As illustrated in the previous chapters, there are no surfaces in a wireframe model; it consists only of points, lines, and curves that describe the edges of the object. Surface modeling was developed to provide the surface information that is missing in wireframe modeling. Essentially, defining the skin of a design creates a surface model. Although it is possible to create a surface model without using a wireframe model, in most cases it is much easier to create a surface model on top of a wireframe model. In surface modeling, a wireframe model can be used to provide information about the edges and corners so that the desired faces can be easily positioned and placed. Surface modeling is more sophisticated than wireframe modeling in that surface modelers define not only the edges of 3D objects, but also the surfaces. Surface modeling provides hiding, shading, and rendering capabilities that are not available in wireframe modeling. Surface models do not provide the physical properties that solid models provide, such as mass, weight, center of gravity, and so on. Starting Up AutoCAD® 2010. 1. Select the AutoCAD 2010 option on the Program menu or select the AutoCAD 2010 icon on the Desktop. 2. In the AutoCAD Today Startup dialog box, select the Open a Drawing icon with a single click of the left-mouse-button. 3. Click on the V-block.dwg filename to open the V-block wireframe model that was created in the previous chapter. (Use the Browse option to locate the file if it is not displayed.) The UCS Toolbar and the Meshes Commands. 1. In the Menu Bar, select [Tools] [Toolbars] [AutoCAD]. 2. Select UCS, with the left-mouse-button, to display the UCS toolbar on the screen. The options available in the UCS toolbar allow us to quickly orient and align the UCS. 3. Click on the Mesh Modeling tab to show the meshes commands available in AutoCAD. • Note that a variety of surface modeling commands are available to create meshes. On your own, move the cursor on top of the different commands and read the brief description of the commands. Creating a Surface Using the 2D Solid Command. The first generation surface command available in AutoCAD was the 2D Solid command. In AutoCAD 2010, this command can only be accessed through the command prompt area, which is an indication that this command is slowly being phased out. The 2D Solid command is used to…
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Northrop Grumman wins naval contract Experienced with 3-D modeling and 2-D drawings/documentation using a variety of CAD software packages including AutoCAD 2010, • General computer skills |
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A look at AutoCAD with Lynn Allen: 2011, Mac, piracy and more
2010 was a major year for AutoDesk, if only for the fact that they brought back AutoCAD for the Mac platform after nearly two decades.
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