Читать книгу Computer Aided Design and Manufacturing - Zhuming Bi - Страница 57

As shown in the middle six columns of Table 2.8, the number of faces (F), edges (E), vertices (V), bodies (B), inner loops on faces (L), and genuses (G) in a geometry is counted and the valid condition for a simple solid by the Euler–Poincare Law is applied. It shows that all of the objects satisfy the conditions as open objects.