Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Add polygon index intersection utility #866

Merged
merged 2 commits into from
Apr 10, 2024
Merged

Add polygon index intersection utility #866

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
a3d0f9e
add polygon index intersection utility
msbarry Apr 10, 2024
026f3e4
record pattern
msbarry Apr 10, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
22 changes: 20 additions & 2 deletions planetiler-core/src/main/java/com/onthegomap/planetiler/geo/PolygonIndex.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -57,11 +57,29 @@ public List<T> getContaining(Point point) {
return postFilterContaining(point, items);
}

/** Returns the data associated with all polygons containing {@code point}. */
public List<T> getIntersecting(Geometry geom) {
build();
List<?> items = index.query(geom.getEnvelopeInternal());
return postFilterIntersecting(geom, items);
}

private List<T> postFilterContaining(Point point, List<?> items) {
List<T> result = new ArrayList<>(items.size());
for (Object item : items) {
if (item instanceof GeomWithData<?> value && value.poly.contains(point)) {
@SuppressWarnings("unchecked") T t = (T) value.data;
if (item instanceof GeomWithData<?>(var poly,var data) && poly.contains(point)) {
@SuppressWarnings("unchecked") T t = (T) data;
result.add(t);
}
}
return result;
}

private List<T> postFilterIntersecting(Geometry geom, List<?> items) {
List<T> result = new ArrayList<>(items.size());
for (Object item : items) {
if (item instanceof GeomWithData<?>(var poly,var data) && poly.intersects(geom)) {
@SuppressWarnings("unchecked") T t = (T) data;
result.add(t);
}
}
Expand Down
6 changes: 6 additions & 0 deletions planetiler-core/src/test/java/com/onthegomap/planetiler/geo/PolygonIndexTest.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -21,10 +21,13 @@ void testEmpty() {
void testSingle() {
index.put(rectangle(0, 1), 1);
assertListsContainSameElements(List.of(1), index.getContaining(newPoint(0.5, 0.5)));
assertListsContainSameElements(List.of(1), index.getIntersecting(newPoint(0.5, 0.5)));
assertListsContainSameElements(List.of(1), index.getIntersecting(rectangle(1, 2)));
assertListsContainSameElements(List.of(1), index.getContainingOrNearest(newPoint(0.5, 0.5)));

assertListsContainSameElements(List.of(), index.getContaining(newPoint(1.5, 1.5)));
assertListsContainSameElements(List.of(), index.getContainingOrNearest(newPoint(1.5, 1.5)));
assertListsContainSameElements(List.of(), index.getIntersecting(rectangle(2, 3)));
}

@Test
Expand All @@ -33,6 +36,9 @@ void testMultipleIdentical() {
index.put(rectangle(0, 1), 2);
assertListsContainSameElements(List.of(1, 2), index.getContaining(newPoint(0.5, 0.5)));
assertListsContainSameElements(List.of(1, 2), index.getContainingOrNearest(newPoint(0.5, 0.5)));
assertListsContainSameElements(List.of(1, 2), index.getIntersecting(rectangle(0.5, 1.5)));
assertListsContainSameElements(List.of(1, 2), index.getIntersecting(rectangle(1, 2)));
assertListsContainSameElements(List.of(), index.getIntersecting(rectangle(2, 3)));
}

@Test
Expand Down
Loading