Written in Python, Manim is an animation engine for creating beautiful explanatory math videos. It was originally created by Grant Sanderson of 3Blue1Brown. Today, Manim has a community version called ManimCE. Articles posted in here are more of the community version of Manim.

## Spherical Zone with Manim

The sphere is of radius 4 units, it is hardcoded to the parametric equations. The parametric equations are as follows:

• $x = r \cos \theta \sin \varphi$
• $y = r \cos \theta \cos \varphi$
• $z = r \cos \varphi$

If you check the code, you can see that the latitude and longitude of the sphere are reoriented. The reason is for the sphere to fit the Manim's camera settings.

The orientation of the camera was done by trial and error until I found a view that I wanted.

## Cylindrical Surface with Manim

A cylindrical surface of radius radius 4 and axis on the xz-plane and at a distance of 1.5 units from the xy-plane. The thickness of the cylinder is 4 units and the curvilinear length is half the circle.