public bool Intersects(AxisAlignedBox box)
{
foreach (Plane plane in FrustumHelper.GetPlanes(this))
{
if ((plane.Normal.X * box.Min.X) + (plane.Normal.Y * box.Min.Y) + (plane.Normal.Z * box.Min.Z) + plane.D > 0)
{
continue;
}
if ((plane.Normal.X * box.Max.X) + (plane.Normal.Y * box.Min.Y) + (plane.Normal.Z * box.Min.Z) + plane.D > 0)
{
continue;
}
if ((plane.Normal.X * box.Max.X) + (plane.Normal.Y * box.Min.Y) + (plane.Normal.Z * box.Max.Z) + plane.D > 0)
{
continue;
}
if ((plane.Normal.X * box.Min.X) + (plane.Normal.Y * box.Min.Y) + (plane.Normal.Z * box.Max.Z) + plane.D > 0)
{
continue;
}
if ((plane.Normal.X * box.Min.X) + (plane.Normal.Y * box.Max.Y) + (plane.Normal.Z * box.Min.Z) + plane.D > 0)
{
continue;
}
if ((plane.Normal.X * box.Max.X) + (plane.Normal.Y * box.Max.Y) + (plane.Normal.Z * box.Min.Z) + plane.D > 0)
{
continue;
}
if ((plane.Normal.X * box.Max.X) + (plane.Normal.Y * box.Max.Y) + (plane.Normal.Z * box.Max.Z) + plane.D > 0)
{
continue;
}
if ((plane.Normal.X * box.Min.X) + (plane.Normal.Y * box.Max.Y) + (plane.Normal.Z * box.Max.Z) + plane.D > 0)
{
continue;
}
// all points are behind the one plane so they can't be inside any other plane
return(false);
}
return(true);
}
public bool Intersects(IEnumerable <Vector3F> polygon)
{
foreach (Plane plane in FrustumHelper.GetPlanes(this))
{
bool gotOne = false;
foreach (Vector3F vert in polygon)
{
if ((plane.Normal.X * vert.X) + (plane.Normal.Y * vert.Y) + (plane.Normal.Z * vert.Z) + plane.D > 0)
{
gotOne = true;
break;
}
}
if (gotOne)
{
continue;
}
// all points are behind the one plane so they can't be inside any other plane
return(false);
}
return(true);
}