Generate UV sphere geometry matching Babylon's CreateSphere exactly. Babylon uses: totalZ = 2 + segments rows, totalY = 2 * totalZ columns. Default: 32 segments → 35×69 = 2415 vertices.
Generate UV sphere geometry matching Babylon's CreateSphere exactly. Babylon uses: totalZ = 2 + segments rows, totalY = 2 * totalZ columns. Default: 32 segments → 35×69 = 2415 vertices.