hampa16:
The whole purpose of these blocks is to let you set up a structure such that you can create screenshots of it that make it easy to cut everything but the structure from the screenshot, and get a nice, clean, sharp edge around it, so that you don't have to do a ton of manual select-and-erase operations.
Try this:
1. Place a few pieces of cobblestone on the ground:
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2. Now, place some of the greenscreen blocks behind the cobble. Place enough greenscreen blocks so that they stick out past the sides, top, and bottom of the cobble -- so that the cobble appears to be completely surrounded by the green field.
Your phone or window isn't wide enough to display the code box. If it's a phone, try rotating it to landscape mode.
- Code: Select all
GGGGGGG
GGGcGGG
GGcccGG G = the greenscreen block
GcccccG
GGGGGGG
3. Take a screenshot.
4. Open the screenshot file with your favorite graphic editor (GIMP, Photoshop, etc).
5. Give the screenshot an alpha channel.
6. Use the select-by-color tool to select the green areas.
7. Edit -> Cut, or maybe press delete.
8. Un-select all.
9. Use the eraser tool to get rid of the rest of the parts of the screenshot you don't want to keep.
You now have an image of a stack of cobblestone with a transparent background, which you can then paste into some other image after you erase the rest of the image that you don't want. Imagine doing this with some block you've just invented, in place of the cobble. You could edit and scale the screenshot to use as an icon or something.
What you do with the part of the image you isolated from the rest is up to you.