Beefy Boxes and Bandwidth Generously Provided by pair Networks
more useful options

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
I don't quite get it.. If this isn't a code solicitation, are you looking for a discussion of how the objects might behave, or at clever ways of attacking the problem...

My first thought would be to:

Given Point A(x,y) and Polygon P with vertices V1..Vn
1.) Create Point B(x,y) such that Bx is greater than all x values of the vertices, and By is greater than all y values of the vertices
2.) Check each edge of P (including endpoints, but excluding those with both endpoints on AB) to see if it intersects segment AB, if so $count++. (fairly trivial, left to excercise for the reader.)
3.) for (V1..Vn) {$count-- if V is on AB} as they were double counted in step 2
4.) $inside = $count%2;

I think I could probably golf that in 150 chars or less... ;-)

Or, maybe you were looking for a discussion on your objects...


In reply to Re: Points, Lines. Polygons OO my by blakem
in thread Points, Lines. Polygons OO my by mitd

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?

What's my password?
Create A New User
Domain Nodelet?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others avoiding work at the Monastery: (3)
As of 2023-01-29 22:28 GMT
Find Nodes?
    Voting Booth?

    No recent polls found