public bool WaitForClickPoints(double x, double y)
{
if (_clickedPointsPositionList.Count < _clickPoints)
{
var isNotTheSamePoint = _clickedPointsPositionList.Count == 0;
var prevIdx = _clickedPointsPositionList.Count - 1;
var prevPoint = prevIdx > -1 ? _clickedPointsPositionList[prevIdx] : null;
if (prevPoint != null)
{
isNotTheSamePoint = Math.Abs(prevPoint.ColBegin - x) > 0 || Math.Abs(prevPoint.RowBegin - y) > 0;
}
if (isNotTheSamePoint)
{
_clickedPointsPositionList.Add(new PositionModel()
{
ColBegin = x, RowBegin = y
});
}
}
_initPointsDone = _clickedPointsPositionList.Count == _clickPoints;
if (_initPointsDone)
{
//3 點求圓
var rows = _clickedPointsPositionList.Select(p => p.RowBegin).ToArray();
var cols = _clickedPointsPositionList.Select(p => p.ColBegin).ToArray();
GeoOperatorSet.CalculateCircleCenter(rows, cols, out midR, out midC, out radius);
row1 = midR;
col1 = midC + radius;
}
return(_initPointsDone);
}
public bool WaitForClickPoints(double x, double y)
{
if (_clickedPointsPositionList.Count < _clickPoints)
{
_clickedPointsPositionList.Add(new PositionModel()
{
ColBegin = x, RowBegin = y
});
}
_initPointsDone = _clickedPointsPositionList.Count == _clickPoints;
if (_initPointsDone)
{
//3 點求圓
var rows = _clickedPointsPositionList.Select(p => p.RowBegin).ToArray();
var cols = _clickedPointsPositionList.Select(p => p.ColBegin).ToArray();
GeoOperatorSet.CalculateCircleCenter(rows, cols, out midR, out midC, out radius);
//檢查 and notify
_success = (midR > 0 && midC > 0 && radius > 0);
if (_success)
{
_FirstPoint = new GeoPoint()
{
Row = rows[0], Col = cols[0]
};
_SecondPoint = new GeoPoint()
{
Row = rows[1], Col = cols[1]
};
_EndPoint = new GeoPoint()
{
Row = rows[2], Col = cols[2]
};
//
sizeR = midR;
sizeC = midC - radius;
//toDo, 計算startPhi, extentPhi
// 角度為正，表示在圓心的上方，反之在下方
// 角度越大，表示越接近左上角，視為起始點
// 角度越小，視為終點
var agOne = HMisc.AngleLx(midR, midC, _FirstPoint.Row, _FirstPoint.Col);
var agTwo = HMisc.AngleLx(midR, midC, _SecondPoint.Row, _SecondPoint.Col);
var agThree = HMisc.AngleLx(midR, midC, _EndPoint.Row, _EndPoint.Col);
Dictionary <string, double> agDict = new Dictionary <string, double>()
{
};
agDict.Add("1", agOne);
agDict.Add("2", agTwo);
agDict.Add("3", agThree);
//逆排序，再取奇數, 即為 StartPhi, EndPhi
var angles = agDict.OrderByDescending(p => p.Value)
.Where((p, idx) => idx % 2 == 0)
.Select(p => p.Value).ToArray();
_startPhi = angles[0];
var endPhi = angles[1];
//計算延伸長度
/*
* 起始點在第一，二象限，則
*/
_extentPhi = (_startPhi < 0) ? Math.Abs(_startPhi) - Math.Abs(endPhi)
: endPhi - _startPhi;
_pointOrder = "negative"; //clockwise 畫弧
determineArcHandles();
updateArrowHandle();
}
}
return(_initPointsDone);
}
