner.numisolines_l -anchor w -pady 2 \
2003	4,1 $inner.numisolines -anchor w -pady 2 \
2004	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
2005	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
2006	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
2007	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
2008	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
2009	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
2010	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
2011	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
2012	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
2013	14,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
2014	15,0 $inner.opacity_l -anchor w -pady 2 \
2015	15,1 $inner.opacity -fill x -pady 2 \
2016	16,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
2017	16,1 $inner.scale -fill x -pady 2 -cspan 2 \
2018
2019	blt::table configure $inner r* c* -resize none
2020	blt::table configure $inner r17 c1 -resize expand
2021	}
2022
2023	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
2024
2025	set fg [option get $itk_component(hull) font Font]
2026	#set bfg [option get $itk_component(hull) boldFont Font]
2027
2028	set inner [$itk_component(main) insert end \
2029	-title "Axis Settings" \
2030	-icon [Rappture::icon axis2]]
2031	$inner configure -borderwidth 4
2032
2033	checkbutton $inner.visible \
2034	-text "Axes" \
2035	-variable [itcl::scope _settings(-axisvisible)] \
2036	-command [itcl::code $this AdjustSetting -axisvisible] \
2037	-font "Arial 9"
2038	checkbutton $inner.labels \
2039	-text "Axis Labels" \
2040	-variable [itcl::scope _settings(-axislabels)] \
2041	-command [itcl::code $this AdjustSetting -axislabels] \
2042	-font "Arial 9"
2043	label $inner.grid_l -text "Grid" -font "Arial 9"
2044	checkbutton $inner.xgrid \
2045	-text "X" \
2046	-variable [itcl::scope _settings(-xgrid)] \
2047	-command [itcl::code $this AdjustSetting -xgrid] \
2048	-font "Arial 9"
2049	checkbutton $inner.ygrid \
2050	-text "Y" \
2051	-variable [itcl::scope _settings(-ygrid)] \
2052	-command [itcl::code $this AdjustSetting -ygrid] \
2053	-font "Arial 9"
2054	checkbutton $inner.zgrid \
2055	-text "Z" \
2056	-variable [itcl::scope _settings(-zgrid)] \
2057	-command [itcl::code $this AdjustSetting -zgrid] \
2058	-font "Arial 9"
2059	checkbutton $inner.minorticks \
2060	-text "Minor Ticks" \
2061	-variable [itcl::scope _settings(-axisminorticks)] \
2062	-command [itcl::code $this AdjustSetting -axisminorticks] \
2063	-font "Arial 9"
2064
2065
2066	label $inner.mode_l -text "Mode" -font "Arial 9"
2067
2068	itk_component add axisflymode {
2069	Rappture::Combobox $inner.mode -width 10 -editable no
2070	}
2071	$inner.mode choices insert end \
2072	"static_triad" "static" \
2073	"closest_triad" "closest" \
2074	"furthest_triad" "farthest" \
2075	"outer_edges" "outer"
2076	$itk_component(axisflymode) value $_settings(-axisflymode)
2077	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
2078
2079	blt::table $inner \
2080	0,0 $inner.visible -anchor w -cspan 4 \
2081	1,0 $inner.labels -anchor w -cspan 4 \
2082	2,0 $inner.minorticks -anchor w -cspan 4 \
2083	4,0 $inner.grid_l -anchor w \
2084	4,1 $inner.xgrid -anchor w \
2085	4,2 $inner.ygrid -anchor w \
2086	4,3 $inner.zgrid -anchor w \
2087	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2088	5,1 $inner.mode -fill x -cspan 3
2089
2090	blt::table configure $inner r* c* -resize none
2091	blt::table configure $inner r7 c6 -resize expand
2092	blt::table configure $inner r3 -height 0.125i
2093	}
2094
2095
2096	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2097	set inner [$itk_component(main) insert end \
2098	-title "Camera Settings" \
2099	-icon [Rappture::icon camera]]
2100	$inner configure -borderwidth 4
2101
2102	label $inner.view_l -text "view" -font "Arial 9"
2103	set f [frame $inner.view]
2104	foreach side { front back left right top bottom } {
2105	button $f.$side -image [Rappture::icon view$side] \
2106	-command [itcl::code $this SetOrientation $side]
2107	Rappture::Tooltip::for $f.$side "Change the view to $side"
2108	pack $f.$side -side left
2109	}
2110
2111	blt::table $inner \
2112	0,0 $inner.view_l -anchor e -pady 2 \
2113	0,1 $inner.view -anchor w -pady 2
2114
2115	set labels { qx qy qz qw xpan ypan zoom }
2116	set row 1
2117	foreach tag $labels {
2118	label $inner.${tag}label -text $tag -font "Arial 9"
2119	entry $inner.${tag} -font "Arial 9" -bg white \
2120	-textvariable [itcl::scope _view($tag)]
2121	bind $inner.${tag} <Return> \
2122	[itcl::code $this camera set ${tag}]
2123	bind $inner.${tag} <KP_Enter> \
2124	[itcl::code $this camera set ${tag}]
2125	blt::table $inner \
2126	$row,0 $inner.${tag}label -anchor e -pady 2 \
2127	$row,1 $inner.${tag} -anchor w -pady 2
2128	blt::table configure $inner r$row -resize none
2129	incr row
2130	}
2131	checkbutton $inner.ortho \
2132	-text "Orthographic Projection" \
2133	-variable [itcl::scope _view(ortho)] \
2134	-command [itcl::code $this camera set ortho] \
2135	-font "Arial 9"
2136	blt::table $inner \
2137	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2138	blt::table configure $inner r$row -resize none
2139	incr row
2140
2141	blt::table configure $inner c* r* -resize none
2142	blt::table configure $inner c2 -resize expand
2143	blt::table configure $inner r$row -resize expand
2144	}
2145
2146	#
2147	# camera --
2148	#
2149	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2150	switch -- $option {
2151	"show" {
2152	puts [array get _view]
2153	}
2154	"set" {
2155	set who [lindex $args 0]
2156	set x $_view($who)
2157	set code [catch { string is double $x } result]
2158	if { $code != 0 \|\| !$result } {
2159	return
2160	}
2161	switch -- $who {
2162	"ortho" {
2163	if {$_view(ortho)} {
2164	SendCmd "camera mode ortho"
2165	} else {
2166	SendCmd "camera mode persp"
2167	}
2168	}
2169	"xpan" - "ypan" {
2170	PanCamera
2171	}
2172	"qx" - "qy" - "qz" - "qw" {
2173	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2174	$_arcball quaternion $q
2175	EventuallyRotate $q
2176	}
2177	"zoom" {
2178	SendCmd "camera zoom $_view(zoom)"
2179	}
2180	}
2181	}
2182	}
2183	}
2184
2185	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2186	set bytes ""
2187	foreach dataobj [get] {
2188	foreach comp [$dataobj components] {
2189	set tag $dataobj-$comp
2190	set contents [$dataobj vtkdata $comp]
2191	append bytes "$contents\n"
2192	}
2193	}
2194	return [list .vtk $bytes]
2195	}
2196
2197	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2198	if { [image width $_image(download)] > 0 &&
2199	[image height $_image(download)] > 0 } {
2200	set bytes [$_image(download) data -format "jpeg -quality 100"]
2201	set bytes [Rappture::encoding::decode -as b64 $bytes]
2202	return [list .jpg $bytes]
2203	}
2204	return ""
2205	}
2206
2207	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2208	Rappture::Balloon $popup \
2209	-title "[Rappture::filexfer::label downloadWord] as..."
2210	set inner [$popup component inner]
2211	label $inner.summary -text "" -anchor w
2212	radiobutton $inner.vtk_button -text "VTK data file" \
2213	-variable [itcl::scope _downloadPopup(format)] \
2214	-font "Arial 9 " \
2215	-value vtk
2216	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2217	radiobutton $inner.image_button -text "Image File" \
2218	-variable [itcl::scope _downloadPopup(format)] \
2219	-font "Arial 9 " \
2220	-value image
2221	Rappture::Tooltip::for $inner.image_button \
2222	"Save as digital image."
2223
2224	button $inner.ok -text "Save" \
2225	-highlightthickness 0 -pady 2 -padx 3 \
2226	-command $command \
2227	-compound left \
2228	-image [Rappture::icon download]
2229
2230	button $inner.cancel -text "Cancel" \
2231	-highlightthickness 0 -pady 2 -padx 3 \
2232	-command [list $popup deactivate] \
2233	-compound left \
2234	-image [Rappture::icon cancel]
2235
2236	blt::table $inner \
2237	0,0 $inner.summary -cspan 2 \
2238	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2239	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2240	4,1 $inner.cancel -width .9i -fill y \
2241	4,0 $inner.ok -padx 2 -width .9i -fill y
2242	blt::table configure $inner r3 -height 4
2243	blt::table configure $inner r4 -pady 4
2244	raise $inner.image_button
2245	$inner.vtk_button invoke
2246	return $inner
2247	}
2248
2249	#
2250	# SetObjectStyle --
2251	#
2252	# Set the style of the heightmap/contour object. This gets calls
2253	# for each dataset once as it is loaded. It can overridden by
2254	# the user controls.
2255	#
2256	#
2257	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2258	# Parse style string.
2259	set tag $dataobj-$comp
2260	array set style {
2261	-color BCGYR
2262	-levels 10
2263	-opacity 1.0
2264	}
2265	set stylelist [$dataobj style $comp]
2266	if { $stylelist != "" } {
2267	array set style $stylelist
2268	}
2269	# This is too complicated. We want to set the colormap, number of
2270	# isolines and opacity for the dataset. They can be the default values,
2271	# the style hints loaded with the dataset, or set by user controls. As
2272	# datasets get loaded, they first use the defaults that are overidden
2273	# by the style hints. If the user changes the global controls, then that
2274	# overrides everything else. I don't know what it means when global
2275	# controls are specified as style hints by each dataset. It complicates
2276	# the code to handle aberrant cases.
2277
2278	if { $_changed(-opacity) } {
2279	set style(-opacity) [expr $_settings(-opacity) * 0.01]
2280	}
2281	if { $_changed(-numisolines) } {
2282	set style(-levels) $_settings(-numisolines)
2283	}
2284	if { $_changed(-colormap) } {
2285	set style(-color) $_settings(-colormap)
2286	}
2287	if { $_currentColormap == "" } {
2288	$itk_component(colormap) value $style(-color)
2289	}
2290	if { [info exists style(-stretchtofit)] } {
2291	set _settings(-stretchtofit) $style(-stretchtofit)
2292	AdjustSetting -stretchtofit
2293	}
2294	if { $_currentNumIsolines != $style(-levels) } {
2295	set _currentNumIsolines $style(-levels)
2296	set _settings(-numisolines) $_currentNumIsolines
2297	$itk_component(numisolines) value $_currentNumIsolines
2298	UpdateContourList
2299	DrawLegend
2300	}
2301	SendCmd "outline add $tag"
2302	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2303	SendCmd "outline visible $_settings(-outline) $tag"
2304	set scale [GetHeightmapScale]
2305	SendCmd "[list heightmap add contourlist $_contourList $scale $tag]"
2306	set _comp2scale($tag) $_settings(-heightmapscale)
2307	SendCmd "heightmap edges $_settings(-edges) $tag"
2308	SendCmd "heightmap wireframe $_settings(-wireframe) $tag"
2309	SetCurrentColormap $style(-color)
2310	set color [$itk_component(isolinecolor) value]
2311	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2312	SendCmd "heightmap lighting $_settings(-isheightmap) $tag"
2313	SendCmd "heightmap isolines $_settings(-isolinesvisible) $tag"
2314	SendCmd "heightmap surface $_settings(-colormapvisible) $tag"
2315	SendCmd "heightmap opacity $style(-opacity) $tag"
2316	set _settings(-opacity) [expr $style(-opacity) * 100.0]
2317	}
2318
2319	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2320	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2321	return 0
2322	}
2323	return 1
2324	}
2325
2326	# ----------------------------------------------------------------------
2327	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2328	#
2329	# Invoked automatically whenever the "legend" command comes in from
2330	# the rendering server. Indicates that binary image data with the
2331	# specified <size> will follow.
2332	# ----------------------------------------------------------------------
2333	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2334	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2335	if { [isconnected] } {
2336	set bytes [ReceiveBytes $size]
2337	if { ![info exists _image(legend)] } {
2338	set _image(legend) [image create photo]
2339	}
2340	$_image(legend) configure -data $bytes
2341	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2342	if { [catch {DrawLegend} errs] != 0 } {
2343	global errorInfo
2344	puts stderr "errs=$errs errorInfo=$errorInfo"
2345	}
2346	}
2347	}
2348
2349	#
2350	# DrawLegend --
2351	#
2352	# Draws the legend in the own canvas on the right side of the plot area.
2353	#
2354	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2355	set fname $_curFldName
2356	set c $itk_component(view)
2357	set w [winfo width $c]
2358	set h [winfo height $c]
2359	set font "Arial 8"
2360	set lineht [font metrics $font -linespace]
2361
2362	if { [string match "component*" $fname] } {
2363	set title ""
2364	} else {
2365	if { [info exists _fields($fname)] } {
2366	foreach { title units } $_fields($fname) break
2367	if { $units != "" } {
2368	set title [format "%s (%s)" $title $units]
2369	}
2370	} else {
2371	set title $fname
2372	}
2373	}
2374	set x [expr $w - 2]
2375	if { !$_settings(-legendvisible) } {
2376	$c delete legend
2377	return
2378	}
2379	if { [$c find withtag "legend"] == "" } {
2380	set y 2
2381	# If there's a legend title, create a text item for the title.
2382	$c create text $x $y \
2383	-anchor ne \
2384	-fill $itk_option(-plotforeground) -tags "title legend" \
2385	-font $font
2386	if { $title != "" } {
2387	incr y $lineht
2388	}
2389	$c create text $x $y \
2390	-anchor ne \
2391	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2392	-font $font
2393	incr y $lineht
2394	$c create image $x $y \
2395	-anchor ne \
2396	-image $_image(legend) -tags "colormap legend"
2397	$c create rectangle $x $y 1 1 \
2398	-fill "" -outline "" -tags "sensor legend"
2399	$c create text $x [expr {$h-2}] \
2400	-anchor se \
2401	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2402	-font $font
2403	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2404	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2405	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2406	}
2407	$c delete isoline
2408	set x2 $x
2409	set iw [image width $_image(legend)]
2410	set ih [image height $_image(legend)]
2411	set x1 [expr $x2 - ($iw*12)/10]
2412	set color [$itk_component(isolinecolor) value]
2413
2414	# Draw the isolines on the legend.
2415	array unset _isolines
2416	if { $color != "none" && [info exists _limits($_curFldName)] &&
2417	$_settings(-isolinesvisible) && $_currentNumIsolines > 0 } {
2418
2419	foreach { vmin vmax } $_limits($_curFldName) break
2420	set range [expr double($vmax - $vmin)]
2421	if { $range <= 0.0 } {
2422	set range 1.0; # Min is greater or equal to max.
2423	}
2424	set tags "isoline legend"
2425	set offset [expr 2 + $lineht]
2426	if { $title != "" } {
2427	incr offset $lineht
2428	}
2429	foreach value $_contourList {
2430	set norm [expr 1.0 - (($value - $vmin) / $range)]
2431	set y1 [expr int(round(($norm * $ih) + $offset))]
2432	for { set off 0 } { $off < 3 } { incr off } {
2433	set _isolines([expr $y1 + $off]) $value
2434	set _isolines([expr $y1 - $off]) $value
2435	}
2436	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2437	}
2438	}
2439
2440	$c bind title <ButtonPress> [itcl::code $this Combo post]
2441	$c bind title <Enter> [itcl::code $this Combo activate]
2442	$c bind title <Leave> [itcl::code $this Combo deactivate]
2443	# Reset the item coordinates according the current size of the plot.
2444	if { [info exists _limits($_curFldName)] } {
2445	foreach { vmin vmax } $_limits($_curFldName) break
2446	$c itemconfigure vmin -text [format %g $vmin]
2447	$c itemconfigure vmax -text [format %g $vmax]
2448	}
2449	set y 2
2450	# If there's a legend title, move the title to the correct position
2451	if { $title != "" } {
2452	$c itemconfigure title -text $title
2453	$c coords title $x $y
2454	incr y $lineht
2455	}
2456	$c coords vmax $x $y
2457	incr y $lineht
2458	$c coords colormap $x $y
2459	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2460	$c raise sensor
2461	$c coords vmin $x [expr {$h - 2}]
2462	}
2463
2464	#
2465	# EnterLegend --
2466	#
2467	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2468	SetLegendTip $x $y
2469	}
2470
2471	#
2472	# MotionLegend --
2473	#
2474	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2475	Rappture::Tooltip::tooltip cancel
2476	set c $itk_component(view)
2477	set cw [winfo width $c]
2478	set ch [winfo height $c]
2479	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2480	SetLegendTip $x $y
2481	}
2482	}
2483
2484	#
2485	# LeaveLegend --
2486	#
2487	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2488	Rappture::Tooltip::tooltip cancel
2489	.rappturetooltip configure -icon ""
2490	}
2491
2492	#
2493	# SetLegendTip --
2494	#
2495	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2496	set fname $_curFldName
2497	set c $itk_component(view)
2498	set w [winfo width $c]
2499	set h [winfo height $c]
2500	set font "Arial 8"
2501	set lineht [font metrics $font -linespace]
2502
2503	set ih [image height $_image(legend)]
2504	# Subtract off the offset of the color ramp from the top of the canvas
2505	set iy [expr $y - ($lineht + 2)]
2506
2507	if { [string match "component*" $fname] } {
2508	set title ""
2509	} else {
2510	if { [info exists _fields($fname)] } {
2511	foreach { title units } $_fields($fname) break
2512	if { $units != "" } {
2513	set title [format "%s (%s)" $title $units]
2514	}
2515	} else {
2516	set title $fname
2517	}
2518	}
2519	# If there's a legend title, increase the offset by the line height.
2520	if { $title != "" } {
2521	incr iy -$lineht
2522	}
2523
2524	# Make a swatch of the selected color
2525	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2526	return
2527	}
2528
2529	if { ![info exists _image(swatch)] } {
2530	set _image(swatch) [image create photo -width 24 -height 24]
2531	}
2532	set color [eval format "\#%02x%02x%02x" $pixel]
2533	$_image(swatch) put black -to 0 0 23 23
2534	$_image(swatch) put $color -to 1 1 22 22
2535
2536	# Compute the value of the point
2537	if { [info exists _limits($fname)] } {
2538	foreach { vmin vmax } $_limits($fname) break
2539	set t [expr 1.0 - (double($iy) / double($ih-1))]
2540	set value [expr $t * ($vmax - $vmin) + $vmin]
2541	} else {
2542	set value 0.0
2543	}
2544	set tipx [expr $x + 15]
2545	set tipy [expr $y - 5]
2546	.rappturetooltip configure -icon $_image(swatch)
2547	if { [info exists _isolines($y)] } {
2548	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2549	} else {
2550	Rappture::Tooltip::text $c [format "$title %g" $value]
2551	}
2552	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2553	}
2554
2555	# ----------------------------------------------------------------------
2556	# USAGE: _dropdown post
2557	# USAGE: _dropdown unpost
2558	# USAGE: _dropdown select
2559	#
2560	# Used internally to handle the dropdown list for this combobox. The
2561	# post/unpost options are invoked when the list is posted or unposted
2562	# to manage the relief of the controlling button. The select option
2563	# is invoked whenever there is a selection from the list, to assign
2564	# the value back to the gauge.
2565	# ----------------------------------------------------------------------
2566	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2567	set c $itk_component(view)
2568	switch -- $option {
2569	post {
2570	foreach { x1 y1 x2 y2 } [$c bbox title] break
2571	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2572	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2573	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2574	tk_popup $itk_component(fieldmenu) $x $y
2575	}
2576	activate {
2577	$c itemconfigure title -fill red
2578	}
2579	deactivate {
2580	$c itemconfigure title -fill $itk_option(-plotforeground)
2581	}
2582	invoke {
2583	$itk_component(field) value $_curFldLabel
2584	AdjustSetting -field
2585	}
2586	default {
2587	error "bad option \"$option\": should be post, unpost, select"
2588	}
2589	}
2590	}
2591
2592	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2593	if { $_settings(-isheightmap) } {
2594	set val $_settings(-heightmapscale)
2595	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2596	return $sval
2597	}
2598	return 0
2599	}
2600
2601	itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2602	array set positions {
2603	front "0.707107 0.707107 0 0"
2604	back "0 0 0.707107 0.707107"
2605	left "0.5 0.5 -0.5 -0.5"
2606	right "0.5 0.5 0.5 0.5"
2607	top "1 0 0 0"
2608	bottom "0 1 0 0"
2609	}
2610	foreach name { qw qx qy qz } value $positions($side) {
2611	set _view($name) $value
2612	}
2613	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2614	$_arcball quaternion $q
2615	SendCmd "camera orient $q"
2616	SendCmd "camera reset"
2617	set _view(xpan) 0
2618	set _view(ypan) 0
2619	set _view(zoom) 1.0
2620	}
2621
2622	itcl::body Rappture::VtkHeightmapViewer::UpdateContourList {} {
2623	if {$_currentNumIsolines == 0} {
2624	set _contourList ""
2625	return
2626	}
2627	if { ![info exists _limits($_curFldName)] } {
2628	return
2629	}
2630	foreach { vmin vmax } $_limits($_curFldName) break
2631	set v [blt::vector create \#auto]
2632	$v seq $vmin $vmax [expr $_currentNumIsolines+2]
2633	$v delete end 0
2634	set _contourList [$v range 0 end]
2635	blt::vector destroy $v
2636	}

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