CGAL users discussion list

[Oleg <>]

Yes, more general shapes. The final goal is to make uniform meshes for
bodies composed of general shapes with sharp boundaries between them.

Oleg

Thursday, March 7, 2013, 17:23, you wrote:
> What is the final goal? Only mesh 3 spheres? mesh n spheres? or more
> general shapes?

> I ask the question because the answer then varies.

> Sebastien.

> On 03/07/2013 11:16 AM, Oleg wrote:
>> Thursday, March 7, 2013, 16:53, you wrote:
>>  > Le jeudi 07 mars 2013 00:00:11 Oleg a écrit :
>>  >> Hello everyone! I have a question regarding triangulation
>> optimization. I
>>  >> make a mesh for 3 balls intersection with 3 1D features. The mesh is
>> uniform
>>  >> everywhere except 2 points where the 3 boundaries intersect:
>>  >> <http://cgal-discuss.949826.n4.nabble.com/file/n4656843/3balls.gif>
>>  >> These points don't seem to represent any problem for a manual meshing,
>>  >> because the boundaries intersect at large angles. Is there any easy
>> way to
>>  >> optimize the mesh around these points to avoid the unnecessary
>> crowding? Any
>>  >> ideas will be greatly appreciated.
>>
>>  > In your example, I assume that you have computed the intersections of
>> spheres
>>  > and set them as 1D features of the domain. When 1D-features
>> intersect, you
>>  > need to split them first at the intersection points. That will make the
>>  > special intersections points as "corner points" of the domain, and
>> fix the
>>  > crowding you see in the result.
>>
>> You're right, that's what I did. I'll try what you recommend, thanks!
>> Just another quick question - what would be the best way to find
>> intersection points of two polylines? Keeping in mind that the
>> polylines may not intersect in one exact point but rather pass by
>> each other at a small distance..?
>>
>> Oleg
>>
>>
>> ------------------------------------------------------------------------
>> View this message in context: Re[2]: Triangulation optimization around
>> special points
>> <http://cgal-discuss.949826.n4.nabble.com/Triangulation-optimization-around-special-points-tp4656843p4656846.html>
>> Sent from the cgal-discuss mailing list archive
>> <http://cgal-discuss.949826.n4.nabble.com/> at Nabble.com.

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