source: branches/uq/gui/scripts/vtkheightmapviewer.tcl @ 4797

Last change on this file since 4797 was 4797, checked in by gah, 6 years ago

sync with 1.4-pre

File size: 87.6 KB
Line 
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 parameters {title args} {
61        # do nothing
62    }
63    public method scale {args}
64
65    protected method CameraReset {}
66    protected method Connect {}
67    protected method CurrentDatasets {args}
68    protected method Disconnect {}
69    protected method DoResize {}
70    protected method DoRotate {}
71    protected method AdjustSetting {what {value ""}}
72    protected method AdjustMode {}
73    protected method InitSettings { args  }
74    protected method Pan {option x y}
75    protected method Pick {x y}
76    protected method Rebuild {}
77    protected method ReceiveDataset { args }
78    protected method ReceiveImage { args }
79    protected method ReceiveLegend { colormap title min max size }
80    protected method Rotate {option x y}
81    protected method Zoom {option}
82
83    # The following methods are only used by this class.
84    private method BuildAxisTab {}
85    private method BuildCameraTab {}
86    private method BuildColormap { name }
87    private method BuildContourTab {}
88    private method BuildDownloadPopup { widget command }
89    private method Combo { option }
90    private method DrawLegend {}
91    private method EnterLegend { x y }
92    private method EventuallyRequestLegend {}
93    private method EventuallyResize { w h }
94    private method EventuallyRotate { q }
95    private method GetImage { args }
96    private method GetVtkData { args }
97    private method IsValidObject { dataobj }
98    private method LeaveLegend {}
99    private method MotionLegend { x y }
100    private method PanCamera {}
101    private method RequestLegend {}
102    private method SetCurrentColormap { color }
103    private method SetLegendTip { x y }
104    private method SetObjectStyle { dataobj comp }
105    private method GetHeightmapScale {}
106    private method ResetAxes {}
107    private method SetOrientation { side }
108    private method UpdateContourList {}
109
110    private variable _arcball ""
111    private variable _dlist ""     ;    # list of data objects
112    private variable _obj2datasets
113    private variable _obj2ovride   ;    # maps dataobj => style override
114    private variable _comp2scale;       # maps dataset to the heightmap scale.
115    private variable _datasets     ;    # contains all the dataobj-component
116                                   ;    # datasets in the server
117    private variable _colormaps    ;    # contains all the colormaps
118                                   ;    # in the server.
119
120    # The name of the current colormap used.  The colormap is global to all
121    # heightmaps displayed.
122    private variable _currentColormap ""
123    private variable _currentNumIsolines -1
124
125    private variable _maxScale 100;     # This is the # of times the x-axis
126                                        # and y-axis ranges can differ before
127                                        # automatically turning on
128                                        # -stretchtofit
129
130    private variable _click        ;    # info used for rotate operations
131    private variable _limits       ;    # Holds overall limits for all dataobjs
132                                        # using the viewer.
133    private variable _view         ;    # view params for 3D view
134    private variable _settings
135    private variable _changed
136    private variable _initialStyle "";  # First found style in dataobjects.
137    private variable _reset 1;          # Indicates if camera needs to be reset
138                                        # to starting position.
139    private variable _beforeConnect 1;  # Indicates if camera needs to be reset
140                                        # to starting position.
141
142    private variable _first ""     ;    # This is the topmost dataset.
143    private variable _start 0
144    private variable _isolines
145    private variable _contourList ""
146
147    common _downloadPopup;              # download options from popup
148    private common _hardcopy
149    private variable _width 0
150    private variable _height 0
151    private variable _legendWidth 0
152    private variable _legendHeight 0
153    private variable _resizePending 0
154    private variable _rotatePending 0
155    private variable _legendPending 0
156    private variable _fieldNames {}
157    private variable _fields
158    private variable _curFldName ""
159    private variable _curFldLabel ""
160    private variable _colorMode "scalar";#  Mode of colormap (vmag or scalar)
161}
162
163itk::usual VtkHeightmapViewer {
164    keep -background -foreground -cursor -font
165    keep -plotbackground -plotforeground -mode
166}
167
168# ----------------------------------------------------------------------
169# CONSTRUCTOR
170# ----------------------------------------------------------------------
171itcl::body Rappture::VtkHeightmapViewer::constructor {hostlist args} {
172    set _serverType "vtkvis"
173
174    EnableWaitDialog 900
175    # Rebuild event
176    $_dispatcher register !rebuild
177    $_dispatcher dispatch $this !rebuild "[itcl::code $this Rebuild]; list"
178
179    # Resize event
180    $_dispatcher register !resize
181    $_dispatcher dispatch $this !resize "[itcl::code $this DoResize]; list"
182
183    # Rotate event
184    $_dispatcher register !rotate
185    $_dispatcher dispatch $this !rotate "[itcl::code $this DoRotate]; list"
186
187    # Legend event
188    $_dispatcher register !legend
189    $_dispatcher dispatch $this !legend "[itcl::code $this RequestLegend]; list"
190
191    #
192    # Populate parser with commands handle incoming requests
193    #
194    $_parser alias image [itcl::code $this ReceiveImage]
195    $_parser alias dataset [itcl::code $this ReceiveDataset]
196    $_parser alias legend [itcl::code $this ReceiveLegend]
197
198    # Create image for legend colorbar.
199    set _image(legend) [image create photo]
200
201    # Initialize the view to some default parameters.
202    array set _view {
203        qw      0.36
204        qx      0.25
205        qy      0.50
206        qz      0.70
207        zoom    1.0
208        xpan    0
209        ypan    0
210        ortho   0
211    }
212    set _arcball [blt::arcball create 100 100]
213    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
214    $_arcball quaternion $q
215
216    array set _settings {
217        -axisflymode            "static"
218        -axislabels             1
219        -axisminorticks         1
220        -axisvisible            1
221        -colormap               BCGYR
222        -colormapdiscrete       0
223        -colormapvisible        1
224        -edges                  0
225        -field                  "Default"
226        -heightmapscale         50
227        -isheightmap            0
228        -isolinecolor           black
229        -isolinesvisible        1
230        -legendvisible          1
231        -lighting               1
232        -numisolines            10
233        -opacity                100
234        -outline                0
235        -savelighting           1
236        -saveopacity            100
237        -saveoutline            0
238        -stretchtofit           0
239        -wireframe              0
240        -xgrid                  0
241        -ygrid                  0
242        -zgrid                  0
243    }
244    array set _changed {
245        -colormap               0
246        -numisolines            0
247        -opacity                0
248    }
249    itk_component add view {
250        canvas $itk_component(plotarea).view \
251            -highlightthickness 0 -borderwidth 0
252    } {
253        usual
254        ignore -highlightthickness -borderwidth -background
255    }
256
257    itk_component add fieldmenu {
258        menu $itk_component(plotarea).menu \
259            -relief flat \
260            -tearoff no
261    } {
262        usual
263        ignore -background -foreground -relief -tearoff
264    }
265    set c $itk_component(view)
266    bind $c <Configure> [itcl::code $this EventuallyResize %w %h]
267    bind $c <4> [itcl::code $this Zoom in 0.25]
268    bind $c <5> [itcl::code $this Zoom out 0.25]
269    bind $c <KeyPress-Left>  [list %W xview scroll 10 units]
270    bind $c <KeyPress-Right> [list %W xview scroll -10 units]
271    bind $c <KeyPress-Up>    [list %W yview scroll 10 units]
272    bind $c <KeyPress-Down>  [list %W yview scroll -10 units]
273    bind $c <Enter> "focus %W"
274    bind $c <Control-F1> [itcl::code $this ToggleConsole]
275
276    # Fix the scrollregion in case we go off screen
277    $c configure -scrollregion [$c bbox all]
278
279    set _map(id) [$c create image 0 0 -anchor nw -image $_image(plot)]
280    set _map(cwidth) -1
281    set _map(cheight) -1
282    set _map(zoom) 1.0
283    set _map(original) ""
284
285    set f [$itk_component(main) component controls]
286    itk_component add reset {
287        button $f.reset -borderwidth 1 -padx 1 -pady 1 \
288            -highlightthickness 0 \
289            -image [Rappture::icon reset-view] \
290            -command [itcl::code $this CameraReset]
291    } {
292        usual
293        ignore -highlightthickness
294    }
295    pack $itk_component(reset) -side top -padx 2 -pady { 2 0 }
296    Rappture::Tooltip::for $itk_component(reset) "Reset the view to the default zoom level"
297
298    itk_component add zoomin {
299        button $f.zin -borderwidth 1 -padx 1 -pady 1 \
300            -highlightthickness 0 \
301            -image [Rappture::icon zoom-in] \
302            -command [itcl::code $this Zoom in]
303    } {
304        usual
305        ignore -highlightthickness
306    }
307    pack $itk_component(zoomin) -side top -padx 2 -pady { 2 0 }
308    Rappture::Tooltip::for $itk_component(zoomin) "Zoom in"
309
310    itk_component add zoomout {
311        button $f.zout -borderwidth 1 -padx 1 -pady 1 \
312            -highlightthickness 0 \
313            -image [Rappture::icon zoom-out] \
314            -command [itcl::code $this Zoom out]
315    } {
316        usual
317        ignore -highlightthickness
318    }
319    pack $itk_component(zoomout) -side top -padx 2 -pady { 2 0 }
320    Rappture::Tooltip::for $itk_component(zoomout) "Zoom out"
321
322    itk_component add mode {
323        Rappture::PushButton $f.mode \
324            -onimage [Rappture::icon surface] \
325            -offimage [Rappture::icon surface] \
326            -variable [itcl::scope _settings(-isheightmap)] \
327            -command [itcl::code $this AdjustSetting -isheightmap] \
328    }
329    Rappture::Tooltip::for $itk_component(mode) \
330        "Toggle the surface/contour on/off"
331    pack $itk_component(mode) -padx 2 -pady { 2 0 }
332
333    itk_component add stretchtofit {
334        Rappture::PushButton $f.stretchtofit \
335            -onimage [Rappture::icon stretchtofit] \
336            -offimage [Rappture::icon stretchtofit] \
337            -variable [itcl::scope _settings(-stretchtofit)] \
338            -command [itcl::code $this AdjustSetting -stretchtofit] \
339    }
340    Rappture::Tooltip::for $itk_component(stretchtofit) \
341        "Stretch plot to fit window on/off"
342    pack $itk_component(stretchtofit) -padx 2 -pady 2
343
344    if { [catch {
345        BuildContourTab
346        BuildAxisTab
347        BuildCameraTab
348    } errs] != 0 } {
349        global errorInfo
350        puts stderr "errs=$errs errorInfo=$errorInfo"
351    }
352
353    # Hack around the Tk panewindow.  The problem is that the requested
354    # size of the 3d view isn't set until an image is retrieved from
355    # the server.  So the panewindow uses the tiny size.
356    set w 10000
357    pack forget $itk_component(view)
358    blt::table $itk_component(plotarea) \
359        0,0 $itk_component(view) -fill both -reqwidth $w
360    blt::table configure $itk_component(plotarea) c1 -resize none
361
362    # Bindings for panning via mouse
363    bind $itk_component(view) <ButtonPress-2> \
364        [itcl::code $this Pan click %x %y]
365    bind $itk_component(view) <B2-Motion> \
366        [itcl::code $this Pan drag %x %y]
367    bind $itk_component(view) <ButtonRelease-2> \
368        [itcl::code $this Pan release %x %y]
369
370    #bind $itk_component(view) <ButtonRelease-3> \
371    #    [itcl::code $this Pick %x %y]
372
373    # Bindings for panning via keyboard
374    bind $itk_component(view) <KeyPress-Left> \
375        [itcl::code $this Pan set -10 0]
376    bind $itk_component(view) <KeyPress-Right> \
377        [itcl::code $this Pan set 10 0]
378    bind $itk_component(view) <KeyPress-Up> \
379        [itcl::code $this Pan set 0 -10]
380    bind $itk_component(view) <KeyPress-Down> \
381        [itcl::code $this Pan set 0 10]
382    bind $itk_component(view) <Shift-KeyPress-Left> \
383        [itcl::code $this Pan set -2 0]
384    bind $itk_component(view) <Shift-KeyPress-Right> \
385        [itcl::code $this Pan set 2 0]
386    bind $itk_component(view) <Shift-KeyPress-Up> \
387        [itcl::code $this Pan set 0 -2]
388    bind $itk_component(view) <Shift-KeyPress-Down> \
389        [itcl::code $this Pan set 0 2]
390
391    # Bindings for zoom via keyboard
392    bind $itk_component(view) <KeyPress-Prior> \
393        [itcl::code $this Zoom out]
394    bind $itk_component(view) <KeyPress-Next> \
395        [itcl::code $this Zoom in]
396
397    bind $itk_component(view) <Enter> "focus $itk_component(view)"
398
399    if {[string equal "x11" [tk windowingsystem]]} {
400        # Bindings for zoom via mouse
401        bind $itk_component(view) <4> [itcl::code $this Zoom out]
402        bind $itk_component(view) <5> [itcl::code $this Zoom in]
403    }
404
405    set _image(download) [image create photo]
406    eval itk_initialize $args
407    Connect
408    set _beforeConnect 0
409}
410
411# ----------------------------------------------------------------------
412# DESTRUCTOR
413# ----------------------------------------------------------------------
414itcl::body Rappture::VtkHeightmapViewer::destructor {} {
415    Disconnect
416    image delete $_image(plot)
417    image delete $_image(download)
418    catch { blt::arcball destroy $_arcball }
419}
420
421itcl::body Rappture::VtkHeightmapViewer::DoResize {} {
422    if { $_width < 2 } {
423        set _width 500
424    }
425    if { $_height < 2 } {
426        set _height 500
427    }
428    set _start [clock clicks -milliseconds]
429    SendCmd "screen size [expr $_width - 20] $_height"
430
431    set font "Arial 8"
432    set lh [font metrics $font -linespace]
433    set h [expr {$_height - 2 * ($lh + 2)}]
434    if { $h != $_legendHeight } {
435        EventuallyRequestLegend
436    } else {
437        DrawLegend
438    }
439    set _resizePending 0
440}
441
442itcl::body Rappture::VtkHeightmapViewer::DoRotate {} {
443    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
444    SendCmd "camera orient $q"
445    set _rotatePending 0
446}
447
448itcl::body Rappture::VtkHeightmapViewer::EventuallyRequestLegend {} {
449    if { !$_legendPending } {
450        set _legendPending 1
451        $_dispatcher event -idle !legend
452    }
453}
454
455itcl::body Rappture::VtkHeightmapViewer::EventuallyResize { w h } {
456    set _width $w
457    set _height $h
458    $_arcball resize $w $h
459    if { !$_resizePending } {
460        set _resizePending 1
461        $_dispatcher event -after 250 !resize
462    }
463}
464
465set rotate_delay 100
466
467itcl::body Rappture::VtkHeightmapViewer::EventuallyRotate { q } {
468    foreach { _view(qw) _view(qx) _view(qy) _view(qz) } $q break
469    if { !$_rotatePending } {
470        set _rotatePending 1
471        global rotate_delay
472        $_dispatcher event -after $rotate_delay !rotate
473    }
474}
475
476# ----------------------------------------------------------------------
477# USAGE: add <dataobj> ?<settings>?
478#
479# Clients use this to add a data object to the plot.  The optional
480# <settings> are used to configure the plot.  Allowed settings are
481# -color, -brightness, -width, -linestyle, and -raise.
482# ----------------------------------------------------------------------
483itcl::body Rappture::VtkHeightmapViewer::add {dataobj {settings ""}} {
484    if { ![$dataobj isvalid] } {
485        return;                         # Object doesn't contain valid data.
486    }
487    array set params {
488        -color auto
489        -width 1
490        -linestyle solid
491        -brightness 0
492        -raise 0
493        -description ""
494        -param ""
495        -type ""
496    }
497    array set params $settings
498    set params(-description) ""
499    set params(-param) ""
500    array set params $settings
501
502    if {$params(-color) == "auto" || $params(-color) == "autoreset"} {
503        # can't handle -autocolors yet
504        set params(-color) white
505    }
506    set pos [lsearch -exact $_dlist $dataobj]
507    if {$pos < 0} {
508        lappend _dlist $dataobj
509    }
510    set _obj2ovride($dataobj-color) $params(-color)
511    set _obj2ovride($dataobj-width) $params(-width)
512    set _obj2ovride($dataobj-raise) $params(-raise)
513    $_dispatcher event -idle !rebuild
514}
515
516
517# ----------------------------------------------------------------------
518# USAGE: delete ?<dataobj1> <dataobj2> ...?
519#
520#       Clients use this to delete a dataobj from the plot.  If no dataobjs
521#       are specified, then all dataobjs are deleted.  No data objects are
522#       deleted.  They are only removed from the display list.
523#
524# ----------------------------------------------------------------------
525itcl::body Rappture::VtkHeightmapViewer::delete {args} {
526    if { [llength $args] == 0} {
527        set args $_dlist
528    }
529    # Delete all specified dataobjs
530    set changed 0
531    foreach dataobj $args {
532        set pos [lsearch -exact $_dlist $dataobj]
533        if { $pos < 0 } {
534            continue;                   # Don't know anything about it.
535        }
536        # Remove it from the dataobj list.
537        set _dlist [lreplace $_dlist $pos $pos]
538        array unset _obj2ovride $dataobj-*
539        array unset _settings $dataobj-*
540        set changed 1
541    }
542    # If anything changed, then rebuild the plot
543    if { $changed } {
544        $_dispatcher event -idle !rebuild
545    }
546}
547
548# ----------------------------------------------------------------------
549# USAGE: get ?-objects?
550# USAGE: get ?-visible?
551# USAGE: get ?-image view?
552#
553# Clients use this to query the list of objects being plotted, in
554# order from bottom to top of this result.  The optional "-image"
555# flag can also request the internal images being shown.
556# ----------------------------------------------------------------------
557itcl::body Rappture::VtkHeightmapViewer::get {args} {
558    if {[llength $args] == 0} {
559        set args "-objects"
560    }
561    set op [lindex $args 0]
562    switch -- $op {
563        "-objects" {
564            # put the dataobj list in order according to -raise options
565            set dlist {}
566            foreach dataobj $_dlist {
567                if { ![IsValidObject $dataobj] } {
568                    continue
569                }
570                if {[info exists _obj2ovride($dataobj-raise)] &&
571                    $_obj2ovride($dataobj-raise)} {
572                    set dlist [linsert $dlist 0 $dataobj]
573                } else {
574                    lappend dlist $dataobj
575                }
576            }
577            return $dlist
578        }
579        "-visible" {
580            set dlist {}
581            foreach dataobj $_dlist {
582                if { ![IsValidObject $dataobj] } {
583                    continue
584                }
585                if { ![info exists _obj2ovride($dataobj-raise)] } {
586                    # No setting indicates that the object isn't visible.
587                    continue
588                }
589                # Otherwise use the -raise parameter to put the object to
590                # the front of the list.
591                if { $_obj2ovride($dataobj-raise) } {
592                    set dlist [linsert $dlist 0 $dataobj]
593                } else {
594                    lappend dlist $dataobj
595                }
596            }
597            return $dlist
598        }           
599        -image {
600            if {[llength $args] != 2} {
601                error "wrong # args: should be \"get -image view\""
602            }
603            switch -- [lindex $args end] {
604                view {
605                    return $_image(plot)
606                }
607                default {
608                    error "bad image name \"[lindex $args end]\": should be view"
609                }
610            }
611        }
612        default {
613            error "bad option \"$op\": should be -objects or -image"
614        }
615    }
616}
617
618#
619# scale  --
620#
621#       This gets called either incrementally as new simulations are
622#       added or all at once as a sequence of heightmaps.
623#       This  accounts for all objects--even those not showing on the
624#       screen.  Because of this, the limits are appropriate for all
625#       objects as the user scans through data in the ResultSet viewer.
626#
627itcl::body Rappture::VtkHeightmapViewer::scale {args} {
628    foreach dataobj $args {
629        if { ![$dataobj isvalid] } {
630            continue;                   # Object doesn't contain valid data.
631        }
632        foreach axis { x y } {
633            set lim [$dataobj limits $axis]
634            if { ![info exists _limits($axis)] } {
635                set _limits($axis) $lim
636                continue
637            }
638            foreach {min max} $lim break
639            foreach {amin amax} $_limits($axis) break
640            if { $amin > $min } {
641                set amin $min
642            }
643            if { $amax < $max } {
644                set amax $max
645            }
646            set _limits($axis) [list $amin $amax]
647            set units [$dataobj hints ${axis}units]
648            set found($units) 1
649        }
650        foreach { fname lim } [$dataobj fieldlimits] {
651            if { ![info exists _limits($fname)] } {
652                set _limits($fname) $lim
653                continue
654            }
655            foreach {min max} $lim break
656            foreach {fmin fmax} $_limits($fname) break
657            if { $fmin > $min } {
658                set fmin $min
659            }
660            if { $fmax < $max } {
661                set fmax $max
662            }
663            set _limits($fname) [list $fmin $fmax]
664        }
665    }
666    if { [array size found] > 1 } {
667        set _settings(-stretchtofit) 1
668    } else {
669        # Check if the range of the x and y axes requires that we stretch
670        # the contour to fit the plotting area.  This can happen when the
671        # x and y scales differ greatly (> 100x)
672        foreach {xmin xmax} $_limits(x) break
673        foreach {ymin ymax} $_limits(y) break
674        if { (($xmax - $xmin) > (($ymax -$ymin) * $_maxScale)) ||
675             ((($xmax - $xmin) * $_maxScale) < ($ymax -$ymin)) } {
676            set _settings(-stretchtofit) 1
677        }
678    }
679}
680
681# ----------------------------------------------------------------------
682# USAGE: download coming
683# USAGE: download controls <downloadCommand>
684# USAGE: download now
685#
686# Clients use this method to create a downloadable representation
687# of the plot.  Returns a list of the form {ext string}, where
688# "ext" is the file extension (indicating the type of data) and
689# "string" is the data itself.
690# ----------------------------------------------------------------------
691itcl::body Rappture::VtkHeightmapViewer::download {option args} {
692    switch $option {
693        coming {
694            if {[catch {
695                blt::winop snap $itk_component(plotarea) $_image(download)
696            }]} {
697                $_image(download) configure -width 1 -height 1
698                $_image(download) put #000000
699            }
700        }
701        controls {
702            set popup .vtkviewerdownload
703            if { ![winfo exists .vtkviewerdownload] } {
704                set inner [BuildDownloadPopup $popup [lindex $args 0]]
705            } else {
706                set inner [$popup component inner]
707            }
708            set _downloadPopup(image_controls) $inner.image_frame
709            set num [llength [get]]
710            set num [expr {($num == 1) ? "1 result" : "$num results"}]
711            set word [Rappture::filexfer::label downloadWord]
712            $inner.summary configure -text "$word $num in the following format:"
713            update idletasks            ;# Fix initial sizes
714            return $popup
715        }
716        now {
717            set popup .vtkviewerdownload
718            if {[winfo exists .vtkviewerdownload]} {
719                $popup deactivate
720            }
721            switch -- $_downloadPopup(format) {
722                "image" {
723                    return [$this GetImage [lindex $args 0]]
724                }
725                "vtk" {
726                    return [$this GetVtkData [lindex $args 0]]
727                }
728            }
729            return ""
730        }
731        default {
732            error "bad option \"$option\": should be coming, controls, now"
733        }
734    }
735}
736
737# ----------------------------------------------------------------------
738# USAGE: Connect ?<host:port>,<host:port>...?
739#
740# Clients use this method to establish a connection to a new
741# server, or to reestablish a connection to the previous server.
742# Any existing connection is automatically closed.
743# ----------------------------------------------------------------------
744itcl::body Rappture::VtkHeightmapViewer::Connect {} {
745    global readyForNextFrame
746    set readyForNextFrame 1
747    set _reset 1
748    set _hosts [GetServerList "vtkvis"]
749    if { "" == $_hosts } {
750        return 0
751    }
752    set result [VisViewer::Connect $_hosts]
753    if { $result } {
754        if { $_reportClientInfo }  {
755            # Tell the server the viewer, hub, user and session.
756            # Do this immediately on connect before buffering any commands
757            global env
758
759            set info {}
760            set user "???"
761            if { [info exists env(USER)] } {
762                set user $env(USER)
763            }
764            set session "???"
765            if { [info exists env(SESSION)] } {
766                set session $env(SESSION)
767            }
768            lappend info "version" "$Rappture::version"
769            lappend info "build" "$Rappture::build"
770            lappend info "svnurl" "$Rappture::svnurl"
771            lappend info "installdir" "$Rappture::installdir"
772            lappend info "hub" [exec hostname]
773            lappend info "client" "vtkheightmapviewer"
774            lappend info "user" $user
775            lappend info "session" $session
776            SendCmd "clientinfo [list $info]"
777        }
778        set w [winfo width $itk_component(view)]
779        set h [winfo height $itk_component(view)]
780        EventuallyResize $w $h
781    }
782    return $result
783}
784
785#
786# isconnected --
787#
788#       Indicates if we are currently connected to the visualization server.
789#
790itcl::body Rappture::VtkHeightmapViewer::isconnected {} {
791    return [VisViewer::IsConnected]
792}
793
794#
795# disconnect --
796#
797itcl::body Rappture::VtkHeightmapViewer::disconnect {} {
798    Disconnect
799    set _reset 1
800}
801
802#
803# Disconnect --
804#
805#       Clients use this method to disconnect from the current rendering
806#       server.
807#
808itcl::body Rappture::VtkHeightmapViewer::Disconnect {} {
809    VisViewer::Disconnect
810
811    $_dispatcher cancel !rebuild
812    $_dispatcher cancel !resize
813    $_dispatcher cancel !rotate
814    $_dispatcher cancel !legend
815    # disconnected -- no more data sitting on server
816    array unset _datasets
817    array unset _data
818    array unset _colormaps
819    array unset _obj2datasets
820    global readyForNextFrame
821    set readyForNextFrame 1
822}
823
824# ----------------------------------------------------------------------
825# USAGE: ReceiveImage -bytes <size> -type <type> -token <token>
826#
827# Invoked automatically whenever the "image" command comes in from
828# the rendering server.  Indicates that binary image data with the
829# specified <size> will follow.
830# ----------------------------------------------------------------------
831itcl::body Rappture::VtkHeightmapViewer::ReceiveImage { args } {
832    global readyForNextFrame
833    set readyForNextFrame 1
834    array set info {
835        -token "???"
836        -bytes 0
837        -type image
838    }
839    array set info $args
840    set bytes [ReceiveBytes $info(-bytes)]
841    if { $info(-type) == "image" } {
842        if 0 {
843            set f [open "last.ppm" "w"]
844            puts $f $bytes
845            close $f
846        }
847        $_image(plot) configure -data $bytes
848        set time [clock seconds]
849        set date [clock format $time]
850        #puts stderr "$date: received image [image width $_image(plot)]x[image height $_image(plot)] image>"       
851        if { $_start > 0 } {
852            set finish [clock clicks -milliseconds]
853            #puts stderr "round trip time [expr $finish -$_start] milliseconds"
854            set _start 0
855        }
856    } elseif { $info(type) == "print" } {
857        set tag $this-print-$info(-token)
858        set _hardcopy($tag) $bytes
859    }
860}
861
862#
863# ReceiveDataset --
864#
865itcl::body Rappture::VtkHeightmapViewer::ReceiveDataset { args } {
866    if { ![isconnected] } {
867        return
868    }
869    set option [lindex $args 0]
870    switch -- $option {
871        "scalar" {
872            set option [lindex $args 1]
873            switch -- $option {
874                "world" {
875                    foreach { x y z value tag } [lrange $args 2 end] break
876                }
877                "pixel" {
878                    foreach { x y value tag } [lrange $args 2 end] break
879                }
880            }
881        }
882        "vector" {
883            set option [lindex $args 1]
884            switch -- $option {
885                "world" {
886                    foreach { x y z vx vy vz tag } [lrange $args 2 end] break
887                }
888                "pixel" {
889                    foreach { x y vx vy vz tag } [lrange $args 2 end] break
890                }
891            }
892        }
893        "names" {
894            foreach { name } [lindex $args 1] {
895                #puts stderr "Dataset: $name"
896            }
897        }
898        default {
899            error "unknown dataset option \"$option\" from server"
900        }
901    }
902}
903
904# ----------------------------------------------------------------------
905# USAGE: Rebuild
906#
907# Called automatically whenever something changes that affects the
908# data in the widget.  Clears any existing data and rebuilds the
909# widget to display new data.
910# ----------------------------------------------------------------------
911itcl::body Rappture::VtkHeightmapViewer::Rebuild {} {
912    set w [winfo width $itk_component(view)]
913    set h [winfo height $itk_component(view)]
914    if { $w < 2 || $h < 2 } {
915        $_dispatcher event -idle !rebuild
916        return
917    }
918
919    # Turn on buffering of commands to the server.  We don't want to
920    # be preempted by a server disconnect/reconnect (which automatically
921    # generates a new call to Rebuild).   
922    StartBufferingCommands
923
924    if { $_width != $w || $_height != $h || $_reset } {
925        set _width $w
926        set _height $h
927        $_arcball resize $w $h
928        DoResize
929        if { $_settings(-stretchtofit) } {
930            AdjustSetting -stretchtofit
931        }
932    }
933    if { $_reset } {
934        #
935        # Reset the camera and other view parameters
936        #
937        InitSettings -isheightmap -background
938
939        # Setting a custom exponent and label format for axes is causing
940        # a problem with rounding.  Near zero ticks aren't rounded by
941        # the %g format.  The VTK CubeAxes seem to currently work best
942        # when allowed to automatically set the exponent and precision
943        # based on the axis ranges.  This does tend to result in less
944        # visual clutter, so I think it is best to use the automatic
945        # settings by default.  We can test more fine-grained
946        # controls on the axis settings tab if necessary.
947        # -Leif
948        #SendCmd "axis exp 0 0 0 1"
949
950        SendCmd "axis lrot z 90"
951        set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
952        $_arcball quaternion $q
953        if {$_settings(-isheightmap) } {
954            if { $_view(ortho)} {
955                SendCmd "camera mode ortho"
956            } else {
957                SendCmd "camera mode persp"
958            }
959            DoRotate
960            SendCmd "camera reset"
961        }
962        PanCamera
963        StopBufferingCommands
964        SendCmd "imgflush"
965        StartBufferingCommands
966    }
967
968    set _first ""
969    # Start off with no datasets are visible.
970    SendCmd "dataset visible 0"
971    set scale [GetHeightmapScale]
972    foreach dataobj [get -objects] {
973        if { [info exists _obj2ovride($dataobj-raise)] &&  $_first == "" } {
974            set _first $dataobj
975        }
976        set _obj2datasets($dataobj) ""
977        foreach comp [$dataobj components] {
978            set tag $dataobj-$comp
979            if { ![info exists _datasets($tag)] } {
980                set bytes [$dataobj vtkdata $comp]
981                if 0 {
982                    set f [open /tmp/vtkheightmap.vtk "w"]
983                    puts $f $bytes
984                    close $f
985                }
986                set length [string length $bytes]
987                if { $_reportClientInfo }  {
988                    set info {}
989                    lappend info "tool_id"       [$dataobj hints toolId]
990                    lappend info "tool_name"     [$dataobj hints toolName]
991                    lappend info "tool_version"  [$dataobj hints toolRevision]
992                    lappend info "tool_title"    [$dataobj hints toolTitle]
993                    lappend info "dataset_label" [$dataobj hints label]
994                    lappend info "dataset_size"  $length
995                    lappend info "dataset_tag"   $tag
996                    SendCmd [list "clientinfo" $info]
997                }
998                SendCmd "dataset add $tag data follows $length"
999                append _outbuf $bytes
1000                set _datasets($tag) 1
1001                SetObjectStyle $dataobj $comp
1002            }
1003            lappend _obj2datasets($dataobj) $tag
1004            if { [info exists _obj2ovride($dataobj-raise)] } {
1005                # Setting dataset visible enables outline
1006                # and heightmap
1007                SendCmd "dataset visible 1 $tag"
1008            }
1009            if { ![info exists _comp2scale($tag)] ||
1010                 $_comp2scale($tag) != $scale } {
1011                SendCmd "heightmap heightscale $scale $tag"
1012                set _comp2scale($tag) $scale
1013            }
1014        }
1015    }
1016    if { $_first != ""  } {
1017        $itk_component(field) choices delete 0 end
1018        $itk_component(fieldmenu) delete 0 end
1019        array unset _fields
1020        set _curFldName ""
1021        foreach cname [$_first components] {
1022            foreach fname [$_first fieldnames $cname] {
1023                if { [info exists _fields($fname)] } {
1024                    continue
1025                }
1026                foreach { label units components } \
1027                    [$_first fieldinfo $fname] break
1028                $itk_component(field) choices insert end "$fname" "$label"
1029                $itk_component(fieldmenu) add radiobutton -label "$label" \
1030                    -value $label -variable [itcl::scope _curFldLabel] \
1031                    -selectcolor red \
1032                    -activebackground $itk_option(-plotbackground) \
1033                    -activeforeground $itk_option(-plotforeground) \
1034                    -font "Arial 8" \
1035                    -command [itcl::code $this Combo invoke]
1036                set _fields($fname) [list $label $units $components]
1037                if { $_curFldName == "" } {
1038                    set _curFldName $fname
1039                    set _curFldLabel $label
1040                }
1041            }
1042        }
1043        $itk_component(field) value $_curFldLabel
1044    }
1045    InitSettings -stretchtofit -outline
1046
1047    if { $_reset } {
1048        SendCmd "axis tickpos outside"
1049        #SendCmd "axis lformat all %g"
1050       
1051        foreach axis { x y z } {
1052            if { $axis == "z" } {
1053                set label [$_first hints label]
1054            } else {
1055                set label [$_first hints ${axis}label]
1056            }
1057            if { $label == "" } {
1058                if {$axis == "z"} {
1059                    if { [string match "component*" $_curFldName] } {
1060                        set label [string toupper $axis]
1061                    } else {
1062                        set label $_curFldLabel
1063                    }
1064                } else {
1065                    set label [string toupper $axis]
1066                }
1067            }
1068            # May be a space in the axis label.
1069            SendCmd [list axis name $axis $label]
1070
1071            if {$axis == "z" && [$_first hints ${axis}units] == ""} {
1072                set units [lindex $_fields($_curFldName) 1]
1073            } else {
1074                set units [$_first hints ${axis}units]
1075            }
1076            if { $units != "" } {
1077                # May be a space in the axis units.
1078                SendCmd [list axis units $axis $units]
1079            }
1080        }
1081        #
1082        # Reset the camera and other view parameters
1083        #
1084        ResetAxes
1085        set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1086        $_arcball quaternion $q
1087        if {$_settings(-isheightmap) } {
1088            if { $_view(ortho)} {
1089                SendCmd "camera mode ortho"
1090            } else {
1091                SendCmd "camera mode persp"
1092            }
1093            DoRotate
1094            SendCmd "camera reset"
1095        }
1096        PanCamera
1097        InitSettings -xgrid -ygrid -zgrid \
1098            -axisvisible -axislabels -heightmapscale -field -isheightmap \
1099            -numisolines
1100        if { [array size _fields] < 2 } {
1101            catch {blt::table forget $itk_component(field) $itk_component(field_l)}
1102        }
1103        RequestLegend
1104        set _reset 0
1105    }
1106    global readyForNextFrame
1107    set readyForNextFrame 0;            # Don't advance to the next frame
1108
1109    # Actually write the commands to the server socket.  If it fails, we don't
1110    # care.  We're finished here.
1111    blt::busy hold $itk_component(hull)
1112    StopBufferingCommands
1113    blt::busy release $itk_component(hull)
1114}
1115
1116# ----------------------------------------------------------------------
1117# USAGE: CurrentDatasets ?-all -visible? ?dataobjs?
1118#
1119# Returns a list of server IDs for the current datasets being displayed.  This
1120# is normally a single ID, but it might be a list of IDs if the current data
1121# object has multiple components.
1122# ----------------------------------------------------------------------
1123itcl::body Rappture::VtkHeightmapViewer::CurrentDatasets {args} {
1124    set flag [lindex $args 0]
1125    switch -- $flag {
1126        "-all" {
1127            if { [llength $args] > 1 } {
1128                error "CurrentDatasets: can't specify dataobj after \"-all\""
1129            }
1130            set dlist [get -objects]
1131        }
1132        "-visible" {
1133            if { [llength $args] > 1 } {
1134                set dlist {}
1135                set args [lrange $args 1 end]
1136                foreach dataobj $args {
1137                    if { [info exists _obj2ovride($dataobj-raise)] } {
1138                        lappend dlist $dataobj
1139                    }
1140                }
1141            } else {
1142                set dlist [get -visible]
1143            }
1144        }           
1145        default {
1146            set dlist $args
1147        }
1148    }
1149    set rlist ""
1150    foreach dataobj $dlist {
1151        foreach comp [$dataobj components] {
1152            set tag $dataobj-$comp
1153            if { [info exists _datasets($tag)] && $_datasets($tag) } {
1154                lappend rlist $tag
1155            }
1156        }
1157    }
1158    return $rlist
1159}
1160
1161itcl::body Rappture::VtkHeightmapViewer::CameraReset {} {
1162    array set _view {
1163        qw      0.36
1164        qx      0.25
1165        qy      0.50
1166        qz      0.70
1167        zoom    1.0
1168        xpan    0
1169        ypan    0
1170    }
1171    if { $_first != "" } {
1172        set location [$_first hints camera]
1173        if { $location != "" } {
1174            array set _view $location
1175        }
1176    }
1177    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1178    $_arcball quaternion $q
1179    if {$_settings(-isheightmap) } {
1180        DoRotate
1181    }
1182    SendCmd "camera reset"
1183}
1184
1185# ----------------------------------------------------------------------
1186# USAGE: Zoom in
1187# USAGE: Zoom out
1188# USAGE: Zoom reset
1189#
1190# Called automatically when the user clicks on one of the zoom
1191# controls for this widget.  Changes the zoom for the current view.
1192# ----------------------------------------------------------------------
1193itcl::body Rappture::VtkHeightmapViewer::Zoom {option} {
1194    switch -- $option {
1195        "in" {
1196            set _view(zoom) [expr {$_view(zoom)*1.25}]
1197            SendCmd "camera zoom $_view(zoom)"
1198        }
1199        "out" {
1200            set _view(zoom) [expr {$_view(zoom)*0.8}]
1201            SendCmd "camera zoom $_view(zoom)"
1202        }
1203        "reset" {
1204            array set _view {
1205                zoom    1.0
1206                xpan    0
1207                ypan    0
1208            }
1209            SendCmd "camera reset"
1210        }
1211    }
1212}
1213
1214itcl::body Rappture::VtkHeightmapViewer::PanCamera {} {
1215    set x $_view(xpan)
1216    set y $_view(ypan)
1217    SendCmd "camera pan $x $y"
1218}
1219
1220
1221# ----------------------------------------------------------------------
1222# USAGE: Rotate click <x> <y>
1223# USAGE: Rotate drag <x> <y>
1224# USAGE: Rotate release <x> <y>
1225#
1226# Called automatically when the user clicks/drags/releases in the
1227# plot area.  Moves the plot according to the user's actions.
1228# ----------------------------------------------------------------------
1229itcl::body Rappture::VtkHeightmapViewer::Rotate {option x y} {
1230    switch -- $option {
1231        "click" {
1232            $itk_component(view) configure -cursor fleur
1233            set _click(x) $x
1234            set _click(y) $y
1235        }
1236        "drag" {
1237            if {[array size _click] == 0} {
1238                Rotate click $x $y
1239            } else {
1240                set w [winfo width $itk_component(view)]
1241                set h [winfo height $itk_component(view)]
1242                if {$w <= 0 || $h <= 0} {
1243                    return
1244                }
1245
1246                if {[catch {
1247                    # this fails sometimes for no apparent reason
1248                    set dx [expr {double($x-$_click(x))/$w}]
1249                    set dy [expr {double($y-$_click(y))/$h}]
1250                }]} {
1251                    return
1252                }
1253                if { $dx == 0 && $dy == 0 } {
1254                    return
1255                }
1256                set q [$_arcball rotate $x $y $_click(x) $_click(y)]
1257                EventuallyRotate $q
1258                set _click(x) $x
1259                set _click(y) $y
1260            }
1261        }
1262        "release" {
1263            Rotate drag $x $y
1264            $itk_component(view) configure -cursor ""
1265            catch {unset _click}
1266        }
1267        default {
1268            error "bad option \"$option\": should be click, drag, release"
1269        }
1270    }
1271}
1272
1273itcl::body Rappture::VtkHeightmapViewer::Pick {x y} {
1274    foreach tag [CurrentDatasets -visible] {
1275        SendCmd "dataset getscalar pixel $x $y $tag"
1276    }
1277}
1278
1279# ----------------------------------------------------------------------
1280# USAGE: $this Pan click x y
1281#        $this Pan drag x y
1282#        $this Pan release x y
1283#
1284# Called automatically when the user clicks on one of the zoom
1285# controls for this widget.  Changes the zoom for the current view.
1286# ----------------------------------------------------------------------
1287itcl::body Rappture::VtkHeightmapViewer::Pan {option x y} {
1288    switch -- $option {
1289        "set" {
1290            set w [winfo width $itk_component(view)]
1291            set h [winfo height $itk_component(view)]
1292            set x [expr $x / double($w)]
1293            set y [expr $y / double($h)]
1294            set _view(xpan) [expr $_view(xpan) + $x]
1295            set _view(ypan) [expr $_view(ypan) + $y]
1296            PanCamera
1297            return
1298        }
1299        "click" {
1300            set _click(x) $x
1301            set _click(y) $y
1302            $itk_component(view) configure -cursor hand1
1303        }
1304        "drag" {
1305            if { ![info exists _click(x)] } {
1306                set _click(x) $x
1307            }
1308            if { ![info exists _click(y)] } {
1309                set _click(y) $y
1310            }
1311            set w [winfo width $itk_component(view)]
1312            set h [winfo height $itk_component(view)]
1313            set dx [expr ($_click(x) - $x)/double($w)]
1314            set dy [expr ($_click(y) - $y)/double($h)]
1315            set _click(x) $x
1316            set _click(y) $y
1317            set _view(xpan) [expr $_view(xpan) - $dx]
1318            set _view(ypan) [expr $_view(ypan) - $dy]
1319            PanCamera
1320        }
1321        "release" {
1322            Pan drag $x $y
1323            $itk_component(view) configure -cursor ""
1324        }
1325        default {
1326            error "unknown option \"$option\": should set, click, drag, or release"
1327        }
1328    }
1329}
1330
1331# ----------------------------------------------------------------------
1332# USAGE: InitSettings <what> ?<value>?
1333#
1334# Used internally to update rendering settings whenever parameters
1335# change in the popup settings panel.  Sends the new settings off
1336# to the back end.
1337# ----------------------------------------------------------------------
1338itcl::body Rappture::VtkHeightmapViewer::InitSettings { args } {
1339    foreach spec $args {
1340        if { [info exists _settings($_first${spec})] } {
1341            # Reset global setting with dataobj specific setting
1342            set _settings($spec) $_settings($_first${spec})
1343        }
1344        AdjustSetting $spec
1345    }
1346}
1347
1348#
1349# AdjustSetting --
1350#
1351#       Changes/updates a specific setting in the widget.  There are
1352#       usually user-setable option.  Commands are sent to the render
1353#       server.
1354#
1355itcl::body Rappture::VtkHeightmapViewer::AdjustSetting {what {value ""}} {
1356    if { $_beforeConnect } {
1357        return
1358    }
1359    switch -- $what {
1360        "-axisflymode" {
1361            set mode [$itk_component(axisflymode) value]
1362            set mode [$itk_component(axisflymode) translate $mode]
1363            set _settings($what) $mode
1364            SendCmd "axis flymode $mode"
1365        }
1366        "-axislabels" {
1367            set bool $_settings($what)
1368            SendCmd "axis labels all $bool"
1369        }
1370        "-axisminorticks" {
1371            set bool $_settings($what)
1372            SendCmd "axis minticks all $bool"
1373        }
1374        "-axisvisible" {
1375            set bool $_settings($what)
1376            SendCmd "axis visible all $bool"
1377        }
1378        "-xgrid" - "-ygrid" - "-zgrid" {
1379            set axis [string tolower [string range $what 1 1]]
1380            set bool $_settings($what)
1381            SendCmd "axis grid $axis $bool"
1382        }
1383        "-background" {
1384            set bg [$itk_component(background) value]
1385            array set fgcolors {
1386                "black" "white"
1387                "white" "black"
1388                "grey"  "black"
1389            }
1390            set fg $fgcolors($bg)
1391            configure -plotbackground $bg -plotforeground $fg
1392            $itk_component(view) delete "legend"
1393            SendCmd "screen bgcolor [Color2RGB $bg]"
1394            SendCmd "outline color [Color2RGB $fg]"
1395            SendCmd "axis color all [Color2RGB $fg]"
1396            DrawLegend
1397        }
1398        "-colormap" {
1399            set _changed($what) 1
1400            StartBufferingCommands
1401            set color [$itk_component(colormap) value]
1402            set _settings($what) $color
1403            if { $color == "none" } {
1404                if { $_settings(-colormapvisible) } {
1405                    SendCmd "heightmap surface 0"
1406                    set _settings(-colormapvisible) 0
1407                }
1408            } else {
1409                if { !$_settings(-colormapvisible) } {
1410                    SendCmd "heightmap surface 1"
1411                    set _settings(-colormapvisible) 1
1412                }
1413                SetCurrentColormap $color
1414                if {$_settings(-colormapdiscrete)} {
1415                    set numColors [expr $_settings(-numisolines) + 1]
1416                    SendCmd "colormap res $numColors $color"
1417                }
1418            }
1419            StopBufferingCommands
1420            EventuallyRequestLegend
1421        }
1422        "-colormapvisible" {
1423            set bool $_settings($what)
1424            SendCmd "heightmap surface $bool"
1425        }
1426        "-colormapdiscrete" {
1427            set bool $_settings($what)
1428            set numColors [expr $_settings(-numisolines) + 1]
1429            StartBufferingCommands
1430            if {$bool} {
1431                SendCmd "colormap res $numColors"
1432                # Discrete colormap requires preinterp on
1433                SendCmd "heightmap preinterp on"
1434            } else {
1435                SendCmd "colormap res default"
1436                # FIXME: add setting for preinterp (default on)
1437                SendCmd "heightmap preinterp on"
1438            }
1439            StopBufferingCommands
1440            EventuallyRequestLegend
1441        }
1442        "-edges" {
1443            set bool $_settings($what)
1444            SendCmd "heightmap edges $bool"
1445        }
1446        "-field" {
1447            set label [$itk_component(field) value]
1448            set fname [$itk_component(field) translate $label]
1449            set _settings($what) $fname
1450            if { [info exists _fields($fname)] } {
1451                foreach { label units components } $_fields($fname) break
1452                if { $components > 1 } {
1453                    set _colorMode vmag
1454                } else {
1455                    set _colorMode scalar
1456                }
1457                set _curFldName $fname
1458                set _curFldLabel $label
1459            } else {
1460                puts stderr "unknown field \"$fname\""
1461                return
1462            }
1463            set label [$_first hints label]
1464            if { $label == "" } {
1465                if { [string match "component*" $_curFldName] } {
1466                    set label Z
1467                } else {
1468                    set label $_curFldLabel
1469                }
1470            }
1471            # May be a space in the axis label.
1472            SendCmd [list axis name z $label]
1473
1474            if { [$_first hints zunits] == "" } {
1475                set units [lindex $_fields($_curFldName) 1]
1476            } else {
1477                set units [$_first hints zunits]
1478            }
1479            if { $units != "" } {
1480                # May be a space in the axis units.
1481                SendCmd [list axis units z $units]
1482            }
1483            # Get the new limits because the field changed.
1484            ResetAxes
1485            SendCmd "dataset scalar $_curFldName"
1486            SendCmd "heightmap colormode scalar $_curFldName"
1487            Zoom reset
1488            UpdateContourList
1489            DrawLegend
1490        }
1491        "-heightmapscale" {
1492            if { $_settings(-isheightmap) } {
1493                set scale [GetHeightmapScale]
1494                # Have to set the datasets individually because we are
1495                # tracking them in _comp2scale.
1496                foreach dataset [CurrentDatasets -all] {
1497                    SendCmd "heightmap heightscale $scale $dataset"
1498                    set _comp2scale($dataset) $scale
1499                }
1500                ResetAxes
1501            }
1502        }
1503        "-isheightmap" {
1504            set bool $_settings($what)
1505            set c $itk_component(view)
1506            StartBufferingCommands
1507            # Fix heightmap scale: 0 for contours, 1 for heightmaps.
1508            if { $bool } {
1509                set _settings(-heightmapscale) 50
1510                set _settings(-opacity) $_settings(-saveopacity)
1511                set _settings(-lighting) $_settings(-savelighting)
1512                set _settings(-outline) 0
1513            } else {
1514                set _settings(-heightmapscale) 0
1515                set _settings(-lighting) 0
1516                set _settings(-opacity) 100
1517                set _settings(-outline)  $_settings(-saveoutline)
1518            }
1519            InitSettings -lighting -opacity -outline
1520            set scale [GetHeightmapScale]
1521            # Have to set the datasets individually because we are
1522            # tracking them in _comp2scale.
1523            foreach dataset [CurrentDatasets -all] {
1524                SendCmd "heightmap heightscale $scale $dataset"
1525                set _comp2scale($dataset) $scale
1526            }
1527            if { $bool } {
1528                $itk_component(lighting) configure -state normal
1529                $itk_component(opacity) configure -state normal
1530                $itk_component(scale) configure -state normal
1531                $itk_component(opacity_l) configure -state normal
1532                $itk_component(scale_l) configure -state normal
1533                $itk_component(outline) configure -state disabled
1534                if {$_view(ortho)} {
1535                    SendCmd "camera mode ortho"
1536                } else {
1537                    SendCmd "camera mode persp"
1538                }
1539            } else {
1540                $itk_component(lighting) configure -state disabled
1541                $itk_component(opacity) configure -state disabled
1542                $itk_component(scale) configure -state disabled
1543                $itk_component(opacity_l) configure -state disabled
1544                $itk_component(scale_l) configure -state disabled
1545                $itk_component(outline) configure -state normal
1546                SendCmd "camera mode image"
1547            }
1548            if {$_settings(-stretchtofit)} {
1549                if {$scale == 0} {
1550                    SendCmd "camera aspect window"
1551                } else {
1552                    SendCmd "camera aspect square"
1553                }
1554            }
1555            ResetAxes
1556            if { $bool } {
1557                set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
1558                $_arcball quaternion $q
1559                SendCmd "camera orient $q"
1560            } else {
1561                bind $c <ButtonPress-1> {}
1562                bind $c <B1-Motion> {}
1563                bind $c <ButtonRelease-1> {}
1564            }
1565            Zoom reset
1566            # Fix the mouse bindings for rotation/panning and the
1567            # camera mode. Ideally we'd create a bindtag for these.
1568            if { $bool } {
1569                # Bindings for rotation via mouse
1570                bind $c <ButtonPress-1> \
1571                    [itcl::code $this Rotate click %x %y]
1572                bind $c <B1-Motion> \
1573                    [itcl::code $this Rotate drag %x %y]
1574                bind $c <ButtonRelease-1> \
1575                    [itcl::code $this Rotate release %x %y]
1576            }
1577            StopBufferingCommands
1578        }
1579        "-isolinecolor" {
1580            set color [$itk_component(isolinecolor) value]
1581            if { $color == "none" } {
1582                if { $_settings(-isolinesvisible) } {
1583                    SendCmd "heightmap isolines 0"
1584                    set _settings(-isolinesvisible) 0
1585                }
1586            } else {
1587                if { !$_settings(-isolinesvisible) } {
1588                    SendCmd "heightmap isolines 1"
1589                    set _settings(-isolinesvisible) 1
1590                }
1591                SendCmd "heightmap isolinecolor [Color2RGB $color]"
1592            }
1593            DrawLegend
1594        }
1595        "-isolinesvisible" {
1596            set bool $_settings($what)
1597            SendCmd "heightmap isolines $bool"
1598            DrawLegend
1599        }
1600        "-legendvisible" {
1601            if { !$_settings($what) } {
1602                $itk_component(view) delete legend
1603            }
1604            DrawLegend
1605        }
1606        "-lighting" {
1607            if { $_settings(-isheightmap) } {
1608                set _settings(-savelighting) $_settings($what)
1609                set bool $_settings($what)
1610                SendCmd "heightmap lighting $bool"
1611            } else {
1612                SendCmd "heightmap lighting 0"
1613            }
1614        }
1615        "-numisolines" {
1616            set _settings($what) [$itk_component(numisolines) value]
1617            set _currentNumIsolines $_settings($what)
1618            UpdateContourList
1619            set _changed($what) 1
1620            SendCmd "heightmap contourlist [list $_contourList]"
1621            if {$_settings(-colormapdiscrete)} {
1622                set numColors [expr $_settings($what) + 1]
1623                SendCmd "colormap res $numColors"
1624                EventuallyRequestLegend
1625            } else {
1626                DrawLegend
1627            }
1628        }
1629        "-opacity" {
1630            set _changed($what) 1
1631            set val [expr $_settings($what) * 0.01]
1632            if { $_settings(-isheightmap) } {
1633                set _settings(-saveopacity) $_settings($what)
1634                SendCmd "heightmap opacity $val"
1635            } else {
1636                SendCmd "heightmap opacity 1.0"
1637            }
1638        }
1639        "-outline" {
1640            if { $_settings(-isheightmap) } {
1641                SendCmd "outline visible 0"
1642            } else {
1643                set _settings(-saveoutline) $_settings($what)
1644                set bool $_settings($what)
1645                SendCmd "outline visible $bool"
1646            }
1647        }
1648        "-stretchtofit" {
1649            set bool $_settings($what)
1650            if { $bool } {
1651                set heightScale [GetHeightmapScale]
1652                if {$heightScale == 0} {
1653                    SendCmd "camera aspect window"
1654                } else {
1655                    SendCmd "camera aspect square"
1656                }
1657            } else {
1658                SendCmd "camera aspect native"
1659            }
1660            Zoom reset
1661        }
1662        "-wireframe" {
1663            set bool $_settings($what)
1664            SendCmd "heightmap wireframe $bool"
1665        }
1666        default {
1667            error "don't know how to fix $what"
1668        }
1669    }
1670}
1671
1672#
1673# RequestLegend --
1674#
1675#       Request a new legend from the server.  The size of the legend
1676#       is determined from the height of the canvas. 
1677#
1678# This should be called when
1679#       1.  A new current colormap is set.
1680#       2.  Window is resized.
1681#       3.  The limits of the data have changed.  (Just need a redraw).
1682#       4.  Number of isolines have changed. (Just need a redraw).
1683#       5.  Legend becomes visible (Just need a redraw).
1684#
1685itcl::body Rappture::VtkHeightmapViewer::RequestLegend {} {
1686    set _legendPending 0
1687    set font "Arial 8"
1688    set w 12
1689    set lineht [font metrics $font -linespace]
1690    # color ramp height = (canvas height) - (min and max value lines) - 2
1691    set h [expr {$_height - 2 * ($lineht + 2)}]
1692    set _legendHeight $h
1693
1694    set fname $_curFldName
1695    if { [string match "component*" $fname] } {
1696        set title ""
1697    } else {
1698        if { [info exists _fields($fname)] } {
1699            foreach { title units } $_fields($fname) break
1700            if { $units != "" } {
1701                set title [format "%s (%s)" $title $units]
1702            }
1703        } else {
1704            set title $fname
1705        }
1706    }
1707    # If there's a title too, substract one more line
1708    if { $title != "" } {
1709        incr h -$lineht
1710    }
1711    if { $h < 1 } {
1712        return
1713    }
1714    # Set the legend on the first heightmap dataset.
1715    if { $_currentColormap != ""  } {
1716        set cmap $_currentColormap
1717        SendCmd "legend $cmap scalar $_curFldName {} $w $h 0"
1718    }
1719}
1720
1721#
1722# ResetAxes --
1723#
1724#       Set axis z bounds and range
1725#
1726itcl::body Rappture::VtkHeightmapViewer::ResetAxes {} {
1727    if { ![info exists _limits($_curFldName)]} {
1728        SendCmd "dataset maprange all"
1729        SendCmd "axis autorange z on"
1730        SendCmd "axis autobounds z on"
1731        return
1732    }
1733    foreach { xmin xmax } $_limits(x) break
1734    foreach { ymin ymax } $_limits(y) break
1735    foreach { vmin vmax } $_limits($_curFldName) break
1736
1737    global tcl_precision
1738    set tcl_precision 17
1739    set xr [expr $xmax - $xmin]
1740    set yr [expr $ymax - $ymin]
1741    set vr [expr $vmax - $vmin]
1742    set r  [expr ($yr > $xr) ? $yr : $xr]
1743    if { $vr < 1.0e-17 } {
1744        set dataScale 1.0
1745    } else {
1746        set dataScale [expr $r / $vr]
1747    }
1748    set heightScale [GetHeightmapScale]
1749    set bmin [expr $heightScale * $dataScale * $vmin]
1750    set bmax [expr $heightScale * $dataScale * $vmax]
1751    if {$heightScale > 0} {
1752        set zpos [expr - $bmin]
1753        SendCmd "heightmap pos 0 0 $zpos"
1754    } else {
1755        SendCmd "heightmap pos 0 0 0"
1756    }
1757    set bmax [expr $bmax - $bmin]
1758    set bmin 0
1759    SendCmd "dataset maprange explicit $_limits($_curFldName) $_curFldName"
1760    SendCmd "axis bounds z $bmin $bmax"
1761    SendCmd "axis range z $_limits($_curFldName)"
1762}
1763
1764#
1765# SetCurrentColormap --
1766#
1767itcl::body Rappture::VtkHeightmapViewer::SetCurrentColormap { name } {
1768    # Keep track of the colormaps that we build.
1769    if { $name != "none" && ![info exists _colormaps($name)] } {
1770        BuildColormap $name
1771        set _colormaps($name) 1
1772    }
1773    set _currentColormap $name
1774    SendCmd "heightmap colormap $_currentColormap"
1775}
1776
1777
1778#
1779# BuildColormap --
1780#
1781#       Build the designated colormap on the server.
1782#
1783itcl::body Rappture::VtkHeightmapViewer::BuildColormap { name } {
1784    set cmap [ColorsToColormap $name]
1785    if { [llength $cmap] == 0 } {
1786        set cmap "0.0 0.0 0.0 0.0 1.0 1.0 1.0 1.0"
1787    }
1788    set wmap "0.0 1.0 1.0 1.0"
1789    SendCmd "colormap add $name { $cmap } { $wmap }"
1790}
1791
1792# ----------------------------------------------------------------------
1793# CONFIGURATION OPTION: -mode
1794# ----------------------------------------------------------------------
1795itcl::configbody Rappture::VtkHeightmapViewer::mode {
1796    switch -- $itk_option(-mode) {
1797        "heightmap" {
1798            set _settings(-isheightmap) 1
1799        }
1800        "contour" {
1801            set _settings(-isheightmap) 0
1802        }
1803        default {
1804            error "unknown mode settings \"$itk_option(-mode)\""
1805        }
1806    }
1807    if { !$_reset } {
1808        AdjustSetting -isheightmap
1809    }
1810}
1811
1812# ----------------------------------------------------------------------
1813# CONFIGURATION OPTION: -plotbackground
1814# ----------------------------------------------------------------------
1815itcl::configbody Rappture::VtkHeightmapViewer::plotbackground {
1816    if { [isconnected] } {
1817        set rgb [Color2RGB $itk_option(-plotbackground)]
1818        if { !$_reset } {
1819            SendCmd "screen bgcolor $rgb"
1820        }
1821        $itk_component(view) configure -background $itk_option(-plotbackground)
1822    }
1823}
1824
1825# ----------------------------------------------------------------------
1826# CONFIGURATION OPTION: -plotforeground
1827# ----------------------------------------------------------------------
1828itcl::configbody Rappture::VtkHeightmapViewer::plotforeground {
1829    if { [isconnected] } {
1830        set rgb [Color2RGB $itk_option(-plotforeground)]
1831        if { !$_reset } {
1832            SendCmd "outline color $rgb"
1833            SendCmd "axis color all $rgb"
1834        }
1835    }
1836}
1837
1838itcl::body Rappture::VtkHeightmapViewer::BuildContourTab {} {
1839
1840    set fg [option get $itk_component(hull) font Font]
1841    #set bfg [option get $itk_component(hull) boldFont Font]
1842
1843    set inner [$itk_component(main) insert end \
1844        -title "Contour/Surface Settings" \
1845        -icon [Rappture::icon contour2]]
1846    $inner configure -borderwidth 4
1847
1848    checkbutton $inner.legend \
1849        -text "Legend" \
1850        -variable [itcl::scope _settings(-legendvisible)] \
1851        -command [itcl::code $this AdjustSetting -legendvisible] \
1852        -font "Arial 9"
1853
1854    checkbutton $inner.wireframe \
1855        -text "Wireframe" \
1856        -variable [itcl::scope _settings(-wireframe)] \
1857        -command [itcl::code $this AdjustSetting -wireframe] \
1858        -font "Arial 9"
1859
1860    itk_component add lighting {
1861        checkbutton $inner.lighting \
1862            -text "Enable Lighting" \
1863            -variable [itcl::scope _settings(-lighting)] \
1864            -command [itcl::code $this AdjustSetting -lighting] \
1865            -font "Arial 9"
1866    } {
1867        ignore -font
1868    }
1869    checkbutton $inner.edges \
1870        -text "Edges" \
1871        -variable [itcl::scope _settings(-edges)] \
1872        -command [itcl::code $this AdjustSetting -edges] \
1873        -font "Arial 9"
1874
1875    itk_component add outline {
1876        checkbutton $inner.outline \
1877            -text "Outline" \
1878            -variable [itcl::scope _settings(-outline)] \
1879            -command [itcl::code $this AdjustSetting -outline] \
1880            -font "Arial 9"
1881    } {
1882        ignore -font
1883    }
1884    checkbutton $inner.stretch \
1885        -text "Stretch to fit" \
1886        -variable [itcl::scope _settings(-stretchtofit)] \
1887        -command [itcl::code $this AdjustSetting -stretchtofit] \
1888        -font "Arial 9"
1889
1890    checkbutton $inner.isolines \
1891        -text "Isolines" \
1892        -variable [itcl::scope _settings(-isolinesvisible)] \
1893        -command [itcl::code $this AdjustSetting -isolinesvisible] \
1894        -font "Arial 9"
1895
1896    checkbutton $inner.colormapDiscrete \
1897        -text "Discrete Colormap" \
1898        -variable [itcl::scope _settings(-colormapdiscrete)] \
1899        -command [itcl::code $this AdjustSetting -colormapdiscrete] \
1900        -font "Arial 9"
1901
1902    itk_component add field_l {
1903        label $inner.field_l -text "Field" -font "Arial 9"
1904    } {
1905        ignore -font
1906    }
1907    itk_component add field {
1908        Rappture::Combobox $inner.field -width 10 -editable no
1909    }
1910    bind $inner.field <<Value>> \
1911        [itcl::code $this AdjustSetting -field]
1912
1913    label $inner.colormap_l -text "Colormap" -font "Arial 9"
1914    itk_component add colormap {
1915        Rappture::Combobox $inner.colormap -width 10 -editable no
1916    }
1917    $inner.colormap choices insert end [GetColormapList -includeNone]
1918    $itk_component(colormap) value $_settings(-colormap)
1919    bind $inner.colormap <<Value>> \
1920        [itcl::code $this AdjustSetting -colormap]
1921
1922    label $inner.isolinecolor_l -text "Isolines Color" -font "Arial 9"
1923    itk_component add isolinecolor {
1924        Rappture::Combobox $inner.isolinecolor -width 10 -editable no
1925    }
1926    $inner.isolinecolor choices insert end \
1927        "black"              "black"            \
1928        "blue"               "blue"             \
1929        "cyan"               "cyan"             \
1930        "green"              "green"            \
1931        "grey"               "grey"             \
1932        "magenta"            "magenta"          \
1933        "orange"             "orange"           \
1934        "red"                "red"              \
1935        "white"              "white"            \
1936        "none"               "none"
1937
1938    $itk_component(isolinecolor) value $_settings(-isolinecolor)
1939    bind $inner.isolinecolor <<Value>> \
1940        [itcl::code $this AdjustSetting -isolinecolor]
1941
1942    label $inner.background_l -text "Background Color" -font "Arial 9"
1943    itk_component add background {
1944        Rappture::Combobox $inner.background -width 10 -editable no
1945    }
1946    $inner.background choices insert end \
1947        "black"              "black"            \
1948        "white"              "white"            \
1949        "grey"               "grey"             
1950
1951    $itk_component(background) value "white"
1952    bind $inner.background <<Value>> \
1953        [itcl::code $this AdjustSetting -background]
1954
1955    itk_component add opacity_l {
1956        label $inner.opacity_l -text "Opacity" -font "Arial 9"
1957    } {
1958        ignore -font
1959    }
1960    itk_component add opacity {
1961        ::scale $inner.opacity -from 0 -to 100 -orient horizontal \
1962            -variable [itcl::scope _settings(-opacity)] \
1963            -showvalue off \
1964            -command [itcl::code $this AdjustSetting -opacity]
1965    }
1966    itk_component add scale_l {
1967        label $inner.scale_l -text "Scale" -font "Arial 9"
1968    } {
1969        ignore -font
1970    }
1971    itk_component add scale {
1972        ::scale $inner.scale -from 0 -to 100 -orient horizontal \
1973            -variable [itcl::scope _settings(-heightmapscale)] \
1974            -showvalue off \
1975            -command [itcl::code $this AdjustSetting -heightmapscale]
1976    }
1977    label $inner.numisolines_l -text "Number of Isolines" -font "Arial 9"
1978    itk_component add numisolines {
1979        Rappture::Spinint $inner.numisolines \
1980            -min 0 -max 50 -font "arial 9"
1981    }
1982    $itk_component(numisolines) value $_settings(-numisolines)
1983    bind $itk_component(numisolines) <<Value>> \
1984        [itcl::code $this AdjustSetting -numisolines]
1985
1986    frame $inner.separator1 -height 2 -relief sunken -bd 1
1987    frame $inner.separator2 -height 2 -relief sunken -bd 1
1988
1989    blt::table $inner \
1990        0,0 $inner.field_l -anchor w -pady 2 \
1991        0,1 $inner.field -anchor w -pady 2 -fill x \
1992        1,0 $inner.colormap_l -anchor w -pady 2  \
1993        1,1 $inner.colormap   -anchor w -pady 2 -fill x  \
1994        2,0 $inner.isolinecolor_l  -anchor w -pady 2  \
1995        2,1 $inner.isolinecolor    -anchor w -pady 2 -fill x  \
1996        3,0 $inner.background_l -anchor w -pady 2 \
1997        3,1 $inner.background -anchor w -pady 2  -fill x \
1998        4,0 $inner.numisolines_l -anchor w -pady 2 \
1999        4,1 $inner.numisolines -anchor w -pady 2 \
2000        5,0 $inner.stretch    -anchor w -pady 2 -cspan 2 \
2001        6,0 $inner.edges      -anchor w -pady 2 -cspan 2 \
2002        7,0 $inner.legend     -anchor w -pady 2 -cspan 2 \
2003        8,0 $inner.colormapDiscrete -anchor w -pady 2 -cspan 2 \
2004        9,0 $inner.wireframe  -anchor w -pady 2 -cspan 2\
2005        10,0 $inner.isolines   -anchor w -pady 2 -cspan 2 \
2006        11,0 $inner.separator1 -padx 2 -fill x -cspan 2 \
2007        12,0 $inner.outline    -anchor w -pady 2 -cspan 2 \
2008        13,0 $inner.separator2 -padx 2 -fill x -cspan 2 \
2009        14,0 $inner.lighting   -anchor w -pady 2 -cspan 2 \
2010        15,0 $inner.opacity_l -anchor w -pady 2 \
2011        15,1 $inner.opacity   -fill x   -pady 2 \
2012        16,0 $inner.scale_l   -anchor w -pady 2 -cspan 2 \
2013        16,1 $inner.scale     -fill x   -pady 2 -cspan 2 \
2014
2015    blt::table configure $inner r* c* -resize none
2016    blt::table configure $inner r17 c1 -resize expand
2017}
2018
2019itcl::body Rappture::VtkHeightmapViewer::BuildAxisTab {} {
2020
2021    set fg [option get $itk_component(hull) font Font]
2022    #set bfg [option get $itk_component(hull) boldFont Font]
2023
2024    set inner [$itk_component(main) insert end \
2025        -title "Axis Settings" \
2026        -icon [Rappture::icon axis2]]
2027    $inner configure -borderwidth 4
2028
2029    checkbutton $inner.visible \
2030        -text "Axes" \
2031        -variable [itcl::scope _settings(-axisvisible)] \
2032        -command [itcl::code $this AdjustSetting -axisvisible] \
2033        -font "Arial 9"
2034    checkbutton $inner.labels \
2035        -text "Axis Labels" \
2036        -variable [itcl::scope _settings(-axislabels)] \
2037        -command [itcl::code $this AdjustSetting -axislabels] \
2038        -font "Arial 9"
2039    label $inner.grid_l -text "Grid" -font "Arial 9"
2040    checkbutton $inner.xgrid \
2041        -text "X" \
2042        -variable [itcl::scope _settings(-xgrid)] \
2043        -command [itcl::code $this AdjustSetting -xgrid] \
2044        -font "Arial 9"
2045    checkbutton $inner.ygrid \
2046        -text "Y" \
2047        -variable [itcl::scope _settings(-ygrid)] \
2048        -command [itcl::code $this AdjustSetting -ygrid] \
2049        -font "Arial 9"
2050    checkbutton $inner.zgrid \
2051        -text "Z" \
2052        -variable [itcl::scope _settings(-zgrid)] \
2053        -command [itcl::code $this AdjustSetting -zgrid] \
2054        -font "Arial 9"
2055    checkbutton $inner.minorticks \
2056        -text "Minor Ticks" \
2057        -variable [itcl::scope _settings(-axisminorticks)] \
2058        -command [itcl::code $this AdjustSetting -axisminorticks] \
2059        -font "Arial 9"
2060
2061    label $inner.mode_l -text "Mode" -font "Arial 9"
2062
2063    itk_component add axisflymode {
2064        Rappture::Combobox $inner.mode -width 10 -editable no
2065    }
2066    $inner.mode choices insert end \
2067        "static_triad"    "static" \
2068        "closest_triad"   "closest" \
2069        "furthest_triad"  "farthest" \
2070        "outer_edges"     "outer"         
2071    $itk_component(axisflymode) value $_settings(-axisflymode)
2072    bind $inner.mode <<Value>> [itcl::code $this AdjustSetting -axisflymode]
2073
2074    blt::table $inner \
2075        0,0 $inner.visible -anchor w -cspan 4 \
2076        1,0 $inner.labels  -anchor w -cspan 4 \
2077        2,0 $inner.minorticks  -anchor w -cspan 4 \
2078        4,0 $inner.grid_l  -anchor w \
2079        4,1 $inner.xgrid   -anchor w \
2080        4,2 $inner.ygrid   -anchor w \
2081        4,3 $inner.zgrid   -anchor w \
2082        5,0 $inner.mode_l  -anchor w -padx { 2 0 } \
2083        5,1 $inner.mode    -fill x -cspan 3
2084
2085    blt::table configure $inner r* c* -resize none
2086    blt::table configure $inner r7 c6 -resize expand
2087    blt::table configure $inner r3 -height 0.125i
2088}
2089
2090
2091itcl::body Rappture::VtkHeightmapViewer::BuildCameraTab {} {
2092    set inner [$itk_component(main) insert end \
2093        -title "Camera Settings" \
2094        -icon [Rappture::icon camera]]
2095    $inner configure -borderwidth 4
2096
2097    label $inner.view_l -text "view" -font "Arial 9"
2098    set f [frame $inner.view]
2099    foreach side { front back left right top bottom } {
2100        button $f.$side  -image [Rappture::icon view$side] \
2101            -command [itcl::code $this SetOrientation $side]
2102        Rappture::Tooltip::for $f.$side "Change the view to $side"
2103        pack $f.$side -side left
2104    }
2105
2106    blt::table $inner \
2107        0,0 $inner.view_l -anchor e -pady 2 \
2108        0,1 $inner.view -anchor w -pady 2
2109
2110    set labels { qx qy qz qw xpan ypan zoom }
2111    set row 1
2112    foreach tag $labels {
2113        label $inner.${tag}label -text $tag -font "Arial 9"
2114        entry $inner.${tag} -font "Arial 9"  -bg white \
2115            -textvariable [itcl::scope _view($tag)]
2116        bind $inner.${tag} <Return> \
2117            [itcl::code $this camera set ${tag}]
2118        bind $inner.${tag} <KP_Enter> \
2119            [itcl::code $this camera set ${tag}]
2120        blt::table $inner \
2121            $row,0 $inner.${tag}label -anchor e -pady 2 \
2122            $row,1 $inner.${tag} -anchor w -pady 2
2123        blt::table configure $inner r$row -resize none
2124        incr row
2125    }
2126    checkbutton $inner.ortho \
2127        -text "Orthographic Projection" \
2128        -variable [itcl::scope _view(ortho)] \
2129        -command [itcl::code $this camera set ortho] \
2130        -font "Arial 9"
2131    blt::table $inner \
2132            $row,0 $inner.ortho -cspan 2 -anchor w -pady 2
2133    blt::table configure $inner r$row -resize none
2134    incr row
2135
2136    blt::table configure $inner c* r* -resize none
2137    blt::table configure $inner c2 -resize expand
2138    blt::table configure $inner r$row -resize expand
2139}
2140
2141#
2142#  camera --
2143#
2144itcl::body Rappture::VtkHeightmapViewer::camera {option args} {
2145    switch -- $option {
2146        "show" {
2147            puts [array get _view]
2148        }
2149        "set" {
2150            set who [lindex $args 0]
2151            set x $_view($who)
2152            set code [catch { string is double $x } result]
2153            if { $code != 0 || !$result } {
2154                return
2155            }
2156            switch -- $who {
2157                "ortho" {
2158                    if {$_view(ortho)} {
2159                        SendCmd "camera mode ortho"
2160                    } else {
2161                        SendCmd "camera mode persp"
2162                    }
2163                }
2164                "xpan" - "ypan" {
2165                    PanCamera
2166                }
2167                "qx" - "qy" - "qz" - "qw" {
2168                    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2169                    $_arcball quaternion $q
2170                    EventuallyRotate $q
2171                }
2172                "zoom" {
2173                    SendCmd "camera zoom $_view(zoom)"
2174                }
2175            }
2176        }
2177    }
2178}
2179
2180itcl::body Rappture::VtkHeightmapViewer::GetVtkData { args } {
2181    set bytes ""
2182    foreach dataobj [get] {
2183        foreach comp [$dataobj components] {
2184            set tag $dataobj-$comp
2185            set contents [$dataobj vtkdata $comp]
2186            append bytes "$contents\n"
2187        }
2188    }
2189    return [list .vtk $bytes]
2190}
2191
2192itcl::body Rappture::VtkHeightmapViewer::GetImage { args } {
2193    if { [image width $_image(download)] > 0 &&
2194         [image height $_image(download)] > 0 } {
2195        set bytes [$_image(download) data -format "jpeg -quality 100"]
2196        set bytes [Rappture::encoding::decode -as b64 $bytes]
2197        return [list .jpg $bytes]
2198    }
2199    return ""
2200}
2201
2202itcl::body Rappture::VtkHeightmapViewer::BuildDownloadPopup { popup command } {
2203    Rappture::Balloon $popup \
2204        -title "[Rappture::filexfer::label downloadWord] as..."
2205    set inner [$popup component inner]
2206    label $inner.summary -text "" -anchor w
2207    radiobutton $inner.vtk_button -text "VTK data file" \
2208        -variable [itcl::scope _downloadPopup(format)] \
2209        -font "Arial 9 " \
2210        -value vtk 
2211    Rappture::Tooltip::for $inner.vtk_button "Save as VTK data file."
2212    radiobutton $inner.image_button -text "Image File" \
2213        -variable [itcl::scope _downloadPopup(format)] \
2214        -font "Arial 9 " \
2215        -value image
2216    Rappture::Tooltip::for $inner.image_button \
2217        "Save as digital image."
2218
2219    button $inner.ok -text "Save" \
2220        -highlightthickness 0 -pady 2 -padx 3 \
2221        -command $command \
2222        -compound left \
2223        -image [Rappture::icon download]
2224
2225    button $inner.cancel -text "Cancel" \
2226        -highlightthickness 0 -pady 2 -padx 3 \
2227        -command [list $popup deactivate] \
2228        -compound left \
2229        -image [Rappture::icon cancel]
2230
2231    blt::table $inner \
2232        0,0 $inner.summary -cspan 2  \
2233        1,0 $inner.vtk_button -anchor w -cspan 2 -padx { 4 0 } \
2234        2,0 $inner.image_button -anchor w -cspan 2 -padx { 4 0 } \
2235        4,1 $inner.cancel -width .9i -fill y \
2236        4,0 $inner.ok -padx 2 -width .9i -fill y
2237    blt::table configure $inner r3 -height 4
2238    blt::table configure $inner r4 -pady 4
2239    raise $inner.image_button
2240    $inner.vtk_button invoke
2241    return $inner
2242}
2243
2244#
2245# SetObjectStyle --
2246#
2247#       Set the style of the heightmap/contour object.  This gets calls
2248#       for each dataset once as it is loaded.  It can overridden by
2249#       the user controls.
2250#
2251#
2252itcl::body Rappture::VtkHeightmapViewer::SetObjectStyle { dataobj comp } {
2253    # Parse style string.
2254    set tag $dataobj-$comp
2255    array set style {
2256        -color BCGYR
2257        -levels 10
2258        -opacity 1.0
2259    }
2260    set stylelist [$dataobj style $comp]
2261    if { $stylelist != "" } {
2262        array set style $stylelist
2263    }
2264    # This is too complicated.  We want to set the colormap, number of
2265    # isolines and opacity for the dataset.  They can be the default values,
2266    # the style hints loaded with the dataset, or set by user controls.  As
2267    # datasets get loaded, they first use the defaults that are overidden
2268    # by the style hints.  If the user changes the global controls, then that
2269    # overrides everything else.  I don't know what it means when global
2270    # controls are specified as style hints by each dataset.  It complicates
2271    # the code to handle aberrant cases.
2272
2273    if { $_changed(-opacity) } {
2274        set style(-opacity) [expr $_settings(-opacity) * 0.01]
2275    }
2276    if { $_changed(-numisolines) } {
2277        set style(-levels) $_settings(-numisolines)
2278    }
2279    if { $_changed(-colormap) } {
2280        set style(-color) $_settings(-colormap)
2281    }
2282    if { $_currentColormap == "" } {
2283        $itk_component(colormap) value $style(-color)
2284    }
2285    if { [info exists style(-stretchtofit)] } {
2286        set _settings(-stretchtofit) $style(-stretchtofit)
2287        AdjustSetting -stretchtofit
2288    }
2289    if { $_currentNumIsolines != $style(-levels) } {
2290        set _currentNumIsolines $style(-levels)
2291        set _settings(-numisolines) $_currentNumIsolines
2292        $itk_component(numisolines) value $_currentNumIsolines
2293        UpdateContourList
2294        DrawLegend
2295    }
2296    SendCmd "outline add $tag"
2297    SendCmd "outline color [Color2RGB $itk_option(-plotforeground)] $tag"
2298    SendCmd "outline visible $_settings(-outline) $tag"
2299    set scale [GetHeightmapScale]
2300    SendCmd "[list heightmap add contourlist $_contourList $scale $tag]"
2301    set _comp2scale($tag) $_settings(-heightmapscale)
2302    SendCmd "heightmap edges $_settings(-edges) $tag"
2303    SendCmd "heightmap wireframe $_settings(-wireframe) $tag"
2304    SetCurrentColormap $style(-color)
2305    set color [$itk_component(isolinecolor) value]
2306    SendCmd "heightmap isolinecolor [Color2RGB $color] $tag"
2307    SendCmd "heightmap lighting $_settings(-isheightmap) $tag"
2308    SendCmd "heightmap isolines $_settings(-isolinesvisible) $tag"
2309    SendCmd "heightmap surface $_settings(-colormapvisible) $tag"
2310    SendCmd "heightmap opacity $style(-opacity) $tag"
2311    set _settings(-opacity) [expr $style(-opacity) * 100.0]
2312}
2313
2314itcl::body Rappture::VtkHeightmapViewer::IsValidObject { dataobj } {
2315    if {[catch {$dataobj isa Rappture::Field} valid] != 0 || !$valid} {
2316        return 0
2317    }
2318    return 1
2319}
2320
2321# ----------------------------------------------------------------------
2322# USAGE: ReceiveLegend <colormap> <title> <min> <max> <size>
2323#
2324# Invoked automatically whenever the "legend" command comes in from
2325# the rendering server.  Indicates that binary image data with the
2326# specified <size> will follow.
2327# ----------------------------------------------------------------------
2328itcl::body Rappture::VtkHeightmapViewer::ReceiveLegend { colormap title min max size } {
2329    #puts stderr "ReceiveLegend colormap=$colormap title=$title range=$min,$max size=$size"
2330    if { [isconnected] } {
2331        set bytes [ReceiveBytes $size]
2332        if { ![info exists _image(legend)] } {
2333            set _image(legend) [image create photo]
2334        }
2335        $_image(legend) configure -data $bytes
2336        #puts stderr "read $size bytes for [image width $_image(legend)]x[image height $_image(legend)] legend>"
2337        if { [catch {DrawLegend} errs] != 0 } {
2338            global errorInfo
2339            puts stderr "errs=$errs errorInfo=$errorInfo"
2340        }
2341    }
2342}
2343
2344#
2345# DrawLegend --
2346#
2347#       Draws the legend in the own canvas on the right side of the plot area.
2348#
2349itcl::body Rappture::VtkHeightmapViewer::DrawLegend {} {
2350    set fname $_curFldName
2351    set c $itk_component(view)
2352    set w [winfo width $c]
2353    set h [winfo height $c]
2354    set font "Arial 8"
2355    set lineht [font metrics $font -linespace]
2356   
2357    if { [string match "component*" $fname] } {
2358        set title ""
2359    } else {
2360        if { [info exists _fields($fname)] } {
2361            foreach { title units } $_fields($fname) break
2362            if { $units != "" } {
2363                set title [format "%s (%s)" $title $units]
2364            }
2365        } else {
2366            set title $fname
2367        }
2368    }
2369    set x [expr $w - 2]
2370    if { !$_settings(-legendvisible) } {
2371        $c delete legend
2372        return
2373    }
2374    if { [$c find withtag "legend"] == "" } {
2375        set y 2
2376        # If there's a legend title, create a text item for the title.
2377        $c create text $x $y \
2378            -anchor ne \
2379            -fill $itk_option(-plotforeground) -tags "title legend" \
2380            -font $font
2381        if { $title != "" } {
2382            incr y $lineht
2383        }
2384        $c create text $x $y \
2385            -anchor ne \
2386            -fill $itk_option(-plotforeground) -tags "vmax legend" \
2387            -font $font
2388        incr y $lineht
2389        $c create image $x $y \
2390            -anchor ne \
2391            -image $_image(legend) -tags "colormap legend"
2392        $c create rectangle $x $y 1 1 \
2393            -fill "" -outline "" -tags "sensor legend"
2394        $c create text $x [expr {$h-2}] \
2395            -anchor se \
2396            -fill $itk_option(-plotforeground) -tags "vmin legend" \
2397            -font $font
2398        $c bind sensor <Enter> [itcl::code $this EnterLegend %x %y]
2399        $c bind sensor <Leave> [itcl::code $this LeaveLegend]
2400        $c bind sensor <Motion> [itcl::code $this MotionLegend %x %y]
2401    }
2402    $c delete isoline
2403    set x2 $x
2404    set iw [image width $_image(legend)]
2405    set ih [image height $_image(legend)]
2406    set x1 [expr $x2 - ($iw*12)/10]
2407    set color [$itk_component(isolinecolor) value]
2408
2409    # Draw the isolines on the legend.
2410    array unset _isolines
2411    if { $color != "none"  && [info exists _limits($_curFldName)] &&
2412         $_settings(-isolinesvisible) && $_currentNumIsolines > 0 } {
2413
2414        foreach { vmin vmax } $_limits($_curFldName) break
2415        set range [expr double($vmax - $vmin)]
2416        if { $range <= 0.0 } {
2417            set range 1.0;              # Min is greater or equal to max.
2418        }
2419        set tags "isoline legend"
2420        set offset [expr 2 + $lineht]
2421        if { $title != "" } {
2422            incr offset $lineht
2423        }
2424        foreach value $_contourList {
2425            set norm [expr 1.0 - (($value - $vmin) / $range)]
2426            set y1 [expr int(round(($norm * $ih) + $offset))]
2427            for { set off 0 } { $off < 3 } { incr off } {
2428                set _isolines([expr $y1 + $off]) $value
2429                set _isolines([expr $y1 - $off]) $value
2430            }
2431            $c create line $x1 $y1 $x2 $y1 -fill $color -tags $tags
2432        }
2433    }
2434
2435    $c bind title <ButtonPress> [itcl::code $this Combo post]
2436    $c bind title <Enter> [itcl::code $this Combo activate]
2437    $c bind title <Leave> [itcl::code $this Combo deactivate]
2438    # Reset the item coordinates according the current size of the plot.
2439    if { [info exists _limits($_curFldName)] } {
2440        foreach { vmin vmax } $_limits($_curFldName) break
2441        $c itemconfigure vmin -text [format %g $vmin]
2442        $c itemconfigure vmax -text [format %g $vmax]
2443    }
2444    set y 2
2445    # If there's a legend title, move the title to the correct position
2446    if { $title != "" } {
2447        $c itemconfigure title -text $title
2448        $c coords title $x $y
2449        incr y $lineht
2450    }
2451    $c coords vmax $x $y
2452    incr y $lineht
2453    $c coords colormap $x $y
2454    $c coords sensor [expr $x - $iw] $y $x [expr $y + $ih]
2455    $c raise sensor
2456    $c coords vmin $x [expr {$h - 2}]
2457}
2458
2459#
2460# EnterLegend --
2461#
2462itcl::body Rappture::VtkHeightmapViewer::EnterLegend { x y } {
2463    SetLegendTip $x $y
2464}
2465
2466#
2467# MotionLegend --
2468#
2469itcl::body Rappture::VtkHeightmapViewer::MotionLegend { x y } {
2470    Rappture::Tooltip::tooltip cancel
2471    set c $itk_component(view)
2472    set cw [winfo width $c]
2473    set ch [winfo height $c]
2474    if { $x >= 0 && $x < $cw && $y >= 0 && $y < $ch } {
2475        SetLegendTip $x $y
2476    }
2477}
2478
2479#
2480# LeaveLegend --
2481#
2482itcl::body Rappture::VtkHeightmapViewer::LeaveLegend { } {
2483    Rappture::Tooltip::tooltip cancel
2484    .rappturetooltip configure -icon ""
2485}
2486
2487#
2488# SetLegendTip --
2489#
2490itcl::body Rappture::VtkHeightmapViewer::SetLegendTip { x y } {
2491    set fname $_curFldName
2492    set c $itk_component(view)
2493    set w [winfo width $c]
2494    set h [winfo height $c]
2495    set font "Arial 8"
2496    set lineht [font metrics $font -linespace]
2497   
2498    set ih [image height $_image(legend)]
2499    # Subtract off the offset of the color ramp from the top of the canvas
2500    set iy [expr $y - ($lineht + 2)]
2501
2502    if { [string match "component*" $fname] } {
2503        set title ""
2504    } else {
2505        if { [info exists _fields($fname)] } {
2506            foreach { title units } $_fields($fname) break
2507            if { $units != "" } {
2508                set title [format "%s (%s)" $title $units]
2509            }
2510        } else {
2511            set title $fname
2512        }
2513    }
2514    # If there's a legend title, increase the offset by the line height.
2515    if { $title != "" } {
2516        incr iy -$lineht
2517    }
2518
2519    # Make a swatch of the selected color
2520    if { [catch { $_image(legend) get 10 $iy } pixel] != 0 } {
2521        return
2522    }
2523
2524    if { ![info exists _image(swatch)] } {
2525        set _image(swatch) [image create photo -width 24 -height 24]
2526    }
2527    set color [eval format "\#%02x%02x%02x" $pixel]
2528    $_image(swatch) put black  -to 0 0 23 23
2529    $_image(swatch) put $color -to 1 1 22 22
2530
2531    # Compute the value of the point
2532    if { [info exists _limits($fname)] } {
2533        foreach { vmin vmax } $_limits($fname) break
2534        set t [expr 1.0 - (double($iy) / double($ih-1))]
2535        set value [expr $t * ($vmax - $vmin) + $vmin]
2536    } else {
2537        set value 0.0
2538    }
2539    set tipx [expr $x + 15]
2540    set tipy [expr $y - 5]
2541    .rappturetooltip configure -icon $_image(swatch)
2542    if { [info exists _isolines($y)] } {
2543        Rappture::Tooltip::text $c [format "$title %g (isoline)" $_isolines($y)]
2544    } else {
2545        Rappture::Tooltip::text $c [format "$title %g" $value]
2546    }
2547    Rappture::Tooltip::tooltip show $c +$tipx,+$tipy   
2548}
2549
2550# ----------------------------------------------------------------------
2551# USAGE: _dropdown post
2552# USAGE: _dropdown unpost
2553# USAGE: _dropdown select
2554#
2555# Used internally to handle the dropdown list for this combobox.  The
2556# post/unpost options are invoked when the list is posted or unposted
2557# to manage the relief of the controlling button.  The select option
2558# is invoked whenever there is a selection from the list, to assign
2559# the value back to the gauge.
2560# ----------------------------------------------------------------------
2561itcl::body Rappture::VtkHeightmapViewer::Combo {option} {
2562    set c $itk_component(view)
2563    switch -- $option {
2564        post {
2565            foreach { x1 y1 x2 y2 } [$c bbox title] break
2566            set x1 [expr [winfo width $itk_component(view)] - [winfo reqwidth $itk_component(fieldmenu)]]
2567            set x [expr $x1 + [winfo rootx $itk_component(view)]]
2568            set y [expr $y2 + [winfo rooty $itk_component(view)]]
2569            tk_popup $itk_component(fieldmenu) $x $y
2570        }
2571        activate {
2572            $c itemconfigure title -fill red
2573        }
2574        deactivate {
2575            $c itemconfigure title -fill $itk_option(-plotforeground)
2576        }
2577        invoke {
2578            $itk_component(field) value $_curFldLabel
2579            AdjustSetting -field
2580        }
2581        default {
2582            error "bad option \"$option\": should be post, unpost, select"
2583        }
2584    }
2585}
2586
2587itcl::body Rappture::VtkHeightmapViewer::GetHeightmapScale {} {
2588    if {  $_settings(-isheightmap) } {
2589        set val $_settings(-heightmapscale)
2590        set sval [expr { $val >= 50 ? double($val)/50.0 : 1.0/(2.0-(double($val)/50.0)) }]
2591        return $sval
2592    }
2593    return 0
2594}
2595
2596itcl::body Rappture::VtkHeightmapViewer::SetOrientation { side } {
2597    array set positions {
2598        front  "0.707107 0.707107 0 0"
2599        back   "0 0 0.707107 0.707107"
2600        left   "0.5 0.5 -0.5 -0.5"
2601        right  "0.5 0.5 0.5 0.5"
2602        top    "1 0 0 0"
2603        bottom "0 1 0 0"
2604    }
2605    foreach name { qw qx qy qz } value $positions($side) {
2606        set _view($name) $value
2607    }
2608    set q [list $_view(qw) $_view(qx) $_view(qy) $_view(qz)]
2609    $_arcball quaternion $q
2610    SendCmd "camera orient $q"
2611    SendCmd "camera reset"
2612    set _view(xpan) 0
2613    set _view(ypan) 0
2614    set _view(zoom) 1.0
2615}
2616
2617itcl::body Rappture::VtkHeightmapViewer::UpdateContourList {} {
2618    if {$_currentNumIsolines == 0} {
2619        set _contourList ""
2620        return
2621    }
2622    if { ![info exists _limits($_curFldName)] } {
2623        return
2624    }
2625    foreach { vmin vmax } $_limits($_curFldName) break
2626    set v [blt::vector create \#auto]
2627    $v seq $vmin $vmax [expr $_currentNumIsolines+2]
2628    $v delete end 0
2629    set _contourList [$v range 0 end]
2630    blt::vector destroy $v
2631}
Note: See TracBrowser for help on using the repository browser.