Join Shaun Bryant for an in-depth discussion in this video Object-snap tracking, part of Learning AutoCAD LT.
- In the previous video, we looked at Object Snaps and how they work within AutoCAD LT. Let's have a look now at Object Snap tracking, which is another really useful Object Snap tool that you can use within AutoCAD. What it allows you to do is specify more than one point and track between those Object Snap points. It's a very neat tool. So we're back to our little angled polygon and our little red rectangle. And the reason I've selected these is they give me some useful points on both shapes to utilize my Object Snap tracking.
Now what I'm going to do is I'm going to draw a circle. So I'm going to go up to the layers here. Let's be sensible, let's make sure we use the right layer. I click on the Flyout menu, and I click on CIRCLE like so to make sure that I'm using the Circle layer for circles. Let's do the simple Object Snap tracking example first. I'm going to come down here. What I want to do on my Object Snaps first is make sure that my midpoint is switched on and my center is switched on. So you can see they're both ticked. I click away from the menu to lose it, and you can see now that they're all ready to go.
Right, so I want to draw a circle. Let's go up to circle here on the Draw panel on the Home tab on the ribbon, and select Center, Radius. So now, I want to draw a circle dead center of that rectangle. I could draw some construction lines, which would require me to draw lines instead of a circle. So let's just hit escape there, and what I could do is draw a line from one corner here using the endpoint snaps like that, and then right click and enter to finish.
And then I'll repeat the line and do it the other way. Now I now know that if I use that point there, that intersection to draw a circle, and come in there like that, use that midpoint, there's my circle like that. Let's type in five as a radius and enter. And then what I would do is I'd select those lines, right click and erase them. Lots of clicks there though just to get that circle in the center. So I'm going to select the circle, right click and erase. Let's go back to that circle command. Object Snap tracking is already on down here.
You can see it highlighted there in blue. Now if I just hover there over that midpoint, don't click on it, hover there over that midpoint, and don't click on it again; and as I track down, it shows me the intersection of those two midpoints. That is the center of my rectangle. So if I click once, drag the circle out, type in five as the radius and enter, a lot less clicks, a lot cleaner, a lot quicker. No erasing needed. Now let's have a look at something a little bit more complex.
Over here, I've got an angled line on my polygon. So if I selected the midpoint on the here as an Object Snap, and the midpoint on, say, this line as an Object Snap, what would happen if I drew that circle? Let's have a look and see. So Circle; Center, Radius. I'm going to go midpoint there, hover; and midpoint there, hover. Now there's nothing there to actually intersect. So if I come up here and hover over that one as well, I can have up to seven Object Snap tracking points.
Now as I drag, I can place the circle there. As I drag, I can place the circle there. So I can utilize either of those intersections. So if I click there and just drag that circle out and give it, say, a 2.5 radius, make sure I put a point and not a comma there, like so, otherwise that could be confusing. And as you can see, I've utilized that particular point there. Now I could do another circle now and hover over this point here again and the midpoint there again.
And as I drag outwards, can you see, there's the intersection there. It's slightly away from the center of that other circle. So if I come across and type in 2.5 again as the radius, you can see there that those two Object Snap tracking points basically give me different centers. So I would need to be careful using Object Snap tracking in that particular instance. Now again though, what I could do is do another circle. Center, Radius again, and I'll hover over this midpoint here and I'll hover over this midpoint here.
And as I come out this way, nice and quick and easy, there's the intersection, and I'll draw that one there. Again, I'll give that a 2.5 radius and enter. And you can see, I've got a totally different positioning for that circle there. So the Object Snap tracking is extremely useful. No construction lines needed and you carry on regardless and develop your drawing as you need to in AutoCAD LT.
- Opening DWG drawing files
- Starting a new drawing
- Saving drawings
- Drawing lines and shapes
- Working with the Snap and Grid features
- Editing objects
- Organizing drawings with layers
- Inserting blocks
- Creating layouts
- Adding text
- Adding and editing dimensions
- Printing your drawings