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  • c175f2bbf7 Document conf files master Gael-de-Sailly 2020-12-24 14:47:53 +0100
  • ca68738ba7 Reworked parameters, and rename 'terrain.conf' to 'terrain_default.conf' Gael-de-Sailly 2020-12-24 14:39:38 +0100
  • 85e545d5ac Fixed sea level variations Gael-de-Sailly 2020-12-24 13:09:08 +0100
  • e0aecdc3f3 Added a second method for local flow calculation. It is possible to switch between them using the 'flow_method' parameter. Gael-de-Sailly 2020-12-24 12:42:18 +0100
  • 83728cc932 Fixed lakes elevation There were sometimes missing water patches near a lake's edge, when the neighbour catchment area was lower. This commit allows to divide a cell into several mini-catchment basins, to fill only a part of it with water. Gael-de-Sailly 2020-12-22 18:34:30 +0100
  • 9ffa150263 Added function 'noisemap' to generate a noise map with a quite unified parameter set, and an option for logarithmic noise. For future use. Gael-de-Sailly 2020-12-22 01:44:03 +0100
  • 2a9335332b Added optional sea level variations for the simulation. This results in more varied coastline morphologies. Gael-de-Sailly 2020-12-22 01:11:43 +0100
  • 9b4a9b2516 Rework default erosion parameters, Fix ignored values of K and m, and changed processes order. Gael-de-Sailly 2020-12-20 18:51:44 +0100
  • 7529291ab4 For bounds.py (calculation of offsets), use the same data type as rivers Gael-de-Sailly 2020-12-20 18:48:10 +0100
  • b4f97bec61 For noise map seed: don't go over ±4096, to prevent rounding errors on coordinates (because noise library uses 32-bit floats) Gael-de-Sailly 2020-12-20 18:11:11 +0100
  • 3dc874a494 Added description of the algorithm + acknowledge the authors of the paper. Gael-de-Sailly 2020-12-05 14:33:40 +0100
  • f0dddee33c Lakes map: keep initial height (reduces file size) Lake height is calculated for every basin, and there is a lake if lake height is higher than ground height. If it is lower, there is no lake. In that case, it was previously raised to ground level, but since this can be done in Lua, we can write initial lakes height in the files. This has the advantage of reducing file size, since there are bigger areas of equal values, that are more efficiently compressed. Gael-de-Sailly 2020-12-05 14:24:50 +0100
  • ecd2c7d3f9 Completely change flow routing algorithm, use a local flow calculation, determine depressions, and link them using a minimum spanning tree (Boruvka's algorithm). This is based on a paper by Cordonnier et al, 2019. Gael-de-Sailly 2020-12-04 01:03:03 +0100
  • 40098d6be3 Use standard int instead of uint8, int32, etc. Much faster with NumPy. Gael-de-Sailly 2020-12-03 23:30:57 +0100
  • faef1658a9 Fixed map centering, and converted polygon coordinates to map nodes instead of grid nodes. Gael-de-Sailly 2020-12-22 16:38:30 +0100
  • d5cf4a6267 Optionally center the map around x=0 z=0 Gael-de-Sailly 2020-12-20 22:28:54 +0100
  • 53f88d337d Protect map preview from exceptions Since map preview is optional, an exception should not propagate to terrain calculation, so print an error message + traceback but keep the script running. Gael-de-Sailly 2020-11-25 13:12:24 +0100
  • 3644965842 Fix bool settings being improperly loaded as strings Gael-de-Sailly 2020-11-17 20:56:02 +0100
  • 9725979363 Fix increments for argument parsing Gael-de-Sailly 2020-11-17 20:45:11 +0100
  • ebacd3cdd4 Add license, update/improve documentation Gael-de-Sailly 2020-11-15 11:43:30 +0100
  • fc0a158385 Disable glaciers by default Gael-de-Sailly 2020-11-15 11:26:50 +0100
  • 050ca3b779 Change demo data, update to a grid using new default parameters Gael-de-Sailly 2020-11-15 11:19:28 +0100
  • 1f41423104 Print a clear message when grid is ready Also use plt.pause before plotting, ensuring plot is updated in real time Gael-de-Sailly 2020-11-15 11:13:42 +0100
  • 52766e8918 Added settingtypes Gael-de-Sailly 2020-11-15 11:10:19 +0100
  • 28c674d57c Decrease default diffusion factor Gael-de-Sailly 2020-11-14 19:14:09 +0100
  • 90f60ea6fb typo Gael-de-Sailly 2020-11-14 19:13:58 +0100
  • 803114aaab Generate data in `river_data` instead of `data` Gael-de-Sailly 2020-11-14 19:12:12 +0100
  • 9594a79f8b Configurable output directory Now relative to the directory the script is *run in*. Gael-de-Sailly 2020-11-14 18:26:13 +0100
  • d93234c9b7 Moved Python files inside a folder (package), except the 2 that are directly executable Gael-de-Sailly 2020-11-14 16:10:32 +0100
  • 7acd0af550 Use biomegen.generate_all Gael-de-Sailly 2020-11-11 13:58:23 +0100
  • 3792cd5dc8 Added support for biomegen mod Gael-de-Sailly 2020-11-10 13:25:04 +0100
  • 6b9c091dd5 Fix file opening mode on the Lua side, to avoid crashes on Windows Gael-de-Sailly 2020-11-14 17:31:36 +0100
  • b90cecdaf7 Allow command-line options for Python processing Gael-de-Sailly 2020-11-14 14:30:36 +0100
  • c33f2d9582 Python side: rework config system. Load `terrain.conf` of the script directory by default. Add a `terrain_higher.conf` for alternative terrain. Gael-de-Sailly 2020-11-14 12:19:40 +0100
  • 8a15bc924d Dynamic map displaying Map is displayed at every iteration if matplotlib library is installed Gael-de-Sailly 2020-11-14 12:05:52 +0100
  • 3fda369fb5 Rewritten map viewer Now displays map statistics even if there is no matplotlib Gael-de-Sailly 2020-11-13 11:04:27 +0100
  • 30136bf60a Added scale (blocksize) parameter for view_map.py Gael-de-Sailly 2020-11-10 13:19:20 +0100
  • 9475b49b8d Removed duplicate calls to 2 scripts Gael-de-Sailly 2020-11-10 13:18:02 +0100
  • 36b49a7fe2 Add settings for parameters in terrain_rivers.py Gael-de-Sailly 2020-05-30 12:03:34 +0200
  • 103cd49d78 Optionally disable distorsion by setting 'mapgen_rivers_distort = false' in minetest.conf Gaël de Sailly 2020-07-21 14:01:29 +0200
  • 25c5cb2e1f Reverse axes order for heightmaps (iterate in Z direction first instead of X) Gaël de Sailly 2020-07-21 12:46:23 +0200
  • 6f43430574 Added glaciers, and re-organized noise definitions Gael-de-Sailly 2020-05-24 11:38:47 +0200
  • 625768f967 Added snow and ice in function of temperature. Uses noise parameters of builtin biomegen Gael-de-Sailly 2020-05-23 18:13:00 +0200
  • 4edd1a946e Horizontal shifting according to 3D noises: makes slopes more irregular and natural-looking, allows overhanging. This is done by generating an intermediate 2D elevation map and, for each node in 3D, add a 2D offset vector to the position, and seek this position on the heightmap. Gael-de-Sailly 2020-05-23 15:52:16 +0200
  • f56857e804 Fix water not being set at lower chunk borders Gael-de-Sailly 2020-05-08 10:02:04 +0200
  • a73a0dd80b Avoid some redundant calculation on corners (not very significant, but why not) Gael-de-Sailly 2020-04-27 21:08:15 +0200
  • a9ab0e53d3 Change folder structure: data files are now in a directory. Also added a demo 400x400 map, that is overriden on pre-processing. Gael-de-Sailly 2020-04-26 23:29:36 +0200
  • b429b302e1 Rewritten part of code to calculate river depth Fixes bathymetry problems on turns or confluences, as well as abrupt riverbanks. Gaël de Sailly 2020-04-26 22:19:05 +0200
  • cd4b517585 terrain_rivers.py: `mapsize` is now the number of intervals instead of the number of nodes. Gael-de-Sailly 2020-04-26 19:51:21 +0200
  • cd90a21df4 Enhanced visualization code to display colormaps, and reuse the same code for initial and further viewing, in view_map.py Gael-de-Sailly 2020-04-26 18:30:29 +0200
  • 206c68813e Switch again to using river direction and flux instead of table of bounds Gael-de-Sailly 2020-04-26 18:10:23 +0200
  • 6af6795d90 Comment and clarify Gael-de-Sailly 2020-04-26 17:13:38 +0200
  • 49bc397718 Fix parameters for Simplex noise, to make sure the last octave has not a greater scale than 1 Also use a 401x401 grid instead of 400, so that there are 400 intervals Gael-de-Sailly 2020-04-26 16:52:40 +0200
  • 9700e948b9 Position should be strictly beyond river threshold to be a river Prevents some wrongly placed water pixels. Gael-de-Sailly 2020-04-14 21:54:05 +0200
  • 55725ad94b Re-organized the code. All polygon-related calculations go to polygons.lua. Gael-de-Sailly 2020-04-14 21:11:54 +0200
  • 43211fc31b Removed useless functions get_point_location and geometry.area Gael-de-Sailly 2020-04-14 20:22:13 +0200
  • 14163681cc Use settings from minetest.conf Gael-de-Sailly 2020-04-14 17:53:36 +0200
  • af7a7ce26d Compress data files (reduces size by a factor 3-4) Gael-de-Sailly 2020-04-13 15:59:34 +0200
  • da98a538bb Draw outer corners of river turns. Gael-de-Sailly 2020-04-13 15:01:54 +0200
  • b5db63d267 Re-added river flow data because needed for map preview Gael-de-Sailly 2020-04-13 13:45:52 +0200
  • 1adb4fbece Added an offset of 0.5 on terrain elevation This prevents rounding errors and improves interpolation on nearly flat areas Gael-de-Sailly 2020-04-13 12:27:24 +0200
  • 13d3e70b66 Implemented variable river width. Also changed the river data exported by terrain_rivers.py. They will not be compatible with what's generated by older versions. Gael-de-Sailly 2020-04-13 12:15:10 +0200
  • 4b63ed371e Add more information in the polygon table Gael-de-Sailly 2020-04-13 10:31:38 +0200
  • eba90803fe Removed useless debug print Gael-de-Sailly 2020-04-13 10:01:23 +0200
  • 34de4269ee Add directly a reference to the polygon table in the polygon list, instead of adding an index Gael-de-Sailly 2020-04-13 09:54:04 +0200
  • 4e8288afbe Added screenshot in README Gael-de-Sailly 2020-04-12 18:17:57 +0200
  • 56cebecb13 More robust and faster code for grid twisting on the Lua side. At chunkgen init, build a list of the polygons instead of calculating them for every node. Gael-de-Sailly 2020-04-12 16:42:03 +0200
  • b7c6f71635 Implemented grid twisting. Still many possible bugs, potentially clumsy implementation, but it seems to work. Gael-de-Sailly 2020-04-12 09:40:10 +0200
  • 6314117642 Added bounds.py: twists the grid as if the rivers were elastic bounds. Unused for now. Gael-de-Sailly 2020-04-11 14:29:39 +0200
  • ed34dec4fa Adjust number of octaves in function of map size Gael-de-Sailly 2020-04-12 17:26:37 +0200
  • 538bfb6d6d Added script to view map, using matplotlib Gael-de-Sailly 2020-04-12 16:44:29 +0200
  • ecba126983 Add a small random number to DEM when calculating flow direction, to smooth flat areas Gael-de-Sailly 2020-04-11 14:27:56 +0200
  • 8b78f6c5b4 Implemented isostatic rebound: loss of weight due to erosion will compensate at regional scale Gael-de-Sailly 2020-04-10 19:37:27 +0200
  • 6752ffa91d Added README Gael-de-Sailly 2020-04-10 17:29:32 +0200
  • 0bf351b2f6 Initial commit: working example using a basis of Simplex noise and implementing river flowing, lakes, and erosion Gael-de-Sailly 2020-04-09 21:13:38 +0200