function TForm1.ReadWindAngle : Integer;
var
  wPixel, bRed : integer;
  fCurAngle, nRadius, nX, nY : integer;
begin
  fCurAngle:=0;
  nradius:=15;
  for fCurAngle:=0 to PRED(360) do
    begin
      Memo1.Lines.Add(IntToStr(fCurAngle));
      nX := Trunc(241 + (cos(DegToRad(fCurAngle)) * nRadius));     //old interface
      nY := Trunc(573 + (sin(DegToRad(fCurAngle)) * nRadius));     //old interface
      //nX := Trunc(400 + (cos(DegToRad(fCurAngle)) * nRadius));   //new interface
      //nY := Trunc(27 + (sin(DegToRad(fCurAngle)) * nRadius));    //new interface (SinCos is faster)
      form1.canvas.LineTo(nX,nY);
      wPixel := form1.canvas.Pixels[nX, nY];
      bRed := (wPixel and $FF);
        if (bRed > $9E) then begin
          Memo2.Lines.Add('Found Pixels: '+IntToStr(fCurAngle));
        end;
    end;
end;