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Ví dụ, nếu bạn tạo một bàn học và nhân bản nhiều lần như là một ví dụ để điền vào một căn phòng, sau đó thay đổi các tham số của một trong các bàn sẽ tự động thay đổi nó cho tất cả các bàn khác cũng có. Một mảng là một tập hợp rời rạc của các đối tượng thường xuyên đặt hàng. | Part III Modeling Basics You use the Smoothing Groups option to assign a subobject to a unique smoothing group. To do this select a subobject and click a Smoothing Groups number. The Select By SG button like the Select By ID button opens a dialog box where you can enter a Smoothing Groups number and all subobjects with that number are selected. The Clear All button clears all Smoothing Groups number assignments and the Auto Smooth button automatically assigns Smoothing Groups numbers based on the angle between faces as set by the value to the right of the Auto Smooth button. The Polygon Properties rollout also includes options for setting vertex Color Illumination and Alpha values. Subdivision Surface Editable Poly objects include an extra rollout called Subdivision Surface that automatically smoothes the object when enabled. The Subdivision Surface rollout shown in Figure 13.27 applies a smoothing algorithm known as NURMS which stands for Non-Uniform Rational Mesh Smooth. It produces similar results to the MSmooth button but offers control over how aggressively the smoothing is applied the settings can be different for the viewports and the renderer. FIGURE 13.27 The Subdivision Surface rollout includes controls for NURMS subdivision. Cage color Cage Selection color To enable NURMS subdivision you need to enable the Use NURMS Subdivision option. The Smooth Result option places all polygons into the same smoothing group and applies the MeshSmooth to the entire object. Applying NURMS with a high Iterations value results in a very dense mesh but the Isoline Display option displays a simplified number of edges making the object easier to work with. The process of smoothing adds many edges to the object and the Isoline Display option displays only the isolines. The Show Cage option makes the surrounding cage visible or invisible. The two color swatches to the right of the Show Cage option let you set the color of the cage and the selection. The Iterations value .
