Triangular Grid

Kroonenberg Groep / Arttenders

Triangular Grid is a dynamic and forever changing light installation by Sigrid Calon, commissioned by Kroonenberg Groep. Our software allowed the artist to compose many unique patterns based on a small set of images that are provided by the artist. The output is transmitted to a large number of external led drivers and displayed on the LED installation inside the shopping mall.

The application allowed the artist to create, adjust and preview (in 3D) the output in real time on her screen without an active connection to the LED installation. All the patterns are created in real-time using a compositing system that runs on the GPU, similar to how photoshop allows you to create an image using layers.

The final RGB color value (after compute) is mapped back onto every triangle in the installation and serves as the basis for the triangle's unique LED color value. The system therefore works with 2 distinct color palettes and can seamlessly transform one into the other. This is important because what the artist sees on screen can't be reproduced by the installation without using an additional white LED. 

The light intensity of the installation is regulated by a pair of (custom build) lux sensors placed on top of the roof. The entire application was written from the ground up in C++ using our own NAP framework that is available for free. The application uses artnet to communicate with the LED drivers and a tcp/ip communcation layer to communicate with the sensors on top of the roof.

The installation is permanent and can be seen when visiting the 'Kalverpassage' in Amsterdam.

photo by Ewout Huibers

photo by Ewout Huibers

photo by Ewout Huibers

photo by Ewout Huibers

photo by Ewout Huibers