CGAL users discussion list

[Narusaki <>]

Sebastien Loriot (GeometryFactory) wrote
> On 02/19/2015 11:18 AM, Narusaki wrote:
>> Hi Sebastien,
>>
>> Thank you for the reply. I've found the bug for the extra ray -- it's
>> because I thought the pleft/pright of the hyperbola mean the left/right
>> branch, but it turns out it means the left/right part of the branch
>> according to the axis.
>>
>> Now it only leaves me with the problem of the shape of the hyperbola. I
>> gradually multiply each site (x, y, z) by 10^0, 10^1, ..., etc. and the
>> hyperbola seems to be more and more smooth. I've checked the points
>> generated by the function you've mentioned, and it's indeed about 100
>> points
> Where are these points then?
> 
> Sebastien.
> 
>> (with an extra one) for whether there is a multiplier for each site or
>> not.
>> For example, the following two pics are corresponding to multiply the
>> sites
>> by 10^0 and 10^1 separately:
>>
>> <http://cgal-discuss.949826.n4.nabble.com/file/n4660484/p1.png>
>> <http://cgal-discuss.949826.n4.nabble.com/file/n4660484/p2.png>
>>
>> It seems that the first one is approximated by two line segment and the
>> the
>> second one is approximated by four. I've tried to use the kernel you
>> mentioned but that doesn't help, and as I've mentioned above, the
>> generated
>> points number seems to be no problem.
>>
>> So what the problem could be now?
> 
> Well just on the line segments in the former pics, I guess. Since I'm
> rendering the hyperbola by each of its small line segments myself, I think
> this shouldn't be the problem.
> 
> And as I'm reading the Hyperbola_2.h file, I found there're two versions
> of generate_points() method, and in the one with the "_qt" suffix (which I
> think it may serve for the rendering in the qt GUI framework), I saw the
> STEP variable is set according to the size of the window, which is
> obviously skipped in the raw generate_points() method. Could this be the
> problem? 
>>
>>
>>
>> --
>> View this message in context:
>> http://cgal-discuss.949826.n4.nabble.com/Dual-edge-of-Apollonius-Graph-tp4660456p4660484.html
>> Sent from the cgal-discuss mailing list archive at Nabble.com.
>>
> 
> 
> -- 
> You are currently subscribed to cgal-discuss.
> To unsubscribe or access the archives, go to
> https://sympa.inria.fr/sympa/info/cgal-discuss





--
View this message in context: 
http://cgal-discuss.949826.n4.nabble.com/Dual-edge-of-Apollonius-Graph-tp4660456p4660490.html
Sent from the cgal-discuss mailing list archive at Nabble.com.