nx_viz3d.nx

nx_viz3d.nx -- LIB: the SOVEREIGN 3D viewport (foundation of Nishi first-party 3D visualization). Operator: "for all these 3d simulations and visualization from games to cad to stls to blender to zbrush ... lets get our nishi browser and 3rd party visualization and management s class exceed so i can see these things." This is the BEDROCK: fixed-point (NO-FLOAT, sovereign) 3D math -- rotate a point around Y, perspective-project it to 2D screen space -- so a mesh (vertices + edges/triangles) can be rendered to SVG and viewed/animated in the Nishi browser with 0 JavaScript. Fixed-point scale = 1024 (10-bit fraction); a 12-entry sin table (30 deg steps) drives a turntable. Integer division throughout; the camera distance keeps z+DIST > 0 so projection never divides by zero. NEVER-BRICK (#26): pure integer, bounded, deterministic, zero hardware-state writes. license_tier: ORIGINAL