You can convert polar coordinates to Cartesian x,y coordinates with:
// polar to Cartesian double x = Math.cos( angleInRadians ) * radius; double y = Math.sin( angleInRadians ) * radius; // Cartesian to polar. double radius = Math.sqrt( x * x + y * y ); double angleInRadians = Math.acos( x / radius );If your angles are in degrees, to see how to convert them to radians, see the radians entry. To convert to drawing coordinates you must round to integers and invert the sign of y, since y grows down in Java rather than up as in mathematics.
available on the web at:
optional Replicator mirror
Please email your feedback for publication, letters to the editor, errors, omissions, typos, formatting errors, ambiguities, unclear wording, broken/redirected link reports, suggestions to improve this page or comments to Roedy Green : . If you want your message, your name or email kept confidential, not considered for public posting, please explicitly specify that. Unless you state otherwise, I will treat your message as a letter to the editor that I may or may not publish in the feedback section. After that, it will be too late to retract it. If you disagree with something I said, especially when sending an ad-hominem attack, a rant composed mainly of obscenities or a death threat, please quote the offending passage and cite the web page where you found it, tell me why you think it is wrong, and, if possible, provide some supporting evidence. I can’t very well fix erroneous or ambiguous text if I can’t find it.
Your face IP:[22.214.171.124]
|Feedback||You are visitor number 15,513.|