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In this movie, we're going to begin the process of creating these rays coming out of the moon, not something you see very often, but a pretty cool effect. And we're going to do so using the Polygonal Lasso tool. And we're going to start things up by drawing these rays outward from the center of the image. So I'm going to zoom out slightly here and press Ctrl+A or Command+A on the Mac in order to select the entire image. We're going to use that same trick where we find the center point. I'll press Ctrl+T or Command+T on the Mac to enter the Free Transform mode or press Ctrl+R or Command+R on the Mac to bring up the Rulers and I'll drag guidelines, both the Horizontal guide and the Vertical guide out from the rulers.
Again, if you can't see those guidelines, go the View menu and choose Show and then choose the Guides command and turn it on. Having created the Guides, I'll press the Escape key in order to escape out of the Free Transform mode. I'll press Ctrl+D or Command+D on the Mac to deselect the image. And then, I'll press Ctrl+R or Command+R on the Mac in order to hide the rulers. Notice directly below the Marquee is the Lasso tool, which you can get by pressing the L key. And the Lasso tool allows you to draw Free Form selections like so, which means that you have to be pretty darn gifted, especially if you're using a mouse to draw a reasonable looking selection outline.
I use the tool very rarely, with one big exception, I'm going to press Ctrl+D or Command+D on the Mac to deselect the image. Where the Lasso tool really shines is when you're creating straight sided selection outlines. So for example, as long as there is no selection active, you can press and hold the Alt key or the Option key on the Mac, and as long as you keep the key down, you can click with the tool in order to draw a straight sided selection like so, and this can be very useful indeed, especially when you consider that after you get done roughing in a straight edge selection outline, you can go out to the Select menu, choose Modify and then choose Smooth, in order to round off the corners.
But what we're going to do is create a series of rays. Let me show you what that looks like. I'm going to zoom out even more from this image. Press Ctrl+D or Command+D on the Mac to deselect the image. And I'm going to start right there at the center where the guidelines intersect, and I'll press the Alt key or the Option key on the Mac. And then I will click out here in the pasteboard and then, I'll click at a second point, like so, and then I'll release and that goes ahead and draws a little triangle. Now I'm going to zoom back in for a moment just so that we can see things a little more closely.
Once you have a selection outline in place, the Shift and Alt key start to serve different purposes. So if you press the Shift key and drag with the Lasso tool, you add to the selection, as you see here. If you press the Alt key or the Option key, notice that you get a little minus sign next to your cursor. And then, if you drag around, you subtract from your selection outline. And if you press both the Shift and Alt Keys at the same time, that would be Shift+Option on the Mac, you end up with a little X next to your cursor, in which case you can drag around an area to keep just the portion of the selection that falls inside your drag.
So in other words, you're keeping the intersected area. And as a result, I end up losing my ray. Well of course I don't want that. So I'll press Ctrl+Z or Command+Z on the Mac in order to undo that change. I have my ray back as you can see, so every selection maneuver is undoable. And you can even press Ctrl+Alt+Z or Command+Option+Z on the Mac to back step through your selections. So selections are tracked by history as well. Now the upshot of all this is I can't just start Alt+Clicking or Option+Clicking with the Lasso to add more rays, because if I do, I'll subtract from my existing ray.
Instead I need to switch over to the Polygonal Lasso tool and I'll show you how that works in the next movie.
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