Hi,
I am trying to get line thickness using osg::LineWidth on a
TexturedQuadGeometry but I cannot get it working.
Does it not work on TexturedGeometry ?
Basically i want to get a border on my textured quad using this.
here is sample in which its reproduced
Image size is 300x200
Code:
osgViewer::Viewer viewer;
osg::setNotifyLevel(osg::NotifySeverity::INFO);
// use a geode with a Box ShapeDrawable
osg::Drawable *box = new osg::ShapeDrawable(new
osg::Box(osg::Vec3(0.0f,0.0f,0.0f),1.0f));
osg::Image *exampleImage = osgDB::readImageFile( "someimage.jpg" );
osg::ref_ptr<osg::Geometry> pictureQuad =
osg::createTexturedQuadGeometry(
osg::Vec3(0.0f, 0.0f,
0.0f),
osg::Vec3(exampleImage->s(), 0.0f, 0.0f),
osg::Vec3(0.0f, 0.0f,
exampleImage->t()),
0.0f,
1.0f,
exampleImage->s(),
exampleImage->t() );
osg::Geode* basicModel = new osg::Geode();
//creating texture and setting up parameters for video frame
osg::ref_ptr<osg::TextureRectangle> myTexRect= new
osg::TextureRectangle(exampleImage);
myTexRect->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR);
myTexRect->setFilter(osg::Texture::MAG_FILTER,osg::Texture::LINEAR);
myTexRect->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);
myTexRect->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP_TO_EDGE);
//apply texture to quad
pictureQuad->getOrCreateStateSet()->setTextureAttributeAndModes(0,
myTexRect.get(), osg::StateAttribute::ON);
osg::LineWidth* linewidth = new osg::LineWidth();
linewidth->setWidth(30.0f);
pictureQuad->getOrCreateStateSet()->setAttributeAndModes(linewidth,osg::StateAttribute::ON);
basicModel->addDrawable( pictureQuad.get() );
// create the "blocky" shader, a simple animation test
osg::StateSet *ss = basicModel->getOrCreateStateSet();
ss->setAttributeAndModes(linewidth,osg::StateAttribute::ON);
ss->setMode( GL_BLEND, osg::StateAttribute::ON);
//Adding blend function to node
osg::BlendFunc *bf = new osg::BlendFunc();
bf->setFunction(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
ss->setAttributeAndModes(bf);
osg::MatrixTransform *trans = new osg::MatrixTransform();
trans->addChild(basicModel);
// run the osg::Viewer using our model
osg::Group *m_osg_root = new osg::Group;
m_osg_root->addChild(trans);
osg::ref_ptr<osg::Node> nodePtr = static_cast<osg::Node*>(m_osg_root);
viewer.setSceneData( nodePtr);
return viewer.run();
Thank you!
Cheers,
Abhishek[/code]
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Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=53624#53624
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