code wiki / (root) / nx_meshgen_domain_candidate_t337.nx

nx_meshgen_domain_candidate_t337.nx

buildroot/runtime/nx_meshgen_domain_candidate_t337.nx

10373 B191 linesdepth 4pulls 6 transitivereach 3 importersview sourcekind librarytopic meshgen
docsdependenciesstructsconstsfunctions

about

nx_meshgen.nx -- sovereign SURFACE NETS: turn ANY signed-distance FIELD into a watertight triangle MESH (generator-path R1, operator 2026-07-04: the ecosystem must EMIT geometry, not hand-craft). This is the BRIDGE: the pioneer SDF (sdf_body/sdf_head) -- or a t2mesh/i2mesh-generated field -- becomes real emitted verts+faces. Dual method (naive surface nets): (1) each grid CUBE straddling the 0-surface gets ONE vertex at the mean of its edge zero-crossings; (2) each grid EDGE that crosses the surface emits a QUAD (2 tris) linking the 4 cubes around it. Integer fx1024; deterministic. license_tier: ORIGINAL

dependencies 2 imports · 3 importers

nx_syscalls.nx nx_sdfrender.nx nx_meshgen_domain_candidate_t3 nx_meshgen_cell_audit_t337.nx nx_meshgen_domain_gate_t337.nx nx_meshgen_domain_locations_t337.n

imports: nx_syscalls.nxnx_sdfrender.nx

imported by: nx_meshgen_cell_audit_t337.nxnx_meshgen_domain_gate_t337.nxnx_meshgen_domain_locations_t337.nx

structs

none

consts

10const MG_N: i64 = 56 // grid resolution (cells per axis)
11const MG_GR: i64 = 1500 // world half-range fx1024 (body fits [-1500,1500])
12const MG_MAXV: i64 = 200000
13const MG_MAXF: i64 = 400000

functions

15func mg_step() -> i64 { return 2 * MG_GR / MG_N }
called by 3: mg_wcmg_sample_sdfmg_extract
17func mg_fi(i: i64, j: i64, k: i64) -> i64 { return (i * (MG_N + 1) + j) * (MG_N + 1) + k }
called by 5: mainmg_sample_sdf_boxmg_extract_boxmainmain
18func mg_ci(i: i64, j: i64, k: i64) -> i64 { return (i * MG_N + j) * MG_N + k }
called by 2: mainmg_extract_box
19func mg_wc(idx: i64) -> i64 { return 0 - MG_GR + idx * mg_step() } // grid idx -> world coord fx1024
calls 1: mg_step
24func mg_sample_sdf_box(base: i64, F: *i64, origin: i64, step: i64) -> i64
called by 4: mainmg_sample_sdfmainmain calls 2: mg_fisdf_eval
43func mg_extract_box(F: *i64, cubevi: *i64, vbuf: *i64, fbuf: *i64, out: *i64, origin: i64, step: i64) -> i64
called by 4: mainmg_extractmainmain calls 2: mg_fimg_ci
183func mg_build(base: i64, F: *i64, cubevi: *i64, vbuf: *i64, fbuf: *i64, out: *i64) -> i64
calls 2: mg_sample_sdfmg_extract
190func mg_sample_sdf(base:i64,F:*i64)->i64{return mg_sample_sdf_box(base,F,0-MG_GR,mg_step())}
called by 1: mg_build calls 2: mg_sample_sdf_boxmg_step
191func mg_extract(F:*i64,cubevi:*i64,vbuf:*i64,fbuf:*i64,out:*i64)->i64{return mg_extract_box(F,cubevi,vbuf,fbuf,out,0-MG_GR,mg_step())}
called by 1: mg_build calls 2: mg_extract_boxmg_step