HI Qasim, If you want a simple way of drawing a sphere then you can use osg::ShapeDrawable to draw a shape. The osgshadpe example is a good guide to doing things this way. ShapeDrawable is not the most efficient way to draw an geometry, but its a least easy.
The way you are using osg::Geometry is inappropriate in this case as setShape only sets the primitive shape reoresentation that collision detection might use, it doesn't build any geometry for you. You can use osg::Geometry and create your own vertex arrays, normals and primitive set to represent the sphere, and this will result in the most OpenGL efficient path, but it requires more code. See the osggeometry example for a guide to creating your own geometry. Loading a sphere from a file is equivilant to creating your own geometry - only the plugin will build the geometry vertices and primitives for you. On 1/18/07, Qasim Mumtaz <[EMAIL PROTECTED]> wrote:
I am trying to draw a sphere using following code, but this isnt wokring. Also please advise if its more efficent to draw a node like this sphere in scenegraph or read file e.g sphere.3DS ? Any help will be appreciated. osg::ref_ptr<osg::Group> sphereNode = new osg::Group(); osg::ref_ptr<osg::Geode> sphereGeode = new osg::Geode(); osg::ref_ptr<osg::Geometry> sphereGeometry = new osg::Geometry(); osg::ref_ptr<osg::Sphere> lightSphere = new osg::Sphere(osg::Vec3(0,0,0),200.0f); sphereGeometry->setShape(lightSphere.get()); sphereGeode->addDrawable(sphereGeometry.get()); osg::Vec4Array* t_color = new osg::Vec4Array; t_color->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f)); sphereGeometry->setColorArray(t_color); sphereGeometry->setColorBinding(osg::Geometry::BIND_OVERALL); osg::StateSet* state = sphereGeode->getOrCreateStateSet(); state->setMode(GL_LIGHTING,osg::StateAttribute::ON); //state->setMode(GL_DEPTH_TEST,osg::StateAttribute::OFF); sphereNode->addChild(sphereGeode.get()); ________________________________ Never Miss an Email Stay connected with Yahoo! Mail on your mobile. Get started! _______________________________________________ osg-users mailing list osg-users@openscenegraph.net http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
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