I have a scene where a line grows over a logo using Vellum Hair. My question is: how can I make the lines grow randomly? Right now, all the lines grow at the same time, but I'd like them to grow at different times in a more natural, random way.
Here's one way to do it. Generate a start and end frame attribute for each hair strand. Then loop through each hair and use the frame number to fit the start/end range to 0-1 for second_u.
a slightly different approach but basically the same thing as above - generating a random carve attribute on each primitive(has to be on primitive level not point).
