We also share this tutorial and very interesting resource on 3DArt, Matteo Forghieri shows us how it is possible to create a simple 2D animation effect using the tracer in c4d, with the possibility to download the project files.
2d fx with tracer object and metaball from Matteo Forghieri on Vimeo.
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ball scene: mediafire.com/?a4nwo40n8o4tmob
intro scene: dropbox.com/s/cw2049v64roqxq3/2d%20fx%20intro.c4d?dl=0