/// <summary>
/// Creates a new Polyline that is the result of projecting the Polyline3d parallel to 'direction' onto 'plane' and returns it.
/// </summary>
/// <param name="pline">The polyline to project.</param>
/// <param name="plane">The plane onto which the curve is to be projected.</param>
/// <param name="direction">Direction (in WCS coordinates) of the projection.</param>
/// <returns>The projected Polyline.</returns>
public static Polyline GetProjectedPolyline(this Polyline3d pline, Plane plane, Vector3d direction)
{
if (plane.Normal.IsPerpendicularTo(direction, new Tolerance(1e-9, 1e-9)))
{
return(null);
}
return(GeomExt.ProjectPolyline(pline, plane, direction));
}
/// <summary>
/// Creates a new Polyline that is the result of projecting the Polyline2d parallel to 'direction' onto 'plane' and returns it.
/// </summary>
/// <param name="pline">The polyline to project.</param>
/// <param name="plane">The plane onto which the curve is to be projected.</param>
/// <param name="direction">Direction (in WCS coordinates) of the projection.</param>
/// <returns>The projected Polyline.</returns>
public static Polyline GetProjectedPolyline(this Polyline2d pline, Plane plane, Vector3d direction)
{
Tolerance tol = new Tolerance(1e-9, 1e-9);
if (plane.Normal.IsPerpendicularTo(direction, tol))
{
return(null);
}
if (pline.Normal.IsPerpendicularTo(direction, tol))
{
Plane dirPlane = new Plane(Point3d.Origin, direction);
if (!pline.IsWriteEnabled)
{
pline.UpgradeOpen();
}
pline.TransformBy(Matrix3d.WorldToPlane(dirPlane));
Extents3d extents = pline.GeometricExtents;
pline.TransformBy(Matrix3d.PlaneToWorld(dirPlane));
return(GeomExt.ProjectExtents(extents, plane, direction, dirPlane));
}
return(GeomExt.ProjectPolyline(pline, plane, direction));
}
