Fluid Forms Libs provides funtionalities to processing that are often require when creating physical forms with code. This includes, amoung other things, mouse navigation for viewing a model, parameter management and importing files into, and export files from, processing sketches in formats such as STL and OBJ.
Download FluidFormsLibs version 2.0.3 (4) in .zip format.
Unzip and put the extracted FluidFormsLibs folder into the libraries folder of your Processing sketches. Reference and examples are included in the FluidFormsLibs folder.
Reference. Have a look at the javadoc reference here. A copy of the reference is included in the .zip as well.
Source. The source code of FluidFormsLibs is available at GitHub.