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cache as long as tolerance doesn't change

innermost-point
Mike Barry 2023-11-14 06:20:32 -05:00
rodzic 5f4d445ee5
commit 1e12f1c35d
1 zmienionych plików z 8 dodań i 1 usunięć
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9
planetiler-core/src/main/java/com/onthegomap/planetiler/reader/SourceFeature.java
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@ -35,6 +35,8 @@ public abstract class SourceFeature implements WithTags, WithGeometryType {
private Geometry centroid = null;
private Geometry pointOnSurface = null;
private Geometry centroidIfConvex = null;
private double innermostPointTolerance = Double.NaN;
private Geometry innermostPoint = null;
private Geometry linearGeometry = null;
private Geometry polygonGeometry = null;
private Geometry validPolygon = null;
@ -136,7 +138,12 @@ public abstract class SourceFeature implements WithTags, WithGeometryType {
*/
public final Geometry innermostPoint(double tolerance) throws GeometryException {
if (canBePolygon()) {
return MaximumInscribedCircle.getCenter(polygon(), Math.sqrt(area()) * tolerance);
// cache as long as the tolerance hasn't changed
if (tolerance != innermostPointTolerance || innermostPoint == null) {
innermostPoint = MaximumInscribedCircle.getCenter(polygon(), Math.sqrt(area()) * tolerance);
innermostPointTolerance = tolerance;
}
return innermostPoint;
} else {
return pointOnSurface();
}