INCLAN Graphics: plot arc: Difference between revisions
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Draws a circle, an ellipse, or part of a circle or ellipse with the | Draws a circle, an ellipse, or part of a circle or ellipse with the | ||
center at (x,y), and half axes a and b. If b is omitted, a circle with | center at (''x'',''y''), and half axes ''a'' and ''b''. If ''b'' is omitted, a circle with | ||
radius a (measured in the x-direction) is drawn. Optionally, only the | radius a (measured in the ''x''-direction) is drawn. Optionally, only the | ||
part of the ellipse starting and ending with phase angles f1 and f2, | part of the ellipse starting and ending with phase angles ''f1'' and ''f2'', | ||
respectively, is drawn. The phase angle is 0 on the positive x-axis | respectively, is drawn. The phase angle is 0 on the positive ''x''-axis | ||
and increases counterclockwise. This command can also be used in list | and increases counterclockwise. This command can also be used in list | ||
mode, where the parameters are vector expressions. | mode, where the parameters are vector expressions. | ||
Revision as of 18:23, 11 August 2009
Synopsis
plot arc x y a [b [f1 f2]]
Description =
Draws a circle, an ellipse, or part of a circle or ellipse with the center at (x,y), and half axes a and b. If b is omitted, a circle with radius a (measured in the x-direction) is drawn. Optionally, only the part of the ellipse starting and ending with phase angles f1 and f2, respectively, is drawn. The phase angle is 0 on the positive x-axis and increases counterclockwise. This command can also be used in list mode, where the parameters are vector expressions.