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source: branches/1.3/gui/scripts/vtkheightmapviewer.tcl @ 4436

Last change on this file since 4436 was 4436, checked in by ldelgass, 10 years ago
Fix isolines setting
File size: 87.9 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 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	-colormapdiscrete 0
223	-colormapvisible 1
224	-edges 0
225	-field "Default"
226	-heightmapscale 50
227	-isheightmap 0
228	-isolinecolor black
229	-isolinesvisible 1
230	-legendvisible 1
231	-lighting 1
232	-numisolines 10
233	-opacity 100
234	-outline 0
235	-savelighting 1
236	-saveopacity 100
237	-saveoutline 0
238	-stretchtofit 0
239	-wireframe 0
240	-xgrid 0
241	-ygrid 0
242	-zgrid 0
243	}
244	array set _changed {
245	-colormap 0
246	-numisolines 0
247	-opacity 0
248	}
249	itk_component add view {
250	canvas $itk_component(plotarea).view \
251	-highlightthickness 0 -borderwidth 0
252	} {
253	usual
254	ignore -highlightthickness -borderwidth -background
255	}
256
257	itk_component add fieldmenu {
258	menu $itk_component(plotarea).menu \
259	-relief flat \
260	-tearoff no
261	} {
262	usual
263	ignore -background -foreground -relief -tearoff
264	}
265	set c $itk_component(view)
266	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
267	bind $c <4> [itcl::code $this Zoom in 0.25]
268	bind $c <5> [itcl::code $this Zoom out 0.25]
269	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
270	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
271	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
272	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
273	bind $c <Enter> "focus %W"
274	bind $c <Control-F1> [itcl::code $this ToggleConsole]
275
276	# Fix the scrollregion in case we go off screen
277	$c configure -scrollregion [$c bbox all]
278
279	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
280	set _map(cwidth) -1
281	set _map(cheight) -1
282	set _map(zoom) 1.0
283	set _map(original) ""
284
285	set f [$itk_component(main) component controls]
286	itk_component add reset {
287	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
288	-highlightthickness 0 \
289	-image [Rappture::icon reset-view] \
290	-command [itcl::code $this CameraReset]
291	} {
292	usual
293	ignore -highlightthickness
294	}
295	pack $itk_component(reset) -side top -padx 2 -pady { 2 0 }
296	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
297
298	itk_component add zoomin {
299	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
300	-highlightthickness 0 \
301	-image [Rappture::icon zoom-in] \
302	-command [itcl::code $this Zoom in]
303	} {
304	usual
305	ignore -highlightthickness
306	}
307	pack $itk_component(zoomin) -side top -padx 2 -pady { 2 0 }
308	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
309
310	itk_component add zoomout {
311	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
312	-highlightthickness 0 \
313	-image [Rappture::icon zoom-out] \
314	-command [itcl::code $this Zoom out]
315	} {
316	usual
317	ignore -highlightthickness
318	}
319	pack $itk_component(zoomout) -side top -padx 2 -pady { 2 0 }
320	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
321
322	itk_component add mode {
323	Rappture::PushButton $f.mode \
324	-onimage [Rappture::icon surface] \
325	-offimage [Rappture::icon surface] \
326	-variable [itcl::scope _settings(-isheightmap)] \
327	-command [itcl::code $this AdjustSetting -isheightmap] \
328	}
329	Rappture::Tooltip::for $itk_component(mode) \
330	"Toggle the surface/contour on/off"
331	pack $itk_component(mode) -padx 2 -pady { 2 0 }
332
333	itk_component add stretchtofit {
334	Rappture::PushButton $f.stretchtofit \
335	-onimage [Rappture::icon stretchtofit] \
336	-offimage [Rappture::icon stretchtofit] \
337	-variable [itcl::scope _settings(-stretchtofit)] \
338	-command [itcl::code $this AdjustSetting -stretchtofit] \
339	}
340	Rappture::Tooltip::for $itk_component(stretchtofit) \
341	"Stretch plot to fit window on/off"
342	pack $itk_component(stretchtofit) -padx 2 -pady 2
343
344	if { [catch {
345	BuildContourTab
346	BuildAxisTab
347	BuildCameraTab
348	} errs] != 0 } {
349	global errorInfo
350	puts stderr "errs=$errs errorInfo=$errorInfo"
351	}
352
353	# Hack around the Tk panewindow. The problem is that the requested
354	# size of the 3d view isn't set until an image is retrieved from
355	# the server. So the panewindow uses the tiny size.
356	set w 10000
357	pack forget $itk_component(view)
358	blt::table $itk_component(plotarea) \
359	0,0 $itk_component(view) -fill both -reqwidth $w
360	blt::table configure $itk_component(plotarea) c1 -resize none
361
362	# Bindings for panning via mouse
363	bind $itk_component(view) <ButtonPress-2> \
364	[itcl::code $this Pan click %x %y]
365	bind $itk_component(view) <B2-Motion> \
366	[itcl::code $this Pan drag %x %y]
367	bind $itk_component(view) <ButtonRelease-2> \
368	[itcl::code $this Pan release %x %y]
369
370	#bind $itk_component(view) <ButtonRelease-3> \
371	# [itcl::code $this Pick %x %y]
372
373	# Bindings for panning via keyboard
374	bind $itk_component(view) <KeyPress-Left> \
375	[itcl::code $this Pan set -10 0]
376	bind $itk_component(view) <KeyPress-Right> \
377	[itcl::code $this Pan set 10 0]
378	bind $itk_component(view) <KeyPress-Up> \
379	[itcl::code $this Pan set 0 -10]
380	bind $itk_component(view) <KeyPress-Down> \
381	[itcl::code $this Pan set 0 10]
382	bind $itk_component(view) <Shift-KeyPress-Left> \
383	[itcl::code $this Pan set -2 0]
384	bind $itk_component(view) <Shift-KeyPress-Right> \
385	[itcl::code $this Pan set 2 0]
386	bind $itk_component(view) <Shift-KeyPress-Up> \
387	[itcl::code $this Pan set 0 -2]
388	bind $itk_component(view) <Shift-KeyPress-Down> \
389	[itcl::code $this Pan set 0 2]
390
391	# Bindings for zoom via keyboard
392	bind $itk_component(view) <KeyPress-Prior> \
393	[itcl::code $this Zoom out]
394	bind $itk_component(view) <KeyPress-Next> \
395	[itcl::code $this Zoom in]
396
397	bind $itk_component(view) <Enter> "focus $itk_component(view)"
398
399	if {[string equal "x11" [tk windowingsystem]]} {
400	# Bindings for zoom via mouse
401	bind $itk_component(view) <4> [itcl::code $this Zoom out]
402	bind $itk_component(view) <5> [itcl::code $this Zoom in]
403	}
404
405	set _image(download) [image create photo]
406	eval itk_initialize $args
407	Connect
408	set _beforeConnect 0
409	}
410
411	# ----------------------------------------------------------------------
412	# DESTRUCTOR
413	# ----------------------------------------------------------------------
414	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
415	Disconnect
416	image delete $_image(plot)
417	image delete $_image(download)
418	catch { blt::arcball destroy $_arcball }
419	}
420
421	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
422	if { $_width < 2 } {
423	set _width 500
424	}
425	if { $_height < 2 } {
426	set _height 500
427	}
428	set _start [clock clicks -milliseconds]
429	SendCmd "screen size [expr $_width - 20] $_height"
430
431	set font "Arial 8"
432	set lh [font metrics $font -linespace]
433	set h [expr {$_height - 2 * ($lh + 2)}]
434	if { $h != $_legendHeight } {
435	EventuallyRequestLegend
436	} else {
437	DrawLegend
438	}
439	set _resizePending 0
440	}
441
442	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
443	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
444	SendCmd "camera orient $q"
445	set _rotatePending 0
446	}
447
448	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
449	if { !$_legendPending } {
450	set _legendPending 1
451	$_dispatcher event -idle !legend
452	}
453	}
454
455	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
456	set _width $w
457	set _height $h
458	$_arcball resize $w $h
459	if { !$_resizePending } {
460	set _resizePending 1
461	$_dispatcher event -after 250 !resize
462	}
463	}
464
465	set rotate_delay 100
466
467	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
468	foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
469	if { !$_rotatePending } {
470	set _rotatePending 1
471	global rotate_delay
472	$_dispatcher event -after $rotate_delay !rotate
473	}
474	}
475
476	# ----------------------------------------------------------------------
477	# USAGE: add <dataobj> ?<settings>?
478	#
479	# Clients use this to add a data object to the plot. The optional
480	# <settings> are used to configure the plot. Allowed settings are
481	# -color, -brightness, -width, -linestyle, and -raise.
482	# ----------------------------------------------------------------------
483	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
484	if { ![$dataobj isvalid] } {
485	return; # Object doesn't contain valid data.
486	}
487	array set params {
488	-color auto
489	-width 1
490	-linestyle solid
491	-brightness 0
492	-raise 0
493	-description ""
494	-param ""
495	-type ""
496	}
497	array set params $settings
498	set params(-description) ""
499	set params(-param) ""
500	array set params $settings
501
502	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
503	# can't handle -autocolors yet
504	set params(-color) white
505	}
506	set pos [lsearch -exact $_dlist $dataobj]
507	if {$pos < 0} {
508	lappend _dlist $dataobj
509	}
510	set _obj2ovride($dataobj-color) $params(-color)
511	set _obj2ovride($dataobj-width) $params(-width)
512	set _obj2ovride($dataobj-raise) $params(-raise)
513	$_dispatcher event -idle !rebuild
514	}
515
516
517	# ----------------------------------------------------------------------
518	# USAGE: delete ?<dataobj1> <dataobj2> ...?
519	#
520	# Clients use this to delete a dataobj from the plot. If no dataobjs
521	# are specified, then all dataobjs are deleted. No data objects are
522	# deleted. They are only removed from the display list.
523	#
524	# ----------------------------------------------------------------------
525	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
526	if { [llength $args] == 0} {
527	set args $_dlist
528	}
529	# Delete all specified dataobjs
530	set changed 0
531	foreach dataobj $args {
532	set pos [lsearch -exact $_dlist $dataobj]
533	if { $pos < 0 } {
534	continue; # Don't know anything about it.
535	}
536	# Remove it from the dataobj list.
537	set _dlist [lreplace $_dlist $pos $pos]
538	array unset _obj2ovride $dataobj-*
539	array unset _settings $dataobj-*
540	set changed 1
541	}
542	# If anything changed, then rebuild the plot
543	if { $changed } {
544	$_dispatcher event -idle !rebuild
545	}
546	}
547
548	# ----------------------------------------------------------------------
549	# USAGE: get ?-objects?
550	# USAGE: get ?-visible?
551	# USAGE: get ?-image view?
552	#
553	# Clients use this to query the list of objects being plotted, in
554	# order from bottom to top of this result. The optional "-image"
555	# flag can also request the internal images being shown.
556	# ----------------------------------------------------------------------
557	itcl::body Rappture::VtkHeightmapViewer::get {args} {
558	if {[llength $args] == 0} {
559	set args "-objects"
560	}
561	set op [lindex $args 0]
562	switch -- $op {
563	"-objects" {
564	# put the dataobj list in order according to -raise options
565	set dlist {}
566	foreach dataobj $_dlist {
567	if { ![IsValidObject $dataobj] } {
568	continue
569	}
570	if {[info exists _obj2ovride($dataobj-raise)] &&
571	$_obj2ovride($dataobj-raise)} {
572	set dlist [linsert $dlist 0 $dataobj]
573	} else {
574	lappend dlist $dataobj
575	}
576	}
577	return $dlist
578	}
579	"-visible" {
580	set dlist {}
581	foreach dataobj $_dlist {
582	if { ![IsValidObject $dataobj] } {
583	continue
584	}
585	if { ![info exists _obj2ovride($dataobj-raise)] } {
586	# No setting indicates that the object isn't visible.
587	continue
588	}
589	# Otherwise use the -raise parameter to put the object to
590	# the front of the list.
591	if { $_obj2ovride($dataobj-raise) } {
592	set dlist [linsert $dlist 0 $dataobj]
593	} else {
594	lappend dlist $dataobj
595	}
596	}
597	return $dlist
598	}
599	-image {
600	if {[llength $args] != 2} {
601	error "wrong # args: should be \"get -image view\""
602	}
603	switch -- [lindex $args end] {
604	view {
605	return $_image(plot)
606	}
607	default {
608	error "bad image name \"[lindex $args end]\": should be view"
609	}
610	}
611	}
612	default {
613	error "bad option \"$op\": should be -objects or -image"
614	}
615	}
616	}
617
618	#
619	# scale --
620	#
621	# This gets called either incrementally as new simulations are
622	# added or all at once as a sequence of heightmaps.
623	# This accounts for all objects--even those not showing on the
624	# screen. Because of this, the limits are appropriate for all
625	# objects as the user scans through data in the ResultSet viewer.
626	#
627	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
628	foreach dataobj $args {
629	if { ![$dataobj isvalid] } {
630	continue; # Object doesn't contain valid data.
631	}
632	foreach axis { x y } {
633	set lim [$dataobj limits $axis]
634	if { ![info exists _limits($axis)] } {
635	set _limits($axis) $lim
636	continue
637	}
638	foreach {min max} $lim break
639	foreach {amin amax} $_limits($axis) break
640	if { $amin > $min } {
641	set amin $min
642	}
643	if { $amax < $max } {
644	set amax $max
645	}
646	set _limits($axis) [list $amin $amax]
647	set units [$dataobj hints ${axis}units]
648	set found($units) 1
649	}
650	foreach { fname lim } [$dataobj fieldlimits] {
651	if { ![info exists _limits($fname)] } {
652	set _limits($fname) $lim
653	continue
654	}
655	foreach {min max} $lim break
656	foreach {fmin fmax} $_limits($fname) break
657	if { $fmin > $min } {
658	set fmin $min
659	}
660	if { $fmax < $max } {
661	set fmax $max
662	}
663	set _limits($fname) [list $fmin $fmax]
664	}
665	}
666	if { [array size found] > 1 } {
667	set _settings(-stretchtofit) 1
668	} else {
669	# Check if the range of the x and y axes requires that we stretch
670	# the contour to fit the plotting area. This can happen when the
671	# x and y scales differ greatly (> 100x)
672	foreach {xmin xmax} $_limits(x) break
673	foreach {ymin ymax} $_limits(y) break
674	if { (($xmax - $xmin) > (($ymax -$ymin) * $_maxScale)) \|\|
675	((($xmax - $xmin) * $_maxScale) < ($ymax -$ymin)) } {
676	set _settings(-stretchtofit) 1
677	}
678	}
679	}
680
681	# ----------------------------------------------------------------------
682	# USAGE: download coming
683	# USAGE: download controls <downloadCommand>
684	# USAGE: download now
685	#
686	# Clients use this method to create a downloadable representation
687	# of the plot. Returns a list of the form {ext string}, where
688	# "ext" is the file extension (indicating the type of data) and
689	# "string" is the data itself.
690	# ----------------------------------------------------------------------
691	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
692	switch $option {
693	coming {
694	if {[catch {
695	blt::winop snap $itk_component(plotarea) $_image(download)
696	}]} {
697	$_image(download) configure -width 1 -height 1
698	$_image(download) put #000000
699	}
700	}
701	controls {
702	set popup .vtkviewerdownload
703	if { ![winfo exists .vtkviewerdownload] } {
704	set inner [BuildDownloadPopup $popup [lindex $args 0]]
705	} else {
706	set inner [$popup component inner]
707	}
708	set _downloadPopup(image_controls) $inner.image_frame
709	set num [llength [get]]
710	set num [expr {($num == 1) ? "1 result" : "$num results"}]
711	set word [Rappture::filexfer::label downloadWord]
712	$inner.summary configure -text "$word $num in the following format:"
713	update idletasks ;# Fix initial sizes
714	return $popup
715	}
716	now {
717	set popup .vtkviewerdownload
718	if {[winfo exists .vtkviewerdownload]} {
719	$popup deactivate
720	}
721	switch -- $_downloadPopup(format) {
722	"image" {
723	return [$this GetImage [lindex $args 0]]
724	}
725	"vtk" {
726	return [$this GetVtkData [lindex $args 0]]
727	}
728	}
729	return ""
730	}
731	default {
732	error "bad option \"$option\": should be coming, controls, now"
733	}
734	}
735	}
736
737	# ----------------------------------------------------------------------
738	# USAGE: Connect ?<host:port>,<host:port>...?
739	#
740	# Clients use this method to establish a connection to a new
741	# server, or to reestablish a connection to the previous server.
742	# Any existing connection is automatically closed.
743	# ----------------------------------------------------------------------
744	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
745	global readyForNextFrame
746	set readyForNextFrame 1
747	set _reset 1
748	set _hosts [GetServerList "vtkvis"]
749	if { "" == $_hosts } {
750	return 0
751	}
752	set result [VisViewer::Connect $_hosts]
753	if { $result } {
754	if { $_reportClientInfo } {
755	# Tell the server the viewer, hub, user and session.
756	# Do this immediately on connect before buffering any commands
757	global env
758
759	set info {}
760	set user "???"
761	if { [info exists env(USER)] } {
762	set user $env(USER)
763	}
764	set session "???"
765	if { [info exists env(SESSION)] } {
766	set session $env(SESSION)
767	}
768	lappend info "hub" [exec hostname]
769	lappend info "client" "vtkheightmapviewer"
770	lappend info "user" $user
771	lappend info "session" $session
772	SendCmd "clientinfo [list $info]"
773	}
774	set w [winfo width $itk_component(view)]
775	set h [winfo height $itk_component(view)]
776	EventuallyResize $w $h
777	}
778	return $result
779	}
780
781	#
782	# isconnected --
783	#
784	# Indicates if we are currently connected to the visualization server.
785	#
786	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
787	return [VisViewer::IsConnected]
788	}
789
790	#
791	# disconnect --
792	#
793	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
794	Disconnect
795	set _reset 1
796	}
797
798	#
799	# Disconnect --
800	#
801	# Clients use this method to disconnect from the current rendering
802	# server.
803	#
804	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
805	VisViewer::Disconnect
806
807	$_dispatcher cancel !rebuild
808	$_dispatcher cancel !resize
809	$_dispatcher cancel !rotate
810	$_dispatcher cancel !legend
811	# disconnected -- no more data sitting on server
812	array unset _datasets
813	array unset _data
814	array unset _colormaps
815	array unset _obj2datasets
816	global readyForNextFrame
817	set readyForNextFrame 1
818	}
819
820	# ----------------------------------------------------------------------
821	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
822	#
823	# Invoked automatically whenever the "image" command comes in from
824	# the rendering server. Indicates that binary image data with the
825	# specified <size> will follow.
826	# ----------------------------------------------------------------------
827	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
828	global readyForNextFrame
829	set readyForNextFrame 1
830	array set info {
831	-token "???"
832	-bytes 0
833	-type image
834	}
835	array set info $args
836	set bytes [ReceiveBytes $info(-bytes)]
837	if { $info(-type) == "image" } {
838	if 0 {
839	set f [open "last.ppm" "w"]
840	puts $f $bytes
841	close $f
842	}
843	$_image(plot) configure -data $bytes
844	set time [clock seconds]
845	set date [clock format $time]
846	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
847	if { $_start > 0 } {
848	set finish [clock clicks -milliseconds]
849	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
850	set _start 0
851	}
852	} elseif { $info(type) == "print" } {
853	set tag $this-print-$info(-token)
854	set _hardcopy($tag) $bytes
855	}
856	}
857
858	#
859	# ReceiveDataset --
860	#
861	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
862	if { ![isconnected] } {
863	return
864	}
865	set option [lindex $args 0]
866	switch -- $option {
867	"scalar" {
868	set option [lindex $args 1]
869	switch -- $option {
870	"world" {
871	foreach { x y z value tag } [lrange $args 2 end] break
872	}
873	"pixel" {
874	foreach { x y value tag } [lrange $args 2 end] break
875	}
876	}
877	}
878	"vector" {
879	set option [lindex $args 1]
880	switch -- $option {
881	"world" {
882	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
883	}
884	"pixel" {
885	foreach { x y vx vy vz tag } [lrange $args 2 end] break
886	}
887	}
888	}
889	"names" {
890	foreach { name } [lindex $args 1] {
891	#puts stderr "Dataset: $name"
892	}
893	}
894	default {
895	error "unknown dataset option \"$option\" from server"
896	}
897	}
898	}
899
900	# ----------------------------------------------------------------------
901	# USAGE: Rebuild
902	#
903	# Called automatically whenever something changes that affects the
904	# data in the widget. Clears any existing data and rebuilds the
905	# widget to display new data.
906	# ----------------------------------------------------------------------
907	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
908	set w [winfo width $itk_component(view)]
909	set h [winfo height $itk_component(view)]
910	if { $w < 2 \|\| $h < 2 } {
911	$_dispatcher event -idle !rebuild
912	return
913	}
914
915	# Turn on buffering of commands to the server. We don't want to
916	# be preempted by a server disconnect/reconnect (which automatically
917	# generates a new call to Rebuild).
918	StartBufferingCommands
919
920	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
921	set _width $w
922	set _height $h
923	$_arcball resize $w $h
924	DoResize
925	if { $_settings(-stretchtofit) } {
926	AdjustSetting -stretchtofit
927	}
928	}
929	if { $_reset } {
930	#
931	# Reset the camera and other view parameters
932	#
933	InitSettings -isheightmap -background
934
935	# Let's see how this goes. I think it's preferable to overloading the
936	# axis title with the exponent.
937	SendCmd "axis exp 0 0 0 1"
938
939	SendCmd "axis lrot z 90"
940	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
941	$_arcball quaternion $q
942	if {$_settings(-isheightmap) } {
943	if { $_view(ortho)} {
944	SendCmd "camera mode ortho"
945	} else {
946	SendCmd "camera mode persp"
947	}
948	DoRotate
949	SendCmd "camera reset"
950	}
951	PanCamera
952	StopBufferingCommands
953	SendCmd "imgflush"
954	StartBufferingCommands
955	}
956
957	set _first ""
958	# Start off with no datasets are visible.
959	SendCmd "dataset visible 0"
960	set scale [GetHeightmapScale]
961	foreach dataobj [get -objects] {
962	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
963	set _first $dataobj
964	}
965	set _obj2datasets($dataobj) ""
966	foreach comp [$dataobj components] {
967	set tag $dataobj-$comp
968	if { ![info exists _datasets($tag)] } {
969	set bytes [$dataobj vtkdata $comp]
970	if 0 {
971	set f [open /tmp/vtkheightmap.vtk "w"]
972	puts $f $bytes
973	close $f
974	}
975	set length [string length $bytes]
976	if { $_reportClientInfo } {
977	set info {}
978	lappend info "tool_id" [$dataobj hints toolId]
979	lappend info "tool_name" [$dataobj hints toolName]
980	lappend info "tool_version" [$dataobj hints toolRevision]
981	lappend info "tool_title" [$dataobj hints toolTitle]
982	lappend info "dataset_label" [$dataobj hints label]
983	lappend info "dataset_size" $length
984	lappend info "dataset_tag" $tag
985	SendCmd [list "clientinfo" $info]
986	}
987	SendCmd "dataset add $tag data follows $length"
988	append _outbuf $bytes
989	set _datasets($tag) 1
990	SetObjectStyle $dataobj $comp
991	}
992	lappend _obj2datasets($dataobj) $tag
993	if { [info exists _obj2ovride($dataobj-raise)] } {
994	# Setting dataset visible enables outline
995	# and heightmap
996	SendCmd "dataset visible 1 $tag"
997	}
998	if { ![info exists _comp2scale($tag)] \|\|
999	$_comp2scale($tag) != $scale } {
1000	SendCmd "heightmap heightscale $scale $tag"
1001	set _comp2scale($tag) $scale
1002	}
1003	}
1004	}
1005	if { $_first != "" } {
1006	$itk_component(field) choices delete 0 end
1007	$itk_component(fieldmenu) delete 0 end
1008	array unset _fields
1009	set _curFldName ""
1010	foreach cname [$_first components] {
1011	foreach fname [$_first fieldnames $cname] {
1012	if { [info exists _fields($fname)] } {
1013	continue
1014	}
1015	foreach { label units components } \
1016	[$_first fieldinfo $fname] break
1017	$itk_component(field) choices insert end "$fname" "$label"
1018	$itk_component(fieldmenu) add radiobutton -label "$label" \
1019	-value $label -variable [itcl::scope _curFldLabel] \
1020	-selectcolor red \
1021	-activebackground $itk_option(-plotbackground) \
1022	-activeforeground $itk_option(-plotforeground) \
1023	-font "Arial 8" \
1024	-command [itcl::code $this Combo invoke]
1025	set _fields($fname) [list $label $units $components]
1026	if { $_curFldName == "" } {
1027	set _curFldName $fname
1028	set _curFldLabel $label
1029	}
1030	}
1031	}
1032	$itk_component(field) value $_curFldLabel
1033	}
1034	InitSettings -stretchtofit -outline
1035
1036	if { $_reset } {
1037	SendCmd "axis tickpos outside"
1038	foreach axis { x y z } {
1039	SendCmd "axis lformat $axis %g"
1040	}
1041
1042	foreach axis { x y z } {
1043	if { $axis == "z" } {
1044	set label [$_first hints label]
1045	} else {
1046	set label [$_first hints ${axis}label]
1047	}
1048	if { $label == "" } {
1049	if {$axis == "z"} {
1050	if { [string match "component*" $_curFldName] } {
1051	set label [string toupper $axis]
1052	} else {
1053	set label $_curFldLabel
1054	}
1055	} else {
1056	set label [string toupper $axis]
1057	}
1058	}
1059	# May be a space in the axis label.
1060	SendCmd [list axis name $axis $label]
1061
1062	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1063	set units [lindex $_fields($_curFldName) 1]
1064	} else {
1065	set units [$_first hints ${axis}units]
1066	}
1067	if { $units != "" } {
1068	# May be a space in the axis units.
1069	SendCmd [list axis units $axis $units]
1070	}
1071	}
1072	#
1073	# Reset the camera and other view parameters
1074	#
1075	ResetAxes
1076	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1077	$_arcball quaternion $q
1078	if {$_settings(-isheightmap) } {
1079	if { $_view(ortho)} {
1080	SendCmd "camera mode ortho"
1081	} else {
1082	SendCmd "camera mode persp"
1083	}
1084	DoRotate
1085	SendCmd "camera reset"
1086	}
1087	PanCamera
1088	InitSettings -xgrid -ygrid -zgrid \
1089	-axisvisible -axislabels -heightmapscale -field -isheightmap \
1090	-numisolines
1091	if { [array size _fields] < 2 } {
1092	blt::table forget $itk_component(field) $itk_component(field_l)
1093	}
1094	RequestLegend
1095	set _reset 0
1096	}
1097	global readyForNextFrame
1098	set readyForNextFrame 0; # Don't advance to the next frame
1099
1100	# Actually write the commands to the server socket. If it fails, we don't
1101	# care. We're finished here.
1102	blt::busy hold $itk_component(hull)
1103	StopBufferingCommands
1104	blt::busy release $itk_component(hull)
1105	}
1106
1107	# ----------------------------------------------------------------------
1108	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1109	#
1110	# Returns a list of server IDs for the current datasets being displayed. This
1111	# is normally a single ID, but it might be a list of IDs if the current data
1112	# object has multiple components.
1113	# ----------------------------------------------------------------------
1114	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1115	set flag [lindex $args 0]
1116	switch -- $flag {
1117	"-all" {
1118	if { [llength $args] > 1 } {
1119	error "CurrentDatasets: can't specify dataobj after \"-all\""
1120	}
1121	set dlist [get -objects]
1122	}
1123	"-visible" {
1124	if { [llength $args] > 1 } {
1125	set dlist {}
1126	set args [lrange $args 1 end]
1127	foreach dataobj $args {
1128	if { [info exists _obj2ovride($dataobj-raise)] } {
1129	lappend dlist $dataobj
1130	}
1131	}
1132	} else {
1133	set dlist [get -visible]
1134	}
1135	}
1136	default {
1137	set dlist $args
1138	}
1139	}
1140	set rlist ""
1141	foreach dataobj $dlist {
1142	foreach comp [$dataobj components] {
1143	set tag $dataobj-$comp
1144	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1145	lappend rlist $tag
1146	}
1147	}
1148	}
1149	return $rlist
1150	}
1151
1152	itcl::body Rappture::VtkHeightmapViewer::CameraReset {} {
1153	array set _view {
1154	qw 0.36
1155	qx 0.25
1156	qy 0.50
1157	qz 0.70
1158	zoom 1.0
1159	xpan 0
1160	ypan 0
1161	}
1162	if { $_first != "" } {
1163	set location [$_first hints camera]
1164	if { $location != "" } {
1165	array set _view $location
1166	}
1167	}
1168	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1169	$_arcball quaternion $q
1170	if {$_settings(-isheightmap) } {
1171	DoRotate
1172	}
1173	SendCmd "camera reset"
1174	}
1175
1176	# ----------------------------------------------------------------------
1177	# USAGE: Zoom in
1178	# USAGE: Zoom out
1179	# USAGE: Zoom reset
1180	#
1181	# Called automatically when the user clicks on one of the zoom
1182	# controls for this widget. Changes the zoom for the current view.
1183	# ----------------------------------------------------------------------
1184	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1185	switch -- $option {
1186	"in" {
1187	set _view(zoom) [expr {$_view(zoom)*1.25}]
1188	SendCmd "camera zoom $_view(zoom)"
1189	}
1190	"out" {
1191	set _view(zoom) [expr {$_view(zoom)*0.8}]
1192	SendCmd "camera zoom $_view(zoom)"
1193	}
1194	"reset" {
1195	array set _view {
1196	zoom 1.0
1197	xpan 0
1198	ypan 0
1199	}
1200	SendCmd "camera reset"
1201	}
1202	}
1203	}
1204
1205	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1206	set x $_view(xpan)
1207	set y $_view(ypan)
1208	SendCmd "camera pan $x $y"
1209	}
1210
1211
1212	# ----------------------------------------------------------------------
1213	# USAGE: Rotate click <x> <y>
1214	# USAGE: Rotate drag <x> <y>
1215	# USAGE: Rotate release <x> <y>
1216	#
1217	# Called automatically when the user clicks/drags/releases in the
1218	# plot area. Moves the plot according to the user's actions.
1219	# ----------------------------------------------------------------------
1220	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1221	switch -- $option {
1222	"click" {
1223	$itk_component(view) configure -cursor fleur
1224	set _click(x) $x
1225	set _click(y) $y
1226	}
1227	"drag" {
1228	if {[array size _click] == 0} {
1229	Rotate click $x $y
1230	} else {
1231	set w [winfo width $itk_component(view)]
1232	set h [winfo height $itk_component(view)]
1233	if {$w <= 0 \|\| $h <= 0} {
1234	return
1235	}
1236
1237	if {[catch {
1238	# this fails sometimes for no apparent reason
1239	set dx [expr {double($x-$_click(x))/$w}]
1240	set dy [expr {double($y-$_click(y))/$h}]
1241	}]} {
1242	return
1243	}
1244	if { $dx == 0 && $dy == 0 } {
1245	return
1246	}
1247	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1248	EventuallyRotate $q
1249	set _click(x) $x
1250	set _click(y) $y
1251	}
1252	}
1253	"release" {
1254	Rotate drag $x $y
1255	$itk_component(view) configure -cursor ""
1256	catch {unset _click}
1257	}
1258	default {
1259	error "bad option \"$option\": should be click, drag, release"
1260	}
1261	}
1262	}
1263
1264	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1265	foreach tag [CurrentDatasets -visible] {
1266	SendCmd "dataset getscalar pixel $x $y $tag"
1267	}
1268	}
1269
1270	# ----------------------------------------------------------------------
1271	# USAGE: $this Pan click x y
1272	# $this Pan drag x y
1273	# $this Pan release x y
1274	#
1275	# Called automatically when the user clicks on one of the zoom
1276	# controls for this widget. Changes the zoom for the current view.
1277	# ----------------------------------------------------------------------
1278	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1279	switch -- $option {
1280	"set" {
1281	set w [winfo width $itk_component(view)]
1282	set h [winfo height $itk_component(view)]
1283	set x [expr $x / double($w)]
1284	set y [expr $y / double($h)]
1285	set _view(xpan) [expr $_view(xpan) + $x]
1286	set _view(ypan) [expr $_view(ypan) + $y]
1287	PanCamera
1288	return
1289	}
1290	"click" {
1291	set _click(x) $x
1292	set _click(y) $y
1293	$itk_component(view) configure -cursor hand1
1294	}
1295	"drag" {
1296	if { ![info exists _click(x)] } {
1297	set _click(x) $x
1298	}
1299	if { ![info exists _click(y)] } {
1300	set _click(y) $y
1301	}
1302	set w [winfo width $itk_component(view)]
1303	set h [winfo height $itk_component(view)]
1304	set dx [expr ($_click(x) - $x)/double($w)]
1305	set dy [expr ($_click(y) - $y)/double($h)]
1306	set _click(x) $x
1307	set _click(y) $y
1308	set _view(xpan) [expr $_view(xpan) - $dx]
1309	set _view(ypan) [expr $_view(ypan) - $dy]
1310	PanCamera
1311	}
1312	"release" {
1313	Pan drag $x $y
1314	$itk_component(view) configure -cursor ""
1315	}
1316	default {
1317	error "unknown option \"$option\": should set, click, drag, or release"
1318	}
1319	}
1320	}
1321
1322	# ----------------------------------------------------------------------
1323	# USAGE: InitSettings <what> ?<value>?
1324	#
1325	# Used internally to update rendering settings whenever parameters
1326	# change in the popup settings panel. Sends the new settings off
1327	# to the back end.
1328	# ----------------------------------------------------------------------
1329	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1330	foreach spec $args {
1331	if { [info exists _settings($_first${spec})] } {
1332	# Reset global setting with dataobj specific setting
1333	set _settings($spec) $_settings($_first${spec})
1334	}
1335	AdjustSetting $spec
1336	}
1337	}
1338
1339	#
1340	# AdjustSetting --
1341	#
1342	# Changes/updates a specific setting in the widget. There are
1343	# usually user-setable option. Commands are sent to the render
1344	# server.
1345	#
1346	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1347	if { $_beforeConnect } {
1348	return
1349	}
1350	switch -- $what {
1351	"-axisflymode" {
1352	set mode [$itk_component(axisflymode) value]
1353	set mode [$itk_component(axisflymode) translate $mode]
1354	set _settings($what) $mode
1355	SendCmd "axis flymode $mode"
1356	}
1357	"-axislabels" {
1358	set bool $_settings($what)
1359	SendCmd "axis labels all $bool"
1360	}
1361	"-axisminorticks" {
1362	set bool $_settings($what)
1363	foreach axis { x y z } {
1364	SendCmd "axis minticks ${axis} $bool"
1365	}
1366	}
1367	"-axisvisible" {
1368	set bool $_settings($what)
1369	SendCmd "axis visible all $bool"
1370	}
1371	"-xgrid" - "-ygrid" - "-zgrid" {
1372	set axis [string tolower [string range $what 1 1]]
1373	set bool $_settings($what)
1374	SendCmd "axis grid $axis $bool"
1375	}
1376	"-background" {
1377	set bg [$itk_component(background) value]
1378	array set fgcolors {
1379	"black" "white"
1380	"white" "black"
1381	"grey" "black"
1382	}
1383	set fg $fgcolors($bg)
1384	configure -plotbackground $bg -plotforeground $fg
1385	$itk_component(view) delete "legend"
1386	SendCmd "screen bgcolor [Color2RGB $bg]"
1387	SendCmd "outline color [Color2RGB $fg]"
1388	SendCmd "axis color all [Color2RGB $fg]"
1389	DrawLegend
1390	}
1391	"-colormap" {
1392	set _changed($what) 1
1393	StartBufferingCommands
1394	set color [$itk_component(colormap) value]
1395	set _settings($what) $color
1396	if { $color == "none" } {
1397	if { $_settings(-colormapvisible) } {
1398	SendCmd "heightmap surface 0"
1399	set _settings(-colormapvisible) 0
1400	}
1401	} else {
1402	if { !$_settings(-colormapvisible) } {
1403	SendCmd "heightmap surface 1"
1404	set _settings(-colormapvisible) 1
1405	}
1406	SetCurrentColormap $color
1407	if {$_settings(-colormapdiscrete)} {
1408	set numColors [expr $_settings(-numisolines) + 1]
1409	SendCmd "colormap res $numColors $color"
1410	}
1411	}
1412	StopBufferingCommands
1413	EventuallyRequestLegend
1414	}
1415	"-colormapvisible" {
1416	set bool $_settings($what)
1417	SendCmd "heightmap surface $bool"
1418	}
1419	"-colormapdiscrete" {
1420	set bool $_settings($what)
1421	set numColors [expr $_settings(-numisolines) + 1]
1422	# FIXME: don't use StartBufferingCommands
1423	StartBufferingCommands
1424	if {$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(-lighting)
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 \
1922	"BCGYR" "BCGYR" \
1923	"BGYOR" "BGYOR" \
1924	"blue" "blue" \
1925	"blue-to-brown" "blue-to-brown" \
1926	"blue-to-orange" "blue-to-orange" \
1927	"blue-to-grey" "blue-to-grey" \
1928	"green-to-magenta" "green-to-magenta" \
1929	"greyscale" "greyscale" \
1930	"nanohub" "nanohub" \
1931	"rainbow" "rainbow" \
1932	"spectral" "spectral" \
1933	"ROYGB" "ROYGB" \
1934	"RYGCB" "RYGCB" \
1935	"brown-to-blue" "brown-to-blue" \
1936	"grey-to-blue" "grey-to-blue" \
1937	"orange-to-blue" "orange-to-blue" \
1938	"none" "none"
1939
1940	$itk_component(colormap) value "BCGYR"
1941	bind $inner.colormap <<Value>> \
1942	[itcl::code $this AdjustSetting -colormap]
1943
1944	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1945	itk_component add isolinecolor {
1946	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1947	}
1948	$inner.isolinecolor choices insert end \
1949	"black" "black" \
1950	"blue" "blue" \
1951	"cyan" "cyan" \
1952	"green" "green" \
1953	"grey" "grey" \
1954	"magenta" "magenta" \
1955	"orange" "orange" \
1956	"red" "red" \
1957	"white" "white" \
1958	"none" "none"
1959
1960	$itk_component(isolinecolor) value "black"
1961	bind $inner.isolinecolor <<Value>> \
1962	[itcl::code $this AdjustSetting -isolinecolor]
1963
1964	label $inner.background_l -text "Background Color" -font "Arial 9"
1965	itk_component add background {
1966	Rappture::Combobox $inner.background -width 10 -editable no
1967	}
1968	$inner.background choices insert end \
1969	"black" "black" \
1970	"white" "white" \
1971	"grey" "grey"
1972
1973	$itk_component(background) value "white"
1974	bind $inner.background <<Value>> \
1975	[itcl::code $this AdjustSetting -background]
1976
1977	itk_component add opacity_l {
1978	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1979	} {
1980	ignore -font
1981	}
1982	itk_component add opacity {
1983	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1984	-variable [itcl::scope _settings(-opacity)] \
1985	-showvalue off \
1986	-command [itcl::code $this AdjustSetting -opacity]
1987	}
1988	itk_component add scale_l {
1989	label $inner.scale_l -text "Scale" -font "Arial 9"
1990	} {
1991	ignore -font
1992	}
1993	itk_component add scale {
1994	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1995	-variable [itcl::scope _settings(-heightmapscale)] \
1996	-showvalue off \
1997	-command [itcl::code $this AdjustSetting -heightmapscale]
1998	}
1999	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
2000	itk_component add numisolines {
2001	Rappture::Spinint $inner.numisolines \
2002	-min 0 -max 50 -font "arial 9"
2003	}
2004	$itk_component(numisolines) value $_settings(-numisolines)
2005	bind $itk_component(numisolines) <<Value>> \
2006	[itcl::code $this AdjustSetting -numisolines]
2007
2008	frame $inner.separator1 -height 2 -relief sunken -bd 1
2009	frame $inner.separator2 -height 2 -relief sunken -bd 1
2010
2011	blt::table $inner \
2012	0,0 $inner.field_l -anchor w -pady 2 \
2013	0,1 $inner.field -anchor w -pady 2 -fill x \
2014	1,0 $inner.colormap_l -anchor w -pady 2 \
2015	1,1 $inner.colormap -anchor w -pady 2 -fill x \
2016	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
2017	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
2018	3,0 $inner.background_l -anchor w -pady 2 \
2019	3,1 $inner.background -anchor w -pady 2 -fill x \
2020	4,0 $inner.numisolines_l -anchor w -pady 2 \
2021	4,1 $inner.numisolines -anchor w -pady 2 \
2022	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
2023	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
2024	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
2025	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
2026	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
2027	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
2028	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
2029	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
2030	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
2031	14,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
2032	15,0 $inner.opacity_l -anchor w -pady 2 \
2033	15,1 $inner.opacity -fill x -pady 2 \
2034	16,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
2035	16,1 $inner.scale -fill x -pady 2 -cspan 2 \
2036
2037	blt::table configure $inner r* c* -resize none
2038	blt::table configure $inner r17 c1 -resize expand
2039	}
2040
2041	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
2042
2043	set fg [option get $itk_component(hull) font Font]
2044	#set bfg [option get $itk_component(hull) boldFont Font]
2045
2046	set inner [$itk_component(main) insert end \
2047	-title "Axis Settings" \
2048	-icon [Rappture::icon axis2]]
2049	$inner configure -borderwidth 4
2050
2051	checkbutton $inner.visible \
2052	-text "Axes" \
2053	-variable [itcl::scope _settings(-axisvisible)] \
2054	-command [itcl::code $this AdjustSetting -axisvisible] \
2055	-font "Arial 9"
2056	checkbutton $inner.labels \
2057	-text "Axis Labels" \
2058	-variable [itcl::scope _settings(-axislabels)] \
2059	-command [itcl::code $this AdjustSetting -axislabels] \
2060	-font "Arial 9"
2061	label $inner.grid_l -text "Grid" -font "Arial 9"
2062	checkbutton $inner.xgrid \
2063	-text "X" \
2064	-variable [itcl::scope _settings(-xgrid)] \
2065	-command [itcl::code $this AdjustSetting -xgrid] \
2066	-font "Arial 9"
2067	checkbutton $inner.ygrid \
2068	-text "Y" \
2069	-variable [itcl::scope _settings(-ygrid)] \
2070	-command [itcl::code $this AdjustSetting -ygrid] \
2071	-font "Arial 9"
2072	checkbutton $inner.zgrid \
2073	-text "Z" \
2074	-variable [itcl::scope _settings(-zgrid)] \
2075	-command [itcl::code $this AdjustSetting -zgrid] \
2076	-font "Arial 9"
2077	checkbutton $inner.minorticks \
2078	-text "Minor Ticks" \
2079	-variable [itcl::scope _settings(-axisminorticks)] \
2080	-command [itcl::code $this AdjustSetting -axisminorticks] \
2081	-font "Arial 9"
2082
2083
2084	label $inner.mode_l -text "Mode" -font "Arial 9"
2085
2086	itk_component add axisflymode {
2087	Rappture::Combobox $inner.mode -width 10 -editable no
2088	}
2089	$inner.mode choices insert end \
2090	"static_triad" "static" \
2091	"closest_triad" "closest" \
2092	"furthest_triad" "farthest" \
2093	"outer_edges" "outer"
2094	$itk_component(axisflymode) value "static"
2095	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
2096
2097	blt::table $inner \
2098	0,0 $inner.visible -anchor w -cspan 4 \
2099	1,0 $inner.labels -anchor w -cspan 4 \
2100	2,0 $inner.minorticks -anchor w -cspan 4 \
2101	4,0 $inner.grid_l -anchor w \
2102	4,1 $inner.xgrid -anchor w \
2103	4,2 $inner.ygrid -anchor w \
2104	4,3 $inner.zgrid -anchor w \
2105	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2106	5,1 $inner.mode -fill x -cspan 3
2107
2108	blt::table configure $inner r* c* -resize none
2109	blt::table configure $inner r7 c6 -resize expand
2110	blt::table configure $inner r3 -height 0.125i
2111	}
2112
2113
2114	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2115	set inner [$itk_component(main) insert end \
2116	-title "Camera Settings" \
2117	-icon [Rappture::icon camera]]
2118	$inner configure -borderwidth 4
2119
2120	label $inner.view_l -text "view" -font "Arial 9"
2121	set f [frame $inner.view]
2122	foreach side { front back left right top bottom } {
2123	button $f.$side -image [Rappture::icon view$side] \
2124	-command [itcl::code $this SetOrientation $side]
2125	Rappture::Tooltip::for $f.$side "Change the view to $side"
2126	pack $f.$side -side left
2127	}
2128
2129	blt::table $inner \
2130	0,0 $inner.view_l -anchor e -pady 2 \
2131	0,1 $inner.view -anchor w -pady 2
2132
2133	set labels { qx qy qz qw xpan ypan zoom }
2134	set row 1
2135	foreach tag $labels {
2136	label $inner.${tag}label -text $tag -font "Arial 9"
2137	entry $inner.${tag} -font "Arial 9" -bg white \
2138	-textvariable [itcl::scope _view($tag)]
2139	bind $inner.${tag} <Return> \
2140	[itcl::code $this camera set ${tag}]
2141	bind $inner.${tag} <KP_Enter> \
2142	[itcl::code $this camera set ${tag}]
2143	blt::table $inner \
2144	$row,0 $inner.${tag}label -anchor e -pady 2 \
2145	$row,1 $inner.${tag} -anchor w -pady 2
2146	blt::table configure $inner r$row -resize none
2147	incr row
2148	}
2149	checkbutton $inner.ortho \
2150	-text "Orthographic Projection" \
2151	-variable [itcl::scope _view(ortho)] \
2152	-command [itcl::code $this camera set ortho] \
2153	-font "Arial 9"
2154	blt::table $inner \
2155	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2156	blt::table configure $inner r$row -resize none
2157	incr row
2158
2159	blt::table configure $inner c* r* -resize none
2160	blt::table configure $inner c2 -resize expand
2161	blt::table configure $inner r$row -resize expand
2162	}
2163
2164	#
2165	# camera --
2166	#
2167	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2168	switch -- $option {
2169	"show" {
2170	puts [array get _view]
2171	}
2172	"set" {
2173	set who [lindex $args 0]
2174	set x $_view($who)
2175	set code [catch { string is double $x } result]
2176	if { $code != 0 \|\| !$result } {
2177	return
2178	}
2179	switch -- $who {
2180	"ortho" {
2181	if {$_view(ortho)} {
2182	SendCmd "camera mode ortho"
2183	} else {
2184	SendCmd "camera mode persp"
2185	}
2186	}
2187	"xpan" - "ypan" {
2188	PanCamera
2189	}
2190	"qx" - "qy" - "qz" - "qw" {
2191	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2192	$_arcball quaternion $q
2193	EventuallyRotate $q
2194	}
2195	"zoom" {
2196	SendCmd "camera zoom $_view(zoom)"
2197	}
2198	}
2199	}
2200	}
2201	}
2202
2203	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2204	set bytes ""
2205	foreach dataobj [get] {
2206	foreach comp [$dataobj components] {
2207	set tag $dataobj-$comp
2208	set contents [$dataobj vtkdata $comp]
2209	append bytes "$contents\n"
2210	}
2211	}
2212	return [list .vtk $bytes]
2213	}
2214
2215	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2216	if { [image width $_image(download)] > 0 &&
2217	[image height $_image(download)] > 0 } {
2218	set bytes [$_image(download) data -format "jpeg -quality 100"]
2219	set bytes [Rappture::encoding::decode -as b64 $bytes]
2220	return [list .jpg $bytes]
2221	}
2222	return ""
2223	}
2224
2225	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2226	Rappture::Balloon $popup \
2227	-title "[Rappture::filexfer::label downloadWord] as..."
2228	set inner [$popup component inner]
2229	label $inner.summary -text "" -anchor w
2230	radiobutton $inner.vtk_button -text "VTK data file" \
2231	-variable [itcl::scope _downloadPopup(format)] \
2232	-font "Arial 9 " \
2233	-value vtk
2234	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2235	radiobutton $inner.image_button -text "Image File" \
2236	-variable [itcl::scope _downloadPopup(format)] \
2237	-font "Arial 9 " \
2238	-value image
2239	Rappture::Tooltip::for $inner.image_button \
2240	"Save as digital image."
2241
2242	button $inner.ok -text "Save" \
2243	-highlightthickness 0 -pady 2 -padx 3 \
2244	-command $command \
2245	-compound left \
2246	-image [Rappture::icon download]
2247
2248	button $inner.cancel -text "Cancel" \
2249	-highlightthickness 0 -pady 2 -padx 3 \
2250	-command [list $popup deactivate] \
2251	-compound left \
2252	-image [Rappture::icon cancel]
2253
2254	blt::table $inner \
2255	0,0 $inner.summary -cspan 2 \
2256	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2257	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2258	4,1 $inner.cancel -width .9i -fill y \
2259	4,0 $inner.ok -padx 2 -width .9i -fill y
2260	blt::table configure $inner r3 -height 4
2261	blt::table configure $inner r4 -pady 4
2262	raise $inner.image_button
2263	$inner.vtk_button invoke
2264	return $inner
2265	}
2266
2267	#
2268	# SetObjectStyle --
2269	#
2270	# Set the style of the heightmap/contour object. This gets calls
2271	# for each dataset once as it is loaded. It can overridden by
2272	# the user controls.
2273	#
2274	#
2275	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2276	# Parse style string.
2277	set tag $dataobj-$comp
2278	array set style {
2279	-color BCGYR
2280	-opacity 1.0
2281	-levels 10
2282	}
2283	set stylelist [$dataobj style $comp]
2284	if { $stylelist != "" } {
2285	array set style $stylelist
2286	}
2287	# This is too complicated. We want to set the colormap, number of
2288	# isolines and opacity for the dataset. They can be the default values,
2289	# the style hints loaded with the dataset, or set by user controls. As
2290	# datasets get loaded, they first use the defaults that are overidden
2291	# by the style hints. If the user changes the global controls, then that
2292	# overrides everything else. I don't know what it means when global
2293	# controls are specified as style hints by each dataset. It complicates
2294	# the code to handle aberrant cases.
2295
2296	if { $_changed(-opacity) } {
2297	set style(-opacity) [expr $_settings(-opacity) * 0.01]
2298	}
2299	if { $_changed(-numisolines) } {
2300	set style(-levels) $_settings-(numisolines)
2301	}
2302	if { $_changed(-colormap) } {
2303	set style(-color) $_settings(-colormap)
2304	}
2305	if { $_currentColormap == "" } {
2306	$itk_component(colormap) value $style(-color)
2307	}
2308	if { [info exists style(-stretchtofit)] } {
2309	set _settings(-stretchtofit) $style(-stretchtofit)
2310	AdjustSetting -stretchtofit
2311	}
2312
2313	if { $_currentNumIsolines != $style(-levels) } {
2314	set _currentNumIsolines $style(-levels)
2315	set _settings(-numisolines) $_currentNumIsolines
2316	$itk_component(numisolines) value $_currentNumIsolines
2317	UpdateContourList
2318	DrawLegend
2319	}
2320	SendCmd "outline add $tag"
2321	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2322	SendCmd "outline visible $_settings(-outline) $tag"
2323	set scale [GetHeightmapScale]
2324	SendCmd "[list heightmap add contourlist $_contourList $scale $tag]"
2325	set _comp2scale($tag) $_settings(-heightmapscale)
2326	SendCmd "heightmap edges $_settings(-edges) $tag"
2327	SendCmd "heightmap wireframe $_settings(-wireframe) $tag"
2328	SetCurrentColormap $style(-color)
2329	set color [$itk_component(isolinecolor) value]
2330	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2331	SendCmd "heightmap lighting $_settings(-isheightmap) $tag"
2332	SendCmd "heightmap isolines $_settings(-isolinesvisible) $tag"
2333	SendCmd "heightmap surface $_settings(-colormapvisible) $tag"
2334	SendCmd "heightmap opacity $style(-opacity) $tag"
2335	set _settings(-opacity) [expr $style(-opacity) * 100.0]
2336	}
2337
2338	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2339	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2340	return 0
2341	}
2342	return 1
2343	}
2344
2345	# ----------------------------------------------------------------------
2346	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2347	#
2348	# Invoked automatically whenever the "legend" command comes in from
2349	# the rendering server. Indicates that binary image data with the
2350	# specified <size> will follow.
2351	# ----------------------------------------------------------------------
2352	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2353	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2354	if { [isconnected] } {
2355	set bytes [ReceiveBytes $size]
2356	if { ![info exists _image(legend)] } {
2357	set _image(legend) [image create photo]
2358	}
2359	$_image(legend) configure -data $bytes
2360	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2361	if { [catch {DrawLegend} errs] != 0 } {
2362	global errorInfo
2363	puts stderr "errs=$errs errorInfo=$errorInfo"
2364	}
2365	}
2366	}
2367
2368	#
2369	# DrawLegend --
2370	#
2371	# Draws the legend in the own canvas on the right side of the plot area.
2372	#
2373	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2374	set fname $_curFldName
2375	set c $itk_component(view)
2376	set w [winfo width $c]
2377	set h [winfo height $c]
2378	set font "Arial 8"
2379	set lineht [font metrics $font -linespace]
2380
2381	if { [string match "component*" $fname] } {
2382	set title ""
2383	} else {
2384	if { [info exists _fields($fname)] } {
2385	foreach { title units } $_fields($fname) break
2386	if { $units != "" } {
2387	set title [format "%s (%s)" $title $units]
2388	}
2389	} else {
2390	set title $fname
2391	}
2392	}
2393	set x [expr $w - 2]
2394	if { !$_settings(-legendvisible) } {
2395	$c delete legend
2396	return
2397	}
2398	if { [$c find withtag "legend"] == "" } {
2399	set y 2
2400	# If there's a legend title, create a text item for the title.
2401	$c create text $x $y \
2402	-anchor ne \
2403	-fill $itk_option(-plotforeground) -tags "title legend" \
2404	-font $font
2405	$c create text $x $y \
2406	-anchor ne \
2407	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2408	-font $font
2409	incr y $lineht
2410	$c create image $x $y \
2411	-anchor ne \
2412	-image $_image(legend) -tags "colormap legend"
2413	$c create rectangle $x $y 1 1 \
2414	-fill "" -outline "" -tags "sensor legend"
2415	$c create text $x [expr {$h-2}] \
2416	-anchor se \
2417	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2418	-font $font
2419	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2420	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2421	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2422	}
2423	$c delete isoline
2424	set x2 $x
2425	set iw [image width $_image(legend)]
2426	set ih [image height $_image(legend)]
2427	set x1 [expr $x2 - ($iw*12)/10]
2428	set color [$itk_component(isolinecolor) value]
2429
2430	# Draw the isolines on the legend.
2431	array unset _isolines
2432	if { $color != "none" && [info exists _limits($_curFldName)] &&
2433	$_settings(-isolinesvisible) && $_currentNumIsolines > 0 } {
2434
2435	foreach { vmin vmax } $_limits($_curFldName) break
2436	set range [expr double($vmax - $vmin)]
2437	if { $range <= 0.0 } {
2438	set range 1.0; # Min is greater or equal to max.
2439	}
2440	set tags "isoline legend"
2441	set offset [expr 2 + $lineht]
2442	if { $title != "" } {
2443	incr offset $lineht
2444	}
2445	foreach value $_contourList {
2446	set norm [expr 1.0 - (($value - $vmin) / $range)]
2447	set y1 [expr int(round(($norm * $ih) + $offset))]
2448	for { set off 0 } { $off < 3 } { incr off } {
2449	set _isolines([expr $y1 + $off]) $value
2450	set _isolines([expr $y1 - $off]) $value
2451	}
2452	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2453	}
2454	}
2455
2456	$c bind title <ButtonPress> [itcl::code $this Combo post]
2457	$c bind title <Enter> [itcl::code $this Combo activate]
2458	$c bind title <Leave> [itcl::code $this Combo deactivate]
2459	# Reset the item coordinates according the current size of the plot.
2460	if { [info exists _limits($_curFldName)] } {
2461	foreach { vmin vmax } $_limits($_curFldName) break
2462	$c itemconfigure vmin -text [format %g $vmin]
2463	$c itemconfigure vmax -text [format %g $vmax]
2464	}
2465	set y 2
2466	# If there's a legend title, move the title to the correct position
2467	if { $title != "" } {
2468	$c itemconfigure title -text $title
2469	$c coords title $x $y
2470	incr y $lineht
2471	}
2472	$c coords vmax $x $y
2473	incr y $lineht
2474	$c coords colormap $x $y
2475	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2476	$c raise sensor
2477	$c coords vmin $x [expr {$h - 2}]
2478	}
2479
2480	#
2481	# EnterLegend --
2482	#
2483	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2484	SetLegendTip $x $y
2485	}
2486
2487	#
2488	# MotionLegend --
2489	#
2490	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2491	Rappture::Tooltip::tooltip cancel
2492	set c $itk_component(view)
2493	set cw [winfo width $c]
2494	set ch [winfo height $c]
2495	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2496	SetLegendTip $x $y
2497	}
2498	}
2499
2500	#
2501	# LeaveLegend --
2502	#
2503	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2504	Rappture::Tooltip::tooltip cancel
2505	.rappturetooltip configure -icon ""
2506	}
2507
2508	#
2509	# SetLegendTip --
2510	#
2511	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2512	set fname $_curFldName
2513	set c $itk_component(view)
2514	set w [winfo width $c]
2515	set h [winfo height $c]
2516	set font "Arial 8"
2517	set lineht [font metrics $font -linespace]
2518
2519	set ih [image height $_image(legend)]
2520	# Subtract off the offset of the color ramp from the top of the canvas
2521	set iy [expr $y - ($lineht + 2)]
2522
2523	if { [string match "component*" $fname] } {
2524	set title ""
2525	} else {
2526	if { [info exists _fields($fname)] } {
2527	foreach { title units } $_fields($fname) break
2528	if { $units != "" } {
2529	set title [format "%s (%s)" $title $units]
2530	}
2531	} else {
2532	set title $fname
2533	}
2534	}
2535	# If there's a legend title, increase the offset by the line height.
2536	if { $title != "" } {
2537	incr iy -$lineht
2538	}
2539
2540	# Make a swatch of the selected color
2541	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2542	return
2543	}
2544
2545	if { ![info exists _image(swatch)] } {
2546	set _image(swatch) [image create photo -width 24 -height 24]
2547	}
2548	set color [eval format "\#%02x%02x%02x" $pixel]
2549	$_image(swatch) put black -to 0 0 23 23
2550	$_image(swatch) put $color -to 1 1 22 22
2551
2552	# Compute the value of the point
2553	if { [info exists _limits($fname)] } {
2554	foreach { vmin vmax } $_limits($fname) break
2555	set t [expr 1.0 - (double($iy) / double($ih-1))]
2556	set value [expr $t * ($vmax - $vmin) + $vmin]
2557	} else {
2558	set value 0.0
2559	}
2560	set tipx [expr $x + 15]
2561	set tipy [expr $y - 5]
2562	.rappturetooltip configure -icon $_image(swatch)
2563	if { [info exists _isolines($y)] } {
2564	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2565	} else {
2566	Rappture::Tooltip::text $c [format "$title %g" $value]
2567	}
2568	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2569	}
2570
2571	# ----------------------------------------------------------------------
2572	# USAGE: _dropdown post
2573	# USAGE: _dropdown unpost
2574	# USAGE: _dropdown select
2575	#
2576	# Used internally to handle the dropdown list for this combobox. The
2577	# post/unpost options are invoked when the list is posted or unposted
2578	# to manage the relief of the controlling button. The select option
2579	# is invoked whenever there is a selection from the list, to assign
2580	# the value back to the gauge.
2581	# ----------------------------------------------------------------------
2582	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2583	set c $itk_component(view)
2584	switch -- $option {
2585	post {
2586	foreach { x1 y1 x2 y2 } [$c bbox title] break
2587	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2588	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2589	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2590	tk_popup $itk_component(fieldmenu) $x $y
2591	}
2592	activate {
2593	$c itemconfigure title -fill red
2594	}
2595	deactivate {
2596	$c itemconfigure title -fill $itk_option(-plotforeground)
2597	}
2598	invoke {
2599	$itk_component(field) value $_curFldLabel
2600	AdjustSetting -field
2601	}
2602	default {
2603	error "bad option \"$option\": should be post, unpost, select"
2604	}
2605	}
2606	}
2607
2608	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2609	if { $_settings(-isheightmap) } {
2610	set val $_settings(-heightmapscale)
2611	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2612	return $sval
2613	}
2614	return 0
2615	}
2616
2617	itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2618	array set positions {
2619	front "0.707107 0.707107 0 0"
2620	back "0 0 0.707107 0.707107"
2621	left "0.5 0.5 -0.5 -0.5"
2622	right "0.5 0.5 0.5 0.5"
2623	top "1 0 0 0"
2624	bottom "0 1 0 0"
2625	}
2626	foreach name { qw qx qy qz } value $positions($side) {
2627	set _view($name) $value
2628	}
2629	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2630	$_arcball quaternion $q
2631	SendCmd "camera orient $q"
2632	SendCmd "camera reset"
2633	set _view(xpan) 0
2634	set _view(ypan) 0
2635	set _view(zoom) 1.0
2636	}
2637
2638	itcl::body Rappture::VtkHeightmapViewer::UpdateContourList {} {
2639	if {$_currentNumIsolines == 0} {
2640	set _contourList ""
2641	return
2642	}
2643	if { ![info exists _limits($_curFldName)] } {
2644	return
2645	}
2646	foreach { vmin vmax } $_limits($_curFldName) break
2647	set v [blt::vector create \#auto]
2648	$v seq $vmin $vmax [expr $_currentNumIsolines+2]
2649	$v delete end 0
2650	set _contourList [$v range 0 end]
2651	blt::vector destroy $v
2652	}

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