Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Clamping the spline length
#1
Hi,

Not sure if this is possible or if I'm just struggling, as the API doesn't really help all that much. I'm looking to clamp the length of a Bezier spline at runtime.

The user will drag a helper object and the aim is to draw a curve from the start point to this object up to a set distance, at which point the curve will stop drawing any further until the user drags out a shorter curve. I can see a Clamp method which doesn't appear to do anything, and I'm at a loss as to what the Extrapolate method does.

Any ideas?!

Thanks,

Ash
Reply
#2
Hi,
Here is a method I quickly coded that does what you want. It surely can be enhanced:

Code:
    private static bool RemoveExcess(CurvySpline spline, Vector3 terminatorWorldPosition)
    {
        if (spline.IsInitialized == false)
            return false;

        //The position at which the spline should stop
        Vector3 nearestSplinePointToTerminator;
        float terminatorTf = spline.GetNearestPointTF(terminatorWorldPosition, out nearestSplinePointToTerminator);
        //The index of the last segment to keep, all following segements are removed
        int terminatorSegmentIndex = spline.TFToSegmentIndex(terminatorTf);

        //remove all control points beyong the terminator
        int segmentsCount = spline.Count;
        for (int segmentIndex = segmentsCount - 1; segmentIndex >= terminatorSegmentIndex; segmentIndex--)
            spline.Delete(spline.Segments[segmentIndex].NextControlPoint);

        //Add the last control point
        spline.Add(nearestSplinePointToTerminator);

        return true;
    }
Please consider leaving a review for Curvy. This will help a lot keeping Curvy relevant in the eyes of the Asset Store algorithm.
Reply


Possibly Related Threads…
Thread Author Replies Views Last Post
  Accessing generator's input spline in script, changing it at runtime smackledorf 3 116 06-17-2021, 01:59 PM
Last Post: _Aka_
  Questions about Generator: mesh/objects within spline, snap to control point dartboard 5 201 06-09-2021, 12:42 PM
Last Post: _Aka_
  get world vector3 from absolute position on spline hawken 2 99 06-08-2021, 12:28 PM
Last Post: hawken
Shocked Change spline path at runtime burn0815 7 400 05-27-2021, 08:27 PM
Last Post: _Aka_

Forum Jump: