If I use this function:

let check_overlap = ((x1 ,y1),ext1,(x2 ,y2),ext2) =>{

let r1 = ext1/2

let r2 = ext2/2

let maxdist = r1+r2

(maxdist < abs(x1-x2)) && (maxdist < abs(y1-y2))

};

I get an error when calcuationg maxdist ;

This expression has type int

It is not a function.

What am I doing wrong ?