How would you animate growing siv from point a to b?

[ISUther]

Hello, 

I am trying to figure out what node to use in order to build 25% circle from point a to point b
1.) I created Geo node and dived inside
2.) I deleted original node and created Circle node
3.) I changed circle node "Arc Angles" to 0 and -90 this way i got 25% from circle
4.) I created poly wire node and connected circle node to it. 
But now i am stuck as i don`t know what node to use in order to make that 25% circle grow from nothing to 25% 
and i don`t know how to make 6 wires grow from that main poly wire from specific spots

Some one can give me good hint or idea what node to use there? Or create small sample?

Best regards Tanel.V

[Sepu]

You can just use a Carve node to growth the curve.

[ISUther]

Thank you for this. 
Now i know what that node does. 
Do you have any idea what node to use in order ti make the curve end (tip) thinner then the other end so it goes like smoothly thick on one end and thinner on another?
And how to connect or mark specific points in that curve so that from those specific spots i start grow smaler stivs?

[ISUther]

Forgot to add attachment

[Sepu]

add an attribute wrangle and add this 

@Cd.r = 1-@ptnum/float(@numpt);

then in your polywire, on the wire radius you can add this

@Cd.r*.01

Also you can use an AtrributeVop to have more control with a Ramp parameter

Edited September 30, 2016 by Sepu

[ISUther]

hmm for some reason not working as expected. 
Here is what i am getting: 
Both ends seem to be same thickness.

Edited September 30, 2016 by ISUther

[ISUther]

2 more pictures i realized that pictures that i added above the text is too small for any normal person to see it (the vex part)

Edited September 30, 2016 by ISUther

[Sepu]

Here a quick example

QuickExample.hiplc

 

Is the order of your nodes. The polywire doesn't know about the Attribute @Cd that you are putting in the radius

Edited September 30, 2016 by Sepu