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source: branches/1.3/gui/scripts/vtkheightmapviewer.tcl @ 4706

Last change on this file since 4706 was 4706, checked in by ldelgass, 9 years ago
merge r4699 from trunk
File size: 87.2 KB

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1	# -- mode: tcl; indent-tabs-mode: nil --
2	# ----------------------------------------------------------------------
3	# COMPONENT: vtkheightmapviewer - Vtk heightmap viewer
4	#
5	# It connects to the Vtk server running on a rendering farm,
6	# transmits data, and displays the results.
7	# ======================================================================
8	# AUTHOR: Michael McLennan, Purdue University
9	# Copyright (c) 2004-2014 HUBzero Foundation, LLC
10	#
11	# See the file "license.terms" for information on usage and
12	# redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13	# ======================================================================
14	package require Itk
15	package require BLT
16	#package require Img
17
18	option add *VtkHeightmapViewer.width 4i widgetDefault
19	option add VtkHeightmapViewercursor crosshair widgetDefault
20	option add *VtkHeightmapViewer.height 4i widgetDefault
21	option add *VtkHeightmapViewer.foreground black widgetDefault
22	option add *VtkHeightmapViewer.controlBackground gray widgetDefault
23	option add *VtkHeightmapViewer.controlDarkBackground #999999 widgetDefault
24	option add *VtkHeightmapViewer.plotBackground black widgetDefault
25	option add *VtkHeightmapViewer.plotForeground white widgetDefault
26	option add *VtkHeightmapViewer.font \
27	--helvetica-medium-r-normal--12-* widgetDefault
28
29	# must use this name -- plugs into Rappture::resources::load
30	proc VtkHeightmapViewer_init_resources {} {
31	Rappture::resources::register \
32	vtkvis_server Rappture::VtkHeightmapViewer::SetServerList
33	}
34
35	itcl::class Rappture::VtkHeightmapViewer {
36	inherit Rappture::VisViewer
37
38	itk_option define -plotforeground plotForeground Foreground ""
39	itk_option define -plotbackground plotBackground Background ""
40	itk_option define -mode mode Mode "contour"
41
42	constructor { hostlist args } {
43	Rappture::VisViewer::constructor $hostlist
44	} {
45	# defined below
46	}
47	destructor {
48	# defined below
49	}
50	public proc SetServerList { namelist } {
51	Rappture::VisViewer::SetServerList "vtkvis" $namelist
52	}
53	public method add {dataobj {settings ""}}
54	public method camera {option args}
55	public method delete {args}
56	public method disconnect {}
57	public method download {option args}
58	public method get {args}
59	public method isconnected {}
60	public method parameters {title args} {
61	# do nothing
62	}
63	public method scale {args}
64
65	protected method CameraReset {}
66	protected method Connect {}
67	protected method CurrentDatasets {args}
68	protected method Disconnect {}
69	protected method DoResize {}
70	protected method DoRotate {}
71	protected method AdjustSetting {what {value ""}}
72	protected method AdjustMode {}
73	protected method InitSettings { args }
74	protected method Pan {option x y}
75	protected method Pick {x y}
76	protected method Rebuild {}
77	protected method ReceiveDataset { args }
78	protected method ReceiveImage { args }
79	protected method ReceiveLegend { colormap title min max size }
80	protected method Rotate {option x y}
81	protected method Zoom {option}
82
83	# The following methods are only used by this class.
84	private method BuildAxisTab {}
85	private method BuildCameraTab {}
86	private method BuildColormap { name }
87	private method BuildContourTab {}
88	private method BuildDownloadPopup { widget command }
89	private method Combo { option }
90	private method DrawLegend {}
91	private method EnterLegend { x y }
92	private method EventuallyRequestLegend {}
93	private method EventuallyResize { w h }
94	private method EventuallyRotate { q }
95	private method GetImage { args }
96	private method GetVtkData { args }
97	private method IsValidObject { dataobj }
98	private method LeaveLegend {}
99	private method MotionLegend { x y }
100	private method PanCamera {}
101	private method RequestLegend {}
102	private method SetCurrentColormap { color }
103	private method SetLegendTip { x y }
104	private method SetObjectStyle { dataobj comp }
105	private method GetHeightmapScale {}
106	private method ResetAxes {}
107	private method SetOrientation { side }
108	private method UpdateContourList {}
109
110	private variable _arcball ""
111	private variable _dlist "" ; # list of data objects
112	private variable _obj2datasets
113	private variable _obj2ovride ; # maps dataobj => style override
114	private variable _comp2scale; # maps dataset to the heightmap scale.
115	private variable _datasets ; # contains all the dataobj-component
116	; # datasets in the server
117	private variable _colormaps ; # contains all the colormaps
118	; # in the server.
119
120	# The name of the current colormap used. The colormap is global to all
121	# heightmaps displayed.
122	private variable _currentColormap ""
123	private variable _currentNumIsolines -1
124
125	private variable _maxScale 100; # This is the # of times the x-axis
126	# and y-axis ranges can differ before
127	# automatically turning on
128	# -stretchtofit
129
130	private variable _click ; # info used for rotate operations
131	private variable _limits ; # Holds overall limits for all dataobjs
132	# using the viewer.
133	private variable _view ; # view params for 3D view
134	private variable _settings
135	private variable _changed
136	private variable _initialStyle ""; # First found style in dataobjects.
137	private variable _reset 1; # Indicates if camera needs to be reset
138	# to starting position.
139	private variable _beforeConnect 1; # Indicates if camera needs to be reset
140	# to starting position.
141
142	private variable _first "" ; # This is the topmost dataset.
143	private variable _start 0
144	private variable _isolines
145	private variable _contourList ""
146
147	common _downloadPopup; # download options from popup
148	private common _hardcopy
149	private variable _width 0
150	private variable _height 0
151	private variable _legendWidth 0
152	private variable _legendHeight 0
153	private variable _resizePending 0
154	private variable _rotatePending 0
155	private variable _legendPending 0
156	private variable _fieldNames {}
157	private variable _fields
158	private variable _curFldName ""
159	private variable _curFldLabel ""
160	private variable _colorMode "scalar";# Mode of colormap (vmag or scalar)
161	}
162
163	itk::usual VtkHeightmapViewer {
164	keep -background -foreground -cursor -font
165	keep -plotbackground -plotforeground -mode
166	}
167
168	# ----------------------------------------------------------------------
169	# CONSTRUCTOR
170	# ----------------------------------------------------------------------
171	itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
172	set _serverType "vtkvis"
173
174	EnableWaitDialog 900
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	# Rotate event
184	$_dispatcher register !rotate
185	$_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
186
187	# Legend event
188	$_dispatcher register !legend
189	$_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; 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	qw 0.36
204	qx 0.25
205	qy 0.50
206	qz 0.70
207	zoom 1.0
208	xpan 0
209	ypan 0
210	ortho 0
211	}
212	set _arcball [blt::arcball create 100 100]
213	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
214	$_arcball quaternion $q
215
216	array set _settings {
217	-axisflymode "static"
218	-axislabels 1
219	-axisminorticks 1
220	-axisvisible 1
221	-colormap BCGYR
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 $env(SESSION)
767	}
768	lappend info "version" "$Rappture::version"
769	lappend info "build" "$Rappture::build"
770	lappend info "svnurl" "$Rappture::svnurl"
771	lappend info "installdir" "$Rappture::installdir"
772	lappend info "hub" [exec hostname]
773	lappend info "client" "vtkheightmapviewer"
774	lappend info "user" $user
775	lappend info "session" $session
776	SendCmd "clientinfo [list $info]"
777	}
778	set w [winfo width $itk_component(view)]
779	set h [winfo height $itk_component(view)]
780	EventuallyResize $w $h
781	}
782	return $result
783	}
784
785	#
786	# isconnected --
787	#
788	# Indicates if we are currently connected to the visualization server.
789	#
790	itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
791	return [VisViewer::IsConnected]
792	}
793
794	#
795	# disconnect --
796	#
797	itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
798	Disconnect
799	set _reset 1
800	}
801
802	#
803	# Disconnect --
804	#
805	# Clients use this method to disconnect from the current rendering
806	# server.
807	#
808	itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
809	VisViewer::Disconnect
810
811	$_dispatcher cancel !rebuild
812	$_dispatcher cancel !resize
813	$_dispatcher cancel !rotate
814	$_dispatcher cancel !legend
815	# disconnected -- no more data sitting on server
816	array unset _datasets
817	array unset _data
818	array unset _colormaps
819	array unset _obj2datasets
820	global readyForNextFrame
821	set readyForNextFrame 1
822	}
823
824	# ----------------------------------------------------------------------
825	# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
826	#
827	# Invoked automatically whenever the "image" command comes in from
828	# the rendering server. Indicates that binary image data with the
829	# specified <size> will follow.
830	# ----------------------------------------------------------------------
831	itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
832	global readyForNextFrame
833	set readyForNextFrame 1
834	array set info {
835	-token "???"
836	-bytes 0
837	-type image
838	}
839	array set info $args
840	set bytes [ReceiveBytes $info(-bytes)]
841	if { $info(-type) == "image" } {
842	if 0 {
843	set f [open "last.ppm" "w"]
844	puts $f $bytes
845	close $f
846	}
847	$_image(plot) configure -data $bytes
848	set time [clock seconds]
849	set date [clock format $time]
850	#puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"
851	if { $_start > 0 } {
852	set finish [clock clicks -milliseconds]
853	#puts stderr "round trip time [expr $finish -$_start] milliseconds"
854	set _start 0
855	}
856	} elseif { $info(type) == "print" } {
857	set tag $this-print-$info(-token)
858	set _hardcopy($tag) $bytes
859	}
860	}
861
862	#
863	# ReceiveDataset --
864	#
865	itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
866	if { ![isconnected] } {
867	return
868	}
869	set option [lindex $args 0]
870	switch -- $option {
871	"scalar" {
872	set option [lindex $args 1]
873	switch -- $option {
874	"world" {
875	foreach { x y z value tag } [lrange $args 2 end] break
876	}
877	"pixel" {
878	foreach { x y value tag } [lrange $args 2 end] break
879	}
880	}
881	}
882	"vector" {
883	set option [lindex $args 1]
884	switch -- $option {
885	"world" {
886	foreach { x y z vx vy vz tag } [lrange $args 2 end] break
887	}
888	"pixel" {
889	foreach { x y vx vy vz tag } [lrange $args 2 end] break
890	}
891	}
892	}
893	"names" {
894	foreach { name } [lindex $args 1] {
895	#puts stderr "Dataset: $name"
896	}
897	}
898	default {
899	error "unknown dataset option \"$option\" from server"
900	}
901	}
902	}
903
904	# ----------------------------------------------------------------------
905	# USAGE: Rebuild
906	#
907	# Called automatically whenever something changes that affects the
908	# data in the widget. Clears any existing data and rebuilds the
909	# widget to display new data.
910	# ----------------------------------------------------------------------
911	itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
912	set w [winfo width $itk_component(view)]
913	set h [winfo height $itk_component(view)]
914	if { $w < 2 \|\| $h < 2 } {
915	$_dispatcher event -idle !rebuild
916	return
917	}
918
919	# Turn on buffering of commands to the server. We don't want to
920	# be preempted by a server disconnect/reconnect (which automatically
921	# generates a new call to Rebuild).
922	StartBufferingCommands
923
924	if { $_width != $w \|\| $_height != $h \|\| $_reset } {
925	set _width $w
926	set _height $h
927	$_arcball resize $w $h
928	DoResize
929	if { $_settings(-stretchtofit) } {
930	AdjustSetting -stretchtofit
931	}
932	}
933	if { $_reset } {
934	#
935	# Reset the camera and other view parameters
936	#
937	InitSettings -isheightmap -background
938
939	# Let's see how this goes. I think it's preferable to overloading the
940	# axis title with the exponent.
941	SendCmd "axis exp 0 0 0 1"
942
943	SendCmd "axis lrot z 90"
944	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
945	$_arcball quaternion $q
946	if {$_settings(-isheightmap) } {
947	if { $_view(ortho)} {
948	SendCmd "camera mode ortho"
949	} else {
950	SendCmd "camera mode persp"
951	}
952	DoRotate
953	SendCmd "camera reset"
954	}
955	PanCamera
956	StopBufferingCommands
957	SendCmd "imgflush"
958	StartBufferingCommands
959	}
960
961	set _first ""
962	# Start off with no datasets are visible.
963	SendCmd "dataset visible 0"
964	set scale [GetHeightmapScale]
965	foreach dataobj [get -objects] {
966	if { [info exists _obj2ovride($dataobj-raise)] && $_first == "" } {
967	set _first $dataobj
968	}
969	set _obj2datasets($dataobj) ""
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	puts $f $bytes
977	close $f
978	}
979	set length [string length $bytes]
980	if { $_reportClientInfo } {
981	set info {}
982	lappend info "tool_id" [$dataobj hints toolId]
983	lappend info "tool_name" [$dataobj hints toolName]
984	lappend info "tool_version" [$dataobj hints toolRevision]
985	lappend info "tool_title" [$dataobj hints toolTitle]
986	lappend info "dataset_label" [$dataobj hints label]
987	lappend info "dataset_size" $length
988	lappend info "dataset_tag" $tag
989	SendCmd [list "clientinfo" $info]
990	}
991	SendCmd "dataset add $tag data follows $length"
992	append _outbuf $bytes
993	set _datasets($tag) 1
994	SetObjectStyle $dataobj $comp
995	}
996	lappend _obj2datasets($dataobj) $tag
997	if { [info exists _obj2ovride($dataobj-raise)] } {
998	# Setting dataset visible enables outline
999	# and heightmap
1000	SendCmd "dataset visible 1 $tag"
1001	}
1002	if { ![info exists _comp2scale($tag)] \|\|
1003	$_comp2scale($tag) != $scale } {
1004	SendCmd "heightmap heightscale $scale $tag"
1005	set _comp2scale($tag) $scale
1006	}
1007	}
1008	}
1009	if { $_first != "" } {
1010	$itk_component(field) choices delete 0 end
1011	$itk_component(fieldmenu) delete 0 end
1012	array unset _fields
1013	set _curFldName ""
1014	foreach cname [$_first components] {
1015	foreach fname [$_first fieldnames $cname] {
1016	if { [info exists _fields($fname)] } {
1017	continue
1018	}
1019	foreach { label units components } \
1020	[$_first fieldinfo $fname] break
1021	$itk_component(field) choices insert end "$fname" "$label"
1022	$itk_component(fieldmenu) add radiobutton -label "$label" \
1023	-value $label -variable [itcl::scope _curFldLabel] \
1024	-selectcolor red \
1025	-activebackground $itk_option(-plotbackground) \
1026	-activeforeground $itk_option(-plotforeground) \
1027	-font "Arial 8" \
1028	-command [itcl::code $this Combo invoke]
1029	set _fields($fname) [list $label $units $components]
1030	if { $_curFldName == "" } {
1031	set _curFldName $fname
1032	set _curFldLabel $label
1033	}
1034	}
1035	}
1036	$itk_component(field) value $_curFldLabel
1037	}
1038	InitSettings -stretchtofit -outline
1039
1040	if { $_reset } {
1041	SendCmd "axis tickpos outside"
1042	foreach axis { x y z } {
1043	SendCmd "axis lformat $axis %g"
1044	}
1045
1046	foreach axis { x y z } {
1047	if { $axis == "z" } {
1048	set label [$_first hints label]
1049	} else {
1050	set label [$_first hints ${axis}label]
1051	}
1052	if { $label == "" } {
1053	if {$axis == "z"} {
1054	if { [string match "component*" $_curFldName] } {
1055	set label [string toupper $axis]
1056	} else {
1057	set label $_curFldLabel
1058	}
1059	} else {
1060	set label [string toupper $axis]
1061	}
1062	}
1063	# May be a space in the axis label.
1064	SendCmd [list axis name $axis $label]
1065
1066	if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1067	set units [lindex $_fields($_curFldName) 1]
1068	} else {
1069	set units [$_first hints ${axis}units]
1070	}
1071	if { $units != "" } {
1072	# May be a space in the axis units.
1073	SendCmd [list axis units $axis $units]
1074	}
1075	}
1076	#
1077	# Reset the camera and other view parameters
1078	#
1079	ResetAxes
1080	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1081	$_arcball quaternion $q
1082	if {$_settings(-isheightmap) } {
1083	if { $_view(ortho)} {
1084	SendCmd "camera mode ortho"
1085	} else {
1086	SendCmd "camera mode persp"
1087	}
1088	DoRotate
1089	SendCmd "camera reset"
1090	}
1091	PanCamera
1092	InitSettings -xgrid -ygrid -zgrid \
1093	-axisvisible -axislabels -heightmapscale -field -isheightmap \
1094	-numisolines
1095	if { [array size _fields] < 2 } {
1096	catch {blt::table forget $itk_component(field) $itk_component(field_l)}
1097	}
1098	RequestLegend
1099	set _reset 0
1100	}
1101	global readyForNextFrame
1102	set readyForNextFrame 0; # Don't advance to the next frame
1103
1104	# Actually write the commands to the server socket. If it fails, we don't
1105	# care. We're finished here.
1106	blt::busy hold $itk_component(hull)
1107	StopBufferingCommands
1108	blt::busy release $itk_component(hull)
1109	}
1110
1111	# ----------------------------------------------------------------------
1112	# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1113	#
1114	# Returns a list of server IDs for the current datasets being displayed. This
1115	# is normally a single ID, but it might be a list of IDs if the current data
1116	# object has multiple components.
1117	# ----------------------------------------------------------------------
1118	itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1119	set flag [lindex $args 0]
1120	switch -- $flag {
1121	"-all" {
1122	if { [llength $args] > 1 } {
1123	error "CurrentDatasets: can't specify dataobj after \"-all\""
1124	}
1125	set dlist [get -objects]
1126	}
1127	"-visible" {
1128	if { [llength $args] > 1 } {
1129	set dlist {}
1130	set args [lrange $args 1 end]
1131	foreach dataobj $args {
1132	if { [info exists _obj2ovride($dataobj-raise)] } {
1133	lappend dlist $dataobj
1134	}
1135	}
1136	} else {
1137	set dlist [get -visible]
1138	}
1139	}
1140	default {
1141	set dlist $args
1142	}
1143	}
1144	set rlist ""
1145	foreach dataobj $dlist {
1146	foreach comp [$dataobj components] {
1147	set tag $dataobj-$comp
1148	if { [info exists _datasets($tag)] && $_datasets($tag) } {
1149	lappend rlist $tag
1150	}
1151	}
1152	}
1153	return $rlist
1154	}
1155
1156	itcl::body Rappture::VtkHeightmapViewer::CameraReset {} {
1157	array set _view {
1158	qw 0.36
1159	qx 0.25
1160	qy 0.50
1161	qz 0.70
1162	zoom 1.0
1163	xpan 0
1164	ypan 0
1165	}
1166	if { $_first != "" } {
1167	set location [$_first hints camera]
1168	if { $location != "" } {
1169	array set _view $location
1170	}
1171	}
1172	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1173	$_arcball quaternion $q
1174	if {$_settings(-isheightmap) } {
1175	DoRotate
1176	}
1177	SendCmd "camera reset"
1178	}
1179
1180	# ----------------------------------------------------------------------
1181	# USAGE: Zoom in
1182	# USAGE: Zoom out
1183	# USAGE: Zoom reset
1184	#
1185	# Called automatically when the user clicks on one of the zoom
1186	# controls for this widget. Changes the zoom for the current view.
1187	# ----------------------------------------------------------------------
1188	itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1189	switch -- $option {
1190	"in" {
1191	set _view(zoom) [expr {$_view(zoom)*1.25}]
1192	SendCmd "camera zoom $_view(zoom)"
1193	}
1194	"out" {
1195	set _view(zoom) [expr {$_view(zoom)*0.8}]
1196	SendCmd "camera zoom $_view(zoom)"
1197	}
1198	"reset" {
1199	array set _view {
1200	zoom 1.0
1201	xpan 0
1202	ypan 0
1203	}
1204	SendCmd "camera reset"
1205	}
1206	}
1207	}
1208
1209	itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1210	set x $_view(xpan)
1211	set y $_view(ypan)
1212	SendCmd "camera pan $x $y"
1213	}
1214
1215
1216	# ----------------------------------------------------------------------
1217	# USAGE: Rotate click <x> <y>
1218	# USAGE: Rotate drag <x> <y>
1219	# USAGE: Rotate release <x> <y>
1220	#
1221	# Called automatically when the user clicks/drags/releases in the
1222	# plot area. Moves the plot according to the user's actions.
1223	# ----------------------------------------------------------------------
1224	itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1225	switch -- $option {
1226	"click" {
1227	$itk_component(view) configure -cursor fleur
1228	set _click(x) $x
1229	set _click(y) $y
1230	}
1231	"drag" {
1232	if {[array size _click] == 0} {
1233	Rotate click $x $y
1234	} else {
1235	set w [winfo width $itk_component(view)]
1236	set h [winfo height $itk_component(view)]
1237	if {$w <= 0 \|\| $h <= 0} {
1238	return
1239	}
1240
1241	if {[catch {
1242	# this fails sometimes for no apparent reason
1243	set dx [expr {double($x-$_click(x))/$w}]
1244	set dy [expr {double($y-$_click(y))/$h}]
1245	}]} {
1246	return
1247	}
1248	if { $dx == 0 && $dy == 0 } {
1249	return
1250	}
1251	set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1252	EventuallyRotate $q
1253	set _click(x) $x
1254	set _click(y) $y
1255	}
1256	}
1257	"release" {
1258	Rotate drag $x $y
1259	$itk_component(view) configure -cursor ""
1260	catch {unset _click}
1261	}
1262	default {
1263	error "bad option \"$option\": should be click, drag, release"
1264	}
1265	}
1266	}
1267
1268	itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1269	foreach tag [CurrentDatasets -visible] {
1270	SendCmd "dataset getscalar pixel $x $y $tag"
1271	}
1272	}
1273
1274	# ----------------------------------------------------------------------
1275	# USAGE: $this Pan click x y
1276	# $this Pan drag x y
1277	# $this Pan release x y
1278	#
1279	# Called automatically when the user clicks on one of the zoom
1280	# controls for this widget. Changes the zoom for the current view.
1281	# ----------------------------------------------------------------------
1282	itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1283	switch -- $option {
1284	"set" {
1285	set w [winfo width $itk_component(view)]
1286	set h [winfo height $itk_component(view)]
1287	set x [expr $x / double($w)]
1288	set y [expr $y / double($h)]
1289	set _view(xpan) [expr $_view(xpan) + $x]
1290	set _view(ypan) [expr $_view(ypan) + $y]
1291	PanCamera
1292	return
1293	}
1294	"click" {
1295	set _click(x) $x
1296	set _click(y) $y
1297	$itk_component(view) configure -cursor hand1
1298	}
1299	"drag" {
1300	if { ![info exists _click(x)] } {
1301	set _click(x) $x
1302	}
1303	if { ![info exists _click(y)] } {
1304	set _click(y) $y
1305	}
1306	set w [winfo width $itk_component(view)]
1307	set h [winfo height $itk_component(view)]
1308	set dx [expr ($_click(x) - $x)/double($w)]
1309	set dy [expr ($_click(y) - $y)/double($h)]
1310	set _click(x) $x
1311	set _click(y) $y
1312	set _view(xpan) [expr $_view(xpan) - $dx]
1313	set _view(ypan) [expr $_view(ypan) - $dy]
1314	PanCamera
1315	}
1316	"release" {
1317	Pan drag $x $y
1318	$itk_component(view) configure -cursor ""
1319	}
1320	default {
1321	error "unknown option \"$option\": should set, click, drag, or release"
1322	}
1323	}
1324	}
1325
1326	# ----------------------------------------------------------------------
1327	# USAGE: InitSettings <what> ?<value>?
1328	#
1329	# Used internally to update rendering settings whenever parameters
1330	# change in the popup settings panel. Sends the new settings off
1331	# to the back end.
1332	# ----------------------------------------------------------------------
1333	itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1334	foreach spec $args {
1335	if { [info exists _settings($_first${spec})] } {
1336	# Reset global setting with dataobj specific setting
1337	set _settings($spec) $_settings($_first${spec})
1338	}
1339	AdjustSetting $spec
1340	}
1341	}
1342
1343	#
1344	# AdjustSetting --
1345	#
1346	# Changes/updates a specific setting in the widget. There are
1347	# usually user-setable option. Commands are sent to the render
1348	# server.
1349	#
1350	itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1351	if { $_beforeConnect } {
1352	return
1353	}
1354	switch -- $what {
1355	"-axisflymode" {
1356	set mode [$itk_component(axisflymode) value]
1357	set mode [$itk_component(axisflymode) translate $mode]
1358	set _settings($what) $mode
1359	SendCmd "axis flymode $mode"
1360	}
1361	"-axislabels" {
1362	set bool $_settings($what)
1363	SendCmd "axis labels all $bool"
1364	}
1365	"-axisminorticks" {
1366	set bool $_settings($what)
1367	foreach axis { x y z } {
1368	SendCmd "axis minticks ${axis} $bool"
1369	}
1370	}
1371	"-axisvisible" {
1372	set bool $_settings($what)
1373	SendCmd "axis visible all $bool"
1374	}
1375	"-xgrid" - "-ygrid" - "-zgrid" {
1376	set axis [string tolower [string range $what 1 1]]
1377	set bool $_settings($what)
1378	SendCmd "axis grid $axis $bool"
1379	}
1380	"-background" {
1381	set bg [$itk_component(background) value]
1382	array set fgcolors {
1383	"black" "white"
1384	"white" "black"
1385	"grey" "black"
1386	}
1387	set fg $fgcolors($bg)
1388	configure -plotbackground $bg -plotforeground $fg
1389	$itk_component(view) delete "legend"
1390	SendCmd "screen bgcolor [Color2RGB $bg]"
1391	SendCmd "outline color [Color2RGB $fg]"
1392	SendCmd "axis color all [Color2RGB $fg]"
1393	DrawLegend
1394	}
1395	"-colormap" {
1396	set _changed($what) 1
1397	StartBufferingCommands
1398	set color [$itk_component(colormap) value]
1399	set _settings($what) $color
1400	if { $color == "none" } {
1401	if { $_settings(-colormapvisible) } {
1402	SendCmd "heightmap surface 0"
1403	set _settings(-colormapvisible) 0
1404	}
1405	} else {
1406	if { !$_settings(-colormapvisible) } {
1407	SendCmd "heightmap surface 1"
1408	set _settings(-colormapvisible) 1
1409	}
1410	SetCurrentColormap $color
1411	if {$_settings(-colormapdiscrete)} {
1412	set numColors [expr $_settings(-numisolines) + 1]
1413	SendCmd "colormap res $numColors $color"
1414	}
1415	}
1416	StopBufferingCommands
1417	EventuallyRequestLegend
1418	}
1419	"-colormapvisible" {
1420	set bool $_settings($what)
1421	SendCmd "heightmap surface $bool"
1422	}
1423	"-colormapdiscrete" {
1424	set bool $_settings($what)
1425	set numColors [expr $_settings(-numisolines) + 1]
1426	StartBufferingCommands
1427	if {$bool} {
1428	SendCmd "colormap res $numColors"
1429	# Discrete colormap requires preinterp on
1430	SendCmd "heightmap preinterp on"
1431	} else {
1432	SendCmd "colormap res default"
1433	# FIXME: add setting for preinterp (default on)
1434	SendCmd "heightmap preinterp on"
1435	}
1436	StopBufferingCommands
1437	EventuallyRequestLegend
1438	}
1439	"-edges" {
1440	set bool $_settings($what)
1441	SendCmd "heightmap edges $bool"
1442	}
1443	"-field" {
1444	set label [$itk_component(field) value]
1445	set fname [$itk_component(field) translate $label]
1446	set _settings($what) $fname
1447	if { [info exists _fields($fname)] } {
1448	foreach { label units components } $_fields($fname) break
1449	if { $components > 1 } {
1450	set _colorMode vmag
1451	} else {
1452	set _colorMode scalar
1453	}
1454	set _curFldName $fname
1455	set _curFldLabel $label
1456	} else {
1457	puts stderr "unknown field \"$fname\""
1458	return
1459	}
1460	set label [$_first hints label]
1461	if { $label == "" } {
1462	if { [string match "component*" $_curFldName] } {
1463	set label Z
1464	} else {
1465	set label $_curFldLabel
1466	}
1467	}
1468	# May be a space in the axis label.
1469	SendCmd [list axis name z $label]
1470
1471	if { [$_first hints zunits] == "" } {
1472	set units [lindex $_fields($_curFldName) 1]
1473	} else {
1474	set units [$_first hints zunits]
1475	}
1476	if { $units != "" } {
1477	# May be a space in the axis units.
1478	SendCmd [list axis units z $units]
1479	}
1480	# Get the new limits because the field changed.
1481	ResetAxes
1482	SendCmd "dataset scalar $_curFldName"
1483	SendCmd "heightmap colormode scalar $_curFldName"
1484	Zoom reset
1485	UpdateContourList
1486	DrawLegend
1487	}
1488	"-heightmapscale" {
1489	if { $_settings(-isheightmap) } {
1490	set scale [GetHeightmapScale]
1491	# Have to set the datasets individually because we are
1492	# tracking them in _comp2scale.
1493	foreach dataset [CurrentDatasets -all] {
1494	SendCmd "heightmap heightscale $scale $dataset"
1495	set _comp2scale($dataset) $scale
1496	}
1497	ResetAxes
1498	}
1499	}
1500	"-isheightmap" {
1501	set bool $_settings($what)
1502	set c $itk_component(view)
1503	StartBufferingCommands
1504	# Fix heightmap scale: 0 for contours, 1 for heightmaps.
1505	if { $bool } {
1506	set _settings(-heightmapscale) 50
1507	set _settings(-opacity) $_settings(-saveopacity)
1508	set _settings(-lighting) $_settings(-savelighting)
1509	set _settings(-outline) 0
1510	} else {
1511	set _settings(-heightmapscale) 0
1512	set _settings(-lighting) 0
1513	set _settings(-opacity) 100
1514	set _settings(-outline) $_settings(-saveoutline)
1515	}
1516	InitSettings -lighting -opacity -outline
1517	set scale [GetHeightmapScale]
1518	# Have to set the datasets individually because we are
1519	# tracking them in _comp2scale.
1520	foreach dataset [CurrentDatasets -all] {
1521	SendCmd "heightmap heightscale $scale $dataset"
1522	set _comp2scale($dataset) $scale
1523	}
1524	if { $bool } {
1525	$itk_component(lighting) configure -state normal
1526	$itk_component(opacity) configure -state normal
1527	$itk_component(scale) configure -state normal
1528	$itk_component(opacity_l) configure -state normal
1529	$itk_component(scale_l) configure -state normal
1530	$itk_component(outline) configure -state disabled
1531	if {$_view(ortho)} {
1532	SendCmd "camera mode ortho"
1533	} else {
1534	SendCmd "camera mode persp"
1535	}
1536	} else {
1537	$itk_component(lighting) configure -state disabled
1538	$itk_component(opacity) configure -state disabled
1539	$itk_component(scale) configure -state disabled
1540	$itk_component(opacity_l) configure -state disabled
1541	$itk_component(scale_l) configure -state disabled
1542	$itk_component(outline) configure -state normal
1543	SendCmd "camera mode image"
1544	}
1545	if {$_settings(-stretchtofit)} {
1546	if {$scale == 0} {
1547	SendCmd "camera aspect window"
1548	} else {
1549	SendCmd "camera aspect square"
1550	}
1551	}
1552	ResetAxes
1553	if { $bool } {
1554	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1555	$_arcball quaternion $q
1556	SendCmd "camera orient $q"
1557	} else {
1558	bind $c <ButtonPress-1> {}
1559	bind $c <B1-Motion> {}
1560	bind $c <ButtonRelease-1> {}
1561	}
1562	Zoom reset
1563	# Fix the mouse bindings for rotation/panning and the
1564	# camera mode. Ideally we'd create a bindtag for these.
1565	if { $bool } {
1566	# Bindings for rotation via mouse
1567	bind $c <ButtonPress-1> \
1568	[itcl::code $this Rotate click %x %y]
1569	bind $c <B1-Motion> \
1570	[itcl::code $this Rotate drag %x %y]
1571	bind $c <ButtonRelease-1> \
1572	[itcl::code $this Rotate release %x %y]
1573	}
1574	StopBufferingCommands
1575	}
1576	"-isolinecolor" {
1577	set color [$itk_component(isolinecolor) value]
1578	if { $color == "none" } {
1579	if { $_settings(-isolinesvisible) } {
1580	SendCmd "heightmap isolines 0"
1581	set _settings(-isolinesvisible) 0
1582	}
1583	} else {
1584	if { !$_settings(-isolinesvisible) } {
1585	SendCmd "heightmap isolines 1"
1586	set _settings(-isolinesvisible) 1
1587	}
1588	SendCmd "heightmap isolinecolor [Color2RGB $color]"
1589	}
1590	DrawLegend
1591	}
1592	"-isolinesvisible" {
1593	set bool $_settings($what)
1594	SendCmd "heightmap isolines $bool"
1595	DrawLegend
1596	}
1597	"-legendvisible" {
1598	if { !$_settings($what) } {
1599	$itk_component(view) delete legend
1600	}
1601	DrawLegend
1602	}
1603	"-lighting" {
1604	if { $_settings(-isheightmap) } {
1605	set _settings(-savelighting) $_settings($what)
1606	set bool $_settings($what)
1607	SendCmd "heightmap lighting $bool"
1608	} else {
1609	SendCmd "heightmap lighting 0"
1610	}
1611	}
1612	"-numisolines" {
1613	set _settings($what) [$itk_component(numisolines) value]
1614	set _currentNumIsolines $_settings($what)
1615	UpdateContourList
1616	set _changed($what) 1
1617	SendCmd "heightmap contourlist [list $_contourList]"
1618	if {$_settings(-colormapdiscrete)} {
1619	set numColors [expr $_settings($what) + 1]
1620	SendCmd "colormap res $numColors"
1621	EventuallyRequestLegend
1622	} else {
1623	DrawLegend
1624	}
1625	}
1626	"-opacity" {
1627	set _changed($what) 1
1628	set val [expr $_settings($what) * 0.01]
1629	if { $_settings(-isheightmap) } {
1630	set _settings(-saveopacity) $_settings($what)
1631	SendCmd "heightmap opacity $val"
1632	} else {
1633	SendCmd "heightmap opacity 1.0"
1634	}
1635	}
1636	"-outline" {
1637	if { $_settings(-isheightmap) } {
1638	SendCmd "outline visible 0"
1639	} else {
1640	set _settings(-saveoutline) $_settings($what)
1641	set bool $_settings($what)
1642	SendCmd "outline visible $bool"
1643	}
1644	}
1645	"-stretchtofit" {
1646	set bool $_settings($what)
1647	if { $bool } {
1648	set heightScale [GetHeightmapScale]
1649	if {$heightScale == 0} {
1650	SendCmd "camera aspect window"
1651	} else {
1652	SendCmd "camera aspect square"
1653	}
1654	} else {
1655	SendCmd "camera aspect native"
1656	}
1657	Zoom reset
1658	}
1659	"-wireframe" {
1660	set bool $_settings($what)
1661	SendCmd "heightmap wireframe $bool"
1662	}
1663	default {
1664	error "don't know how to fix $what"
1665	}
1666	}
1667	}
1668
1669	#
1670	# RequestLegend --
1671	#
1672	# Request a new legend from the server. The size of the legend
1673	# is determined from the height of the canvas.
1674	#
1675	# This should be called when
1676	# 1. A new current colormap is set.
1677	# 2. Window is resized.
1678	# 3. The limits of the data have changed. (Just need a redraw).
1679	# 4. Number of isolines have changed. (Just need a redraw).
1680	# 5. Legend becomes visible (Just need a redraw).
1681	#
1682	itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1683	set _legendPending 0
1684	set font "Arial 8"
1685	set w 12
1686	set lineht [font metrics $font -linespace]
1687	# color ramp height = (canvas height) - (min and max value lines) - 2
1688	set h [expr {$_height - 2 * ($lineht + 2)}]
1689	set _legendHeight $h
1690
1691	set fname $_curFldName
1692	if { [string match "component*" $fname] } {
1693	set title ""
1694	} else {
1695	if { [info exists _fields($fname)] } {
1696	foreach { title units } $_fields($fname) break
1697	if { $units != "" } {
1698	set title [format "%s (%s)" $title $units]
1699	}
1700	} else {
1701	set title $fname
1702	}
1703	}
1704	# If there's a title too, substract one more line
1705	if { $title != "" } {
1706	incr h -$lineht
1707	}
1708	if { $h < 1 } {
1709	return
1710	}
1711	# Set the legend on the first heightmap dataset.
1712	if { $_currentColormap != "" } {
1713	set cmap $_currentColormap
1714	SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1715	}
1716	}
1717
1718	#
1719	# ResetAxes --
1720	#
1721	# Set axis z bounds and range
1722	#
1723	itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1724	if { ![info exists _limits($_curFldName)]} {
1725	SendCmd "dataset maprange all"
1726	SendCmd "axis autorange z on"
1727	SendCmd "axis autobounds z on"
1728	return
1729	}
1730	foreach { xmin xmax } $_limits(x) break
1731	foreach { ymin ymax } $_limits(y) break
1732	foreach { vmin vmax } $_limits($_curFldName) break
1733
1734	global tcl_precision
1735	set tcl_precision 17
1736	set xr [expr $xmax - $xmin]
1737	set yr [expr $ymax - $ymin]
1738	set vr [expr $vmax - $vmin]
1739	set r [expr ($yr > $xr) ? $yr : $xr]
1740	if { $vr < 1.0e-17 } {
1741	set dataScale 1.0
1742	} else {
1743	set dataScale [expr $r / $vr]
1744	}
1745	set heightScale [GetHeightmapScale]
1746	set bmin [expr $heightScale * $dataScale * $vmin]
1747	set bmax [expr $heightScale * $dataScale * $vmax]
1748	if {$heightScale > 0} {
1749	set zpos [expr - $bmin]
1750	SendCmd "heightmap pos 0 0 $zpos"
1751	} else {
1752	SendCmd "heightmap pos 0 0 0"
1753	}
1754	set bmax [expr $bmax - $bmin]
1755	set bmin 0
1756	SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1757	SendCmd "axis bounds z $bmin $bmax"
1758	SendCmd "axis range z $_limits($_curFldName)"
1759	}
1760
1761	#
1762	# SetCurrentColormap --
1763	#
1764	itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1765	# Keep track of the colormaps that we build.
1766	if { $name != "none" && ![info exists _colormaps($name)] } {
1767	BuildColormap $name
1768	set _colormaps($name) 1
1769	}
1770	set _currentColormap $name
1771	SendCmd "heightmap colormap $_currentColormap"
1772	}
1773
1774
1775	#
1776	# BuildColormap --
1777	#
1778	# Build the designated colormap on the server.
1779	#
1780	itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1781	set cmap [ColorsToColormap $name]
1782	if { [llength $cmap] == 0 } {
1783	set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1784	}
1785	set wmap "0.0 1.0 1.0 1.0"
1786	SendCmd "colormap add $name { $cmap } { $wmap }"
1787	}
1788
1789	# ----------------------------------------------------------------------
1790	# CONFIGURATION OPTION: -mode
1791	# ----------------------------------------------------------------------
1792	itcl::configbody Rappture::VtkHeightmapViewer::mode {
1793	switch -- $itk_option(-mode) {
1794	"heightmap" {
1795	set _settings(-isheightmap) 1
1796	}
1797	"contour" {
1798	set _settings(-isheightmap) 0
1799	}
1800	default {
1801	error "unknown mode settings \"$itk_option(-mode)\""
1802	}
1803	}
1804	if { !$_reset } {
1805	AdjustSetting -isheightmap
1806	}
1807	}
1808
1809	# ----------------------------------------------------------------------
1810	# CONFIGURATION OPTION: -plotbackground
1811	# ----------------------------------------------------------------------
1812	itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1813	if { [isconnected] } {
1814	set rgb [Color2RGB $itk_option(-plotbackground)]
1815	if { !$_reset } {
1816	SendCmd "screen bgcolor $rgb"
1817	}
1818	$itk_component(view) configure -background $itk_option(-plotbackground)
1819	}
1820	}
1821
1822	# ----------------------------------------------------------------------
1823	# CONFIGURATION OPTION: -plotforeground
1824	# ----------------------------------------------------------------------
1825	itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1826	if { [isconnected] } {
1827	set rgb [Color2RGB $itk_option(-plotforeground)]
1828	if { !$_reset } {
1829	SendCmd "outline color $rgb"
1830	SendCmd "axis color all $rgb"
1831	}
1832	}
1833	}
1834
1835	itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1836
1837	set fg [option get $itk_component(hull) font Font]
1838	#set bfg [option get $itk_component(hull) boldFont Font]
1839
1840	set inner [$itk_component(main) insert end \
1841	-title "Contour/Surface Settings" \
1842	-icon [Rappture::icon contour2]]
1843	$inner configure -borderwidth 4
1844
1845	checkbutton $inner.legend \
1846	-text "Legend" \
1847	-variable [itcl::scope _settings(-legendvisible)] \
1848	-command [itcl::code $this AdjustSetting -legendvisible] \
1849	-font "Arial 9"
1850
1851	checkbutton $inner.wireframe \
1852	-text "Wireframe" \
1853	-variable [itcl::scope _settings(-wireframe)] \
1854	-command [itcl::code $this AdjustSetting -wireframe] \
1855	-font "Arial 9"
1856
1857	itk_component add lighting {
1858	checkbutton $inner.lighting \
1859	-text "Enable Lighting" \
1860	-variable [itcl::scope _settings(-lighting)] \
1861	-command [itcl::code $this AdjustSetting -lighting] \
1862	-font "Arial 9"
1863	} {
1864	ignore -font
1865	}
1866	checkbutton $inner.edges \
1867	-text "Edges" \
1868	-variable [itcl::scope _settings(-edges)] \
1869	-command [itcl::code $this AdjustSetting -edges] \
1870	-font "Arial 9"
1871
1872	itk_component add outline {
1873	checkbutton $inner.outline \
1874	-text "Outline" \
1875	-variable [itcl::scope _settings(-outline)] \
1876	-command [itcl::code $this AdjustSetting -outline] \
1877	-font "Arial 9"
1878	} {
1879	ignore -font
1880	}
1881	checkbutton $inner.stretch \
1882	-text "Stretch to fit" \
1883	-variable [itcl::scope _settings(-stretchtofit)] \
1884	-command [itcl::code $this AdjustSetting -stretchtofit] \
1885	-font "Arial 9"
1886
1887	checkbutton $inner.isolines \
1888	-text "Isolines" \
1889	-variable [itcl::scope _settings(-isolinesvisible)] \
1890	-command [itcl::code $this AdjustSetting -isolinesvisible] \
1891	-font "Arial 9"
1892
1893	checkbutton $inner.colormapDiscrete \
1894	-text "Discrete Colormap" \
1895	-variable [itcl::scope _settings(-colormapdiscrete)] \
1896	-command [itcl::code $this AdjustSetting -colormapdiscrete] \
1897	-font "Arial 9"
1898
1899	itk_component add field_l {
1900	label $inner.field_l -text "Field" -font "Arial 9"
1901	} {
1902	ignore -font
1903	}
1904	itk_component add field {
1905	Rappture::Combobox $inner.field -width 10 -editable no
1906	}
1907	bind $inner.field <<Value>> \
1908	[itcl::code $this AdjustSetting -field]
1909
1910	label $inner.colormap_l -text "Colormap" -font "Arial 9"
1911	itk_component add colormap {
1912	Rappture::Combobox $inner.colormap -width 10 -editable no
1913	}
1914	$inner.colormap choices insert end [GetColormapList -includeNone]
1915	$itk_component(colormap) value $_settings(-colormap)
1916	bind $inner.colormap <<Value>> \
1917	[itcl::code $this AdjustSetting -colormap]
1918
1919	label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1920	itk_component add isolinecolor {
1921	Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1922	}
1923	$inner.isolinecolor choices insert end \
1924	"black" "black" \
1925	"blue" "blue" \
1926	"cyan" "cyan" \
1927	"green" "green" \
1928	"grey" "grey" \
1929	"magenta" "magenta" \
1930	"orange" "orange" \
1931	"red" "red" \
1932	"white" "white" \
1933	"none" "none"
1934
1935	$itk_component(isolinecolor) value $_settings(-isolinecolor)
1936	bind $inner.isolinecolor <<Value>> \
1937	[itcl::code $this AdjustSetting -isolinecolor]
1938
1939	label $inner.background_l -text "Background Color" -font "Arial 9"
1940	itk_component add background {
1941	Rappture::Combobox $inner.background -width 10 -editable no
1942	}
1943	$inner.background choices insert end \
1944	"black" "black" \
1945	"white" "white" \
1946	"grey" "grey"
1947
1948	$itk_component(background) value "white"
1949	bind $inner.background <<Value>> \
1950	[itcl::code $this AdjustSetting -background]
1951
1952	itk_component add opacity_l {
1953	label $inner.opacity_l -text "Opacity" -font "Arial 9"
1954	} {
1955	ignore -font
1956	}
1957	itk_component add opacity {
1958	::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1959	-variable [itcl::scope _settings(-opacity)] \
1960	-showvalue off \
1961	-command [itcl::code $this AdjustSetting -opacity]
1962	}
1963	itk_component add scale_l {
1964	label $inner.scale_l -text "Scale" -font "Arial 9"
1965	} {
1966	ignore -font
1967	}
1968	itk_component add scale {
1969	::scale $inner.scale -from 0 -to 100 -orient horizontal \
1970	-variable [itcl::scope _settings(-heightmapscale)] \
1971	-showvalue off \
1972	-command [itcl::code $this AdjustSetting -heightmapscale]
1973	}
1974	label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1975	itk_component add numisolines {
1976	Rappture::Spinint $inner.numisolines \
1977	-min 0 -max 50 -font "arial 9"
1978	}
1979	$itk_component(numisolines) value $_settings(-numisolines)
1980	bind $itk_component(numisolines) <<Value>> \
1981	[itcl::code $this AdjustSetting -numisolines]
1982
1983	frame $inner.separator1 -height 2 -relief sunken -bd 1
1984	frame $inner.separator2 -height 2 -relief sunken -bd 1
1985
1986	blt::table $inner \
1987	0,0 $inner.field_l -anchor w -pady 2 \
1988	0,1 $inner.field -anchor w -pady 2 -fill x \
1989	1,0 $inner.colormap_l -anchor w -pady 2 \
1990	1,1 $inner.colormap -anchor w -pady 2 -fill x \
1991	2,0 $inner.isolinecolor_l -anchor w -pady 2 \
1992	2,1 $inner.isolinecolor -anchor w -pady 2 -fill x \
1993	3,0 $inner.background_l -anchor w -pady 2 \
1994	3,1 $inner.background -anchor w -pady 2 -fill x \
1995	4,0 $inner.numisolines_l -anchor w -pady 2 \
1996	4,1 $inner.numisolines -anchor w -pady 2 \
1997	5,0 $inner.stretch -anchor w -pady 2 -cspan 2 \
1998	6,0 $inner.edges -anchor w -pady 2 -cspan 2 \
1999	7,0 $inner.legend -anchor w -pady 2 -cspan 2 \
2000	8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
2001	9,0 $inner.wireframe -anchor w -pady 2 -cspan 2\
2002	10,0 $inner.isolines -anchor w -pady 2 -cspan 2 \
2003	11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
2004	12,0 $inner.outline -anchor w -pady 2 -cspan 2 \
2005	13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
2006	14,0 $inner.lighting -anchor w -pady 2 -cspan 2 \
2007	15,0 $inner.opacity_l -anchor w -pady 2 \
2008	15,1 $inner.opacity -fill x -pady 2 \
2009	16,0 $inner.scale_l -anchor w -pady 2 -cspan 2 \
2010	16,1 $inner.scale -fill x -pady 2 -cspan 2 \
2011
2012	blt::table configure $inner r* c* -resize none
2013	blt::table configure $inner r17 c1 -resize expand
2014	}
2015
2016	itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
2017
2018	set fg [option get $itk_component(hull) font Font]
2019	#set bfg [option get $itk_component(hull) boldFont Font]
2020
2021	set inner [$itk_component(main) insert end \
2022	-title "Axis Settings" \
2023	-icon [Rappture::icon axis2]]
2024	$inner configure -borderwidth 4
2025
2026	checkbutton $inner.visible \
2027	-text "Axes" \
2028	-variable [itcl::scope _settings(-axisvisible)] \
2029	-command [itcl::code $this AdjustSetting -axisvisible] \
2030	-font "Arial 9"
2031	checkbutton $inner.labels \
2032	-text "Axis Labels" \
2033	-variable [itcl::scope _settings(-axislabels)] \
2034	-command [itcl::code $this AdjustSetting -axislabels] \
2035	-font "Arial 9"
2036	label $inner.grid_l -text "Grid" -font "Arial 9"
2037	checkbutton $inner.xgrid \
2038	-text "X" \
2039	-variable [itcl::scope _settings(-xgrid)] \
2040	-command [itcl::code $this AdjustSetting -xgrid] \
2041	-font "Arial 9"
2042	checkbutton $inner.ygrid \
2043	-text "Y" \
2044	-variable [itcl::scope _settings(-ygrid)] \
2045	-command [itcl::code $this AdjustSetting -ygrid] \
2046	-font "Arial 9"
2047	checkbutton $inner.zgrid \
2048	-text "Z" \
2049	-variable [itcl::scope _settings(-zgrid)] \
2050	-command [itcl::code $this AdjustSetting -zgrid] \
2051	-font "Arial 9"
2052	checkbutton $inner.minorticks \
2053	-text "Minor Ticks" \
2054	-variable [itcl::scope _settings(-axisminorticks)] \
2055	-command [itcl::code $this AdjustSetting -axisminorticks] \
2056	-font "Arial 9"
2057
2058
2059	label $inner.mode_l -text "Mode" -font "Arial 9"
2060
2061	itk_component add axisflymode {
2062	Rappture::Combobox $inner.mode -width 10 -editable no
2063	}
2064	$inner.mode choices insert end \
2065	"static_triad" "static" \
2066	"closest_triad" "closest" \
2067	"furthest_triad" "farthest" \
2068	"outer_edges" "outer"
2069	$itk_component(axisflymode) value $_settings(-axisflymode)
2070	bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
2071
2072	blt::table $inner \
2073	0,0 $inner.visible -anchor w -cspan 4 \
2074	1,0 $inner.labels -anchor w -cspan 4 \
2075	2,0 $inner.minorticks -anchor w -cspan 4 \
2076	4,0 $inner.grid_l -anchor w \
2077	4,1 $inner.xgrid -anchor w \
2078	4,2 $inner.ygrid -anchor w \
2079	4,3 $inner.zgrid -anchor w \
2080	5,0 $inner.mode_l -anchor w -padx { 2 0 } \
2081	5,1 $inner.mode -fill x -cspan 3
2082
2083	blt::table configure $inner r* c* -resize none
2084	blt::table configure $inner r7 c6 -resize expand
2085	blt::table configure $inner r3 -height 0.125i
2086	}
2087
2088
2089	itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2090	set inner [$itk_component(main) insert end \
2091	-title "Camera Settings" \
2092	-icon [Rappture::icon camera]]
2093	$inner configure -borderwidth 4
2094
2095	label $inner.view_l -text "view" -font "Arial 9"
2096	set f [frame $inner.view]
2097	foreach side { front back left right top bottom } {
2098	button $f.$side -image [Rappture::icon view$side] \
2099	-command [itcl::code $this SetOrientation $side]
2100	Rappture::Tooltip::for $f.$side "Change the view to $side"
2101	pack $f.$side -side left
2102	}
2103
2104	blt::table $inner \
2105	0,0 $inner.view_l -anchor e -pady 2 \
2106	0,1 $inner.view -anchor w -pady 2
2107
2108	set labels { qx qy qz qw xpan ypan zoom }
2109	set row 1
2110	foreach tag $labels {
2111	label $inner.${tag}label -text $tag -font "Arial 9"
2112	entry $inner.${tag} -font "Arial 9" -bg white \
2113	-textvariable [itcl::scope _view($tag)]
2114	bind $inner.${tag} <Return> \
2115	[itcl::code $this camera set ${tag}]
2116	bind $inner.${tag} <KP_Enter> \
2117	[itcl::code $this camera set ${tag}]
2118	blt::table $inner \
2119	$row,0 $inner.${tag}label -anchor e -pady 2 \
2120	$row,1 $inner.${tag} -anchor w -pady 2
2121	blt::table configure $inner r$row -resize none
2122	incr row
2123	}
2124	checkbutton $inner.ortho \
2125	-text "Orthographic Projection" \
2126	-variable [itcl::scope _view(ortho)] \
2127	-command [itcl::code $this camera set ortho] \
2128	-font "Arial 9"
2129	blt::table $inner \
2130	$row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2131	blt::table configure $inner r$row -resize none
2132	incr row
2133
2134	blt::table configure $inner c* r* -resize none
2135	blt::table configure $inner c2 -resize expand
2136	blt::table configure $inner r$row -resize expand
2137	}
2138
2139	#
2140	# camera --
2141	#
2142	itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2143	switch -- $option {
2144	"show" {
2145	puts [array get _view]
2146	}
2147	"set" {
2148	set who [lindex $args 0]
2149	set x $_view($who)
2150	set code [catch { string is double $x } result]
2151	if { $code != 0 \|\| !$result } {
2152	return
2153	}
2154	switch -- $who {
2155	"ortho" {
2156	if {$_view(ortho)} {
2157	SendCmd "camera mode ortho"
2158	} else {
2159	SendCmd "camera mode persp"
2160	}
2161	}
2162	"xpan" - "ypan" {
2163	PanCamera
2164	}
2165	"qx" - "qy" - "qz" - "qw" {
2166	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2167	$_arcball quaternion $q
2168	EventuallyRotate $q
2169	}
2170	"zoom" {
2171	SendCmd "camera zoom $_view(zoom)"
2172	}
2173	}
2174	}
2175	}
2176	}
2177
2178	itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2179	set bytes ""
2180	foreach dataobj [get] {
2181	foreach comp [$dataobj components] {
2182	set tag $dataobj-$comp
2183	set contents [$dataobj vtkdata $comp]
2184	append bytes "$contents\n"
2185	}
2186	}
2187	return [list .vtk $bytes]
2188	}
2189
2190	itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2191	if { [image width $_image(download)] > 0 &&
2192	[image height $_image(download)] > 0 } {
2193	set bytes [$_image(download) data -format "jpeg -quality 100"]
2194	set bytes [Rappture::encoding::decode -as b64 $bytes]
2195	return [list .jpg $bytes]
2196	}
2197	return ""
2198	}
2199
2200	itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2201	Rappture::Balloon $popup \
2202	-title "[Rappture::filexfer::label downloadWord] as..."
2203	set inner [$popup component inner]
2204	label $inner.summary -text "" -anchor w
2205	radiobutton $inner.vtk_button -text "VTK data file" \
2206	-variable [itcl::scope _downloadPopup(format)] \
2207	-font "Arial 9 " \
2208	-value vtk
2209	Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2210	radiobutton $inner.image_button -text "Image File" \
2211	-variable [itcl::scope _downloadPopup(format)] \
2212	-font "Arial 9 " \
2213	-value image
2214	Rappture::Tooltip::for $inner.image_button \
2215	"Save as digital image."
2216
2217	button $inner.ok -text "Save" \
2218	-highlightthickness 0 -pady 2 -padx 3 \
2219	-command $command \
2220	-compound left \
2221	-image [Rappture::icon download]
2222
2223	button $inner.cancel -text "Cancel" \
2224	-highlightthickness 0 -pady 2 -padx 3 \
2225	-command [list $popup deactivate] \
2226	-compound left \
2227	-image [Rappture::icon cancel]
2228
2229	blt::table $inner \
2230	0,0 $inner.summary -cspan 2 \
2231	1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2232	2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2233	4,1 $inner.cancel -width .9i -fill y \
2234	4,0 $inner.ok -padx 2 -width .9i -fill y
2235	blt::table configure $inner r3 -height 4
2236	blt::table configure $inner r4 -pady 4
2237	raise $inner.image_button
2238	$inner.vtk_button invoke
2239	return $inner
2240	}
2241
2242	#
2243	# SetObjectStyle --
2244	#
2245	# Set the style of the heightmap/contour object. This gets calls
2246	# for each dataset once as it is loaded. It can overridden by
2247	# the user controls.
2248	#
2249	#
2250	itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2251	# Parse style string.
2252	set tag $dataobj-$comp
2253	array set style {
2254	-color BCGYR
2255	-levels 10
2256	-opacity 1.0
2257	}
2258	set stylelist [$dataobj style $comp]
2259	if { $stylelist != "" } {
2260	array set style $stylelist
2261	}
2262	# This is too complicated. We want to set the colormap, number of
2263	# isolines and opacity for the dataset. They can be the default values,
2264	# the style hints loaded with the dataset, or set by user controls. As
2265	# datasets get loaded, they first use the defaults that are overidden
2266	# by the style hints. If the user changes the global controls, then that
2267	# overrides everything else. I don't know what it means when global
2268	# controls are specified as style hints by each dataset. It complicates
2269	# the code to handle aberrant cases.
2270
2271	if { $_changed(-opacity) } {
2272	set style(-opacity) [expr $_settings(-opacity) * 0.01]
2273	}
2274	if { $_changed(-numisolines) } {
2275	set style(-levels) $_settings(-numisolines)
2276	}
2277	if { $_changed(-colormap) } {
2278	set style(-color) $_settings(-colormap)
2279	}
2280	if { $_currentColormap == "" } {
2281	$itk_component(colormap) value $style(-color)
2282	}
2283	if { [info exists style(-stretchtofit)] } {
2284	set _settings(-stretchtofit) $style(-stretchtofit)
2285	AdjustSetting -stretchtofit
2286	}
2287	if { $_currentNumIsolines != $style(-levels) } {
2288	set _currentNumIsolines $style(-levels)
2289	set _settings(-numisolines) $_currentNumIsolines
2290	$itk_component(numisolines) value $_currentNumIsolines
2291	UpdateContourList
2292	DrawLegend
2293	}
2294	SendCmd "outline add $tag"
2295	SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2296	SendCmd "outline visible $_settings(-outline) $tag"
2297	set scale [GetHeightmapScale]
2298	SendCmd "[list heightmap add contourlist $_contourList $scale $tag]"
2299	set _comp2scale($tag) $_settings(-heightmapscale)
2300	SendCmd "heightmap edges $_settings(-edges) $tag"
2301	SendCmd "heightmap wireframe $_settings(-wireframe) $tag"
2302	SetCurrentColormap $style(-color)
2303	set color [$itk_component(isolinecolor) value]
2304	SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2305	SendCmd "heightmap lighting $_settings(-isheightmap) $tag"
2306	SendCmd "heightmap isolines $_settings(-isolinesvisible) $tag"
2307	SendCmd "heightmap surface $_settings(-colormapvisible) $tag"
2308	SendCmd "heightmap opacity $style(-opacity) $tag"
2309	set _settings(-opacity) [expr $style(-opacity) * 100.0]
2310	}
2311
2312	itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2313	if {[catch {$dataobj isa Rappture::Field} valid] != 0 \|\| !$valid} {
2314	return 0
2315	}
2316	return 1
2317	}
2318
2319	# ----------------------------------------------------------------------
2320	# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2321	#
2322	# Invoked automatically whenever the "legend" command comes in from
2323	# the rendering server. Indicates that binary image data with the
2324	# specified <size> will follow.
2325	# ----------------------------------------------------------------------
2326	itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2327	#puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2328	if { [isconnected] } {
2329	set bytes [ReceiveBytes $size]
2330	if { ![info exists _image(legend)] } {
2331	set _image(legend) [image create photo]
2332	}
2333	$_image(legend) configure -data $bytes
2334	#puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2335	if { [catch {DrawLegend} errs] != 0 } {
2336	global errorInfo
2337	puts stderr "errs=$errs errorInfo=$errorInfo"
2338	}
2339	}
2340	}
2341
2342	#
2343	# DrawLegend --
2344	#
2345	# Draws the legend in the own canvas on the right side of the plot area.
2346	#
2347	itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2348	set fname $_curFldName
2349	set c $itk_component(view)
2350	set w [winfo width $c]
2351	set h [winfo height $c]
2352	set font "Arial 8"
2353	set lineht [font metrics $font -linespace]
2354
2355	if { [string match "component*" $fname] } {
2356	set title ""
2357	} else {
2358	if { [info exists _fields($fname)] } {
2359	foreach { title units } $_fields($fname) break
2360	if { $units != "" } {
2361	set title [format "%s (%s)" $title $units]
2362	}
2363	} else {
2364	set title $fname
2365	}
2366	}
2367	set x [expr $w - 2]
2368	if { !$_settings(-legendvisible) } {
2369	$c delete legend
2370	return
2371	}
2372	if { [$c find withtag "legend"] == "" } {
2373	set y 2
2374	# If there's a legend title, create a text item for the title.
2375	$c create text $x $y \
2376	-anchor ne \
2377	-fill $itk_option(-plotforeground) -tags "title legend" \
2378	-font $font
2379	if { $title != "" } {
2380	incr y $lineht
2381	}
2382	$c create text $x $y \
2383	-anchor ne \
2384	-fill $itk_option(-plotforeground) -tags "vmax legend" \
2385	-font $font
2386	incr y $lineht
2387	$c create image $x $y \
2388	-anchor ne \
2389	-image $_image(legend) -tags "colormap legend"
2390	$c create rectangle $x $y 1 1 \
2391	-fill "" -outline "" -tags "sensor legend"
2392	$c create text $x [expr {$h-2}] \
2393	-anchor se \
2394	-fill $itk_option(-plotforeground) -tags "vmin legend" \
2395	-font $font
2396	$c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2397	$c bind sensor <Leave> [itcl::code $this LeaveLegend]
2398	$c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2399	}
2400	$c delete isoline
2401	set x2 $x
2402	set iw [image width $_image(legend)]
2403	set ih [image height $_image(legend)]
2404	set x1 [expr $x2 - ($iw*12)/10]
2405	set color [$itk_component(isolinecolor) value]
2406
2407	# Draw the isolines on the legend.
2408	array unset _isolines
2409	if { $color != "none" && [info exists _limits($_curFldName)] &&
2410	$_settings(-isolinesvisible) && $_currentNumIsolines > 0 } {
2411
2412	foreach { vmin vmax } $_limits($_curFldName) break
2413	set range [expr double($vmax - $vmin)]
2414	if { $range <= 0.0 } {
2415	set range 1.0; # Min is greater or equal to max.
2416	}
2417	set tags "isoline legend"
2418	set offset [expr 2 + $lineht]
2419	if { $title != "" } {
2420	incr offset $lineht
2421	}
2422	foreach value $_contourList {
2423	set norm [expr 1.0 - (($value - $vmin) / $range)]
2424	set y1 [expr int(round(($norm * $ih) + $offset))]
2425	for { set off 0 } { $off < 3 } { incr off } {
2426	set _isolines([expr $y1 + $off]) $value
2427	set _isolines([expr $y1 - $off]) $value
2428	}
2429	$c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2430	}
2431	}
2432
2433	$c bind title <ButtonPress> [itcl::code $this Combo post]
2434	$c bind title <Enter> [itcl::code $this Combo activate]
2435	$c bind title <Leave> [itcl::code $this Combo deactivate]
2436	# Reset the item coordinates according the current size of the plot.
2437	if { [info exists _limits($_curFldName)] } {
2438	foreach { vmin vmax } $_limits($_curFldName) break
2439	$c itemconfigure vmin -text [format %g $vmin]
2440	$c itemconfigure vmax -text [format %g $vmax]
2441	}
2442	set y 2
2443	# If there's a legend title, move the title to the correct position
2444	if { $title != "" } {
2445	$c itemconfigure title -text $title
2446	$c coords title $x $y
2447	incr y $lineht
2448	}
2449	$c coords vmax $x $y
2450	incr y $lineht
2451	$c coords colormap $x $y
2452	$c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2453	$c raise sensor
2454	$c coords vmin $x [expr {$h - 2}]
2455	}
2456
2457	#
2458	# EnterLegend --
2459	#
2460	itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2461	SetLegendTip $x $y
2462	}
2463
2464	#
2465	# MotionLegend --
2466	#
2467	itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2468	Rappture::Tooltip::tooltip cancel
2469	set c $itk_component(view)
2470	set cw [winfo width $c]
2471	set ch [winfo height $c]
2472	if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2473	SetLegendTip $x $y
2474	}
2475	}
2476
2477	#
2478	# LeaveLegend --
2479	#
2480	itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2481	Rappture::Tooltip::tooltip cancel
2482	.rappturetooltip configure -icon ""
2483	}
2484
2485	#
2486	# SetLegendTip --
2487	#
2488	itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2489	set fname $_curFldName
2490	set c $itk_component(view)
2491	set w [winfo width $c]
2492	set h [winfo height $c]
2493	set font "Arial 8"
2494	set lineht [font metrics $font -linespace]
2495
2496	set ih [image height $_image(legend)]
2497	# Subtract off the offset of the color ramp from the top of the canvas
2498	set iy [expr $y - ($lineht + 2)]
2499
2500	if { [string match "component*" $fname] } {
2501	set title ""
2502	} else {
2503	if { [info exists _fields($fname)] } {
2504	foreach { title units } $_fields($fname) break
2505	if { $units != "" } {
2506	set title [format "%s (%s)" $title $units]
2507	}
2508	} else {
2509	set title $fname
2510	}
2511	}
2512	# If there's a legend title, increase the offset by the line height.
2513	if { $title != "" } {
2514	incr iy -$lineht
2515	}
2516
2517	# Make a swatch of the selected color
2518	if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2519	return
2520	}
2521
2522	if { ![info exists _image(swatch)] } {
2523	set _image(swatch) [image create photo -width 24 -height 24]
2524	}
2525	set color [eval format "\#%02x%02x%02x" $pixel]
2526	$_image(swatch) put black -to 0 0 23 23
2527	$_image(swatch) put $color -to 1 1 22 22
2528
2529	# Compute the value of the point
2530	if { [info exists _limits($fname)] } {
2531	foreach { vmin vmax } $_limits($fname) break
2532	set t [expr 1.0 - (double($iy) / double($ih-1))]
2533	set value [expr $t * ($vmax - $vmin) + $vmin]
2534	} else {
2535	set value 0.0
2536	}
2537	set tipx [expr $x + 15]
2538	set tipy [expr $y - 5]
2539	.rappturetooltip configure -icon $_image(swatch)
2540	if { [info exists _isolines($y)] } {
2541	Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2542	} else {
2543	Rappture::Tooltip::text $c [format "$title %g" $value]
2544	}
2545	Rappture::Tooltip::tooltip show $c +$tipx,+$tipy
2546	}
2547
2548	# ----------------------------------------------------------------------
2549	# USAGE: _dropdown post
2550	# USAGE: _dropdown unpost
2551	# USAGE: _dropdown select
2552	#
2553	# Used internally to handle the dropdown list for this combobox. The
2554	# post/unpost options are invoked when the list is posted or unposted
2555	# to manage the relief of the controlling button. The select option
2556	# is invoked whenever there is a selection from the list, to assign
2557	# the value back to the gauge.
2558	# ----------------------------------------------------------------------
2559	itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2560	set c $itk_component(view)
2561	switch -- $option {
2562	post {
2563	foreach { x1 y1 x2 y2 } [$c bbox title] break
2564	set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2565	set x [expr $x1 + [winfo rootx $itk_component(view)]]
2566	set y [expr $y2 + [winfo rooty $itk_component(view)]]
2567	tk_popup $itk_component(fieldmenu) $x $y
2568	}
2569	activate {
2570	$c itemconfigure title -fill red
2571	}
2572	deactivate {
2573	$c itemconfigure title -fill $itk_option(-plotforeground)
2574	}
2575	invoke {
2576	$itk_component(field) value $_curFldLabel
2577	AdjustSetting -field
2578	}
2579	default {
2580	error "bad option \"$option\": should be post, unpost, select"
2581	}
2582	}
2583	}
2584
2585	itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2586	if { $_settings(-isheightmap) } {
2587	set val $_settings(-heightmapscale)
2588	set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2589	return $sval
2590	}
2591	return 0
2592	}
2593
2594	itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2595	array set positions {
2596	front "0.707107 0.707107 0 0"
2597	back "0 0 0.707107 0.707107"
2598	left "0.5 0.5 -0.5 -0.5"
2599	right "0.5 0.5 0.5 0.5"
2600	top "1 0 0 0"
2601	bottom "0 1 0 0"
2602	}
2603	foreach name { qw qx qy qz } value $positions($side) {
2604	set _view($name) $value
2605	}
2606	set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2607	$_arcball quaternion $q
2608	SendCmd "camera orient $q"
2609	SendCmd "camera reset"
2610	set _view(xpan) 0
2611	set _view(ypan) 0
2612	set _view(zoom) 1.0
2613	}
2614
2615	itcl::body Rappture::VtkHeightmapViewer::UpdateContourList {} {
2616	if {$_currentNumIsolines == 0} {
2617	set _contourList ""
2618	return
2619	}
2620	if { ![info exists _limits($_curFldName)] } {
2621	return
2622	}
2623	foreach { vmin vmax } $_limits($_curFldName) break
2624	set v [blt::vector create \#auto]
2625	$v seq $vmin $vmax [expr $_currentNumIsolines+2]
2626	$v delete end 0
2627	set _contourList [$v range 0 end]
2628	blt::vector destroy $v
2629	}

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