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Thread: [Award Winner] Using GIMP to Create an Artistic Regional RPG Map

  1. #611
      ttrush is offline
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    Quote Originally Posted by RobA View Post
    Post 7: Create the sea, continued.

    Now we want to stretch out the colours in the “Sea” layer across the entire black to white range. With the sea layer selected, auto normalize the image (Colors->Auto->Normalize). The histogram will now have little gaps in it. As the greys have all been spread out. To fix this, select the non-transparent area (by clicking on the “Sea” layer and selecting “Alpha to Selection”. Invert the selection (Select->Invert) and fill the area with white. Remove the selection (Select->None) and apply a 20px Gaussian blur.
    During this part of the process, I cannot fill the transparent area with white. I will attach a photo of my map. I would attach a gimp file if I knew how to haha.[Award Winner] Using GIMP to Create an Artistic Regional RPG Map-maptest.png

  2. #612
      RPMiller is offline
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    I see the problem. Don't "select" anything. Just make sure that the sea layer is the current layer. Then continue with the steps starting at "...auto normalize..." The rest should be straight forward I believe.
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  3. #613
      Chin Swift is offline
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    EDIT: I solved the problem. I had to set the new layer to transparent when creating it before adding the noise. I'm thinking it had something to do with a solid fill on a new layer doesn't create an alpha channel causing the overlay blend mode to not funnctionn properly? I don't know though...

    sorry for necroing the thread!


    Create new layer called “Land Noise” and fill it with clouds (Filter->Render->Clouds->Solid Noise) Set the detail to the maximum (15) and the X and Y size to the max (16.0). The larger the size, the more randomness your final coast will have. Give it a new random seed and jot down the number (I put it in the layer name afterwards as a reminder). And change the blend mode to Overlay.
    At this point when I set the layer to overlay nothing changes. I see no effect of the cloud layer at all.

    [Award Winner] Using GIMP to Create an Artistic Regional RPG Map-nolandnoise.jpg

    Create a new layer called “Land Clip”, filled with white above that, and set its blend mode to Lighten. You will have a white image. Now, with this layer selected, Open the levels dialog (Colors->Levels) and grab the white output slider, and drag it down. As this happens, the land will be revealed. Stop at a place you like, and click OK.
    I then add the white layer and set it to lighten. Drag down the slider and it just returns the original coast without any noise distortion.

    [Award Winner] Using GIMP to Create an Artistic Regional RPG Map-noisgolj.jpg

    I can't for the life of me figure out why this isn't working. I'm following the tutorial by the letter and have gone over this part about 6 times now. It's becoming quite annoying. Could someone explain to me why this isn't working as intended?

    The image is 4096 * 4096. It's the only deviation from the tutorial but I can't see how that would effect this process.

    HALP!
    Last edited by Chin Swift; 08-25-2014 at 05:01 PM.

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