Eric Fischer
1f8b6faec8
Simplify lines consistently on opposite sides of tile boundaries
2016-01-07 11:35:11 -08:00
Eric Fischer
f43d18eb73
Bring back the old simple polygon clipping algorithm
2016-01-04 17:31:33 -08:00
Eric Fischer
228a4d6bb9
Make the geometric origin a per-reader property for thread safety
2015-12-22 16:58:27 -08:00
Eric Fischer
cf279940da
Don't simplify "unused" movetos from points. Don't write empty geometries.
2015-12-11 12:34:55 -08:00
Eric Fischer
f04c5e153a
Avoid arithmetic overflow in area calculation
2015-12-09 15:02:59 -08:00
Eric Fischer
4bde17f8ff
Remove unnecessary coordinate offsetting. Negative coordinates are OK.
2015-12-08 17:21:59 -08:00
Eric Fischer
dace304182
Offset coordinates for Clipper to keep them positive.
...
Limit very high or low latitudes and longitudes.
2015-12-08 16:24:17 -08:00
Eric Fischer
36f4f77640
Another polygon fix: if the outer ring was dropped, drop its inner rings too
2015-11-02 11:43:44 -08:00
Eric Fischer
358e9cad5b
Use closepath for each polygon ring to match the vector tile spec
2015-10-28 14:34:57 -07:00
Eric Fischer
e554a121fb
Fix formatting
2015-10-20 12:03:49 -07:00
Eric Fischer
f64e2c94e2
Let Clipper clean up polygons again after scaling and simplification
2015-10-15 17:11:29 -07:00
Eric Fischer
6a1895547d
Reduce minimum polygon size for less blocky appearance
2015-10-14 15:51:11 -07:00
Eric Fischer
592c47c549
Fix signedness warnings
2015-10-14 12:24:18 -07:00
Eric Fischer
2b25c2fe3e
Use Clipper for polygon clipping instead of my own implementation
2015-10-13 17:25:01 -07:00
Eric Fischer
329f041bf2
Remove closepath expectation in polygon thinning
2015-10-07 17:11:58 -07:00
Eric Fischer
5dc9f50345
Clean up polygon generation and clipping. Make sure winding order is correct.
2015-10-07 16:52:52 -07:00
Eric Fischer
18cdcb0732
Drop linetos smaller than tile resolution before doing normal simplification
...
Since simplification is rather expensive
2015-07-01 12:16:50 -07:00
Eric Fischer
a185073f0a
Shrink the geometry by shaving off bits below the maxzoom tile resolution
2015-06-18 14:16:16 -07:00
Eric Fischer
1a44538bdf
Use the first coordinates of the first feature as the origin for deltas
2015-06-18 10:52:01 -07:00
Eric Fischer
46626e4f08
Delta encoding for motion within features
2015-06-17 17:48:29 -07:00
Eric Fischer
8a1f0d83e1
Consistent indent style with clang-format
2015-06-03 11:22:13 -07:00
Eric Fischer
105dfa73d7
Use bounding box for quick accept/reject before detailed clipping.
2014-12-11 13:34:50 -08:00
Eric Fischer
380550ce85
Remember to remove the closepath after clipping away a polygon
2014-12-04 14:54:11 -08:00
Eric Fischer
b7b476b36c
Don't introduce bogus geometries in clipped-away features.
2014-12-03 16:30:35 -08:00
Eric Fischer
08ff40e42f
Trying to follow Vlad's suggestion and work from the top down.
...
Doesn't quite work yet, but seems like the right thing to do.
From the bottom up, indexing is a mess because of the buffering,
and includes unneeded areas in the bounding boxes of big features.
2014-12-03 16:18:43 -08:00
Eric Fischer
eaeb55bf71
Distinguish between signed and unsigned in the temporary file
2014-12-02 18:03:07 -08:00
Eric Fischer
1aea522ef5
Fix another overflow that broke line clipping at zoom level 1.
2014-11-07 12:51:26 -08:00
Eric Fischer
241d96e57c
Save a few more bytes per geometry in the temporary file
...
by using bytes instead of ints for the drawing operations
2014-11-05 14:37:54 -08:00
Eric Fischer
a09bf3469d
Fix line clipping overflow bug
2014-10-27 14:24:11 -07:00
Eric Fischer
3cd6fcfbe0
Add option to set buffer size. Pass it through to clipping functions.
2014-10-27 13:20:17 -07:00
Eric Fischer
9bb4a549ca
Silence warnings about unused variables
2014-10-24 17:24:04 -07:00
Eric Fischer
46100c34df
Move projection and tile arithmetic to its own file
2014-10-24 17:22:14 -07:00
Eric Fischer
754dbf152a
Remove dead code
2014-10-24 15:23:35 -07:00
Eric Fischer
17384d5da7
Move geometric transformations into their own file
2014-10-24 15:12:02 -07:00
