Add contributed Libraries by selecting the menu item Sketch → Import Library... → Add Library... This will open the Contribution Manager, where you can browse for MatrixMath, or any other Library you want to install.
Not all available Libraries have been converted to show up in this menu. If a Library isn't there, it will need to be installed manually by following the instructions below.
Contributed Libraries may be downloaded separately and manually placed within the libraries
folder of your Processing sketchbook. To find (and change) the Processing sketchbook location on your computer, open the Preferences window from the Processing application (PDE) and look for the "Sketchbook location" item at the top.
By default the following locations are used for your sketchbook folder:
~/Documents/Processing
My Documents/Processing
Download MatrixMath from https://github.com/pallav12/matrixMath-for-processing/releases/download/latest/MatrixMath.zip
Unzip and copy the contributed Library's folder into the libraries
folder in the Processing sketchbook. You will need to create this libraries
folder if it does not exist.
The folder structure for Library MatrixMath should be as follows:
Processing
libraries
MatrixMath
examples
library
MatrixMath.jar
reference
src
Some folders like examples
or src
might be missing. After Library MatrixMath has been successfully installed, restart the Processing application.
If you're having trouble, have a look at the Processing Wiki for more information, or contact the author Pallav Dubey.