Dev challenge at Stink Studios London: use Spark AR Studio to make a spooky Halloween experience.
I've included the custom script.js file I wrote to drive the interactions and timer. Spark AR has gone through 37(!) major version in the 8 months since I made this project, so the APIs this code references have likely changed. I've got version 48.1 of Spark AR on my machine.
The core technical aspect I was interested in was getting the knife to look like it was stuck in the head (i.e. to get the tracking and layering occlusion right). Wanting to build a bit of suspense up to the "big reveal", I ended up with something a bit like an interactive music video that requires around 2 minutes of attention. Definitely more an art experiment than an attempt to make a filter people would use on Instagram!
I screen recorded an entire end-to-end run here: vimeo.com/407093062
To build the project, I found it helpful to go through the tutorials Spark AR Studio provides. I combined techniques from those tutorials. For instance, the 3D object occlusion method is based on the sunglasses demo, and the blood streams are a slight twist on the confetti particles and a happy birthday message. All the 3D knifes and fantasy-novel looking blades are from the free assets available in the Spark AR marketplace.
Unrelated work that Stink Studios has done in Spark AR:
