/// <summary> RunCommandPickPlane is a helper method for picking an existing surface to draw on </summary>
/// <param name="mRhinoDoc"></param>
/// <param name="mode"></param>
/// <returns></returns>
protected Result RunCommandPickPlane(RhinoDoc mRhinoDoc, RunMode mode)
{
//routine for picking an existing surface to draw on
//please select a plane
Rhino.DocObjects.ObjectType filter = Rhino.DocObjects.ObjectType.Surface;
Rhino.DocObjects.ObjRef objref = null;
Rhino.Commands.Result rc = Rhino.Input.RhinoGet.GetOneObject("Select surface", false, filter, out objref);
if (rc != Rhino.Commands.Result.Success || objref == null)
{
return(rc);
}
Rhino.Geometry.Surface refSrf = objref.Surface();
refSrf.FrameAt(.5, .5, out plane1);
Point3d pOrigin = refSrf.PointAt(1, 1);
Point3d pY = refSrf.PointAt(0.5, 1);
Point3d pX = refSrf.PointAt(1, 0.75);
Vector3d vX = Rhino.Geometry.Point3d.Subtract(pX, pOrigin);
Vector3d vY = Rhino.Geometry.Point3d.Subtract(pY, pOrigin);
plane1 = new Plane(pOrigin, vX, vY);
Rhino.DocObjects.RhinoObject rhobj = objref.Object();
rhobj.Select(false);
mRhinoDoc.Objects.AddPoint(pOrigin);
mRhinoDoc.Objects.AddPoint(pX);
mRhinoDoc.Objects.AddPoint(pY);
mRhinoDoc.Views.Redraw();
return(Result.Success);
}