![]() ![]() X and Y co-ordinates increase in the direction indicated by the UCS icon. As your cursor moves over the screen area you can see the change in X and Y co-ordinates by watching the co-ordinate statusĪrea at the bottom left of the screen ( X,Y,Z). These first two parts of the icon indicate the position and direction of the X and Y axes. Second, the icon contains a figure Y and an arrow head which points from bottom to top along the left hand side of the screen. First, the icon contains a figure X and an arrow which points from left to right along the bottom of the screen. The icon looks like the illustration on the right and shows 3 specific bits of information. In the bottom left hand corner of the drawing area is an icon, known as the UCS icon. When you first start up AutoCAD you are presented with a plan view of the drawing area. ![]() They decided upon has become known as UCS, User Co-ordinate Systems. When Autodesk, the makers ofĪutoCAD incorporated 3D into the program they needed some method for doing so without completely rewriting the software. Almost all the AutoCAD drawing and editĬommands can only work in 2D (the exceptions being commands like 3DPOLY and 3DFACE). ![]() If you just want to quickly find a description of the UCS options, click on the appropriate button on the QuickFind toolbar below.ĪutoCAD started life as a two-dimensional drafting program. The correct use of UCSs with AutoCAD is the key to producing good 3D models and they can also help with 2D work. ![]() This tutorial describes what UCSs are, why we need them and how to use them. ![]()
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