Continuous Transformation in a loop

@Subir_Dutta wrote:

I have a with Transformation. I need to transform a selected object continuously in a loop as seen in the attached code. I am running the loop for 18 times and in each loop I am rotating the selected object by 10 degree around z axis ( 0,0,1). But even after doing lots of attempt in different permutation combination, I see only one transformation of 10 degree ( don't know the first or the last ) where as I expect the selected object to be finally rotated by 180 degree when the loop ends.

What might be issue ?

The code is as below.

public class TransFormTest : Command
{
...

protected override Result RunCommand(RhinoDoc doc, RunMode mode)
{
    Rhino.DocObjects.ObjRef rhobj1;
    var rc1 = RhinoGet.GetOneObject("Select Link One", true, Rhino.DocObjects.ObjectType.InstanceReference, out rhobj1);
    if (rc1 != Rhino.Commands.Result.Success)
        return rc1;

    currentTransform = Transform.Identity;

    for(int i = 1; i <= 18; i++)
    {
        TransformBrep(ref  doc, rhobj1);
        //Thread.Sleep(100);
    }

    return Result.Success;
}

public Rhino.Commands.Result TransformBrep(ref Rhino.RhinoDoc doc, Rhino.DocObjects.ObjRef rhobj1)
{

    double deg = 10.0;
    double rad = (22.0 / 7.0) / 180.0 * deg;
    Point3d cen = new Point3d(0,0,0);

    Transform xform = Rhino.Geometry.Transform.Rotation(rad, cen);

    currentTransform = currentTransform * xform ;
    //currentTransform = xform * currentTransform; // tried both

    doc.Objects.Transform(rhobj1, currentTransform, true);

    doc.Views.Redraw();

    return Rhino.Commands.Result.Success;
}

Transform currentTransform;

}

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