/// <summary>
/// 頂点の追加
/// </summary>
private bool AddVertex(Vector2 point)
{
//例外検出
if (ExceptionDetector(point))
{
return(false);
}
polyLine.Add(point);
//予告線の基点を変更
if (noticeLine.GetVertexCount() == 0)
{
noticeLine.Add(point);
}
else
{
noticeLine.Change(0, point);
}
//アニメーションの距離更新
targetDistance = polyLine.TotalDistance;
lerped = true;
//コールバック
if (addVertexCallback != null)
{
addVertexCallback(point);
}
return(true);
}
/// <summary>
/// 全ての頂点の消去
/// </summary>
public void Clear()
{
int count = mainLine.GetVertexCount();
for (int i = 0; i < count; ++i)
{
//エフェクト用
RemoveLast();
}
subLine.Clear();
mf.mesh = null;
}
/// <summary>
/// 頂点追加前の例外検出。例外を検出した場合はtrueを返す
/// </summary>
private bool ExceptionDetector(Vector2 point)
{
int count = polyLine.GetVertexCount();
//同一点の検出
if (doublePointRemoval)
{
if (count > 1)
{
Vector2 prevPoint = polyLine.GetVertex(count - 1);
float dis = (point - prevPoint).magnitude;
if (dis < doublePointThreshold)
{
if (doublePointCallback != null)
{
doublePointCallback();
}
return(true);
}
}
}
//線分の交差判定
if (crossLineRemoval)
{
if (count > 2)
{
//検出線分の作成
LineSegment line = new LineSegment(polyLine.GetVertex(count - 1), point);
for (int i = 0; i < count - 2; ++i)
{
//比較線分の作成
LineSegment sample = new LineSegment(polyLine.GetVertex(i), polyLine.GetVertex(i + 1));
if (line.Intersects(sample))
{
if (crossLineCallback != null)
{
crossLineCallback();
}
return(true);
}
}
}
}
return(false);
}