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By choosing to add or subtract from a selection you can create all kinds of cool shapes. Let me go ahead and show you how that works. First of all I'll show you the easy way to add and subtract from a selection. First of all you can just draw something with the selection tool, then hold down the shift key and draw something else and you'll add to the selection you have there. Likewise what you could do is you can hold down the alt or option key and you get a negative sign and now you can subtract from that selection. You can do the same thing and also have that available to me at all times by going to the select menu and choosing to save and load selections. Let's see how that works. The first thing I'm gonna do is I'm going to hold down the shift key and I'm gonna hold down either alt or option depending on whether your on a Macintosh or a windows PC and I'm gonna click in the center of this moon. I'm gonna draw out a marquee and I'll move my mouse now, I let go of the shift and alt or option key to move that and put it where I want it. Now I'm gonna go to select, save selection and I'm gonna call this moon and it's gonna be in the brand new channel and as you see here the operation is new channel. These are grayed out right now because they're gonna be active when we come back to this in just a second. So now I'm going to create a brand new selection and we are gonna save that selection and load it and you'll see what happens. Now check this out, I'm gonna grab my polygonal lasso and I'm going to draw an outline around this window pane, a part here that's blown off. And what I'm going to is I'm gonna go to select, save selection yet again but this time I'm gonna go to my channel list and choose moon and now these guys are no longer grayed out. I'm gonna add this selection to the moon so that when I load this both will be loaded at the same time. Now I'm going to press command or control D to deselect and choose select, load selection and moon is selected already for me. click OK and now I have both. But wait there's more. I'm gonna use my polygonal lasso tool to draw a zig zag shaped like this and I'll just do something crazy like a lightening bolt or something and I'm going to go back to select, save selection, choose moon, and this time I'm going to subtract from channel. So what's gonna happen is this shape is going to be subtracted from the shape that we already had which was the moon and the beam. So I'm going to deselect, select, load selection, moon is selected and now look what happens. I have very unique and intricate pattern here. Now I'm gonna draw a completely different shape over here. I'm gonna draw another ellipse and what I'm gonna do at this point is I'm gonna save this selection as something different. So I'll call this circle. Just want to show you something else with the intercept here so I'm gonna choose circle and I'm gonna draw a rectangle this time and now I'm gonna go to select, save selection, I'm gonna choose circle from the list and I'm gonna choose intersect with channel. Now when I go to select, load selection and I choose circle you see that I have a shape that's a combination of where those two objects met. So I have the roundness of the circle and I have the rectangle as well. So I can choose to create a very unique shape that way as well. So all you have to do is experiment to get used to how these work. But when you have the ability to save selections and cut and add to them you can create some very, very, complication shapes, so just give it a try.
| Course: | Adobe Photoshop CS3 |
| Author: | Dwayne Ferguson |
| SKU: | 33782 |
| ISBN: | 1-933736-98-4 |
| Release Date: | 2007-08-02 |
| Duration: | 9 hrs / 161 lessons |
| Work Files: |
Yes |
| Captions: | No |
| Compatibility: |
Vista/XP/2000, OS X, Linux QuickTime 7, Flash 8 |