{$APPTYPE CONSOLE}
{$POINTERMATH ON}
// JCL_DEBUG_EXPERT_GENERATEJDBG OFF
// JCL_DEBUG_EXPERT_INSERTJDBG OFF
// JCL_DEBUG_EXPERT_DELETEMAPFILE OFF
program cv_SnakeImage;

uses
  System.SysUtils,
  uLibName in '..\..\..\include\uLibName.pas',
  highgui_c in '..\..\..\include\highgui\highgui_c.pas',
  core_c in '..\..\..\include\ņore\core_c.pas',
  Core.types_c in '..\..\..\include\ņore\Core.types_c.pas',
  imgproc.types_c in '..\..\..\include\imgproc\imgproc.types_c.pas',
  imgproc_c in '..\..\..\include\imgproc\imgproc_c.pas',
  legacy in '..\..\..\include\legacy\legacy.pas',
  calib3d in '..\..\..\include\calib3d\calib3d.pas',
  imgproc in '..\..\..\include\imgproc\imgproc.pas',
  haar in '..\..\..\include\objdetect\haar.pas',
  objdetect in '..\..\..\include\objdetect\objdetect.pas',
  tracking in '..\..\..\include\video\tracking.pas',
  Core in '..\..\..\include\ņore\core.pas';

const
  w = 500;
  filename = 'resource\cat2.jpg';

var
  imgA, imgB, imgAA: pIplImage;
  storage: pCvMemStorage;
  contour: pCvPointArray;
  Approx_contours: PcvSeq;
  contour_num: integer;
  i1, i2, i, j, length, f1: integer;
  point: pInteger;
  c_alpha: single = 0.45;
  c_beta: single = 0.10;
  c_gamma: single = 0.45;
  contours: pCvPoint;

begin
  try
    cvNamedWindow('image', 1);
    imgA := cvLoadImage(filename, CV_LOAD_IMAGE_UNCHANGED);
    imgAA := cvCreateImage(cvSize(imgA^.width, imgA^.Height), imgA^.depth, imgA^.nChannels);
    // Smooth or Copy
    // cvSmooth(imgA, imgAA, CV_GAUSSIAN, 7, 0, 0);
    cvCopy(imgA, imgAA);
    imgB := cvCreateImage(cvSize(imgA^.width, imgA^.Height), IPL_DEPTH_8U, 1);
    cvCvtColor(imgAA, imgB, CV_BGR2GRAY);
    length := 200;
    contour := AllocMem(sizeof(TCvPoint) * length);
    for i := 0 to length - 1 do
    begin
      contour[i].x := round(200 * cos(2 * PI * i / length) + 100);
      contour[i].y := round(200 * sin(2 * PI * i / length) + 100);
    end;

    while true do
    begin
      cvSnakeImage(imgB, contour, length, @c_alpha, @c_beta, @c_gamma, CV_VALUE, cvSize(21, 21),
        cvTermCriteria(CV_TERMCRIT_ITER, 1, 0.0), 1);
      cvCopy(imgAA, imgA);
      for i := 0 to length - 2 do
        cvLine(imgA, contour[i], contour[i + 1], CV_RGB(255, 0, 0), 2, 8, 0);
      cvLine(imgA, contour[length - 1], contour[0], CV_RGB(255, 0, 0), 2, 8, 0);

      cvShowImage('image', imgA);
      if cvWaitKey(200) = 27 then
        Break;
    end;
    cvReleaseImage(imgA);
    cvReleaseImage(imgB);
    cvDestroyAllWindows;
  except
    on E: Exception do
      Writeln(E.ClassName, ': ', E.Message);
  end;

end.