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[Closed] get Index of reversed Spline

 
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 PolyTools3D
Oct 03, 2017 8:41 pm

Absolutly, I just realized it

Here is a much faster version, with no memory footprint.


(
    fn IBitarrayToBitarray IBitArray =
    (
        result = #{}
        
        if not IBitArray.isEmpty do
        (
            gi = (dotNetClass "Autodesk.Max.GlobalInterface").instance
            
            tmp = gi.BitArray.Create IBitArray.Size
            BitAnd = tmp.BitwiseAndWith
            
            _clear = tmp.ClearAll
            _set   = tmp.Set

            for j = 0 to IBitArray.Size-1 do
            (
                _clear()
                _set j
                if (BitAnd IBitArray).AnyBitSet do result[j+1] = true
            )
        )
        return result
    )
)
 Serejah
Oct 03, 2017 8:41 pm

Great, it’s much better now.
I got around ~3 seconds to convert 100k IBitArray.

1 Reply
 PolyTools3D
(@polytools3d)
Joined: 11 months ago

Posts: 0
Oct 03, 2017 8:41 pm
Reply toSerejah

Well, if you put it that way it sounds like terribly slow ;), and it is indeed.
If you can compile a C# method it should be pretty fast tough.

 Serejah
Oct 03, 2017 8:41 pm

Looks like I found a solution

fn IBitArrayToBitArray var IBitArray = (
    
    global tmpMxsValue = var
    local g = (dotnetclass "Autodesk.Max.GlobalInterface").Instance
    local fpv = g.fpvalue.create asdotnetobject:true
    
    g.ExecuteMAXScriptScript "::tmpMxsValue" true &fpv
    
    fpv.bits.assign ibitarray
    
    tmpMxsValue = undefined
    var
    
)
    


(
    
for x in #(100,1000,10000,100000,1000000) do (
format "------------------- % -------------------
" x
gc()
t1=timestamp()
hf = heapfree

    ba = #{}
    for i=1 to x by 3 do ba[i] = true
    
format "mxs bitarray Time: %sec. Mem: %   numberset:%
" ((timestamp()-t1)/1000 as float) (hf-heapfree) ba.numberset

gc()
t1=timestamp()
hf = heapfree

    bb = (dotNetClass "Autodesk.Max.GlobalInterface").instance.BitArray.Create ba.count
    func = bb.set
    for b in ba do func (b-1)    

format "bitarray to IBitArray Time: %sec. Mem: %

" ((timestamp()-t1)/1000 as float) (hf-heapfree)


gc()
t1=timestamp()
hf = heapfree

    xx = #{}
    IBitArrayToBitArray xx bb

format "Convert Time: %sec. Mem: %   numberset:%
" ((timestamp()-t1)/1000 as float) (hf-heapfree) xx.numberset

)
)
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