Continuous Surface Embeddings

W (since this energy is non-negative, W is positive semi-definite). This is a required normalization factor to account for the different areas of the triangles w.r.t. the continuous surface being approximated. Finally, we sometimes require a divergence operator. We can use this equation to find C given Π, or to find Π given C . In practice, we found it beneficial to add three more standard constraints when resolving for C .