private Tile TileAt(Ray ray, List <Tile> list, Vector3 position)
{
for (int i = 0; i < list.Count; i++)
{
var tile = list[i];
Vector3 worldA = root.TransformPoint(tile.a);
Vector3 worldB = root.TransformPoint(tile.b);
Vector3 worldC = root.TransformPoint(tile.c);
Plane plane = new Plane(worldA, worldB, worldC);
float distance;
if (plane.Raycast(ray, out distance))
{
Vector3 point = ray.GetPoint(distance);
if (GeometryMath.PointInTriangle(worldA, worldB, worldC, point))
{
if (tile.children.Count > 0)
{
var t = TileAt(ray, tile.children, position);
if (t != null)
{
return(t);
}
}
else
{
return(tile);
}
}
}
}
return(null);
}
/// <summary>
///
/// </summary>
/// <param name="worldPosition"></param>
/// <returns></returns>
public bool Contains(Vector3 worldPosition)
{
Vector3 worldA = grid.root.TransformPoint(a);
Vector3 worldB = grid.root.TransformPoint(b);
Vector3 worldC = grid.root.TransformPoint(c);
return(GeometryMath.PointInTriangle(worldA, worldB, worldC, worldPosition));
}
public bool Contains(Vector2 point)
{
if (GeometryMath.PointInTriangle(a, b, c, point) ||
GeometryMath.PointInTriangle(a, c, d, point) ||
GeometryMath.PointInSegment(a, c, point) ||
GeometryMath.PointInSegment(b, d, point))
{
return(true);
}
return(false);
}
