First posting so apologise if I missundersatnd anything.
I am trying to create a random selection of adjacent polygons on a grid. I am getting exactly what I need by generating the random input from the frame number (see attached RandomGridSelect_byFrame.hiplc).
However, as this is going to be part of an HDA in Unreal, what I need is for the random input to not be based on the frame number but rather on a randomly generated number on a slider.
I have created a version using an Attribute wrangle node but it is not selecting only adjacent polygons.
float seed = rand(ch("seed"));
float thresh = ch("threshold");
float rand_selection = rand(i@class + seed);
if(rand_selection < thresh)
{
i@keep = 1;
}Ultimately what I am trying to achieve is the random selection of only adjacent primitives in a grid (see attached RandomGridSelection.jpg) so no only touching by corners and no isolated selections.
I have looked on-line and even tried chatGPT (that was a complete waste of time, the thing is an idiot!)
Any advice greatly received
THankyou