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Round instead of truncating when clipping lines

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Erica Fischer
2023-09-07 16:25:16 -07:00
parent 32acc8b63f
commit db032c746a
2 changed files with 4 additions and 4 deletions
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geometry.cpp
+2 -2
View File
@@ -813,8 +813,8 @@ drawvec clip_lines(drawvec &geom, long long minx, long long miny, long long maxx
int c = clip(&x1, &y1, &x2, &y2, minx, miny, maxx, maxy);
if (c > 1) { // clipped
out.push_back(draw(VT_MOVETO, x1, y1));
out.push_back(draw(VT_LINETO, x2, y2));
out.push_back(draw(VT_MOVETO, std::round(x1), std::round(y1)));
out.push_back(draw(VT_LINETO, std::round(x2), std::round(y2)));
out.push_back(draw(VT_MOVETO, geom[i].x, geom[i].y));
} else if (c == 1) { // unchanged
out.push_back(geom[i]);
tests/ne_110m_admin_1_states_provinces_lines/out/-z0_--clip-bounding-box_-110,27,-92,52.json
+2 -2
View File
@@ -14,8 +14,6 @@
}, "features": [
{ "type": "FeatureCollection", "properties": { "zoom": 0, "x": 0, "y": 0 }, "features": [
{ "type": "FeatureCollection", "properties": { "layer": "in", "version": 2, "extent": 4096 }, "features": [
{ "type": "Feature", "properties": { "scalerank": 2, "featurecla": "Admin-1 boundary", "adm0_a3": "USA", "adm0_name": "United States of America", "mapcolor9": 1, "mapcolor13": 1 }, "geometry": { "type": "LineString", "coordinates": [ [ -110.039062, 41.046217 ], [ -109.072266, 40.979898 ] ] } }
,
{ "type": "Feature", "properties": { "scalerank": 2, "featurecla": "Admin-1 boundary", "adm0_a3": "USA", "adm0_name": "United States of America", "mapcolor9": 1, "mapcolor13": 1 }, "geometry": { "type": "LineString", "coordinates": [ [ -110.039062, 45.026950 ], [ -104.062500, 45.026950 ] ] } }
,
{ "type": "Feature", "properties": { "scalerank": 2, "featurecla": "Admin-1 boundary", "adm0_a3": "USA", "adm0_name": "United States of America", "mapcolor9": 1, "mapcolor13": 1 }, "geometry": { "type": "LineString", "coordinates": [ [ -104.062500, 45.951150 ], [ -104.062500, 48.980217 ] ] } }
@@ -42,6 +40,8 @@
,
{ "type": "Feature", "properties": { "scalerank": 2, "featurecla": "Admin-1 boundary", "adm0_a3": "USA", "adm0_name": "United States of America", "mapcolor9": 1, "mapcolor13": 1 }, "geometry": { "type": "LineString", "coordinates": [ [ -92.021484, 43.516689 ], [ -96.416016, 43.516689 ] ] } }
,
{ "type": "Feature", "properties": { "scalerank": 2, "featurecla": "Admin-1 boundary", "adm0_a3": "USA", "adm0_name": "United States of America", "mapcolor9": 1, "mapcolor13": 1 }, "geometry": { "type": "LineString", "coordinates": [ [ -110.039062, 40.979898 ], [ -109.072266, 40.979898 ] ] } }
,
{ "type": "Feature", "properties": { "scalerank": 2, "featurecla": "Admin-1 boundary", "adm0_a3": "USA", "adm0_name": "United States of America", "mapcolor9": 1, "mapcolor13": 1 }, "geometry": { "type": "LineString", "coordinates": [ [ -104.062500, 40.979898 ], [ -109.072266, 40.979898 ] ] } }
,
{ "type": "Feature", "properties": { "scalerank": 2, "featurecla": "Admin-1 boundary", "adm0_a3": "USA", "adm0_name": "United States of America", "mapcolor9": 1, "mapcolor13": 1 }, "geometry": { "type": "LineString", "coordinates": [ [ -110.039062, 37.020098 ], [ -109.072266, 37.020098 ] ] } }