Join Jim LaPier for an in-depth discussion in this video Selection methods, part of AutoCAD for Mac 2015 Essential Training.
- So far when selecting the objects, we've done it one by one, clicking on each object we've wanted to select. There are, however, a number of methods for selecting multiple objects at once. Two of these and the most common two are known as selection window and crossing window. Selection windows are always drawn from left to right and they're identified by a blue fill and a solid line. It doesn't matter if I drag my cursor up or down as long as I'm moving my cursor from left to right.
Selection windows only select objects completely inside of the window we're creating. In this case, we can see it's only selecting the two circles as they're the only two highlighted objects. They're the only two objects completely enclosed inside of our window. If I drag my cursor down, just past the edge we can see that it picks up those last two circles but only because they're completely enclosed. If I come up just a little bit, I lose those two circles. The mirror or the opposite command is called a crossing window.
This is done by moving the cursor from right to left. We can see it's visibly different as we have a green fill and a dotted line. Crossing windows select every object that comes in contact with the window whether it's enclosed or even just touching the window. Notice as I drag my cursor up I don't lose these two circles until they're completely not touching the window. And again, it doesn't matter if I move my cursor up or down as long as I'm moving the cursor from right to left.
There is a third selection method but it's only available while in a command and this is called a fence line. I'm gonna enter the copy command found here and anytime that AutoCAD asks me to select objects I can type in F for fence line and press return. A fence line is a selection line. Only objects that come in contact with my fence line will be selected. Fence lines can be drawn as just a single line or as a multiple segment line, just like a poly line.
Again, any object that comes in contact with my fence line will be selected. I'm gonna press return, press return again to let AutoCAD know I'm done selecting my objects and just drag these over as copies so we can see what was selected. A newer method of selecting objects was introduced in AutoCAD for Mac 2015 known as the lasso selection tool. To use the lasso tool we're gonna click and drag our cursor rather than clicking and releasing to create the windows like we were before.
I'm gonna click and drag and as I start to move my cursor around we can see a shape is being formed by the movement of my cursor. We can see the green fill and the dashed line which signifies that this is a crossing window. This means that anything that's inside of the lasso or anything touching the lasso line is gonna be selected. Notice I haven't let my cursor go quite yet. I still have my finger on my mouse. While holding it, if I press the spacebar, I can actually cycle through and change the lasso selection method from crossing to selection.
With a selection window, only the objects that are completely inside of the window will be selected. In this case, my three circles. I can press the spacebar one more time and change my lasso into a lasso fence line. Again, with fence line, only objects that cross the fence line will be selected. In this case, just the four rectangles. I'll press this again and we can see that right now every object is selected except for my circle in the lower left corner. One more time, and I just have my three circles.
There are two other selection methods not nearly as precise but very, very useful. And these are, again, also only available when you're in a command. I'm gonna use the Erase command found here and when I'm asked to select my objects I'm gonna type in P and press return. P stands for previous. Remember the copy command that we invoked earlier that selected the three circles and copied them over to the right, those were the last three objects that we'd used in a command. So, they are my last or previous selection set.
I can easily go back and access just those objects for my previous command by just typing in P when I'm asked to select my objects, and pressing return. The last selection set type that we'll show you is called All. I'm asked to select my objects and I'm just gonna type in the word All in the command prompt. And now I've selected all the geometry that's in my drawing. I'll press return and I've erased everything. Obviously to modify our objects we must first select them so understanding the different selection methods is very important to you work with AutoCAD for Mac.
- Accessing palettes
- Changing preferences
- Opening and saving files
- Working with views
- Creating basic geometry: lines, ellipses, splines, and more
- Selecting, moving, copying, and scaling geometry
- Working with layers
- Using gradients
- Creating blocks and dynamic blocks
- Working with references
- Creating layouts
- Annotating drawings
- Plotting and sharing
- Starting in 3D
Skill Level Beginner
1. The Interface
2. File Management
4. Basic Geometry
5. Geometry Tools
6. Modifying Geometry
8. Advanced Objects
11. Plotting and Sharing
12. 3D Basics
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