Blender artists D0ppelgaenger showcases an interesting experiment that uses gradients to draw iso 'height' lines on a model in real-time. The setup uses different model properties like color and position to generate the gradients.
We have already contacted D0ppelgaenger to learn more about this setup and hope to share it with you soon! In the mean time, you'll find more interesting Geometry Nodes showcase in their Twitter feed - have a look!
Experimenting with a setup that will calculate the direction of the gradient of an attribute (and trace lines along it) #geometrynodes
— D0ppelgaenger (@d0ppelgaenger) June 22, 2022