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While the Lasso tool is good for quick uncomplicated image element selections, the Polygonal Selection tool enables much greater control over following the edge of a complex shape or element. Now we are going to begin by going up to where the Lasso tool is currently active and click and hold. That will pop-up the little fly-out menu for our tool options and I'm going to go over to the right here and select the Polygonal Selection tool. Now, I'm going to start at the bottom here and we'll begin by creating the point, and you will see what immediately happens is it creates a rubber band line and I can now start to create a series of points and each time I have the option to decide where that point is going to be.
So I'm going to start to work my way around this object and I think you can see right away. In the first instance, we used the Lasso tool on a simpler object which was fine, but I would never attempt to use the Lasso tool for this kind of complex object. As you can see, there is more complexity to the shape than I would ever want to attempt with it. So in this case, it's just a matter of kind of walking these little flying segments around your object and when you work on circular areas as I'm doing, it's best to work in shorter line segments. Otherwise, you will start to get an artifact that I call poker chipping that's where you can start to see the visible facets of the line elements that you have created.
Here, we come around, we are in the home stretch and I could sit here and click all day and nothing happens. You have to use the Enter key or the Return key and that creates your selection. So now that I have got this selected, I still have the option to add or subtract to it using the same tool. For example, I can see an instance here where that's a little inward, a little more than I would like. So if I hold down my Shift key, you will see I get the little plus sign. That means I can now add to this. So I'm just going to go in and just select a little bit more perhaps here and in this case just letting up adds to the selection.
It doesn't look like I quite did it, so I'll go out, just a little bit more here. And then as soon as I led up the Shift key, which I'm holding to add to that selection, that's what interprets it as your finish with the selection. So you do have the option with this tool as well to go around and refine it with the tool. Now, the reason you are seeing that little cross hair there is that lets me pick up the selection and move it if I want which I normally wouldn't want to do here, so if I do a couple of Undos, I'll get it back to where it was. And as we did before, if I do a Command+ C or Ctrl+C that copies and then if I do a Command+V or Ctrl+V that pastes it and it's just it's pasting it in place.
That's why nothing seems to be happening. But with the Layer Selection tool now active I can pick this up and move it around. So, that's a very good way to be able to select an area. The Polygonal Selection tool enables greater precision when selecting complex elements. Don't forget to use it in those situations!
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