Vex : Random Walker

gistfile1.txt

// User parameters added to attribute wrangle parameter interface
int        walkers             = chi("walkers");
int        steps                = chi("steps"); // Placing $F in steps, each walker will grow during playback
vector  step                  = chv("step");
int        connectPoints   = chi("connect");

vector direct    = {0,1,0};
vector offset    = 0.5;
vector rand     = 0.0;
vector stepinc = 0.0;

for (int j = 0; j < walkers; j++){
      
    rand = 0.0;
      
    for(int i = 0; i < steps; i++){
        
        direct        = rand(i) - offset;
        stepinc       = rand(i) + step;
        rand         += direct * (random(i+j) - offset) * stepinc;
        vector newPos = rand;
                
        i@pt = addpoint(geoself(), newPos);

        if(connectPoints && i > 0){
            int prim = addprim(geoself(), "polyline");
            addvertex(geoself(), prim, @pt-1);
            addvertex(geoself(), prim, @pt);       
        }                    
    }
}