AdrianoYou'll get the same result from using a poly grid, the height field is just the most convenient tool to work with a 2d grid in Houdini. The square shape is not relevant either as you can simply mask of the area from your input object. Doubt you'd need erosion tools either, it's more about modeling and rendering curves.kahuna031
Best way to get that kind of pattern is in my experience to do a shortest path setup and drive the resulting paths by manipulating the terrain.
To get going, noise up a height field, convert to polys, do a shortest path from all points to a single one.
Thanks for the tips. I'm trying to avoid terrain tools by all means, not only because i'm pretty sure that those retina textures are actually created with such, most likely some flow maps from wold creator or any kinda erosion tools and alike, so it'd be a bit redundant….but mostly i want to be able to create those patterns and shapes in a procedural seamless way on any kinda geometry and not just on flat squarish surfaces.
Thanks for your time.
The question is if you want your paths in 2d or 3d, I'm pretty sure your reference is in 2d but if you want it in 3d on any input object shortest path is still the way to go. Difference now is you need to control 3d patterns to drive the path finding, then I'd recomend converting your mesh to vdb and back to mesh, this gives you a uniformly sampled toplogy to apply noise on and apply the process I described earlier.