Tutorial: A colored swirl of light
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1
Create a new Image. 640×480. You can take any size. Apply Filter / Render / Clouds / Plasma.
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2
Now do Filters / Distorts / Whirl and Pinch…
Whirl angle: 130
Pinch amount: 1
Radius: 1It should look like that now.
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3
Create a new transparent layer.
Use the Blend tool, use white as foreground color and black as background color. The fastest way to do this pressing D to reset colors and then X to swap the colors.
Shape: Radial
Move the gradient from the center of the image to one of the four corners.
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4
Duplicate the layer. The original one name “fade black”. For this set the layer mode to “Multiply”.
The duplicate, which should be at the top, name “light”.
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5
Click the light layer.
- Colors / Brightness & Contrast, use values -65 / +45
Now apply Whirl and Pinch again. The values should be still saved from step 2, if not enter the same values. Only one value has to be changed: Pich from 1 to 0.8.
Apply the filter.
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6
Set the layer mode for the layer to Dodge. Duplicate the light layer to enhance the effect.
Activate the background-layer. Filter / Blur / Selective Gaussian Blur.
Radius: 50
Max. Delta: 70 -
7
If you want a single color use Colors / Desaturate, then Colors / Colorize or Colors / Color balance like me if you want an icy version:
Shadows -30 / -30 / +30
Mids: -30 / +10 / 0
Highlights: 0 / 0 / 30Have fun.
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8
Here is just an example i played with: a splash screen for gimp 2.4 ;)
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