public void SetVertexPosition(Vertex p, int x, int y)
{
if (x <= 0)
{
x = 0;
}
if (y <= 0)
{
y = 0;
}
p.IsLocked = true;
int backupX = p.X;
int backupY = p.Y;
p.X = x;
p.Y = y;
foreach (var constraint in constraints)
{
if (constraint.IsVertexInvolved(p) && !constraint.IsContraintValid())
{
if (!constraint.TryRepairConstraint(this))
{
p.X = backupX;
p.Y = backupY;
}
}
}
if (p.X != backupX || p.Y != backupY)
{
VertexMoved?.Invoke(p);
}
p.IsLocked = false;
}
protected virtual void OnVertexMoved(EventArgs e)
{
VertexMoved?.Invoke(this, e);
}