Lab Scientist

Note: Triangles: 146,140 in total (GLB, triangulated), inside the brief's 120k-150k. Before triangulation the meshes are 97.8% quads (72,257 of 73,883 faces). The densest meshes are the coat with its folds, collar, lapels and pockets (28,544 tris), the head/face (14,450), the gloved hands (14,240) and the 555 hair cards (12,210). The body and head are one continuous sculpted surface: a Catmull-Clark subdivided quad cage (16-segment torso rings, 10-segment limb rings with loops on the shoulder, elbow, wrist, knee and ankle joints, 4-ring fingers with knuckles) welded to an analytic sculpted head. The eyes and mouth are concentric ring patches (eyelid loops that wrap the eyeball, lip loops on a closed slit with a short mouth bag). Eyes are separate spheres with an iris plane and a clear cornea shell; the teeth are a separate mesh behind closed lips. Clothing is separate offset meshes with thickness, sculpted folds, seams, turned hems, pockets, buttons and buttonholes. Hair is 555 alpha-tested cards over a scalp shell and a painted hair cap; brows and lashes are cards too. Textures: 17 procedural PBR sets were authored at 4096x4096 and written to dist/textures-4k/<set>_{basecolor,normal,roughness,metallic,ao}.png (85 PNGs). They are in glTF orientation with OpenGL-convention normals, so they drop straight onto the GLB's UVs. Sets are named by mesh role: skin_head, skin_body, eyes, teeth, hair, sweater_knit, sweater_rib, trousers, coat, gloves, socks, shoes_leather, shoes_sole, plastic, metal, glass, lanyard. The small parts share neutral detail sets: plastic (buttons, pens, glasses frame, ID card), metal (clips) and glass (flask, lenses, card holder). dist/model.glb (28.3 MB) embeds 2048x2048 copies downsampled from the same maps: base colour, normal and a packed occlusion/roughness/metallic image per set (glTF has no separate roughness/metallic/AO slots), as JPEG except the hair base colour, which stays PNG for its alpha. The base colour holds pigment only; AO is a separate map (ray-cast against the head, eyes, teeth and ears for the face). No logos or text anywhere; the ID card is blank. Scale: metres, +Y up, facing +Z, origin between the feet, soles on y = 0. Barefoot stature is 1.58 m (crown 1.60 m in shoes; the bounding height including hair is 1.617 m), about 7 head-heights for a petite adult, not the 7.5 of the mannequin-figure base. Honest limits: this is a procedural, code-only sculpt, not scan fidelity. The face is a believable East Asian woman in her late thirties but simplified (analytic features, no fine wrinkle geometry, no subsurface scattering). The hair cards are static and groomed procedurally, and the cloth is sculpted, not simulated. The model is rig-ready by topology only: no skeleton, skin weights or blendshapes are included. The cornea and the flask liquid are factor-only materials without maps, and the gums share the enamel texture (hidden behind the closed lips). Feet and socks are slightly squeezed inside the shoes to prevent poke-through. Part ids use 'labscientist.*' rather than 'lab-scientist.*' because the kit's plan-check only accepts ids matching /^[a-z][a-z0-9]*(\.[a-z0-9_]+)*$/ (no hyphens); the slug stays lab-scientist. Direction: mannequin-figure with overrides recorded in design-plan.md (sculpted continuous human, cloth/hair/face, 16+ material roles, 150k triangle budget). glb-lint therefore warns on material count (32 vs 6) and triangle budget (146k vs 80k), plus the expected heuristics for nested and floating parts. Checks: three-check PASS (22/22); it was run with NODE_OPTIONS=--max-old-space-size=16384 because the checker marshals the 28 MB GLB through the page and exceeds Node's default heap. glb-lint PASS (0 errors) against the brief-derived contract in design-check/requirements.json.