A little Sunday doodle, inspired by Paul Henry Ramirez’s “Eccentric Stimuli” installation which I just saw at the Akron Art Museum.
My composition demonstrates several techniques:
-
Parametric expressions — Using
Make Parametric Points, I wrote a set of math expressions to generate each curl. The X and Y coordinates use sine waves with a power curve to produce spirals, and the X coordinate has an additional offset to make the curves move left to right over time. The Z coordinate starts out far away and approaches the viewer, making the curves appear to grow and move faster (due to the perspective effect) as they move left to right. -
Creating several similar (but not identical) objects — In the parametric expressions, I added a parameter to add variation to each path, and I used
Build Listto generate the parametric point series multiple times, each with a different value. -
Subtractive blending — I created a white background using
Make 3D Square, then painted dark-green line strips over it, subtracting them from the white background (Change 3D Object Blending) to produce the light purple color — light purple is the RGB complement to dark green. -
Control panel — Using a few instances of the
Share Valuenode (in the top left, tinted orange), I added some parameters you can modify to produce different results.
Instructions
In addition to the orange control panel, you can also modify these parameters:
- Line Width (on the
Make Line Strip Meshnode) - Subdivisions (on the
Make Parametric Pointsnode) - The parametric expressions themselves
When you change a value, you might need to fire an event from Fire on Start to update the composition (right-click on the Started port and select Fire Event).
Purple Curls.vuo (9.42 KB)
Purple Curls.app_.zip (1.08 MB)
