Reference

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circle

Arguments:

Description:

Draw specified colored circle on selected images.

A radius of 100% stands for sqrt(width^2+height^2).
pattern is an hexadecimal number starting with 0x which can be omitted
even if a color is specified. If a pattern is specified, the circle is
drawn outlined instead of filled.

Default values:

opacity=1, pattern=(undefined) and color1=0.

Example of use:

$ gmic image.jpg repeat 300 circle {u(100)}%,{u(100)}%,{u(30)},0.3,${-rgb} done circle 50%,50%,100,0.7,255
Command: image.jpg repeat 300 circle {u(100)}%,{u(100)}%,{u(30)},0.3,${-rgb} done circle 50%,50%,100,0.7,255