FractalCloud is a Photoshop plug-in filter. It creates a greyscale cloud-like effect from input parameters. It ignores the current contents of the selected area.
When you choose the FractalCloud filter, you get a dialog box asking for a seed input, the value for a parameter H, and a percentage for ‘Black Below’. The seed will be used to seed random numbers. The H value determines the smoothness of the cloud — a low value, say 0.005, will give a ‘choppy’ cloud; a high value, such as 1.0, will give a smooth cloud. Filling the percentage sets pixels below the percentage of the value range to black.
FractalCloud uses a lot of memory. It allocates an array of floating point numbers to do its calculations. The number of elements in the array is (biggest side of the selection rounded up to the next power of two +1) squared. If you find you haven’t enough memory, apply it to just a grayscale window and close all other windows. You can also try quitting and restarting Photoshop in case its memory has become fragmented.
Copy the filter to the Photoshop Plug-ins folder to use. I’ve supplied versions for PowerPC (PPC), 680x0 with floating point unit (68K 68881), and 680x0 without floating point unit (68K).
