From the source:
/*
** Internal representation of a polygon.
**
** The polygon consists of a sequence of vertexes. There is a line
** segment between each pair of vertexes, and one final segment from
** the last vertex back to the first. (This differs from the GeoJSON
** standard in which the final vertex is a repeat of the first.)
**
** The polygon follows the right-hand rule. The area to the right of
** each segment is "outside" and the area to the left is "inside".
**
** The on-disk representation consists of a 4-byte header followed by
** the values. The 4-byte header is:
**
** encoding (1 byte) 0=big-endian, 1=little-endian
** nvertex (3 bytes) Number of vertexes as a big-endian integer
**
** Enough space is allocated for 4 coordinates, to work around over-zealous
** warnings coming from some compiler (notably, clang). In reality, the size
** of each GeoPoly memory allocate is adjusted as necessary so that the
** GeoPoly.a[] array at the end is the appropriate size.
*/
typedef struct GeoPoly GeoPoly;
struct GeoPoly {
int nVertex; /* Number of vertexes */
unsigned char hdr[4]; /* Header for on-disk representation */
GeoCoord a[8]; /* 2*nVertex values. X (longitude) first, then Y */
};
---
The fact that there's a Highway to Hell but only a Stairway to Heaven says a
lot about anticipated traffic volume.
>-----Original Message-----
>From: sqlite-users [mailto:sqlite-users-
>[email protected]] On Behalf Of Thomas Kurz
>Sent: Friday, 19 October, 2018 09:17
>To: SQLite mailing list
>Subject: Re: [sqlite] geopoly data input options
>
>> Beginning with the next release, polygons will always be stored in
>the
>> binary format.
>
>Is the SQLite binary encoding identical to the Well-Known-Binary
>geometry format?
>
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