Hello

Attached Is a scene I am working on where I have animated points to move around a closed curve, and then I have copied geo to those points.

What I really want to be able to do though, is this same thing on using an open curve. I want the points to move along the curve, and when they reach the end, snap around to the beginning of the curve again. What is happening at the moment when I plug in the open curve, is the endpoint is moving along the curve, and the curve is getting smaller.

This would be a similar result to animating along a curve using MASH for Maya.


Any insight into this would be much appreciated

Drop down the chain node and read the help card. It might be what you're looking for?

You could also try submitting the first point of the curve to a popnet and then use the supplied curve as a guide. In this setup, match the life of the particle to the length of the curve. The space between the spheres is determined by the activation trigger on the pop source.
Every nine frames.

Enivob
Drop down the chain node and read the help card. It might be what you're looking for?

You could also try submitting the first point of the curve to a popnet and then use the supplied curve as a guide. In this setup, match the life of the particle to the length of the curve. The space between the spheres is determined by the activation trigger on the pop source.

$SF%9==1

Every nine frames.

Thank you so much I have been playing around with this, and it gets me really close to where I want to be.
But I do want to be able to have really specific control over the number of points and the speed. A popnet may be the way to go

Dante Never Cry
Found it in houdini Hive Events .

 

int ptcount_min = chi("Min_Point");
int ptcount_max = chi("Max_Point");

 

float seed = chf("seed")+1;
float rand_count = rand(@primnum*seed+3);
float count_dist = chramp("Point_per_distri",rand_count);
int count = int(fit01(count_dist,ptcount_min,ptcount_max));

 

float rev = fit01(float(ch("reverse")),1,-1);
float rate_min = chf("Follow_rate_min")*rev;
float rate_max = chf("Follow_rate_max")*rev;
float rand = rand(@primnum*433+1);
float rate = fit01(rand,rate_min,rate_max)*@Frame;

 

float rate_pp_min = chf("Rate_pp_min")*rev;
float rate_pp_max = chf("Rate_pp_max")*rev;

 

for(int i=1 ; i<count ; i++){
    int id = @primnum * ptcount_max + i;
    float rate_pp = fit01(rand(id*456),rate_pp_min,rate_pp_max)*@Frame;
    vector uv = (rand(id)+rate+rate_pp)%1;
    vector p = primuv(0,"P",@primnum,uv);
    int pt = addpoint(0,p);
    setpointattrib(0,"id",pt,id,"set");
    setpointattrib(0,"curveu",pt,uv.x,"set");
    }
removeprim(0,@primnum,1);[/quote]

Help me out just a little, where does this go haha. Would this be in a wrangle that is controlling the curve?

something like this should work for uniformly resampled curves, with some additional control for variable speed