Two examples in one project, both using Perlin noise with cubic interpolation which varies in 1 dimension. Click the button in the upper right corner to toggle between: - 2D example which plots the 1D Perlin noise along the Scratch X-axis. Illustrated by mountains reflected in water. - 3D example which uses the 1D Perlin noise to calculate 3D coordinates and then projects these on the Scratch 2D stage. Illustrated in a cruise along a river. Coded by me (@kriblo), using various examples on the internet. I tried to make the "noise" custom block as simple as possible. Ask away if you want to use it and have any questions.