Chapter 19 - Normals Shading

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Figure 19.21 Normal Square A square face and four normals. Compare Figures 19.21 and 19.22.
Figure 19.22 Normal Square Shaded A square face with two normals pointing along the positive Z axis and two normals pointing along the positive X axis. Compare Figures 19.21 and 19.22.
Figure 19.23 Half Column A smooth-shaded half column using a crease angle. Compare Figures 19.23, 19.24a, 19.24b, 19.25a and 19.25b.
Figure 19.24a Half Column Crease Angle A smooth-shaded half column using a crease angle. Compare Figures 19.23, 19.24a, 19.24b, 19.25a and 19.25b.
Figure 19.24b Two Half Columns Crease Angle Seam A smooth-shaded half column using a crease angle - note seams where each smoothly shaded half-column meets. Compare Figures 19.23, 19.24a, 19.24b, 19.25a and 19.25b.
Figure 19.25a Half Column Normals A smooth-shaded half column using a crease angle. Compare Figures 19.23, 19.24a, 19.24b, 19.25a and 19.25b.
Figure 19.25b Two Half Columns Normals Seamless A smooth-shaded half column using a crease angle. Compare Figures 19.23, 19.24a, 19.24b, 19.25a and 19.25b.
Figure 19.26 Normal Shaded Elevation Grid An elevation grid using a special shading effect.
Figure 19.27 Square Face Animating Normals An elevation grid using a special shading effect.

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