source: trunk/gui/scripts/vtksurfaceviewer.tcl @ 4537

Last change on this file since 4537 was 4537, checked in by ldelgass, 7 years ago

rename -surfaceoutline to -outline setting, since outline is of dataset, not
surface.

File size: 76.5 KB
Line 
1# -*- mode: tcl; indent-tabs-mode: nil -*-
2# ----------------------------------------------------------------------
3#  COMPONENT: vtksurfaceviewer - Vtk 3D boundary surface 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# ======================================================================
14package require Itk
15package require BLT
16#package require Img
17
18option add *VtkSurfaceViewer.width 4i widgetDefault
19option add *VtkSurfaceViewer*cursor crosshair widgetDefault
20option add *VtkSurfaceViewer.height 4i widgetDefault
21option add *VtkSurfaceViewer.foreground black widgetDefault
22option add *VtkSurfaceViewer.controlBackground gray widgetDefault
23option add *VtkSurfaceViewer.controlDarkBackground #999999 widgetDefault
24option add *VtkSurfaceViewer.plotBackground black widgetDefault
25option add *VtkSurfaceViewer.plotForeground white widgetDefault
26option add *VtkSurfaceViewer.font \
27    -*-helvetica-medium-r-normal-*-12-* widgetDefault
28
29# must use this name -- plugs into Rappture::resources::load
30proc VtkSurfaceViewer_init_resources {} {
31    Rappture::resources::register \
32        vtkvis_server Rappture::VtkSurfaceViewer::SetServerList
33}
34
35itcl::class Rappture::VtkSurfaceViewer {
36    inherit Rappture::VisViewer
37
38    itk_option define -plotforeground plotForeground Foreground ""
39    itk_option define -plotbackground plotBackground Background ""
40
41    constructor { hostlist args } {
42        Rappture::VisViewer::constructor $hostlist
43    } {
44        # defined below
45    }
46    destructor {
47        # defined below
48    }
49    public proc SetServerList { namelist } {
50        Rappture::VisViewer::SetServerList "vtkvis" $namelist
51    }
52    public method add {dataobj {settings ""}}
53    public method camera {option args}
54    public method delete {args}
55    public method disconnect {}
56    public method download {option args}
57    public method get {args}
58    public method isconnected {}
59    public method limits { colormap }
60    public method parameters {title args} {
61        # do nothing
62    }
63    public method scale {args}
64
65    protected method Connect {}
66    protected method CurrentDatasets {args}
67    protected method Disconnect {}
68    protected method DoResize {}
69    protected method DoRotate {}
70    protected method AdjustSetting {what {value ""}}
71    protected method InitSettings { args  }
72    protected method Pan {option x y}
73    protected method Pick {x y}
74    protected method Rebuild {}
75    protected method ReceiveDataset { args }
76    protected method ReceiveImage { args }
77    protected method ReceiveLegend { colormap title vmin vmax size }
78    protected method Rotate {option x y}
79    protected method Zoom {option}
80
81    # The following methods are only used by this class.
82    private method BuildAxisTab {}
83    private method BuildCameraTab {}
84    private method BuildColormap { name }
85    private method BuildDownloadPopup { widget command }
86    private method BuildSurfaceTab {}
87    private method Combo { option }
88    private method DrawLegend {}
89    private method EnterLegend { x y }
90    private method EventuallyResize { w h }
91    private method EventuallyRotate { q }
92    private method EventuallyRequestLegend {}
93    private method GetImage { args }
94    private method GetVtkData { args }
95    private method IsValidObject { dataobj }
96    private method LeaveLegend {}
97    private method MotionLegend { x y }
98    private method PanCamera {}
99    private method RequestLegend {}
100    private method SetLegendTip { x y }
101    private method SetObjectStyle { dataobj comp }
102    private method SetCurrentColormap { color }
103    private method SetOrientation { side }
104    private method UpdateContourList {}
105
106    private variable _arcball ""
107
108    private variable _dlist ""     ;    # list of data objects
109    private variable _obj2datasets
110    private variable _obj2ovride   ;    # maps dataobj => style override
111    private variable _datasets     ;    # contains all the dataobj-component
112                                   ;    # datasets in the server
113    private variable _colormaps    ;    # contains all the colormaps
114                                   ;    # in the server.
115    # The name of the current colormap used.  The colormap is global to all
116    # heightmaps displayed.
117    private variable _currentColormap ""
118    private variable _currentNumContours -1
119
120    private variable _dataset2style    ;# maps dataobj-component to transfunc
121
122    private variable _click        ;    # info used for rotate operations
123    private variable _limits       ;    # autoscale min/max for all axes
124    private variable _view         ;    # view params for 3D view
125    private variable _settings
126    private variable _style;            # Array of current component styles.
127    private variable _changed
128    private variable _initialStyle;     # Array of initial component styles.
129    private variable _reset 1;          # indicates if camera needs to be reset
130                                        # to starting position.
131
132    private variable _first ""     ;    # This is the topmost dataset.
133    private variable _start 0
134    private variable _title ""
135    private variable _isolines
136    private variable _contourList ""
137
138    common _downloadPopup;              # download options from popup
139    private common _hardcopy
140    private variable _width 0
141    private variable _height 0
142    private variable _resizePending 0
143    private variable _rotatePending 0
144    private variable _legendPending 0
145    private variable _field      ""
146    private variable _colorMode "scalar";       #  Mode of colormap (vmag or scalar)
147    private variable _fieldNames {}
148    private variable _fields
149    private variable _curFldName ""
150    private variable _curFldLabel ""
151}
152
153itk::usual VtkSurfaceViewer {
154    keep -background -foreground -cursor -font
155    keep -plotbackground -plotforeground
156}
157
158# ----------------------------------------------------------------------
159# CONSTRUCTOR
160# ----------------------------------------------------------------------
161itcl::body Rappture::VtkSurfaceViewer::constructor {hostlist args} {
162    package require vtk
163    set _serverType "vtkvis"
164
165    # Rebuild event
166    $_dispatcher register !rebuild
167    $_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
168
169    # Resize event
170    $_dispatcher register !resize
171    $_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
172
173    # Rotate event
174    $_dispatcher register !rotate
175    $_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
176
177    # Legend event
178    $_dispatcher register !legend
179    $_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
180
181    #
182    # Populate parser with commands handle incoming requests
183    #
184    $_parser alias image [itcl::code $this ReceiveImage]
185    $_parser alias dataset [itcl::code $this ReceiveDataset]
186    $_parser alias legend [itcl::code $this ReceiveLegend]
187
188    # Initialize the view to some default parameters.
189    array set _view {
190        qw              0.853553
191        qx              -0.353553
192        qy              0.353553
193        qz              0.146447
194        zoom            1.0
195        xpan            0
196        ypan            0
197        ortho           0
198    }
199    set _arcball [blt::arcball create 100 100]
200    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
201    $_arcball quaternion $q
202
203    array set _settings {
204        -axesvisible                    1
205        -axislabelsvisible              1
206        -background                     black
207        -colormap                       BCGYR
208        -colormapvisible                1
209        -field                          "Default"
210        -isolinecolor                   white
211        -isolinesvisible                0
212        -legendvisible                  1
213        -numcontours                    10
214        -surfaceedges                   0
215        -surfacelighting                1
216        -surfaceopacity                 100
217        -outline                        0
218        -surfacevisible                 1
219        -surfacewireframe               0
220        -xaxisgrid                      0
221        -yaxisgrid                      0
222        -zaxisgrid                      0
223    }
224    array set _changed {
225        -colormap                0
226        -numcontours             0
227        -surfaceopacity          0
228    }
229
230    itk_component add view {
231        canvas $itk_component(plotarea).view \
232            -highlightthickness 0 -borderwidth 0
233    } {
234        usual
235        ignore -highlightthickness -borderwidth  -background
236    }
237
238    itk_component add fieldmenu {
239        menu $itk_component(plotarea).menu -bg black -fg white -relief flat \
240            -tearoff 0
241    } {
242        usual
243        ignore -background -foreground -relief -tearoff
244    }
245    set c $itk_component(view)
246    bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
247    bind $c <4> [itcl::code $this Zoom in 0.25]
248    bind $c <5> [itcl::code $this Zoom out 0.25]
249    bind $c <KeyPress-Left>  [list %W xview scroll 10 units]
250    bind $c <KeyPress-Right> [list %W xview scroll -10 units]
251    bind $c <KeyPress-Up>    [list %W yview scroll 10 units]
252    bind $c <KeyPress-Down>  [list %W yview scroll -10 units]
253    bind $c <Enter> "focus %W"
254    bind $c <Control-F1> [itcl::code $this ToggleConsole]
255
256    # Fix the scrollregion in case we go off screen
257    $c configure -scrollregion [$c bbox all]
258
259    set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
260    set _map(cwidth) -1
261    set _map(cheight) -1
262    set _map(zoom) 1.0
263    set _map(original) ""
264
265    set f [$itk_component(main) component controls]
266    itk_component add reset {
267        button $f.reset -borderwidth 1 -padx 1 -pady 1 \
268            -highlightthickness 0 \
269            -image [Rappture::icon reset-view] \
270            -command [itcl::code $this Zoom reset]
271    } {
272        usual
273        ignore -highlightthickness
274    }
275    pack $itk_component(reset) -side top -padx 2 -pady 2
276    Rappture::Tooltip::for $itk_component(reset) \
277        "Reset the view to the default zoom level"
278
279    itk_component add zoomin {
280        button $f.zin -borderwidth 1 -padx 1 -pady 1 \
281            -highlightthickness 0 \
282            -image [Rappture::icon zoom-in] \
283            -command [itcl::code $this Zoom in]
284    } {
285        usual
286        ignore -highlightthickness
287    }
288    pack $itk_component(zoomin) -side top -padx 2 -pady 2
289    Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
290
291    itk_component add zoomout {
292        button $f.zout -borderwidth 1 -padx 1 -pady 1 \
293            -highlightthickness 0 \
294            -image [Rappture::icon zoom-out] \
295            -command [itcl::code $this Zoom out]
296    } {
297        usual
298        ignore -highlightthickness
299    }
300    pack $itk_component(zoomout) -side top -padx 2 -pady 2
301    Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
302
303    itk_component add surface {
304        Rappture::PushButton $f.surface \
305            -onimage [Rappture::icon volume-on] \
306            -offimage [Rappture::icon volume-off] \
307            -variable [itcl::scope _settings(-surfacevisible)] \
308            -command [itcl::code $this AdjustSetting -surfacevisible]
309    }
310    $itk_component(surface) select
311    Rappture::Tooltip::for $itk_component(surface) \
312        "Don't display the surface"
313    pack $itk_component(surface) -padx 2 -pady 2
314
315    if { [catch {
316        BuildSurfaceTab
317        BuildAxisTab
318        BuildCameraTab
319    } errs] != 0 } {
320        puts stderr errs=$errs
321    }
322    # Legend
323
324    set _image(legend) [image create photo]
325    itk_component add legend {
326        canvas $itk_component(plotarea).legend -width 50 -highlightthickness 0
327    } {
328        usual
329        ignore -highlightthickness
330        rename -background -plotbackground plotBackground Background
331    }
332
333    # Hack around the Tk panewindow.  The problem is that the requested
334    # size of the 3d view isn't set until an image is retrieved from
335    # the server.  So the panewindow uses the tiny size.
336    set w 10000
337    pack forget $itk_component(view)
338    blt::table $itk_component(plotarea) \
339        0,0 $itk_component(view) -fill both -reqwidth $w
340    blt::table configure $itk_component(plotarea) c1 -resize none
341
342    # Bindings for rotation via mouse
343    bind $itk_component(view) <ButtonPress-1> \
344        [itcl::code $this Rotate click %x %y]
345    bind $itk_component(view) <B1-Motion> \
346        [itcl::code $this Rotate drag %x %y]
347    bind $itk_component(view) <ButtonRelease-1> \
348        [itcl::code $this Rotate release %x %y]
349
350    # Bindings for panning via mouse
351    bind $itk_component(view) <ButtonPress-2> \
352        [itcl::code $this Pan click %x %y]
353    bind $itk_component(view) <B2-Motion> \
354        [itcl::code $this Pan drag %x %y]
355    bind $itk_component(view) <ButtonRelease-2> \
356        [itcl::code $this Pan release %x %y]
357
358    #bind $itk_component(view) <ButtonRelease-3> \
359    #    [itcl::code $this Pick %x %y]
360
361    # Bindings for panning via keyboard
362    bind $itk_component(view) <KeyPress-Left> \
363        [itcl::code $this Pan set -10 0]
364    bind $itk_component(view) <KeyPress-Right> \
365        [itcl::code $this Pan set 10 0]
366    bind $itk_component(view) <KeyPress-Up> \
367        [itcl::code $this Pan set 0 -10]
368    bind $itk_component(view) <KeyPress-Down> \
369        [itcl::code $this Pan set 0 10]
370    bind $itk_component(view) <Shift-KeyPress-Left> \
371        [itcl::code $this Pan set -2 0]
372    bind $itk_component(view) <Shift-KeyPress-Right> \
373        [itcl::code $this Pan set 2 0]
374    bind $itk_component(view) <Shift-KeyPress-Up> \
375        [itcl::code $this Pan set 0 -2]
376    bind $itk_component(view) <Shift-KeyPress-Down> \
377        [itcl::code $this Pan set 0 2]
378
379    # Bindings for zoom via keyboard
380    bind $itk_component(view) <KeyPress-Prior> \
381        [itcl::code $this Zoom out]
382    bind $itk_component(view) <KeyPress-Next> \
383        [itcl::code $this Zoom in]
384
385    bind $itk_component(view) <Enter> "focus $itk_component(view)"
386
387    if {[string equal "x11" [tk windowingsystem]]} {
388        # Bindings for zoom via mouse
389        bind $itk_component(view) <4> [itcl::code $this Zoom out]
390        bind $itk_component(view) <5> [itcl::code $this Zoom in]
391    }
392
393    set _image(download) [image create photo]
394
395    eval itk_initialize $args
396
397    EnableWaitDialog 500
398    Connect
399}
400
401# ----------------------------------------------------------------------
402# DESTRUCTOR
403# ----------------------------------------------------------------------
404itcl::body Rappture::VtkSurfaceViewer::destructor {} {
405    Disconnect
406    image delete $_image(plot)
407    image delete $_image(download)
408    catch { blt::arcball destroy $_arcball }
409}
410
411itcl::body Rappture::VtkSurfaceViewer::DoResize {} {
412    if { $_width < 2 } {
413        set _width 500
414    }
415    if { $_height < 2 } {
416        set _height 500
417    }
418    set _start [clock clicks -milliseconds]
419    SendCmd "screen size $_width $_height"
420
421    EventuallyRequestLegend
422    set _resizePending 0
423}
424
425itcl::body Rappture::VtkSurfaceViewer::DoRotate {} {
426    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
427    SendCmd "camera orient $q"
428    set _rotatePending 0
429}
430
431itcl::body Rappture::VtkSurfaceViewer::EventuallyRequestLegend {} {
432    if { !$_legendPending } {
433        set _legendPending 1
434        $_dispatcher event -idle !legend
435    }
436}
437
438itcl::body Rappture::VtkSurfaceViewer::EventuallyResize { w h } {
439    set _width $w
440    set _height $h
441    $_arcball resize $w $h
442    if { !$_resizePending } {
443        set _resizePending 1
444        $_dispatcher event -after 400 !resize
445    }
446}
447
448set rotate_delay 100
449
450itcl::body Rappture::VtkSurfaceViewer::EventuallyRotate { q } {
451    foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
452    if { !$_rotatePending } {
453        set _rotatePending 1
454        global rotate_delay
455        $_dispatcher event -after $rotate_delay !rotate
456    }
457}
458
459# ----------------------------------------------------------------------
460# USAGE: add <dataobj> ?<settings>?
461#
462# Clients use this to add a data object to the plot.  The optional
463# <settings> are used to configure the plot.  Allowed settings are
464# -color, -brightness, -width, -linestyle, and -raise.
465# ----------------------------------------------------------------------
466itcl::body Rappture::VtkSurfaceViewer::add {dataobj {settings ""}} {
467    if { ![$dataobj isvalid] } {
468        return;                         # Object doesn't contain valid data.
469    }
470    array set params {
471        -color auto
472        -width 1
473        -linestyle solid
474        -brightness 0
475        -raise 0
476        -description ""
477        -param ""
478        -type ""
479    }
480    array set params $settings
481    set params(-description) ""
482    set params(-param) ""
483    array set params $settings
484
485    if {$params(-color) == "auto" || $params(-color) == "autoreset"} {
486        # can't handle -autocolors yet
487        set params(-color) black
488    }
489    set pos [lsearch -exact $_dlist $dataobj]
490    if {$pos < 0} {
491        lappend _dlist $dataobj
492    }
493    set _obj2ovride($dataobj-color) $params(-color)
494    set _obj2ovride($dataobj-width) $params(-width)
495    set _obj2ovride($dataobj-raise) $params(-raise)
496    $_dispatcher event -idle !rebuild
497}
498
499
500# ----------------------------------------------------------------------
501# USAGE: delete ?<dataobj1> <dataobj2> ...?
502#
503#       Clients use this to delete a dataobj from the plot.  If no dataobjs
504#       are specified, then all dataobjs are deleted.  No data objects are
505#       deleted.  They are only removed from the display list.
506#
507# ----------------------------------------------------------------------
508itcl::body Rappture::VtkSurfaceViewer::delete {args} {
509    if { [llength $args] == 0} {
510        set args $_dlist
511    }
512    # Delete all specified dataobjs
513    set changed 0
514    foreach dataobj $args {
515        set pos [lsearch -exact $_dlist $dataobj]
516        if { $pos < 0 } {
517            continue;                   # Don't know anything about it.
518        }
519        # Remove it from the dataobj list.
520        set _dlist [lreplace $_dlist $pos $pos]
521        array unset _obj2ovride $dataobj-*
522        array unset _settings $dataobj-*
523        set changed 1
524    }
525    # If anything changed, then rebuild the plot
526    if { $changed } {
527        $_dispatcher event -idle !rebuild
528    }
529}
530
531# ----------------------------------------------------------------------
532# USAGE: get ?-objects?
533# USAGE: get ?-visible?
534# USAGE: get ?-image view?
535#
536# Clients use this to query the list of objects being plotted, in
537# order from bottom to top of this result.  The optional "-image"
538# flag can also request the internal images being shown.
539# ----------------------------------------------------------------------
540itcl::body Rappture::VtkSurfaceViewer::get {args} {
541    if {[llength $args] == 0} {
542        set args "-objects"
543    }
544
545    set op [lindex $args 0]
546    switch -- $op {
547        "-objects" {
548            # put the dataobj list in order according to -raise options
549            set dlist {}
550            foreach dataobj $_dlist {
551                if { ![IsValidObject $dataobj] } {
552                    continue
553                }
554                if {[info exists _obj2ovride($dataobj-raise)] &&
555                    $_obj2ovride($dataobj-raise)} {
556                    set dlist [linsert $dlist 0 $dataobj]
557                } else {
558                    lappend dlist $dataobj
559                }
560            }
561            return $dlist
562        }
563        "-visible" {
564            set dlist {}
565            foreach dataobj $_dlist {
566                if { ![IsValidObject $dataobj] } {
567                    continue
568                }
569                if { ![info exists _obj2ovride($dataobj-raise)] } {
570                    # No setting indicates that the object isn't visible.
571                    continue
572                }
573                # Otherwise use the -raise parameter to put the object to
574                # the front of the list.
575                if { $_obj2ovride($dataobj-raise) } {
576                    set dlist [linsert $dlist 0 $dataobj]
577                } else {
578                    lappend dlist $dataobj
579                }
580            }
581            return $dlist
582        }           
583        -image {
584            if {[llength $args] != 2} {
585                error "wrong # args: should be \"get -image view\""
586            }
587            switch -- [lindex $args end] {
588                view {
589                    return $_image(plot)
590                }
591                default {
592                    error "bad image name \"[lindex $args end]\": should be view"
593                }
594            }
595        }
596        default {
597            error "bad option \"$op\": should be -objects or -image"
598        }
599    }
600}
601
602# ----------------------------------------------------------------------
603# USAGE: scale ?<data1> <data2> ...?
604#
605# Sets the default limits for the overall plot according to the
606# limits of the data for all of the given <data> objects.  This
607# accounts for all objects--even those not showing on the screen.
608# Because of this, the limits are appropriate for all objects as
609# the user scans through data in the ResultSet viewer.
610# ----------------------------------------------------------------------
611itcl::body Rappture::VtkSurfaceViewer::scale { args } {
612    foreach dataobj $args {
613        if { ![$dataobj isvalid] } {
614            continue;                   # Object doesn't contain valid data.
615        }
616        foreach axis { x y z } {
617            set lim [$dataobj limits $axis]
618            if { ![info exists _limits($axis)] } {
619                set _limits($axis) $lim
620                continue
621            }
622            foreach {min max} $lim break
623            foreach {amin amax} $_limits($axis) break
624            if { $amin > $min } {
625                set amin $min
626            }
627            if { $amax < $max } {
628                set amax $max
629            }
630            set _limits($axis) [list $amin $amax]
631        }
632        foreach { fname lim } [$dataobj fieldlimits] {
633            if { ![info exists _limits($fname)] } {
634                set _limits($fname) $lim
635                continue
636            }
637            foreach {min max} $lim break
638            foreach {fmin fmax} $_limits($fname) break
639            if { $fmin > $min } {
640                set fmin $min
641            }
642            if { $fmax < $max } {
643                set fmax $max
644            }
645            set _limits($fname) [list $fmin $fmax]
646        }
647    }
648}
649
650# ----------------------------------------------------------------------
651# USAGE: download coming
652# USAGE: download controls <downloadCommand>
653# USAGE: download now
654#
655# Clients use this method to create a downloadable representation
656# of the plot.  Returns a list of the form {ext string}, where
657# "ext" is the file extension (indicating the type of data) and
658# "string" is the data itself.
659# ----------------------------------------------------------------------
660itcl::body Rappture::VtkSurfaceViewer::download {option args} {
661    switch $option {
662        coming {
663            if {[catch {
664                blt::winop snap $itk_component(plotarea) $_image(download)
665            }]} {
666                $_image(download) configure -width 1 -height 1
667                $_image(download) put #000000
668            }
669        }
670        controls {
671            set popup .vtkviewerdownload
672            if { ![winfo exists .vtkviewerdownload] } {
673                set inner [BuildDownloadPopup $popup [lindex $args 0]]
674            } else {
675                set inner [$popup component inner]
676            }
677            set _downloadPopup(image_controls) $inner.image_frame
678            set num [llength [get]]
679            set num [expr {($num == 1) ? "1 result" : "$num results"}]
680            set word [Rappture::filexfer::label downloadWord]
681            $inner.summary configure -text "$word $num in the following format:"
682            update idletasks            ;# Fix initial sizes
683            return $popup
684        }
685        now {
686            set popup .vtkviewerdownload
687            if {[winfo exists .vtkviewerdownload]} {
688                $popup deactivate
689            }
690            switch -- $_downloadPopup(format) {
691                "image" {
692                    return [$this GetImage [lindex $args 0]]
693                }
694                "vtk" {
695                    return [$this GetVtkData [lindex $args 0]]
696                }
697            }
698            return ""
699        }
700        default {
701            error "bad option \"$option\": should be coming, controls, now"
702        }
703    }
704}
705
706# ----------------------------------------------------------------------
707# USAGE: Connect ?<host:port>,<host:port>...?
708#
709# Clients use this method to establish a connection to a new
710# server, or to reestablish a connection to the previous server.
711# Any existing connection is automatically closed.
712# ----------------------------------------------------------------------
713itcl::body Rappture::VtkSurfaceViewer::Connect {} {
714    set _hosts [GetServerList "vtkvis"]
715    if { "" == $_hosts } {
716        return 0
717    }
718    set result [VisViewer::Connect $_hosts]
719    if { $result } {
720        if { $_reportClientInfo }  {
721            # Tell the server the viewer, hub, user and session.
722            # Do this immediately on connect before buffering any commands
723            global env
724
725            set info {}
726            set user "???"
727            if { [info exists env(USER)] } {
728                set user $env(USER)
729            }
730            set session "???"
731            if { [info exists env(SESSION)] } {
732                set session $env(SESSION)
733            }
734            lappend info "hub" [exec hostname]
735            lappend info "client" "vtksurfaceviewer"
736            lappend info "user" $user
737            lappend info "session" $session
738            SendCmd "clientinfo [list $info]"
739        }
740
741        set w [winfo width $itk_component(view)]
742        set h [winfo height $itk_component(view)]
743        EventuallyResize $w $h
744    }
745    return $result
746}
747
748#
749# isconnected --
750#
751#       Indicates if we are currently connected to the visualization server.
752#
753itcl::body Rappture::VtkSurfaceViewer::isconnected {} {
754    return [VisViewer::IsConnected]
755}
756
757#
758# disconnect --
759#
760itcl::body Rappture::VtkSurfaceViewer::disconnect {} {
761    Disconnect
762    set _reset 1
763}
764
765#
766# Disconnect --
767#
768#       Clients use this method to disconnect from the current rendering
769#       server.
770#
771itcl::body Rappture::VtkSurfaceViewer::Disconnect {} {
772    VisViewer::Disconnect
773
774    $_dispatcher cancel !rebuild
775    $_dispatcher cancel !resize
776    $_dispatcher cancel !rotate
777    $_dispatcher cancel !legend
778    # disconnected -- no more data sitting on server
779    set _outbuf ""
780    array unset _datasets
781    array unset _data
782    array unset _colormaps
783    array unset _seeds
784    array unset _dataset2style
785    array unset _obj2datasets
786}
787
788# ----------------------------------------------------------------------
789# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
790#
791# Invoked automatically whenever the "image" command comes in from
792# the rendering server.  Indicates that binary image data with the
793# specified <size> will follow.
794# ----------------------------------------------------------------------
795itcl::body Rappture::VtkSurfaceViewer::ReceiveImage { args } {
796    array set info {
797        -token "???"
798        -bytes 0
799        -type image
800    }
801    array set info $args
802    set bytes [ReceiveBytes $info(-bytes)]
803    if { $info(-type) == "image" } {
804        if 0 {
805            set f [open "last.ppm" "w"]
806            puts $f $bytes
807            close $f
808        }
809        $_image(plot) configure -data $bytes
810        #set time [clock seconds]
811        #set date [clock format $time]
812        #set w [image width $_image(plot)]
813        #set h [image height $_image(plot)]
814        #puts stderr "$date: received image ${w}x${h} image"       
815        if { $_start > 0 } {
816            set finish [clock clicks -milliseconds]
817            #puts stderr "round trip time [expr $finish -$_start] milliseconds"
818            set _start 0
819        }
820    } elseif { $info(type) == "print" } {
821        set tag $this-print-$info(-token)
822        set _hardcopy($tag) $bytes
823    }
824}
825
826#
827# ReceiveDataset --
828#
829itcl::body Rappture::VtkSurfaceViewer::ReceiveDataset { args } {
830    if { ![isconnected] } {
831        return
832    }
833    set option [lindex $args 0]
834    switch -- $option {
835        "scalar" {
836            set option [lindex $args 1]
837            switch -- $option {
838                "world" {
839                    foreach { x y z value tag } [lrange $args 2 end] break
840                }
841                "pixel" {
842                    foreach { x y value tag } [lrange $args 2 end] break
843                }
844            }
845        }
846        "vector" {
847            set option [lindex $args 1]
848            switch -- $option {
849                "world" {
850                    foreach { x y z vx vy vz tag } [lrange $args 2 end] break
851                }
852                "pixel" {
853                    foreach { x y vx vy vz tag } [lrange $args 2 end] break
854                }
855            }
856        }
857        "names" {
858            foreach { name } [lindex $args 1] {
859                #puts stderr "Dataset: $name"
860            }
861        }
862        default {
863            error "unknown dataset option \"$option\" from server"
864        }
865    }
866}
867
868# ----------------------------------------------------------------------
869# USAGE: Rebuild
870#
871# Called automatically whenever something changes that affects the
872# data in the widget.  Clears any existing data and rebuilds the
873# widget to display new data.
874# ----------------------------------------------------------------------
875itcl::body Rappture::VtkSurfaceViewer::Rebuild {} {
876    set w [winfo width $itk_component(view)]
877    set h [winfo height $itk_component(view)]
878    if { $w < 2 || $h < 2 } {
879        $_dispatcher event -idle !rebuild
880        return
881    }
882
883    # Turn on buffering of commands to the server.  We don't want to
884    # be preempted by a server disconnect/reconnect (which automatically
885    # generates a new call to Rebuild).   
886    StartBufferingCommands
887
888    if { $_reset } {
889        set _width $w
890        set _height $h
891        $_arcball resize $w $h
892        DoResize
893        #
894        # Reset the camera and other view parameters
895        #
896        set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
897        $_arcball quaternion $q
898        if {$_view(ortho)} {
899            SendCmd "camera mode ortho"
900        } else {
901            SendCmd "camera mode persp"
902        }
903        DoRotate
904        PanCamera
905        set _first ""
906        InitSettings -xaxisgrid -yaxisgrid -zaxisgrid -axismode \
907            -axesvisible -axislabelsvisible
908        foreach axis { x y z } {
909            SendCmd "axis lformat $axis %g"
910        }
911        StopBufferingCommands
912        SendCmd "imgflush"
913        StartBufferingCommands
914    }
915    set _first ""
916    SendCmd "dataset visible 0"
917    foreach dataobj [get -objects] {
918        if { [info exists _obj2ovride($dataobj-raise)] &&  $_first == "" } {
919            set _first $dataobj
920        }
921        set _obj2datasets($dataobj) ""
922        foreach comp [$dataobj components] {
923            set tag $dataobj-$comp
924            if { ![info exists _datasets($tag)] } {
925                set bytes [$dataobj vtkdata $comp]
926                if 0 {
927                    set f [open "/tmp/surface.vtk" "w"]
928                    puts $f $bytes
929                    close $f
930                }
931                set length [string length $bytes]
932                if { $_reportClientInfo }  {
933                    set info {}
934                    lappend info "tool_id"       [$dataobj hints toolId]
935                    lappend info "tool_name"     [$dataobj hints toolName]
936                    lappend info "tool_version"  [$dataobj hints toolRevision]
937                    lappend info "tool_title"    [$dataobj hints toolTitle]
938                    lappend info "dataset_label" [$dataobj hints label]
939                    lappend info "dataset_size"  $length
940                    lappend info "dataset_tag"   $tag
941                    SendCmd "clientinfo [list $info]"
942                }
943                append _outbuf "dataset add $tag data follows $length\n"
944                append _outbuf $bytes
945                set _datasets($tag) 1
946                SetObjectStyle $dataobj $comp
947            }
948            lappend _obj2datasets($dataobj) $tag
949            if { [info exists _obj2ovride($dataobj-raise)] } {
950                # Setting dataset visible enables outline
951                # and contour2d
952                SendCmd "dataset visible 1 $tag"
953            }
954        }
955    }
956
957    if { $_first != "" } {
958        $itk_component(field) choices delete 0 end
959        $itk_component(fieldmenu) delete 0 end
960        array unset _fields
961        set _curFldName ""
962        foreach cname [$_first components] {
963            foreach fname [$_first fieldnames $cname] {
964                if { [info exists _fields($fname)] } {
965                    continue
966                }
967                foreach { label units components } \
968                    [$_first fieldinfo $fname] break
969                $itk_component(field) choices insert end "$fname" "$label"
970                $itk_component(fieldmenu) add radiobutton -label "$label" \
971                    -value $label -variable [itcl::scope _curFldLabel] \
972                    -selectcolor red \
973                    -activebackground $itk_option(-plotbackground) \
974                    -activeforeground $itk_option(-plotforeground) \
975                    -font "Arial 8" \
976                    -command [itcl::code $this Combo invoke]
977                set _fields($fname) [list $label $units $components]
978                if { $_curFldName == "" } {
979                    set _curFldName $fname
980                    set _curFldLabel $label
981                }
982            }
983        }
984        $itk_component(field) value $_curFldLabel
985    }
986    InitSettings -isolinesvisible -surfacevisible -outline
987    if { $_reset } {
988        # These are settings that rely on a dataset being loaded.
989        InitSettings \
990            -surfacelighting \
991            -field \
992            -surfaceedges -surfacelighting -surfaceopacity \
993            -surfacewireframe \
994            -numcontours
995
996        Zoom reset
997        foreach axis { x y z } {
998            # Another problem fixed by a <view>. We looking into a data
999            # object for the name of the axes. This should be global to
1000            # the viewer itself.
1001            set label [$_first hints ${axis}label]
1002            if { $label == "" } {
1003                set label [string toupper $axis]
1004            }
1005            # May be a space in the axis label.
1006            SendCmd [list axis name $axis $label]
1007        }
1008        if { [array size _fields] < 2 } {
1009            blt::table forget $itk_component(field) $itk_component(field_l)
1010        }
1011        set _reset 0
1012    }
1013
1014    # Actually write the commands to the server socket.  If it fails, we don't
1015    # care.  We're finished here.
1016    blt::busy hold $itk_component(hull)
1017    StopBufferingCommands;              # Turn off buffering and send commands.
1018    blt::busy release $itk_component(hull)
1019}
1020
1021# ----------------------------------------------------------------------
1022# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1023#
1024# Returns a list of server IDs for the current datasets being displayed.  This
1025# is normally a single ID, but it might be a list of IDs if the current data
1026# object has multiple components.
1027# ----------------------------------------------------------------------
1028itcl::body Rappture::VtkSurfaceViewer::CurrentDatasets {args} {
1029    set flag [lindex $args 0]
1030    switch -- $flag {
1031        "-all" {
1032            if { [llength $args] > 1 } {
1033                error "CurrentDatasets: can't specify dataobj after \"-all\""
1034            }
1035            set dlist [get -objects]
1036        }
1037        "-visible" {
1038            if { [llength $args] > 1 } {
1039                set dlist {}
1040                set args [lrange $args 1 end]
1041                foreach dataobj $args {
1042                    if { [info exists _obj2ovride($dataobj-raise)] } {
1043                        lappend dlist $dataobj
1044                    }
1045                }
1046            } else {
1047                set dlist [get -visible]
1048            }
1049        }           
1050        default {
1051            set dlist $args
1052        }
1053    }
1054    set rlist ""
1055    foreach dataobj $dlist {
1056        foreach comp [$dataobj components] {
1057            set tag $dataobj-$comp
1058            if { [info exists _datasets($tag)] && $_datasets($tag) } {
1059                lappend rlist $tag
1060            }
1061        }
1062    }
1063    return $rlist
1064}
1065
1066# ----------------------------------------------------------------------
1067# USAGE: Zoom in
1068# USAGE: Zoom out
1069# USAGE: Zoom reset
1070#
1071# Called automatically when the user clicks on one of the zoom
1072# controls for this widget.  Changes the zoom for the current view.
1073# ----------------------------------------------------------------------
1074itcl::body Rappture::VtkSurfaceViewer::Zoom {option} {
1075    switch -- $option {
1076        "in" {
1077            set _view(zoom) [expr {$_view(zoom)*1.25}]
1078            SendCmd "camera zoom $_view(zoom)"
1079        }
1080        "out" {
1081            set _view(zoom) [expr {$_view(zoom)*0.8}]
1082            SendCmd "camera zoom $_view(zoom)"
1083        }
1084        "reset" {
1085            array set _view {
1086                qw     0.853553
1087                qx     -0.353553
1088                qy     0.353553
1089                qz     0.146447
1090                zoom   1.0
1091                xpan   0
1092                ypan   0
1093            }
1094            if { $_first != "" } {
1095                set location [$_first hints camera]
1096                if { $location != "" } {
1097                    array set _view $location
1098                }
1099            }
1100            set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1101            $_arcball quaternion $q
1102            DoRotate
1103            SendCmd "camera reset"
1104        }
1105    }
1106}
1107
1108itcl::body Rappture::VtkSurfaceViewer::PanCamera {} {
1109    set x $_view(xpan)
1110    set y $_view(ypan)
1111    SendCmd "camera pan $x $y"
1112}
1113
1114
1115# ----------------------------------------------------------------------
1116# USAGE: Rotate click <x> <y>
1117# USAGE: Rotate drag <x> <y>
1118# USAGE: Rotate release <x> <y>
1119#
1120# Called automatically when the user clicks/drags/releases in the
1121# plot area.  Moves the plot according to the user's actions.
1122# ----------------------------------------------------------------------
1123itcl::body Rappture::VtkSurfaceViewer::Rotate {option x y} {
1124    switch -- $option {
1125        "click" {
1126            $itk_component(view) configure -cursor fleur
1127            set _click(x) $x
1128            set _click(y) $y
1129        }
1130        "drag" {
1131            if {[array size _click] == 0} {
1132                Rotate click $x $y
1133            } else {
1134                set w [winfo width $itk_component(view)]
1135                set h [winfo height $itk_component(view)]
1136                if {$w <= 0 || $h <= 0} {
1137                    return
1138                }
1139
1140                if {[catch {
1141                    # this fails sometimes for no apparent reason
1142                    set dx [expr {double($x-$_click(x))/$w}]
1143                    set dy [expr {double($y-$_click(y))/$h}]
1144                }]} {
1145                    return
1146                }
1147                if { $dx == 0 && $dy == 0 } {
1148                    return
1149                }
1150                set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1151                EventuallyRotate $q
1152                set _click(x) $x
1153                set _click(y) $y
1154            }
1155        }
1156        "release" {
1157            Rotate drag $x $y
1158            $itk_component(view) configure -cursor ""
1159            catch {unset _click}
1160        }
1161        default {
1162            error "bad option \"$option\": should be click, drag, release"
1163        }
1164    }
1165}
1166
1167itcl::body Rappture::VtkSurfaceViewer::Pick {x y} {
1168    foreach tag [CurrentDatasets -visible] {
1169        SendCmdNoSplash "dataset getscalar pixel $x $y $tag"
1170    }
1171}
1172
1173# ----------------------------------------------------------------------
1174# USAGE: $this Pan click x y
1175#        $this Pan drag x y
1176#        $this Pan release x y
1177#
1178# Called automatically when the user clicks on one of the zoom
1179# controls for this widget.  Changes the zoom for the current view.
1180# ----------------------------------------------------------------------
1181itcl::body Rappture::VtkSurfaceViewer::Pan {option x y} {
1182    switch -- $option {
1183        "set" {
1184            set w [winfo width $itk_component(view)]
1185            set h [winfo height $itk_component(view)]
1186            set x [expr $x / double($w)]
1187            set y [expr $y / double($h)]
1188            set _view(xpan) [expr $_view(xpan) + $x]
1189            set _view(ypan) [expr $_view(ypan) + $y]
1190            PanCamera
1191            return
1192        }
1193        "click" {
1194            set _click(x) $x
1195            set _click(y) $y
1196            $itk_component(view) configure -cursor hand1
1197        }
1198        "drag" {
1199            if { ![info exists _click(x)] } {
1200                set _click(x) $x
1201            }
1202            if { ![info exists _click(y)] } {
1203                set _click(y) $y
1204            }
1205            set w [winfo width $itk_component(view)]
1206            set h [winfo height $itk_component(view)]
1207            set dx [expr ($_click(x) - $x)/double($w)]
1208            set dy [expr ($_click(y) - $y)/double($h)]
1209            set _click(x) $x
1210            set _click(y) $y
1211            set _view(xpan) [expr $_view(xpan) - $dx]
1212            set _view(ypan) [expr $_view(ypan) - $dy]
1213            PanCamera
1214        }
1215        "release" {
1216            Pan drag $x $y
1217            $itk_component(view) configure -cursor ""
1218        }
1219        default {
1220            error "unknown option \"$option\": should set, click, drag, or release"
1221        }
1222    }
1223}
1224
1225# ----------------------------------------------------------------------
1226# USAGE: InitSettings <what> ?<value>?
1227#
1228# Used internally to update rendering settings whenever parameters
1229# change in the popup settings panel.  Sends the new settings off
1230# to the back end.
1231# ----------------------------------------------------------------------
1232itcl::body Rappture::VtkSurfaceViewer::InitSettings { args } {
1233    foreach spec $args {
1234        if { [info exists _settings($_first-$spec)] } {
1235            # Reset global setting with dataobj specific setting
1236            set _settings($spec) $_settings($_first-$spec)
1237        }
1238        AdjustSetting $spec
1239    }
1240}
1241
1242#
1243# AdjustSetting --
1244#
1245#       Changes/updates a specific setting in the widget.  There are
1246#       usually user-setable option.  Commands are sent to the render
1247#       server.
1248#
1249itcl::body Rappture::VtkSurfaceViewer::AdjustSetting {what {value ""}} {
1250    if { ![isconnected] } {
1251        return
1252    }
1253    switch -- $what {
1254        "-background" {
1255            set bgcolor [$itk_component(background) value]
1256            array set fgcolors {
1257                "black" "white"
1258                "white" "black"
1259                "grey"  "black"
1260            }
1261            configure -plotbackground $bgcolor \
1262                -plotforeground $fgcolors($bgcolor)
1263            $itk_component(view) delete "legend"
1264            DrawLegend
1265        }
1266        "-axesvisible" {
1267            set bool $_settings(-axesvisible)
1268            SendCmd "axis visible all $bool"
1269        }
1270        "-axislabelsvisible" {
1271            set bool $_settings(-axislabelsvisible)
1272            SendCmd "axis labels all $bool"
1273        }
1274        "-xaxisgrid" - "-yaxisgrid" - "-zaxisgrid" {
1275            set axis [string tolower [string range $what 1 1]]
1276            set bool $_settings($what)
1277            SendCmd "axis grid $axis $bool"
1278        }
1279        "-axismode" {
1280            set mode [$itk_component(axisMode) value]
1281            set mode [$itk_component(axisMode) translate $mode]
1282            set _settings($what) $mode
1283            SendCmd "axis flymode $mode"
1284        }
1285        "-colormap" {
1286            set _changed($what) 1
1287            StartBufferingCommands
1288            set color [$itk_component(colormap) value]
1289            set _settings($what) $color
1290            if { $color == "none" } {
1291                if { $_settings(-colormapvisible) } {
1292                    SendCmd "contour2d colormode constant {}"
1293                    SendCmd "polydata colormode constant {}"
1294                    set _settings(-colormapvisible) 0
1295                }
1296            } else {
1297                if { !$_settings(-colormapvisible) } {
1298                    #SendCmd "contour2d colormode $_colorMode $_curFldName"
1299                    SendCmd "polydata colormode $_colorMode $_curFldName"
1300                    set _settings(-colormapvisible) 1
1301                }
1302                SetCurrentColormap $color
1303                if {$_settings(-colormapdiscrete)} {
1304                    set numColors [expr $_settings(-numcontours) + 1]
1305                    SendCmd "colormap res $numColors $color"
1306                }
1307            }
1308            StopBufferingCommands
1309            EventuallyRequestLegend
1310        }
1311        "-colormapdiscrete" {
1312            set bool $_settings($what)
1313            set numColors [expr $_settings(-numcontours) + 1]
1314            StartBufferingCommands
1315            if {$bool} {
1316                SendCmd "colormap res $numColors"
1317                # Discrete colormap requires preinterp on
1318                SendCmd "polydata preinterp on"
1319            } else {
1320                SendCmd "colormap res default"
1321                # FIXME: add setting for preinterp (default on)
1322                SendCmd "polydata preinterp on"
1323            }
1324            StopBufferingCommands
1325            EventuallyRequestLegend
1326        }
1327        "-numcontours" {
1328            set _settings($what) [$itk_component(numcontours) value]
1329            set _currentNumContours $_settings($what)
1330            UpdateContourList
1331            set _changed($what) 1
1332            SendCmd "contour2d contourlist [list $_contourList]"
1333            if {$_settings(-colormapdiscrete)} {
1334                set numColors [expr $_settings($what) + 1]
1335                SendCmd "colormap res $numColors"
1336                EventuallyRequestLegend
1337            } else {
1338                DrawLegend
1339            }
1340        }
1341        "-surfacewireframe" {
1342            set bool $_settings($what)
1343            SendCmd "polydata wireframe $bool"
1344        }
1345        "-isolinesvisible" {
1346            set bool $_settings($what)
1347            SendCmd "contour2d visible $bool"
1348            DrawLegend
1349        }
1350        "-surfacevisible" {
1351            set bool $_settings($what)
1352            SendCmd "polydata visible $bool"
1353            if { $bool } {
1354                Rappture::Tooltip::for $itk_component(surface) \
1355                    "Hide the surface"
1356            } else {
1357                Rappture::Tooltip::for $itk_component(surface) \
1358                    "Show the surface"
1359            }
1360            DrawLegend
1361        }
1362        "-surfacelighting" {
1363            set bool $_settings($what)
1364            SendCmd "polydata lighting $bool"
1365        }
1366        "-surfaceedges" {
1367            set bool $_settings($what)
1368            SendCmd "polydata edges $bool"
1369        }
1370        "-outline" {
1371            set bool $_settings($what)
1372            SendCmd "outline visible $bool"
1373        }
1374        "-isolinecolor" {
1375            set color [$itk_component(isolineColor) value]
1376            set _settings($what) $color
1377            SendCmd "contour2d linecolor [Color2RGB $color]"
1378            DrawLegend
1379        }
1380        "-surfaceopacity" {
1381            set val $_settings($what)
1382            set sval [expr { 0.01 * double($val) }]
1383            SendCmd "polydata opacity $sval"
1384        }
1385        "-field" {
1386            set label [$itk_component(field) value]
1387            set fname [$itk_component(field) translate $label]
1388            set _settings($what) $fname
1389            if { [info exists _fields($fname)] } {
1390                foreach { label units components } $_fields($fname) break
1391                if { $components > 1 } {
1392                    set _colorMode vmag
1393                } else {
1394                    set _colorMode scalar
1395                }
1396                set _curFldName $fname
1397                set _curFldLabel $label
1398            } else {
1399                puts stderr "unknown field \"$fname\""
1400                return
1401            }
1402            SendCmd "dataset scalar $_curFldName"
1403            if { ![info exists _limits($_curFldName)] } {
1404                SendCmd "dataset maprange all"
1405            } else {
1406                SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1407            }
1408            #SendCmd "contour2d colormode $_colorMode $_curFldName"
1409            SendCmd "polydata colormode $_colorMode $_curFldName"
1410            SendCmd "camera reset"
1411            UpdateContourList
1412            DrawLegend
1413        }
1414        "-legendvisible" {
1415            if { !$_settings($what) } {
1416                $itk_component(view) delete legend
1417            }
1418            DrawLegend
1419        }
1420        default {
1421            error "don't know how to fix $what"
1422        }
1423    }
1424}
1425
1426
1427#
1428# RequestLegend --
1429#
1430#       Request a new legend from the server.  The size of the legend
1431#       is determined from the height of the canvas. 
1432#
1433# This should be called when
1434#       1.  A new current colormap is set.
1435#       2.  Window is resized.
1436#       3.  The limits of the data have changed.  (Just need a redraw).
1437#       4.  Number of isolines have changed. (Just need a redraw).
1438#       5.  Legend becomes visible (Just need a redraw).
1439#
1440itcl::body Rappture::VtkSurfaceViewer::RequestLegend {} {
1441    set _legendPending 0
1442    if { ![info exists _fields($_curFldName)] } {
1443        return
1444    }
1445    set fname $_curFldName
1446    set font "Arial 8"
1447    set lineht [font metrics $font -linespace]
1448    set w 12
1449    set h [expr {$_height - 2 * ($lineht + 2)}]
1450    if { $h < 1 } {
1451        return
1452    }
1453    if { [string match "component*" $fname] } {
1454        set title ""
1455    } else {
1456        if { [info exists _fields($fname)] } {
1457            foreach { title units } $_fields($fname) break
1458            if { $units != "" } {
1459                set title [format "%s (%s)" $title $units]
1460            }
1461        } else {
1462            set title $fname
1463        }
1464    }
1465    # If there's a title too, subtract one more line
1466    if { $title != "" } {
1467        incr h -$lineht
1468    }
1469    # Set the legend on the first heightmap dataset.
1470    if { $_currentColormap != ""  } {
1471        set cmap $_currentColormap
1472        SendCmdNoWait "legend $cmap scalar $_curFldName {} $w $h 0"
1473    }
1474}
1475
1476# ----------------------------------------------------------------------
1477# CONFIGURATION OPTION: -plotbackground
1478# ----------------------------------------------------------------------
1479itcl::configbody Rappture::VtkSurfaceViewer::plotbackground {
1480    if { [isconnected] } {
1481        set rgb [Color2RGB $itk_option(-plotbackground)]
1482        SendCmd "screen bgcolor $rgb"
1483    }
1484}
1485
1486# ----------------------------------------------------------------------
1487# CONFIGURATION OPTION: -plotforeground
1488# ----------------------------------------------------------------------
1489itcl::configbody Rappture::VtkSurfaceViewer::plotforeground {
1490    if { [isconnected] } {
1491        set rgb [Color2RGB $itk_option(-plotforeground)]
1492        SendCmd "axis color all $rgb"
1493        SendCmd "outline color $rgb"
1494    }
1495}
1496
1497itcl::body Rappture::VtkSurfaceViewer::limits { dataobj } {
1498    foreach { limits(xmin) limits(xmax) } [$dataobj limits x] break
1499    foreach { limits(ymin) limits(ymax) } [$dataobj limits y] break
1500    foreach { limits(zmin) limits(zmax) } [$dataobj limits z] break
1501    foreach { limits(vmin) limits(vmax) } [$dataobj limits v] break
1502    return [array get limits]
1503}
1504
1505itcl::body Rappture::VtkSurfaceViewer::BuildSurfaceTab {} {
1506
1507    set fg [option get $itk_component(hull) font Font]
1508    #set bfg [option get $itk_component(hull) boldFont Font]
1509
1510    set inner [$itk_component(main) insert end \
1511        -title "Surface Settings" \
1512        -icon [Rappture::icon volume-on]]
1513    $inner configure -borderwidth 4
1514
1515    checkbutton $inner.surface \
1516        -text "Surface" \
1517        -variable [itcl::scope _settings(-surfacevisible)] \
1518        -command [itcl::code $this AdjustSetting -surfacevisible] \
1519        -font "Arial 9"
1520
1521    checkbutton $inner.isolines \
1522        -text "Isolines" \
1523        -variable [itcl::scope _settings(-isolinesvisible)] \
1524        -command [itcl::code $this AdjustSetting -isolinesvisible] \
1525        -font "Arial 9"
1526
1527    checkbutton $inner.colormapDiscrete \
1528        -text "Discrete Colormap" \
1529        -variable [itcl::scope _settings(-colormapdiscrete)] \
1530        -command [itcl::code $this AdjustSetting -colormapdiscrete] \
1531        -font "Arial 9"
1532
1533    checkbutton $inner.wireframe \
1534        -text "Wireframe" \
1535        -variable [itcl::scope _settings(-surfacewireframe)] \
1536        -command [itcl::code $this AdjustSetting -surfacewireframe] \
1537        -font "Arial 9"
1538
1539    checkbutton $inner.lighting \
1540        -text "Enable Lighting" \
1541        -variable [itcl::scope _settings(-surfacelighting)] \
1542        -command [itcl::code $this AdjustSetting -surfacelighting] \
1543        -font "Arial 9"
1544
1545    checkbutton $inner.edges \
1546        -text "Edges" \
1547        -variable [itcl::scope _settings(-surfaceedges)] \
1548        -command [itcl::code $this AdjustSetting -surfaceedges] \
1549        -font "Arial 9"
1550
1551    checkbutton $inner.outline \
1552        -text "Outline" \
1553        -variable [itcl::scope _settings(-outline)] \
1554        -command [itcl::code $this AdjustSetting -outline] \
1555        -font "Arial 9"
1556
1557    checkbutton $inner.legend \
1558        -text "Legend" \
1559        -variable [itcl::scope _settings(-legendvisible)] \
1560        -command [itcl::code $this AdjustSetting -legendvisible] \
1561        -font "Arial 9"
1562
1563    label $inner.linecolor_l -text "Isolines" -font "Arial 9"
1564    itk_component add isolineColor {
1565        Rappture::Combobox $inner.linecolor -width 10 -editable 0
1566    }
1567    $inner.linecolor choices insert end \
1568        "black"              "black"            \
1569        "blue"               "blue"             \
1570        "cyan"               "cyan"             \
1571        "green"              "green"            \
1572        "grey"               "grey"             \
1573        "magenta"            "magenta"          \
1574        "orange"             "orange"           \
1575        "red"                "red"              \
1576        "white"              "white"            \
1577        "none"               "none"
1578
1579    $itk_component(isolineColor) value "white"
1580    bind $inner.linecolor <<Value>> \
1581        [itcl::code $this AdjustSetting -isolinecolor]
1582
1583    label $inner.background_l -text "Background" -font "Arial 9"
1584    itk_component add background {
1585        Rappture::Combobox $inner.background -width 10 -editable 0
1586    }
1587    $inner.background choices insert end \
1588        "black"              "black"            \
1589        "white"              "white"            \
1590        "grey"               "grey"             
1591
1592    $itk_component(background) value $_settings(-background)
1593    bind $inner.background <<Value>> \
1594        [itcl::code $this AdjustSetting -background]
1595
1596    label $inner.opacity_l -text "Opacity" -font "Arial 9"
1597    ::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1598        -variable [itcl::scope _settings(-surfaceopacity)] \
1599        -width 10 \
1600        -showvalue off \
1601        -command [itcl::code $this AdjustSetting -surfaceopacity]
1602
1603    itk_component add field_l {
1604        label $inner.field_l -text "Field" -font "Arial 9"
1605    } {
1606        ignore -font
1607    }
1608    itk_component add field {
1609        Rappture::Combobox $inner.field -width 10 -editable 0
1610    }
1611    bind $inner.field <<Value>> \
1612        [itcl::code $this AdjustSetting -field]
1613
1614    label $inner.colormap_l -text "Colormap" -font "Arial 9"
1615    itk_component add colormap {
1616        Rappture::Combobox $inner.colormap -width 10 -editable 0
1617    }
1618    $inner.colormap choices insert end [GetColormapList]
1619
1620    $itk_component(colormap) value "BCGYR"
1621    bind $inner.colormap <<Value>> \
1622        [itcl::code $this AdjustSetting -colormap]
1623
1624    label $inner.numcontours_l -text "Number of Isolines" -font "Arial 9"
1625    itk_component add numcontours {
1626        Rappture::Spinint $inner.numcontours \
1627            -min 0 -max 50 -font "arial 9"
1628    }
1629    $itk_component(numcontours) value $_settings(-numcontours)
1630    bind $itk_component(numcontours) <<Value>> \
1631        [itcl::code $this AdjustSetting -numcontours]
1632
1633    blt::table $inner \
1634        0,0 $inner.field_l   -anchor w -pady 2  \
1635        0,1 $inner.field     -anchor w -pady 2  -fill x \
1636        1,0 $inner.colormap_l -anchor w -pady 2  \
1637        1,1 $inner.colormap   -anchor w -pady 2  -fill x \
1638        2,0 $inner.linecolor_l  -anchor w -pady 2  \
1639        2,1 $inner.linecolor    -anchor w -pady 2 -fill x  \
1640        3,0 $inner.background_l -anchor w -pady 2 \
1641        3,1 $inner.background -anchor w -pady 2  -fill x \
1642        4,0 $inner.numcontours_l -anchor w -pady 2 \
1643        4,1 $inner.numcontours -anchor w -pady 2 \
1644        5,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
1645        6,0 $inner.isolines  -anchor w -pady 2 -cspan 2 \
1646        7,0 $inner.wireframe -anchor w -pady 2 -cspan 2 \
1647        8,0 $inner.lighting  -anchor w -pady 2 -cspan 2 \
1648        9,0 $inner.edges     -anchor w -pady 2 -cspan 2 \
1649        10,0 $inner.outline   -anchor w -pady 2 -cspan 2 \
1650        11,0 $inner.legend    -anchor w -pady 2 \
1651        12,0 $inner.opacity_l -anchor w -pady 2 \
1652        12,1 $inner.opacity   -fill x   -pady 2 -fill x \
1653
1654    blt::table configure $inner r* c* -resize none
1655    blt::table configure $inner r13 c1 -resize expand
1656}
1657
1658itcl::body Rappture::VtkSurfaceViewer::BuildAxisTab {} {
1659
1660    set fg [option get $itk_component(hull) font Font]
1661    #set bfg [option get $itk_component(hull) boldFont Font]
1662
1663    set inner [$itk_component(main) insert end \
1664        -title "Axis Settings" \
1665        -icon [Rappture::icon axis2]]
1666    $inner configure -borderwidth 4
1667
1668    checkbutton $inner.visible \
1669        -text "Show Axes" \
1670        -variable [itcl::scope _settings(-axesvisible)] \
1671        -command [itcl::code $this AdjustSetting -axesvisible] \
1672        -font "Arial 9"
1673
1674    checkbutton $inner.labels \
1675        -text "Show Axis Labels" \
1676        -variable [itcl::scope _settings(-axislabelsvisible)] \
1677        -command [itcl::code $this AdjustSetting -axislabelsvisible] \
1678        -font "Arial 9"
1679
1680    checkbutton $inner.gridx \
1681        -text "Show X Grid" \
1682        -variable [itcl::scope _settings(-xaxisgrid)] \
1683        -command [itcl::code $this AdjustSetting -xaxisgrid] \
1684        -font "Arial 9"
1685    checkbutton $inner.gridy \
1686        -text "Show Y Grid" \
1687        -variable [itcl::scope _settings(-yaxisgrid)] \
1688        -command [itcl::code $this AdjustSetting -yaxisgrid] \
1689        -font "Arial 9"
1690    checkbutton $inner.gridz \
1691        -text "Show Z Grid" \
1692        -variable [itcl::scope _settings(-zaxisgrid)] \
1693        -command [itcl::code $this AdjustSetting -zaxisgrid] \
1694        -font "Arial 9"
1695
1696    label $inner.mode_l -text "Mode" -font "Arial 9"
1697
1698    itk_component add axisMode {
1699        Rappture::Combobox $inner.mode -width 10 -editable 0
1700    }
1701    $inner.mode choices insert end \
1702        "static_triad"    "static" \
1703        "closest_triad"   "closest" \
1704        "furthest_triad"  "farthest" \
1705        "outer_edges"     "outer"         
1706    $itk_component(axisMode) value "static"
1707    bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axismode]
1708
1709    blt::table $inner \
1710        0,0 $inner.visible -anchor w -cspan 2 \
1711        1,0 $inner.labels  -anchor w -cspan 2 \
1712        2,0 $inner.gridx   -anchor w -cspan 2 \
1713        3,0 $inner.gridy   -anchor w -cspan 2 \
1714        4,0 $inner.gridz   -anchor w -cspan 2 \
1715        5,0 $inner.mode_l  -anchor w -cspan 2 -padx { 2 0 } \
1716        6,0 $inner.mode    -fill x   -cspan 2
1717
1718    blt::table configure $inner r* c* -resize none
1719    blt::table configure $inner r7 c1 -resize expand
1720}
1721
1722
1723itcl::body Rappture::VtkSurfaceViewer::BuildCameraTab {} {
1724    set inner [$itk_component(main) insert end \
1725        -title "Camera Settings" \
1726        -icon [Rappture::icon camera]]
1727    $inner configure -borderwidth 4
1728
1729    label $inner.view_l -text "view" -font "Arial 9"
1730    set f [frame $inner.view]
1731    foreach side { front back left right top bottom } {
1732        button $f.$side  -image [Rappture::icon view$side] \
1733            -command [itcl::code $this SetOrientation $side]
1734        Rappture::Tooltip::for $f.$side "Change the view to $side"
1735        pack $f.$side -side left
1736    }
1737
1738    blt::table $inner \
1739        0,0 $inner.view_l -anchor e -pady 2 \
1740        0,1 $inner.view -anchor w -pady 2
1741
1742    set labels { qx qy qz qw xpan ypan zoom }
1743    set row 1
1744    foreach tag $labels {
1745        label $inner.${tag}label -text $tag -font "Arial 9"
1746        entry $inner.${tag} -font "Arial 9"  -bg white \
1747            -textvariable [itcl::scope _view($tag)]
1748        bind $inner.${tag} <KeyPress-Return> \
1749            [itcl::code $this camera set ${tag}]
1750        blt::table $inner \
1751            $row,0 $inner.${tag}label -anchor e -pady 2 \
1752            $row,1 $inner.${tag} -anchor w -pady 2
1753        blt::table configure $inner r$row -resize none
1754        incr row
1755    }
1756    checkbutton $inner.ortho \
1757        -text "Orthographic Projection" \
1758        -variable [itcl::scope _view(ortho)] \
1759        -command [itcl::code $this camera set ortho] \
1760        -font "Arial 9"
1761    blt::table $inner \
1762            $row,0 $inner.ortho -cspan 2 -anchor w -pady 2
1763    blt::table configure $inner r$row -resize none
1764    incr row
1765
1766    blt::table configure $inner c* r* -resize none
1767    blt::table configure $inner c2 -resize expand
1768    blt::table configure $inner r$row -resize expand
1769}
1770
1771#
1772#  camera --
1773#
1774itcl::body Rappture::VtkSurfaceViewer::camera {option args} {
1775    switch -- $option {
1776        "show" {
1777            puts [array get _view]
1778        }
1779        "set" {
1780            set who [lindex $args 0]
1781            set x $_view($who)
1782            set code [catch { string is double $x } result]
1783            if { $code != 0 || !$result } {
1784                return
1785            }
1786            switch -- $who {
1787                "ortho" {
1788                    if {$_view(ortho)} {
1789                        SendCmd "camera mode ortho"
1790                    } else {
1791                        SendCmd "camera mode persp"
1792                    }
1793                }
1794                "xpan" - "ypan" {
1795                    PanCamera
1796                }
1797                "qx" - "qy" - "qz" - "qw" {
1798                    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1799                    $_arcball quaternion $q
1800                    EventuallyRotate $q
1801                }
1802                "zoom" {
1803                    SendCmd "camera zoom $_view(zoom)"
1804                }
1805             }
1806        }
1807    }
1808}
1809
1810itcl::body Rappture::VtkSurfaceViewer::GetVtkData { args } {
1811    set bytes ""
1812    foreach dataobj [get] {
1813        foreach cname [$dataobj components] {
1814            set tag $dataobj-$cname
1815            set contents [$dataobj vtkdata $cname]
1816            append bytes "$contents\n"
1817        }
1818    }
1819    return [list .vtk $bytes]
1820}
1821
1822itcl::body Rappture::VtkSurfaceViewer::GetImage { args } {
1823    if { [image width $_image(download)] > 0 &&
1824         [image height $_image(download)] > 0 } {
1825        set bytes [$_image(download) data -format "jpeg -quality 100"]
1826        set bytes [Rappture::encoding::decode -as b64 $bytes]
1827        return [list .jpg $bytes]
1828    }
1829    return ""
1830}
1831
1832itcl::body Rappture::VtkSurfaceViewer::BuildDownloadPopup { popup command } {
1833    Rappture::Balloon $popup \
1834        -title "[Rappture::filexfer::label downloadWord] as..."
1835    set inner [$popup component inner]
1836    label $inner.summary -text "" -anchor w
1837    radiobutton $inner.vtk_button -text "VTK data file" \
1838        -variable [itcl::scope _downloadPopup(format)] \
1839        -font "Arial 9 " \
1840        -value vtk 
1841    Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
1842    radiobutton $inner.image_button -text "Image File" \
1843        -variable [itcl::scope _downloadPopup(format)] \
1844        -font "Arial 9 " \
1845        -value image
1846    Rappture::Tooltip::for $inner.image_button \
1847        "Save as digital image."
1848
1849    button $inner.ok -text "Save" \
1850        -highlightthickness 0 -pady 2 -padx 3 \
1851        -command $command \
1852        -compound left \
1853        -image [Rappture::icon download]
1854
1855    button $inner.cancel -text "Cancel" \
1856        -highlightthickness 0 -pady 2 -padx 3 \
1857        -command [list $popup deactivate] \
1858        -compound left \
1859        -image [Rappture::icon cancel]
1860
1861    blt::table $inner \
1862        0,0 $inner.summary -cspan 2  \
1863        1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
1864        2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
1865        4,1 $inner.cancel -width .9i -fill y \
1866        4,0 $inner.ok -padx 2 -width .9i -fill y
1867    blt::table configure $inner r3 -height 4
1868    blt::table configure $inner r4 -pady 4
1869    raise $inner.image_button
1870    $inner.vtk_button invoke
1871    return $inner
1872}
1873
1874itcl::body Rappture::VtkSurfaceViewer::SetObjectStyle { dataobj comp } {
1875    # Parse style string.
1876    set tag $dataobj-$comp
1877    array set style {
1878        -color BCGYR
1879        -edgecolor black
1880        -edges 0
1881        -isolinecolor white
1882        -isolinesvisible 0
1883        -levels 10
1884        -lighting 1
1885        -linewidth 1.0
1886        -opacity 1.0
1887        -outline 0
1888        -surfacevisible 1
1889        -wireframe 0
1890    }
1891    array set style [$dataobj style $comp]
1892    if { $dataobj != $_first || $style(-levels) == 1 } {
1893        set style(-opacity) 1
1894    }
1895
1896    # This is too complicated.  We want to set the colormap, number of
1897    # isolines and opacity for the dataset.  They can be the default values,
1898    # the style hints loaded with the dataset, or set by user controls.  As
1899    # datasets get loaded, they first use the defaults that are overidden
1900    # by the style hints.  If the user changes the global controls, then that
1901    # overrides everything else.  I don't know what it means when global
1902    # controls are specified as style hints by each dataset.  It complicates
1903    # the code to handle aberrant cases.
1904
1905    if { $_changed(-surfaceopacity) } {
1906        set style(-opacity) [expr $_settings(-surfaceopacity) * 0.01]
1907    }
1908    if { $_changed(-numcontours) } {
1909        set style(-levels) $_settings(-numcontours)
1910    }
1911    if { $_changed(-colormap) } {
1912        set style(-color) $_settings(-colormap)
1913    }
1914    if { $_currentColormap == "" } {
1915        SetCurrentColormap $style(-color)
1916        $itk_component(colormap) value $style(-color)
1917    }
1918    if { $_currentNumContours != $style(-levels) } {
1919        set _currentNumContours $style(-levels)
1920        set _settings(-numcontours) $_currentNumContours
1921        $itk_component(numcontours) value $_currentNumContours
1922        UpdateContourList
1923        DrawLegend
1924    }
1925    set _settings(-isolinesvisible) $style(-isolinesvisible)
1926    set _settings(-surfacevisible) $style(-surfacevisible)
1927 
1928    SendCmd "outline add $tag"
1929    SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
1930    SendCmd "outline visible $style(-outline) $tag"
1931    set _settings(-outline) $style(-outline)
1932
1933    SendCmd "polydata add $tag"
1934    SendCmd "polydata edges $style(-edges) $tag"
1935    set _settings(-surfaceedges) $style(-edges)
1936    #SendCmd "polydata color [Color2RGB $settings(-color)] $tag"
1937    SendCmd "polydata lighting $style(-lighting) $tag"
1938    set _settings(-surfacelighting) $style(-lighting)
1939    SendCmd "polydata linecolor [Color2RGB $style(-edgecolor)] $tag"
1940    SendCmd "polydata linewidth $style(-linewidth) $tag"
1941    SendCmd "polydata opacity $style(-opacity) $tag"
1942    set _settings(-surfaceopacity) [expr $style(-opacity) * 100.0]
1943    SetCurrentColormap $style(-color)
1944    SendCmd "polydata wireframe $style(-wireframe) $tag"
1945    set _settings(-surfacewireframe) $style(-wireframe)
1946
1947    SendCmd [list contour2d add contourlist $_contourList $tag]
1948    SendCmd "contour2d colormode constant {} $tag"
1949    SendCmd "contour2d color [Color2RGB $style(-isolinecolor)] $tag"
1950}
1951
1952itcl::body Rappture::VtkSurfaceViewer::IsValidObject { dataobj } {
1953    if {[catch {$dataobj isa Rappture::Field} valid] != 0 || !$valid} {
1954        return 0
1955    }
1956    return 1
1957}
1958
1959#
1960# EnterLegend --
1961#
1962itcl::body Rappture::VtkSurfaceViewer::EnterLegend { x y } {
1963    SetLegendTip $x $y
1964}
1965
1966#
1967# MotionLegend --
1968#
1969itcl::body Rappture::VtkSurfaceViewer::MotionLegend { x y } {
1970    Rappture::Tooltip::tooltip cancel
1971    set c $itk_component(view)
1972    set cw [winfo width $c]
1973    set ch [winfo height $c]
1974    if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
1975        SetLegendTip $x $y
1976    }
1977}
1978
1979#
1980# LeaveLegend --
1981#
1982itcl::body Rappture::VtkSurfaceViewer::LeaveLegend { } {
1983    Rappture::Tooltip::tooltip cancel
1984    .rappturetooltip configure -icon ""
1985}
1986
1987#
1988# SetLegendTip --
1989#
1990itcl::body Rappture::VtkSurfaceViewer::SetLegendTip { x y } {
1991    set fname $_curFldName
1992    set c $itk_component(view)
1993    set w [winfo width $c]
1994    set h [winfo height $c]
1995
1996    set font "Arial 8"
1997    set lineht [font metrics $font -linespace]
1998   
1999    set ih [image height $_image(legend)]
2000    set iy [expr $y - ($lineht + 2)]
2001
2002    if { [string match "component*" $fname] } {
2003        set title ""
2004    } else {
2005        if { [info exists _fields($fname)] } {
2006            foreach { title units } $_fields($fname) break
2007            if { $units != "" } {
2008                set title [format "%s (%s)" $title $units]
2009            }
2010        } else {
2011            set title $fname
2012        }
2013    }
2014    # If there's a legend title, increase the offset by the line height.
2015    if { $title != "" } {
2016        incr iy -$lineht
2017    }
2018    # Make a swatch of the selected color
2019    if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2020        return
2021    }
2022    if { ![info exists _image(swatch)] } {
2023        set _image(swatch) [image create photo -width 24 -height 24]
2024    }
2025    set color [eval format "\#%02x%02x%02x" $pixel]
2026    $_image(swatch) put black  -to 0 0 23 23
2027    $_image(swatch) put $color -to 1 1 22 22
2028    .rappturetooltip configure -icon $_image(swatch)
2029
2030    # Compute the value of the point
2031    if { [info exists _limits($_curFldName)] } {
2032        foreach { vmin vmax } $_limits($_curFldName) break
2033        set t [expr 1.0 - (double($iy) / double($ih-1))]
2034        set value [expr $t * ($vmax - $vmin) + $vmin]
2035    } else {
2036        set value 0.0
2037    }
2038    set tx [expr $x + 15]
2039    set ty [expr $y - 5]
2040    if { [info exists _isolines($y)] } {
2041        Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2042    } else {
2043        Rappture::Tooltip::text $c [format "$title %g" $value]
2044    }
2045    Rappture::Tooltip::tooltip show $c +$tx,+$ty   
2046}
2047
2048#
2049# ReceiveLegend --
2050#
2051#       Invoked automatically whenever the "legend" command comes in from
2052#       the rendering server.  Indicates that binary image data with the
2053#       specified <size> will follow.
2054#
2055itcl::body Rappture::VtkSurfaceViewer::ReceiveLegend { colormap title min max size } {
2056    #puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2057    set _title $title
2058    regsub {\(mag\)} $title "" _title
2059    if { [IsConnected] } {
2060        set bytes [ReceiveBytes $size]
2061        if { ![info exists _image(legend)] } {
2062            set _image(legend) [image create photo]
2063        }
2064        $_image(legend) configure -data $bytes
2065        #puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2066        if { [catch {DrawLegend} errs] != 0 } {
2067            global errorInfo
2068            puts stderr "errs=$errs errorInfo=$errorInfo"
2069        }
2070    }
2071}
2072
2073#
2074# DrawLegend --
2075#
2076#       Draws the legend in the own canvas on the right side of the plot area.
2077#
2078itcl::body Rappture::VtkSurfaceViewer::DrawLegend {} {
2079    set fname $_curFldName
2080    set c $itk_component(view)
2081    set w [winfo width $c]
2082    set h [winfo height $c]
2083    set font "Arial 8"
2084    set lineht [font metrics $font -linespace]
2085
2086    if { [string match "component*" $fname] } {
2087        set title ""
2088    } else {
2089        if { [info exists _fields($fname)] } {
2090            foreach { title units } $_fields($fname) break
2091            if { $units != "" } {
2092                set title [format "%s (%s)" $title $units]
2093            }
2094        } else {
2095            set title $fname
2096        }
2097    }
2098    set x [expr $w - 2]
2099    if { !$_settings(-legendvisible) } {
2100        $c delete legend
2101        return
2102    }
2103    if { [$c find withtag "legend"] == "" } {
2104        set y 2
2105        # If there's a legend title, create a text item for the title.
2106        $c create text $x $y \
2107            -anchor ne \
2108            -fill $itk_option(-plotforeground) -tags "title legend" \
2109            -font $font
2110        if { $title != "" } {
2111            incr y $lineht
2112        }
2113        $c create text $x $y \
2114            -anchor ne \
2115            -fill $itk_option(-plotforeground) -tags "vmax legend" \
2116            -font $font
2117        incr y $lineht
2118        $c create image $x $y \
2119            -anchor ne \
2120            -image $_image(legend) -tags "colormap legend"
2121        $c create rectangle $x $y 1 1 \
2122            -fill "" -outline "" -tags "sensor legend"
2123        $c create text $x [expr {$h-2}] \
2124            -anchor se \
2125            -fill $itk_option(-plotforeground) -tags "vmin legend" \
2126            -font $font
2127        $c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2128        $c bind sensor <Leave> [itcl::code $this LeaveLegend]
2129        $c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2130    }
2131    $c delete isoline
2132    set x2 $x
2133    set iw [image width $_image(legend)]
2134    set ih [image height $_image(legend)]
2135    set x1 [expr $x2 - ($iw*12)/10]
2136    set color $_settings(-isolinecolor)
2137    # Draw the isolines on the legend.
2138    array unset _isolines
2139    if { $color != "none"  && [info exists _limits($_curFldName)] &&
2140         $_settings(-isolinesvisible) && $_settings(-numcontours) > 0 } {
2141
2142        foreach { vmin vmax } $_limits($_curFldName) break
2143        set range [expr double($vmax - $vmin)]
2144        if { $range <= 0.0 } {
2145            set range 1.0;              # Min is greater or equal to max.
2146        }
2147        set tags "isoline legend"
2148        set offset [expr 2 + $lineht]
2149        if { $title != "" } {
2150            incr offset $lineht
2151        }
2152        foreach value $_contourList {
2153            set norm [expr 1.0 - (($value - $vmin) / $range)]
2154            set y1 [expr int(round(($norm * $ih) + $offset))]
2155            for { set off 0 } { $off < 3 } { incr off } {
2156                set _isolines([expr $y1 + $off]) $value
2157                set _isolines([expr $y1 - $off]) $value
2158            }
2159            $c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2160        }
2161    }
2162
2163    $c bind title <ButtonPress> [itcl::code $this Combo post]
2164    $c bind title <Enter> [itcl::code $this Combo activate]
2165    $c bind title <Leave> [itcl::code $this Combo deactivate]
2166    # Reset the item coordinates according the current size of the plot.
2167    $c itemconfigure title -text $title
2168    if { [info exists _limits($_curFldName)] } {
2169        foreach { vmin vmax } $_limits($_curFldName) break
2170        $c itemconfigure vmin -text [format %g $vmin]
2171        $c itemconfigure vmax -text [format %g $vmax]
2172    }
2173    set y 2
2174    # If there's a legend title, move the title to the correct position
2175    if { $title != "" } {
2176        $c itemconfigure title -text $title
2177        $c coords title $x $y
2178        incr y $lineht
2179        $c raise title
2180    }
2181    $c coords vmax $x $y
2182    incr y $lineht
2183    $c coords colormap $x $y
2184    $c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2185    $c raise sensor
2186    $c coords vmin $x [expr {$h - 2}]
2187}
2188
2189# ----------------------------------------------------------------------
2190# USAGE: _dropdown post
2191# USAGE: _dropdown unpost
2192# USAGE: _dropdown select
2193#
2194# Used internally to handle the dropdown list for this combobox.  The
2195# post/unpost options are invoked when the list is posted or unposted
2196# to manage the relief of the controlling button.  The select option
2197# is invoked whenever there is a selection from the list, to assign
2198# the value back to the gauge.
2199# ----------------------------------------------------------------------
2200itcl::body Rappture::VtkSurfaceViewer::Combo {option} {
2201    set c $itk_component(view)
2202    switch -- $option {
2203        post {
2204            foreach { x1 y1 x2 y2 } [$c bbox title] break
2205            set cw [winfo width $itk_component(view)]
2206            set mw [winfo reqwidth $itk_component(fieldmenu)]
2207            set x1 [expr $cw - $mw]
2208            set x [expr $x1 + [winfo rootx $itk_component(view)]]
2209            set y [expr $y2 + [winfo rooty $itk_component(view)]]
2210            tk_popup $itk_component(fieldmenu) $x $y
2211        }
2212        activate {
2213            $c itemconfigure title -fill red
2214        }
2215        deactivate {
2216            $c itemconfigure title -fill $itk_option(-plotforeground)
2217        }
2218        invoke {
2219            $itk_component(field) value $_curFldLabel
2220            AdjustSetting -field
2221        }
2222        default {
2223            error "bad option \"$option\": should be post, unpost, select"
2224        }
2225    }
2226}
2227
2228#
2229# SetCurrentColormap --
2230#
2231itcl::body Rappture::VtkSurfaceViewer::SetCurrentColormap { name } {
2232    # Keep track of the colormaps that we build.
2233    if { ![info exists _colormaps($name)] } {
2234        BuildColormap $name
2235        set _colormaps($name) 1
2236    }
2237    set _currentColormap $name
2238    SendCmd "contour2d colormap $_currentColormap"
2239    SendCmd "polydata colormap $_currentColormap"
2240}
2241
2242#
2243# BuildColormap --
2244#
2245#       Build the designated colormap on the server.
2246#
2247itcl::body Rappture::VtkSurfaceViewer::BuildColormap { name } {
2248    set cmap [ColorsToColormap $name]
2249    if { [llength $cmap] == 0 } {
2250        set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
2251    }
2252    set wmap "0.0 1.0 1.0 1.0"
2253    SendCmd "colormap add $name { $cmap } { $wmap }"
2254}
2255
2256itcl::body Rappture::VtkSurfaceViewer::SetOrientation { side } {
2257    array set positions {
2258        front "1 0 0 0"
2259        back  "0 0 1 0"
2260        left  "0.707107 0 -0.707107 0"
2261        right "0.707107 0 0.707107 0"
2262        top   "0.707107 -0.707107 0 0"
2263        bottom "0.707107 0.707107 0 0"
2264    }
2265    foreach name { qw qx qy qz } value $positions($side) {
2266        set _view($name) $value
2267    }
2268    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2269    $_arcball quaternion $q
2270    SendCmd "camera orient $q"
2271    SendCmd "camera reset"
2272    set _view(xpan) 0
2273    set _view(ypan) 0
2274    set _view(zoom) 1.0
2275}
2276
2277itcl::body Rappture::VtkSurfaceViewer::UpdateContourList {} {
2278    if { ![info exists _limits($_curFldName)] } {
2279        return
2280    }
2281    if { $_currentNumContours < 1 } {
2282        set _contourList ""
2283        return
2284    }
2285    foreach { vmin vmax } $_limits($_curFldName) break
2286    set v [blt::vector create \#auto]
2287    $v seq $vmin $vmax [expr $_currentNumContours+2]
2288    $v delete end 0
2289    set _contourList [$v range 0 end]
2290    blt::vector destroy $v
2291}
2292
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