[osg-users] strange behavior

[ted morris]

hi, I am using 3.4.0 with VisualStudio 2013, Win 8.1/x64, which all built
fine (examples all work as expected).

So, I wrote  a very simple program, which unfortunately renders the cube
offset from the horizontal axis, instead of being centered. The bounding
sphere center = 0,0,0.  If I instead add:

view1.setUpViewInWindow(0, 0, image_width, image_height);

then it renders as expected at the center of the window with the default
node trackball camera manipulator.

 Would anyone have a clue why am I observing this behavior and how to
correct the problem?

#include "stdafx.h"
#include <stdio.h>
#include <stdlib.h>
#include <iostream>

#include <osg/Node>
#include <osg/Group>
#include <osg/Geode>
#include <osg/Geometry>
#include <osgDB/ReadFile>
#include <osgGA/TrackballManipulator>
#include <osg/ShapeDrawable>
#include <osg/MatrixTransform>
#include <osg/StateAttribute>
#include <osg/PositionAttitudeTransform>
#include <osgGA/NodeTrackerManipulator>
#include <osg/LineWidth>
#include <osg/Transform>
#include <osgText/Text>
#include <osgUtil/PolytopeIntersector>
#include <osgViewer/Viewer>
#include <osg/Viewport>
#include <osg/NodeCallback>
#include <osg/Notify>

#include <ctype.h>

int _tmain(int argc, _TCHAR* argv[])
{

float dimx = 2.0, dimy = 2.0, dimz = 2.0;
osg::ref_ptr<osg::Box> cube_primitive(new osg::Box(osg::Vec3f(0, 0, 0),
dimx, dimy, dimz));
osg::ref_ptr<osg::ShapeDrawable> shape(new
osg::ShapeDrawable(cube_primitive.get()));
shape->setColor(osg::Vec4(8.0, 0.2, 0.0, 1.0));
osg::ref_ptr<osg::Geode> shapegeode = new osg::Geode;
shapegeode->addDrawable(shape.get());
osg::Group * SceneNode = new osg::Group;
SceneNode->addChild(shapegeode);

osg::BoundingSphere bsphere = SceneNode->getBound();
osg::Vec3d center = bsphere.center();
printf(" *****bsphere: %f,%f,%f\n", center.x(), center.y(), center.z());

osgViewer::Viewer view1;
view1.setSceneData(SceneNode);

view1.realize();
view1.run();

return 0;
}
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