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feat(physics): phys_heightfield_smooth - the ground as a renderer draws a cubic B-spline height map, smoothed in C

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-27 00:27:15 +03:00
parent c7a18fd4f0
commit d2cd775309
6 changed files with 48 additions and 2 deletions
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7
packages/ludic.physics/shapes.ludic
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@ -70,6 +70,13 @@ export function phys_heightfield(physics_st: mut PhysicsState, h: []float, n: in
return ph_keep(physics_st, jph_shape_heightfield(h, n, ox, oz, cell))
}
# the ground as a renderer draws a cubic B-spline height map: tex is n x n texels, the first
# texel's centre at (ox, oz), cell metres apart; the smoothing is done in C
export function phys_heightfield_smooth(physics_st: mut PhysicsState, tex: []float, n: int, ox: float, oz: float, cell: float) -> int {
if len(tex) < n * n { return -1 }
return ph_keep(physics_st, jph_shape_heightfield_bspline(tex, n, ox, oz, cell))
}
# a dock or a cabin: v holds nv points (x, y, z), tri holds nt triangles (i, j, k)
export function phys_mesh(physics_st: mut PhysicsState, v: []float, nv: int, tri: []int, nt: int) -> int {
if len(v) < nv * 3 or len(tri) < nt * 3 { return -1 }