Deborah R. Fowler
Wiggle Illusion
Posted Dec 27 2019
Updated Dec 27 2019
Continuing with Illusions, this one is a flat surface that looks like it has hills or dips, depending on the viewer.
The inspiration for this image was from https://www.rd.com/culture/optical-illusions (same as the Squares Illusion). This was not as successful a replication as some of the others on this page, however still of interest. There is no 3D element to this image, only 2D elements.
The approach I took was to reproduce the inside shape and then copy that curve outward while using modulus to control the color. The initial shape was created using a circle and grouping points to scale outward and inward to create the star-shape. The curves were then skinned and color selected using a point wrangle node to determine the number of primitives per group.
Below you can see that the object is completely flat while giving an illusion of having a 3D shape.
