Classification: UNCLASSIFIED
Caveats: NONE
I'm translating some opengl code to OpenSceneGraph.
I've figured out how to most of the stuff I need except
I'm having trouble getting the rotations and translations to
play nice.
My code example that I need to translate:
glTranslatef(hud_aspect, 0.0f, 0.0f);
glRotatef(180.0f, 0.0f, 0.0f, 1.0f);
glBegin(GL_LINE_LOOP);
glVertex2fv(hud_ctr_ref_tri[0]);
glVertex2fv(hud_ctr_ref_tri[1]);
glVertex2fv(hud_ctr_ref_tri[2]);
I'm able to correctly draw the line loop without the rotation.
When I try to add the rotation it doesn't work.
My code is below.
osg::ref_ptr<osg::Geode> triangle = new osg::Geode();
triangle->addDrawable( drawLines( tri, 0 ) );
osg::ref_ptr<osg::MatrixTransform> translate = new
osg::MatrixTransform;
osg::Matrix tran_mat = osg::Matrix::translate( hud_aspect,
0.0f, 0.0f );
translate->setMatrix( tran_mat );
osg::ref_ptr<osg::MatrixTransform> rotate = new
osg::MatrixTransform;
osg::Matrix rot_mat = osg::Matrix::rotate( M_PI, 0.0f, 0.0f,
1.0f);
rotate->setMatrix( rot_mat );
translate->addChild( rotate.get() );
camera->addChild(translate.get());
translate->addChild( triangle.get() );
I would greatly appreciate any help in figuring out what I'm doing
wrong.
Thanks,
Danny Konkle
Classification: UNCLASSIFIED
Caveats: NONE
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