Method Unproject

Source/Engine/Core/Math/Vector3.cs:1451–1461

Projects a 3D vector from screen space into object space. The vector to project. The X position of the viewport. The Y position of the viewport. The width of the viewport. The height of the viewport. The minimum depth of the v

(ref Vector3 vector, float x, float y, float width, float height, float minZ, float maxZ, ref Matrix worldViewProjection, out Vector3 result)

        /// <param name="worldViewProjection">The combined world-view-projection matrix.</param>
        /// <param name="result">When the method completes, contains the vector in object space.</param>
        public static void Unproject(ref Vector3 vector, float x, float y, float width, float height, float minZ, float maxZ, ref Matrix worldViewProjection, out Vector3 result)
        {
            Matrix.Invert(ref worldViewProjection, out var matrix);
            var v = new Vector3
            {
                X = (vector.X - x) / width * 2.0f - 1.0f,
                Y = -((vector.Y - y) / height * 2.0f - 1.0f),
                Z = (vector.Z - minZ) / (maxZ - minZ)
            };
            TransformCoordinate(ref v, ref matrix, out result);
        }

        /// <summary>
        /// Projects a 3D vector from screen space into object space.