git clone https://github.com/FreddieRa/MarsMap.git
cd ./MarsMap/
sudo apt-get update
sudo apt-get install python3-pip
pip3 install -r requirements.txt
wget https://planetarymaps.usgs.gov/mosaic/Mars_MGS_MOLA_DEM_mosaic_global_463m.tif -O height map.tifIn settings.py you can adjust scale, color gradient, and lighting settings.
SCALE- Defines the resolution of the map. Smaller numbers (e.g. < 10) will give a lot mire detail but take longer to render.smoothness- I don't really know.sobelScale- Defines how "smooth" to draw the map (i.e. how much of an impact the heightmap has).
To generate the map, run the following command:
python map.py --dir [output directory] --name [name of file] --scale [scale]
All of the parameters are optional, and will default to:
python map.py --dir ./ --name map.png
where the scale used is whatever is defined in settings.py.
Rendering consists of a five step process. First the original heightmap is downscaled, since usually we don't need such a high resolution. Then the map is reprojected to the Robinson projection. The third step is the generation of a color map. Based on the height data a color is picked from the gradient defined in the settings. After this a normal map is generated from the reprojected heightmap. Combining the normal map and the color map, lightmap will provide shading to generate the final product.
In the specified $directory the following files are generated:
hm.tifandhm.png, the heightmap, both in TIF to preserve information for the next step and as a PNG to allow easy viewing.pm.tifandpm.png, the reprojected heightmap.cm.png, the color map.nm.png, the normalmap.map.png, the final shaded map.
To combine everything in a nice map, annotations.svg has the names of many different features and an overlay with lines showing latitudes and longitudes.
All graphics files in this project are licensed under the CC-BY-SA 3.0.
All code in this project is licensed under the GPL version 3 or (at your option) any later version.