[GraphHopper] TurnCosts for CH

[Peter]

Hi!

> I'm as yet in progress to full understanding how CH works. Described
> problem i temporarily fixed by not to call "disconnect" after
> contracting node (i don't know how important it is - in 0.3 was
> "removeHigher2LowerEdges" flag).

Not sure what you mean here, but this is no longer necessary in 0.4

>
> Unfortunately we can't afford be yours sponsor, but idea about crowd
> funding sounds good.
> Anyway i continue to trying to implement this.

Trust me: implementing this on your own will be a lot more expensive
than sponsoring :)

Regards,
Peter

>
> 17.03.2015 13:16, Peter пишет:
>> Hi,
>>
>>> it's not possible because both directions stop on high-level nodes on
>> different edges.
>>
>> The search will be edge based and so the edges will be identical.
>>
>> There is an issue for this #270, where we list the major problems with
>> turn costs and CH. This requires knowledge with CH and also some GH
>> internals. I guess this will take us roughly 2-4 full time weeks. As
>> this is relative unattractive long but very important (for us too) what
>> do you think about a crowd funding campaign?
>> Where every company in the need could sponsor us with only a fraction of
>> the costs. (And we would also sponsor the majority of our time for this)
>>
>> Do not hesitate to contact me off-list if you or others are interested!
>>
>> Kind Regards,
>> Peter
>>
>> On 16.03.2015 12:57, dos65 wrote:
>>> Hi, I’m trying to implement turn costs for CH.
>>> TurnCosts works only with edge-based traversal mode and the condition
>>> for finding path is reaching same node and same edge for both
>>> directions. But with levelGraph it's not possible because both
>>> directions stop on high-level nodes on different edges. Do you have
>>> any ideas about that?
>>