/// <summary>
/// スナップの追加
/// </summary>
public void AddSnap(int precedence, BaseSnap snap, Action callback = null)
{
PrecedenceSnap pre = new PrecedenceSnap(precedence, snap);
snaps.Add(pre);
if (callback != null)
{
callbackDic.Add(pre, callback);
}
}
/// <summary>
/// スナップ
/// </summary>
public bool Snap(Vector2 point, out Vector2 result)
{
result = Vector2.zero;
if (snaps.Count == 0)
{
return(false);
}
float minDistance = float.MaxValue;
Vector2 sample;
PrecedenceSnap snap = null;
bool snaped = false;
for (int i = 0; i < snaps.Count; ++i)
{
PrecedenceSnap e = snaps[i];
if (e.snap.Snap(point, out sample))
{
if (snap == null)
{
result = sample;
snap = e;
minDistance = (sample - point).magnitude;
snaped = true;
}
else if (e.precedence > snap.precedence)
{
result = sample;
snap = e;
minDistance = (sample - point).magnitude;
snaped = true;
}
else if (snap.precedence == e.precedence)
{
//距離を測る
float distance = (sample - point).magnitude;
if (minDistance > distance)
{
result = sample;
snap = e;
minDistance = distance;
snaped = true;
}
}
}
}
prevSnap = snap;
return(snaped);
}
