Rules to follow when assigning mesh data

When generating meshes from code, there are some strict rules to remember:

  • Don’t modify its data arrays directly, instead copy them to a temporary one, do the work, then re-assign it back to the mesh.

  • The vertices array must be assigned first, other arrays later. Once again, the number of vertices cannot exceed 65000.

  • Number of indices in the triangles array must equal to a triple of number of vertices.

  • Number of elements in the normals, tangents, colors and uv array must be equal to number of vertices, if assigned.