[postgis-users] LWGEOM -- initial lwgeom.h file

[David Blasby]

I quickly put together a lwgeom.h file so you could see what the lwgeom 
type will look like and the basic API for it.

If folks could take a look and give me some feedback, I'll incorporate 
your suggestions.

As I note in the header, the "get" functions for the LWGEOM might be 
slow, so we might want to make an "analysed lwgeom" that pre-computes 
the position of the actual sub-geometries.

typedef struct
{
	char    *serialized_form;
	char    **subgeometries;
	int     numSubGeometries;
} LWGEOM_analysed;

and :

lwgeom_getsubgeometry(serialized_form, n) == 
<LWGEOM_analysed>.subgeometries[n]

dave
ps. C really sucks compared to C++ and Java!
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