How can I create an id attribute from this intersect attribute?

[canevar]

I want to create segments from the non intersecting parts of a curve.  First value that is not -1 is the end of first segment, second value is the beginning of 2nd segment.

[Alain2131]

// Wrangle set to Run Over Detail

int current_segment = 0;

int end_of_segment = 0;
for(int pt=0; pt<npoints(0); pt++)
{
    setpointattrib(0, "id", pt, current_segment);
    
    int intersect = point(0, "intersect", pt);
    if(intersect >= 0)
    {
        if(!end_of_segment)
        {
            end_of_segment = 1;
            current_segment++;
        }
    }
    else
        end_of_segment = 0;
}

In the scene, I noted that it's a bit easier to do this if you do not have the "doubled intersect" around each segments, so there's a second method that's a bit easier to follow.

Basically, it's a sequential algorithm.
For each point..
We assign current_segment to the current point.
Is the current point the end of a segment ?
If yes, we increment current_segment by one.
There's some logic to handle the "doubled intersect", otherwise current_segment would increase by 2 at the end and start.

Does that work for you ?

intersect segment id.hiplc

[canevar]

Thanks Alain! That works beatifully. You saved me from falling into desperation. So simple problem and yet I could not come up with a solution.