CGAL users discussion list

[Mael <>]

I see. No, you do not have access to the cost functor in the placement.

However, this is indeed often the case that the "placement" and "cost" 
functors are going to do similar things. But you do not exactly need the 
cost functor itself, you can simply do the same computations (code) that 
you are doing in the "cost" functor, but in the placement "functor". On 
CGAL side, this happens for a few simplification methods, and we simply 
factorize this code into a class called "****_core.h" which the "cost" 
and "placement" functors are then both using (see for example 
Lindstrom-Turk, and the upcoming Garland-Heckbert methods).

Best,
Mael

On 15/10/2019 12:29, tdchen wrote:
> Sorry for my poor english.
> What I want to ask is that if I can call cost function in placement function
> to finally decide the placement.
> I mean in the placement function I will try several places and compare their
> costs, finally set the placement in the place with the lowest cost.
> I am new with STL, and now I just think a policy is a function.
>
>
>
>
> --
> Sent from: http://cgal-discuss.949826.n4.nabble.com/