@Override
public Rectangle calcBoxByDistFromPt(
Point from, double distDEG, SpatialContext ctx, Rectangle reuse) {
double minX = from.getX() - distDEG;
double maxX = from.getX() + distDEG;
double minY = from.getY() - distDEG;
double maxY = from.getY() + distDEG;
if (reuse == null) {
return ctx.makeRectangle(minX, maxX, minY, maxY);
} else {
reuse.reset(minX, maxX, minY, maxY);
return reuse;
}
}
/**
* Spatial4J shapes have no knowledge of directed edges. For this reason, a bounding box that
* wraps the dateline can have a min longitude that is mathematically > than the Rectangles'
* minX value. This is an issue for geometric collections (e.g., MultiPolygon and ShapeCollection)
* Until geometry logic can be cleaned up in Spatial4J, ES provides the following expansion
* algorithm for GeometryCollections
*/
private Rectangle expandBBox(Rectangle bbox, Rectangle expand) {
if (bbox.equals(expand) || bbox.equals(SpatialContext.GEO.getWorldBounds())) {
return bbox;
}
double minX = bbox.getMinX();
double eMinX = expand.getMinX();
double maxX = bbox.getMaxX();
double eMaxX = expand.getMaxX();
double minY = bbox.getMinY();
double eMinY = expand.getMinY();
double maxY = bbox.getMaxY();
double eMaxY = expand.getMaxY();
bbox.reset(
Math.min(Math.min(minX, maxX), Math.min(eMinX, eMaxX)),
Math.max(Math.max(minX, maxX), Math.max(eMinX, eMaxX)),
Math.min(Math.min(minY, maxY), Math.min(eMinY, eMaxY)),
Math.max(Math.max(minY, maxY), Math.max(eMinY, eMaxY)));
return bbox;
}