internal void SetEdge(MeshPoint otherPoint)
{
var selfEdge = new MeshEdge();
selfEdge.Target = this;
var edge = new MeshEdge();
edge.Target = otherPoint;
if (otherPoint.Y == Y + 1)
{
_top = edge;
otherPoint._bottom = selfEdge;
return;
}
if (otherPoint.Y == Y - 1)
{
_bottom = edge;
otherPoint._top = selfEdge;
return;
}
if (otherPoint.X == X + 1)
{
_right = edge;
otherPoint._left = selfEdge;
return;
}
if (otherPoint.X == X - 1)
{
_left = edge;
otherPoint._right = selfEdge;
return;
}
throw new NotImplementedException();
}
internal void TryRelaxDiagonal()
{
var isDiagonal = _top != null && _bottom != null && _left != null && _right != null;
if (!isDiagonal)
{
return;
}
// there is no other way for a node to have 4 edges, than to be a diagonal
// NOTICE: top target has to have exactly one left or right node
var isLeftDiagonal = _top.Target._left != null;
if (isLeftDiagonal)
{
_bottom.Target._top.Target = _left.Target;
_left.Target._right.Target = _bottom.Target;
_top.Target._bottom.Target = _right.Target;
_right.Target._left.Target = _top.Target;
}
else
{
_bottom.Target._top.Target = _right.Target;
_right.Target._left.Target = _bottom.Target;
_top.Target._bottom.Target = _left.Target;
_left.Target._right.Target = _top.Target;
}
_top = null;
_bottom = null;
_left = null;
_right = null;
Component.Remove(this);
Component = null;
}