That sounds like what I'm after.
Thanks Nicolas.
-----Original Message-----
From: Nicolas Langlois [mailto:nicolasl(at)buzzimage.com]
Sent: Thursday, June 07, 2007 4:17 PM
To: XSI(at)Softimage.COM
Subject: Re: Curve length and scale
Matt,
it depends how you go about it but if you go through a scriptedOp to
find the curve length (always evaluated), you could multiply it by the
reverse of the scaling in X, Y and Z so that it counter calculates the
scaling in the curve length and thus gives you the length in world units
all the time.
#PYTHON EXAMPLE PSEUDO-CODE
def currentLengthSCOP_Update(ctx, out, InCrv):
length = InCrv.Value.Geometry.Length
sclx = InCrv.Kinematics.Global.Parameters("sclx").Value
scly = InCrv.Kinematics.Global.Parameters("scly").Value
sclz = InCrv.Kinematics.Global.Parameters("sclz").Value
out.Value = length * (1 / sclx) * (1 / scly) * (1 / sclz)
--
Nicolas Langlois
Senior Rigger / TD
Buzz Image
Alexander Hemery wrote:
> Hi,
> how about a script that duplicates the curve, freezes scaling, runs
> GetCurveLength ..prints the result and then deletes the new curve ?
>
> Alex.
>
> ----- Original Message ----- From: "Oz Adi" <oz(at)broadcast.co.il>
> To: <XSI(at)Softimage.COM>
> Sent: Thursday, June 07, 2007 2:45 PM
> Subject: Re: Curve length and scale
>
>
>> you can "fit" a new curve on it, which will create a scale 1 new
>> curve, and then print it's length.
>>
>> here's a little script to do so (jscript), select the curve and run it:
>>
>> /var oCrv = Selection(0);
>> var tempcurve = ApplyGenOp("CrvFit", "", oCrv, 3,
>> siPersistentOperation, siKeepGenOpInputs, null);
>> SetValue(tempcurve+".points", 100, null);
>> var newcurve = Selection(0);
>> logmessage (newcurve.ActivePrimitive.Geometry.Curves(0).length);/
>>
>> the SetValue line sets the number of points on the new fit curve, so
>> if you got a longer curve set this value up..
>> I am still learning scripting, so I jump on any simple opportunity to
>> write a stupid code :) hehe
>>
>> Oz.
>>
>>
>>
>>
>> Matt Lowery wrote:
>>> Hi all,
>>>
>>> does anyone know of a way to measure the length of a curve in xsi
>>> units that
>>> isn't dependant on the scale of the curve's centre?
>>>
>>>
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>>
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