content: /**
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.lucene.spatial.geometry.shape;
  
  
  /**
   * Rectangle shape.  
   *
   * <p><font color="red"><b>NOTE:</b> This API is still in
   * flux and might change in incompatible ways in the next
   * release.</font>
   */
  public class Rectangle implements Geometry2D {
    private Point2D ptMin, ptMax;
    
    public Rectangle() {
      ptMin=new Point2D(-1, 1);
      ptMax=new Point2D(1, 1);
    }
    
    public Rectangle(Point2D ptMin, Point2D ptMax) {
      this.ptMin=new Point2D(ptMin);
      this.ptMax=new Point2D(ptMax);
    }
    
    public Rectangle(double x1, double y1, double x2, double y2) {
      set(x1, y1, x2, y2);
    }
  
    @Override
    public String toString() {
      return "[" + ptMin + "," + ptMax + "]";
    }
    
    private void set(double x1, double y1, double x2, double y2) {
      this.ptMin=new Point2D(Math.min(x1, x2), Math.min(y1, y2));
      this.ptMax=new Point2D(Math.max(x1, x2), Math.max(y1, y2));
    }
    
    public double area() {
      return (ptMax.getX() - ptMin.getX()) * (ptMax.getY() - ptMin.getY());
    }
  
    public Point2D centroid() {
      return new Point2D( (ptMin.getX() + ptMax.getX()) / 2,
                    (ptMin.getY() + ptMax.getY()) / 2);
    }
  
    public boolean contains(Point2D p) {
      return p.getX() >= ptMin.getX() && 
        p.getX() <= ptMax.getX() &&
        p.getY() >= ptMin.getY() &&
        p.getY() <= ptMax.getY();
    }
  
    public void translate(Vector2D v) {
      ptMin.add(v);
      ptMax.add(v);
    }
  
    Point2D MinPt() {
      return ptMin;
    }
  
    Point2D MaxPt() {
      return ptMax;
    }
  
    public IntersectCase intersect(Rectangle r) {
      throw new UnsupportedOperationException();
      // TODO
    }
  
    public Point2D getMaxPoint() {
      return ptMax;
    }
  
    public Point2D getMinPoint() {
      return ptMin;
    }
  
    @Override
    public int hashCode() {
      final int prime = 31;
      int result = 1;
      result = prime * result + ((ptMax == null) ? 0 : ptMax.hashCode());
      result = prime * result + ((ptMin == null) ? 0 : ptMin.hashCode());
      return result;
    }
  
    @Override
    public boolean equals(Object obj) {
      if (this == obj)
        return true;
      if (obj == null)
        return false;
      if (getClass() != obj.getClass())
        return false;
      Rectangle other = (Rectangle) obj;
      if (ptMax == null) {
        if (other.ptMax != null)
          return false;
      } else if (!ptMax.equals(other.ptMax))
        return false;
      if (ptMin == null) {
        if (other.ptMin != null)
          return false;
      } else if (!ptMin.equals(other.ptMin))
        return false;
      return true;
    }
  
  }
  