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Non-Linear Reflections? {moved from calculus for assumed better relevance}

Would this be considered a pluasible definition of a non-linear reflection? :

Say I have the line and I want to reflect it over the parabola , and call the resulting graph . At an arbitrary point on I construct a line normal to and call it . I determine the point on on at which intersects . Then I construct a line tangent to at and call it . Finnally, I reflect every point over every coresponding line to arrive at . This is just a thought I had, I dont think it has any applications, although the one thing it reminds me of is looking into the curved parabolic mirrors at the grocery store that help you see around corners, it takes a straight line frame of referance and "squeezes" is outward. Anyway I picked two random equations for and and graphed the reflection defined above. I'll attach an image of it to this post.