PointLine force

Replies to This Discussion

Permalink Reply by Daniel Piker on January 28, 2014 at 3:43am

Hi Francesco,

Sorry for the delay getting back to you.

The PointLine force isn't working properly yet - I'll get it fixed for the next release but in the meantime if you describe or show what you are trying to achieve I might be able to suggest a workaround.

Permalink Reply by Francesco di Niccolo on January 28, 2014 at 4:13am

Hi Daniel,

thank you very much for the answer.

I need that component in many ways, but for example, I need it to move some point on a surface depending on their diastance from a curve/line/polyline.

For now I've solved dividing the curve in n points, and then using PowerLaw forces for every point.

It seems to work well, but with PointLine force all will be more elegant :)

Permalink Reply by Daniel Piker on January 28, 2014 at 4:45am

I see - Would it also work to have a version of the CurvePull component that allows you to set different exponents?

(You can actually already put in a negative value for strength to make the curve repel the points, but because it is a spring-like force, it gets stronger with distance, whereas usually you'd want the inverse)

One advantage of the PointLine force is that it will work with lines whose endpoints are themselves defined by moving particles in Kangaroo - so the curve can also get pushed by the particles, whereas the CurvePull takes the curve as input - so the interaction is one-way. On the other hand, CurvePull can use a NURBS curve directly, without discretizing it.

Permalink Reply by Francesco di Niccolo on January 28, 2014 at 7:08am

Exactly, you totally get the point!

A CurvePull that allow to set different exponents would be perfect!

Permalink Reply by Robert Vier on June 30, 2014 at 3:27am

hi daniel,

is this component fixed in the current release?

thank you,

Best

Robert