Tip from Ivan Louette
1 Import image and resize it to the height correspondig to the largest brush width you want to use.
2 Slice it (here I divided it into eight parts) and conserve only the two extremes, then select fill tool and check "single tile".
3 Apply elliptical transparency to each part.
4 Apply a blend to these two shapes (47 steps is good)
5 Convert to editable shapes and ungroup.
6 Create brush, unchecking "tile fills" in fill properties.
Then adjust spacing and pressure sensitivity scaling for each kind of use.
Thousands of applications where high resolution is not required: -applying this brush as a texture to other brushes with the same pressure profile, -creating warping rollover buttons in applying different degrees of pressure sensitivity for each image, ...
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