nx_t2mesh.nx source

1// nx_t2mesh.nx -- sovereign TEXT-to-MESH generator v0 (generator-path R2). NOT a neural DreamFusion/Shap-E 2// model -- a DATA-DRIVEN PARAMETRIC generator: a prompt selects an object TEMPLATE (a recipe of SDF primitives), 3// which fills the field; nx_meshgen (surface nets) then EMITS the mesh. The point vs hand-crafting: ONE call 4// emits N different objects from N prompts, and the vocabulary GROWS AS DATA (add a template = add an object). 5// The critic scores each emitted object. Honest ceiling: parametric (not free-form), a spine to grow toward 6// neural later. license_tier: ORIGINAL 7import "nx_syscalls.nx" 8import "nx_sdfrender.nx" 9const K_MAGIC_1050: i64 = 1050 10 11func t2m_set(base: i64, idx: i64, cx: i64, cy: i64, cz: i64, rx: i64, ry: i64, rz: i64) -> i64 { 12 let p: *i64 = (base + O_PARTS) as *i64 13 p[idx * 6] = cx; p[idx * 6 + 1] = cy; p[idx * 6 + 2] = cz 14 p[idx * 6 + 3] = rx; p[idx * 6 + 4] = ry; p[idx * 6 + 5] = rz 15 return 0 16} 17func t2m_conf(base: i64, count: i64, blend: i64) -> i64 { 18 let np: *i64 = (base + O_NPART) as *i64; np[0] = count 19 let kb: *i64 = (base + O_KBLEND) as *i64; kb[0] = blend 20 sdf_clear_ops(base, PARTS_CAP) // reused arenas must not inherit a previous object's carve ops 21 return 0 22} 23 24// substring keyword match (no OOB): stop=1 matched-all, stop=2 mismatch. 25func t2m_has(s: *u8, kw: *u8) -> i64 { 26 var i: i64 = 0 27 while s[i] != (0 as u8) { 28 var k: i64 = 0 29 var stop: i64 = 0 30 while stop == 0 { 31 if kw[k] == (0 as u8) { stop = 1 } else { 32 let sc: *u8 = (s as i64 + i + k) as *u8 33 if sc[0] != kw[k] { stop = 2 } else { k = k + 1 } 34 } 35 } 36 if stop == 1 { return 1 } 37 i = i + 1 38 } 39 return 0 40} 41// prompt -> object id (data-driven vocabulary; grows by adding a keyword+template) 42func t2m_id_of(prompt: *u8) -> i64 { 43 if t2m_has(prompt, "snow" as *u8) == 1 { return 1 } 44 if t2m_has(prompt, "dumbbell" as *u8) == 1 { return 2 } 45 if t2m_has(prompt, "barbell" as *u8) == 1 { return 2 } 46 if t2m_has(prompt, "weight" as *u8) == 1 { return 2 } 47 if t2m_has(prompt, "tree" as *u8) == 1 { return 3 } 48 if t2m_has(prompt, "mushroom" as *u8) == 1 { return 4 } 49 if t2m_has(prompt, "bottle" as *u8) == 1 { return 5 } 50 if t2m_has(prompt, "person" as *u8) == 1 { return 6 } 51 if t2m_has(prompt, "human" as *u8) == 1 { return 6 } 52 if t2m_has(prompt, "body" as *u8) == 1 { return 6 } 53 if t2m_has(prompt, "elara" as *u8) == 1 { return 6 } 54 if t2m_has(prompt, "figure" as *u8) == 1 { return 6 } 55 if t2m_has(prompt, "cactus" as *u8) == 1 { return 7 } 56 if t2m_has(prompt, "capsule" as *u8) == 1 { return 8 } 57 if t2m_has(prompt, "pill" as *u8) == 1 { return 8 } 58 return 0 // default: sphere/ball 59} 60func t2m_name(id: i64) -> *u8 { 61 if id == 1 { return "snowman" as *u8 } 62 if id == 2 { return "dumbbell" as *u8 } 63 if id == 3 { return "tree" as *u8 } 64 if id == 4 { return "mushroom" as *u8 } 65 if id == 5 { return "bottle" as *u8 } 66 if id == 6 { return "person" as *u8 } 67 if id == 7 { return "cactus" as *u8 } 68 if id == 8 { return "capsule" as *u8 } 69 return "sphere" as *u8 70} 71 72// build the SDF field for object `id` into base (fills O_PARTS + O_NPART + O_KBLEND). 73func t2m_gen(base: i64, id: i64) -> i64 { 74 if id == 1 { // snowman: 3 stacked spheres + carrot nose 75 t2m_set(base, 0, 0, 0 - 700, 0, 700, 700, 700) 76 t2m_set(base, 1, 0, 300, 0, 500, 500, 500) 77 t2m_set(base, 2, 0, K_MAGIC_1050, 0, 360, 360, 360) 78 t2m_set(base, 3, 0, K_MAGIC_1050, 360, 90, 80, 260) 79 t2m_conf(base, 4, 90); return 0 80 } 81 if id == 2 { // dumbbell: 2 weights + bar 82 t2m_set(base, 0, 0 - 800, 0, 0, 400, 400, 400) 83 t2m_set(base, 1, 800, 0, 0, 400, 400, 400) 84 t2m_set(base, 2, 0, 0, 0, 850, 140, 140) 85 t2m_conf(base, 3, 50); return 0 86 } 87 if id == 3 { // tree: trunk + 3 canopy blobs 88 t2m_set(base, 0, 0, 0 - 500, 0, 180, 700, 180) 89 t2m_set(base, 1, 0, 500, 0, 600, 520, 600) 90 t2m_set(base, 2, 0 - 320, 300, 180, 400, 400, 400) 91 t2m_set(base, 3, 320, 360, 0 - 160, 400, 400, 400) 92 t2m_conf(base, 4, 140); return 0 93 } 94 if id == 4 { // mushroom: stem + cap 95 t2m_set(base, 0, 0, 0 - 400, 0, 250, 520, 250) 96 t2m_set(base, 1, 0, 320, 0, 680, 250, 680) 97 t2m_conf(base, 2, 90); return 0 98 } 99 if id == 5 { // bottle: body + shoulder + neck 100 t2m_set(base, 0, 0, 0 - 350, 0, 430, 600, 430) 101 t2m_set(base, 1, 0, 350, 0, 300, 260, 300) 102 t2m_set(base, 2, 0, 780, 0, 150, 320, 150) 103 t2m_conf(base, 3, 70); return 0 104 } 105 if id == 6 { sdf_body(base); return 0 } // person -> the pioneer benchmark body 106 if id == 7 { // cactus: column + 2 arms 107 t2m_set(base, 0, 0, 0, 0, 300, 950, 300) 108 t2m_set(base, 1, 0 - 460, 250, 0, 190, 420, 190) 109 t2m_set(base, 2, 0 - 460, 650, 0, 190, 300, 190) 110 t2m_set(base, 3, 460, 120, 0, 190, 420, 190) 111 t2m_set(base, 4, 460, 520, 0, 190, 300, 190) 112 t2m_conf(base, 5, 55); return 0 113 } 114 if id == 8 { // capsule/pill: 3 fat spheres, wide blend 115 t2m_set(base, 0, 0, 0 - 450, 0, 380, 400, 380) 116 t2m_set(base, 1, 0, 0, 0, 380, 400, 380) 117 t2m_set(base, 2, 0, 450, 0, 380, 400, 380) 118 t2m_conf(base, 3, 220); return 0 119 } 120 t2m_set(base, 0, 0, 0, 0, 900, 900, 900); t2m_conf(base, 1, 120); return 0 // sphere 121} 122// convenience: prompt -> field 123func t2m_prompt(base: i64, prompt: *u8) -> i64 { return t2m_gen(base, t2m_id_of(prompt)) }