C#: Curve Subdivision

[bo.bosheng.liu]

Hi

I have a C# code question I can’t solve. I hope someone can help me pointing in the right direction. I’m writing a curve subdivision code in C#, but I’m stuck at the last statement, which is creating a curve in the Rhino interface. Any help will be much appreciated.

   for (int j = 0; j < iterationCount; j++)
    {
      List<Point3d> newControlPoints = new List<Point3d>();

      for (int i = 0; i < controlPoints.Count - 1; i++)
      {
        Point3d oneQuarterPoint = 0.75 * controlPoints[i] + 0.25 * controlPoints[i + 1];
        newControlPoints.Add(oneQuarterPoint);

        Point3d threeQuarterPoint = 0.25 * controlPoints[i] + 0.25 * controlPoints[i + 1];
        newControlPoints.Add(threeQuarterPoint);

      }
      controlPoints = newControlPoints;

    }

    curve = new PolylineCurve(controlPoints);

19_1119_C#_Intro.gh (8.3 KB)

[Michael_Pryor (ekim)]

Seems you’ve not declared what curve is. If it is new and not an output then it should be.

PolylineCurve curve = new PolylineCurve(controlPoints);

If it is an output of a component then the output needs to be named curve.

[laurent_delrieu]

[DavidRutten]

Yup, like @laurent_delrieu said… assign your curve to A

Also, your threeQuarters interpolation is not correct.

[bo.bosheng.liu]

@Michael_Pryor @laurent_delrieu @DavidRutten Thank you for your help. I got it now!