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!7

cmodule ImageSegmenter > DynImageSurface {
  float contrastThreshold = 0.5f;
  int gridSize = 2;
  DoubleRange widthRange = new(0, 1);
  DoubleRange heightRange = new(0, 1);
  
  transient ReliableSingleThread rst = dm_rst(this, r segmentIt);
  
  visualize {
    JSlider slider = jLiveValueSlider(dm_fieldLiveValue('contrastThreshold));
    main.onChange(slider, rst);
    JSpinner spinner = liveValueSpinner(dm_fieldLiveValue('gridSize), 2, 10);
    main.onChange(spinner, rst);
    
    ret withCenteredLineBelow(
      withCenteredLineBelow(super.visualize(),
        withLabel("Contrast Threshold:", slider),
        withLabel("Grid size:", spinner),
        jbutton("Segment", rst)),
      withLabel("Width range:", main.onChange(doubleRangeLiveValueSlider(dm_fieldLiveValue('widthRange)), rst)),
      withLabel("Height range:", main.onChange(doubleRangeLiveValueSlider(dm_fieldLiveValue('heightRange)), rst)));
  }
  
  start {
    if (!hasImage()) setImage(whiteImage(100, 100));
    dm_vmBus_onMessage('newClipboardContents, voidfunc(O o) {
      if (o cast BufferedImage) thread { setImage(o); rst.trigger(); }
    });
  }
  
  void segmentIt enter {
    if (!hasImage()) ret;
    int w = imageWidth(), h = imageHeight();
    new AutoSegmenter as;
    as.g = gridSize;
    as.contrastThreshold = contrastThreshold;
    L<Rect> segments = as.go(BWImage(getImage());
    segments = filterRectsByWidthRange(intRange(iround(widthRange.start*w), iround(widthRange.end*w)+1));
    segments = filterRectsByHeightRange(intRange(iround(heightRange.start*h), iround(heightRange.end*h)+1));
    overlaySelectionsOnImageSurface(imageSurface, segments);
  }
}