public override bool CustomGeometryFilter(IRhinoObject obj, IOnGeometry geo, OnCOMPONENT_INDEX ci)
{
if (geo != null)
{
IOnCurve crv = OnCurve.ConstCast(geo);
if (crv != null)
{
if (crv.IsClosed() && crv.IsPlanar())
{
return(true);
}
else
{
return(false);
}
}
IOnBrep brep = OnBrep.ConstCast(geo);
if (brep != null)
{
if (brep.m_F.Count() == 1)
{
return(true);
}
else
{
return(false);
}
}
IOnSurface srf = OnSurface.ConstCast(geo);
if (srf != null)
{
return(true);
}
IOnMesh mesh = OnMesh.ConstCast(geo);
if (mesh != null)
{
return(true);
}
}
return(false);
}
private static double GetCurveArea(IOnCurve crv, double tol)
{
double area = 0.0;
if (null != crv && crv.IsClosed())
{
OnPlane plane = new OnPlane();
if (crv.IsPlanar(plane, tol))
{
OnBoundingBox bbox = crv.BoundingBox();
On3dPoint point = plane.ClosestPointTo(bbox.Center());
OnMassProperties mp = new OnMassProperties();
if (crv.AreaMassProperties(point, plane.Normal(), ref mp))
{
area = Math.Abs(mp.Area());
}
}
}
return(area);
}
private static double GetCurveArea(IOnCurve crv, double tol)
{
double area = 0.0;
if (null != crv && crv.IsClosed())
{
OnPlane plane = new OnPlane();
if (crv.IsPlanar(plane, tol))
{
OnBoundingBox bbox = crv.BoundingBox();
On3dPoint point = plane.ClosestPointTo(bbox.Center());
OnMassProperties mp = new OnMassProperties();
if (crv.AreaMassProperties(point, plane.Normal(), ref mp))
area = Math.Abs(mp.Area());
}
}
return area;
}
