Hi guys, this is my first post, so sorry if im doing something wrong or posting in the wrong place!
I’m currently working on some cool grass collisions. My scene is a field of grass with a ball rolling through it, pushing away the grass as it rolls past.
The problem i am having is that the grass springs back into its original position straight after the ball rolled past - whereas in reality grass takes a while to grow back into its original position after having been squashed!
My father gave me some good info when i told him about this issue:
"
I expect a “trail” is just a matter of determining the ultimate tensile strength and it’s yield strength and it’s Static Bending modulus of Elasticity (E).
Yield strength is the degree of bending the material can withstand before it fractures or '“buckles”. Grass also has a yield strength i.e. the point grass can deflect before the internal cells are crushed and therefore are not able to “recover” to it’s original position.
Yield points are used in engineering e.g. when designing a bridge or a bracket for example - aluminium can deflect more than steel before it “buckles”.
In your example the grass blades which are total bent by the ball (i.e. the middle of the ball) will probably exceed their yield point and not be able to recover back to their original position, whilst the grass blades touching the outer-sides of the ball will only defect a small amount and will recover partially or fully."
Ive not found any possibilities of controlling these factors of the paint effects grass that ive been using - ive searched online and checked all options within maya…so im assuming i’d need a script to sort this out…i’ve never used scripts and have never coded before either…does anyone know if, first of all, this is possible to do, and second of, how to do this and if its “easy” to do?
Thanks so much in advance for anyone helping me out on this or just anyone interested in this!