!7

cmodule2 FindLineInCenter > DynWebCamAnalyzer {
  transient BWIntegralImage ii;
  transient OCRCompass c;
  switchable bool lineIsBright = true;
  switchable int angles = 6;
  
  afterVisualize {
    containerAddFirst(buttons,
      dm_checkBox lineIsBright(),
      dm_intSpinner angles(2, 24));
  }
  
  void analyzeImage() {
    ii = new BWIntegralImage(inputImage);
    c = new OCRCompass;
    c.steps = angles*2;
    c.brightForeground = lineIsBright;
    c.image = ii;
    c.brightForeground = true;
    c.center = pt(w/2, h/2);
    c.radius = min(w/3, h/3);
    //c.sensorFootprint = iceil(c.radius);
    //printStruct("values", c.values);
    //print("angle", angle);
  }
  
  void drawOverlays(BufferedImage img) {
    double angle = c.mostLikelyAngle();
   renderRenderables(img, zipAndMap(c.sensors(), repeatList(2, asList(c.values)),
      (r, value) -> BoxWithColor(r, 0, 0, iround(value))));
    double radius2 = c.radius*0.75;
    drawRoundEdgeLine(img,
      pointOnCircle(c.center, radius2, angle),
      pointOnCircle(c.center, radius2, angle+pi()), Color.green, c.radius/3f);
  }
}