/// <summary>
/// Gets a value indicating whether this <see cref="BoundingSphere"/> contains the specified frustum.
/// </summary>
/// <param name="frustum">A <see cref="BoundingFrustum"/> which represents the frustum to evaluate.</param>
/// <returns>A <see cref="ContainmentType"/> value representing the relationship between this sphere and the evaluated frustum.</returns>
public ContainmentType Contains(BoundingFrustum frustum)
{
Contract.Require(frustum, nameof(frustum));
if (!frustum.Intersects(this))
{
return(ContainmentType.Disjoint);
}
var radiusSquared = Radius * Radius;
foreach (var corner in frustum.CornersInternal)
{
Vector3 cornerRelativeToCenter;
cornerRelativeToCenter.X = corner.X - Center.X;
cornerRelativeToCenter.Y = corner.Y - Center.Y;
cornerRelativeToCenter.Z = corner.Z - Center.Z;
if (cornerRelativeToCenter.LengthSquared() > radiusSquared)
{
return(ContainmentType.Intersects);
}
}
return(ContainmentType.Contains);
}
/// <summary>
/// Gets a value indicating whether this <see cref="BoundingBox"/> contains the specified bounding frustum.
/// </summary>
/// <param name="frustum">A <see cref="BoundingFrustum"/> which represents the frustum to evaluate.</param>
/// <param name="result">A <see cref="ContainmentType"/> value representing the relationship between this box and the evaluated frustum.</param>
public void Contains(BoundingFrustum frustum, out ContainmentType result)
{
Contract.Require(frustum, nameof(frustum));
if (!frustum.Intersects(this))
{
result = ContainmentType.Disjoint;
return;
}
foreach (var corner in frustum.CornersInternal)
{
if (Contains(corner) == ContainmentType.Disjoint)
{
result = ContainmentType.Intersects;
return;
}
}
result = ContainmentType.Contains;
}
/// <summary>
/// Gets a value indicating whether this <see cref="BoundingSphere"/> intersects the specified frustum.
/// </summary>
/// <param name="frustum">A <see cref="BoundingFrustum"/> which represents the frustum to evaluate.</param>
/// <param name="result"><see langword="true"/> if this sphere intersects the evaluated frustum; otherwise, <see langword="false"/>.</param>
public void Intersects(BoundingFrustum frustum, out Boolean result)
{
Contract.Require(frustum, nameof(frustum));
frustum.Intersects(ref this, out result);
}
/// <summary>
/// Gets a value indicating whether this <see cref="Plane"/> intersects the specified frustum.
/// </summary>
/// <param name="frustum">A <see cref="BoundingFrustum"/> which represents the frustum to evaluate.</param>
/// <param name="result">A <see cref="PlaneIntersectionType"/> value which describes the relationship between this plane and the evaluated frustum.</param>
public void Intersects(BoundingFrustum frustum, out PlaneIntersectionType result)
{
Contract.Require(frustum, nameof(frustum));
result = frustum.Intersects(this);
}
/// <summary>
/// Gets a value indicating whether this <see cref="Plane"/> intersects the specified frustum.
/// </summary>
/// <param name="frustum">A <see cref="BoundingFrustum"/> which represents the frustum to evaluate.</param>
/// <returns>A <see cref="PlaneIntersectionType"/> value which describes the relationship between this plane and the evaluated frustum.</returns>
public PlaneIntersectionType Intersects(BoundingFrustum frustum)
{
Contract.Require(frustum, nameof(frustum));
return(frustum.Intersects(this));
}
