On your compatible Android phone, all you need to do is press and hold the home button, draw a quick circle around whatever caught your eye, and boom — Google gives you all the details you need.

This file includes stroke(), which converts a path into a geometric object, like drawing with a pen. It even works on three-dimensional paths. You can make a dashed line or add arrow heads. The turtle ...

Three dimensional turtle graphics to generate 3d paths or sequences of 3d transformations. Like the classic two dimensional turtle, the 3d turtle flies through space following a sequence of turtle ...