drh
5f8cb730af
Replace the new geopoly_reverse() function with geopoly_ccw(). The
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geopoly_ccw() function only reverses the vertex order if doing so is necessary
to get the correct right-hand winding rule on the polygon.
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2018-10-08 18:55:56 +00:00
drh
bc36320f02
Add the geopoly_reverse() function to the GeoPoly extension.
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2018-10-08 12:58:59 +00:00
drh
bebf54438e
Changes to geopoly to silience false-positive warnings coming out of clang.
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2018-10-05 15:10:00 +00:00
drh
60afcb80ee
Add the geopoly_regular(X,Y,R,N) function to the geopoly extension.
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2018-09-28 14:01:17 +00:00
drh
601c8f2829
Make most geopoly functions pure.
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2018-09-28 13:18:24 +00:00
drh
b2d83494d3
Rig geopoly to use sqlite3AtoF() if it is available, as that routine is much
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faster than atof().
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2018-09-28 00:16:57 +00:00
drh
17e65ae4c0
Small performance optimization in the JSON parser of Geopoly.
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2018-09-27 23:57:45 +00:00
drh
50db3e8d51
Enhance the GeoPOLY extension so that it always stores its polygons in the
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binary format, which is faster and more compact.
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2018-09-27 20:37:52 +00:00
mistachkin
ed008ecede
Fix some harmless compiler warnings seen with MSVC.
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2018-09-12 01:05:26 +00:00
mistachkin
3c4b61333f
Fix harmless compiler warning.
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2018-09-06 16:47:10 +00:00
drh
a83a74c428
Fix excess memory usage in the JSON parser of GEOPOLY.
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2018-09-06 11:14:17 +00:00
drh
9a09b7b31d
Fix a problem with geopoly trying to update both the _shape and an auxiliary
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column in the same UPDATE statement.
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2018-09-06 02:40:15 +00:00
drh
17f19eadb8
Fixes to the UPDATE logic in Geopoly.
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2018-08-29 20:52:40 +00:00
drh
c0d2117f1c
Add the geopoly_group_bbox() aggregate function to the Geopoly module.
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2018-08-29 15:50:47 +00:00
drh
58726ca4b9
Stricter enforcement of the JSON and GeoJSON standards in the Geopoly extension.
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2018-08-28 19:23:41 +00:00
drh
79931a1517
Fix new issues in the geopoly module discovered by TH3.
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2018-08-28 15:51:10 +00:00
drh
b2a18c95f0
Split the three-argument version of geopoly_within() off into a separate
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function named geopoly_contains_point().
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2018-08-27 15:55:37 +00:00
drh
e6474b77b8
Enhance the geopoly virtual table so that it does a better job of optimizing
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geopoly_within() queries.
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2018-08-25 23:03:27 +00:00
drh
27d62540e5
Provide the two-argument geopoly_within(P1,P2) routine that determines if
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polygon P2 is contained within polygon P1. Make this function available to
the query planner for optimized rtree lookups. Update the visual01.txt
script to verify that the new functionality actually works.
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2018-08-25 19:51:49 +00:00
drh
95327f539b
Fix a harmless compiler warning.
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2018-08-25 18:57:12 +00:00
drh
b7d376ee13
Fix a problem in the geopoly json parser associated with spaces before a
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coordinate number.
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2018-05-29 17:17:22 +00:00
drh
b0af3d1f97
The geopoly virtual table seems to be working. But only thinly tested so far.
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2018-05-28 23:59:03 +00:00
drh
48e4ef56c3
Untested incremental check-in. Add the geopoly_xform() function. Complete
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basic logic for the geopoly virtual table.
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2018-05-28 13:23:23 +00:00
drh
f403e1af0b
Minor correction.
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2018-05-26 12:21:21 +00:00
drh
ecdc742790
Untested incremental check-in. Basic infrastructure for geopoly in place,
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except for the MATCH operator.
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2018-05-25 22:39:29 +00:00
drh
66c43599ce
Incremental check-in: Progress toward implementing the geopoly vtab.
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2018-05-25 20:53:42 +00:00
drh
748b8fda90
Forward port the geopoly extension functions into the r-tree extension,
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with the idea of creating a new spatial index based on simply polygons.
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2018-05-25 19:22:47 +00:00
