Earth heightmap

thingiverse

My attempt at height mapping on a sphere, where a tetrahedron or icosahedron serves as the foundation, which is recursively mapped onto a sphere. This process does require some amount of memory and time for nriter greater than or equal to five. If you're interested in creating your own OpenSCAD heightmap array, use the bash script make_map.sh to get started. Convert the height map into an 8-bit grayscale pgm file using GIMP. Simply edit "file=new_heightmap.pgm" in make_map.sh to point to the correct image file. Here's how you can use it: ./make_map.sh > map.scad Remove the last comma on the second-to-last line, then add this code to your main SCAD file with "include <map.scad>" and comment out the current include statement. Adjust the scale (sc) to suit your taste.