linecode/collisionkit

Exposes commands in Modo for creating Convex Hull & Optimal Bounding Box using CGAL ( The Computational Geometry Algorithms Library )

Installation

Windows users can find a packaged version in release

Mac and unix users are free to compile the kit from source.

Building

Here I will just detail the steps I took to download dependencies and compile the final plug-in, so mind these are the steps I took for Windows 64bit

Following instructions at https://doc.cgal.org/latest/Manual/windows.html#sec-installing-with-vcpkg

Open a terminal to the root of this kit

Get and install vcpkg, a package manager for windows,

git clone https://github.com/microsoft/vcpkg
cd vcpkg
bootstrap-vcpkg.bat

Then using vcpkg install cgal to get all dependencies for it

vcpkg.exe install yasm-tools:x86-windows
vcpkg.exe install cgal:x64-windows
vcpkg.exe install eigen3:x64-windows

Installation will take quite some time, around 30 minutes for me

Run cmake-gui and find vcpkg.cmake for "Specify Toolchain for Cross-compiling" like the CGAL example shows, set the cmake path to the LXSDK

Configure and Generate the project.

Usage

Kit will currently expose two new commands to Modo,

• ucx.new, for making a new mesh item with a convex hull of the first selected mesh
• ubx.new, making an optimized bounding box of the first selected mesh

Given a selected source mesh

Users can run ucx.new to create a new mesh item like

Or ubx.new for making an optimized fitted bounding box around the model

Model used was the Stanford Bunny provided by Stanford Computer Graphics Laboratory, http://graphics.stanford.edu/data/3Dscanrep/