Part common to all terrain generators

Each node is capable of generating a terrain. In each case, the size of the terrain and the length of a cell are set in the Terrain size part of the node's properties.

All generation nodes respect the dimensions of the terrain: for a set of given parameters, a terrain of size 1024 x 1024 with a quad size of 1 is identical to a terrain of size 2048 x 2048 with a quad size of 0.5.
The resolution of a terrain can be increased without changing the shape (from 1024 x 1024 x 1 to 2048 x 2048 x 0.5, the number of vertices is multiplied by 4 while retaining the same terrain shape).