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A circle has just one size, its radius, defined, for example, with r=100. It's possible to fill it with color, with borders of the same (or a different) color and thickness.
The creation of a circle is very simple: just declare it in the .circle instruction, and pass the parameters.
.circle nameofcircle r=100 color=black
This circle has a black border but transparent interior. Optional parameters are:
- fill - fills the circle with border color, or with another color
- line - gives a different thickness to the border
It's also possible to fill the circle, not with a color, but with an image - just pass it as fill nameofimage.
The example, below, creates four circles. They are placed side by side, in a 2x2 array. The circles appear in sequence, taking 2 seconds between them. The image is stolen from Wikipedia, http://commons.wikimedia.org/wiki/File:Amy_lee_in_rock_and_rio_2011.jpg
.flash bbox=600x600 fps=50 background=white .jpeg amylee amy_lee_in_rock_and_rio_2011.jpg .circle bluecircle r=150 color=black .circle redcircle r=150 color=red fill .circle greencircle r=150 color=green fill=yellow line=10 .circle amycircle r=150 color=pink fill=amylee .frame 1 .put bluecircle .frame 201 .put redcircle x=300 y=0 .frame 401 .put greencircle x=0 y=300 .frame 601 .put amycircle x=300 y=300 .stop .end