Hi guys,
I am so new to osg and I'm totally stucked on this problem.
Situation - Having a character in a space. I want to point with character's
hand to some object ( just ShapeDrawable or something like that )..
Character is called Skeleton ( derived from osg::Group )
What I have:
Code:
while ( !viewer.done() )
{
{
osg::Vec3 from = skeleton.getHand(0)->getFrom(); //start vector
from shoulder
osg::Vec3 to = skeleton.getHand(0)->getTo(); // end vector from hand
osg::Vec3 diff = to - from; // vector to make start to end longer
diff = diff * 5;
osg::ref_ptr<osgUtil::LineSegmentIntersector> ins = new
osgUtil::LineSegmentIntersector(osgUtil::Intersector::PROJECTION, from , to +
diff );
osgUtil::IntersectionVisitor visitor( ins.get()) ;
viewer.getCamera()->accept( visitor );
if ( ins->containsIntersections() )
{
osgUtil::LineSegmentIntersector::Intersection result = *(
ins->getIntersections().begin());
(result.drawable.get())->setShape( new osg::Box );
}
}
viewer.frame();
}
}
To be honest I dont really understand what is going on there with all these
functions. I found some examples on google, so I basically just put them
together.
Output is like :
Warning:: Picked up error in TriangleIntersect
(-1.60915e-07 2.54861e-08 1, 0.154508 -0.0244714 0.987688, -1.62921e-07 0
1)
(-nan, -nan, -nan)
What I would like to achieve is:
Having vector which starts at character's shoulder and ends in his hands, with
that vector he would point to some object in a space. If he points at something
( just some ShapeDrawable Box ), I would like to have a pointer to that object
to change its parameters ( color etc.)
Is this even good attitude to achieve this or should I just use something
totally different?
Thank you,
Cheers,
P
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=57762#57762
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