Random axis vector

vector2 r = rand(@ptnum); v@dir[int(r.x * 3)] = r.y < 0.5 ? -1 : 1;

Don’t forget arbitrary group syntax in s a VEX function.

int points[] = expandpointgroup(0, sprintf(“* ^@startCode!=%s ^@destCode!=%s”, s@destCode, s@startCode));