The TransformNormal method is used to transform a normal vector by a matrix. This method is particularly useful in graphics programming where normals need to be transformed by a transformation matrix without affecting their directionality, which is crucial for lighting calculations.
To use the TransformNormal method, you need an instance of the Matrix struct and a Vector3 representing the normal vector you wish to transform. The method returns a new Vector3 that is the result of the transformation.
// Example of using TransformNormal Matrix transformationMatrix = Matrix.CreateRotationX(45.0f); Vector3 normal = new Vector3(0, 1, 0); // Transform the normal vector Vector3 transformedNormal = transformationMatrix.TransformNormal(normal); // transformedNormal now contains the transformed normal vector.