Hi J-S,
Thanks for the reply. Well what i needed was to provide the setMatrix() method
with a Geometry. i mean to be able to use setMatrix when vertices are
specified. i was just complicating it.
osg::ref_ptr<osg::MatrixTransform> mt = new osg::MatrixTransform;
mt->addChild(pyramidGeode); // pyramidGeode is a Geode pointer.
PS: Could you please tell me what is wrong with this code:
Code:
int main()
{
// graph created above.
osgViewer::Viewer viewer;
// Set the projection matrix.
viewer.getCamera()->setProjectionMatrixAsFrustum(-2, 2,
-2, 2,
2, 1000);
osg::Node* cow = osgDB::readNodeFile( "JoeDirt.flt" );
// Cow node
osg::ref_ptr<osg::MatrixTransform> mt = new osg::MatrixTransform;
mt->addChild(cow);
mt->setDataVariance( osg::Object::DYNAMIC );
osg::ref_ptr<osg::Group> root = new osg::Group;
// add child
root->addChild( mt.get() );
// set the scene data
viewer.setSceneData( root.get() );
// Set the clear color
viewer.getCamera()->setClearColor(
osg::Vec4( 0., 0., 0., 1. ) );
double angle = 0;
while (!viewer.done()) {
// Create the rotation matrix.
osg::Matrix rot1, scale1, trans1;
// Set the matrix for the cow.
rot1.makeRotate( angle += 0.01, osg::Vec3( 1., 0., 0. ) );
trans1.makeTranslate(osg::Vec3(-2, -2, -500));
// rotate the model
mt->setMatrix(rot1 * trans1);
// Draw the next frame.
viewer.frame();
}
return 0;
}
The terrain loads and rotates fine. But when it comes to the horizontal plane(0
degrees), the model vanishes(part of it). What could be the problem?
Thanks,
Mukund
------------------
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http://forum.openscenegraph.org/viewtopic.php?p=36155#36155
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