[geos-devel] GEOS for 3/more-dimensional polyhedra

[Paul Ramsey]

Muthu,
While more effective handling of higher dimensions is something we are considering in the near/medium term, actually doing volumetric calculations is something that goes far beyond simply handling the extra coordinate dimensions, and is not in any developers roap map to my knowledge.
Your best bet, in python, would be researching Python bindings into CGAL, which not only already handles the extra dimensionality but also already has numerous algorithms for calculations against volumetric types.
P

> On Mar 29, 2022, at 8:04 AM, Muthu Vallinayagam <muthu.vallin at gmail.com> wrote:
> 
> Dear GEOS developers and users,
> 
> first, I thank developers for developing geos. I am using it, but indirectly, via the Shapely package.
> 
> I am using Shapely for my project, which deals with 2-dimensional Polygons. I need such a package
> for 3-dimensional polyhedra and in later cases for 4-d, 5-d, etc., But presently Shapely supports only
> 2-dimensional polygons since GEOS supports only 2-dimension.
> 
> so I would like to request the developers about the addition of a 3-dimension feature in GEOS.
> I hope that it is to activate one more dimension in the C/C++ array and change respective algorithms
> in set operation definitions. 
> 
> Also using calloc and malloc we can leave array dimensions to be filled dynamically. for example, if Geos
> is exported as a module in python script, the first thing user can set the array dimension as per the needs. 
> If they deal with polygons the dimension is set to be 2 and for polyhedra, it is 3.
> 
> 
> My overall needs are Polygon, Multipolygons, Union, and the intersection of multipolygons. So 
> 
> If I want to change the libs in GEOS what are the libs should I change first?
> is it enough, if I change only the dimension of the array and Set operation definitions in GEOS library for further applications in higher dimensions? 
> 
> Looking forward to your hearing 
> 
> thank you 
> ----
> Best regards
> Muthu Vallinayagam,
> Postdoctorate,
> Institute for Experimental physics,
> TU Freiberg, Germany
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