Subtitles of the Movie

We're now going to look at some of the Inquiry Commands in AutoCAD to obtain geometric information about objects on the drawing. We're going to go to our Tools Tab here on the ribbon and you'll notice there's the inquiry panel and the first thing we're going to look at is the Distance Command. So when I click on Distance here I'm prompted for me first point, if I now go let's say from point 8 using the end point snap, to point 7 here using the end point snap I get lots of information available to me on the Dynamic Input such as the distance from point 8 to point 7, the angle in the X, Y plane from point 8 to point 7 is 32, angle from the X, Y plane won't apply because it's a 2D drawing so its flat. Delta X, Delta Y, Delta Zed, delta X the distance moved in the X coordinate direction. Delta Y the distance moved in the Y coordinate direction and Delta zed the distance moved in to the Zed coordinate direction, again Zent won't apply because it's a flat 2D drawing, we're not using 3D in this particular course. So if I hit Escape now that disappears, that's the distance Command. So let's have a look at something different now, let's have a look at say the List Command which is this little scroll here. Click on List and what I'm going to do, I'm going to select circles 2 and 3 and 4 and then I'm going to press Enter to confirm and now the AutoCAD Text window appears. This is an extension of your Command Line down here. So what I've got there, if I look here I can actually see now, there's my AutoCAD Text Window, its minimized so I bring it back up on the screen. So there is circle 2, circle 3 and circle 4. Notice the numbers don't appear because its objects that you've selected in order. The numbers are just bits of text to aid us to visualize what's on the screen. So we can see there that the radius of circle 2 is 17.25 and the subsequent Redi-Eye for circles 3 and 4 are 10 and 10. To lose the Text Window again you can press the F2 Key or you can just click on the little red box here. So that's the List Command. Now the Locate Point Command is this one here, ID Point, when I click on that and come into the drawing it prompts me to specify a point. If I specify point 1 there you'll see that it gives me the X, Y and Zed values of that particular coordinate of that end point snap. So in this case X is 242.6831, Y is 253.13553, Zed again is 0 because we're in a 2D drawing. Now last but not least let's have a look at the Area Command in AutoCAD, it's this one here. When I click on Area it allows me to calculate areas of objects. Now the outline line around this object, the gross area is only formed of lines, its not a closed area, its just a line segment sharing common points. So what I need to do here now is I need to go around the area in a dot to dot fashion to calculate the area. I'm then going to subtract circles 2, 3 and 4 and the rectangle between 10 and 11. If I press the Down Arrow Key I get the object to add. I'm going to add first and then I'm going to literally just click on each end point snap as I go. Notice I'm going counterclockwise, you can go in either direction as long as you click on each end point snap. Now these end points are exact geometry which allows AutoCAD to calculate the exact area. Click on point 1 again like so and then come away from the objects and press Enter once. I'm back now to the Main Command, specify first corner point, notice on the Command Line you will see now, look, there are actually numbers on the Command Line and the total area at the moment is 27582.5327. I'm going to press the Down Arrow again and I'm going to go into Subtract Mode and it now prompts me to specify first corner point. If I press the Down Arrow again though I can select objects instead of corner points. So I select object now and you should have a prompt on the screen saying Subtract Mode, select Objects. I now select circle 2, circle 3, circle 4 and then the Rectangle between 10 and 11. I then press Enter and I then press Enter again to finish. Now where have all those numbers gone that I've calculated? Well if you press the F2 Key now to bring up the Text Window and just drag upwards using your bar here, let's have a look at where we are. So there's the Area Command there, there's the Add Option there and there's all the points that I clicked on going around the edge of the gross area of the object. So there's our total area just there. Then I went subtract objects and there's the circles 1, 2 and the third circle, circle number 4 is there. You can tell that because it says circumference. Then I've got an area and a perimeter which indicates the rectangle, so the total area after subtracting the circles and the rectangle is that value there, 24255.3940. If I look at the total area after I've subtracted the circles it's that value there. 26019.3940. You can distinguish the 2 like I said because of the circumference and the perimeter. I press F2 to lose the Text Window and I'm now finished calculating my area in the drawing.