Over the weekend I was able to do some experimentation with t-shirt screen printing. I wanted to see what kind of effects could be achieved by mixing bleach into normal screen printing ink.
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I had a few minutes the other day, so I decided to start looking through Ira Greenberg’s book on Processing.
So far it’s just been basics, but I wanted to post these (basically premade) images as a reminder to myself that I need to make something much more original.
The goal of this series of tests was to setup and connect multiple motion tracking points and fill the resulting triangular “cells” with different video. After Effects doesn’t allow point manipulation of objects/masks, so I had to figure out a way to create the triangles that the connected tracking points formed using the motion tracking data.
To do this, I worked with each triangle individually. I created three solids (black rectangles) and set their position and rotations to match the position and slope of three lines of the triangles. I lowered the opacity of the rectangles and assigned the multiply blending mode. Using the Alpha Levels Effect I was able to make the overlapping area pure black and everything else pure white. The resulting comps worked as my track mattes for the second video.
Here are a few of the steps I went through:
Just playing around with motion tracking and some of After Effect’s finest simulations.
[local /wp-content/uploads/2009/03/motiontrack1.mov]