Hi,
I'm trying to change my OGL code to OSG but I'm having really problems with
the transformations... I have 174 data files that each contains a cloud of
points, a vector3 with the translartion, and the matrix of rotation of each
cloud. So in OGL, i just do:
{
LoadFile( x++) //Loads a diferent file in each
iteration
glPushMatrix();
glTranslate( x , y , z )
glMultMatrixf( rotation );
glBegin( GL_POINTS )
........
glEnd();
glPopMatrix();
}
So in OSG first of all I try to do it with a <osg::Switch> but seems that
this node accumulate the transformations... is that right?? So what I
finally do is to attach a diferent node in each iteration and detach the
previous one. But the real problem is that OSG is not doing the same as OGL.
I do this for each node:
{
osg::Matrixf rotation;
osg::Matrixf translation;
osg::Matrixf result;
rotation.set( gridOrientation.get( 0 , 0 ) , gridOrientation.get( 0 , 1
) , gridOrientation.get( 0 , 2 ) , 0.0,
gridOrientation.get( 1 , 0 ) , gridOrientation.get( 1
, 1 ) , gridOrientation.get( 1 , 2 ) , 0.0,
gridOrientation.get( 2 , 0 ) , gridOrientation.get( 2
, 1 ) , gridOrientation.get( 2 , 2 ) , 0.0,
0.0f , 0.0f , 0.0f , 1.0f );
translation.setTrans( x , y , z );
result = rotation * translation;
osg::MatrixTransform * transformation = new osg::MatrixTransform();
transformation->addChild( gNode );
transformation->setMatrix( result );
}
rotationOGL.makeRotate( osg::DegreesToRadians(90.0) , osg::Vec3d( 0.0 , 1.0
, 0.0 ));
transformationOGL->setMatrix(rotationOGL);
transformationOGL->addChild(m_root);
m_vViewer.setSceneData( transformationOGL );
m_root->addChild( transformation );
.....
What I'm doing wrong? I've tried a lot of combinations of creating rotation
, translation, result, but no one is the correct!! I think I'm doing
something wrong I cannot apreciate.
Thanks!!
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