pearl-area-display.ipf

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#pragma rtGlobals=3     // Use modern global access method and strict wave access.
#pragma IgorVersion = 6.2
#pragma ModuleName = PearlAreaDisplay
#pragma version = 1.04
#include "pearl-compat"

// 3D data is handled by 3 windows. they don't have to be visible all at the same time.


static function /s graphname_from_dfref(df, prefix)
    dfref df
    string prefix

    string name

    name = GetDataFolder(1, df)
    name = ReplaceString("root:", name, "")
    name = name[0, strlen(name) - 2]
    name = ReplaceString(" ", name, "")
    name = PearlCleanupName(prefix + name)
    if (CheckName(name, 6))
        name = UniqueName(name, 6, 0)
    endif
    
    return name
end

function /s ad_display(image)
    wave image // wave which contains the image data from the detector
    // returns the name of the graph window
    
    dfref savedf = GetDataFolderDFR()
    dfref imagedf = GetWavesDataFolderDFR(image)
    setdatafolder imagedf

    string dfname = ReplaceString("root:", GetDataFolder(1, imagedf), "")
    string graphtitle = dfname + " View"
    string /g view_graphname = graphname_from_dfref(imagedf, "view_")
    svar graphname = view_graphname
    display /k=1/n=$graphname as graphtitle
    graphname = s_name
    appendimage /w=$graphname image
    
    setdatafolder savedf
    return graphname
end

function /s ad_display_histogram(image)
    wave image

    dfref savedf = GetDataFolderDFR()
    dfref imagedf = GetWavesDataFolderDFR(image)
    string s_imagedf = GetDataFolder(1, imagedf)
    setdatafolder imagedf
    
    make /n=(1)/o hist // histogram

    string dfname = ReplaceString("root:", GetDataFolder(1, imagedf), "")
    string graphtitle = dfname + " Histogram"
    string /g hist_graphname = graphname_from_dfref(imagedf, "hist_")
    svar graphname = hist_graphname
    display /k=1/n=$graphname as graphtitle
    graphname = s_name
    appendtograph /w=$graphname hist
    
    ModifyGraph /w=$graphname rgb(hist)=(39168,0,0)
    ModifyGraph /w=$graphname mode=6
    ModifyGraph /w=$graphname mirror=1
    ModifyGraph /w=$graphname minor=1
    ModifyGraph /w=$graphname axThick=0.5
    ModifyGraph /w=$graphname lblPosMode=1,lblPos=30,lblMargin=0
    ModifyGraph /w=$graphname btLen=4
    ModifyGraph /w=$graphname margin(left)=45,margin(bottom)=35,margin(top)=10,margin(right)=10
    ModifyGraph /w=$graphname gfSize=10
    Label /w=$graphname bottom "value"
    Label /w=$graphname left "# pixels"
    
    ad_calc_histogram(image)

    setdatafolder savedf
    return graphname
end

function /s ad_display_profiles(image, [filter])
    wave image
    string filter
    variable show_legend = 0 // currently not supported

    if (WaveDims(image) != 2)
        abort "ad_display_profiles: image wave must be two-dimensional."
    endif
    if (ParamIsDefault(filter))
        filter = "ad_box_filter"
    endif
    
    // data folders and references
    dfref savedf = GetDataFolderDFR()
    dfref imagedf = GetWavesDataFolderDFR(image)
    string s_imagedf = GetDataFolder(1, imagedf)
    setdatafolder imagedf
    string s_viewdf = PearlCleanupName("view_" + NameOfWave(image))
    newdatafolder /o/s $s_viewdf
    dfref viewdf = GetDataFolderDFR()
    s_viewdf = GetDataFolder(1, viewdf)
    
    // data structures
    string /g sourcepath = GetWavesDataFolder(image, 2)
    string viewname = "view_image"
    duplicate /o image, $viewname /wave=view
    make /n=(3,3)/o xprofiles // NX x 3 wave with 3 one-dimensional profiles along Y dimension
    make /n=(3,3)/o yprofiles // NY x 3 wave with 3 one-dimensional profiles along X dimension
    string /g view_filter
    string /g view_filter_options
    view_filter = filter
    view_filter_options = ""
    variable /g view_filter_smoothing_x = 1
    variable /g view_filter_smoothing_y = 1
    variable /g view_cursor_mode = 0
    string dfname = ReplaceString("root:", GetDataFolder(1, imagedf), "")
    string graphtitle = dfname + NameOfWave(image) + " Profiles"
    string /g prof_graphname = graphname_from_dfref(imagedf, "prof_")
    svar graphname = prof_graphname
    variable /g graph_avg // average value in ROI (ROI is defined by the crosshairs A and B)
    variable /g graph_min // minimum value in ROI
    variable /g graph_max // maximum value in ROI
    variable /g graph_sum // sum of all values in ROI
    variable /g graph_sdev // standard deviation of all values in ROI
    
    // graph setup
    display /k=1 /n=$graphname /w=(100,100,500,400) as graphtitle
    graphname = s_name
    AppendToGraph /w=$graphname /L=xprofiles xprofiles[*][0],xprofiles[*][1],xprofiles[*][2]
    AppendToGraph /w=$graphname /VERT/B=yprofiles yprofiles[*][0],yprofiles[*][1],yprofiles[*][2]
    AppendImage /w=$graphname view
    string imgname = StringFromList(0, ImageNameList(graphname, ";"))
    ModifyImage /w=$graphname $imgname ctab= {*,*,BlueGreenOrange,0}
    ModifyGraph /w=$graphname rgb(xprofiles)=(39168,0,0),rgb(yprofiles)=(39168,0,0)
    ModifyGraph /w=$graphname rgb(xprofiles#1)=(0,26112,0),rgb(yprofiles#1)=(0,26112,0)
    ModifyGraph /w=$graphname rgb(xprofiles#2)=(0,9472,39168),rgb(yprofiles#2)=(0,9472,39168)
    ModifyGraph /w=$graphname mirror(xprofiles)=2,mirror(bottom)=3,mirror(yprofiles)=2,mirror(left)=3
    ModifyGraph /w=$graphname nticks=3
    ModifyGraph /w=$graphname minor=1
    ModifyGraph /w=$graphname axThick=0.5
    ModifyGraph /w=$graphname lblPosMode=1,lblPos=30,lblMargin=0
    ModifyGraph /w=$graphname btLen=4
    ModifyGraph /w=$graphname freePos(xprofiles)=0
    ModifyGraph /w=$graphname freePos(yprofiles)=0
    ModifyGraph /w=$graphname axisEnab(xprofiles)={0.64,1}
    ModifyGraph /w=$graphname axisEnab(bottom)={0,0.6}
    ModifyGraph /w=$graphname axisEnab(yprofiles)={0.64,1}
    ModifyGraph /w=$graphname axisEnab(left)={0,0.6}
    ModifyGraph /w=$graphname zero(left)=8
    ModifyGraph /w=$graphname margin(left)=40,margin(bottom)=30,margin(top)=20,margin(right)=40
    ModifyGraph /w=$graphname gfSize=10

    // axis labels  
    string labels = note(image)
    string lab
    lab = StringByKey("AxisLabelX", labels, "=", "\r")
    if (!strlen(lab))
        lab = "X"
    endif
    Label /w=$graphname bottom lab + " (\\U)"
    lab = StringByKey("AxisLabelY", labels, "=", "\r")
    if (!strlen(lab))
        lab = "Y"
    endif
    Label /w=$graphname left lab + " (\\U)"
    lab = StringByKey("AxisLabelD", labels, "=", "\r")
    if (!strlen(lab))
        lab = "value"
    endif
    Label /w=$graphname xprofiles lab + " (\\U)"
    Label /w=$graphname yprofiles lab + " (\\U)"
    
    // legend
    if (show_legend)
        Legend /w=$graphname/C/N=text0/J/F=2/D=0.5/T={28}/A=RT/X=0.00/Y=0.00 "\\s(xprofiles)\tprofile A"
        AppendText /w=$graphname "\\s(xprofiles#1)\tprofile B"
        AppendText /w=$graphname "\\s(xprofiles#2)\tROI average"
        AppendText /w=$graphname "min\t\\{" + s_viewdf + "graph_min}"
        AppendText /w=$graphname "max\t\\{" + s_viewdf + "graph_max}"
        AppendText /w=$graphname "sum\t\\{" + s_viewdf + "graph_sum}"
        AppendText /w=$graphname "avg\t\\{" + s_viewdf + "graph_avg}"
        AppendText /w=$graphname "sdev\t\\{" + s_viewdf + "graph_sdev}"
    else
        TextBox /w=$graphname /C/N=text0 /F=0 /B=1 /X=1.00 /Y=1.00
        lab = StringByKey("Dataset", labels, "=", "\r")
        if (strlen(lab))
            AppendText /w=$graphname lab
        endif
        AppendText /w=$graphname "sum\t\\{" + s_viewdf + "graph_sum}"
        AppendText /w=$graphname "avg\t\\{" + s_viewdf + "graph_avg}"
        AppendText /w=$graphname "sdev\t\\{" + s_viewdf + "graph_sdev}"
    endif
    
    // interactive elements
    Cursor /w=$graphname /A=1 /P /I /S=2 /H=1 /L=1 A $imgname 0,0
    Cursor /w=$graphname /A=1 /P /I /S=2 /H=1 /L=1 B $imgname DimSize(view, 0)-1, DimSize(view, 1)-1
    variable pcurs
    pcurs = floor(DimSize(xprofiles, 0) / 3)
    Cursor /w=$graphname /A=0 /P /S=1 /H=0 C xprofiles#2 pcurs
    pcurs = floor(DimSize(xprofiles, 0) * 2 / 3)
    Cursor /w=$graphname /A=0 /P /S=1 /H=0 D xprofiles#2 pcurs
    pcurs = floor(DimSize(yprofiles, 0) / 3)
    Cursor /w=$graphname /A=0 /P /S=1 /H=0 E yprofiles#2 pcurs
    pcurs = floor(DimSize(yprofiles, 0) * 2 / 3)
    Cursor /w=$graphname /A=0 /P /S=1 /H=0 F yprofiles#2 pcurs
    ShowInfo /w=$graphname /CP=0
    
    SetWindow  $graphname, hook(ad_profiles_hook)=ad_profiles_hook
    ControlBar /w=$graphname 21
    Button b_reset_cursors win=$graphname, title="reset cursors",pos={0,0},size={70,20},proc=PearlAreaDisplay#bp_reset_cursors
    Button b_reset_cursors win=$graphname, fColor=(65535,65535,65535),fSize=10
    
    SetVariable sv_smoothing_x win=$graphname, title="X smoothing",pos={130,2},bodyWidth=40
    SetVariable sv_smoothing_x win=$graphname, value=view_filter_smoothing_x,limits={1,100,1}
    SetVariable sv_smoothing_x win=$graphname, proc=PearlAreaDisplay#svp_smoothing
    SetVariable sv_smooting_y win=$graphname, title="Y smoothing",pos={240,2},bodyWidth=40
    SetVariable sv_smooting_y win=$graphname, value=view_filter_smoothing_y,limits={1,100,1}
    SetVariable sv_smooting_y win=$graphname, proc=PearlAreaDisplay#svp_smoothing

    PopupMenu pm_export win=$graphname, mode=0,title="Export"
    PopupMenu pm_export win=$graphname, value="X profile;Y profile;X profile (collate);Y profile (collate)"
    PopupMenu pm_export win=$graphname, pos={308,0},bodyWidth=60,proc=PearlAreaDisplay#pmp_export
    PopupMenu pm_export win=$graphname, help={"Export profile of selected area and display in graph. Collate mode = display all profiles in same graph."}
    
    // data processing
    ad_update_profiles(image)
    
    setdatafolder savedf
    return graphname
end

function ad_update_profiles(image)
    wave image

    // data folders and references
    dfref viewdf = get_view_folder(image)
    if (DataFolderRefStatus(viewdf) == 0)
        return -1 // data folder not found
    endif
    dfref savedf = GetDataFolderDFR()
    setdatafolder viewdf
    
    // data structures
    string viewname = "view_image"
    duplicate /o image, $viewname /wave=view
    
    // data processing
    svar view_filter
    svar view_filter_options
    nvar smoothing_x = view_filter_smoothing_x
    nvar smoothing_y = view_filter_smoothing_y
    funcref ad_default_image_filter filterfunc = $view_filter
    view_filter_options = ReplaceNumberByKey("SmoothingX", view_filter_options, smoothing_x, "=", ";")
    view_filter_options = ReplaceNumberByKey("SmoothingY", view_filter_options, smoothing_y, "=", ";")
    filterfunc(view, view_filter_options)
    
    ad_calc_cursor_profiles(view)
    
    setdatafolder savedf
    return 0
end

function ad_profiles_cursor_mode(image, mode)
    wave image
    variable mode
    
    dfref savedf = GetDataFolderDFR()
    wave view_image = get_view_image(image)
    dfref viewdf = GetWavesDataFolderDFR(view_image)
    svar /sdfr=viewdf graphname = prof_graphname
    nvar /sdfr=viewdf cursor_mode = view_cursor_mode
    wave /sdfr=viewdf xprofiles, yprofiles
    
    variable dx = DimSize(view_image, 0)
    variable dy = DimSize(view_image, 1)
    switch(mode)
        case 1: // background selection
            Cursor /w=$graphname /A=0 /P /I /S=2 /H=1 /L=1 A view_image 0, 0
            Cursor /w=$graphname /A=0 /P /I /S=2 /H=1 /L=1 B view_image dx-1, dy-1
            Cursor /w=$graphname /A=0 /P /I /S=2 /H=2 /L=1 C view_image round(0.2 * dx) -1, 0
            Cursor /w=$graphname /A=0 /P /I /S=2 /H=2 /L=1 D view_image round(0.8 * dx) -1, 0
            Cursor /w=$graphname /A=0 /P /I /S=2 /H=2 /L=1 E view_image round(0.4 * dx) -1, 0
            Cursor /w=$graphname /A=0 /P /I /S=2 /H=2 /L=1 F view_image round(0.6 * dx) -1, 0

            ShowInfo /w=$graphname /CP=0
            cursor_mode = mode
            break
        default:
            Cursor /w=$graphname /A=1 /P /I /S=2 /H=1 /L=1 A view_image 0,0
            Cursor /w=$graphname /A=1 /P /I /S=2 /H=1 /L=1 B view_image dx-1, dy-1
            variable pcurs
            pcurs = floor(DimSize(xprofiles, 0) / 3)
            Cursor /w=$graphname /A=0 /P /S=1 /H=0 C xprofiles#2 pcurs
            pcurs = floor(DimSize(xprofiles, 0) * 2 / 3)
            Cursor /w=$graphname /A=0 /P /S=1 /H=0 D xprofiles#2 pcurs
            pcurs = floor(DimSize(yprofiles, 0) / 3)
            Cursor /w=$graphname /A=0 /P /S=1 /H=0 E yprofiles#2 pcurs
            pcurs = floor(DimSize(yprofiles, 0) * 2 / 3)
            Cursor /w=$graphname /A=0 /P /S=1 /H=0 F yprofiles#2 pcurs
            ShowInfo /w=$graphname /CP=0
            cursor_mode = 0
    endswitch
    
    setdatafolder savedf
    return 0
end

function ad_profiles_set_cursor(image, cursorname, xa, ya, [pscale])
    wave image
    string cursorname
    variable xa, ya
    variable pscale
    
    if (ParamIsDefault(pscale))
        pscale = 0
    endif
    
    // data folders and references
    dfref savedf = GetDataFolderDFR()
    wave view_image = get_view_image(image)
    dfref viewdf = GetWavesDataFolderDFR(view_image)
    svar /sdfr=viewdf graphname = prof_graphname

    variable pa, qa
    if (pscale)
        pa = xa
        qa = ya
    else
        pa = round((xa - DimOffset(view_image, 0)) / DimDelta(view_image, 0))
        qa = round((ya - DimOffset(view_image, 1)) / DimDelta(view_image, 1))
    endif
    
    pa = min(pa, DimSize(view_image, 0) - 1)
    pa = max(pa, 0)
    qa = min(qa, DimSize(view_image, 1) - 1)
    qa = max(qa, 0)
    Cursor /i /p /w=$graphname $cursorname view_image pa, qa

    setdatafolder savedf
    return 0
End

// the lines can be removed manually using the draw toolbox, or by calling this function with @c clean=1.
function ad_profiles_crosshairs(image, [clear])
    wave image
    variable clear
    
    if (ParamIsDefault(clear))
        clear = 0
    endif
    
    // data folders and references
    wave view_image = get_view_image(image)
    dfref viewdf = GetWavesDataFolderDFR(view_image)
    svar /sdfr=viewdf graphname = prof_graphname

    string cursors = "A;B"
    string colors = "39168,0,0;0,26112,0"
    string color
    variable ncursors
    variable icursor
    string cursorname
    string groupname = "crosshairs"
    variable xx, yy
    struct RGBColor rgb
    
    if (clear == 0)
        SetDrawEnv /W=$graphname push
        DrawAction /w=$graphname getgroup=$groupname, delete, begininsert
        SetDrawEnv /w=$graphname gstart, gname=$groupname
    
        SetDrawEnv /W=$graphname dash=4
        SetDrawEnv /W=$graphname linethick=0.5

        ncursors = ItemsInList(cursors, ";")
        for (icursor=0; icursor < ncursors; icursor += 1)
            cursorname = StringFromList(icursor, cursors, ";")
            color = StringFromList(icursor, colors, ";")
            rgb.red = str2num(StringFromList(0, color, ","))
            rgb.green = str2num(StringFromList(1, color, ","))
            rgb.blue = str2num(StringFromList(2, color, ","))
            if (strlen(CsrInfo($cursorname, graphname)) > 0)
                xx = hcsr($cursorname, graphname)
                yy = vcsr($cursorname, graphname)
                SetDrawEnv /W=$graphname linefgc=(rgb.red, rgb.green, rgb.blue)
                SetDrawEnv /W=$graphname save
                SetDrawEnv /W=$graphname xcoord=bottom, ycoord=prel
                DrawLine /W=$graphname xx, 0, xx, 1
                SetDrawEnv /W=$graphname xcoord=prel, ycoord=left
                DrawLine /W=$graphname 0, yy, 1, yy
            endif
        endfor

        SetDrawEnv /w=$graphname gstop
        DrawAction /w=$graphname endinsert
        SetDrawEnv /W=$graphname pop
        SetDrawEnv /W=$graphname save
    else
        DrawAction /w=$graphname getgroup=$groupname, delete
    endif

    return 0
end

static function /wave get_source_image(view)
    wave view // image wave displayed in a profiles window

    dfref viewdf = GetWavesDataFolderDFR(view)
    svar /z /sdfr=viewdf sourcepath
    if (svar_exists(sourcepath))
        wave /z img = $sourcepath
    else
        wave /z img = $""
    endif
    return img
end

static function /df make_view_folder(source)
    wave source // wave which contains the raw data from the detector.

    // data folders and references
    dfref savedf = GetDataFolderDFR()
    dfref imagedf = GetWavesDataFolderDFR(source)
    string s_imagedf = GetDataFolder(1, imagedf)
    setdatafolder imagedf
    string s_viewdf = PearlCleanupName("view_" + NameOfWave(source))
    newdatafolder /o/s $s_viewdf
    dfref viewdf = GetDataFolderDFR()

    setdatafolder savedf
    return viewdf
end

static function /df get_view_folder(source)
    wave source

    // data folders and references
    dfref savedf = GetDataFolderDFR()
    dfref imagedf = GetWavesDataFolderDFR(source)
    dfref viewdf
    setdatafolder imagedf
    string s_viewdf = PearlCleanupName("view_" + NameOfWave(source))
    if (DataFolderExists(s_viewdf))
        setdatafolder $s_viewdf
        viewdf = GetDataFolderDFR()
    endif
    
    setdatafolder savedf
    return viewdf
end

static function /wave get_view_image(source)
    wave source

    dfref viewdf = get_view_folder(source)
    string viewname = "view_image"
    wave /sdfr=viewdf view = $viewname

    return view
end

static function bp_reset_cursors(ba) : ButtonControl
    STRUCT WMButtonAction &ba

    switch( ba.eventCode )
        case 2: // mouse up
            string imgname = StringFromList(0, ImageNameList(ba.win, ";"))
            wave /z image = ImageNameToWaveRef(ba.win, imgname)
            if (waveexists(image))
                Cursor /i/p A $imgname 0,0
                Cursor /i/p B $imgname DimSize(image, 0)-1, DimSize(image, 1)-1
            endif
            break
        case -1: // control being killed
            break
    endswitch

    return 0
End

static function svp_smoothing(sva) : SetVariableControl
    STRUCT WMSetVariableAction &sva

    string imglist

    switch( sva.eventCode )
        case 1: // mouse up
        case 2: // Enter key
        case 3: // Live update
            imglist = ImageNameList(sva.win, ";")
            wave /z img = ImageNameToWaveRef(sva.win, StringFromList(0, imglist))
            if (WaveExists(img))
                wave source = get_source_image(img)
                if (WaveExists(source))
                    ad_update_profiles(source)
                endif
            endif
            break
        case -1: // control being killed
            break
    endswitch

    return 0
end

static function pmp_export(pa) : PopupMenuControl
    STRUCT WMPopupAction &pa

    switch( pa.eventCode )
        case 2: // mouse up
            variable popNum = pa.popNum
            
            string imgname = StringFromList(0, ImageNameList(pa.win, ";"))
            wave /z image = ImageNameToWaveRef(pa.win, imgname)
            if (waveexists(image) && (popNum >= 1) && (popNum <= 2))
                ad_export_profile(image, popNum - 1, show=1)
            elseif (waveexists(image) && (popNum >= 3) && (popNum <= 4))
                ad_export_profile(image, popNum - 3, show=2)
            endif
            
            break
        case -1: // control being killed
            break
    endswitch

    return 0
End

function ad_profiles_hook(s)
    struct WMWinHookStruct &s
    variable hookresult = 0
    string imglist
    string cmd
    dfref viewdf
    
    switch(s.eventCode)
        case 2: // delete data folder after window is killed
            imglist = ImageNameList(s.winName, ";")
            wave /z img = ImageNameToWaveRef(s.winName, StringFromList(0, imglist))
            if (WaveExists(img))
                viewdf = GetWavesDataFolderDFR(img)
                cmd = "killdatafolder /z " + GetDataFolder(1, viewdf)
                Execute /P/Q/Z cmd
            endif
            break
        case 7: // update profiles when cursor is moved
            imglist = ImageNameList(s.winName, ";")
            wave /z img = ImageNameToWaveRef(s.winName, StringFromList(0, imglist))
            if (WaveExists(img))
                ad_calc_cursor_profiles(img)
                hookresult = 1
            else
                hookresult = 0
            endif
            break
    endswitch
    
    return hookresult
end

function ad_calc_cursor_profiles(image)
    wave image
    
    dfref savedf = GetDataFolderDFR()
    dfref imagedf = GetWavesDataFolderDFR(image)
    setdatafolder imagedf

    svar graphname = prof_graphname

    variable pa, qa // point coordinates cursor A
    if (strlen(CsrInfo(A, graphname)) > 0)
        pa = pcsr(A, graphname)
        qa = qcsr(A, graphname)
    else
        pa = 0
        qa = 0
    endif
    
    variable pb, qb // point coordinates cursor B
    if (strlen(CsrInfo(B, graphname)) > 0)
        pb = pcsr(B, graphname)
        qb = qcsr(B, graphname)
    else
        pb = DimSize(image, 0) - 1
        qb = DimSize(image, 1) - 1
    endif
    
    ad_calc_profiles(image, pa, qa, pb, qb) 
    setdatafolder savedf
end

function ad_calc_profiles(image, pa, qa, pb, qb)
    wave image
    variable pa, qa
    variable pb, qb
    
    dfref savedf = GetDataFolderDFR()
    dfref imagedf = GetWavesDataFolderDFR(image)
    setdatafolder imagedf

    wave xprofiles
    wave yprofiles
    nvar graph_avg
    nvar graph_min
    nvar graph_max
    nvar graph_sum
    nvar graph_sdev
    
    // horizontal profiles at crosshairs
    redimension /n=(dimsize(image,0), 3) xprofiles
    setscale /p x dimoffset(image,0), dimdelta(image,0), WaveUnits(image,0), xprofiles
    setscale d 0, 0, waveunits(image,-1), xprofiles
    xprofiles[][0] = image[p][qa]
    xprofiles[][1] = image[p][qb]
    
    note /k xprofiles
    note xprofiles, "SourceWave=" + nameofwave(image)
    note xprofiles, "SourceDimension=0"
    note xprofiles, "SourceIndex0=" + num2str(qa)
    note xprofiles, "SourceIndex1=" + num2str(qb)

    // average horizontal profile between crosshairs
    variable qq, q0, q1
    q0 = min(qa, qb)
    q1 = max(qa, qb)
    xprofiles[][2] = 0
    for (qq = q0; qq <= q1; qq += 1)
        xprofiles[][2] += image[p][qq]
    endfor
    xprofiles[][2] /= q1 - q0 + 1
        
    // vertical profiles at crosshairs
    redimension /n=(dimsize(image,1), 3) yprofiles
    setscale /p x dimoffset(image,1), dimdelta(image,1), WaveUnits(image,1), yprofiles
    setscale d 0, 0, waveunits(image,-1), yprofiles
    yprofiles[][0] = image[pa][p]
    yprofiles[][1] = image[pb][p]

    note /k yprofiles
    note yprofiles, "SourceWave=" + nameofwave(image)
    note yprofiles, "SourceDimension=1"
    note yprofiles, "SourceIndex0=" + num2str(pa)
    note yprofiles, "SourceIndex1=" + num2str(pb)
    
    // average vertical profile between crosshairs
    variable pp, p0, p1
    p0 = min(pa, pb)
    p1 = max(pa, pb)
    yprofiles[][2] = 0
    for (pp = p0; pp <= p1; pp += 1)
        yprofiles[][2] += image[pp][p]
    endfor
    yprofiles[][2] /= p1 - p0 + 1

    // statistics between crosshairs
    Duplicate /r=[p0,p1][q0,q1]/o image, roi_image
    WaveStats /Q roi_image
    graph_avg = v_avg
    graph_min = v_min
    graph_max = v_max
    graph_sum = v_avg * v_npnts
    graph_sdev = v_sdev

    // histogram
    wave /z hist
    if (waveexists(hist))
        Histogram /B=3 roi_image, hist
    endif
    
    setdatafolder savedf
end

function ad_export_profile(view_image, dim, [trace, show, overwrite])
    wave view_image
    variable dim
    variable trace
    variable show
    variable overwrite
    
    dfref savedf = GetDataFolderDFR()

    if (ParamIsDefault(trace))
        trace = 2
    endif
    if (ParamIsDefault(show))
        show = 0
    endif
    if (ParamIsDefault(overwrite))
        overwrite = 0
    endif
    
    // view folder
    dfref imagedf = GetWavesDataFolderDFR(view_image)
    string dim_label
    switch(dim)
        case 0:
            wave /sdfr=imagedf profiles=xprofiles
            dim_label = "x"
            break
        case 1:
            wave /sdfr=imagedf profiles=yprofiles
            dim_label = "y"
            break
        default:
            return -1   // invalid argument
    endswitch
    string graphname_string = "export_graph_" + dim_label
    svar /z /sdfr=imagedf linked_graphname = $graphname_string
    
    // source folder
    wave /z source_image = get_source_image(view_image)
    if (WaveExists(source_image))
        dfref sourcedf = GetWavesDataFolderDFR(source_image)
        setdatafolder sourcedf
    else
        return -2   // invalid source data folder
    endif

    // format dest wave name
    string profile_note = note(profiles)
    string name_base
    string name_dim
    string name_index
    string profile_name
    variable index_width = ceil(log(DimSize(view_image, 1 - dim)))
    variable index0 = NumberByKey("SourceIndex0", profile_note, "=", "\r")
    variable index1 = NumberByKey("SourceIndex1", profile_note, "=", "\r")
    name_dim = "_" + dim_label
    sprintf name_index, "%0*u_%0*u", index_width, index0, index_width, index1
    name_base = NameOfWave(source_image)
    name_base = name_base[0, min(strlen(name_base), 31 - strlen(name_index) - strlen(name_dim) - 1)]
    profile_name = name_base + name_dim + name_index
    if ((overwrite == 0) && (CheckName(profile_name, 1)))
        profile_name = UniqueName(profile_name + "_", 1, 0)
    endif
    
    // create dest wave
    duplicate /o /r=[][trace] profiles, $profile_name /wave=dest_profile
    redimension /n=(dimsize(profiles, 0)) dest_profile
    profile_note = ReplaceStringByKey("SourceWave", profile_note, NameOfWave(source_image), "=", "\r")
    note /k dest_profile
    note dest_profile, profile_note
    print "created", GetWavesDataFolder(dest_profile, 2)
    
    if (show)
        string graphname
        string graphtitle
        if (show == 2)
            // common graph for all profiles of a dimension
            graphname = "export_profiles_" + dim_label
            graphtitle = UpperStr(dim_label) + " Profiles"
        else
            // one graph per source image
            if (svar_exists(linked_graphname) && (ItemsInList(WinList(linked_graphname, ";", "WIN:1"), ";") >= 1))
                graphname = linked_graphname
            else
                graphname = GetWavesDataFolder(source_image, 0) + name_dim
            endif
            graphtitle = UpperStr(dim_label) + " Profiles: " + GetWavesDataFolder(source_image, 2)
        endif
    
        if ((ItemsInList(WinList(graphname, ";", "WIN:1"), ";") >= 1))
            appendtograph /w=$graphname dest_profile
        else
            setdatafolder imagedf
            display /k=1 /n=$graphname dest_profile as graphtitle
            graphname = s_name
            ModifyGraph /w=$graphname mirror=1,nticks=3,minor=1
            ModifyGraph /w=$graphname axThick=0.5,btLen=4
            ModifyGraph /w=$graphname gfSize=10
            ModifyGraph /w=$graphname grid=2,gridHair=0,gridRGB=(52224,52224,52224)
            Legend /w=$graphname /C/N=legend0/F=0/B=1/A=LT/X=0.00/Y=0.00
            
            if (show != 2)
                string /g $graphname_string = graphname
            endif
        endif
    endif
    
    setdatafolder savedf
    return 0
end

static function set_trace_colors(graphname)
    string graphname
    
    ModifyGraph /w=$graphname /z rgb[0]=(0, 0, 0)
    ModifyGraph /w=$graphname /z rgb[1]=(65535, 16385, 16385)
    ModifyGraph /w=$graphname /z rgb[2]=(2, 39321, 1)
    ModifyGraph /w=$graphname /z rgb[3]=(0, 0, 65535)
    ModifyGraph /w=$graphname /z rgb[4]=(39321, 1, 31457)
    ModifyGraph /w=$graphname /z rgb[5]=(48059, 48059, 48059)
    ModifyGraph /w=$graphname /z rgb[6]=(65535, 32768, 32768)
    ModifyGraph /w=$graphname /z rgb[7]=(0, 65535, 0)
    ModifyGraph /w=$graphname /z rgb[8]=(16385,65535,65535)
    ModifyGraph /w=$graphname /z rgb[9]=(65535, 32768, 58981)
end

function ad_calc_histogram(image)
    wave image
    
    dfref savedf = GetDataFolderDFR()
    dfref imagedf = GetWavesDataFolderDFR(image)
    setdatafolder imagedf

    wave hist
    Histogram /B=3 image, hist
    
    setdatafolder savedf
end

function ad_default_image_filter(image, options)
    wave image
    string options
end

function ad_box_filter(image, options)
    wave image
    string options
    
    variable xsmoothing = NumberByKey("SmoothingX", options, "=", ";")
    variable ysmoothing = NumberByKey("SmoothingY", options, "=", ";")

    if ((NumType(xsmoothing) == 0) && (xsmoothing >= 2))
        Smooth /B /DIM=0 /E=3 xsmoothing, image
    endif
    if ((NumType(ysmoothing) == 0) && (ysmoothing >= 2))
        Smooth /B /DIM=1 /E=3 ysmoothing, image
    endif
end

function ad_transpose_filter(image, options)
    wave image
    string options

    MatrixTranspose image   
end


// ################### 3D DATA ##################

function /s ad_display_brick(data)
    wave data
    
    if(exists("NewGizmo") != 4)
        abort "Gizmo XOP must be installed."
    endif
    if (WaveDims(data) != 3)
        abort "ad_display_brick: data must be three-dimensional."
    endif
    
    dfref savedf = GetDataFolderDFR()
    dfref datadf = GetWavesDataFolderDFR(data)
    string s_datadf = GetDataFolder(1, datadf)
    dfref viewdf = make_view_folder(data)
    
    setdatafolder viewdf
    string dfname = ReplaceString("root:", s_datadf, "")
    string graphtitle = dfname + " Gizmo"
    string /g gizmo_graphname = graphname_from_dfref(datadf, "giz_")
    svar graphname = gizmo_graphname

    if ((strlen(graphname) > 0) && (wintype(graphname) == 13))
        setdatafolder savedf
        return graphname // gizmo window exists
    endif

    variable nx = dimsize(data, 0)
    variable ny = dimsize(data, 1)
    variable nz = dimsize(data, 2)
    
    variable pp
    string obj
    string cmd
    
    // igor does not allow calling gizmo functions directly
    setdatafolder datadf
    sprintf cmd, "NewGizmo /k=1 /n=%s /w=(100,100,500,400) /t=\"%s\"", graphname, graphtitle
    execute /q cmd
    cmd = "AppendToGizmo /D Axes=BoxAxes, name=axes0"
    execute /q cmd

    obj = "surface_xmid"
    pp = round(nx / 2 - 1)
    sprintf cmd, "AppendToGizmo /D surface=%s, name=%s", nameofwave(data), obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo modifyObject=%s, property={srcMode, 128}", obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo ModifyObject=%s, property={plane, %d}", obj, pp
    execute /q cmd
    sprintf cmd, "ModifyGizmo modifyObject=%s, property={surfaceCtab, BlueGreenOrange}", obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo ModifyObject=%s, property={SurfaceCTABScaling,128}", obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo modifyObject=%s, property={surfaceCTABAlpha, 1.0}", obj
    execute /q cmd

    obj = "surface_ymid"
    pp = round(ny / 2 - 1)
    sprintf cmd, "AppendToGizmo /D surface=%s, name=%s", nameofwave(data), obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo modifyObject=%s, property={srcMode, 64}", obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo ModifyObject=%s, property={plane, %d}", obj, pp
    execute /q cmd
    sprintf cmd, "ModifyGizmo modifyObject=%s, property={surfaceCtab, BlueGreenOrange}", obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo ModifyObject=%s, property={SurfaceCTABScaling,128}", obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo modifyObject=%s, property={surfaceCTABAlpha, 1.0}", obj
    execute /q cmd

    obj = "surface_zmid"
    pp = round(nz / 2 - 1)
    sprintf cmd, "AppendToGizmo /D surface=%s, name=%s", nameofwave(data), obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo modifyObject=%s, property={srcMode, 32}", obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo ModifyObject=%s, property={plane, %d}", obj, pp
    execute /q cmd
    sprintf cmd, "ModifyGizmo modifyObject=%s, property={surfaceCtab, BlueGreenOrange}", obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo ModifyObject=%s, property={SurfaceCTABScaling,128}", obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo modifyObject=%s, property={surfaceCTABAlpha, 1.0}", obj
    execute /q cmd

    obj = "axes0"
    sprintf cmd, "ModifyGizmo ModifyObject=%s,property={-1,axisScalingMode,1}", obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo ModifyObject=%s,property={-1,axisColor,0,0,0,1}", obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo ModifyObject=%s,property={0,ticks,3}", obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo ModifyObject=%s,property={1,ticks,3}", obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo ModifyObject=%s,property={2,ticks,3}", obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo modifyObject=%s property={Clipped,0}", obj
    execute /q cmd
    sprintf cmd, "ModifyGizmo modifyObject=%s property={-1,fontScaleFactor,2}", obj
    execute /q cmd

    sprintf cmd, "ModifyGizmo showAxisCue=1"
    execute /q cmd

    setdatafolder savedf
    return graphname
end

function ad_brick_slicer(data)
    wave data

    // data folders and references
    dfref savedf = GetDataFolderDFR()
    dfref datadf = GetWavesDataFolderDFR(data)
    string s_datadf = GetDataFolder(1, datadf)
    dfref viewdf = make_view_folder(data)

    setdatafolder viewdf
    svar /z ex_panel = slicer_panelname
    if (svar_exists(ex_panel))
        string panels = WinList("SlicerPanel*", ";", "WIN:64")
        if (WhichListItem(ex_panel, panels, ";") >= 0)
            dowindow /f $(StringFromList(0, panels, ";"))
            return 0
        endif
    endif

    variable /g x_slice_pos
    variable /g y_slice_pos
    variable /g z_slice_pos
    variable /g slab_thickness
    string /g brick_path = getwavesdatafolder(data, 2)
    variable /g x_autoinc = 0
    variable /g y_autoinc = 0
    variable /g z_autoinc = 0

    // axis labels  
    string labels = note(data)
    string xlabel = StringByKey("AxisLabelX", labels, "=", "\r")
    if (!strlen(xlabel))
        xlabel = "X"
    endif
    string ylabel = StringByKey("AxisLabelY", labels, "=", "\r")
    if (!strlen(ylabel))
        ylabel = "Y"
    endif
    string zlabel = StringByKey("AxisLabelZ", labels, "=", "\r")
    if (!strlen(zlabel))
        zlabel = "Z"
    endif
    string dlabel = StringByKey("Dataset", labels, "=", "\r")
    if (!strlen(dlabel))
        dlabel = NameOfWave(data)
    endif
    
    // this section copied from slicer panel    
    NewPanel /k=1 /W=(500,600,890,940) /N=SlicerPanel as "Brick Slicer"
    string /g slicer_panelname = S_name
    string panel = s_name

    GroupBox g_xslice win=$panel,pos={8,8},size={376,96},title=xlabel
    Slider sl_xslice_position win=$panel,pos={16,32},size={240,56},proc=PearlAreaDisplay#slp_slice_position
    Slider sl_xslice_position win=$panel,limits={0,100,1},variable=x_slice_pos,vert= 0
    SetVariable sv_xslice_position win=$panel,pos={20,80},size={92,16},proc=PearlAreaDisplay#svp_slice_position,title="X"
    SetVariable sv_xslice_position win=$panel,limits={0,100,1},value=x_slice_pos
    Button b_xslice_center win=$panel,pos={122,80},size={20,20},proc=PearlAreaDisplay#bp_move_slice,title="\\W618"
    Button b_xslice_center win=$panel,help={"reset to center position"}
    Button b_xslice_extract win=$panel,pos={288,80},size={68,20},proc=PearlAreaDisplay#bp_extract_slice,title="extract slice"
    Button b_xslice_extract win=$panel,help={"extract this slice to a separate wave"}
    //CheckBox cb_xslab_active win=$panel,pos={288,80},size={80,16},title="Display X Slab"
    //CheckBox cb_xslab_active win=$panel,value= 0
    TitleBox tb_xslice_animation win=$panel,pos={288,32},size={356,16},title="animation",frame=0
    TitleBox tb_xslice_animation win=$panel,anchor= MC
    Button b_xslice_back win=$panel,pos={288,48},size={20,20},proc=PearlAreaDisplay#bp_move_slice,title="\\W646"
    Button b_xslice_back win=$panel,help={"animate backwards"}
    Button b_xslice_forward win=$panel,pos={312,48},size={20,20},proc=PearlAreaDisplay#bp_move_slice,title="\\W649"
    Button b_xslice_forward win=$panel,help={"animate forward"}
    Button b_xslice_stop win=$panel,pos={336,48},size={20,20},proc=PearlAreaDisplay#bp_move_slice,title="\\W616"
    Button b_xslice_stop win=$panel,help={"stop animation"}
    
    GroupBox g_yslice win=$panel,pos={8,108},size={376,96},title=ylabel
    Slider sl_yslice_position win=$panel,pos={16,132},size={240,56},proc=PearlAreaDisplay#slp_slice_position
    Slider sl_yslice_position win=$panel,limits={0,100,1},variable=y_slice_pos,vert= 0
    SetVariable sv_yslice_position win=$panel,pos={20,180},size={92,16},proc=PearlAreaDisplay#svp_slice_position,title="Y"
    SetVariable sv_yslice_position win=$panel,limits={0,100,1},value=y_slice_pos
    Button b_yslice_center win=$panel,pos={122,180},size={20,20},proc=PearlAreaDisplay#bp_move_slice,title="\\W618"
    Button b_yslice_center win=$panel,help={"reset to center position"}
    Button b_yslice_extract win=$panel,pos={288,180},size={68,20},proc=PearlAreaDisplay#bp_extract_slice,title="extract slice"
    Button b_yslice_extract win=$panel,help={"extract this slice to a separate wave"}
    //CheckBox cb_yslab_active win=$panel,pos={288,180},size={80,16},title="Display Y Slab"
    //CheckBox cb_yslab_active win=$panel,value= 0
    TitleBox tb_yslice_animation win=$panel,pos={288,132},size={356,16},title="animation",frame=0
    TitleBox tb_yslice_animation win=$panel,anchor= MC
    Button b_yslice_back win=$panel,pos={288,148},size={20,20},proc=PearlAreaDisplay#bp_move_slice,title="\\W646"
    Button b_yslice_back win=$panel,help={"animate backwards"}
    Button b_yslice_forward win=$panel,pos={312,148},size={20,20},proc=PearlAreaDisplay#bp_move_slice,title="\\W649"
    Button b_yslice_forward win=$panel,help={"animate forward"}
    Button b_yslice_stop win=$panel,pos={336,148},size={20,20},proc=PearlAreaDisplay#bp_move_slice,title="\\W616"
    Button b_yslice_stop win=$panel,help={"stop animation"}
    
    GroupBox g_zslice win=$panel,pos={8,208},size={376,96},title=zlabel
    Slider sl_zslice_position win=$panel,pos={16,232},size={240,56},proc=PearlAreaDisplay#slp_slice_position
    Slider sl_zslice_position win=$panel,limits={0,100,1},variable=z_slice_pos,vert= 0
    SetVariable sv_zslice_position win=$panel,pos={20,280},size={92,16},proc=PearlAreaDisplay#svp_slice_position,title="Z"
    SetVariable sv_zslice_position win=$panel,limits={0,100,1},value=z_slice_pos
    Button b_zslice_center win=$panel,pos={122,280},size={20,20},proc=PearlAreaDisplay#bp_move_slice,title="\\W618"
    Button b_zslice_center win=$panel,help={"reset to center position"}
    Button b_zslice_extract win=$panel,pos={288,280},size={68,20},proc=PearlAreaDisplay#bp_extract_slice,title="extract slice"
    Button b_zslice_extract win=$panel,help={"extract this slice to a separate wave"}
    //CheckBox cb_zslab_active win=$panel,pos={288,280},size={80,16},title="Display Z Slab"
    //CheckBox cb_zslab_active win=$panel,value= 0
    TitleBox tb_zslice_animation win=$panel,pos={288,232},size={356,16},title="animation",frame=0
    TitleBox tb_zslice_animation win=$panel,anchor= MC
    Button b_zslice_back win=$panel,pos={288,248},size={20,20},proc=PearlAreaDisplay#bp_move_slice,title="\\W646"
    Button b_zslice_back win=$panel,help={"animate backwards"}
    Button b_zslice_forward win=$panel,pos={312,248},size={20,20},proc=PearlAreaDisplay#bp_move_slice,title="\\W649"
    Button b_zslice_forward win=$panel,help={"animate forward"}
    Button b_zslice_stop win=$panel,pos={336,248},size={20,20},proc=PearlAreaDisplay#bp_move_slice,title="\\W616"
    Button b_zslice_stop win=$panel,help={"stop animation"}

    TitleBox t_slicerpath win=$panel,pos={8,316},size={128,20},disable=2,title=dlabel
    //SetVariable setvar0 win=$panel,pos={240,316},size={120,16},title="slab thickness"
    //SetVariable setvar0 win=$panel,limits={1,inf,1},value=slab_thickness
    
    // update control limits and move slicing planes to the center
    setwindow $panel, userdata(control_datafolder) = GetDataFolder(1, viewdf)
    setwindow $panel, userdata(brick_path) = brick_path
    update_slice_info()
    x_slice_pos = dimoffset(data, 0) + dimsize(data, 0) * dimdelta(data, 0) / 2
    y_slice_pos = dimoffset(data, 1) + dimsize(data, 1) * dimdelta(data, 1) / 2
    z_slice_pos = dimoffset(data, 2) + dimsize(data, 2) * dimdelta(data, 2) / 2
    
    svar /z /sdfr=viewdf gizmo_graphname
    if (svar_exists(gizmo_graphname) && (strlen(gizmo_graphname) > 0) && (wintype(gizmo_graphname) == 13))
        ad_gizmo_set_plane(data, 0, x_slice_pos)
        ad_gizmo_set_plane(data, 1, y_slice_pos)
        ad_gizmo_set_plane(data, 2, z_slice_pos)
    endif
    svar /z /sdfr=viewdf slice_graphname
    if (svar_exists(slice_graphname) && (strlen(slice_graphname) > 0) && (wintype(slice_graphname) == 1))
        ad_profiles_set_slice(data, 2, z_slice_pos)
    endif
    
    ad_slicer_init_bg()
    setdatafolder savedf
end

function /s ad_display_slice(data)
    wave data
    
    if (WaveDims(data) != 3)
        abort "ad_display_slice: data must be three-dimensional."
    endif
    
    dfref savedf = GetDataFolderDFR()
    dfref datadf = GetWavesDataFolderDFR(data)
    string s_datadf = GetDataFolder(1, datadf)
    dfref viewdf = make_view_folder(data)

    setdatafolder viewdf
    string dfname = ReplaceString("root:", s_datadf, "")
    dfname = dfname[0, strlen(dfname) - 2]
    string graphtitle = dfname + " Slice"
    
    if (exists("slice_graphname") != 2)
        string /g slice_graphname = ""
    endif
    string /g slice_wavename = PearlCleanupName("slice_" + NameOfWave(data))
    svar graphname = slice_graphname
    svar slicename = slice_wavename

    make /n=(1,1)/o $slicename
    wave slice = $slicename
    if ((strlen(graphname) == 0) || (wintype(graphname) != 1))
        graphname = ad_display_profiles(slice)
    endif
    variable z_slice_pos = dimoffset(data, 2) + dimsize(data, 2) * dimdelta(data, 2) / 2
    ad_profiles_set_slice(data, 2, z_slice_pos)
    ad_profiles_set_cursor(slice, "A", -inf, -inf, pscale=1)
    ad_profiles_set_cursor(slice, "B", +inf, +inf, pscale=1)
    
    setdatafolder savedf
    return graphname
end

static function update_slice_info()
    dfref savedf = GetDataFolderDFR()
    
    svar brick_path
    //svar slicer_panelname
    wave brick = $brick_path
    
    //dowindow /F $slicer_panelname
    variable lo, hi, inc
    lo = dimoffset(brick, 0)
    inc = dimdelta(brick, 0)
    hi = lo + inc * (dimsize(brick, 0) - 1)
    Slider sl_xslice_position,limits={lo,hi,inc}
    SetVariable sv_xslice_position,limits={lo,hi,inc}
    lo = dimoffset(brick, 1)
    inc = dimdelta(brick, 1)
    hi = lo + inc * (dimsize(brick, 1) - 1)
    Slider sl_yslice_position,limits={lo,hi,inc}
    SetVariable sv_yslice_position,limits={lo,hi,inc}
    lo = dimoffset(brick, 2)
    inc = dimdelta(brick, 2)
    hi = lo + inc * (dimsize(brick, 2) - 1)
    Slider sl_zslice_position,limits={lo,hi,inc}
    SetVariable sv_zslice_position,limits={lo,hi,inc}

    setdatafolder savedf
end

function ad_gizmo_set_plane(brick, dim, value)
    wave brick
    variable dim
    variable value
    
    dfref savedf = GetDataFolderDFR()
    dfref datadf = GetWavesDataFolderDFR(brick)
    dfref viewdf = get_view_folder(brick)
    svar /z /sdfr=viewdf graphname=gizmo_graphname

    variable pp = round((value - dimoffset(brick, dim)) / dimdelta(brick, dim))
    if ((pp < 0) || (pp >= dimsize(brick, dim)))
        return -1   // requested value out of range
    endif
    
    if (svar_exists(graphname) && (strlen(graphname) > 0) && (wintype(graphname) == 13))
        string axes = "xyz"
        string obj = "surface_" + axes[dim] + "mid"
        string cmd
        sprintf cmd, "ModifyGizmo /N=%s ModifyObject=%s, property={plane, %d}", graphname, obj, pp
        execute /q cmd
    else
        return -2 // gizmo window not found
    endif
    
    return 0
end

function ad_profiles_set_slice(brick, dim, value)
    wave brick
    variable dim
    variable value
    
    dfref savedf = GetDataFolderDFR()
    dfref datadf = GetWavesDataFolderDFR(brick)
    dfref viewdf = get_view_folder(brick)
    svar /z /sdfr=viewdf graphname = slice_graphname
    svar /z /sdfr=viewdf slicename = slice_wavename

    variable pp = round((value - dimoffset(brick, dim)) / dimdelta(brick, dim))
    if ((pp < 0) || (pp >= dimsize(brick, dim)))
        return -1   // requested value out of range
    endif

    if (svar_exists(graphname) && (strlen(graphname) > 0) && (wintype(graphname) == 1))
        setdatafolder viewdf
        switch(dim)
            case 0: // X
                wave wdest = ad_extract_slab_x(brick, pp, pp, slicename)
                ad_update_profiles(wdest)
                break
            case 1: // Y
                wave wdest = ad_extract_slab_y(brick, pp, pp, slicename)
                ad_update_profiles(wdest)
                break
            case 2: // Z
                wave wdest = ad_extract_slab_z(brick, pp, pp, slicename)
                ad_update_profiles(wdest)
                break
        endswitch
    else
        return -2 // graph window not found
    endif
    
    setdatafolder savedf
    return 0
end

static function slp_slice_position(sa) : SliderControl
    STRUCT WMSliderAction &sa

    dfref savedf = GetDataFolderDFR()

    switch( sa.eventCode )
        case -1: // control being killed
            break
        default:
            if( sa.eventCode & 1 ) // value set
                string control_datafolder = GetUserData(sa.win, "", "control_datafolder")
                setdatafolder control_datafolder
                string brick_path = GetUserData(sa.win, "", "brick_path")
                string axis = StringFromList(1, sa.ctrlName, "_")
                variable dim = char2num(axis[0]) - char2num("x")
                
                wave /z brick = $brick_path
                if (WaveExists(brick))
                    ad_gizmo_set_plane(brick, dim, sa.curval)
                    ad_profiles_set_slice(brick, dim, sa.curval)
                else
                    Abort "can't find original wave " + brick_path
                endif
            endif
            break
    endswitch

    setdatafolder savedf
    return 0
End

static function svp_slice_position(sva) : SetVariableControl
    STRUCT WMSetVariableAction &sva

    dfref savedf = GetDataFolderDFR()

    switch( sva.eventCode )
        case 1: // mouse up
        case 2: // Enter key
        case 3: // Live update
            string control_datafolder = GetUserData(sva.win, "", "control_datafolder")
            setdatafolder control_datafolder
            string brick_path = GetUserData(sva.win, "", "brick_path")
            string axis = StringFromList(1, sva.ctrlName, "_")
            variable dim = char2num(axis[0]) - char2num("x")
            
            wave /z brick = $brick_path
            if (WaveExists(brick))
                ad_gizmo_set_plane(brick, dim, sva.dval)
                ad_profiles_set_slice(brick, dim, sva.dval)
            else
                Abort "can't find original wave " + brick_path
            endif
            break
        case -1: // control being killed
            break
    endswitch

    setdatafolder savedf
    return 0
End

static function bp_move_slice(ba) : ButtonControl
    STRUCT WMButtonAction &ba

    dfref savedf = GetDataFolderDFR()

    switch( ba.eventCode )
        case 2: // mouse up
            string control_datafolder = GetUserData(ba.win, "", "control_datafolder")
            setdatafolder control_datafolder
            string brick_path = GetUserData(ba.win, "", "brick_path")
            string axis = StringFromList(1, ba.ctrlName, "_")
            string cmd = StringFromList(2, ba.ctrlName, "_")
            variable dim = char2num(axis[0]) - char2num("x")
            string posvariable = getdatafolder(1) + axis[0] + "_slice_pos"
            nvar pos = $(posvariable)

            wave /z brick = $brick_path
            if (WaveExists(brick))
                strswitch (cmd)
                    case "forward":
                        ad_slicer_start_bg(brick, dim, posvariable, dimdelta(brick, dim))
                        break
                    case "back":
                        ad_slicer_start_bg(brick, dim, posvariable, -dimdelta(brick, dim))
                        break
                    case "center":
                        ad_slicer_stop_bg(posvariable)
                        bp_move_slice_center(brick, dim, posvariable)
                        break
                    case "stop":
                        ad_slicer_stop_bg(posvariable)
                        break
                endswitch
            else
                ad_slicer_stop_bg(posvariable)
                Abort "can't find original wave " + brick_path
            endif
            break
        case -1: // control being killed
            break
    endswitch

    setdatafolder savedf
    return 0
End

static function bp_extract_slice(ba) : ButtonControl
    STRUCT WMButtonAction &ba

    dfref savedf = GetDataFolderDFR()

    switch( ba.eventCode )
        case 2: // mouse up
            string control_datafolder = GetUserData(ba.win, "", "control_datafolder")
            setdatafolder control_datafolder
            string brick_path = GetUserData(ba.win, "", "brick_path")
            wave brick = $brick_path
            dfref brickdf = GetWavesDataFolderDFR(brick)
            
            string axis = StringFromList(1, ba.ctrlName, "_")
            string cmd = StringFromList(2, ba.ctrlName, "_")
            variable dim = char2num(axis[0]) - char2num("x")
            string posvariable = getdatafolder(1) + axis[0] + "_slice_pos"
            
            nvar pos = $(posvariable)
            variable pp = round((pos - dimoffset(brick, dim)) / dimdelta(brick, dim))
            if ((pp < 0) || (pp >= dimsize(brick, dim)))
                return -1   // requested value out of range
            endif
            
            variable dig = ceil(log(dimsize(brick, dim)))
            string slicename
            sprintf slicename, "%s_%s%0*u", NameOfWave(brick), axis[0], dig, pp
            setdatafolder brickdf
            switch(dim)
                case 0: // X
                    wave wdest = ad_extract_slab_x(brick, pp, pp, slicename)
                    break
                case 1: // Y
                    wave wdest = ad_extract_slab_y(brick, pp, pp, slicename)
                    break
                case 2: // Z
                    wave wdest = ad_extract_slab_z(brick, pp, pp, slicename)
                    break
            endswitch
            
            string msg
            sprintf msg, "%s=%g", axis[0], pos
            note wdest, msg
        
            break
        case -1: // control being killed
            break
    endswitch

    setdatafolder savedf
    return 0
End

static function bp_move_slice_center(brick, dim, posvariable)
    wave brick
    variable dim
    string posvariable

    nvar pos = $posvariable
    pos = dimoffset(brick, dim) + dimdelta(brick, dim) * dimsize(brick, dim) / 2
    ad_gizmo_set_plane(brick, dim, pos)
    ad_profiles_set_slice(brick, dim, pos)
end

static function ad_slicer_move_bg(s)
    STRUCT WMBackgroundStruct &s
    
    dfref savedf = GetDataFolderDFR()
    setdatafolder root:pearl_area:slicer
    wave /t bg_brickpaths
    wave /t bg_graphnames
    wave /t bg_variablepaths
    wave bg_dimensions
    wave bg_increments
    
    variable ii
    variable nn = numpnts(bg_brickpaths)
    variable dim
    variable pp

    for (ii = 0; ii < nn; ii += 1)
        wave /z brick = $bg_brickpaths[ii]
        nvar /z pos = $bg_variablepaths[ii]
        dim = bg_dimensions[0]
        pos += bg_increments[ii]
        // wrap around at limits
        pp = round((pos - dimoffset(brick, dim)) / dimdelta(brick, dim))
        if (pp <= -0.5)
            pos = dimoffset(brick, dim) + dimdelta(brick, dim) * (dimsize(brick, dim) - 1)
        elseif (pp >= dimsize(brick, dim) - 0.5)
            pos = dimoffset(brick, dim)
        endif
        if (waveexists(brick))
            ad_gizmo_set_plane(brick, dim, pos)
            ad_profiles_set_slice(brick, dim, pos)
        endif
    endfor
    
    setdatafolder savedf
    return 0
End

function ad_slicer_init_bg()
    dfref savedf = GetDataFolderDFR()
    setdatafolder root:
    newdatafolder /o/s pearl_area
    newdatafolder /o/s slicer
    
    make /n=0/o/t bg_brickpaths
    make /n=0/o/t bg_variablepaths
    make /n=0/o/i/u bg_dimensions
    make /n=0/o bg_increments
    
    CtrlNamedBackground ad_slicer, period = 30, proc = PearlAreaDisplay#ad_slicer_move_bg
    
    setdatafolder savedf
    return 0
end

function ad_slicer_start_bg(brick, dimension, posvariable, delta)
    wave brick // 3D data wave
    variable dimension // dimension to animate, 0, 1, or 2
    string posvariable // full path to the global position variable
    variable delta // step increment, should be +/- dimdelta
    
    dfref savedf = GetDataFolderDFR()
    setdatafolder root:pearl_area:slicer
    wave /t bg_brickpaths
    wave /t bg_variablepaths
    wave bg_dimensions
    wave bg_increments

    // create entry in ad_slicer background task table
    variable idx
    FindValue /TEXT=posvariable /TXOP=4 /Z bg_variablepaths
    if (v_value >= 0)
        idx = v_value
    else
        idx = numpnts(bg_variablepaths)
        InsertPoints idx, 1, bg_brickpaths, bg_variablepaths, bg_dimensions, bg_increments
    endif

    // set background task
    bg_brickpaths[idx] = GetWavesDataFolder(brick, 2)
    bg_variablepaths[idx] = posvariable
    bg_dimensions[idx] = dimension
    bg_increments[idx] = delta
    
    // start background task
    if (numpnts(bg_variablepaths) > 0)
        CtrlNamedBackground ad_slicer, start
    endif
    
    setdatafolder savedf
    return 0
end

function ad_slicer_stop_bg(posvariable)
    string posvariable

    dfref savedf = GetDataFolderDFR()
    setdatafolder root:pearl_area:slicer
    wave /t bg_brickpaths
    wave /t bg_variablepaths
    wave bg_dimensions
    wave bg_increments

    // find entry in ad_slicer background task table
    FindValue /TEXT=posvariable /TXOP=4 /Z bg_variablepaths
    if (v_value >= 0)
        DeletePoints v_value, 1, bg_brickpaths, bg_variablepaths, bg_dimensions, bg_increments
    endif

    // stop background task if task table is empty
    if (numpnts(bg_variablepaths) == 0)
        CtrlNamedBackground ad_slicer, stop
    endif
    
    setdatafolder savedf
    return 0
end