How to create a simple pattern ?

Discussion in 'Design and Graphics' started by NStocks, May 2, 2010.

  1. NStocks macrumors 65816

    Joined:
    Apr 3, 2008
    Location:
    England
    #1
    Hi,

    So I need a page/document that is filled with tiny white dots. This is to use in a architectural program that confuses the rendering engine to create a translucent glass pane...

    How can I create a Photoshop document that is simply filled with tiny white dots then apply a quick mask? ( these are instructions from another forum )

    Sorry for the ' dumb ' question :p

    Thank You
     
  2. citizenzen macrumors 65816

    Joined:
    Mar 22, 2010
    #2
    How big are the little dots? How far apart are they supposed to be from each other?

    If I wanted to control (completely) the size of the dots and the space between them I would create a small area, then duplicate that layer, then Filter > Other > Offset the duplicated layer... and so on... and so on... until I had a page filled with small dots.

    If it didn't matter (exactly) how big the dots were or how far apart they were spaced I would start with a grayscale file filled with a solid gray background (25% gray). Then I'd use the method illustrated below. You'll have to play with the numbers (and the level of gray you start with), but this will give you an idea...
     

    Attached Files:

  3. NStocks thread starter macrumors 65816

    Joined:
    Apr 3, 2008
    Location:
    England
    #3
    That works in terms of the dots but I also need a alpha mask...


    " "Masking" means creating an alpha channel in Photoshop to create transparency in cad. " ( from a CAD forum )

    How do I create this channel to the document I created ? I've tried doing this myself but it doesn't look any different...

    Thank You
     
  4. citizenzen macrumors 65816

    Joined:
    Mar 22, 2010
    #4
    1. Create the dot pattern like I showed you.

    2. Convert the image from Bitmap to Grayscale, RGB, or CMYK

    Depending on the color space you will be working in with your drawing

    3. Open your Layers palette.

    4. Duplicate your Background layer

    The background layer cannot be transparent, so you need to create an new layer that can support transparency. You should now have two layers of dot patterns. You can at this point delete your Background layer.

    5. With your new top layer selected, click the button Add Layer Mask

    Third button from the left at the bottom of the Layers palette. As a general rule I unclick the chain link between the layer and the layer mask.

    6. Option-click on the mask icon in your Layers palette.

    You should see a blank page, as you haven't yet applied any image to your Mask.

    7. Go to Image > Apply Image and apply the Layer image onto the Mask...

    Get familiar with the Apply Image function. It is an incredibly useful tool. Instead of Copying and Pasting the image from your layer you can Apply it instead. You can also use this tool to invert your image so the dots are white and the background is black. Masks work by allowing image on the Layer to "pass through" the white and get "blocked" by the black.

    8. Click back on your Layer icon in the Layer palette. Your dots should now show transparency (checkerboard pattern) in the background area.

    9. Fill the Layer with White and you will have white dots on a transparent background.
     
  5. NStocks thread starter macrumors 65816

    Joined:
    Apr 3, 2008
    Location:
    England
  6. citizenzen macrumors 65816

    Joined:
    Mar 22, 2010
  7. NStocks thread starter macrumors 65816

    Joined:
    Apr 3, 2008
    Location:
    England
    #7
    I'm looking for a different affect int he CAD program I'm using and the member on another forums has asked me to show :

    "The four channels of your dots image"

    How :confused:

    ... Never really used channels so I don't know what I'm looking for !

    Thank You
     

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