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<head><title>segment</title></head>
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<H3>segment</H3>
Segments are complex. They are the portion of an circle between a
chord and the perimeter of the circle. <TT>dy</TT> sets the
radius of the circle. Segments start with the center of the chord
located at <TT>(0,0)</TT> and the chord horizontal. The half-width
of the chord is set by <TT>dx</TT>. The portion of an circle
lying below the chord is then added. The imaginary center of this
circle is located at <TT>(0,-dy)</TT>. The segment is then rotated
by <TT>r</TT> and then translated by <TT>(cx,cy)</TT>.<P>
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