public bool MoveNext()
{
idx += 1;
if (_useSubGrid)
{
//var row = grid.getRow(idx);
var col = grid.getCol(idx);
if (col < _col0)
{
idx += _col0 - col;
}
if (col > _col1)
{
idx += grid.numCols - col;
}
if (idx > _lastIndex)
{
return(false);
}
}
if (idx >= grid.numCells)
{
return(false);
}
else
{
return(true);
}
}
/// <summary> Initializes a CellEnumerator that enumerates cells within
/// the rectangular subgrid defined by cell indices at two opposite
/// corners of the subgrid. </summary>
public CellEnumerator(LeapGrid grid, int subGridBegin, int subGridEnd) :
this(grid)
{
int idx0 = subGridBegin, idx1 = subGridEnd;
int row0 = grid.getRow(idx0), row1 = grid.getRow(idx1);
if (row0 > row1)
{
Utils.Swap(ref row0, ref row1);
}
int col0 = grid.getCol(idx0), col1 = grid.getCol(idx1);
if (col0 > col1)
{
Utils.Swap(ref col0, ref col1);
}
_col0 = col0; _col1 = col1;
_lastIndex = Mathf.Max(subGridBegin, subGridEnd);
idx = grid.getIndex(row0, col0) - 1;
_useSubGrid = true;
}
