source: branches/1.3/gui/scripts/vtkheightmapviewer.tcl @ 4533

Last change on this file since 4533 was 4533, checked in by gah, 7 years ago

update regression tester

File size: 87.3 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# ======================================================================
14package require Itk
15package require BLT
16#package require Img
17
18option add *VtkHeightmapViewer.width 4i widgetDefault
19option add *VtkHeightmapViewer*cursor crosshair widgetDefault
20option add *VtkHeightmapViewer.height 4i widgetDefault
21option add *VtkHeightmapViewer.foreground black widgetDefault
22option add *VtkHeightmapViewer.controlBackground gray widgetDefault
23option add *VtkHeightmapViewer.controlDarkBackground #999999 widgetDefault
24option add *VtkHeightmapViewer.plotBackground black widgetDefault
25option add *VtkHeightmapViewer.plotForeground white widgetDefault
26option add *VtkHeightmapViewer.font \
27    -*-helvetica-medium-r-normal-*-12-* widgetDefault
28
29# must use this name -- plugs into Rappture::resources::load
30proc VtkHeightmapViewer_init_resources {} {
31    Rappture::resources::register \
32        vtkvis_server Rappture::VtkHeightmapViewer::SetServerList
33}
34
35itcl::class Rappture::VtkHeightmapViewer {
36    inherit Rappture::VisViewer
37
38    itk_option define -plotforeground plotForeground Foreground ""
39    itk_option define -plotbackground plotBackground Background ""
40    itk_option define -mode mode Mode "contour"
41
42    constructor { hostlist args } {
43        Rappture::VisViewer::constructor $hostlist
44    } {
45        # defined below
46    }
47    destructor {
48        # defined below
49    }
50    public proc SetServerList { namelist } {
51        Rappture::VisViewer::SetServerList "vtkvis" $namelist
52    }
53    public method add {dataobj {settings ""}}
54    public method camera {option args}
55    public method delete {args}
56    public method disconnect {}
57    public method download {option args}
58    public method get {args}
59    public method isconnected {}
60    public method limits3 { dataobj }
61    public method parameters {title args} {
62        # do nothing
63    }
64    public method scale {args}
65
66    protected method CameraReset {}
67    protected method Connect {}
68    protected method CurrentDatasets {args}
69    protected method Disconnect {}
70    protected method DoResize {}
71    protected method DoRotate {}
72    protected method AdjustSetting {what {value ""}}
73    protected method AdjustMode {}
74    protected method InitSettings { args  }
75    protected method Pan {option x y}
76    protected method Pick {x y}
77    protected method Rebuild {}
78    protected method ReceiveDataset { args }
79    protected method ReceiveImage { args }
80    protected method ReceiveLegend { colormap title min max size }
81    protected method Rotate {option x y}
82    protected method Zoom {option}
83
84    # The following methods are only used by this class.
85    private method BuildAxisTab {}
86    private method BuildCameraTab {}
87    private method BuildColormap { name }
88    private method BuildContourTab {}
89    private method BuildDownloadPopup { widget command }
90    private method Combo { option }
91    private method DrawLegend {}
92    private method EnterLegend { x y }
93    private method EventuallyRequestLegend {}
94    private method EventuallyResize { w h }
95    private method EventuallyRotate { q }
96    private method GetImage { args }
97    private method GetVtkData { args }
98    private method IsValidObject { dataobj }
99    private method LeaveLegend {}
100    private method MotionLegend { x y }
101    private method PanCamera {}
102    private method RequestLegend {}
103    private method SetCurrentColormap { color }
104    private method SetLegendTip { x y }
105    private method SetObjectStyle { dataobj comp }
106    private method GetHeightmapScale {}
107    private method ResetAxes {}
108    private method SetOrientation { side }
109    private method UpdateContourList {}
110
111    private variable _arcball ""
112    private variable _dlist ""     ;    # list of data objects
113    private variable _obj2datasets
114    private variable _obj2ovride   ;    # maps dataobj => style override
115    private variable _comp2scale;       # maps dataset to the heightmap scale.
116    private variable _datasets     ;    # contains all the dataobj-component
117                                   ;    # datasets in the server
118    private variable _colormaps    ;    # contains all the colormaps
119                                   ;    # in the server.
120
121    # The name of the current colormap used.  The colormap is global to all
122    # heightmaps displayed.
123    private variable _currentColormap ""
124    private variable _currentNumIsolines -1
125
126    private variable _maxScale 100;     # This is the # of times the x-axis
127                                        # and y-axis ranges can differ before
128                                        # automatically turning on
129                                        # -stretchtofit
130
131    private variable _click        ;    # info used for rotate operations
132    private variable _limits       ;    # Holds overall limits for all dataobjs
133                                        # using the viewer.
134    private variable _view         ;    # view params for 3D view
135    private variable _settings
136    private variable _changed
137    private variable _initialStyle "";  # First found style in dataobjects.
138    private variable _reset 1;          # Indicates if camera needs to be reset
139                                        # to starting position.
140    private variable _beforeConnect 1;  # Indicates if camera needs to be reset
141                                        # to starting position.
142
143    private variable _first ""     ;    # This is the topmost dataset.
144    private variable _start 0
145    private variable _isolines
146    private variable _contourList ""
147
148    common _downloadPopup;              # download options from popup
149    private common _hardcopy
150    private variable _width 0
151    private variable _height 0
152    private variable _legendWidth 0
153    private variable _legendHeight 0
154    private variable _resizePending 0
155    private variable _rotatePending 0
156    private variable _legendPending 0
157    private variable _fieldNames {}
158    private variable _fields
159    private variable _curFldName ""
160    private variable _curFldLabel ""
161    private variable _colorMode "scalar";#  Mode of colormap (vmag or scalar)
162}
163
164itk::usual VtkHeightmapViewer {
165    keep -background -foreground -cursor -font
166    keep -plotbackground -plotforeground -mode
167}
168
169# ----------------------------------------------------------------------
170# CONSTRUCTOR
171# ----------------------------------------------------------------------
172itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
173    set _serverType "vtkvis"
174
175    EnableWaitDialog 900
176    # Rebuild event
177    $_dispatcher register !rebuild
178    $_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
179
180    # Resize event
181    $_dispatcher register !resize
182    $_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
183
184    # Rotate event
185    $_dispatcher register !rotate
186    $_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
187
188    # Legend event
189    $_dispatcher register !legend
190    $_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
191
192    #
193    # Populate parser with commands handle incoming requests
194    #
195    $_parser alias image [itcl::code $this ReceiveImage]
196    $_parser alias dataset [itcl::code $this ReceiveDataset]
197    $_parser alias legend [itcl::code $this ReceiveLegend]
198
199    # Create image for legend colorbar.
200    set _image(legend) [image create photo]
201
202    # Initialize the view to some default parameters.
203    array set _view {
204        qw      0.36
205        qx      0.25
206        qy      0.50
207        qz      0.70
208        zoom    1.0
209        xpan    0
210        ypan    0
211        ortho   0
212    }
213    set _arcball [blt::arcball create 100 100]
214    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
215    $_arcball quaternion $q
216
217    array set _settings {
218        -axisflymode            "static"
219        -axislabels             1
220        -axisminorticks         1
221        -axisvisible            1
222        -colormap               BCGYR
223        -colormapdiscrete       0
224        -colormapvisible        1
225        -edges                  0
226        -field                  "Default"
227        -heightmapscale         50
228        -isheightmap            0
229        -isolinecolor           black
230        -isolinesvisible        1
231        -legendvisible          1
232        -lighting               1
233        -numisolines            10
234        -opacity                100
235        -outline                0
236        -savelighting           1
237        -saveopacity            100
238        -saveoutline            0
239        -stretchtofit           0
240        -wireframe              0
241        -xgrid                  0
242        -ygrid                  0
243        -zgrid                  0
244    }
245    array set _changed {
246        -colormap               0
247        -numisolines            0
248        -opacity                0
249    }
250    itk_component add view {
251        canvas $itk_component(plotarea).view \
252            -highlightthickness 0 -borderwidth 0
253    } {
254        usual
255        ignore -highlightthickness -borderwidth -background
256    }
257
258    itk_component add fieldmenu {
259        menu $itk_component(plotarea).menu \
260            -relief flat \
261            -tearoff no
262    } {
263        usual
264        ignore -background -foreground -relief -tearoff
265    }
266    set c $itk_component(view)
267    bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
268    bind $c <4> [itcl::code $this Zoom in 0.25]
269    bind $c <5> [itcl::code $this Zoom out 0.25]
270    bind $c <KeyPress-Left>  [list %W xview scroll 10 units]
271    bind $c <KeyPress-Right> [list %W xview scroll -10 units]
272    bind $c <KeyPress-Up>    [list %W yview scroll 10 units]
273    bind $c <KeyPress-Down>  [list %W yview scroll -10 units]
274    bind $c <Enter> "focus %W"
275    bind $c <Control-F1> [itcl::code $this ToggleConsole]
276
277    # Fix the scrollregion in case we go off screen
278    $c configure -scrollregion [$c bbox all]
279
280    set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
281    set _map(cwidth) -1
282    set _map(cheight) -1
283    set _map(zoom) 1.0
284    set _map(original) ""
285
286    set f [$itk_component(main) component controls]
287    itk_component add reset {
288        button $f.reset -borderwidth 1 -padx 1 -pady 1 \
289            -highlightthickness 0 \
290            -image [Rappture::icon reset-view] \
291            -command [itcl::code $this CameraReset]
292    } {
293        usual
294        ignore -highlightthickness
295    }
296    pack $itk_component(reset) -side top -padx 2 -pady { 2 0 }
297    Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
298
299    itk_component add zoomin {
300        button $f.zin -borderwidth 1 -padx 1 -pady 1 \
301            -highlightthickness 0 \
302            -image [Rappture::icon zoom-in] \
303            -command [itcl::code $this Zoom in]
304    } {
305        usual
306        ignore -highlightthickness
307    }
308    pack $itk_component(zoomin) -side top -padx 2 -pady { 2 0 }
309    Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
310
311    itk_component add zoomout {
312        button $f.zout -borderwidth 1 -padx 1 -pady 1 \
313            -highlightthickness 0 \
314            -image [Rappture::icon zoom-out] \
315            -command [itcl::code $this Zoom out]
316    } {
317        usual
318        ignore -highlightthickness
319    }
320    pack $itk_component(zoomout) -side top -padx 2 -pady { 2 0 }
321    Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
322
323    itk_component add mode {
324        Rappture::PushButton $f.mode \
325            -onimage [Rappture::icon surface] \
326            -offimage [Rappture::icon surface] \
327            -variable [itcl::scope _settings(-isheightmap)] \
328            -command [itcl::code $this AdjustSetting -isheightmap] \
329    }
330    Rappture::Tooltip::for $itk_component(mode) \
331        "Toggle the surface/contour on/off"
332    pack $itk_component(mode) -padx 2 -pady { 2 0 }
333
334    itk_component add stretchtofit {
335        Rappture::PushButton $f.stretchtofit \
336            -onimage [Rappture::icon stretchtofit] \
337            -offimage [Rappture::icon stretchtofit] \
338            -variable [itcl::scope _settings(-stretchtofit)] \
339            -command [itcl::code $this AdjustSetting -stretchtofit] \
340    }
341    Rappture::Tooltip::for $itk_component(stretchtofit) \
342        "Stretch plot to fit window on/off"
343    pack $itk_component(stretchtofit) -padx 2 -pady 2
344
345    if { [catch {
346        BuildContourTab
347        BuildAxisTab
348        BuildCameraTab
349    } errs] != 0 } {
350        global errorInfo
351        puts stderr "errs=$errs errorInfo=$errorInfo"
352    }
353
354    # Hack around the Tk panewindow.  The problem is that the requested
355    # size of the 3d view isn't set until an image is retrieved from
356    # the server.  So the panewindow uses the tiny size.
357    set w 10000
358    pack forget $itk_component(view)
359    blt::table $itk_component(plotarea) \
360        0,0 $itk_component(view) -fill both -reqwidth $w
361    blt::table configure $itk_component(plotarea) c1 -resize none
362
363    # Bindings for panning via mouse
364    bind $itk_component(view) <ButtonPress-2> \
365        [itcl::code $this Pan click %x %y]
366    bind $itk_component(view) <B2-Motion> \
367        [itcl::code $this Pan drag %x %y]
368    bind $itk_component(view) <ButtonRelease-2> \
369        [itcl::code $this Pan release %x %y]
370
371    #bind $itk_component(view) <ButtonRelease-3> \
372    #    [itcl::code $this Pick %x %y]
373
374    # Bindings for panning via keyboard
375    bind $itk_component(view) <KeyPress-Left> \
376        [itcl::code $this Pan set -10 0]
377    bind $itk_component(view) <KeyPress-Right> \
378        [itcl::code $this Pan set 10 0]
379    bind $itk_component(view) <KeyPress-Up> \
380        [itcl::code $this Pan set 0 -10]
381    bind $itk_component(view) <KeyPress-Down> \
382        [itcl::code $this Pan set 0 10]
383    bind $itk_component(view) <Shift-KeyPress-Left> \
384        [itcl::code $this Pan set -2 0]
385    bind $itk_component(view) <Shift-KeyPress-Right> \
386        [itcl::code $this Pan set 2 0]
387    bind $itk_component(view) <Shift-KeyPress-Up> \
388        [itcl::code $this Pan set 0 -2]
389    bind $itk_component(view) <Shift-KeyPress-Down> \
390        [itcl::code $this Pan set 0 2]
391
392    # Bindings for zoom via keyboard
393    bind $itk_component(view) <KeyPress-Prior> \
394        [itcl::code $this Zoom out]
395    bind $itk_component(view) <KeyPress-Next> \
396        [itcl::code $this Zoom in]
397
398    bind $itk_component(view) <Enter> "focus $itk_component(view)"
399
400    if {[string equal "x11" [tk windowingsystem]]} {
401        # Bindings for zoom via mouse
402        bind $itk_component(view) <4> [itcl::code $this Zoom out]
403        bind $itk_component(view) <5> [itcl::code $this Zoom in]
404    }
405
406    set _image(download) [image create photo]
407    eval itk_initialize $args
408    Connect
409    set _beforeConnect 0
410}
411
412# ----------------------------------------------------------------------
413# DESTRUCTOR
414# ----------------------------------------------------------------------
415itcl::body Rappture::VtkHeightmapViewer::destructor {} {
416    Disconnect
417    image delete $_image(plot)
418    image delete $_image(download)
419    catch { blt::arcball destroy $_arcball }
420}
421
422itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
423    if { $_width < 2 } {
424        set _width 500
425    }
426    if { $_height < 2 } {
427        set _height 500
428    }
429    set _start [clock clicks -milliseconds]
430    SendCmd "screen size [expr $_width - 20] $_height"
431
432    set font "Arial 8"
433    set lh [font metrics $font -linespace]
434    set h [expr {$_height - 2 * ($lh + 2)}]
435    if { $h != $_legendHeight } {
436        EventuallyRequestLegend
437    } else {
438        DrawLegend
439    }
440    set _resizePending 0
441}
442
443itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
444    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
445    SendCmd "camera orient $q"
446    set _rotatePending 0
447}
448
449itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
450    if { !$_legendPending } {
451        set _legendPending 1
452        $_dispatcher event -idle !legend
453    }
454}
455
456itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
457    set _width $w
458    set _height $h
459    $_arcball resize $w $h
460    if { !$_resizePending } {
461        set _resizePending 1
462        $_dispatcher event -after 250 !resize
463    }
464}
465
466set rotate_delay 100
467
468itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
469    foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
470    if { !$_rotatePending } {
471        set _rotatePending 1
472        global rotate_delay
473        $_dispatcher event -after $rotate_delay !rotate
474    }
475}
476
477# ----------------------------------------------------------------------
478# USAGE: add <dataobj> ?<settings>?
479#
480# Clients use this to add a data object to the plot.  The optional
481# <settings> are used to configure the plot.  Allowed settings are
482# -color, -brightness, -width, -linestyle, and -raise.
483# ----------------------------------------------------------------------
484itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
485    if { ![$dataobj isvalid] } {
486        return;                         # Object doesn't contain valid data.
487    }
488    array set params {
489        -color auto
490        -width 1
491        -linestyle solid
492        -brightness 0
493        -raise 0
494        -description ""
495        -param ""
496        -type ""
497    }
498    array set params $settings
499    set params(-description) ""
500    set params(-param) ""
501    array set params $settings
502
503    if {$params(-color) == "auto" || $params(-color) == "autoreset"} {
504        # can't handle -autocolors yet
505        set params(-color) white
506    }
507    set pos [lsearch -exact $_dlist $dataobj]
508    if {$pos < 0} {
509        lappend _dlist $dataobj
510    }
511    set _obj2ovride($dataobj-color) $params(-color)
512    set _obj2ovride($dataobj-width) $params(-width)
513    set _obj2ovride($dataobj-raise) $params(-raise)
514    $_dispatcher event -idle !rebuild
515}
516
517
518# ----------------------------------------------------------------------
519# USAGE: delete ?<dataobj1> <dataobj2> ...?
520#
521#       Clients use this to delete a dataobj from the plot.  If no dataobjs
522#       are specified, then all dataobjs are deleted.  No data objects are
523#       deleted.  They are only removed from the display list.
524#
525# ----------------------------------------------------------------------
526itcl::body Rappture::VtkHeightmapViewer::delete {args} {
527    if { [llength $args] == 0} {
528        set args $_dlist
529    }
530    # Delete all specified dataobjs
531    set changed 0
532    foreach dataobj $args {
533        set pos [lsearch -exact $_dlist $dataobj]
534        if { $pos < 0 } {
535            continue;                   # Don't know anything about it.
536        }
537        # Remove it from the dataobj list.
538        set _dlist [lreplace $_dlist $pos $pos]
539        array unset _obj2ovride $dataobj-*
540        array unset _settings $dataobj-*
541        set changed 1
542    }
543    # If anything changed, then rebuild the plot
544    if { $changed } {
545        $_dispatcher event -idle !rebuild
546    }
547}
548
549# ----------------------------------------------------------------------
550# USAGE: get ?-objects?
551# USAGE: get ?-visible?
552# USAGE: get ?-image view?
553#
554# Clients use this to query the list of objects being plotted, in
555# order from bottom to top of this result.  The optional "-image"
556# flag can also request the internal images being shown.
557# ----------------------------------------------------------------------
558itcl::body Rappture::VtkHeightmapViewer::get {args} {
559    if {[llength $args] == 0} {
560        set args "-objects"
561    }
562    set op [lindex $args 0]
563    switch -- $op {
564        "-objects" {
565            # put the dataobj list in order according to -raise options
566            set dlist {}
567            foreach dataobj $_dlist {
568                if { ![IsValidObject $dataobj] } {
569                    continue
570                }
571                if {[info exists _obj2ovride($dataobj-raise)] &&
572                    $_obj2ovride($dataobj-raise)} {
573                    set dlist [linsert $dlist 0 $dataobj]
574                } else {
575                    lappend dlist $dataobj
576                }
577            }
578            return $dlist
579        }
580        "-visible" {
581            set dlist {}
582            foreach dataobj $_dlist {
583                if { ![IsValidObject $dataobj] } {
584                    continue
585                }
586                if { ![info exists _obj2ovride($dataobj-raise)] } {
587                    # No setting indicates that the object isn't visible.
588                    continue
589                }
590                # Otherwise use the -raise parameter to put the object to
591                # the front of the list.
592                if { $_obj2ovride($dataobj-raise) } {
593                    set dlist [linsert $dlist 0 $dataobj]
594                } else {
595                    lappend dlist $dataobj
596                }
597            }
598            return $dlist
599        }           
600        -image {
601            if {[llength $args] != 2} {
602                error "wrong # args: should be \"get -image view\""
603            }
604            switch -- [lindex $args end] {
605                view {
606                    return $_image(plot)
607                }
608                default {
609                    error "bad image name \"[lindex $args end]\": should be view"
610                }
611            }
612        }
613        default {
614            error "bad option \"$op\": should be -objects or -image"
615        }
616    }
617}
618
619#
620# scale  --
621#
622#       This gets called either incrementally as new simulations are
623#       added or all at once as a sequence of heightmaps.
624#       This  accounts for all objects--even those not showing on the
625#       screen.  Because of this, the limits are appropriate for all
626#       objects as the user scans through data in the ResultSet viewer.
627#
628itcl::body Rappture::VtkHeightmapViewer::scale {args} {
629    foreach dataobj $args {
630        if { ![$dataobj isvalid] } {
631            continue;                   # Object doesn't contain valid data.
632        }
633        foreach axis { x y } {
634            set lim [$dataobj limits $axis]
635            if { ![info exists _limits($axis)] } {
636                set _limits($axis) $lim
637                continue
638            }
639            foreach {min max} $lim break
640            foreach {amin amax} $_limits($axis) break
641            if { $amin > $min } {
642                set amin $min
643            }
644            if { $amax < $max } {
645                set amax $max
646            }
647            set _limits($axis) [list $amin $amax]
648            set units [$dataobj hints ${axis}units]
649            set found($units) 1
650        }
651        foreach { fname lim } [$dataobj fieldlimits] {
652            if { ![info exists _limits($fname)] } {
653                set _limits($fname) $lim
654                continue
655            }
656            foreach {min max} $lim break
657            foreach {fmin fmax} $_limits($fname) break
658            if { $fmin > $min } {
659                set fmin $min
660            }
661            if { $fmax < $max } {
662                set fmax $max
663            }
664            set _limits($fname) [list $fmin $fmax]
665        }
666    }
667    if { [array size found] > 1 } {
668        set _settings(-stretchtofit) 1
669    } else {
670        # Check if the range of the x and y axes requires that we stretch
671        # the contour to fit the plotting area.  This can happen when the
672        # x and y scales differ greatly (> 100x)
673        foreach {xmin xmax} $_limits(x) break
674        foreach {ymin ymax} $_limits(y) break
675        if { (($xmax - $xmin) > (($ymax -$ymin) * $_maxScale)) ||
676             ((($xmax - $xmin) * $_maxScale) < ($ymax -$ymin)) } {
677            set _settings(-stretchtofit) 1
678        }
679    }
680}
681
682# ----------------------------------------------------------------------
683# USAGE: download coming
684# USAGE: download controls <downloadCommand>
685# USAGE: download now
686#
687# Clients use this method to create a downloadable representation
688# of the plot.  Returns a list of the form {ext string}, where
689# "ext" is the file extension (indicating the type of data) and
690# "string" is the data itself.
691# ----------------------------------------------------------------------
692itcl::body Rappture::VtkHeightmapViewer::download {option args} {
693    switch $option {
694        coming {
695            if {[catch {
696                blt::winop snap $itk_component(plotarea) $_image(download)
697            }]} {
698                $_image(download) configure -width 1 -height 1
699                $_image(download) put #000000
700            }
701        }
702        controls {
703            set popup .vtkviewerdownload
704            if { ![winfo exists .vtkviewerdownload] } {
705                set inner [BuildDownloadPopup $popup [lindex $args 0]]
706            } else {
707                set inner [$popup component inner]
708            }
709            set _downloadPopup(image_controls) $inner.image_frame
710            set num [llength [get]]
711            set num [expr {($num == 1) ? "1 result" : "$num results"}]
712            set word [Rappture::filexfer::label downloadWord]
713            $inner.summary configure -text "$word $num in the following format:"
714            update idletasks            ;# Fix initial sizes
715            return $popup
716        }
717        now {
718            set popup .vtkviewerdownload
719            if {[winfo exists .vtkviewerdownload]} {
720                $popup deactivate
721            }
722            switch -- $_downloadPopup(format) {
723                "image" {
724                    return [$this GetImage [lindex $args 0]]
725                }
726                "vtk" {
727                    return [$this GetVtkData [lindex $args 0]]
728                }
729            }
730            return ""
731        }
732        default {
733            error "bad option \"$option\": should be coming, controls, now"
734        }
735    }
736}
737
738# ----------------------------------------------------------------------
739# USAGE: Connect ?<host:port>,<host:port>...?
740#
741# Clients use this method to establish a connection to a new
742# server, or to reestablish a connection to the previous server.
743# Any existing connection is automatically closed.
744# ----------------------------------------------------------------------
745itcl::body Rappture::VtkHeightmapViewer::Connect {} {
746    global readyForNextFrame
747    set readyForNextFrame 1
748    set _reset 1
749    set _hosts [GetServerList "vtkvis"]
750    if { "" == $_hosts } {
751        return 0
752    }
753    set result [VisViewer::Connect $_hosts]
754    if { $result } {
755        if { $_reportClientInfo }  {
756            # Tell the server the viewer, hub, user and session.
757            # Do this immediately on connect before buffering any commands
758            global env
759
760            set info {}
761            set user "???"
762            if { [info exists env(USER)] } {
763                set user $env(USER)
764            }
765            set session "???"
766            if { [info exists env(SESSION)] } {
767                set session $env(SESSION)
768            }
769            lappend info "hub" [exec hostname]
770            lappend info "client" "vtkheightmapviewer"
771            lappend info "user" $user
772            lappend info "session" $session
773            SendCmd "clientinfo [list $info]"
774        }
775        set w [winfo width $itk_component(view)]
776        set h [winfo height $itk_component(view)]
777        EventuallyResize $w $h
778    }
779    return $result
780}
781
782#
783# isconnected --
784#
785#       Indicates if we are currently connected to the visualization server.
786#
787itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
788    return [VisViewer::IsConnected]
789}
790
791#
792# disconnect --
793#
794itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
795    Disconnect
796    set _reset 1
797}
798
799#
800# Disconnect --
801#
802#       Clients use this method to disconnect from the current rendering
803#       server.
804#
805itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
806    VisViewer::Disconnect
807
808    $_dispatcher cancel !rebuild
809    $_dispatcher cancel !resize
810    $_dispatcher cancel !rotate
811    $_dispatcher cancel !legend
812    # disconnected -- no more data sitting on server
813    array unset _datasets
814    array unset _data
815    array unset _colormaps
816    array unset _obj2datasets
817    global readyForNextFrame
818    set readyForNextFrame 1
819}
820
821# ----------------------------------------------------------------------
822# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
823#
824# Invoked automatically whenever the "image" command comes in from
825# the rendering server.  Indicates that binary image data with the
826# specified <size> will follow.
827# ----------------------------------------------------------------------
828itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
829    global readyForNextFrame
830    set readyForNextFrame 1
831    array set info {
832        -token "???"
833        -bytes 0
834        -type image
835    }
836    array set info $args
837    set bytes [ReceiveBytes $info(-bytes)]
838    if { $info(-type) == "image" } {
839        if 0 {
840            set f [open "last.ppm" "w"]
841            puts $f $bytes
842            close $f
843        }
844        $_image(plot) configure -data $bytes
845        set time [clock seconds]
846        set date [clock format $time]
847        #puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"       
848        if { $_start > 0 } {
849            set finish [clock clicks -milliseconds]
850            #puts stderr "round trip time [expr $finish -$_start] milliseconds"
851            set _start 0
852        }
853    } elseif { $info(type) == "print" } {
854        set tag $this-print-$info(-token)
855        set _hardcopy($tag) $bytes
856    }
857}
858
859#
860# ReceiveDataset --
861#
862itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
863    if { ![isconnected] } {
864        return
865    }
866    set option [lindex $args 0]
867    switch -- $option {
868        "scalar" {
869            set option [lindex $args 1]
870            switch -- $option {
871                "world" {
872                    foreach { x y z value tag } [lrange $args 2 end] break
873                }
874                "pixel" {
875                    foreach { x y value tag } [lrange $args 2 end] break
876                }
877            }
878        }
879        "vector" {
880            set option [lindex $args 1]
881            switch -- $option {
882                "world" {
883                    foreach { x y z vx vy vz tag } [lrange $args 2 end] break
884                }
885                "pixel" {
886                    foreach { x y vx vy vz tag } [lrange $args 2 end] break
887                }
888            }
889        }
890        "names" {
891            foreach { name } [lindex $args 1] {
892                #puts stderr "Dataset: $name"
893            }
894        }
895        default {
896            error "unknown dataset option \"$option\" from server"
897        }
898    }
899}
900
901# ----------------------------------------------------------------------
902# USAGE: Rebuild
903#
904# Called automatically whenever something changes that affects the
905# data in the widget.  Clears any existing data and rebuilds the
906# widget to display new data.
907# ----------------------------------------------------------------------
908itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
909    set w [winfo width $itk_component(view)]
910    set h [winfo height $itk_component(view)]
911    if { $w < 2 || $h < 2 } {
912        $_dispatcher event -idle !rebuild
913        return
914    }
915
916    # Turn on buffering of commands to the server.  We don't want to
917    # be preempted by a server disconnect/reconnect (which automatically
918    # generates a new call to Rebuild).   
919    StartBufferingCommands
920
921    if { $_width != $w || $_height != $h || $_reset } {
922        set _width $w
923        set _height $h
924        $_arcball resize $w $h
925        DoResize
926        if { $_settings(-stretchtofit) } {
927            AdjustSetting -stretchtofit
928        }
929    }
930    if { $_reset } {
931        #
932        # Reset the camera and other view parameters
933        #
934        InitSettings -isheightmap -background
935
936        # Let's see how this goes.  I think it's preferable to overloading the
937        # axis title with the exponent.
938        SendCmd "axis exp 0 0 0 1"
939
940        SendCmd "axis lrot z 90"
941        set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
942        $_arcball quaternion $q
943        if {$_settings(-isheightmap) } {
944            if { $_view(ortho)} {
945                SendCmd "camera mode ortho"
946            } else {
947                SendCmd "camera mode persp"
948            }
949            DoRotate
950            SendCmd "camera reset"
951        }
952        PanCamera
953        StopBufferingCommands
954        SendCmd "imgflush"
955        StartBufferingCommands
956    }
957
958    set _first ""
959    # Start off with no datasets are visible.
960    SendCmd "dataset visible 0"
961    set scale [GetHeightmapScale]
962    foreach dataobj [get -objects] {
963        if { [info exists _obj2ovride($dataobj-raise)] &&  $_first == "" } {
964            set _first $dataobj
965        }
966        set _obj2datasets($dataobj) ""
967        foreach comp [$dataobj components] {
968            set tag $dataobj-$comp
969            if { ![info exists _datasets($tag)] } {
970                set bytes [$dataobj vtkdata $comp]
971                if 0 {
972                    set f [open /tmp/vtkheightmap.vtk "w"]
973                    puts $f $bytes
974                    close $f
975                }
976                set length [string length $bytes]
977                if { $_reportClientInfo }  {
978                    set info {}
979                    lappend info "tool_id"       [$dataobj hints toolId]
980                    lappend info "tool_name"     [$dataobj hints toolName]
981                    lappend info "tool_version"  [$dataobj hints toolRevision]
982                    lappend info "tool_title"    [$dataobj hints toolTitle]
983                    lappend info "dataset_label" [$dataobj hints label]
984                    lappend info "dataset_size"  $length
985                    lappend info "dataset_tag"   $tag
986                    SendCmd [list "clientinfo" $info]
987                }
988                SendCmd "dataset add $tag data follows $length"
989                append _outbuf $bytes
990                set _datasets($tag) 1
991                SetObjectStyle $dataobj $comp
992            }
993            lappend _obj2datasets($dataobj) $tag
994            if { [info exists _obj2ovride($dataobj-raise)] } {
995                # Setting dataset visible enables outline
996                # and heightmap
997                SendCmd "dataset visible 1 $tag"
998            }
999            if { ![info exists _comp2scale($tag)] ||
1000                 $_comp2scale($tag) != $scale } {
1001                SendCmd "heightmap heightscale $scale $tag"
1002                set _comp2scale($tag) $scale
1003            }
1004        }
1005    }
1006    if { $_first != ""  } {
1007        $itk_component(field) choices delete 0 end
1008        $itk_component(fieldmenu) delete 0 end
1009        array unset _fields
1010        set _curFldName ""
1011        foreach cname [$_first components] {
1012            foreach fname [$_first fieldnames $cname] {
1013                if { [info exists _fields($fname)] } {
1014                    continue
1015                }
1016                foreach { label units components } \
1017                    [$_first fieldinfo $fname] break
1018                $itk_component(field) choices insert end "$fname" "$label"
1019                $itk_component(fieldmenu) add radiobutton -label "$label" \
1020                    -value $label -variable [itcl::scope _curFldLabel] \
1021                    -selectcolor red \
1022                    -activebackground $itk_option(-plotbackground) \
1023                    -activeforeground $itk_option(-plotforeground) \
1024                    -font "Arial 8" \
1025                    -command [itcl::code $this Combo invoke]
1026                set _fields($fname) [list $label $units $components]
1027                if { $_curFldName == "" } {
1028                    set _curFldName $fname
1029                    set _curFldLabel $label
1030                }
1031            }
1032        }
1033        $itk_component(field) value $_curFldLabel
1034    }
1035    InitSettings -stretchtofit -outline
1036
1037    if { $_reset } {
1038        SendCmd "axis tickpos outside"
1039        foreach axis { x y z } {
1040            SendCmd "axis lformat $axis %g"
1041        }
1042       
1043        foreach axis { x y z } {
1044            if { $axis == "z" } {
1045                set label [$_first hints label]
1046            } else {
1047                set label [$_first hints ${axis}label]
1048            }
1049            if { $label == "" } {
1050                if {$axis == "z"} {
1051                    if { [string match "component*" $_curFldName] } {
1052                        set label [string toupper $axis]
1053                    } else {
1054                        set label $_curFldLabel
1055                    }
1056                } else {
1057                    set label [string toupper $axis]
1058                }
1059            }
1060            # May be a space in the axis label.
1061            SendCmd [list axis name $axis $label]
1062
1063            if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1064                set units [lindex $_fields($_curFldName) 1]
1065            } else {
1066                set units [$_first hints ${axis}units]
1067            }
1068            if { $units != "" } {
1069                # May be a space in the axis units.
1070                SendCmd [list axis units $axis $units]
1071            }
1072        }
1073        #
1074        # Reset the camera and other view parameters
1075        #
1076        ResetAxes
1077        set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1078        $_arcball quaternion $q
1079        if {$_settings(-isheightmap) } {
1080            if { $_view(ortho)} {
1081                SendCmd "camera mode ortho"
1082            } else {
1083                SendCmd "camera mode persp"
1084            }
1085            DoRotate
1086            SendCmd "camera reset"
1087        }
1088        PanCamera
1089        InitSettings -xgrid -ygrid -zgrid \
1090            -axisvisible -axislabels -heightmapscale -field -isheightmap \
1091            -numisolines
1092        if { [array size _fields] < 2 } {
1093            blt::table forget $itk_component(field) $itk_component(field_l)
1094        }
1095        RequestLegend
1096        set _reset 0
1097    }
1098    global readyForNextFrame
1099    set readyForNextFrame 0;            # Don't advance to the next frame
1100
1101    # Actually write the commands to the server socket.  If it fails, we don't
1102    # care.  We're finished here.
1103    blt::busy hold $itk_component(hull)
1104    StopBufferingCommands
1105    blt::busy release $itk_component(hull)
1106}
1107
1108# ----------------------------------------------------------------------
1109# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1110#
1111# Returns a list of server IDs for the current datasets being displayed.  This
1112# is normally a single ID, but it might be a list of IDs if the current data
1113# object has multiple components.
1114# ----------------------------------------------------------------------
1115itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1116    set flag [lindex $args 0]
1117    switch -- $flag {
1118        "-all" {
1119            if { [llength $args] > 1 } {
1120                error "CurrentDatasets: can't specify dataobj after \"-all\""
1121            }
1122            set dlist [get -objects]
1123        }
1124        "-visible" {
1125            if { [llength $args] > 1 } {
1126                set dlist {}
1127                set args [lrange $args 1 end]
1128                foreach dataobj $args {
1129                    if { [info exists _obj2ovride($dataobj-raise)] } {
1130                        lappend dlist $dataobj
1131                    }
1132                }
1133            } else {
1134                set dlist [get -visible]
1135            }
1136        }           
1137        default {
1138            set dlist $args
1139        }
1140    }
1141    set rlist ""
1142    foreach dataobj $dlist {
1143        foreach comp [$dataobj components] {
1144            set tag $dataobj-$comp
1145            if { [info exists _datasets($tag)] && $_datasets($tag) } {
1146                lappend rlist $tag
1147            }
1148        }
1149    }
1150    return $rlist
1151}
1152
1153itcl::body Rappture::VtkHeightmapViewer::CameraReset {} {
1154    array set _view {
1155        qw      0.36
1156        qx      0.25
1157        qy      0.50
1158        qz      0.70
1159        zoom    1.0
1160        xpan    0
1161        ypan    0
1162    }
1163    if { $_first != "" } {
1164        set location [$_first hints camera]
1165        if { $location != "" } {
1166            array set _view $location
1167        }
1168    }
1169    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1170    $_arcball quaternion $q
1171    if {$_settings(-isheightmap) } {
1172        DoRotate
1173    }
1174    SendCmd "camera reset"
1175}
1176
1177# ----------------------------------------------------------------------
1178# USAGE: Zoom in
1179# USAGE: Zoom out
1180# USAGE: Zoom reset
1181#
1182# Called automatically when the user clicks on one of the zoom
1183# controls for this widget.  Changes the zoom for the current view.
1184# ----------------------------------------------------------------------
1185itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1186    switch -- $option {
1187        "in" {
1188            set _view(zoom) [expr {$_view(zoom)*1.25}]
1189            SendCmd "camera zoom $_view(zoom)"
1190        }
1191        "out" {
1192            set _view(zoom) [expr {$_view(zoom)*0.8}]
1193            SendCmd "camera zoom $_view(zoom)"
1194        }
1195        "reset" {
1196            array set _view {
1197                zoom    1.0
1198                xpan    0
1199                ypan    0
1200            }
1201            SendCmd "camera reset"
1202        }
1203    }
1204}
1205
1206itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1207    set x $_view(xpan)
1208    set y $_view(ypan)
1209    SendCmd "camera pan $x $y"
1210}
1211
1212
1213# ----------------------------------------------------------------------
1214# USAGE: Rotate click <x> <y>
1215# USAGE: Rotate drag <x> <y>
1216# USAGE: Rotate release <x> <y>
1217#
1218# Called automatically when the user clicks/drags/releases in the
1219# plot area.  Moves the plot according to the user's actions.
1220# ----------------------------------------------------------------------
1221itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1222    switch -- $option {
1223        "click" {
1224            $itk_component(view) configure -cursor fleur
1225            set _click(x) $x
1226            set _click(y) $y
1227        }
1228        "drag" {
1229            if {[array size _click] == 0} {
1230                Rotate click $x $y
1231            } else {
1232                set w [winfo width $itk_component(view)]
1233                set h [winfo height $itk_component(view)]
1234                if {$w <= 0 || $h <= 0} {
1235                    return
1236                }
1237
1238                if {[catch {
1239                    # this fails sometimes for no apparent reason
1240                    set dx [expr {double($x-$_click(x))/$w}]
1241                    set dy [expr {double($y-$_click(y))/$h}]
1242                }]} {
1243                    return
1244                }
1245                if { $dx == 0 && $dy == 0 } {
1246                    return
1247                }
1248                set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1249                EventuallyRotate $q
1250                set _click(x) $x
1251                set _click(y) $y
1252            }
1253        }
1254        "release" {
1255            Rotate drag $x $y
1256            $itk_component(view) configure -cursor ""
1257            catch {unset _click}
1258        }
1259        default {
1260            error "bad option \"$option\": should be click, drag, release"
1261        }
1262    }
1263}
1264
1265itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1266    foreach tag [CurrentDatasets -visible] {
1267        SendCmd "dataset getscalar pixel $x $y $tag"
1268    }
1269}
1270
1271# ----------------------------------------------------------------------
1272# USAGE: $this Pan click x y
1273#        $this Pan drag x y
1274#        $this Pan release x y
1275#
1276# Called automatically when the user clicks on one of the zoom
1277# controls for this widget.  Changes the zoom for the current view.
1278# ----------------------------------------------------------------------
1279itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1280    switch -- $option {
1281        "set" {
1282            set w [winfo width $itk_component(view)]
1283            set h [winfo height $itk_component(view)]
1284            set x [expr $x / double($w)]
1285            set y [expr $y / double($h)]
1286            set _view(xpan) [expr $_view(xpan) + $x]
1287            set _view(ypan) [expr $_view(ypan) + $y]
1288            PanCamera
1289            return
1290        }
1291        "click" {
1292            set _click(x) $x
1293            set _click(y) $y
1294            $itk_component(view) configure -cursor hand1
1295        }
1296        "drag" {
1297            if { ![info exists _click(x)] } {
1298                set _click(x) $x
1299            }
1300            if { ![info exists _click(y)] } {
1301                set _click(y) $y
1302            }
1303            set w [winfo width $itk_component(view)]
1304            set h [winfo height $itk_component(view)]
1305            set dx [expr ($_click(x) - $x)/double($w)]
1306            set dy [expr ($_click(y) - $y)/double($h)]
1307            set _click(x) $x
1308            set _click(y) $y
1309            set _view(xpan) [expr $_view(xpan) - $dx]
1310            set _view(ypan) [expr $_view(ypan) - $dy]
1311            PanCamera
1312        }
1313        "release" {
1314            Pan drag $x $y
1315            $itk_component(view) configure -cursor ""
1316        }
1317        default {
1318            error "unknown option \"$option\": should set, click, drag, or release"
1319        }
1320    }
1321}
1322
1323# ----------------------------------------------------------------------
1324# USAGE: InitSettings <what> ?<value>?
1325#
1326# Used internally to update rendering settings whenever parameters
1327# change in the popup settings panel.  Sends the new settings off
1328# to the back end.
1329# ----------------------------------------------------------------------
1330itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1331    foreach spec $args {
1332        if { [info exists _settings($_first${spec})] } {
1333            # Reset global setting with dataobj specific setting
1334            set _settings($spec) $_settings($_first${spec})
1335        }
1336        AdjustSetting $spec
1337    }
1338}
1339
1340#
1341# AdjustSetting --
1342#
1343#       Changes/updates a specific setting in the widget.  There are
1344#       usually user-setable option.  Commands are sent to the render
1345#       server.
1346#
1347itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1348    if { $_beforeConnect } {
1349        return
1350    }
1351    switch -- $what {
1352        "-axisflymode" {
1353            set mode [$itk_component(axisflymode) value]
1354            set mode [$itk_component(axisflymode) translate $mode]
1355            set _settings($what) $mode
1356            SendCmd "axis flymode $mode"
1357        }
1358        "-axislabels" {
1359            set bool $_settings($what)
1360            SendCmd "axis labels all $bool"
1361        }
1362        "-axisminorticks" {
1363            set bool $_settings($what)
1364            foreach axis { x y z } {
1365                SendCmd "axis minticks ${axis} $bool"
1366            }
1367        }
1368        "-axisvisible" {
1369            set bool $_settings($what)
1370            SendCmd "axis visible all $bool"
1371        }
1372        "-xgrid" - "-ygrid" - "-zgrid" {
1373            set axis [string tolower [string range $what 1 1]]
1374            set bool $_settings($what)
1375            SendCmd "axis grid $axis $bool"
1376        }
1377        "-background" {
1378            set bg [$itk_component(background) value]
1379            array set fgcolors {
1380                "black" "white"
1381                "white" "black"
1382                "grey"  "black"
1383            }
1384            set fg $fgcolors($bg)
1385            configure -plotbackground $bg -plotforeground $fg
1386            $itk_component(view) delete "legend"
1387            SendCmd "screen bgcolor [Color2RGB $bg]"
1388            SendCmd "outline color [Color2RGB $fg]"
1389            SendCmd "axis color all [Color2RGB $fg]"
1390            DrawLegend
1391        }
1392        "-colormap" {
1393            set _changed($what) 1
1394            StartBufferingCommands
1395            set color [$itk_component(colormap) value]
1396            set _settings($what) $color
1397            if { $color == "none" } {
1398                if { $_settings(-colormapvisible) } {
1399                    SendCmd "heightmap surface 0"
1400                    set _settings(-colormapvisible) 0
1401                }
1402            } else {
1403                if { !$_settings(-colormapvisible) } {
1404                    SendCmd "heightmap surface 1"
1405                    set _settings(-colormapvisible) 1
1406                }
1407                SetCurrentColormap $color
1408                if {$_settings(-colormapdiscrete)} {
1409                    set numColors [expr $_settings(-numisolines) + 1]
1410                    SendCmd "colormap res $numColors $color"
1411                }
1412            }
1413            StopBufferingCommands
1414            EventuallyRequestLegend
1415        }
1416        "-colormapvisible" {
1417            set bool $_settings($what)
1418            SendCmd "heightmap surface $bool"
1419        }
1420        "-colormapdiscrete" {
1421            set bool $_settings($what)
1422            set numColors [expr $_settings(-numisolines) + 1]
1423            StartBufferingCommands
1424            if {$bool} {
1425                SendCmd "colormap res $numColors"
1426                # Discrete colormap requires preinterp on
1427                SendCmd "heightmap preinterp on"
1428            } else {
1429                SendCmd "colormap res default"
1430                # FIXME: add setting for preinterp (default on)
1431                SendCmd "heightmap preinterp on"
1432            }
1433            StopBufferingCommands
1434            EventuallyRequestLegend
1435        }
1436        "-edges" {
1437            set bool $_settings($what)
1438            SendCmd "heightmap edges $bool"
1439        }
1440        "-field" {
1441            set label [$itk_component(field) value]
1442            set fname [$itk_component(field) translate $label]
1443            set _settings($what) $fname
1444            if { [info exists _fields($fname)] } {
1445                foreach { label units components } $_fields($fname) break
1446                if { $components > 1 } {
1447                    set _colorMode vmag
1448                } else {
1449                    set _colorMode scalar
1450                }
1451                set _curFldName $fname
1452                set _curFldLabel $label
1453            } else {
1454                puts stderr "unknown field \"$fname\""
1455                return
1456            }
1457            set label [$_first hints label]
1458            if { $label == "" } {
1459                if { [string match "component*" $_curFldName] } {
1460                    set label Z
1461                } else {
1462                    set label $_curFldLabel
1463                }
1464            }
1465            # May be a space in the axis label.
1466            SendCmd [list axis name z $label]
1467
1468            if { [$_first hints zunits] == "" } {
1469                set units [lindex $_fields($_curFldName) 1]
1470            } else {
1471                set units [$_first hints zunits]
1472            }
1473            if { $units != "" } {
1474                # May be a space in the axis units.
1475                SendCmd [list axis units z $units]
1476            }
1477            # Get the new limits because the field changed.
1478            ResetAxes
1479            SendCmd "dataset scalar $_curFldName"
1480            SendCmd "heightmap colormode scalar $_curFldName"
1481            Zoom reset
1482            UpdateContourList
1483            DrawLegend
1484        }
1485        "-heightmapscale" {
1486            if { $_settings(-isheightmap) } {
1487                set scale [GetHeightmapScale]
1488                # Have to set the datasets individually because we are
1489                # tracking them in _comp2scale.
1490                foreach dataset [CurrentDatasets -all] {
1491                    SendCmd "heightmap heightscale $scale $dataset"
1492                    set _comp2scale($dataset) $scale
1493                }
1494                ResetAxes
1495            }
1496        }
1497        "-isheightmap" {
1498            set bool $_settings($what)
1499            set c $itk_component(view)
1500            StartBufferingCommands
1501            # Fix heightmap scale: 0 for contours, 1 for heightmaps.
1502            if { $bool } {
1503                set _settings(-heightmapscale) 50
1504                set _settings(-opacity) $_settings(-saveopacity)
1505                set _settings(-lighting) $_settings(-savelighting)
1506                set _settings(-outline) 0
1507            } else {
1508                set _settings(-heightmapscale) 0
1509                set _settings(-lighting) 0
1510                set _settings(-opacity) 100
1511                set _settings(-outline)  $_settings(-saveoutline)
1512            }
1513            InitSettings -lighting -opacity -outline
1514            set scale [GetHeightmapScale]
1515            # Have to set the datasets individually because we are
1516            # tracking them in _comp2scale.
1517            foreach dataset [CurrentDatasets -all] {
1518                SendCmd "heightmap heightscale $scale $dataset"
1519                set _comp2scale($dataset) $scale
1520            }
1521            if { $bool } {
1522                $itk_component(lighting) configure -state normal
1523                $itk_component(opacity) configure -state normal
1524                $itk_component(scale) configure -state normal
1525                $itk_component(opacity_l) configure -state normal
1526                $itk_component(scale_l) configure -state normal
1527                $itk_component(outline) configure -state disabled
1528                if {$_view(ortho)} {
1529                    SendCmd "camera mode ortho"
1530                } else {
1531                    SendCmd "camera mode persp"
1532                }
1533            } else {
1534                $itk_component(lighting) configure -state disabled
1535                $itk_component(opacity) configure -state disabled
1536                $itk_component(scale) configure -state disabled
1537                $itk_component(opacity_l) configure -state disabled
1538                $itk_component(scale_l) configure -state disabled
1539                $itk_component(outline) configure -state normal
1540                SendCmd "camera mode image"
1541            }
1542            if {$_settings(-stretchtofit)} {
1543                if {$scale == 0} {
1544                    SendCmd "camera aspect window"
1545                } else {
1546                    SendCmd "camera aspect square"
1547                }
1548            }
1549            ResetAxes
1550            if { $bool } {
1551                set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1552                $_arcball quaternion $q
1553                SendCmd "camera orient $q"
1554            } else {
1555                bind $c <ButtonPress-1> {}
1556                bind $c <B1-Motion> {}
1557                bind $c <ButtonRelease-1> {}
1558            }
1559            Zoom reset
1560            # Fix the mouse bindings for rotation/panning and the
1561            # camera mode. Ideally we'd create a bindtag for these.
1562            if { $bool } {
1563                # Bindings for rotation via mouse
1564                bind $c <ButtonPress-1> \
1565                    [itcl::code $this Rotate click %x %y]
1566                bind $c <B1-Motion> \
1567                    [itcl::code $this Rotate drag %x %y]
1568                bind $c <ButtonRelease-1> \
1569                    [itcl::code $this Rotate release %x %y]
1570            }
1571            StopBufferingCommands
1572        }
1573        "-isolinecolor" {
1574            set color [$itk_component(isolinecolor) value]
1575            if { $color == "none" } {
1576                if { $_settings(-isolinesvisible) } {
1577                    SendCmd "heightmap isolines 0"
1578                    set _settings(-isolinesvisible) 0
1579                }
1580            } else {
1581                if { !$_settings(-isolinesvisible) } {
1582                    SendCmd "heightmap isolines 1"
1583                    set _settings(-isolinesvisible) 1
1584                }
1585                SendCmd "heightmap isolinecolor [Color2RGB $color]"
1586            }
1587            DrawLegend
1588        }
1589        "-isolinesvisible" {
1590            set bool $_settings($what)
1591            SendCmd "heightmap isolines $bool"
1592            DrawLegend
1593        }
1594        "-legendvisible" {
1595            if { !$_settings($what) } {
1596                $itk_component(view) delete legend
1597            }
1598            DrawLegend
1599        }
1600        "-lighting" {
1601            if { $_settings(-isheightmap) } {
1602                set _settings(-savelighting) $_settings($what)
1603                set bool $_settings($what)
1604                SendCmd "heightmap lighting $bool"
1605            } else {
1606                SendCmd "heightmap lighting 0"
1607            }
1608        }
1609        "-numisolines" {
1610            set _settings($what) [$itk_component(numisolines) value]
1611            set _currentNumIsolines $_settings($what)
1612            UpdateContourList
1613            set _changed($what) 1
1614            SendCmd "heightmap contourlist [list $_contourList]"
1615            if {$_settings(-colormapdiscrete)} {
1616                set numColors [expr $_settings($what) + 1]
1617                SendCmd "colormap res $numColors"
1618                EventuallyRequestLegend
1619            } else {
1620                DrawLegend
1621            }
1622        }
1623        "-opacity" {
1624            set _changed($what) 1
1625            set val [expr $_settings($what) * 0.01]
1626            if { $_settings(-isheightmap) } {
1627                set _settings(-saveopacity) $_settings($what)
1628                SendCmd "heightmap opacity $val"
1629            } else {
1630                SendCmd "heightmap opacity 1.0"
1631            }
1632        }
1633        "-outline" {
1634            if { $_settings(-isheightmap) } {
1635                SendCmd "outline visible 0"
1636            } else {
1637                set _settings(-saveoutline) $_settings($what)
1638                set bool $_settings($what)
1639                SendCmd "outline visible $bool"
1640            }
1641        }
1642        "-stretchtofit" {
1643            set bool $_settings($what)
1644            if { $bool } {
1645                set heightScale [GetHeightmapScale]
1646                if {$heightScale == 0} {
1647                    SendCmd "camera aspect window"
1648                } else {
1649                    SendCmd "camera aspect square"
1650                }
1651            } else {
1652                SendCmd "camera aspect native"
1653            }
1654            Zoom reset
1655        }
1656        "-wireframe" {
1657            set bool $_settings($what)
1658            SendCmd "heightmap wireframe $bool"
1659        }
1660        default {
1661            error "don't know how to fix $what"
1662        }
1663    }
1664}
1665
1666#
1667# RequestLegend --
1668#
1669#       Request a new legend from the server.  The size of the legend
1670#       is determined from the height of the canvas. 
1671#
1672# This should be called when
1673#       1.  A new current colormap is set.
1674#       2.  Window is resized.
1675#       3.  The limits of the data have changed.  (Just need a redraw).
1676#       4.  Number of isolines have changed. (Just need a redraw).
1677#       5.  Legend becomes visible (Just need a redraw).
1678#
1679itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1680    set _legendPending 0
1681    set font "Arial 8"
1682    set w 12
1683    set lineht [font metrics $font -linespace]
1684    # color ramp height = (canvas height) - (min and max value lines) - 2
1685    set h [expr {$_height - 2 * ($lineht + 2)}]
1686    set _legendHeight $h
1687
1688    set fname $_curFldName
1689    if { [string match "component*" $fname] } {
1690        set title ""
1691    } else {
1692        if { [info exists _fields($fname)] } {
1693            foreach { title units } $_fields($fname) break
1694            if { $units != "" } {
1695                set title [format "%s (%s)" $title $units]
1696            }
1697        } else {
1698            set title $fname
1699        }
1700    }
1701    # If there's a title too, substract one more line
1702    if { $title != "" } {
1703        incr h -$lineht
1704    }
1705    if { $h < 1 } {
1706        return
1707    }
1708    # Set the legend on the first heightmap dataset.
1709    if { $_currentColormap != ""  } {
1710        set cmap $_currentColormap
1711        SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1712    }
1713}
1714
1715#
1716# ResetAxes --
1717#
1718#       Set axis z bounds and range
1719#
1720itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1721    if { ![info exists _limits($_curFldName)]} {
1722        SendCmd "dataset maprange all"
1723        SendCmd "axis autorange z on"
1724        SendCmd "axis autobounds z on"
1725        return
1726    }
1727    foreach { xmin xmax } $_limits(x) break
1728    foreach { ymin ymax } $_limits(y) break
1729    foreach { vmin vmax } $_limits($_curFldName) break
1730
1731    global tcl_precision
1732    set tcl_precision 17
1733    set xr [expr $xmax - $xmin]
1734    set yr [expr $ymax - $ymin]
1735    set vr [expr $vmax - $vmin]
1736    set r  [expr ($yr > $xr) ? $yr : $xr]
1737    if { $vr < 1.0e-17 } {
1738        set dataScale 1.0
1739    } else {
1740        set dataScale [expr $r / $vr]
1741    }
1742    set heightScale [GetHeightmapScale]
1743    set bmin [expr $heightScale * $dataScale * $vmin]
1744    set bmax [expr $heightScale * $dataScale * $vmax]
1745    if {$heightScale > 0} {
1746        set zpos [expr - $bmin]
1747        SendCmd "heightmap pos 0 0 $zpos"
1748    } else {
1749        SendCmd "heightmap pos 0 0 0"
1750    }
1751    set bmax [expr $bmax - $bmin]
1752    set bmin 0
1753    SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1754    SendCmd "axis bounds z $bmin $bmax"
1755    SendCmd "axis range z $_limits($_curFldName)"
1756}
1757
1758#
1759# SetCurrentColormap --
1760#
1761itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1762    # Keep track of the colormaps that we build.
1763    if { $name != "none" && ![info exists _colormaps($name)] } {
1764        BuildColormap $name
1765        set _colormaps($name) 1
1766    }
1767    set _currentColormap $name
1768    SendCmd "heightmap colormap $_currentColormap"
1769}
1770
1771
1772#
1773# BuildColormap --
1774#
1775#       Build the designated colormap on the server.
1776#
1777itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1778    set cmap [ColorsToColormap $name]
1779    if { [llength $cmap] == 0 } {
1780        set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1781    }
1782    set wmap "0.0 1.0 1.0 1.0"
1783    SendCmd "colormap add $name { $cmap } { $wmap }"
1784}
1785
1786# ----------------------------------------------------------------------
1787# CONFIGURATION OPTION: -mode
1788# ----------------------------------------------------------------------
1789itcl::configbody Rappture::VtkHeightmapViewer::mode {
1790    switch -- $itk_option(-mode) {
1791        "heightmap" {
1792            set _settings(-isheightmap) 1
1793        }
1794        "contour" {
1795            set _settings(-isheightmap) 0
1796        }
1797        default {
1798            error "unknown mode settings \"$itk_option(-mode)\""
1799        }
1800    }
1801    if { !$_reset } {
1802        AdjustSetting -isheightmap
1803    }
1804}
1805
1806# ----------------------------------------------------------------------
1807# CONFIGURATION OPTION: -plotbackground
1808# ----------------------------------------------------------------------
1809itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1810    if { [isconnected] } {
1811        set rgb [Color2RGB $itk_option(-plotbackground)]
1812        if { !$_reset } {
1813            SendCmd "screen bgcolor $rgb"
1814        }
1815        $itk_component(view) configure -background $itk_option(-plotbackground)
1816    }
1817}
1818
1819# ----------------------------------------------------------------------
1820# CONFIGURATION OPTION: -plotforeground
1821# ----------------------------------------------------------------------
1822itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1823    if { [isconnected] } {
1824        set rgb [Color2RGB $itk_option(-plotforeground)]
1825        if { !$_reset } {
1826            SendCmd "outline color $rgb"
1827            SendCmd "axis color all $rgb"
1828        }
1829    }
1830}
1831
1832itcl::body Rappture::VtkHeightmapViewer::limits3 { dataobj } {
1833    lappend limits x [$dataobj limits x]
1834    lappend limits y [$dataobj limits y]
1835    if { [catch { $dataobj limits $_curFldName } vlim] != 0 } {
1836        set vlim [$dataobj limits v]
1837    }
1838    lappend limits v $vlim
1839    return $limits
1840}
1841
1842itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1843
1844    set fg [option get $itk_component(hull) font Font]
1845    #set bfg [option get $itk_component(hull) boldFont Font]
1846
1847    set inner [$itk_component(main) insert end \
1848        -title "Contour/Surface Settings" \
1849        -icon [Rappture::icon contour2]]
1850    $inner configure -borderwidth 4
1851
1852    checkbutton $inner.legend \
1853        -text "Legend" \
1854        -variable [itcl::scope _settings(-legendvisible)] \
1855        -command [itcl::code $this AdjustSetting -legendvisible] \
1856        -font "Arial 9"
1857
1858    checkbutton $inner.wireframe \
1859        -text "Wireframe" \
1860        -variable [itcl::scope _settings(-wireframe)] \
1861        -command [itcl::code $this AdjustSetting -wireframe] \
1862        -font "Arial 9"
1863
1864    itk_component add lighting {
1865        checkbutton $inner.lighting \
1866            -text "Enable Lighting" \
1867            -variable [itcl::scope _settings(-lighting)] \
1868            -command [itcl::code $this AdjustSetting -lighting] \
1869            -font "Arial 9"
1870    } {
1871        ignore -font
1872    }
1873    checkbutton $inner.edges \
1874        -text "Edges" \
1875        -variable [itcl::scope _settings(-edges)] \
1876        -command [itcl::code $this AdjustSetting -edges] \
1877        -font "Arial 9"
1878
1879    itk_component add outline {
1880        checkbutton $inner.outline \
1881            -text "Outline" \
1882            -variable [itcl::scope _settings(-outline)] \
1883            -command [itcl::code $this AdjustSetting -outline] \
1884            -font "Arial 9"
1885    } {
1886        ignore -font
1887    }
1888    checkbutton $inner.stretch \
1889        -text "Stretch to fit" \
1890        -variable [itcl::scope _settings(-stretchtofit)] \
1891        -command [itcl::code $this AdjustSetting -stretchtofit] \
1892        -font "Arial 9"
1893
1894    checkbutton $inner.isolines \
1895        -text "Isolines" \
1896        -variable [itcl::scope _settings(-isolinesvisible)] \
1897        -command [itcl::code $this AdjustSetting -isolinesvisible] \
1898        -font "Arial 9"
1899
1900    checkbutton $inner.colormapDiscrete \
1901        -text "Discrete Colormap" \
1902        -variable [itcl::scope _settings(-colormapdiscrete)] \
1903        -command [itcl::code $this AdjustSetting -colormapdiscrete] \
1904        -font "Arial 9"
1905
1906    itk_component add field_l {
1907        label $inner.field_l -text "Field" -font "Arial 9"
1908    } {
1909        ignore -font
1910    }
1911    itk_component add field {
1912        Rappture::Combobox $inner.field -width 10 -editable no
1913    }
1914    bind $inner.field <<Value>> \
1915        [itcl::code $this AdjustSetting -field]
1916
1917    label $inner.colormap_l -text "Colormap" -font "Arial 9"
1918    itk_component add colormap {
1919        Rappture::Combobox $inner.colormap -width 10 -editable no
1920    }
1921    $inner.colormap choices insert end [GetColormapList -includeNone]
1922    $itk_component(colormap) value $_settings(-colormap)
1923    bind $inner.colormap <<Value>> \
1924        [itcl::code $this AdjustSetting -colormap]
1925
1926    label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1927    itk_component add isolinecolor {
1928        Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1929    }
1930    $inner.isolinecolor choices insert end \
1931        "black"              "black"            \
1932        "blue"               "blue"             \
1933        "cyan"               "cyan"             \
1934        "green"              "green"            \
1935        "grey"               "grey"             \
1936        "magenta"            "magenta"          \
1937        "orange"             "orange"           \
1938        "red"                "red"              \
1939        "white"              "white"            \
1940        "none"               "none"
1941
1942    $itk_component(isolinecolor) value $_settings(-isolinecolor)
1943    bind $inner.isolinecolor <<Value>> \
1944        [itcl::code $this AdjustSetting -isolinecolor]
1945
1946    label $inner.background_l -text "Background Color" -font "Arial 9"
1947    itk_component add background {
1948        Rappture::Combobox $inner.background -width 10 -editable no
1949    }
1950    $inner.background choices insert end \
1951        "black"              "black"            \
1952        "white"              "white"            \
1953        "grey"               "grey"             
1954
1955    $itk_component(background) value "white"
1956    bind $inner.background <<Value>> \
1957        [itcl::code $this AdjustSetting -background]
1958
1959    itk_component add opacity_l {
1960        label $inner.opacity_l -text "Opacity" -font "Arial 9"
1961    } {
1962        ignore -font
1963    }
1964    itk_component add opacity {
1965        ::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1966            -variable [itcl::scope _settings(-opacity)] \
1967            -showvalue off \
1968            -command [itcl::code $this AdjustSetting -opacity]
1969    }
1970    itk_component add scale_l {
1971        label $inner.scale_l -text "Scale" -font "Arial 9"
1972    } {
1973        ignore -font
1974    }
1975    itk_component add scale {
1976        ::scale $inner.scale -from 0 -to 100 -orient horizontal \
1977            -variable [itcl::scope _settings(-heightmapscale)] \
1978            -showvalue off \
1979            -command [itcl::code $this AdjustSetting -heightmapscale]
1980    }
1981    label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1982    itk_component add numisolines {
1983        Rappture::Spinint $inner.numisolines \
1984            -min 0 -max 50 -font "arial 9"
1985    }
1986    $itk_component(numisolines) value $_settings(-numisolines)
1987    bind $itk_component(numisolines) <<Value>> \
1988        [itcl::code $this AdjustSetting -numisolines]
1989
1990    frame $inner.separator1 -height 2 -relief sunken -bd 1
1991    frame $inner.separator2 -height 2 -relief sunken -bd 1
1992
1993    blt::table $inner \
1994        0,0 $inner.field_l -anchor w -pady 2 \
1995        0,1 $inner.field -anchor w -pady 2 -fill x \
1996        1,0 $inner.colormap_l -anchor w -pady 2  \
1997        1,1 $inner.colormap   -anchor w -pady 2 -fill x  \
1998        2,0 $inner.isolinecolor_l  -anchor w -pady 2  \
1999        2,1 $inner.isolinecolor    -anchor w -pady 2 -fill x  \
2000        3,0 $inner.background_l -anchor w -pady 2 \
2001        3,1 $inner.background -anchor w -pady 2  -fill x \
2002        4,0 $inner.numisolines_l -anchor w -pady 2 \
2003        4,1 $inner.numisolines -anchor w -pady 2 \
2004        5,0 $inner.stretch    -anchor w -pady 2 -cspan 2 \
2005        6,0 $inner.edges      -anchor w -pady 2 -cspan 2 \
2006        7,0 $inner.legend     -anchor w -pady 2 -cspan 2 \
2007        8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
2008        9,0 $inner.wireframe  -anchor w -pady 2 -cspan 2\
2009        10,0 $inner.isolines   -anchor w -pady 2 -cspan 2 \
2010        11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
2011        12,0 $inner.outline    -anchor w -pady 2 -cspan 2 \
2012        13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
2013        14,0 $inner.lighting   -anchor w -pady 2 -cspan 2 \
2014        15,0 $inner.opacity_l -anchor w -pady 2 \
2015        15,1 $inner.opacity   -fill x   -pady 2 \
2016        16,0 $inner.scale_l   -anchor w -pady 2 -cspan 2 \
2017        16,1 $inner.scale     -fill x   -pady 2 -cspan 2 \
2018
2019    blt::table configure $inner r* c* -resize none
2020    blt::table configure $inner r17 c1 -resize expand
2021}
2022
2023itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
2024
2025    set fg [option get $itk_component(hull) font Font]
2026    #set bfg [option get $itk_component(hull) boldFont Font]
2027
2028    set inner [$itk_component(main) insert end \
2029        -title "Axis Settings" \
2030        -icon [Rappture::icon axis2]]
2031    $inner configure -borderwidth 4
2032
2033    checkbutton $inner.visible \
2034        -text "Axes" \
2035        -variable [itcl::scope _settings(-axisvisible)] \
2036        -command [itcl::code $this AdjustSetting -axisvisible] \
2037        -font "Arial 9"
2038    checkbutton $inner.labels \
2039        -text "Axis Labels" \
2040        -variable [itcl::scope _settings(-axislabels)] \
2041        -command [itcl::code $this AdjustSetting -axislabels] \
2042        -font "Arial 9"
2043    label $inner.grid_l -text "Grid" -font "Arial 9"
2044    checkbutton $inner.xgrid \
2045        -text "X" \
2046        -variable [itcl::scope _settings(-xgrid)] \
2047        -command [itcl::code $this AdjustSetting -xgrid] \
2048        -font "Arial 9"
2049    checkbutton $inner.ygrid \
2050        -text "Y" \
2051        -variable [itcl::scope _settings(-ygrid)] \
2052        -command [itcl::code $this AdjustSetting -ygrid] \
2053        -font "Arial 9"
2054    checkbutton $inner.zgrid \
2055        -text "Z" \
2056        -variable [itcl::scope _settings(-zgrid)] \
2057        -command [itcl::code $this AdjustSetting -zgrid] \
2058        -font "Arial 9"
2059    checkbutton $inner.minorticks \
2060        -text "Minor Ticks" \
2061        -variable [itcl::scope _settings(-axisminorticks)] \
2062        -command [itcl::code $this AdjustSetting -axisminorticks] \
2063        -font "Arial 9"
2064
2065
2066    label $inner.mode_l -text "Mode" -font "Arial 9"
2067
2068    itk_component add axisflymode {
2069        Rappture::Combobox $inner.mode -width 10 -editable no
2070    }
2071    $inner.mode choices insert end \
2072        "static_triad"    "static" \
2073        "closest_triad"   "closest" \
2074        "furthest_triad"  "farthest" \
2075        "outer_edges"     "outer"         
2076    $itk_component(axisflymode) value $_settings(-axisflymode)
2077    bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
2078
2079    blt::table $inner \
2080        0,0 $inner.visible -anchor w -cspan 4 \
2081        1,0 $inner.labels  -anchor w -cspan 4 \
2082        2,0 $inner.minorticks  -anchor w -cspan 4 \
2083        4,0 $inner.grid_l  -anchor w \
2084        4,1 $inner.xgrid   -anchor w \
2085        4,2 $inner.ygrid   -anchor w \
2086        4,3 $inner.zgrid   -anchor w \
2087        5,0 $inner.mode_l  -anchor w -padx { 2 0 } \
2088        5,1 $inner.mode    -fill x -cspan 3
2089
2090    blt::table configure $inner r* c* -resize none
2091    blt::table configure $inner r7 c6 -resize expand
2092    blt::table configure $inner r3 -height 0.125i
2093}
2094
2095
2096itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2097    set inner [$itk_component(main) insert end \
2098        -title "Camera Settings" \
2099        -icon [Rappture::icon camera]]
2100    $inner configure -borderwidth 4
2101
2102    label $inner.view_l -text "view" -font "Arial 9"
2103    set f [frame $inner.view]
2104    foreach side { front back left right top bottom } {
2105        button $f.$side  -image [Rappture::icon view$side] \
2106            -command [itcl::code $this SetOrientation $side]
2107        Rappture::Tooltip::for $f.$side "Change the view to $side"
2108        pack $f.$side -side left
2109    }
2110
2111    blt::table $inner \
2112        0,0 $inner.view_l -anchor e -pady 2 \
2113        0,1 $inner.view -anchor w -pady 2
2114
2115    set labels { qx qy qz qw xpan ypan zoom }
2116    set row 1
2117    foreach tag $labels {
2118        label $inner.${tag}label -text $tag -font "Arial 9"
2119        entry $inner.${tag} -font "Arial 9"  -bg white \
2120            -textvariable [itcl::scope _view($tag)]
2121        bind $inner.${tag} <Return> \
2122            [itcl::code $this camera set ${tag}]
2123        bind $inner.${tag} <KP_Enter> \
2124            [itcl::code $this camera set ${tag}]
2125        blt::table $inner \
2126            $row,0 $inner.${tag}label -anchor e -pady 2 \
2127            $row,1 $inner.${tag} -anchor w -pady 2
2128        blt::table configure $inner r$row -resize none
2129        incr row
2130    }
2131    checkbutton $inner.ortho \
2132        -text "Orthographic Projection" \
2133        -variable [itcl::scope _view(ortho)] \
2134        -command [itcl::code $this camera set ortho] \
2135        -font "Arial 9"
2136    blt::table $inner \
2137            $row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2138    blt::table configure $inner r$row -resize none
2139    incr row
2140
2141    blt::table configure $inner c* r* -resize none
2142    blt::table configure $inner c2 -resize expand
2143    blt::table configure $inner r$row -resize expand
2144}
2145
2146#
2147#  camera --
2148#
2149itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2150    switch -- $option {
2151        "show" {
2152            puts [array get _view]
2153        }
2154        "set" {
2155            set who [lindex $args 0]
2156            set x $_view($who)
2157            set code [catch { string is double $x } result]
2158            if { $code != 0 || !$result } {
2159                return
2160            }
2161            switch -- $who {
2162                "ortho" {
2163                    if {$_view(ortho)} {
2164                        SendCmd "camera mode ortho"
2165                    } else {
2166                        SendCmd "camera mode persp"
2167                    }
2168                }
2169                "xpan" - "ypan" {
2170                    PanCamera
2171                }
2172                "qx" - "qy" - "qz" - "qw" {
2173                    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2174                    $_arcball quaternion $q
2175                    EventuallyRotate $q
2176                }
2177                "zoom" {
2178                    SendCmd "camera zoom $_view(zoom)"
2179                }
2180            }
2181        }
2182    }
2183}
2184
2185itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2186    set bytes ""
2187    foreach dataobj [get] {
2188        foreach comp [$dataobj components] {
2189            set tag $dataobj-$comp
2190            set contents [$dataobj vtkdata $comp]
2191            append bytes "$contents\n"
2192        }
2193    }
2194    return [list .vtk $bytes]
2195}
2196
2197itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2198    if { [image width $_image(download)] > 0 &&
2199         [image height $_image(download)] > 0 } {
2200        set bytes [$_image(download) data -format "jpeg -quality 100"]
2201        set bytes [Rappture::encoding::decode -as b64 $bytes]
2202        return [list .jpg $bytes]
2203    }
2204    return ""
2205}
2206
2207itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2208    Rappture::Balloon $popup \
2209        -title "[Rappture::filexfer::label downloadWord] as..."
2210    set inner [$popup component inner]
2211    label $inner.summary -text "" -anchor w
2212    radiobutton $inner.vtk_button -text "VTK data file" \
2213        -variable [itcl::scope _downloadPopup(format)] \
2214        -font "Arial 9 " \
2215        -value vtk 
2216    Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2217    radiobutton $inner.image_button -text "Image File" \
2218        -variable [itcl::scope _downloadPopup(format)] \
2219        -font "Arial 9 " \
2220        -value image
2221    Rappture::Tooltip::for $inner.image_button \
2222        "Save as digital image."
2223
2224    button $inner.ok -text "Save" \
2225        -highlightthickness 0 -pady 2 -padx 3 \
2226        -command $command \
2227        -compound left \
2228        -image [Rappture::icon download]
2229
2230    button $inner.cancel -text "Cancel" \
2231        -highlightthickness 0 -pady 2 -padx 3 \
2232        -command [list $popup deactivate] \
2233        -compound left \
2234        -image [Rappture::icon cancel]
2235
2236    blt::table $inner \
2237        0,0 $inner.summary -cspan 2  \
2238        1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2239        2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2240        4,1 $inner.cancel -width .9i -fill y \
2241        4,0 $inner.ok -padx 2 -width .9i -fill y
2242    blt::table configure $inner r3 -height 4
2243    blt::table configure $inner r4 -pady 4
2244    raise $inner.image_button
2245    $inner.vtk_button invoke
2246    return $inner
2247}
2248
2249#
2250# SetObjectStyle --
2251#
2252#       Set the style of the heightmap/contour object.  This gets calls
2253#       for each dataset once as it is loaded.  It can overridden by
2254#       the user controls.
2255#
2256#
2257itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2258    # Parse style string.
2259    set tag $dataobj-$comp
2260    array set style {
2261        -color BCGYR
2262        -levels 10
2263        -opacity 1.0
2264    }
2265    set stylelist [$dataobj style $comp]
2266    if { $stylelist != "" } {
2267        array set style $stylelist
2268    }
2269    # This is too complicated.  We want to set the colormap, number of
2270    # isolines and opacity for the dataset.  They can be the default values,
2271    # the style hints loaded with the dataset, or set by user controls.  As
2272    # datasets get loaded, they first use the defaults that are overidden
2273    # by the style hints.  If the user changes the global controls, then that
2274    # overrides everything else.  I don't know what it means when global
2275    # controls are specified as style hints by each dataset.  It complicates
2276    # the code to handle aberrant cases.
2277
2278    if { $_changed(-opacity) } {
2279        set style(-opacity) [expr $_settings(-opacity) * 0.01]
2280    }
2281    if { $_changed(-numisolines) } {
2282        set style(-levels) $_settings(-numisolines)
2283    }
2284    if { $_changed(-colormap) } {
2285        set style(-color) $_settings(-colormap)
2286    }
2287    if { $_currentColormap == "" } {
2288        $itk_component(colormap) value $style(-color)
2289    }
2290    if { [info exists style(-stretchtofit)] } {
2291        set _settings(-stretchtofit) $style(-stretchtofit)
2292        AdjustSetting -stretchtofit
2293    }
2294    if { $_currentNumIsolines != $style(-levels) } {
2295        set _currentNumIsolines $style(-levels)
2296        set _settings(-numisolines) $_currentNumIsolines
2297        $itk_component(numisolines) value $_currentNumIsolines
2298        UpdateContourList
2299        DrawLegend
2300    }
2301    SendCmd "outline add $tag"
2302    SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2303    SendCmd "outline visible $_settings(-outline) $tag"
2304    set scale [GetHeightmapScale]
2305    SendCmd "[list heightmap add contourlist $_contourList $scale $tag]"
2306    set _comp2scale($tag) $_settings(-heightmapscale)
2307    SendCmd "heightmap edges $_settings(-edges) $tag"
2308    SendCmd "heightmap wireframe $_settings(-wireframe) $tag"
2309    SetCurrentColormap $style(-color)
2310    set color [$itk_component(isolinecolor) value]
2311    SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2312    SendCmd "heightmap lighting $_settings(-isheightmap) $tag"
2313    SendCmd "heightmap isolines $_settings(-isolinesvisible) $tag"
2314    SendCmd "heightmap surface $_settings(-colormapvisible) $tag"
2315    SendCmd "heightmap opacity $style(-opacity) $tag"
2316    set _settings(-opacity) [expr $style(-opacity) * 100.0]
2317}
2318
2319itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2320    if {[catch {$dataobj isa Rappture::Field} valid] != 0 || !$valid} {
2321        return 0
2322    }
2323    return 1
2324}
2325
2326# ----------------------------------------------------------------------
2327# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2328#
2329# Invoked automatically whenever the "legend" command comes in from
2330# the rendering server.  Indicates that binary image data with the
2331# specified <size> will follow.
2332# ----------------------------------------------------------------------
2333itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2334    #puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2335    if { [isconnected] } {
2336        set bytes [ReceiveBytes $size]
2337        if { ![info exists _image(legend)] } {
2338            set _image(legend) [image create photo]
2339        }
2340        $_image(legend) configure -data $bytes
2341        #puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2342        if { [catch {DrawLegend} errs] != 0 } {
2343            global errorInfo
2344            puts stderr "errs=$errs errorInfo=$errorInfo"
2345        }
2346    }
2347}
2348
2349#
2350# DrawLegend --
2351#
2352#       Draws the legend in the own canvas on the right side of the plot area.
2353#
2354itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2355    set fname $_curFldName
2356    set c $itk_component(view)
2357    set w [winfo width $c]
2358    set h [winfo height $c]
2359    set font "Arial 8"
2360    set lineht [font metrics $font -linespace]
2361   
2362    if { [string match "component*" $fname] } {
2363        set title ""
2364    } else {
2365        if { [info exists _fields($fname)] } {
2366            foreach { title units } $_fields($fname) break
2367            if { $units != "" } {
2368                set title [format "%s (%s)" $title $units]
2369            }
2370        } else {
2371            set title $fname
2372        }
2373    }
2374    set x [expr $w - 2]
2375    if { !$_settings(-legendvisible) } {
2376        $c delete legend
2377        return
2378    }
2379    if { [$c find withtag "legend"] == "" } {
2380        set y 2
2381        # If there's a legend title, create a text item for the title.
2382        $c create text $x $y \
2383            -anchor ne \
2384            -fill $itk_option(-plotforeground) -tags "title legend" \
2385            -font $font
2386        if { $title != "" } {
2387            incr y $lineht
2388        }
2389        $c create text $x $y \
2390            -anchor ne \
2391            -fill $itk_option(-plotforeground) -tags "vmax legend" \
2392            -font $font
2393        incr y $lineht
2394        $c create image $x $y \
2395            -anchor ne \
2396            -image $_image(legend) -tags "colormap legend"
2397        $c create rectangle $x $y 1 1 \
2398            -fill "" -outline "" -tags "sensor legend"
2399        $c create text $x [expr {$h-2}] \
2400            -anchor se \
2401            -fill $itk_option(-plotforeground) -tags "vmin legend" \
2402            -font $font
2403        $c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2404        $c bind sensor <Leave> [itcl::code $this LeaveLegend]
2405        $c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2406    }
2407    $c delete isoline
2408    set x2 $x
2409    set iw [image width $_image(legend)]
2410    set ih [image height $_image(legend)]
2411    set x1 [expr $x2 - ($iw*12)/10]
2412    set color [$itk_component(isolinecolor) value]
2413
2414    # Draw the isolines on the legend.
2415    array unset _isolines
2416    if { $color != "none"  && [info exists _limits($_curFldName)] &&
2417         $_settings(-isolinesvisible) && $_currentNumIsolines > 0 } {
2418
2419        foreach { vmin vmax } $_limits($_curFldName) break
2420        set range [expr double($vmax - $vmin)]
2421        if { $range <= 0.0 } {
2422            set range 1.0;              # Min is greater or equal to max.
2423        }
2424        set tags "isoline legend"
2425        set offset [expr 2 + $lineht]
2426        if { $title != "" } {
2427            incr offset $lineht
2428        }
2429        foreach value $_contourList {
2430            set norm [expr 1.0 - (($value - $vmin) / $range)]
2431            set y1 [expr int(round(($norm * $ih) + $offset))]
2432            for { set off 0 } { $off < 3 } { incr off } {
2433                set _isolines([expr $y1 + $off]) $value
2434                set _isolines([expr $y1 - $off]) $value
2435            }
2436            $c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2437        }
2438    }
2439
2440    $c bind title <ButtonPress> [itcl::code $this Combo post]
2441    $c bind title <Enter> [itcl::code $this Combo activate]
2442    $c bind title <Leave> [itcl::code $this Combo deactivate]
2443    # Reset the item coordinates according the current size of the plot.
2444    if { [info exists _limits($_curFldName)] } {
2445        foreach { vmin vmax } $_limits($_curFldName) break
2446        $c itemconfigure vmin -text [format %g $vmin]
2447        $c itemconfigure vmax -text [format %g $vmax]
2448    }
2449    set y 2
2450    # If there's a legend title, move the title to the correct position
2451    if { $title != "" } {
2452        $c itemconfigure title -text $title
2453        $c coords title $x $y
2454        incr y $lineht
2455    }
2456    $c coords vmax $x $y
2457    incr y $lineht
2458    $c coords colormap $x $y
2459    $c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2460    $c raise sensor
2461    $c coords vmin $x [expr {$h - 2}]
2462}
2463
2464#
2465# EnterLegend --
2466#
2467itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2468    SetLegendTip $x $y
2469}
2470
2471#
2472# MotionLegend --
2473#
2474itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2475    Rappture::Tooltip::tooltip cancel
2476    set c $itk_component(view)
2477    set cw [winfo width $c]
2478    set ch [winfo height $c]
2479    if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2480        SetLegendTip $x $y
2481    }
2482}
2483
2484#
2485# LeaveLegend --
2486#
2487itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2488    Rappture::Tooltip::tooltip cancel
2489    .rappturetooltip configure -icon ""
2490}
2491
2492#
2493# SetLegendTip --
2494#
2495itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2496    set fname $_curFldName
2497    set c $itk_component(view)
2498    set w [winfo width $c]
2499    set h [winfo height $c]
2500    set font "Arial 8"
2501    set lineht [font metrics $font -linespace]
2502   
2503    set ih [image height $_image(legend)]
2504    # Subtract off the offset of the color ramp from the top of the canvas
2505    set iy [expr $y - ($lineht + 2)]
2506
2507    if { [string match "component*" $fname] } {
2508        set title ""
2509    } else {
2510        if { [info exists _fields($fname)] } {
2511            foreach { title units } $_fields($fname) break
2512            if { $units != "" } {
2513                set title [format "%s (%s)" $title $units]
2514            }
2515        } else {
2516            set title $fname
2517        }
2518    }
2519    # If there's a legend title, increase the offset by the line height.
2520    if { $title != "" } {
2521        incr iy -$lineht
2522    }
2523
2524    # Make a swatch of the selected color
2525    if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2526        return
2527    }
2528
2529    if { ![info exists _image(swatch)] } {
2530        set _image(swatch) [image create photo -width 24 -height 24]
2531    }
2532    set color [eval format "\#%02x%02x%02x" $pixel]
2533    $_image(swatch) put black  -to 0 0 23 23
2534    $_image(swatch) put $color -to 1 1 22 22
2535
2536    # Compute the value of the point
2537    if { [info exists _limits($fname)] } {
2538        foreach { vmin vmax } $_limits($fname) break
2539        set t [expr 1.0 - (double($iy) / double($ih-1))]
2540        set value [expr $t * ($vmax - $vmin) + $vmin]
2541    } else {
2542        set value 0.0
2543    }
2544    set tipx [expr $x + 15]
2545    set tipy [expr $y - 5]
2546    .rappturetooltip configure -icon $_image(swatch)
2547    if { [info exists _isolines($y)] } {
2548        Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2549    } else {
2550        Rappture::Tooltip::text $c [format "$title %g" $value]
2551    }
2552    Rappture::Tooltip::tooltip show $c +$tipx,+$tipy   
2553}
2554
2555# ----------------------------------------------------------------------
2556# USAGE: _dropdown post
2557# USAGE: _dropdown unpost
2558# USAGE: _dropdown select
2559#
2560# Used internally to handle the dropdown list for this combobox.  The
2561# post/unpost options are invoked when the list is posted or unposted
2562# to manage the relief of the controlling button.  The select option
2563# is invoked whenever there is a selection from the list, to assign
2564# the value back to the gauge.
2565# ----------------------------------------------------------------------
2566itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2567    set c $itk_component(view)
2568    switch -- $option {
2569        post {
2570            foreach { x1 y1 x2 y2 } [$c bbox title] break
2571            set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2572            set x [expr $x1 + [winfo rootx $itk_component(view)]]
2573            set y [expr $y2 + [winfo rooty $itk_component(view)]]
2574            tk_popup $itk_component(fieldmenu) $x $y
2575        }
2576        activate {
2577            $c itemconfigure title -fill red
2578        }
2579        deactivate {
2580            $c itemconfigure title -fill $itk_option(-plotforeground)
2581        }
2582        invoke {
2583            $itk_component(field) value $_curFldLabel
2584            AdjustSetting -field
2585        }
2586        default {
2587            error "bad option \"$option\": should be post, unpost, select"
2588        }
2589    }
2590}
2591
2592itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2593    if {  $_settings(-isheightmap) } {
2594        set val $_settings(-heightmapscale)
2595        set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2596        return $sval
2597    }
2598    return 0
2599}
2600
2601itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2602    array set positions {
2603        front  "0.707107 0.707107 0 0"
2604        back   "0 0 0.707107 0.707107"
2605        left   "0.5 0.5 -0.5 -0.5"
2606        right  "0.5 0.5 0.5 0.5"
2607        top    "1 0 0 0"
2608        bottom "0 1 0 0"
2609    }
2610    foreach name { qw qx qy qz } value $positions($side) {
2611        set _view($name) $value
2612    }
2613    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2614    $_arcball quaternion $q
2615    SendCmd "camera orient $q"
2616    SendCmd "camera reset"
2617    set _view(xpan) 0
2618    set _view(ypan) 0
2619    set _view(zoom) 1.0
2620}
2621
2622itcl::body Rappture::VtkHeightmapViewer::UpdateContourList {} {
2623    if {$_currentNumIsolines == 0} {
2624        set _contourList ""
2625        return
2626    }
2627    if { ![info exists _limits($_curFldName)] } {
2628        return
2629    }
2630    foreach { vmin vmax } $_limits($_curFldName) break
2631    set v [blt::vector create \#auto]
2632    $v seq $vmin $vmax [expr $_currentNumIsolines+2]
2633    $v delete end 0
2634    set _contourList [$v range 0 end]
2635    blt::vector destroy $v
2636}
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