BoundingFrustum.cs

Go to the documentation of this file.

namespace SiliconStudio.Core.Mathematics
{
    public struct BoundingFrustum
    {
        public Plane Plane1;
        public Plane Plane2;
        public Plane Plane3;
        public Plane Plane4;
        public Plane Plane5;
        public Plane Plane6;

        public BoundingFrustum(ref Matrix matrix)
        {
            // Left
            Plane1 = Plane.Normalize(new Plane(
                matrix.M14 + matrix.M11,
                matrix.M24 + matrix.M21,
                matrix.M34 + matrix.M31,
                matrix.M44 + matrix.M41));

            // Right
            Plane2 = Plane.Normalize(new Plane(
                matrix.M14 - matrix.M11,
                matrix.M24 - matrix.M21,
                matrix.M34 - matrix.M31,
                matrix.M44 - matrix.M41));

            // Top
            Plane3 = Plane.Normalize(new Plane(
                matrix.M14 - matrix.M12,
                matrix.M24 - matrix.M22,
                matrix.M34 - matrix.M32,
                matrix.M44 - matrix.M42));

            // Bottom
            Plane4 = Plane.Normalize(new Plane(
                matrix.M14 + matrix.M12,
                matrix.M24 + matrix.M22,
                matrix.M34 + matrix.M32,
                matrix.M44 + matrix.M42));

            // Near
            Plane5 = Plane.Normalize(new Plane(
                matrix.M13,
                matrix.M23,
                matrix.M33,
                matrix.M43));

            // Far
            Plane6 = Plane.Normalize(new Plane(
                matrix.M14 - matrix.M13,
                matrix.M24 - matrix.M23,
                matrix.M34 - matrix.M33,
                matrix.M44 - matrix.M43));
        }
    }
}