/// <summary>
/// 获取到所属于的块;
/// </summary>
public RectCoord GetChunk(RectCoord coord)
{
short x = (short)Math.Round(coord.X / (float)width);
short y = (short)Math.Round(coord.Y / (float)height);
return(new Grids.RectCoord(x, y));
}
RectCoord SouthwestAdge(RectCoord coord)
{
int x = coord.X - width / 2;
int y = coord.Y - height / 2;
return(new RectCoord((short)x, (short)y));
}
RectCoord NorthEastAdge(RectCoord coord)
{
int x = coord.X + width / 2;
int y = coord.Y + height / 2;
return(new RectCoord((short)x, (short)y));
}
/// <summary>
/// 获取到块的中心;
/// </summary>
public RectCoord GetCenter(RectCoord chunk)
{
int x = chunk.X * width;
int y = chunk.Y * height;
return(new RectCoord((short)x, (short)y));
}
/// <summary>
/// 获取到矩形像素中心点;
/// </summary>
public Vector3 GetCenter(RectCoord coord)
{
float x = coord.X * width;
float z = coord.Y * height;
return(new Vector3(x, 0, z));
}
/// <summary>
/// 获取到矩形的UV坐标;
/// </summary>
public Vector2 GetUV(Vector3 position, out RectCoord coord)
{
Vector2 local = GetLocal(position, out coord);
Vector2 uv = new Vector2(local.x / width, local.y / height);
return(uv);
}
/// <summary>
/// 获取到这个矩形范围内的所有矩形元素;
/// </summary>
public IEnumerable <RectCoord> RectRange(Rect rect)
{
RectCoord southwest = GetCoord(rect.min);
RectCoord northeast = GetCoord(rect.max);
return(RectCoord.Range(southwest, northeast));
}
/// <summary>
/// 获取到UV坐标并且限制在指定的矩形之内;
/// </summary>
public Vector2 GetUV(RectCoord clamp, Vector3 position)
{
Vector2 local = GetLocal(clamp, position);
Vector2 uv = new Vector2(local.x / width, local.y / height);
return(Clamp01(uv));
}
/// <summary>
/// 获取到指定矩形的本地坐标;
/// </summary>
public Vector2 GetLocal(RectCoord clamp, Vector3 position)
{
Vector3 center = GetCenter(clamp);
Vector2 southwestPoint = new Vector2(center.x - widthHalf, center.z - heightHalf);
Vector2 local = new Vector2(position.x - southwestPoint.x, position.z - southwestPoint.y);
return(local);
}
/// <summary>
/// 获取到矩形的本地坐标;
/// </summary>
public Vector2 GetLocal(Vector3 position, out RectCoord coord)
{
coord = GetCoord(position);
Vector3 center = GetCenter(coord);
Vector2 southwestPoint = new Vector2(center.x - widthHalf, center.z - heightHalf);
Vector2 local = new Vector2(position.x - southwestPoint.x, position.z - southwestPoint.y);
return(local);
}
/// <summary>
/// 获取到块内所有的点;
/// </summary>
IEnumerable <RectCoord> ChunkRange(RectCoord chunk)
{
RectCoord center = GetCenter(chunk);
RectCoord southwest = SouthwestAdge(center);
RectCoord northeast = NorthEastAdge(center);
for (var x = southwest.X; x <= northeast.X; x++)
{
for (var y = southwest.Y; y <= northeast.Y; y++)
{
yield return(new RectCoord(x, y));
}
}
}
/// <summary>
/// 获取到矩形节点的矩形表示;
/// </summary>
public Rect GetRect(RectCoord coord)
{
Vector3 center = GetCenter(coord);
return(CenterToRect(center));
}
/// <summary>
/// 迭代范围;
/// </summary>
public IEnumerable <RectCoord> Range()
{
return(RectCoord.Range(Southwest, Northeast));
}
public RectRange(RectCoord center, int width, int height) : this(center.X, center.Y, width, height)
{
}
