can i modify one end of a curve but get as result a curve with the same length ?

Hi !

could i possibly modify the position of an end of a curve so that the curve remains the same length (therefore changes it's shape accodingly).

I thought maybe with the bezier component it can be done, but you need to know some sort of relationship between the vectors lengts and orientations and the length of the resulting curve, and this doesn't sound as something aproachable.

any ideas?

Replies to This Discussion

Permalink Reply by David Rutten on April 25, 2010 at 7:19am

Hi Andrei,

why not measure the length before, then adjust, then trim the curve back to the old length?

--
David Rutten
david@mcneel.com
Poprad, Slovakia

Permalink Reply by Andrei Raducanu on April 25, 2010 at 8:01am

because the end points of the curve will modify and i am interested to input their position

Permalink Reply by David Rutten on April 25, 2010 at 9:09am

I don't understand. Do you want to ensure a curve is the same length after some geometric operation, or do you want to modify a curve as though it is a physical piece of string?

--
David Rutten
david@mcneel.com
Poprad, Slovakia

Permalink Reply by Andrei Raducanu on April 25, 2010 at 11:30am

second version - as it were a string (with no elasticity)

Permalink Reply by David Rutten on April 25, 2010 at 12:25pm

Well, then you'll have to write a physics solver for strings. You'll have to define how the bending forces work etc. as well. This is quite complicated.

Kangaroo has done something like this, that might be the only thing standing in between you and 2 fun weeks jam-packed with programming.

--
David Rutten
david@mcneel.com
Poprad, Slovakia

Permalink Reply by Andrei Raducanu on April 25, 2010 at 1:24pm

haha, thanks, i downloaded the kangaroo kit a while ago but didn't play with it yet

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