 All About AutoCAD Blog
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| 23 Aug 2007 05:08:27 am |
 Getting started in 3D Modeling |
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When AutoCAD first went 3d, the LINE command was only a 2d command. It took an X and a Y for each end point. So a new command was added, 3DLINE, to accept the X, Y, & Z data for lines. I believe they did away with this command.
Modeling in 3D is a whole lot easier now then it was back then. To begin with you no longer need to create four lines to make a rectangle. Just use the RECTANGLE command and indicate two opposite corners.
So let’s start by modeling a block, using the RECTANGLE and LINE commands.
Open a new drawing and either type the command REC or pull down the DRAW menu and select RECTANGLE. For the first corner, enter 0,0,0. And for the second corner 10,12. You don’t need the third value since the rectangle will be drawn in the plane of the current UCS. ZOOM ALL to get it onto the screen.
Now create a second rectangle of the same size, only 8 in the Z axis. Start the RECTANGLE command. For the first corner, enter 0,0,8 and for the second corner, 10,12. The rectangles are on top of each other, so the screen looks the same.
Time to change the view. If your not familiar with the different standard views in AutoCAD, just type VPOINT -1,-1,1 and Enter. This is the SW Isometric View and now you can see the two rectangles.
To complete the block, you need to create lines connecting the corners. Set your OSNAP to include Endpoints and start the LINE command. Pick the left most corner of each rectangle to draw the first line. Then do the same for the other three corners.
See, your modeling in 3d. I know it’s not much but it is a beginning. You already know the geometry commands. You just need to learn more about the 3d viewing commands and of course some knowledge of User Coordinate Systems is also a big help. Watch for more about those in the future. |
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Category : General
| Posted By : AllAboutAutoCAD |  Comments[222] |  Trackbacks [0] |
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