Complex 2D

Complex 2D is a drawing tool to represent complex functions (aka imaginary functions) on a 2D plane using a colored approach, resulting in fantastic drawings. Heike, phase portrait, HSV, and uniform color schemes are supported. 

White-bars, contour density, and hue ranges allow for enhancing the drawings to achieve some quite artistic results.

Though the heavily use of mathematics, you don't actually need much knowledge to obtain great drawings.