ck3-heightmapgenerator-v0.01

CK3 Heightmap Forge
Bespoke heightmap generator, highly in progress. For use with a CK3 procedural map tool.

Workflow is stage-based. Each pass is tunable independently and previewed live:

Continents — lays out coastlines and landmasses
Import Heightmap — use an existing heightmap as the base instead
Base Noise — fractal relief, as an alternative starting point
Ridges & Mountains — mountain belts, tuned separately from the coastline
Rolling Hills — local ground detail across the lowlands
Contrast — fine-tunes mountain/land height ratios
Coastal Depth — enforces a usable coastline on heightmaps not well-suited to direct CK3 upload
Upscale — raises working resolution to final export size
Hydraulic Erosion (GPU) — currently in progress, not enabled by default
Default values are set to a vanilla-sized map (18432 × 9216) and will more or less immediately produce a playable heightmap ready for import into the procedural tool.

Exports 16-bit greyscale PNG. Presets save and load as JSON.