[flattr /]There was a question left open in the last show: How to create a random pattern of particles that follow a gradient in density.
I got three answers. One from Benton – just use a brush with absurdly high jitter. Then I got the help that I asked for from Philippe and finally thought about a way myself. I started with Philippe’s tutorial for making a starfield.
And I recommend the Youtube channel of GimpTricks.
The TOC (by Kevin)
00:25 Welcome to GimpTricks ??
01:02 Welcome to Meet The Gimp
01:40 Benton’s solution to the random particles problem:
02:40 – Set Jitter on the paintbrush tool by typing
03:45 – Adjust the jitter to change the density
05:18 Philippe’s solution:
05:34 – Put a gradient on a quickmask
06:05 – Add noise to the gradient and fill the selection with black
06:47 – Use the threshold tool to adjust the density
07:17 Rolf’s solution:
07:33 – Fill a black layer with HSV Noise
08:48 – Add a new transparent layer in subtract mode
09:03 – Fill the subtraction layer with a gradient
09:50 – Use the threshold tool to control the density
10:45 – Bigger blobs needed
10:50 – Select the blobs using the colour selection tool and fill with blue
11:16 – Stroke the selection and Gaussian blur the blobs
12:45 – Use a picture instead of a gradient
14:51 The End
Sorry, not here up to now.
Meet the GIMP Video Podcast by Rolf Steinort and Philippe Demartin is licensed under a Creative Commons Attribution-Share Alike 3.0 Germany License.
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