hi
just learn houdini particle.
i am a beginner
in this project i use particles points then use copy to points node , boxs to make up model.
like this picture
however the problem is
i find some box jitter very unacceptable
so i Calculate the points distance between previous frame in solver node
if the distance less than 0.05,then the point do not move
this way make the points jitter less
however i need calculate the angle distance between previous frame also
but
i do not know how to calculate the rotation difference
let`s say ,if the rotation difference less then 0.1,then the point do not rotate.
bellow is the project file
point_jitter.hip
thanks for your help