Recent content by dadin22

help ??

I am not sure what are the values of my θ, φ and ρ where ρ - distance from the origin. φ - the angle from the z-axis θ - is the angle from the x-axis

Thanks for your reply mark, I do having problems with it. I can't figure our the way to compute the normal vector. I know I need to use theta angle and u and v vectors. I also can use the radius and the sphere's center. However I really not so good with the physics part of the problem...

Homework Statement Assuming an orthographic projection, the sphere projects into a circle on the image plane. compute the normal vector to the sphere’s surface at a given point(x,y). The Sphere's center coordinates x,y are known as well as the radius. The resulting normal is in 3d...