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[Yue Biek <>]

Thank you very much!

2011/7/18 Sebastien Loriot (GeometryFactory) <sloriot.ml@gmail.com>

The type-equality wrapper (making Kernel::Point_2 and Point_2<Kernel> identical, C_Point_2 in your case) only exposes constructors of
Point_2<Kernel>.

We are currently thinking about a solution to blindly (but type-safely)
forward constructors.

In your case, C_Kernel::Point_2 (which is CGAL::Point_2<C_Kernel>)
inherits from C_Point2. You can do something like this for example:

Point p(C_Point2(1.0f,2.0f,3,2));

In passing x() const should return a const reference otherwise
const cartesian iterator is using a reference to a temporary
(same for y() const)

Sebastien.

Yue Biek wrote:

Hi,
      When I study the  Extensible Kernel,I meet a problem,which described as follows:
I wish to create a C_Kernel for my C_Point2 class(all in the attachment), and I create a constructor initializer for the C_point2 class which takes four parameters.the pronlem turns out as i wish to initialize the point. part of the code in the *C_Kernel* is:

    *     typedef   C_Point2  Point_2*
***
*      in *main()* I just call the constructor initializer *
*
*         Point p(1.0f,2.0f,3,2)*

then it turns out to wrong,complier says that the class has no constructor initializer that takes 4  parameters.
And i found the Point_2 is not the point which I defined in the C_Point2 ,But when i changed the code as  
*        typedef C_Point2      Point*.

Then the program go right. I wish to know why? May be my depict are not clear,a example has been attached
 in the  attachment and my complier is VS2008 in Win7.                                                                                                                                                            Thank you!

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