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source: branches/1.6/gui/scripts/vtkheightmapviewer.tcl @ 6155

Last change on this file since 6155 was 6155, checked in by ldelgass, 8 years ago
merge viewer cleanups from trunk
File size: 90.1 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkheightmapviewer - Vtk heightmap viewer
4	#
5	# It connects to the Vtkvis server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2016 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkHeightmapViewer.width 4i widgetDefault
19	option add VtkHeightmapViewercursor crosshair widgetDefault
20	option add *VtkHeightmapViewer.height 4i widgetDefault
21	option add *VtkHeightmapViewer.foreground black widgetDefault
22	option add *VtkHeightmapViewer.controlBackground gray widgetDefault
23	option add *VtkHeightmapViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkHeightmapViewer.plotBackground black widgetDefault
25	option add *VtkHeightmapViewer.plotForeground white widgetDefault
26	option add *VtkHeightmapViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkHeightmapViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkHeightmapViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkHeightmapViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40	itk_option define -mode mode Mode "contour"
41
42	constructor { args } {
43	Rappture::VisViewer::constructor
44	} {
45	# defined below
46	}
47	destructor {
48	# defined below
49	}
50	public proc SetServerList { namelist } {
51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
52	}
53	public method add {dataobj {settings ""}}
54	public method camera {option args}
55	public method delete {args}
56	public method disconnect {}
57	public method download {option args}
58	public method get {args}
59	public method isconnected {}
60	public method parameters {title args} {
61	# do nothing
62	}
63	public method scale {args}
64
65	# The following methods are only used by this class.
66	private method AdjustSetting {what {value ""}}
67	private method BuildAxisTab {}
68	private method BuildCameraTab {}
69	private method BuildColormap { name }
70	private method BuildContourTab {}
71	private method BuildDownloadPopup { widget command }
72	private method CameraReset {}
73	private method Combo { option }
74	private method Connect {}
75	private method CurrentDatasets {args}
76	private method Disconnect {}
77	private method DoResize {}
78	private method DoRotate {}
79	private method DrawLegend {}
80	private method EnterLegend { x y }
81	private method EventuallyRequestLegend {}
82	private method EventuallyResize { w h }
83	private method EventuallyRotate { q }
84	private method GetHeightmapScale {}
85	private method GetImage { args }
86	private method GetVtkData { args }
87	private method InitSettings { args }
88	private method IsValidObject { dataobj }
89	private method LeaveLegend {}
90	private method MotionLegend { x y }
91	private method Pan {option x y}
92	private method PanCamera {}
93	private method Pick {x y}
94	private method QuaternionToView { q } {
95	foreach { _view(-qw) _view(-qx) _view(-qy) _view(-qz) } $q break
96	}
97	private method Rebuild {}
98	private method ReceiveDataset { args }
99	private method ReceiveImage { args }
100	private method ReceiveLegend { colormap title min max size }
101	private method RequestLegend {}
102	private method ResetAxes {}
103	private method Rotate {option x y}
104	private method SetCurrentColormap { color }
105	private method SetLegendTip { x y }
106	private method SetObjectStyle { dataobj comp }
107	private method SetOrientation { side }
108	private method UpdateContourList {}
109	private method ViewToQuaternion {} {
110	return [list $_view(-qw) $_view(-qx) $_view(-qy) $_view(-qz)]
111	}
112	private method Zoom {option}
113
114	private variable _arcball ""
115	private variable _dlist "" ; # list of data objects
116	private variable _obj2ovride ; # maps dataobj => style override
117	private variable _comp2scale; # maps dataset to the heightmap scale.
118	private variable _datasets ; # contains all the dataobj-component
119	; # datasets in the server
120	private variable _colormaps ; # contains all the colormaps
121	; # in the server.
122
123	# The name of the current colormap used. The colormap is global to all
124	# heightmaps displayed.
125	private variable _currentColormap ""
126	private variable _currentNumIsolines -1
127
128	private variable _maxScale 100; # This is the # of times the x-axis
129	# and y-axis ranges can differ before
130	# automatically turning on
131	# -stretchtofit
132
133	private variable _click ; # info used for rotate operations
134	private variable _limits ; # Holds overall limits for all dataobjs
135	# using the viewer.
136	private variable _view ; # view params for 3D view
137	private variable _settings
138	private variable _changed
139	private variable _reset 1; # Connection to server has been reset.
140
141	private variable _first "" ; # This is the topmost dataset.
142	private variable _start 0
143	private variable _isolines
144	private variable _contourList ""
145	private variable _width 0
146	private variable _height 0
147	private variable _legendWidth 0
148	private variable _legendHeight 0
149	private variable _resizePending 0
150	private variable _legendPending 0
151	private variable _rotatePending 0
152	private variable _fields
153	private variable _curFldName ""
154	private variable _curFldLabel ""
155	private variable _colorMode "scalar";# Mode of colormap (vmag or scalar)
156
157	private common _downloadPopup; # download options from popup
158	private common _hardcopy
159	}
160
161	itk::usual VtkHeightmapViewer {
162	keep -background -foreground -cursor -font
163	keep -plotbackground -plotforeground -mode
164	}
165
166	# ----------------------------------------------------------------------
167	# CONSTRUCTOR
168	# ----------------------------------------------------------------------
169	itcl::body Rappture::VtkHeightmapViewer::constructor {args} {
170	set _serverType "vtkvis"
171
172	#DebugOn
173	EnableWaitDialog 900
174
175	# Rebuild event
176	$_dispatcher register !rebuild
177	$_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
178
179	# Resize event
180	$_dispatcher register !resize
181	$_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
182
183	# Legend event
184	$_dispatcher register !legend
185	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
186
187	# Rotate event
188	$_dispatcher register !rotate
189	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
190
191	#
192	# Populate parser with commands handle incoming requests
193	#
194	$_parser alias image [itcl::code $this ReceiveImage]
195	$_parser alias dataset [itcl::code $this ReceiveDataset]
196	$_parser alias legend [itcl::code $this ReceiveLegend]
197
198	# Create image for legend colorbar.
199	set _image(legend) [image create photo]
200
201	# Initialize the view to some default parameters.
202	array set _view {
203	-ortho 0
204	-qw 0.36
205	-qx 0.25
206	-qy 0.50
207	-qz 0.70
208	-xpan 0
209	-ypan 0
210	-zoom 1.0
211	}
212	set _arcball [blt::arcball create 100 100]
213	$_arcball quaternion [ViewToQuaternion]
214
215	array set _settings {
216	-axisflymode "static"
217	-axislabels 1
218	-axisminorticks 1
219	-axisvisible 1
220	-colormap BCGYR
221	-colormapdiscrete 0
222	-colormapvisible 1
223	-edges 0
224	-field "Default"
225	-heightmapscale 50
226	-isheightmap 0
227	-isolinecolor black
228	-isolinesvisible 1
229	-legendvisible 1
230	-lighting 1
231	-numisolines 10
232	-opacity 100
233	-outline 0
234	-savelighting 1
235	-saveopacity 100
236	-saveoutline 0
237	-stretchtofit 0
238	-wireframe 0
239	-xgrid 0
240	-ygrid 0
241	-zgrid 0
242	}
243	array set _changed {
244	-colormap 0
245	-numisolines 0
246	-opacity 0
247	}
248	itk_component add view {
249	canvas $itk_component(plotarea).view \
250	-highlightthickness 0 -borderwidth 0
251	} {
252	usual
253	ignore -highlightthickness -borderwidth -background
254	}
255
256	itk_component add fieldmenu {
257	menu $itk_component(plotarea).menu \
258	-relief flat \
259	-tearoff 0
260	} {
261	usual
262	ignore -background -foreground -relief -tearoff
263	}
264	set c $itk_component(view)
265	bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
266	bind $c <4> [itcl::code $this Zoom in 0.25]
267	bind $c <5> [itcl::code $this Zoom out 0.25]
268	bind $c <KeyPress-Left> [list %W xview scroll 10 units]
269	bind $c <KeyPress-Right> [list %W xview scroll -10 units]
270	bind $c <KeyPress-Up> [list %W yview scroll 10 units]
271	bind $c <KeyPress-Down> [list %W yview scroll -10 units]
272	bind $c <Enter> "focus %W"
273	bind $c <Control-F1> [itcl::code $this ToggleConsole]
274
275	# Fix the scrollregion in case we go off screen
276	$c configure -scrollregion [$c bbox all]
277
278	set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
279	set _map(cwidth) -1
280	set _map(cheight) -1
281	set _map(zoom) 1.0
282	set _map(original) ""
283
284	set f [$itk_component(main) component controls]
285	itk_component add reset {
286	button $f.reset -borderwidth 1 -padx 1 -pady 1 \
287	-highlightthickness 0 \
288	-image [Rappture::icon reset-view] \
289	-command [itcl::code $this CameraReset]
290	} {
291	usual
292	ignore -highlightthickness
293	}
294	pack $itk_component(reset) -side top -padx 2 -pady { 2 0 }
295	Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
296
297	itk_component add zoomin {
298	button $f.zin -borderwidth 1 -padx 1 -pady 1 \
299	-highlightthickness 0 \
300	-image [Rappture::icon zoom-in] \
301	-command [itcl::code $this Zoom in]
302	} {
303	usual
304	ignore -highlightthickness
305	}
306	pack $itk_component(zoomin) -side top -padx 2 -pady { 2 0 }
307	Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
308
309	itk_component add zoomout {
310	button $f.zout -borderwidth 1 -padx 1 -pady 1 \
311	-highlightthickness 0 \
312	-image [Rappture::icon zoom-out] \
313	-command [itcl::code $this Zoom out]
314	} {
315	usual
316	ignore -highlightthickness
317	}
318	pack $itk_component(zoomout) -side top -padx 2 -pady { 2 0 }
319	Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
320
321	itk_component add mode {
322	Rappture::PushButton $f.mode \
323	-onimage [Rappture::icon surface] \
324	-offimage [Rappture::icon surface] \
325	-variable [itcl::scope _settings(-isheightmap)] \
326	-command [itcl::code $this AdjustSetting -isheightmap] \
327	}
328	Rappture::Tooltip::for $itk_component(mode) \
329	"Toggle the surface/contour on/off"
330	pack $itk_component(mode) -padx 2 -pady { 2 0 }
331
332	itk_component add stretchtofit {
333	Rappture::PushButton $f.stretchtofit \
334	-onimage [Rappture::icon stretchtofit] \
335	-offimage [Rappture::icon stretchtofit] \
336	-variable [itcl::scope _settings(-stretchtofit)] \
337	-command [itcl::code $this AdjustSetting -stretchtofit] \
338	}
339	Rappture::Tooltip::for $itk_component(stretchtofit) \
340	"Stretch plot to fit window on/off"
341	pack $itk_component(stretchtofit) -padx 2 -pady 2
342
343	if { [catch {
344	BuildContourTab
345	BuildAxisTab
346	BuildCameraTab
347	} errs] != 0 } {
348	global errorInfo
349	puts stderr "errs=$errs errorInfo=$errorInfo"
350	}
351
352	# Hack around the Tk panewindow. The problem is that the requested
353	# size of the 3d view isn't set until an image is retrieved from
354	# the server. So the panewindow uses the tiny size.
355	set w 10000
356	pack forget $itk_component(view)
357	blt::table $itk_component(plotarea) \
358	0,0 $itk_component(view) -fill both -reqwidth $w
359	blt::table configure $itk_component(plotarea) c1 -resize none
360
361	# Bindings for panning via mouse
362	bind $itk_component(view) <ButtonPress-2> \
363	[itcl::code $this Pan click %x %y]
364	bind $itk_component(view) <B2-Motion> \
365	[itcl::code $this Pan drag %x %y]
366	bind $itk_component(view) <ButtonRelease-2> \
367	[itcl::code $this Pan release %x %y]
368
369	#bind $itk_component(view) <ButtonRelease-3> \
370	# [itcl::code $this Pick %x %y]
371
372	# Bindings for panning via keyboard
373	bind $itk_component(view) <KeyPress-Left> \
374	[itcl::code $this Pan set -10 0]
375	bind $itk_component(view) <KeyPress-Right> \
376	[itcl::code $this Pan set 10 0]
377	bind $itk_component(view) <KeyPress-Up> \
378	[itcl::code $this Pan set 0 -10]
379	bind $itk_component(view) <KeyPress-Down> \
380	[itcl::code $this Pan set 0 10]
381	bind $itk_component(view) <Shift-KeyPress-Left> \
382	[itcl::code $this Pan set -2 0]
383	bind $itk_component(view) <Shift-KeyPress-Right> \
384	[itcl::code $this Pan set 2 0]
385	bind $itk_component(view) <Shift-KeyPress-Up> \
386	[itcl::code $this Pan set 0 -2]
387	bind $itk_component(view) <Shift-KeyPress-Down> \
388	[itcl::code $this Pan set 0 2]
389
390	# Bindings for zoom via keyboard
391	bind $itk_component(view) <KeyPress-Prior> \
392	[itcl::code $this Zoom out]
393	bind $itk_component(view) <KeyPress-Next> \
394	[itcl::code $this Zoom in]
395
396	bind $itk_component(view) <Enter> "focus $itk_component(view)"
397
398	if {[string equal "x11" [tk windowingsystem]]} {
399	# Bindings for zoom via mouse
400	bind $itk_component(view) <4> [itcl::code $this Zoom out]
401	bind $itk_component(view) <5> [itcl::code $this Zoom in]
402	}
403
404	set _image(download) [image create photo]
405	eval itk_initialize $args
406	Connect
407	}
408
409	# ----------------------------------------------------------------------
410	# DESTRUCTOR
411	# ----------------------------------------------------------------------
412	itcl::body Rappture::VtkHeightmapViewer::destructor {} {
413	Disconnect
414	image delete $_image(plot)
415	image delete $_image(download)
416	catch { blt::arcball destroy $_arcball }
417	}
418
419	itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
420	if { $_width < 2 } {
421	set _width 500
422	}
423	if { $_height < 2 } {
424	set _height 500
425	}
426	set _start [clock clicks -milliseconds]
427	SendCmd "screen size [expr $_width - 20] $_height"
428
429	set font "Arial 8"
430	set lh [font metrics $font -linespace]
431	set h [expr {$_height - 2 * ($lh + 2)}]
432	if { $h != $_legendHeight } {
433	EventuallyRequestLegend
434	} else {
435	DrawLegend
436	}
437	set _resizePending 0
438	}
439
440	itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
441	SendCmd "camera orient [ViewToQuaternion]"
442	set _rotatePending 0
443	}
444
445	itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
446	if { !$_legendPending } {
447	set _legendPending 1
448	$_dispatcher event -idle !legend
449	}
450	}
451
452	itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
453	set _width $w
454	set _height $h
455	$_arcball resize $w $h
456	if { !$_resizePending } {
457	set _resizePending 1
458	$_dispatcher event -after 250 !resize
459	}
460	}
461
462	set rotate_delay 100
463
464	itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
465	QuaternionToView $q
466	if { !$_rotatePending } {
467	set _rotatePending 1
468	global rotate_delay
469	$_dispatcher event -after $rotate_delay !rotate
470	}
471	}
472
473	# ----------------------------------------------------------------------
474	# USAGE: add <dataobj> ?<settings>?
475	#
476	# Clients use this to add a data object to the plot. The optional
477	# <settings> are used to configure the plot. Allowed settings are
478	# -color, -brightness, -width, -linestyle, and -raise.
479	# ----------------------------------------------------------------------
480	itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
481	if { ![$dataobj isvalid] } {
482	return; # Object doesn't contain valid data.
483	}
484	array set params {
485	-color auto
486	-width 1
487	-linestyle solid
488	-brightness 0
489	-raise 0
490	-description ""
491	-param ""
492	-type ""
493	}
494	array set params $settings
495	set params(-description) ""
496	set params(-param) ""
497	array set params $settings
498
499	if {$params(-color) == "auto" \|\| $params(-color) == "autoreset"} {
500	# can't handle -autocolors yet
501	set params(-color) white
502	}
503	set pos [lsearch -exact $_dlist $dataobj]
504	if {$pos < 0} {
505	lappend _dlist $dataobj
506	}
507	set _obj2ovride($dataobj-color) $params(-color)
508	set _obj2ovride($dataobj-width) $params(-width)
509	set _obj2ovride($dataobj-raise) $params(-raise)
510	$_dispatcher event -idle !rebuild
511	}
512
513
514	# ----------------------------------------------------------------------
515	# USAGE: delete ?<dataobj1> <dataobj2> ...?
516	#
517	# Clients use this to delete a dataobj from the plot. If no dataobjs
518	# are specified, then all dataobjs are deleted. No data objects are
519	# deleted. They are only removed from the display list.
520	# ----------------------------------------------------------------------
521	itcl::body Rappture::VtkHeightmapViewer::delete {args} {
522	if { [llength $args] == 0} {
523	set args $_dlist
524	}
525	# Delete all specified dataobjs
526	set changed 0
527	foreach dataobj $args {
528	set pos [lsearch -exact $_dlist $dataobj]
529	if { $pos < 0 } {
530	continue; # Don't know anything about it.
531	}
532	# Remove it from the dataobj list.
533	set _dlist [lreplace $_dlist $pos $pos]
534	array unset _obj2ovride $dataobj-*
535	array unset _settings $dataobj-*
536	set changed 1
537	}
538	# If anything changed, then rebuild the plot
539	if { $changed } {
540	$_dispatcher event -idle !rebuild
541	}
542	}
543
544	# ----------------------------------------------------------------------
545	# USAGE: get ?-objects?
546	# USAGE: get ?-visible?
547	# USAGE: get ?-image view?
548	#
549	# Clients use this to query the list of objects being plotted, in
550	# order from bottom to top of this result. The optional "-image"
551	# flag can also request the internal images being shown.
552	# ----------------------------------------------------------------------
553	itcl::body Rappture::VtkHeightmapViewer::get {args} {
554	if {[llength $args] == 0} {
555	set args "-objects"
556	}
557	set op [lindex $args 0]
558	switch -- $op {
559	"-objects" {
560	# put the dataobj list in order according to -raise options
561	set dlist {}
562	foreach dataobj $_dlist {
563	if { ![IsValidObject $dataobj] } {
564	continue
565	}
566	if {[info exists _obj2ovride($dataobj-raise)] &&
567	$_obj2ovride($dataobj-raise)} {
568	set dlist [linsert $dlist 0 $dataobj]
569	} else {
570	lappend dlist $dataobj
571	}
572	}
573	return $dlist
574	}
575	"-visible" {
576	set dlist {}
577	foreach dataobj $_dlist {
578	if { ![IsValidObject $dataobj] } {
579	continue
580	}
581	if { ![info exists _obj2ovride($dataobj-raise)] } {
582	# No setting indicates that the object isn't visible.
583	continue
584	}
585	# Otherwise use the -raise parameter to put the object to
586	# the front of the list.
587	if { $_obj2ovride($dataobj-raise) } {
588	set dlist [linsert $dlist 0 $dataobj]
589	} else {
590	lappend dlist $dataobj
591	}
592	}
593	return $dlist
594	}
595	-image {
596	if {[llength $args] != 2} {
597	error "wrong # args: should be \"get -image view\""
598	}
599	switch -- [lindex $args end] {
600	view {
601	return $_image(plot)
602	}
603	default {
604	error "bad image name \"[lindex $args end]\": should be view"
605	}
606	}
607	}
608	default {
609	error "bad option \"$op\": should be -objects or -image"
610	}
611	}
612	}
613
614	#
615	# scale --
616	#
617	# This gets called either incrementally as new simulations are
618	# added or all at once as a sequence of heightmaps.
619	# This accounts for all objects--even those not showing on the
620	# screen. Because of this, the limits are appropriate for all
621	# objects as the user scans through data in the ResultSet viewer.
622	#
623	itcl::body Rappture::VtkHeightmapViewer::scale {args} {
624	foreach dataobj $args {
625	if { ![$dataobj isvalid] } {
626	continue; # Object doesn't contain valid data.
627	}
628	foreach axis { x y } {
629	set units [$dataobj hints ${axis}units]
630	set found($units) 1
631	set lim [$dataobj limits $axis]
632	if { ![info exists _limits($axis)] } {
633	set _limits($axis) $lim
634	continue
635	}
636	foreach {min max} $lim break
637	foreach {amin amax} $_limits($axis) break
638	if { $amin > $min } {
639	set amin $min
640	}
641	if { $amax < $max } {
642	set amax $max
643	}
644	set _limits($axis) [list $amin $amax]
645	}
646	foreach { fname lim } [$dataobj fieldlimits] {
647	if { ![info exists _limits($fname)] } {
648	set _limits($fname) $lim
649	continue
650	}
651	foreach {min max} $lim break
652	foreach {fmin fmax} $_limits($fname) break
653	if { $fmin > $min } {
654	set fmin $min
655	}
656	if { $fmax < $max } {
657	set fmax $max
658	}
659	set _limits($fname) [list $fmin $fmax]
660	}
661	}
662	if { [array size found] > 1 } {
663	set _settings(-stretchtofit) 1
664	} else {
665	# Check if the range of the x and y axes requires that we stretch
666	# the contour to fit the plotting area. This can happen when the
667	# x and y scales differ greatly (> 100x)
668	foreach {xmin xmax} $_limits(x) break
669	foreach {ymin ymax} $_limits(y) break
670	if { (($xmax - $xmin) > (($ymax -$ymin) * $_maxScale)) \|\|
671	((($xmax - $xmin) * $_maxScale) < ($ymax -$ymin)) } {
672	set _settings(-stretchtofit) 1
673	}
674	}
675	}
676
677	# ----------------------------------------------------------------------
678	# USAGE: download coming
679	# USAGE: download controls <downloadCommand>
680	# USAGE: download now
681	#
682	# Clients use this method to create a downloadable representation
683	# of the plot. Returns a list of the form {ext string}, where
684	# "ext" is the file extension (indicating the type of data) and
685	# "string" is the data itself.
686	# ----------------------------------------------------------------------
687	itcl::body Rappture::VtkHeightmapViewer::download {option args} {
688	switch $option {
689	coming {
690	if {[catch {
691	blt::winop snap $itk_component(plotarea) $_image(download)
692	}]} {
693	$_image(download) configure -width 1 -height 1
694	$_image(download) put #000000
695	}
696	}
697	controls {
698	set popup .vtkviewerdownload
699	if { ![winfo exists .vtkviewerdownload] } {
700	set inner [BuildDownloadPopup $popup [lindex $args 0]]
701	} else {
702	set inner [$popup component inner]
703	}
704	set _downloadPopup(image_controls) $inner.image_frame
705	set num [llength [get]]
706	set num [expr {($num == 1) ? "1 result" : "$num results"}]
707	set word [Rappture::filexfer::label downloadWord]
708	$inner.summary configure -text "$word $num in the following format:"
709	update idletasks ;# Fix initial sizes
710	return $popup
711	}
712	now {
713	set popup .vtkviewerdownload
714	if {[winfo exists .vtkviewerdownload]} {
715	$popup deactivate
716	}
717	switch -- $_downloadPopup(format) {
718	"image" {
719	return [$this GetImage [lindex $args 0]]
720	}
721	"vtk" {
722	return [$this GetVtkData [lindex $args 0]]
723	}
724	}
725	return ""
726	}
727	default {
728	error "bad option \"$option\": should be coming, controls, now"
729	}
730	}
731	}
732
733	# ----------------------------------------------------------------------
734	# USAGE: Connect ?<host:port>,<host:port>...?
735	#
736	# Clients use this method to establish a connection to a new
737	# server, or to reestablish a connection to the previous server.
738	# Any existing connection is automatically closed.
739	# ----------------------------------------------------------------------
740	itcl::body Rappture::VtkHeightmapViewer::Connect {} {
741	global readyForNextFrame
742	set readyForNextFrame 1
743	set _hosts [GetServerList "vtkvis"]
744	if { "" == $_hosts } {
745	return 0
746	}
747	set _reset 1
748	set result [VisViewer::Connect $_hosts]
749	if { $result } {
750	if { $_reportClientInfo } {
751	# Tell the server the viewer, hub, user and session.
752	# Do this immediately on connect before buffering any commands
753	global env
754
755	set info {}
756	set user "???"
757	if { [info exists env(USER)] } {
758	set user $env(USER)
759	}
760	set session "???"
761	if { [info exists env(SESSION)] } {
762	set session $env(SESSION)
763	}
764	lappend info "version" "$Rappture::version"
765	lappend info "build" "$Rappture::build"
766	lappend info "svnurl" "$Rappture::svnurl"
767	lappend info "installdir" "$Rappture::installdir"
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 server.
802	#
803	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
804	VisViewer::Disconnect
805
806	$_dispatcher cancel !rebuild
807	$_dispatcher cancel !resize
808	$_dispatcher cancel !rotate
809	$_dispatcher cancel !legend
810	# disconnected -- no more data sitting on server
811	array unset _datasets
812	array unset _colormaps
813	global readyForNextFrame
814	set readyForNextFrame 1
815	}
816
817	# ----------------------------------------------------------------------
818	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
819	#
820	# Invoked automatically whenever the "image" command comes in from
821	# the rendering server. Indicates that binary image data with the
822	# specified <size> will follow.
823	# ----------------------------------------------------------------------
824	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
825	global readyForNextFrame
826	set readyForNextFrame 1
827	array set info {
828	-token "???"
829	-bytes 0
830	-type image
831	}
832	array set info $args
833	set bytes [ReceiveBytes $info(-bytes)]
834	if { $info(-type) == "image" } {
835	if 0 {
836	set f [open "last.ppm" "w"]
837	fconfigure $f -encoding binary
838	puts -nonewline $f $bytes
839	close $f
840	}
841	$_image(plot) configure -data $bytes
842	set time [clock seconds]
843	set date [clock format $time]
844	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
845	if { $_start > 0 } {
846	set finish [clock clicks -milliseconds]
847	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
848	set _start 0
849	}
850	} elseif { $info(type) == "print" } {
851	set tag $this-print-$info(-token)
852	set _hardcopy($tag) $bytes
853	}
854	}
855
856	#
857	# ReceiveDataset --
858	#
859	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
860	if { ![isconnected] } {
861	return
862	}
863	set option [lindex $args 0]
864	switch -- $option {
865	"scalar" {
866	set option [lindex $args 1]
867	switch -- $option {
868	"world" {
869	foreach { x y z value tag } [lrange $args 2 end] break
870	}
871	"pixel" {
872	foreach { x y value tag } [lrange $args 2 end] break
873	}
874	}
875	}
876	"vector" {
877	set option [lindex $args 1]
878	switch -- $option {
879	"world" {
880	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
881	}
882	"pixel" {
883	foreach { x y vx vy vz tag } [lrange $args 2 end] break
884	}
885	}
886	}
887	"names" {
888	foreach { name } [lindex $args 1] {
889	#puts stderr "Dataset: $name"
890	}
891	}
892	default {
893	error "unknown dataset option \"$option\" from server"
894	}
895	}
896	}
897
898	# ----------------------------------------------------------------------
899	# USAGE: Rebuild
900	#
901	# Called automatically whenever something changes that affects the
902	# data in the widget. Clears any existing data and rebuilds the
903	# widget to display new data.
904	# ----------------------------------------------------------------------
905	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
906	set w [winfo width $itk_component(view)]
907	set h [winfo height $itk_component(view)]
908	if { $w < 2 \|\| $h < 2 } {
909	update
910	$_dispatcher event -idle !rebuild
911	return
912	}
913
914	# Turn on buffering of commands to the server. We don't want to
915	# be preempted by a server disconnect/reconnect (which automatically
916	# generates a new call to Rebuild).
917	StartBufferingCommands
918
919	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
920	set _width $w
921	set _height $h
922	$_arcball resize $w $h
923	DoResize
924	if { $_settings(-stretchtofit) } {
925	AdjustSetting -stretchtofit
926	}
927	}
928	if { $_reset } {
929	#
930	# Reset the camera and other view parameters
931	#
932	InitSettings -isheightmap -background
933
934	# Setting a custom exponent and label format for axes is causing
935	# a problem with rounding. Near zero ticks aren't rounded by
936	# the %g format. The VTK CubeAxes seem to currently work best
937	# when allowed to automatically set the exponent and precision
938	# based on the axis ranges. This does tend to result in less
939	# visual clutter, so I think it is best to use the automatic
940	# settings by default. We can test more fine-grained
941	# controls on the axis settings tab if necessary.
942	# -Leif
943	#SendCmd "axis exp 0 0 0 1"
944
945	SendCmd "axis lrot z 90"
946	$_arcball quaternion [ViewToQuaternion]
947	if {$_settings(-isheightmap) } {
948	if { $_view(-ortho)} {
949	SendCmd "camera mode ortho"
950	} else {
951	SendCmd "camera mode persp"
952	}
953	DoRotate
954	SendCmd "camera reset"
955	}
956	PanCamera
957	StopBufferingCommands
958	SendCmd "imgflush"
959	StartBufferingCommands
960	}
961
962	set _first ""
963	# Start off with no datasets are visible.
964	SendCmd "dataset visible 0"
965	set scale [GetHeightmapScale]
966	foreach dataobj [get -objects] {
967	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
968	set _first $dataobj
969	}
970	foreach comp [$dataobj components] {
971	set tag $dataobj-$comp
972	if { ![info exists _datasets($tag)] } {
973	set bytes [$dataobj vtkdata $comp]
974	if 0 {
975	set f [open /tmp/vtkheightmap.vtk "w"]
976	fconfigure $f -translation binary -encoding binary
977	puts -nonewline $f $bytes
978	close $f
979	}
980	set length [string length $bytes]
981	if { $_reportClientInfo } {
982	set info {}
983	lappend info "tool_id" [$dataobj hints toolid]
984	lappend info "tool_name" [$dataobj hints toolname]
985	lappend info "tool_title" [$dataobj hints tooltitle]
986	lappend info "tool_command" [$dataobj hints toolcommand]
987	lappend info "tool_revision" [$dataobj hints toolrevision]
988	lappend info "dataset_label" [$dataobj hints label]
989	lappend info "dataset_size" $length
990	lappend info "dataset_tag" $tag
991	SendCmd "clientinfo [list $info]"
992	}
993	SendCmd "dataset add $tag data follows $length"
994	SendData $bytes
995	set _datasets($tag) 1
996	SetObjectStyle $dataobj $comp
997	}
998	if { [info exists _obj2ovride($dataobj-raise)] } {
999	# Setting dataset visible enables outline
1000	# and heightmap
1001	SendCmd "dataset visible 1 $tag"
1002	}
1003	if { ![info exists _comp2scale($tag)] \|\|
1004	$_comp2scale($tag) != $scale } {
1005	SendCmd "heightmap heightscale $scale $tag"
1006	set _comp2scale($tag) $scale
1007	}
1008	}
1009	}
1010	if { $_first != "" } {
1011	$itk_component(field) choices delete 0 end
1012	$itk_component(fieldmenu) delete 0 end
1013	array unset _fields
1014	set _curFldName ""
1015	foreach cname [$_first components] {
1016	foreach fname [$_first fieldnames $cname] {
1017	if { [info exists _fields($fname)] } {
1018	continue
1019	}
1020	foreach { label units components } \
1021	[$_first fieldinfo $fname] break
1022	$itk_component(field) choices insert end "$fname" "$label"
1023	$itk_component(fieldmenu) add radiobutton -label "$label" \
1024	-value $label -variable [itcl::scope _curFldLabel] \
1025	-selectcolor red \
1026	-activebackground $itk_option(-plotbackground) \
1027	-activeforeground $itk_option(-plotforeground) \
1028	-font "Arial 8" \
1029	-command [itcl::code $this Combo invoke]
1030	set _fields($fname) [list $label $units $components]
1031	if { $_curFldName == "" } {
1032	set _curFldName $fname
1033	set _curFldLabel $label
1034	}
1035	}
1036	}
1037	$itk_component(field) value $_curFldLabel
1038	}
1039	InitSettings -stretchtofit -outline
1040
1041	if { $_reset } {
1042	SendCmd "axis tickpos outside"
1043	#SendCmd "axis lformat all %g"
1044
1045	foreach axis { x y z } {
1046	set label ""
1047	if { $_first != "" } {
1048	if { $axis == "z" } {
1049	set label [$_first hints label]
1050	} else {
1051	set label [$_first hints ${axis}label]
1052	}
1053	}
1054	if { $label == "" } {
1055	if {$axis == "z"} {
1056	if { [string match "component*" $_curFldName] } {
1057	set label [string toupper $axis]
1058	} else {
1059	set label $_curFldLabel
1060	}
1061	} else {
1062	set label [string toupper $axis]
1063	}
1064	}
1065	# May be a space in the axis label.
1066	SendCmd [list axis name $axis $label]
1067
1068	set units ""
1069	if { $_first != "" } {
1070	if { $axis == "z" } {
1071	set units [$_first hints units]
1072	} else {
1073	set units [$_first hints ${axis}units]
1074	}
1075	}
1076	if { $units == "" && $axis == "z" } {
1077	if { $_first != "" && [$_first hints zunits] != "" } {
1078	set units [$_first hints zunits]
1079	} elseif { [info exists _fields($_curFldName)] } {
1080	set units [lindex $_fields($_curFldName) 1]
1081	}
1082	}
1083	# May be a space in the axis units.
1084	SendCmd [list axis units $axis $units]
1085	}
1086	#
1087	# Reset the camera and other view parameters
1088	#
1089	ResetAxes
1090	$_arcball quaternion [ViewToQuaternion]
1091	if {$_settings(-isheightmap) } {
1092	if { $_view(-ortho)} {
1093	SendCmd "camera mode ortho"
1094	} else {
1095	SendCmd "camera mode persp"
1096	}
1097	DoRotate
1098	SendCmd "camera reset"
1099	}
1100	PanCamera
1101	InitSettings -xgrid -ygrid -zgrid \
1102	-axisvisible -axislabels -heightmapscale -field -isheightmap \
1103	-numisolines
1104	if { [array size _fields] < 2 } {
1105	catch {blt::table forget $itk_component(field) $itk_component(field_l)}
1106	}
1107	RequestLegend
1108	set _reset 0
1109	}
1110	global readyForNextFrame
1111	set readyForNextFrame 0; # Don't advance to the next frame
1112
1113	# Actually write the commands to the server socket. If it fails, we don't
1114	# care. We're finished here.
1115	blt::busy hold $itk_component(hull)
1116	StopBufferingCommands
1117	blt::busy release $itk_component(hull)
1118	}
1119
1120	# ----------------------------------------------------------------------
1121	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1122	#
1123	# Returns a list of server IDs for the current datasets being displayed. This
1124	# is normally a single ID, but it might be a list of IDs if the current data
1125	# object has multiple components.
1126	# ----------------------------------------------------------------------
1127	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1128	set flag [lindex $args 0]
1129	switch -- $flag {
1130	"-all" {
1131	if { [llength $args] > 1 } {
1132	error "CurrentDatasets: can't specify dataobj after \"-all\""
1133	}
1134	set dlist [get -objects]
1135	}
1136	"-visible" {
1137	if { [llength $args] > 1 } {
1138	set dlist {}
1139	set args [lrange $args 1 end]
1140	foreach dataobj $args {
1141	if { [info exists _obj2ovride($dataobj-raise)] } {
1142	lappend dlist $dataobj
1143	}
1144	}
1145	} else {
1146	set dlist [get -visible]
1147	}
1148	}
1149	default {
1150	set dlist $args
1151	}
1152	}
1153	set rlist ""
1154	foreach dataobj $dlist {
1155	foreach comp [$dataobj components] {
1156	set tag $dataobj-$comp
1157	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1158	lappend rlist $tag
1159	}
1160	}
1161	}
1162	return $rlist
1163	}
1164
1165	itcl::body Rappture::VtkHeightmapViewer::CameraReset {} {
1166	array set _view {
1167	-qw 0.36
1168	-qx 0.25
1169	-qy 0.50
1170	-qz 0.70
1171	-xpan 0
1172	-ypan 0
1173	-zoom 1.0
1174	}
1175	if { $_first != "" } {
1176	set location [$_first hints camera]
1177	if { $location != "" } {
1178	array set _view $location
1179	}
1180	}
1181	$_arcball quaternion [ViewToQuaternion]
1182	if {$_settings(-isheightmap) } {
1183	DoRotate
1184	}
1185	SendCmd "camera reset"
1186	}
1187
1188	# ----------------------------------------------------------------------
1189	# USAGE: Zoom in
1190	# USAGE: Zoom out
1191	# USAGE: Zoom reset
1192	#
1193	# Called automatically when the user clicks on one of the zoom
1194	# controls for this widget. Changes the zoom for the current view.
1195	# ----------------------------------------------------------------------
1196	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1197	switch -- $option {
1198	"in" {
1199	set _view(-zoom) [expr {$_view(-zoom)*1.25}]
1200	SendCmd "camera zoom $_view(-zoom)"
1201	}
1202	"out" {
1203	set _view(-zoom) [expr {$_view(-zoom)*0.8}]
1204	SendCmd "camera zoom $_view(-zoom)"
1205	}
1206	"reset" {
1207	array set _view {
1208	-xpan 0
1209	-ypan 0
1210	-zoom 1.0
1211	}
1212	SendCmd "camera reset"
1213	}
1214	}
1215	}
1216
1217	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1218	set x $_view(-xpan)
1219	set y $_view(-ypan)
1220	SendCmd "camera pan $x $y"
1221	}
1222
1223
1224	# ----------------------------------------------------------------------
1225	# USAGE: Rotate click <x> <y>
1226	# USAGE: Rotate drag <x> <y>
1227	# USAGE: Rotate release <x> <y>
1228	#
1229	# Called automatically when the user clicks/drags/releases in the
1230	# plot area. Moves the plot according to the user's actions.
1231	# ----------------------------------------------------------------------
1232	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1233	switch -- $option {
1234	"click" {
1235	$itk_component(view) configure -cursor fleur
1236	set _click(x) $x
1237	set _click(y) $y
1238	}
1239	"drag" {
1240	if {[array size _click] == 0} {
1241	Rotate click $x $y
1242	} else {
1243	set w [winfo width $itk_component(view)]
1244	set h [winfo height $itk_component(view)]
1245	if {$w <= 0 \|\| $h <= 0} {
1246	return
1247	}
1248
1249	if {[catch {
1250	# this fails sometimes for no apparent reason
1251	set dx [expr {double($x-$_click(x))/$w}]
1252	set dy [expr {double($y-$_click(y))/$h}]
1253	}]} {
1254	return
1255	}
1256	if { $dx == 0 && $dy == 0 } {
1257	return
1258	}
1259	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1260	EventuallyRotate $q
1261	set _click(x) $x
1262	set _click(y) $y
1263	}
1264	}
1265	"release" {
1266	Rotate drag $x $y
1267	$itk_component(view) configure -cursor ""
1268	catch {unset _click}
1269	}
1270	default {
1271	error "bad option \"$option\": should be click, drag, release"
1272	}
1273	}
1274	}
1275
1276	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1277	foreach tag [CurrentDatasets -visible] {
1278	SendCmd "dataset getscalar pixel $x $y $tag"
1279	}
1280	}
1281
1282	# ----------------------------------------------------------------------
1283	# USAGE: $this Pan click x y
1284	# $this Pan drag x y
1285	# $this Pan release x y
1286	#
1287	# Called automatically when the user clicks on one of the zoom
1288	# controls for this widget. Changes the zoom for the current view.
1289	# ----------------------------------------------------------------------
1290	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1291	switch -- $option {
1292	"set" {
1293	set w [winfo width $itk_component(view)]
1294	set h [winfo height $itk_component(view)]
1295	set x [expr $x / double($w)]
1296	set y [expr $y / double($h)]
1297	set _view(-xpan) [expr $_view(-xpan) + $x]
1298	set _view(-ypan) [expr $_view(-ypan) + $y]
1299	PanCamera
1300	return
1301	}
1302	"click" {
1303	set _click(x) $x
1304	set _click(y) $y
1305	$itk_component(view) configure -cursor hand1
1306	}
1307	"drag" {
1308	if { ![info exists _click(x)] } {
1309	set _click(x) $x
1310	}
1311	if { ![info exists _click(y)] } {
1312	set _click(y) $y
1313	}
1314	set w [winfo width $itk_component(view)]
1315	set h [winfo height $itk_component(view)]
1316	set dx [expr ($_click(x) - $x)/double($w)]
1317	set dy [expr ($_click(y) - $y)/double($h)]
1318	set _click(x) $x
1319	set _click(y) $y
1320	set _view(-xpan) [expr $_view(-xpan) - $dx]
1321	set _view(-ypan) [expr $_view(-ypan) - $dy]
1322	PanCamera
1323	}
1324	"release" {
1325	Pan drag $x $y
1326	$itk_component(view) configure -cursor ""
1327	}
1328	default {
1329	error "unknown option \"$option\": should set, click, drag, or release"
1330	}
1331	}
1332	}
1333
1334	# ----------------------------------------------------------------------
1335	# USAGE: InitSettings <what> ?<value>?
1336	#
1337	# Used internally to update rendering settings whenever parameters
1338	# change in the popup settings panel. Sends the new settings off
1339	# to the back end.
1340	# ----------------------------------------------------------------------
1341	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1342	foreach spec $args {
1343	if { [info exists _settings($_first${spec})] } {
1344	# Reset global setting with dataobj specific setting
1345	set _settings($spec) $_settings($_first${spec})
1346	}
1347	AdjustSetting $spec
1348	}
1349	}
1350
1351	#
1352	# AdjustSetting --
1353	#
1354	# Changes/updates a specific setting in the widget. There are
1355	# usually user-setable option. Commands are sent to the render
1356	# server.
1357	#
1358	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1359	if { ![isconnected] } {
1360	return
1361	}
1362	switch -- $what {
1363	"-axisflymode" {
1364	set mode [$itk_component(axisflymode) value]
1365	set mode [$itk_component(axisflymode) translate $mode]
1366	set _settings($what) $mode
1367	SendCmd "axis flymode $mode"
1368	}
1369	"-axislabels" {
1370	set bool $_settings($what)
1371	SendCmd "axis labels all $bool"
1372	}
1373	"-axisminorticks" {
1374	set bool $_settings($what)
1375	SendCmd "axis minticks all $bool"
1376	}
1377	"-axisvisible" {
1378	set bool $_settings($what)
1379	SendCmd "axis visible all $bool"
1380	}
1381	"-background" {
1382	set bg [$itk_component(background) value]
1383	array set fgcolors {
1384	"black" "white"
1385	"white" "black"
1386	"grey" "black"
1387	}
1388	set fg $fgcolors($bg)
1389	configure -plotbackground $bg -plotforeground $fg
1390	$itk_component(view) delete "legend"
1391	SendCmd "screen bgcolor [Color2RGB $bg]"
1392	SendCmd "outline color [Color2RGB $fg]"
1393	SendCmd "axis color all [Color2RGB $fg]"
1394	DrawLegend
1395	}
1396	"-colormap" {
1397	set _changed($what) 1
1398	StartBufferingCommands
1399	set color [$itk_component(colormap) value]
1400	set _settings($what) $color
1401	if { $color == "none" } {
1402	if { $_settings(-colormapvisible) } {
1403	SendCmd "heightmap surface 0"
1404	set _settings(-colormapvisible) 0
1405	}
1406	} else {
1407	if { !$_settings(-colormapvisible) } {
1408	SendCmd "heightmap surface 1"
1409	set _settings(-colormapvisible) 1
1410	}
1411	SetCurrentColormap $color
1412	if {$_settings(-colormapdiscrete)} {
1413	set numColors [expr $_settings(-numisolines) + 1]
1414	SendCmd "colormap res $numColors $color"
1415	}
1416	}
1417	StopBufferingCommands
1418	EventuallyRequestLegend
1419	}
1420	"-colormapvisible" {
1421	set bool $_settings($what)
1422	SendCmd "heightmap surface $bool"
1423	}
1424	"-colormapdiscrete" {
1425	set bool $_settings($what)
1426	set numColors [expr $_settings(-numisolines) + 1]
1427	StartBufferingCommands
1428	if {$bool} {
1429	SendCmd "colormap res $numColors"
1430	# Discrete colormap requires preinterp on
1431	SendCmd "heightmap preinterp on"
1432	} else {
1433	SendCmd "colormap res default"
1434	# FIXME: add setting for preinterp (default on)
1435	SendCmd "heightmap preinterp on"
1436	}
1437	StopBufferingCommands
1438	EventuallyRequestLegend
1439	}
1440	"-edges" {
1441	set bool $_settings($what)
1442	SendCmd "heightmap edges $bool"
1443	}
1444	"-field" {
1445	set label [$itk_component(field) value]
1446	set fname [$itk_component(field) translate $label]
1447	set _settings($what) $fname
1448	if { [info exists _fields($fname)] } {
1449	foreach { label units components } $_fields($fname) break
1450	if { $components > 1 } {
1451	set _colorMode vmag
1452	} else {
1453	set _colorMode scalar
1454	}
1455	set _curFldName $fname
1456	set _curFldLabel $label
1457	} else {
1458	puts stderr "unknown field \"$fname\""
1459	return
1460	}
1461	set label ""
1462	if { $_first != "" } {
1463	set label [$_first hints label]
1464	}
1465	if { $label == "" } {
1466	if { [string match "component*" $_curFldName] } {
1467	set label Z
1468	} else {
1469	set label $_curFldLabel
1470	}
1471	}
1472	# May be a space in the axis label.
1473	SendCmd [list axis name z $label]
1474
1475	set units ""
1476	if { $_first != "" } {
1477	set units [$_first hints units]
1478	}
1479	if { $units == "" } {
1480	if { $_first != "" && [$_first hints zunits] != "" } {
1481	set units [$_first hints zunits]
1482	} elseif { [info exists _fields($_curFldName)] } {
1483	set units [lindex $_fields($_curFldName) 1]
1484	}
1485	}
1486	# May be a space in the axis units.
1487	SendCmd [list axis units z $units]
1488	# Get the new limits because the field changed.
1489	ResetAxes
1490	SendCmd "dataset scalar $_curFldName"
1491	SendCmd "heightmap colormode $_colorMode $_curFldName"
1492	UpdateContourList
1493	SendCmd "heightmap contourlist [list $_contourList]"
1494	Zoom reset
1495	DrawLegend
1496	}
1497	"-heightmapscale" {
1498	if { $_settings(-isheightmap) } {
1499	set scale [GetHeightmapScale]
1500	# Have to set the datasets individually because we are
1501	# tracking them in _comp2scale.
1502	foreach dataset [CurrentDatasets -all] {
1503	SendCmd "heightmap heightscale $scale $dataset"
1504	set _comp2scale($dataset) $scale
1505	}
1506	ResetAxes
1507	}
1508	}
1509	"-isheightmap" {
1510	set bool $_settings($what)
1511	set c $itk_component(view)
1512	StartBufferingCommands
1513	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1514	if { $bool } {
1515	set _settings(-heightmapscale) 50
1516	set _settings(-opacity) $_settings(-saveopacity)
1517	set _settings(-lighting) $_settings(-savelighting)
1518	set _settings(-outline) 0
1519	} else {
1520	set _settings(-heightmapscale) 0
1521	set _settings(-lighting) 0
1522	set _settings(-opacity) 100
1523	set _settings(-outline) $_settings(-saveoutline)
1524	}
1525	InitSettings -lighting -opacity -outline
1526	set scale [GetHeightmapScale]
1527	# Have to set the datasets individually because we are
1528	# tracking them in _comp2scale.
1529	foreach dataset [CurrentDatasets -all] {
1530	SendCmd "heightmap heightscale $scale $dataset"
1531	set _comp2scale($dataset) $scale
1532	}
1533	if { $bool } {
1534	$itk_component(lighting) configure -state normal
1535	$itk_component(opacity) configure -state normal
1536	$itk_component(scale) configure -state normal
1537	$itk_component(opacity_l) configure -state normal
1538	$itk_component(scale_l) configure -state normal
1539	$itk_component(outline) configure -state disabled
1540	if {$_view(-ortho)} {
1541	SendCmd "camera mode ortho"
1542	} else {
1543	SendCmd "camera mode persp"
1544	}
1545	} else {
1546	$itk_component(lighting) configure -state disabled
1547	$itk_component(opacity) configure -state disabled
1548	$itk_component(scale) configure -state disabled
1549	$itk_component(opacity_l) configure -state disabled
1550	$itk_component(scale_l) configure -state disabled
1551	$itk_component(outline) configure -state normal
1552	SendCmd "camera mode image"
1553	}
1554	if {$_settings(-stretchtofit)} {
1555	if {$scale == 0} {
1556	SendCmd "camera aspect window"
1557	} else {
1558	SendCmd "camera aspect square"
1559	}
1560	}
1561	ResetAxes
1562	if { $bool } {
1563	set q [ViewToQuaternion]
1564	$_arcball quaternion $q
1565	SendCmd "camera orient $q"
1566	} else {
1567	bind $c <ButtonPress-1> {}
1568	bind $c <B1-Motion> {}
1569	bind $c <ButtonRelease-1> {}
1570	}
1571	Zoom reset
1572	# Fix the mouse bindings for rotation/panning and the
1573	# camera mode. Ideally we'd create a bindtag for these.
1574	if { $bool } {
1575	# Bindings for rotation via mouse
1576	bind $c <ButtonPress-1> \
1577	[itcl::code $this Rotate click %x %y]
1578	bind $c <B1-Motion> \
1579	[itcl::code $this Rotate drag %x %y]
1580	bind $c <ButtonRelease-1> \
1581	[itcl::code $this Rotate release %x %y]
1582	}
1583	StopBufferingCommands
1584	}
1585	"-isolinecolor" {
1586	set color [$itk_component(isolinecolor) value]
1587	if { $color == "none" } {
1588	if { $_settings(-isolinesvisible) } {
1589	SendCmd "heightmap isolines 0"
1590	set _settings(-isolinesvisible) 0
1591	}
1592	} else {
1593	if { !$_settings(-isolinesvisible) } {
1594	SendCmd "heightmap isolines 1"
1595	set _settings(-isolinesvisible) 1
1596	}
1597	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1598	}
1599	DrawLegend
1600	}
1601	"-isolinesvisible" {
1602	set bool $_settings($what)
1603	SendCmd "heightmap isolines $bool"
1604	DrawLegend
1605	}
1606	"-legendvisible" {
1607	if { !$_settings($what) } {
1608	$itk_component(view) delete legend
1609	}
1610	DrawLegend
1611	}
1612	"-lighting" {
1613	if { $_settings(-isheightmap) } {
1614	set _settings(-savelighting) $_settings($what)
1615	set bool $_settings($what)
1616	SendCmd "heightmap lighting $bool"
1617	} else {
1618	SendCmd "heightmap lighting 0"
1619	}
1620	}
1621	"-numisolines" {
1622	set _settings($what) [$itk_component(numisolines) value]
1623	set _currentNumIsolines $_settings($what)
1624	UpdateContourList
1625	set _changed($what) 1
1626	SendCmd "heightmap contourlist [list $_contourList]"
1627	if {$_settings(-colormapdiscrete)} {
1628	set numColors [expr $_settings($what) + 1]
1629	SendCmd "colormap res $numColors"
1630	EventuallyRequestLegend
1631	} else {
1632	DrawLegend
1633	}
1634	}
1635	"-opacity" {
1636	set _changed($what) 1
1637	set val [expr $_settings($what) * 0.01]
1638	if { $_settings(-isheightmap) } {
1639	set _settings(-saveopacity) $_settings($what)
1640	SendCmd "heightmap opacity $val"
1641	} else {
1642	SendCmd "heightmap opacity 1.0"
1643	}
1644	}
1645	"-outline" {
1646	if { $_settings(-isheightmap) } {
1647	SendCmd "outline visible 0"
1648	} else {
1649	set _settings(-saveoutline) $_settings($what)
1650	set bool $_settings($what)
1651	SendCmd "outline visible $bool"
1652	}
1653	}
1654	"-stretchtofit" {
1655	set bool $_settings($what)
1656	if { $bool } {
1657	set heightScale [GetHeightmapScale]
1658	if {$heightScale == 0} {
1659	SendCmd "camera aspect window"
1660	} else {
1661	SendCmd "camera aspect square"
1662	}
1663	} else {
1664	SendCmd "camera aspect native"
1665	}
1666	Zoom reset
1667	}
1668	"-wireframe" {
1669	set bool $_settings($what)
1670	SendCmd "heightmap wireframe $bool"
1671	}
1672	"-xgrid" - "-ygrid" - "-zgrid" {
1673	set axis [string tolower [string range $what 1 1]]
1674	set bool $_settings($what)
1675	SendCmd "axis grid $axis $bool"
1676	}
1677	default {
1678	error "don't know how to fix $what"
1679	}
1680	}
1681	}
1682
1683	#
1684	# RequestLegend --
1685	#
1686	# Request a new legend from the server. The size of the legend
1687	# is determined from the height of the canvas.
1688	#
1689	# This should be called when
1690	# 1. A new current colormap is set.
1691	# 2. Window is resized.
1692	# 3. The limits of the data have changed. (Just need a redraw).
1693	# 4. Number of isolines have changed. (Just need a redraw).
1694	# 5. Legend becomes visible (Just need a redraw).
1695	#
1696	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1697	set _legendPending 0
1698	set font "Arial 8"
1699	set w 12
1700	set lineht [font metrics $font -linespace]
1701	# color ramp height = (canvas height) - (min and max value lines) - 2
1702	set h [expr {$_height - 2 * ($lineht + 2)}]
1703	set _legendHeight $h
1704
1705	set fname $_curFldName
1706	if { [string match "component*" $fname] } {
1707	set title ""
1708	} else {
1709	if { [info exists _fields($fname)] } {
1710	foreach { title units } $_fields($fname) break
1711	if { $units != "" } {
1712	set title [format "%s (%s)" $title $units]
1713	}
1714	} else {
1715	set title $fname
1716	}
1717	}
1718	# If there's a title too, subtract one more line
1719	if { $title != "" } {
1720	incr h -$lineht
1721	}
1722	if { $h < 1 } {
1723	return
1724	}
1725	# Set the legend on the first dataset.
1726	if { $_currentColormap != "" } {
1727	set cmap $_currentColormap
1728	if { ![info exists _colormaps($cmap)] } {
1729	BuildColormap $cmap
1730	set _colormaps($cmap) 1
1731	}
1732	#SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1733	SendCmd "legend2 $cmap $w $h"
1734	}
1735	}
1736
1737	#
1738	# ResetAxes --
1739	#
1740	# Set axis z bounds and range
1741	#
1742	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1743	if { ![info exists _limits($_curFldName)]} {
1744	SendCmd "dataset maprange all"
1745	SendCmd "axis autorange z on"
1746	SendCmd "axis autobounds z on"
1747	return
1748	}
1749	foreach { xmin xmax } $_limits(x) break
1750	foreach { ymin ymax } $_limits(y) break
1751	foreach { vmin vmax } $_limits($_curFldName) break
1752
1753	global tcl_precision
1754	set tcl_precision 17
1755	set xr [expr $xmax - $xmin]
1756	set yr [expr $ymax - $ymin]
1757	set vr [expr $vmax - $vmin]
1758	set r [expr ($yr > $xr) ? $yr : $xr]
1759	if { $vr < 1.0e-17 } {
1760	set dataScale 1.0
1761	} else {
1762	set dataScale [expr $r / $vr]
1763	}
1764	set heightScale [GetHeightmapScale]
1765	set bmin [expr $heightScale * $dataScale * $vmin]
1766	set bmax [expr $heightScale * $dataScale * $vmax]
1767	if {$heightScale > 0} {
1768	set zpos [expr - $bmin]
1769	SendCmd "heightmap pos 0 0 $zpos"
1770	} else {
1771	SendCmd "heightmap pos 0 0 0"
1772	}
1773	set bmax [expr $bmax - $bmin]
1774	set bmin 0
1775	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1776	SendCmd "axis bounds z $bmin $bmax"
1777	SendCmd "axis range z $_limits($_curFldName)"
1778	}
1779
1780	#
1781	# SetCurrentColormap --
1782	#
1783	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1784	# Keep track of the colormaps that we build.
1785	if { $name != "none" && ![info exists _colormaps($name)] } {
1786	BuildColormap $name
1787	set _colormaps($name) 1
1788	}
1789	set _currentColormap $name
1790	SendCmd "heightmap colormap $_currentColormap"
1791	}
1792
1793	#
1794	# BuildColormap --
1795	#
1796	# Build the designated colormap on the server.
1797	#
1798	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1799	set cmap [ColorsToColormap $name]
1800	if { [llength $cmap] == 0 } {
1801	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1802	}
1803	set amap "0.0 1.0 1.0 1.0"
1804	SendCmd "colormap add $name { $cmap } { $amap }"
1805	}
1806
1807	# ----------------------------------------------------------------------
1808	# CONFIGURATION OPTION: -mode
1809	# ----------------------------------------------------------------------
1810	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1811	switch -- $itk_option(-mode) {
1812	"heightmap" {
1813	set _settings(-isheightmap) 1
1814	}
1815	"contour" {
1816	set _settings(-isheightmap) 0
1817	}
1818	default {
1819	error "unknown mode settings \"$itk_option(-mode)\""
1820	}
1821	}
1822	if { !$_reset } {
1823	AdjustSetting -isheightmap
1824	}
1825	}
1826
1827	# ----------------------------------------------------------------------
1828	# CONFIGURATION OPTION: -plotbackground
1829	# ----------------------------------------------------------------------
1830	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1831	if { [isconnected] } {
1832	set rgb [Color2RGB $itk_option(-plotbackground)]
1833	if { !$_reset } {
1834	SendCmd "screen bgcolor $rgb"
1835	}
1836	$itk_component(view) configure -background $itk_option(-plotbackground)
1837	}
1838	}
1839
1840	# ----------------------------------------------------------------------
1841	# CONFIGURATION OPTION: -plotforeground
1842	# ----------------------------------------------------------------------
1843	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1844	if { [isconnected] } {
1845	set rgb [Color2RGB $itk_option(-plotforeground)]
1846	if { !$_reset } {
1847	SendCmd "axis color all $rgb"
1848	SendCmd "outline color $rgb"
1849	}
1850	}
1851	}
1852
1853	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1854
1855	set fg [option get $itk_component(hull) font Font]
1856	#set bfg [option get $itk_component(hull) boldFont Font]
1857
1858	set inner [$itk_component(main) insert end \
1859	-title "Contour/Surface Settings" \
1860	-icon [Rappture::icon contour2]]
1861	$inner configure -borderwidth 4
1862
1863	checkbutton $inner.legend \
1864	-text "Legend" \
1865	-variable [itcl::scope _settings(-legendvisible)] \
1866	-command [itcl::code $this AdjustSetting -legendvisible] \
1867	-font "Arial 9"
1868
1869	checkbutton $inner.wireframe \
1870	-text "Wireframe" \
1871	-variable [itcl::scope _settings(-wireframe)] \
1872	-command [itcl::code $this AdjustSetting -wireframe] \
1873	-font "Arial 9"
1874
1875	itk_component add lighting {
1876	checkbutton $inner.lighting \
1877	-text "Enable Lighting" \
1878	-variable [itcl::scope _settings(-lighting)] \
1879	-command [itcl::code $this AdjustSetting -lighting] \
1880	-font "Arial 9"
1881	} {
1882	ignore -font
1883	}
1884	checkbutton $inner.edges \
1885	-text "Edges" \
1886	-variable [itcl::scope _settings(-edges)] \
1887	-command [itcl::code $this AdjustSetting -edges] \
1888	-font "Arial 9"
1889
1890	itk_component add outline {
1891	checkbutton $inner.outline \
1892	-text "Outline" \
1893	-variable [itcl::scope _settings(-outline)] \
1894	-command [itcl::code $this AdjustSetting -outline] \
1895	-font "Arial 9"
1896	} {
1897	ignore -font
1898	}
1899	checkbutton $inner.stretch \
1900	-text "Stretch to fit" \
1901	-variable [itcl::scope _settings(-stretchtofit)] \
1902	-command [itcl::code $this AdjustSetting -stretchtofit] \
1903	-font "Arial 9"
1904
1905	checkbutton $inner.isolines \
1906	-text "Isolines" \
1907	-variable [itcl::scope _settings(-isolinesvisible)] \
1908	-command [itcl::code $this AdjustSetting -isolinesvisible] \
1909	-font "Arial 9"
1910
1911	checkbutton $inner.colormapDiscrete \
1912	-text "Discrete Colormap" \
1913	-variable [itcl::scope _settings(-colormapdiscrete)] \
1914	-command [itcl::code $this AdjustSetting -colormapdiscrete] \
1915	-font "Arial 9"
1916
1917	itk_component add field_l {
1918	label $inner.field_l -text "Field" -font "Arial 9"
1919	} {
1920	ignore -font
1921	}
1922	itk_component add field {
1923	Rappture::Combobox $inner.field -width 10 -editable 0
1924	}
1925	bind $inner.field <<Value>> \
1926	[itcl::code $this AdjustSetting -field]
1927
1928	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1929	itk_component add colormap {
1930	Rappture::Combobox $inner.colormap -width 10 -editable 0
1931	}
1932	$inner.colormap choices insert end [GetColormapList -includeNone]
1933	$itk_component(colormap) value $_settings(-colormap)
1934	bind $inner.colormap <<Value>> \
1935	[itcl::code $this AdjustSetting -colormap]
1936
1937	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1938	itk_component add isolinecolor {
1939	Rappture::Combobox $inner.isolinecolor -width 10 -editable 0
1940	}
1941	$inner.isolinecolor choices insert end \
1942	"black" "black" \
1943	"blue" "blue" \
1944	"cyan" "cyan" \
1945	"green" "green" \
1946	"grey" "grey" \
1947	"magenta" "magenta" \
1948	"orange" "orange" \
1949	"red" "red" \
1950	"white" "white" \
1951	"none" "none"
1952
1953	$itk_component(isolinecolor) value $_settings(-isolinecolor)
1954	bind $inner.isolinecolor <<Value>> \
1955	[itcl::code $this AdjustSetting -isolinecolor]
1956
1957	label $inner.background_l -text "Background Color" -font "Arial 9"
1958	itk_component add background {
1959	Rappture::Combobox $inner.background -width 10 -editable 0
1960	}
1961	$inner.background choices insert end \
1962	"black" "black" \
1963	"white" "white" \
1964	"grey" "grey"
1965
1966	$itk_component(background) value "white"
1967	bind $inner.background <<Value>> \
1968	[itcl::code $this AdjustSetting -background]
1969
1970	itk_component add opacity_l {
1971	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1972	} {
1973	ignore -font
1974	}
1975	itk_component add opacity {
1976	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1977	-variable [itcl::scope _settings(-opacity)] \
1978	-showvalue off \
1979	-command [itcl::code $this AdjustSetting -opacity]
1980	}
1981	itk_component add scale_l {
1982	label $inner.scale_l -text "Scale" -font "Arial 9"
1983	} {
1984	ignore -font
1985	}
1986	itk_component add scale {
1987	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1988	-variable [itcl::scope _settings(-heightmapscale)] \
1989	-showvalue off \
1990	-command [itcl::code $this AdjustSetting -heightmapscale]
1991	}
1992	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1993	itk_component add numisolines {
1994	Rappture::Spinint $inner.numisolines \
1995	-min 0 -max 50 -font "arial 9"
1996	}
1997	$itk_component(numisolines) value $_settings(-numisolines)
1998	bind $itk_component(numisolines) <<Value>> \
1999	[itcl::code $this AdjustSetting -numisolines]
2000
2001	frame $inner.separator1 -height 2 -relief sunken -bd 1
2002	frame $inner.separator2 -height 2 -relief sunken -bd 1
2003
2004	blt::table $inner \
2005	0,0 $inner.field_l -anchor w -pady 2 \
2006	0,1 $inner.field -anchor w -pady 2 -fill x \
2007	1,0 $inner.colormap_l -anchor w -pady 2 \
2008	1,1 $inner.colormap -anchor w -pady 2 -fill x \
2009	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
2010	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
2011	3,0 $inner.background_l -anchor w -pady 2 \
2012	3,1 $inner.background -anchor w -pady 2 -fill x \
2013	4,0 $inner.numisolines_l -anchor w -pady 2 \
2014	4,1 $inner.numisolines -anchor w -pady 2 \
2015	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
2016	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
2017	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
2018	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
2019	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
2020	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
2021	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
2022	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
2023	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
2024	14,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
2025	15,0 $inner.opacity_l -anchor w -pady 2 \
2026	15,1 $inner.opacity -fill x -pady 2 \
2027	16,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
2028	16,1 $inner.scale -fill x -pady 2 -cspan 2 \
2029
2030	blt::table configure $inner r* c* -resize none
2031	blt::table configure $inner r17 c1 -resize expand
2032	}
2033
2034	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
2035
2036	set fg [option get $itk_component(hull) font Font]
2037	#set bfg [option get $itk_component(hull) boldFont Font]
2038
2039	set inner [$itk_component(main) insert end \
2040	-title "Axis Settings" \
2041	-icon [Rappture::icon axis2]]
2042	$inner configure -borderwidth 4
2043
2044	checkbutton $inner.visible \
2045	-text "Axes" \
2046	-variable [itcl::scope _settings(-axisvisible)] \
2047	-command [itcl::code $this AdjustSetting -axisvisible] \
2048	-font "Arial 9"
2049	checkbutton $inner.labels \
2050	-text "Axis Labels" \
2051	-variable [itcl::scope _settings(-axislabels)] \
2052	-command [itcl::code $this AdjustSetting -axislabels] \
2053	-font "Arial 9"
2054	label $inner.grid_l -text "Grid" -font "Arial 9"
2055	checkbutton $inner.xgrid \
2056	-text "X" \
2057	-variable [itcl::scope _settings(-xgrid)] \
2058	-command [itcl::code $this AdjustSetting -xgrid] \
2059	-font "Arial 9"
2060	checkbutton $inner.ygrid \
2061	-text "Y" \
2062	-variable [itcl::scope _settings(-ygrid)] \
2063	-command [itcl::code $this AdjustSetting -ygrid] \
2064	-font "Arial 9"
2065	checkbutton $inner.zgrid \
2066	-text "Z" \
2067	-variable [itcl::scope _settings(-zgrid)] \
2068	-command [itcl::code $this AdjustSetting -zgrid] \
2069	-font "Arial 9"
2070	checkbutton $inner.minorticks \
2071	-text "Minor Ticks" \
2072	-variable [itcl::scope _settings(-axisminorticks)] \
2073	-command [itcl::code $this AdjustSetting -axisminorticks] \
2074	-font "Arial 9"
2075
2076	label $inner.mode_l -text "Mode" -font "Arial 9"
2077
2078	itk_component add axisflymode {
2079	Rappture::Combobox $inner.mode -width 10 -editable 0
2080	}
2081	$inner.mode choices insert end \
2082	"static_triad" "static" \
2083	"closest_triad" "closest" \
2084	"furthest_triad" "farthest" \
2085	"outer_edges" "outer"
2086	$itk_component(axisflymode) value $_settings(-axisflymode)
2087	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
2088
2089	blt::table $inner \
2090	0,0 $inner.visible -anchor w -cspan 4 \
2091	1,0 $inner.labels -anchor w -cspan 4 \
2092	2,0 $inner.minorticks -anchor w -cspan 4 \
2093	4,0 $inner.grid_l -anchor w \
2094	4,1 $inner.xgrid -anchor w \
2095	4,2 $inner.ygrid -anchor w \
2096	4,3 $inner.zgrid -anchor w \
2097	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2098	5,1 $inner.mode -fill x -cspan 3
2099
2100	blt::table configure $inner r* c* -resize none
2101	blt::table configure $inner r7 c6 -resize expand
2102	blt::table configure $inner r3 -height 0.125i
2103	}
2104
2105	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2106	set inner [$itk_component(main) insert end \
2107	-title "Camera Settings" \
2108	-icon [Rappture::icon camera]]
2109	$inner configure -borderwidth 4
2110
2111	label $inner.view_l -text "view" -font "Arial 9"
2112	set f [frame $inner.view]
2113	foreach side { front back left right top bottom } {
2114	button $f.$side -image [Rappture::icon view$side] \
2115	-command [itcl::code $this SetOrientation $side]
2116	Rappture::Tooltip::for $f.$side "Change the view to $side"
2117	pack $f.$side -side left
2118	}
2119
2120	blt::table $inner \
2121	0,0 $inner.view_l -anchor e -pady 2 \
2122	0,1 $inner.view -anchor w -pady 2
2123	blt::table configure $inner r0 -resize none
2124
2125	set labels { qx qy qz qw xpan ypan zoom }
2126	set row 1
2127	foreach tag $labels {
2128	label $inner.${tag}label -text $tag -font "Arial 9"
2129	entry $inner.${tag} -font "Arial 9" -bg white \
2130	-textvariable [itcl::scope _view(-$tag)]
2131	bind $inner.${tag} <Return> \
2132	[itcl::code $this camera set -${tag}]
2133	bind $inner.${tag} <KP_Enter> \
2134	[itcl::code $this camera set -${tag}]
2135	blt::table $inner \
2136	$row,0 $inner.${tag}label -anchor e -pady 2 \
2137	$row,1 $inner.${tag} -anchor w -pady 2
2138	blt::table configure $inner r$row -resize none
2139	incr row
2140	}
2141	checkbutton $inner.ortho \
2142	-text "Orthographic Projection" \
2143	-variable [itcl::scope _view(-ortho)] \
2144	-command [itcl::code $this camera set -ortho] \
2145	-font "Arial 9"
2146	blt::table $inner \
2147	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2148	blt::table configure $inner r$row -resize none
2149	incr row
2150
2151	blt::table configure $inner c* -resize none
2152	blt::table configure $inner c2 -resize expand
2153	blt::table configure $inner r$row -resize expand
2154	}
2155
2156	#
2157	# camera --
2158	#
2159	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2160	switch -- $option {
2161	"show" {
2162	puts [array get _view]
2163	}
2164	"set" {
2165	set what [lindex $args 0]
2166	set x $_view($what)
2167	set code [catch { string is double $x } result]
2168	if { $code != 0 \|\| !$result } {
2169	return
2170	}
2171	switch -- $what {
2172	"-ortho" {
2173	if {$_view($what)} {
2174	SendCmd "camera mode ortho"
2175	} else {
2176	SendCmd "camera mode persp"
2177	}
2178	}
2179	"-xpan" - "-ypan" {
2180	PanCamera
2181	}
2182	"-qx" - "-qy" - "-qz" - "-qw" {
2183	set q [ViewToQuaternion]
2184	$_arcball quaternion $q
2185	EventuallyRotate $q
2186	}
2187	"-zoom" {
2188	SendCmd "camera zoom $_view($what)"
2189	}
2190	}
2191	}
2192	}
2193	}
2194
2195	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2196	set bytes ""
2197	foreach dataobj [get] {
2198	foreach comp [$dataobj components] {
2199	set tag $dataobj-$comp
2200	set contents [$dataobj vtkdata $comp]
2201	append bytes "$contents\n"
2202	}
2203	}
2204	return [list .vtk $bytes]
2205	}
2206
2207	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2208	if { [image width $_image(download)] > 0 &&
2209	[image height $_image(download)] > 0 } {
2210	set bytes [$_image(download) data -format "jpeg -quality 100"]
2211	set bytes [Rappture::encoding::decode -as b64 $bytes]
2212	return [list .jpg $bytes]
2213	}
2214	return ""
2215	}
2216
2217	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2218	Rappture::Balloon $popup \
2219	-title "[Rappture::filexfer::label downloadWord] as..."
2220	set inner [$popup component inner]
2221	label $inner.summary -text "" -anchor w
2222	radiobutton $inner.vtk_button -text "VTK data file" \
2223	-variable [itcl::scope _downloadPopup(format)] \
2224	-font "Arial 9 " \
2225	-value vtk
2226	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2227	radiobutton $inner.image_button -text "Image File" \
2228	-variable [itcl::scope _downloadPopup(format)] \
2229	-font "Arial 9 " \
2230	-value image
2231	Rappture::Tooltip::for $inner.image_button \
2232	"Save as digital image."
2233
2234	button $inner.ok -text "Save" \
2235	-highlightthickness 0 -pady 2 -padx 3 \
2236	-command $command \
2237	-compound left \
2238	-image [Rappture::icon download]
2239
2240	button $inner.cancel -text "Cancel" \
2241	-highlightthickness 0 -pady 2 -padx 3 \
2242	-command [list $popup deactivate] \
2243	-compound left \
2244	-image [Rappture::icon cancel]
2245
2246	blt::table $inner \
2247	0,0 $inner.summary -cspan 2 \
2248	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2249	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2250	4,1 $inner.cancel -width .9i -fill y \
2251	4,0 $inner.ok -padx 2 -width .9i -fill y
2252	blt::table configure $inner r3 -height 4
2253	blt::table configure $inner r4 -pady 4
2254	raise $inner.image_button
2255	$inner.vtk_button invoke
2256	return $inner
2257	}
2258
2259	#
2260	# SetObjectStyle --
2261	#
2262	# Set the style of the heightmap/contour object. This gets calls
2263	# for each dataset once as it is loaded. It can overridden by
2264	# the user controls.
2265	#
2266	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2267	# Parse style string.
2268	set tag $dataobj-$comp
2269	array set style {
2270	-color BCGYR
2271	-levels 10
2272	-opacity 1.0
2273	}
2274	set stylelist [$dataobj style $comp]
2275	if { $stylelist != "" } {
2276	array set style $stylelist
2277	}
2278	# This is too complicated. We want to set the colormap, number of
2279	# isolines and opacity for the dataset. They can be the default values,
2280	# the style hints loaded with the dataset, or set by user controls. As
2281	# datasets get loaded, they first use the defaults that are overidden
2282	# by the style hints. If the user changes the global controls, then that
2283	# overrides everything else. I don't know what it means when global
2284	# controls are specified as style hints by each dataset. It complicates
2285	# the code to handle aberrant cases.
2286
2287	if { $_changed(-opacity) } {
2288	set style(-opacity) [expr $_settings(-opacity) * 0.01]
2289	}
2290	if { $_changed(-numisolines) } {
2291	set style(-levels) $_settings(-numisolines)
2292	}
2293	if { $_changed(-colormap) } {
2294	set style(-color) $_settings(-colormap)
2295	}
2296	if { $_currentColormap == "" } {
2297	$itk_component(colormap) value $style(-color)
2298	}
2299	if { [info exists style(-stretchtofit)] } {
2300	set _settings(-stretchtofit) $style(-stretchtofit)
2301	AdjustSetting -stretchtofit
2302	}
2303	if { $_currentNumIsolines != $style(-levels) } {
2304	set _currentNumIsolines $style(-levels)
2305	set _settings(-numisolines) $_currentNumIsolines
2306	$itk_component(numisolines) value $_currentNumIsolines
2307	UpdateContourList
2308	DrawLegend
2309	}
2310	SendCmd "outline add $tag"
2311	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2312	SendCmd "outline visible $_settings(-outline) $tag"
2313	set scale [GetHeightmapScale]
2314	SendCmd "[list heightmap add contourlist $_contourList $scale $tag]"
2315	set _comp2scale($tag) $_settings(-heightmapscale)
2316	SendCmd "heightmap edges $_settings(-edges) $tag"
2317	SendCmd "heightmap wireframe $_settings(-wireframe) $tag"
2318	SetCurrentColormap $style(-color)
2319	set color [$itk_component(isolinecolor) value]
2320	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2321	SendCmd "heightmap lighting $_settings(-isheightmap) $tag"
2322	SendCmd "heightmap isolines $_settings(-isolinesvisible) $tag"
2323	SendCmd "heightmap surface $_settings(-colormapvisible) $tag"
2324	SendCmd "heightmap opacity $style(-opacity) $tag"
2325	set _settings(-opacity) [expr $style(-opacity) * 100.0]
2326	}
2327
2328	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2329	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2330	return 0
2331	}
2332	return 1
2333	}
2334
2335	# ----------------------------------------------------------------------
2336	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2337	#
2338	# Invoked automatically whenever the "legend" command comes in from
2339	# the rendering server. Indicates that binary image data with the
2340	# specified <size> will follow.
2341	# ----------------------------------------------------------------------
2342	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2343	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2344	if { [isconnected] } {
2345	set bytes [ReceiveBytes $size]
2346	if { ![info exists _image(legend)] } {
2347	set _image(legend) [image create photo]
2348	}
2349	$_image(legend) configure -data $bytes
2350	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2351	if { [catch {DrawLegend} errs] != 0 } {
2352	global errorInfo
2353	puts stderr "errs=$errs errorInfo=$errorInfo"
2354	}
2355	}
2356	}
2357
2358	#
2359	# DrawLegend --
2360	#
2361	# Draws the legend in the own canvas on the right side of the plot area.
2362	#
2363	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2364	set fname $_curFldName
2365	set c $itk_component(view)
2366	set w [winfo width $c]
2367	set h [winfo height $c]
2368	set font "Arial 8"
2369	set lineht [font metrics $font -linespace]
2370
2371	if { [string match "component*" $fname] } {
2372	set title ""
2373	} else {
2374	if { [info exists _fields($fname)] } {
2375	foreach { title units } $_fields($fname) break
2376	if { $units != "" } {
2377	set title [format "%s (%s)" $title $units]
2378	}
2379	} else {
2380	set title $fname
2381	}
2382	}
2383	set x [expr $w - 2]
2384	if { !$_settings(-legendvisible) } {
2385	$c delete legend
2386	return
2387	}
2388	if { [$c find withtag "legend"] == "" } {
2389	set y 2
2390	# If there's a legend title, create a text item for the title.
2391	$c create text $x $y \
2392	-anchor ne \
2393	-fill $itk_option(-plotforeground) -tags "title legend" \
2394	-font $font
2395	if { $title != "" } {
2396	incr y $lineht
2397	}
2398	$c create text $x $y \
2399	-anchor ne \
2400	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2401	-font $font
2402	incr y $lineht
2403	$c create image $x $y \
2404	-anchor ne \
2405	-image $_image(legend) -tags "colormap legend"
2406	$c create rectangle $x $y 1 1 \
2407	-fill "" -outline "" -tags "sensor legend"
2408	$c create text $x [expr {$h-2}] \
2409	-anchor se \
2410	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2411	-font $font
2412	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2413	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2414	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2415	}
2416	$c delete isoline
2417	set x2 $x
2418	set iw [image width $_image(legend)]
2419	set ih [image height $_image(legend)]
2420	set x1 [expr $x2 - ($iw*12)/10]
2421	set color [$itk_component(isolinecolor) value]
2422
2423	# Draw the isolines on the legend.
2424	array unset _isolines
2425	if { $color != "none" && [info exists _limits($_curFldName)] &&
2426	$_settings(-isolinesvisible) && $_currentNumIsolines > 0 } {
2427
2428	foreach { vmin vmax } $_limits($_curFldName) break
2429	set range [expr double($vmax - $vmin)]
2430	if { $range <= 0.0 } {
2431	set range 1.0; # Min is greater or equal to max.
2432	}
2433	set tags "isoline legend"
2434	set offset [expr 2 + $lineht]
2435	if { $title != "" } {
2436	incr offset $lineht
2437	}
2438	foreach value $_contourList {
2439	set norm [expr 1.0 - (($value - $vmin) / $range)]
2440	set y1 [expr int(round(($norm * $ih) + $offset))]
2441	for { set off 0 } { $off < 3 } { incr off } {
2442	set _isolines([expr $y1 + $off]) $value
2443	set _isolines([expr $y1 - $off]) $value
2444	}
2445	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2446	}
2447	}
2448
2449	$c bind title <ButtonPress> [itcl::code $this Combo post]
2450	$c bind title <Enter> [itcl::code $this Combo activate]
2451	$c bind title <Leave> [itcl::code $this Combo deactivate]
2452	# Reset the item coordinates according the current size of the plot.
2453	if { [info exists _limits($_curFldName)] } {
2454	foreach { vmin vmax } $_limits($_curFldName) break
2455	$c itemconfigure vmin -text [format %g $vmin]
2456	$c itemconfigure vmax -text [format %g $vmax]
2457	}
2458	set y 2
2459	# If there's a legend title, move the title to the correct position
2460	if { $title != "" } {
2461	$c itemconfigure title -text $title
2462	$c coords title $x $y
2463	incr y $lineht
2464	}
2465	$c coords vmax $x $y
2466	incr y $lineht
2467	$c coords colormap $x $y
2468	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2469	$c raise sensor
2470	$c coords vmin $x [expr {$h - 2}]
2471	}
2472
2473	#
2474	# EnterLegend --
2475	#
2476	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2477	SetLegendTip $x $y
2478	}
2479
2480	#
2481	# MotionLegend --
2482	#
2483	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2484	Rappture::Tooltip::tooltip cancel
2485	set c $itk_component(view)
2486	set cw [winfo width $c]
2487	set ch [winfo height $c]
2488	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2489	SetLegendTip $x $y
2490	}
2491	}
2492
2493	#
2494	# LeaveLegend --
2495	#
2496	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2497	Rappture::Tooltip::tooltip cancel
2498	.rappturetooltip configure -icon ""
2499	}
2500
2501	#
2502	# SetLegendTip --
2503	#
2504	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2505	set fname $_curFldName
2506	set c $itk_component(view)
2507	set w [winfo width $c]
2508	set h [winfo height $c]
2509	set font "Arial 8"
2510	set lineht [font metrics $font -linespace]
2511
2512	set ih [image height $_image(legend)]
2513	# Subtract off the offset of the color ramp from the top of the canvas
2514	set iy [expr $y - ($lineht + 2)]
2515
2516	if { [string match "component*" $fname] } {
2517	set title ""
2518	} else {
2519	if { [info exists _fields($fname)] } {
2520	foreach { title units } $_fields($fname) break
2521	if { $units != "" } {
2522	set title [format "%s (%s)" $title $units]
2523	}
2524	} else {
2525	set title $fname
2526	}
2527	}
2528	# If there's a legend title, increase the offset by the line height.
2529	if { $title != "" } {
2530	incr iy -$lineht
2531	}
2532
2533	# Make a swatch of the selected color
2534	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2535	return
2536	}
2537
2538	if { ![info exists _image(swatch)] } {
2539	set _image(swatch) [image create photo -width 24 -height 24]
2540	}
2541	set color [eval format "\#%02x%02x%02x" $pixel]
2542	$_image(swatch) put black -to 0 0 23 23
2543	$_image(swatch) put $color -to 1 1 22 22
2544
2545	# Compute the value of the point
2546	if { [info exists _limits($fname)] } {
2547	foreach { vmin vmax } $_limits($fname) break
2548	set t [expr 1.0 - (double($iy) / double($ih-1))]
2549	set value [expr $t * ($vmax - $vmin) + $vmin]
2550	} else {
2551	set value 0.0
2552	}
2553	set tipx [expr $x + 15]
2554	set tipy [expr $y - 5]
2555	.rappturetooltip configure -icon $_image(swatch)
2556	if { [info exists _isolines($y)] } {
2557	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2558	} else {
2559	Rappture::Tooltip::text $c [format "$title %g" $value]
2560	}
2561	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2562	}
2563
2564	# ----------------------------------------------------------------------
2565	# USAGE: _dropdown post
2566	# USAGE: _dropdown unpost
2567	# USAGE: _dropdown select
2568	#
2569	# Used internally to handle the dropdown list for this combobox. The
2570	# post/unpost options are invoked when the list is posted or unposted
2571	# to manage the relief of the controlling button. The select option
2572	# is invoked whenever there is a selection from the list, to assign
2573	# the value back to the gauge.
2574	# ----------------------------------------------------------------------
2575	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2576	set c $itk_component(view)
2577	switch -- $option {
2578	post {
2579	foreach { x1 y1 x2 y2 } [$c bbox title] break
2580	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2581	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2582	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2583	tk_popup $itk_component(fieldmenu) $x $y
2584	}
2585	activate {
2586	$c itemconfigure title -fill red
2587	}
2588	deactivate {
2589	$c itemconfigure title -fill $itk_option(-plotforeground)
2590	}
2591	invoke {
2592	$itk_component(field) value $_curFldLabel
2593	AdjustSetting -field
2594	}
2595	default {
2596	error "bad option \"$option\": should be post, unpost, select"
2597	}
2598	}
2599	}
2600
2601	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2602	if { $_settings(-isheightmap) } {
2603	set val $_settings(-heightmapscale)
2604	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2605	return $sval
2606	}
2607	return 0
2608	}
2609
2610	itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2611	array set positions {
2612	front "0.707107 0.707107 0 0"
2613	back "0 0 0.707107 0.707107"
2614	left "0.5 0.5 -0.5 -0.5"
2615	right "0.5 0.5 0.5 0.5"
2616	top "1 0 0 0"
2617	bottom "0 1 0 0"
2618	}
2619	foreach name { -qw -qx -qy -qz } value $positions($side) {
2620	set _view($name) $value
2621	}
2622	set q [ViewToQuaternion]
2623	$_arcball quaternion $q
2624	SendCmd "camera orient $q"
2625	SendCmd "camera reset"
2626	set _view(-xpan) 0
2627	set _view(-ypan) 0
2628	set _view(-zoom) 1.0
2629	}
2630
2631	itcl::body Rappture::VtkHeightmapViewer::UpdateContourList {} {
2632	if {$_currentNumIsolines == 0} {
2633	set _contourList ""
2634	return
2635	}
2636	if { ![info exists _limits($_curFldName)] } {
2637	return
2638	}
2639	foreach { vmin vmax } $_limits($_curFldName) break
2640	set v [blt::vector create \#auto]
2641	$v seq $vmin $vmax [expr $_currentNumIsolines+2]
2642	$v delete end 0
2643	set _contourList [$v range 0 end]
2644	blt::vector destroy $v
2645	}

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