Subject:
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Re: Detemining Polygon Winding (Was: New Plugin for LDDesignPad)
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Newsgroups:
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lugnet.cad.dev
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Date:
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Wed, 7 Aug 2002 22:28:06 GMT
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Viewed:
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525 times
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In lugnet.cad.dev, Erik Olson writes:
> The simple algorithm:
>
> Project a normal from any vertex of the polygon to some point far beyond the
> object. Count how many polygons this line segment intersects. If odd, the
> normal was pointing in, if even, the normal was pointing out.
Thanks for the info, but it's easier written than applied. It'll take an
entire revamp of my code.
-Orion
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18 Messages in This Thread: ![New Plugin for LDDesignPad -Orion Pobursky (6-Aug-02 to lugnet.cad.dev)](/news/x.gif) ![](/news/46.gif) ![Re: New Plugin for LDDesignPad -Orion Pobursky (6-Aug-02 to lugnet.cad.dev)](/news/x.gif) ![](/news/46.gif) ![Re: New Plugin for LDDesignPad -Orion Pobursky (7-Aug-02 to lugnet.cad.dev)](/news/x.gif) ![](/news/46.gif) ![Re: New Plugin for LDDesignPad -Carsten Schmitz (7-Aug-02 to lugnet.cad.dev)](/news/x.gif) ![](/news/46.gif) ![Detemining Polygon Winding (Was: New Plugin for LDDesignPad) -Orion Pobursky (7-Aug-02 to lugnet.cad.dev)](/news/x.gif) ![](/news/46.gif) ![Re: Detemining Polygon Winding (Was: New Plugin for LDDesignPad) -Erik Olson (7-Aug-02 to lugnet.cad.dev)](/news/x.gif) ![](/news/246.gif) ![Re: Detemining Polygon Winding (Was: New Plugin for LDDesignPad) -Erik Olson (7-Aug-02 to lugnet.cad.dev)](/news/x.gif)
![](/news/x.gif) ![](/news/x.gif) ![](/news/68.gif) ![You are here](/news/here.gif) ![](/news/46.gif) ![Re: Detemining Polygon Winding (Was: New Plugin for LDDesignPad) -Don Heyse (8-Aug-02 to lugnet.cad.dev)](/news/x.gif) ![](/news/246.gif) ![Re: Detemining Polygon Winding (Was: New Plugin for LDDesignPad) -Don Heyse (8-Aug-02 to lugnet.cad.dev)](/news/x.gif)
![](/news/x.gif) ![](/news/x.gif) ![](/news/68.gif) ![Re: Detemining Polygon Winding (Was: New Plugin for LDDesignPad) -Orion Pobursky (8-Aug-02 to lugnet.cad.dev)](/news/x.gif) ![](/news/46.gif) ![Re: Detemining Polygon Winding (Was: New Plugin for LDDesignPad) -Don Heyse (8-Aug-02 to lugnet.cad.dev)](/news/x.gif) ![](/news/246.gif) ![Re: Detemining Polygon Winding (Was: New Plugin for LDDesignPad) -Erik Olson (8-Aug-02 to lugnet.cad.dev)](/news/x.gif) ![](/news/46.gif) ![Re: Detemining Polygon Winding (Was: New Plugin for LDDesignPad) -Don Heyse (8-Aug-02 to lugnet.cad.dev)](/news/x.gif)
![](/news/x.gif) ![](/news/x.gif) ![](/news/68.gif) ![Re: Detemining Polygon Winding (Was: New Plugin for LDDesignPad) -Anders Isaksson (8-Aug-02 to lugnet.cad.dev)](/news/x.gif) ![](/news/46.gif) ![Re: Detemining Polygon Winding (Was: New Plugin for LDDesignPad) -Steve Bliss (8-Aug-02 to lugnet.cad.dev)](/news/x.gif) ![](/news/46.gif) ![Re: Detemining Polygon Winding (Was: New Plugin for LDDesignPad) -Orion Pobursky (8-Aug-02 to lugnet.cad.dev)](/news/x.gif) ![](/news/46.gif) ![Re: Detemining Polygon Winding (Was: New Plugin for LDDesignPad) -Steve Bliss (9-Aug-02 to lugnet.cad.dev)](/news/x.gif)
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