varying @vel from @vel to 0 across a velocity volume?

[nigelgardiner]

Hi There

I have a velocity volume created using the normals of  a circle so that @vel is toward the centre from all points and @v.y = 0.

What I want to do is have @vel vary from it's max value at the circumference of the volume to zero at the centre.

I have the corresponding density volume with a filled interior which gives me a values of 0 at surface and 1 at the centre so how would i multiply @vel by (1 - fog density value)?

Any advice much appreciated, hip attached.

 

thanks

Nigel.

 

radial velocity volume.hiplc

[dchow1992]

v@vel *= fit(length(@P), 0, circumference, 0, 1); 

length of P gives you distance from position to origin, if your circle isn't origin centered then you need something like length(center - @P)

Edited February 9, 2017 by dchow1992

[nigelgardiner]

Hi David

 

Thanks for that, makes sense.

cheers

Nigel.