//追踪一条封闭的等值线
private void TracingOneClosedContour()
{
int rows = _accessContour.GridInfo._rows; //这里是网格点的行列数
int columns = _accessContour.GridInfo._columns;
int startI = _curIsoPoint._row;
int startJ = _curIsoPoint._column;
_isoPointListInfo = new IsoPointListInfo();
List <IsoPoint> isoPointList = new List <IsoPoint>();
_isoPointListInfo._aIsoPointList = isoPointList;
_isoPointListInfo._value = _curFollowingValue;
CalcCoord(_curIsoPoint._row, _curIsoPoint._column, false);
TracingNextPoint();
_preIsoPoint = _curIsoPoint;
_curIsoPoint = _nextIsoPoint;
bool isClosed = false;
while (!isClosed)
{
TracingNextPoint();
_preIsoPoint = _curIsoPoint;
_curIsoPoint = _nextIsoPoint;
isClosed = (_curIsoPoint._row == startI) && (_curIsoPoint._column == startJ) && (false == _curIsoPoint._isHorizon);
}
_allIsoPointList.Add(_isoPointListInfo);
}
//追踪一条等值线
//这个函数要完成一条等值线追踪的所有操作
private void TracingOneNonClosedContour()
{
int rows = _accessContour.GridInfo._rows; //这里是网格点的行列数
int columns = _accessContour.GridInfo._columns;
_isoPointListInfo = new IsoPointListInfo();
List <IsoPoint> isoPointList = new List <IsoPoint>();
_isoPointListInfo._aIsoPointList = isoPointList;
_isoPointListInfo._value = _curFollowingValue;
CalcCoord(_curIsoPoint._row, _curIsoPoint._column, _curIsoPoint._isHorizon);
if (_curIsoPoint._isHorizon)
{
_xSide[_curIsoPoint._row, _curIsoPoint._column]._isIsoPoint = false;
}
else
{
_ySide[_curIsoPoint._row, _curIsoPoint._column]._isIsoPoint = false;
}
TracingNextPoint();
_preIsoPoint = _curIsoPoint;
_curIsoPoint = _nextIsoPoint;
bool isFinish = (_curIsoPoint._row == 0 && _curIsoPoint._isHorizon) || (_curIsoPoint._column == 0 && !_curIsoPoint._isHorizon) ||
(_curIsoPoint._row == rows - 1) || (_curIsoPoint._column == columns - 1);
while (!isFinish)
{
TracingNextPoint();
_preIsoPoint = _curIsoPoint;
_curIsoPoint = _nextIsoPoint;
isFinish = (_curIsoPoint._row == 0 && _curIsoPoint._isHorizon) || (_curIsoPoint._column == 0 && !_curIsoPoint._isHorizon) ||
(_curIsoPoint._row == rows - 1) || (_curIsoPoint._column == columns - 1);
}
_allIsoPointList.Add(_isoPointListInfo);
}
private void CalcCoord(int row, int column, bool isHorizon)
{
IsoPoint isoPoint = new IsoPoint();
isoPoint._column = column;
isoPoint._row = row;
isoPoint._isHorizon = isHorizon;
if (isHorizon)
{
isoPoint._x = _accessContour.GridInfo._xMin + (column + _xSide[row, column]._rate) * _deltX;
isoPoint._y = _accessContour.GridInfo._yMin + row * _deltY;
}
else
{
isoPoint._x = _accessContour.GridInfo._xMin + column * _deltX;
isoPoint._y = _accessContour.GridInfo._yMin + (row + _ySide[row, column]._rate) * _deltY;
}
float value = _curFollowingValue;
_isoPointListInfo._aIsoPointList.Add(isoPoint);
}
