Re: [osg-submissions] Corrected how billboards are treated in FlattenStaticTransformsDuplicatingSharedSubgraphsVisitor

[Joakim Simonsson]

The original osg file (created without FSTDSS):
 * billboardtest_original.osg

How the behaviour was before my fix:
 * billboardtest_fstdss_incorrect.osg

With my fix:
 * billboardtest_fstdss_corrected.osg

Attached are some example files that illustrates the problem AND the solution. On Mon, 17 Nov 2008 19:39:52 +0100, Joakim Simonsson <[EMAIL PROTECTED]> wrote:

Hi,

When using optimizer option

correctly handled.


Description:

If a (rotated) matrixtransform had a billboard as child, the geometry of
the billboard did get the wrong position and/or rotation.

Fix:

All vertices/normals of a billboard's geometry are now transformed. The
position of the billboard is then subtracted from the vertices of the
geometry.



Files modified:

src\osgUtil\Optimizer.cpp
include\osgUtil\Optimizer

FLATTEN_STATIC_TRANSFORMS_DUPLICATING_SHARED_SUBGRAPHS, billboards are not

--
Joakim Simonsson

billboardtest_fstdss_corrected.osg
Description: Binary data

billboardtest_fstdss_incorrect.osg
Description: Binary data

billboardtest_original.osg
Description: Binary data

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