Re: [Openev-discuss] gvgeocoord data type name change done!

[Frank W. <war...@po...>]

s duclos wrote:
> Hi,
> 
> The change have been commited.
> 
> To switch openev to double for geometric
> coord. data type uncomment:
> 
> //#define GV_USE_DOUBLE_PRECISION_COORD
> 
> in gvtypes.h:65
> 
> Then make clean and make.
> 
> File affected are listed bellow.
> 
> 
> rgds,
> 
> Sylvain.

Sylvain,

I have tested out your changes and they seem to work well with either
float or double.  I did a little test to see if using double improved
problems with floating point vector location representation (ie. jitter
as I zoom in), but I wasn't able to establish that the "double" build was
any better.  Is it possible that some OpenGL implementation use floating
point for the internal geometry pipeline, negating much of the value of
working in double precision?

PS. I added a --with-double-geocoord configure option on Linux.

Best regards,

-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, war...@po...
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