| | 16 | |
| | 17 | * `getMinAndMaxHeight` Takes a heightmap and returns an object with properties `min` and `max`, the minimum and maximum height value present in a heightmap. |
| | 18 | * `rescaleHeightmap` Rescales a heightmap's height values linear to have minimum and maximum as given by the arguments. `ToDo`: Add a height to be unchanged (e.g. the water height to preserve the costline) and rescale above/below that value seperately. Logarithmic/exponential scaling would also be nice with the base as parameter. |
| | 19 | * `getStartLocationsByHeightmap` Searches a heightmap for a given number of points within a given height range and distance to the map border and tries to maximize the distance between the points returning them in a list. |
| | 20 | * `distributeEntitiesByHeight` Places entities/actors randomly chosen from a given list in a specific height range while avoiding given points (e.g. start locations) and the map border by the given distance. |
| | 21 | * `setRandomHeightmap` Sets a given heightmap to entirely random values. This is mainly meant for using erosion/smoothing on it later to get a realistic over all map shape (or test stability of erosion/smoothing functions) |
| | 22 | * `setBaseTerrainDiamondSquare` A method to set a heightmap to a realistic shape within the given height range limits (they might not be reached though). The `initialHeightmap` defines the global shape. The smoothness parameter can be chosen between 0 (uniform in roughness on all scales so quite rough even at small scales) and 1 (roughness decreases with smaller scales exponentially so quite smooth on small scales). |
| | 23 | * `globalSmoothHeightmap` Smoothes the heightmap depending on the adjacent tiles height. The `strength`value should be chosen between 0 (no effect at all) and 1 (quite strong smoothing). To get an even stronger smoothing effect apply it multiple times (rather than increasing the strength above 1). This can be seen as a very simple erosion function (e.g. erosion by decay and gravity). To get directional effects an assymetrical smoothMap can be used (e.g. to simulate wind/sun driven erosion). |
| | 24 | * `rectangularSmoothToHeight` Pushes the center of a rectangular region towards a target height while preserving the original height and shape at the edges. |
| | 25 | |
| | 26 | == Erosion == |
| | 27 | WIP. It's planned to put (more complex) erosion functionality (like water driven erosion) in a separate file. |
| | 28 | |
| | 29 | == Painting terrain by height and inclination == |
| | 30 | WIP. A fully automated method to paint the whole map realistically will go here. It is planned to make use of the biome system (the current biome functions are not sufficient though). |
| | 31 | |
| | 32 | == Local heightmap manimulation and window functions == |
| | 33 | WIP. All global heightmap functionalities can be used locally by manipulating a partial heightmap and fuse that manipulated part back into the original heightmap with appropriate windows functions (that fullfill the boundary conditions). |
