Tutorial: Create a sparkling Disco Ball
Create a new file using these dimensions:
Of course you can use any size but pay attention that it is an aspect ratio of 2:1 (we will need this later)
For this step: Fill the background with different colors. You can also use a variation of only one color. I used a soft brush with the “Color from Gradient” enabled in the preferences. I also used some Brush dynamics to fill the background.
To create the mirrored glossy surface go to Filter / Distort / Mosaic and use the values from the picture.
Make sure that you disable the option “Allow tile splitting” on the right side of the filter dialogue. The option “FG/BG lightning” is used to fill the spaces between the mosaic with color. In my case this would be black.
Scale the image
To avoid distortions when we later use the Map filter it is necessary to scale it on the width. To do this use Image / Scale: Enter 400px width. Disable the chain-symbol. You should then have a square image.
Now we get to the important step of the tutorial.
Filter / Map / Map object. Use map to a sphere in the dropdown. Use the following values from the images. You don’t need to make changes in the “orientation” tab.
In step 4 we already got a nice output. We need to do some more fine tuning however. For more sharpness use Filter / Enhance / Unsharp Mask with these values:
Now we need some sparkle. For that create a new brush using the brushes editor (bottom right). Change the foreground color to white. Click on some places in the image. (Further details on how to create sparkle you will find in the according tutorial – http://www.gimpusers.com/tutorials/sparkle-on-objects)
Important: Reset the options of the brush dynamics before adding the sparkle. Use white as foreground color.
There are of course many color variations possible. The whole disco ball comes to life when using a nice background. Also some rotation of the sphere is a good ide to get more dynamic into the scene.
I hope you enjoyed the small tutorial! I’ve got the inspiration to this tutorial from http://mosquitosplace.com/2008/10/disco-ball-tutorial/ which was a motivation for a kiwi partyflyer.
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