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Thread: [Award Winner] Photoshop: Using the Clone Stamp tool for better Brush work

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    Guild Master Gracious Donor Midgardsormr's Avatar
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    Post [Award Winner] Photoshop: Using the Clone Stamp tool for better Brush work

    As anyone who has made brushes in Photoshop has doubtless learned, you cannot make a two-toned brush. That is, if you make a tree brush and try to overlap two strokes with it, the tree beneath will show through the one on top. The reason for this is that Photoshop's brushes are a greyscale image where black pixels are completely opaque, white pixels are transparent, and grey pixels are translucent. This allows you to paint with the brush in any color you want, but it prevents you from using it to make nice isometric mountains and forests:

    Click image for larger version. 

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    Obviously, that brush is just a hack job I made for the purposes of this tut, so don't complain about its lack of quality. Anyway, when you use a brush in the way Photoshop intends, you get results like those on the left. I intend to show you how to make the same brush give you what appears on the right.

    The first thing to do is to create or load your brushes. If you're only going to use them for a single map, it isn't really necessary to save the image as a brush, but it is handy if you want to do more than one map in a certain style. I won't cover that, since there are loads of brush-making tuts out there already.

    The next thing is to create a palette area in your document from which you can sample the brushes. You can do this in a separate document, but it's easier if you do it in the same doc you're working in. Go to Image > Canvas Size... (Alt + Ctrl + C). Set your Anchor Point to one of the sides of your existing canvas. This will cause the new area to appear on the opposite side of the one you clicked.
    Click image for larger version. 

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    You want to expand the width (or height, if you set your Anchor Point on the top or bottom) enough to hold the brushes you plan to use.

    Now you should have a transparent section to one side of your canvas. Make a new layer to hold your palette, and drop a single stroke of your bush in that area, like so:
    Click image for larger version. 

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    You'll notice that the tranparency checkerboard grid is showing through the mountain. If you move the layer over your existing map, you'll see the map's colors and lines showing through it. This tells you that if you just layer the brush over itself, the copies underneath will show through. So the next step is to paint white behind the brush as a mask. Make a new layer and put it beneath the palette layer, then just paint in white where you want the brush to act as a mask.

    Here I've moved my sample over onto the map to illustrate how the background no longer shows through:
    Click image for larger version. 

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    Now, grab the Clone Stamp Tool (S), make sure that the "Sample" box shows "All layers," and the "Aligned" box is unchecked.
    Click image for larger version. 

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    "Current layer" only takes the sampled pixels from the layer you're currently working on, which would force you to constantly change back to your palette layer to pick a new brush. "Current and below" samples from the layer you are working on and all the layers beneath it, which will work if you place your palette beneath your working layers.

    "Aligned" causes the sample point to remain in the same place relative to the cursor after your first click, which is handy for making textures but not useful for what we're doing. Turning it off ensures that your sample point stays put.
    Last edited by Midgardsormr; 12-08-2009 at 11:52 AM.
    Bryan Ray, visual effects artist
    http://www.bryanray.name

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