Sometimes it could be really tricky to find right values, as these depend a lot on the item's shape (the algorithm traces virtual bounding-spheres
) and size difference between used items (in your case rocks). Please feel free to check our on-line reference guide
for detailed description of the Collisions
feature, where you can find examples showing how different local / global Radius
values affect the final look. In your case (rocks) the default "centre" value (50%) for the Height
should be fine.
Usually, to get a compact look, it's better to combine various sizes (you can easily archive that even without preparing additional geometry by changing the Scale
value for some of your Custom object(s)
). By setting accurately the Density
value, in most cases there is no need to use the Collisions
feature (it's designed mainly for check collisions between trees).
Hope you find it useful and please feel free to post an image(s) for further clarifying.