/// <summary>
/// 線分と点pとの距離
/// （一応、線分は有限長の線のこと）
/// </summary>
/// <param name="other"></param>
/// <returns></returns>
public double DistanceSP(Point p)
{
if (Point.Dot(P2 - P1, p - P1) < 0)
{
return(Point.Abs(p - P1));
}
if (Point.Dot(P1 - P2, p - P2) < 0)
{
return(Point.Abs(p - P2));
}
return(DistanceLP(p));
}
public Map(Point size, T empty = default(T))
{
Size = size.Abs();
Empty = empty;
_region = new T[Columns, Rows];
for (int i = 0; i < Area; i++)
{
var x = i % Columns;
var y = i / Columns;
_region[x, y] = Empty;
}
}
public static Texture[] Split(Texture2D xnaTexture, Point frameSize)
{
frameSize = frameSize.Abs();
var columns = xnaTexture.Width / frameSize.X;
var rows = xnaTexture.Height / frameSize.Y;
var frames = new Texture[columns * rows];
for (int i = 0; i < frames.Length; i++)
{
var position = new Point(i % columns, i / columns) * frameSize;
frames[i] = new Texture(xnaTexture, position, frameSize);
}
return(frames);
}
public void Abs()
{
var a = new Point(1, -2, 3);
Point.Abs(a).Should().Be(new Point(1, 2, 3));
}
/// <summary>
/// 直線と点pとの距離
/// （一応、直線は無限長の線のこと）
/// </summary>
/// <param name="p"></param>
/// <returns></returns>
public double DistanceLP(Point p)
{
return(Math.Abs(Point.Cross(Diffrent(), p - P1) / Point.Abs(Diffrent())));
}
public void Resize(Point size)
{
Resize(Point.Zero, size.Abs());
}
protected TileMapCollider(Vector2 position, Point mapSize, Point tileSize)
: base(position)
{
Map = new Map <int>(mapSize);
_tileSize = tileSize.Abs();
}
