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feat(render3d): terrain_lake_carve - a height map may carry its own lake bed

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Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-16 15:27:21 +03:00
parent 6dfdee75e2
commit fa6c422f9b
5 changed files with 16 additions and 2 deletions
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9
packages/ludic.render3d/terrain.ludic
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@ -69,6 +69,12 @@ var ter_lake_ez: int = 0
function terrain_lake(level: int, cx: int, cz: int, ex: int, ez: int) -> void {
ter_lake_level = level; ter_lake_cx = cx; ter_lake_cz = cz; ter_lake_ex = ex; ter_lake_ez = ez
}
# Whether the generator carves that bed. A height map that already carries a shaped bed
# turns it off and keeps the lake for everything else (its line, its outline, its shore):
# the carve drops the bed metres within the survey's last 0.9 m of shore, which reads as a
# cut edge on a lake whose own bank was shaped to come down gently.
var ter_lake_carve: bool = true
function terrain_lake_carve(on: bool) -> void { ter_lake_carve = on }
# The SEA's level, for the coast, the strand and the shoreline shading, when it is not the
# carved lake's. They were one number, which holds only while the lake is at sea level: a
# lake eighty metres up the valley drowned the whole coast toward its own surface. Unset,
@ -238,6 +244,9 @@ function terrain_generate() -> void {
u_f2(gpu_uniform(p, "u_origin"), ter_ox, ter_oz)
u_f4(gpu_uniform(p, "u_lake"), ter_lake_cx, ter_lake_cz, ter_lake_ex, ter_lake_ez)
u_f(gpu_uniform(p, "u_lake_level"), ter_lake_level)
var carve = F_ONE
if not ter_lake_carve { carve = F_ZERO }
u_f(gpu_uniform(p, "u_lake_carve"), carve)
u_f(gpu_uniform(p, "u_sea_level"), ter_sea_gen())
u_f4(gpu_uniform(p, "u_isle"), ter_isle_cx, ter_isle_cz, ter_isle_r, ter_isle_fall)
u_f(gpu_uniform(p, "u_isle_mode"), fi(ter_isle_mode))