* @return a region
*/
public static CylinderRegion createRadius(Extent extent, Vector center, double radius) {
checkNotNull(extent);
checkNotNull(center);
Vector2D radiusVec = new Vector2D(radius, radius);
int minY = extent.getMinimumPoint().getBlockY();
int maxY = extent.getMaximumPoint().getBlockY();
return new CylinderRegion(center, radiusVec, minY, maxY);
}