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A new Flyspray task has been opened.  Details are below.

User who did this: - Carsten Gräser (Carsten)

Attached to Project - Dune
Summary - indicex() method for GeometryType
Task Type - Feature Request
Category - Common
Status - New
Assigned To - 
Operating System - All
Severity - Low
Priority - Normal
Reported Version - SVN
Due in Version - 
Due Date - Undecided
Details - I suggest to add an index to each GeometryType for the
following reasons:

1)Since indices are only consecutive within one GeometryType, one can
not avoid an GeometryType->something map if you want to associate
Information to an entity. This could be 'map<GeometryType,vector>' or
'map<GeometryType,someIndexOffset>'. But even if the map is small this
is slower then a corresponding 'vector<vector>' or
'vector<someIndexOffset>' approach. Having an index one could use this
faster approach.

2)For the current GeometryTypes this could be computed on the fly by
unsigned int index() const {if (dim_<2) return dim_; return 4*dim_ +
basicType_ - 6;}

3)This improvement might be small in general, but if you do a lot of
index/subindex operations and no or just a few numerical computations
it is significant, especially in combination with FS#246.


More information can be found at the following URL:
http://hal.iwr.uni-heidelberg.de/flyspray/?do=details&id=247

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