A online interactive editor for generating realistic terrain with procedural weathering and erosion iterative simulation.
Interactive Editor Export as .obj and .png height maps
The following heightmap (512x512) was exported to Blender and rendered with Eevee
The simulator comes in a command line tool format as well in addition to the online interface. Usage:
$ erosion-sim
Command line tool for generating realistic terrain heightmap through a iterative
erosion simulation. Program takes in either a pre-existing heightmap in .png
format or can generate a new heightmap using OpenSimplex noise, and can output
in .png .obj, and .stl file format for importing to other software.
Copyright (c) 2021 Henry Jiang
MIT LICENSE
USAGE: erosion-sim [options]
--help
INPUTS:
If input image is not specified, then noise parameters must be passed
in. If arguments are missing, then the default values will be used.
-i <imagefile> Pre-existing heightmap. Must be square.
--default_random Use default noise settings with a random seed
--seed seed Sets the noise seed
--octaves octaves Sets how many layers of noise there will be
--persistence persist Sets how much each layer's contribution
--scale scale Sets the inital noise scale
--height height Sets the inital height
SIM PARAMS:
-n, --iterations iters The number of iterations. Heavy impact.
Recommends [ 5 * size ^ 2 ] iterations.
If any arguments below is not supplied, then the default values are used.
--use_default Use the default erosion parameters
--drop_radius radius Specify the droplet radius. Heavy impact.
--droplet_life time How long the droplet lives for. Heavy impact.
--inertia mass Sets droplet's inertia
--sediment_cap cap Sets max carrying capacity
--deposit_speed speed Sets the deposit speed
--erode_speed speed Sets the erosion speed
--evaporate_speed speed Sets the evaporation speed
OUTPUTS:
-o <outputfile> Specify the output filename(s)
--quality size Only for obj. Specify the output quality
--format={png|obj|stl} Specify the export format
--save-preview Save the heightmap before erosion