content: package org.opencv.core;
  
  import java.util.Arrays;
  import java.util.List;
  
  
  public class MatOfRect2d extends Mat {
      // 64FC4
      private static final int _depth = CvType.CV_64F;
      private static final int _channels = 4;
  
      public MatOfRect2d() {
          super();
      }
  
      protected MatOfRect2d(long addr) {
          super(addr);
          if( !empty() && checkVector(_channels, _depth) < 0 )
              throw new IllegalArgumentException("Incompatible Mat");
          //FIXME: do we need release() here?
      }
  
      public static MatOfRect2d fromNativeAddr(long addr) {
          return new MatOfRect2d(addr);
      }
  
      public MatOfRect2d(Mat m) {
          super(m, Range.all());
          if( !empty() && checkVector(_channels, _depth) < 0 )
              throw new IllegalArgumentException("Incompatible Mat");
          //FIXME: do we need release() here?
      }
  
      public MatOfRect2d(Rect2d...a) {
          super();
          fromArray(a);
      }
  
      public void alloc(int elemNumber) {
          if(elemNumber>0)
              super.create(elemNumber, 1, CvType.makeType(_depth, _channels));
      }
  
      public void fromArray(Rect2d...a) {
          if(a==null || a.length==0)
              return;
          int num = a.length;
          alloc(num);
          double buff[] = new double[num * _channels];
          for(int i=0; i<num; i++) {
              Rect2d r = a[i];
              buff[_channels*i+0] = (double) r.x;
              buff[_channels*i+1] = (double) r.y;
              buff[_channels*i+2] = (double) r.width;
              buff[_channels*i+3] = (double) r.height;
          }
          put(0, 0, buff); //TODO: check ret val!
      }
  
  
      public Rect2d[] toArray() {
          int num = (int) total();
          Rect2d[] a = new Rect2d[num];
          if(num == 0)
              return a;
          double buff[] = new double[num * _channels];
          get(0, 0, buff); //TODO: check ret val!
          for(int i=0; i<num; i++)
              a[i] = new Rect2d(buff[i*_channels], buff[i*_channels+1], buff[i*_channels+2], buff[i*_channels+3]);
          return a;
      }
      public void fromList(List<Rect2d> lr) {
          Rect2d ap[] = lr.toArray(new Rect2d[0]);
          fromArray(ap);
      }
  
      public List<Rect2d> toList() {
          Rect2d[] ar = toArray();
          return Arrays.asList(ar);
      }
  }
  