Comparison with appearance-driven paint design

Fig. 3.4a and 3.4b illustrate the difference in both approaches. The change of flakes density in composition model affects not only glitter intensity, which is the main appearance counterpart of this composition parameter (Fig. 3.1), but also shade color (it becomes a bit more greenish, as is clearly seen in the left column of the figure). In appearance-based design, glitter intensity and shade color are kept by the program as independent attributes (right column).

Fig. 3.4a. Composition-based design (example). In composition-based design, the change of flakes density mainly affects glitter intensity but it also does affect shade color (it becomes more greenish here).

Fig. 3.4b. Appearance-based design (example). In appearance-based design, the change in glitter intensity does not affect shade color.