CreateFromPoints()

static BoundingSphere Microsoft.Xna.Framework.BoundingSphere.CreateFromPoints ( IEnumerable< Vector3 > points )

inlinestatic

Definition at line 134 of file BoundingSphere.cs.

    {
        if (points == null)
        {
            throw new ArgumentNullException("points");
        }
        IEnumerator<Vector3> enumerator = points.GetEnumerator();
        if (!enumerator.MoveNext())
        {
            throw new ArgumentException(FrameworkResources.BoundingSphereZeroPoints);
        }
        Vector3 value5;
        Vector3 value4;
        Vector3 value3;
        Vector3 value2;
        Vector3 value;
        Vector3 value6 = (value5 = (value4 = (value3 = (value2 = (value = enumerator.Current)))));
        foreach (Vector3 point in points)
        {
            if (point.X < value6.X)
            {
                value6 = point;
            }
            if (point.X > value5.X)
            {
                value5 = point;
            }
            if (point.Y < value4.Y)
            {
                value4 = point;
            }
            if (point.Y > value3.Y)
            {
                value3 = point;
            }
            if (point.Z < value2.Z)
            {
                value2 = point;
            }
            if (point.Z > value.Z)
            {
                value = point;
            }
        }
        Vector3.Distance(ref value5, ref value6, out var result);
        Vector3.Distance(ref value3, ref value4, out var result2);
        Vector3.Distance(ref value, ref value2, out var result3);
        Vector3 result4;
        float num;
        if (result > result2)
        {
            if (result > result3)
            {
                Vector3.Lerp(ref value5, ref value6, 0.5f, out result4);
                num = result * 0.5f;
            }
            else
            {
                Vector3.Lerp(ref value, ref value2, 0.5f, out result4);
                num = result3 * 0.5f;
            }
        }
        else if (result2 > result3)
        {
            Vector3.Lerp(ref value3, ref value4, 0.5f, out result4);
            num = result2 * 0.5f;
        }
        else
        {
            Vector3.Lerp(ref value, ref value2, 0.5f, out result4);
            num = result3 * 0.5f;
        }
        Vector3 vector = default(Vector3);
        foreach (Vector3 point2 in points)
        {
            vector.X = point2.X - result4.X;
            vector.Y = point2.Y - result4.Y;
            vector.Z = point2.Z - result4.Z;
            float num2 = vector.Length();
            if (num2 > num)
            {
                num = (num + num2) * 0.5f;
                result4 += (1f - num / num2) * vector;
            }
        }
        BoundingSphere result5 = default(BoundingSphere);
        result5.Center = result4;
        result5.Radius = num;
        return result5;
    }

References Microsoft.Xna.Framework.FrameworkResources.BoundingSphereZeroPoints, Microsoft.Xna.Framework.Vector3.Distance(), System.Collections.Generic.Dictionary< TKey, TValue >.GetEnumerator(), Microsoft.Xna.Framework.Vector3.Lerp(), System.value, Microsoft.Xna.Framework.Vector3.X, Microsoft.Xna.Framework.Vector3.Y, and Microsoft.Xna.Framework.Vector3.Z.

Referenced by Microsoft.Xna.Framework.BoundingSphere.CreateFromFrustum().