content: package org.opencv.core;
  
  /**
   * <p>Template class specifying a continuous subsequence (slice) of a sequence.</p>
   *
   * <p>class CV_EXPORTS Range <code></p>
   *
   * <p>// C++ code:</p>
   *
   *
   * <p>public:</p>
   *
   * <p>Range();</p>
   *
   * <p>Range(int _start, int _end);</p>
   *
   * <p>Range(const CvSlice& slice);</p>
   *
   * <p>int size() const;</p>
   *
   * <p>bool empty() const;</p>
   *
   * <p>static Range all();</p>
   *
   * <p>operator CvSlice() const;</p>
   *
   * <p>int start, end;</p>
   *
   * <p>};</p>
   *
   * <p>The class is used to specify a row or a column span in a matrix (</code></p>
   *
   * <p>"Mat") and for many other purposes. <code>Range(a,b)</code> is basically the
   * same as <code>a:b</code> in Matlab or <code>a..b</code> in Python. As in
   * Python, <code>start</code> is an inclusive left boundary of the range and
   * <code>end</code> is an exclusive right boundary of the range. Such a
   * half-opened interval is usually denoted as <em>[start,end)</em>.
   * The static method <code>Range.all()</code> returns a special variable that
   * means "the whole sequence" or "the whole range", just like " <code>:</code> "
   * in Matlab or " <code>...</code> " in Python. All the methods and functions in
   * OpenCV that take <code>Range</code> support this special <code>Range.all()</code>
   * value. But, of course, in case of your own custom processing, you will
   * probably have to check and handle it explicitly: <code></p>
   *
   * <p>// C++ code:</p>
   *
   * <p>void my_function(..., const Range& r,....)</p>
   *
   *
   * <p>if(r == Range.all()) {</p>
   *
   * <p>// process all the data</p>
   *
   *
   * <p>else {</p>
   *
   * <p>// process [r.start, r.end)</p>
   *
   *
   *
   * <p></code></p>
   *
   * @see <a href="http://docs.opencv.org/modules/core/doc/basic_structures.html#range">org.opencv.core.Range</a>
   */
  public class Range {
  
      public int start, end;
  
      public Range(int s, int e) {
          this.start = s;
          this.end = e;
      }
  
      public Range() {
          this(0, 0);
      }
  
      public Range(double[] vals) {
          set(vals);
      }
  
      public void set(double[] vals) {
          if (vals != null) {
              start = vals.length > 0 ? (int) vals[0] : 0;
              end = vals.length > 1 ? (int) vals[1] : 0;
          } else {
              start = 0;
              end = 0;
          }
  
      }
  
      public int size() {
          return empty() ? 0 : end - start;
      }
  
      public boolean empty() {
          return end <= start;
      }
  
      public static Range all() {
          return new Range(Integer.MIN_VALUE, Integer.MAX_VALUE);
      }
  
      public Range intersection(Range r1) {
          Range r = new Range(Math.max(r1.start, this.start), Math.min(r1.end, this.end));
          r.end = Math.max(r.end, r.start);
          return r;
      }
  
      public Range shift(int delta) {
          return new Range(start + delta, end + delta);
      }
  
      public Range clone() {
          return new Range(start, end);
      }
  
      @Override
      public int hashCode() {
          final int prime = 31;
          int result = 1;
          long temp;
          temp = Double.doubleToLongBits(start);
          result = prime * result + (int) (temp ^ (temp >>> 32));
          temp = Double.doubleToLongBits(end);
          result = prime * result + (int) (temp ^ (temp >>> 32));
          return result;
      }
  
      @Override
      public boolean equals(Object obj) {
          if (this == obj) return true;
          if (!(obj instanceof Range)) return false;
          Range it = (Range) obj;
          return start == it.start && end == it.end;
      }
  
      @Override
      public String toString() {
          return "[" + start + ", " + end + ")";
      }
  }
  