Chapter 1 Introduction to Three-Dimensional Modeling 19 Copyright Goodheart-Willcox Co., Inc. Using a Visual Style The object you have created is now a 3D solid. If the drawing was based on the acad3D.dwt template, the model is displayed in the Realistic visual style. If the drawing was based on the acad.dwt template, the model is displayed in the 2D Wireframe visual style. As mentioned previously, there are 10 different visual styles from which to choose. Select an option from the Visual Style Controls fl yout in the viewport controls or the View panel on the Home tab of the ribbon. The Conceptual visual style provides a quick display of the model using shaded tones of the object color, as shown in Figure 1-22. The techniques used in this example are just a brief introduction to the creation of 3D models. Detailed descriptions of modeling, display, and editing techniques are included in the following chapters. Guidelines for Working with 3D Guidelines for Working with 3D Drawings Drawings Working in 3D, like working with 2D drawings, requires careful planning to effi ciently produce the desired results. The following guidelines can be used when working in 3D. Planning • Determine the type of fi nal drawing you need and the manner in which it will be displayed. Then, choose the method of 3D construction that best suits your needs—wireframe, surface, mesh, or solid. • If appropriate for the project, use 2D constraints to create a 2D layout or sketch. • For an object requiring only one pictorial view, it actually may be quicker to draw an object in 3D rather than in AutoCAD’s isometric mode. AutoCAD’s 3D solid modeling tools enable you to quickly create an accurate model, and then display it in the required isometric format using preset views. The VIEWBASE command can then be used to create a 2D drawing of the model. • It is best to use AutoCAD’s 3D commands to construct objects and layouts that need to be viewed from different angles for design purposes. • Construct only the features needed for the function of the drawing. This saves space and time, and makes visualization much easier. • Use 2D or 3D object snap modes in a pictorial view in conjunction with UCS icon manipulation to save having to create new UCSs. • Keep in mind that when the grid is displayed, the pattern appears at the current elevation and parallel to the XY plane of the current UCS. Figure 1-22. The Conceptual visual style provides a quick display of the model using shaded tones of the object colors.