private void Awake()
{
mf = GetComponent <MeshFilter>();
snaps = new List <PrioritySnap>();
callbackDic = new Dictionary <PrioritySnap, Action>();
prevSnap = null;
}
/// <summary>
/// スナップの追加
/// </summary>
public void AddSnap(int priority, BaseSnap snap, Action callback = null)
{
PrioritySnap pSnap = new PrioritySnap(priority, snap);
snaps.Add(pSnap);
if (callback != null)
{
callbackDic.Add(pSnap, callback);
}
}
/// <summary>
/// 補助線への座標のスナップ
/// </summary>
public bool Snap(Vector2 point, out Vector2 result)
{
PrioritySnap snap = Snap(snaps, point, out result);
if (snap != null)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 座標のスナップ。スナップした要素を返す
/// </summary>
private PrioritySnap Snap(List <PrioritySnap> snaps, Vector2 point, out Vector2 result)
{
result = Vector2.zero;
if (snaps.Count == 0)
{
return(null);
}
float minDistance = float.MaxValue;
Vector2 sample;
PrioritySnap snap = null;
bool snaped = false;
for (int i = 0; i < snaps.Count; ++i)
{
PrioritySnap 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.priority > snap.priority)
{
result = sample;
snap = e;
minDistance = (sample - point).magnitude;
snaped = true;
}
else if (snap.priority == e.priority)
{
//距離を測る
float distance = (sample - point).magnitude;
if (minDistance > distance)
{
result = sample;
snap = e;
minDistance = distance;
snaped = true;
}
}
}
}
return(snap);
}
/// <summary>
/// スナップの追加
/// </summary>
public void AddSnap(int priority, BaseSnap snap, Action callback = null)
{
PrioritySnap pSnap = new PrioritySnap(priority, snap);
snaps.Add(pSnap);
addSnaps.Add(pSnap);
if (callback != null)
{
addSnapCallbackDic.Add(pSnap, callback);
}
//表示
if (show)
{
Show();
}
}
