CreatePerspectiveFieldOfView()

static Matrix4x4 System.Numerics.Matrix4x4.CreatePerspectiveFieldOfView ( float fieldOfView, float aspectRatio, float nearPlaneDistance, float farPlaneDistance )

inlinestatic

Definition at line 548 of file Matrix4x4.cs.

    {
        if (fieldOfView <= 0f || fieldOfView >= (float)Math.PI)
        {
            throw new ArgumentOutOfRangeException("fieldOfView");
        }
        if (nearPlaneDistance <= 0f)
        {
            throw new ArgumentOutOfRangeException("nearPlaneDistance");
        }
        if (farPlaneDistance <= 0f)
        {
            throw new ArgumentOutOfRangeException("farPlaneDistance");
        }
        if (nearPlaneDistance >= farPlaneDistance)
        {
            throw new ArgumentOutOfRangeException("nearPlaneDistance");
        }
        float num = 1f / MathF.Tan(fieldOfView * 0.5f);
        float m = num / aspectRatio;
        System.Runtime.CompilerServices.Unsafe.SkipInit(out Matrix4x4 result);
        result.M11 = m;
        result.M12 = (result.M13 = (result.M14 = 0f));
        result.M22 = num;
        result.M21 = (result.M23 = (result.M24 = 0f));
        result.M31 = (result.M32 = 0f);
        float num2 = (result.M33 = (float.IsPositiveInfinity(farPlaneDistance) ? (-1f) : (farPlaneDistance / (nearPlaneDistance - farPlaneDistance))));
        result.M34 = -1f;
        result.M41 = (result.M42 = (result.M44 = 0f));
        result.M43 = nearPlaneDistance * num2;
        return result;
    }

References System.Math.PI, and System.MathF.Tan().