a language for making art using mathematics
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Latest commit 2779f79 Sep 25, 2018


Curv: a language for making art using mathematics

By Doug Moen <doug@moens.org>

twistor shreks_donut

Curv is a programming language for creating art using mathematics. It's a 2D and 3D geometric modelling tool that supports full colour, animation and 3D printing.


  • Curv is a simple, powerful, dynamically typed, pure functional programming language.
  • Curv is easy to use for beginners. It has a standard library of predefined geometric shapes, plus operators for transforming and combining shapes. These can be plugged together like Lego to make 2D and 3D models.
  • Coloured shapes are represented using Function Representation (F-Rep). They can be infinitely detailed, infinitely large, and any shape or colour pattern that can be described using mathematics can be represented exactly.
  • Curv exposes the full power of F-Rep programming to experts. The standard geometry library is written entirely in Curv. Many of the demos seen on shadertoy.com can be reproduced in Curv, using shorter, simpler programs. Experts can package techniques used on shadertoy as high level operations for use by beginners.
  • Rendering is GPU accelerated. Curv programs are compiled into fragment shaders which are executed on the GPU.
  • Curv can export meshes to STL, OBJ and X3D files for 3D printing. The X3D format supports full colour 3D printing (on Shapeways.com, at least). These meshes are defect free: watertight, manifold, with no self intersections, degenerate triangles, or flipped triangles.

Getting Started

  • To install the software, see BUILD.md.
  • The documentation is here: docs/README.rst.
  • Mailing list: https://groups.google.com/d/forum/curv. You can join the mailing list using your Google account (or you'll be prompted to create an account). If you don't want to have a Google account, then send email to doug@moens.org and I will send you an invitation to join the list.
  • To contribute, see CONTRIBUTING.md.

Hardware Requirements

Two platforms are currently supported: Linux and macOS. I currently test on Ubuntu LTS and macos 10.11. Windows support is planned but not scheduled.

Curv requires direct access to a GPU made by Intel, AMD or Nvidia, using the vendor supplied GPU driver.

  • On Linux, the Mesa open source GPU driver is too buggy (as of August 2018). You need to use the closed source vendor supplied GPU driver instead. For AMD GPUs, you need the AMDGPU-PRO driver, which is only officially supported on Ubuntu LTS, Red Hat and SUSE. There are fewer limitations if you use Intel integrated graphics or an Nvidia GPU.
  • If Curv is invoked within a VNC session, then it might not have direct access to GPU hardware. Curv requires a GPU accelerated VNC server. Try TurboVNC combined with VirtualGL.
  • If Curv is run inside a VM, then it might not have direct access to the GPU. You need to ensure that the VM is GPU accelerated.