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Thread: what is a polygon?

  1. Nov 6th, 2001, 06:37 PM #1
    JafferAB
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    what is a polygon?

    hehe, someone must know, someone i know thinks its faces, and it ihnk its triangles!
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  2. Nov 6th, 2001, 07:04 PM #2
    mlewis
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    OK no offense but I busted a seam laughing over this one. Remember your basic highschool math:

    Polygon: a closed curve with straight sides

    Translation: a bunch of little lines that all touch each other
    Ex: squares, triangles, pentagons, and anything else that doesn't have holes.
    M. Lewis
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  3. Nov 6th, 2001, 07:07 PM #3
    Zaei
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    A curve doesnt, by definition, have straight edges =).

    Any 2 dimensional figure with 3 or more straight edges is a polygon. When moving into 3 dimensions, the figure must be coplanar.

    Z.
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  4. Nov 6th, 2001, 07:31 PM #4
    mlewis
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    *AHEM*

    First, a curve CAN be a straight segment; ever take calculus? Or algebra II? or geometry? or 1st grade math? (j/k on the last one)

    Second, it MUST BE CLOSED. All segments must contact exactly two others on their endpoints. Crossing lines and lines that don't touch disqualify a curve from being a polygon.
    M. Lewis
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  6. Nov 6th, 2001, 07:57 PM #5
    Zaei
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    My bad. No, ive never taken Calculus =(, and didnt learn a thing in Algebra II (knew most every bit of it already...). I bow to your superior knowledge =).

    Z.
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  7. Nov 7th, 2001, 07:51 AM #6
    Fox
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    *cough* ...

    Since we're in a game programming forum here the definition of a polygon would be:

    A class containing at least:
    - 3 corner points (or links to them) that are stored in a certain direction (cw or ccw)
    - Can also support a color
    - And/or several maps (like a texture)
    - Other Properties, depending on how you need it (ie. if this polygon is collidable, transparent, etc.)
    VB game development website
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  8. Nov 7th, 2001, 07:57 AM #7
    JafferAB
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    <pre>
    <html>
    <h1>hi
    </html>

    <font color=#008000>'Code improved by </font><a href="http://fox.acky.net/downloads/vbtool.zip"><font color=#000000>v</font><font color=#100000>B</font><font color=#200000>u</font><font color=#300000>l</font><font color=#400000>l</font><font color=#500000>e</font><font color=#600000>t</font><font color=#700000>i</font><font color=#800000>n Tool 2.0</font></a>
    </pre>

    h0h0h0, just trying that out, i dunno what the hell it does though, certainly didnt improve that code!

    thanx fo rthe polygon help
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