do search for "Y up to Z up" in the archive.

-Nick


On Wed, Jul 21, 2010 at 3:53 AM, Guy Volckaert <[email protected]>wrote:

> While analyzing the TXNode class, I noticed that it makes a suttle
> assumption that the coordinate system is Z up. Almost everyhere else in OSG
> it make no such assumption (or it provides a CoordinateFrame class to
> convert from one coordinate system to another such as from Z up to Y up).
>
> Here is a small code snipit of TxpNode:
>
>
> Code:
>
> void TXPNode::updateEye(osg::NodeVisitor& nv)
> {
> [...]
>    //---- This code assumes Z up.
>    trpg2dPoint loc;
>    loc.x = nv.getEyePoint().x() - _originX;
>    loc.y = nv.getEyePoint().y() - _originY;
> [...]
> }
>
>
>
>
> Is there an easy to make this work with other coordinate systems (like Y
> up).
>
> Cheers,
> Guy
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=30152#30152
>
>
>
>
>
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>
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