Classification: UNCLASSIFIED Caveats: NONE I thought that this code in drawLines sets the color.
The strange thing is that the first triangle that I draw is the wrong color and the second triangle is the correct color and they are both drawn from the same geode. i'm totally confused. > // pass the created vertex array to the points geometry object. > linesGeom->setVertexArray(vertices); > > // set the colors as before, plus using the above > osg::Vec4Array* colors = new osg::Vec4Array; > colors->push_back(osg::Vec4( colorVec[colorIndex][0], > colorVec[colorIndex][1], > colorVec[colorIndex][2], colorVec[colorIndex][3])); > > linesGeom->setColorArray(colors); > linesGeom->setColorBinding(osg::Geometry::BIND_OVERALL); > > -----Original Message----- > From: [email protected] [mailto:osg-users- > [email protected]] On Behalf Of Tomlinson, Gordon > Sent: Thursday, March 12, 2009 11:11 AM > To: OpenSceneGraph Users > Subject: Re: [osg-users] second newbie question reiterated > withdrawLine(UNCLASSIFIED) > > You do not show how you set the color and material on the triangles > If this is not specified then you will pickup what ever the last color > and/or material that was used by Opengl > > > Gordon > Product Manager 3d > __________________________________________________________ > Gordon Tomlinson > Email : gtomlinson @ overwatch.textron.com > __________________________________________________________ > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of > Konkle, > Daniel T AMRDEC/Dynetics > Sent: Thursday, March 12, 2009 12:04 PM > To: OpenSceneGraph Users > Subject: [osg-users] second newbie question reiterated with > drawLine(UNCLASSIFIED) > > Classification: UNCLASSIFIED > Caveats: NONE > > > Any insight would be welcome. > > So I'm drawing several triangles on my scene. > > here is the code that draws the first 2. > > I'm reusing the first same geode. > > The strange thing is that the 'right triangle' is a different color > (black) > than the 'left triangle' (light green) > > I'm actually drawing 2 others and they are black too. > > I need them to be green. > > Can anyone tell me what I'm doing wrong? It makes no sense to me. > > Danny > > > osg::Vec3Array* tri = new osg::Vec3Array; > tri->push_back(osg::Vec3(0.0f, -0.1f, depth)); > tri->push_back(osg::Vec3(0.1f, 0.0f, depth)); > tri->push_back(osg::Vec3(0.0f, 0.1f, depth)); > > osg::ref_ptr<osg::Geode> triangle = new osg::Geode(); > triangle->addDrawable( drawLines( tri, 0 ) ); > > // right triangle > { > > 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 ); > > camera->addChild(translate.get()); > translate->addChild( rotate.get() ); > rotate->addChild( triangle.get() );; > } > > // left triangle > { > osg::Matrix m; > osg::ref_ptr<osg::MatrixTransform> mt = new > osg::MatrixTransform; > m.makeTranslate( -hud_aspect, 0.0f, 0.0f ); > mt->setMatrix( m ); > camera->addChild(mt.get()); > mt->addChild( triangle.get() );. > } > > > // create LINES > osg::Geometry * drawLines( osg::Vec3Array * vertices, int colorIndex ) > { > // create Geometry object to store all the vertices and lines > primitive. > osg::Geometry* linesGeom = new osg::Geometry(); > > // pass the created vertex array to the points geometry object. > linesGeom->setVertexArray(vertices); > > // set the colors as before, plus using the above > osg::Vec4Array* colors = new osg::Vec4Array; > colors->push_back(osg::Vec4( colorVec[colorIndex][0], > colorVec[colorIndex][1], > colorVec[colorIndex][2], colorVec[colorIndex][3])); > > linesGeom->setColorArray(colors); > linesGeom->setColorBinding(osg::Geometry::BIND_OVERALL); > > > // set the normal in the same way color. > osg::Vec3Array* normals = new osg::Vec3Array; > normals->push_back(osg::Vec3(0.0f,-1.0f,0.0f)); > linesGeom->setNormalArray(normals); > linesGeom->setNormalBinding(osg::Geometry::BIND_OVERALL); > > > // This time we simply use primitive, and hardwire the number of > coords to use > // since we know up front, > //linesGeom->addPrimitiveSet(new > osg::DrawArrays(osg::PrimitiveSet::LINES,0,vertices->size())); > linesGeom->addPrimitiveSet(new > osg::DrawArrays(osg::PrimitiveSet::LINE_LOOP,0,vertices->size())); > osg::StateSet* stateset = linesGeom->getOrCreateStateSet(); > stateset->setMode(GL_BLEND,osg::StateAttribute::ON); > stateset->setAttribute(new > osg::PolygonOffset(1.0f,1.0f),osg::StateAttribute::ON); > stateset->setRenderingHint(osg::StateSet::TRANSPARENT_BIN); > stateset->setRenderBinDetails(11, "RenderBin"); > > // add the points geometry to the geode. > return linesGeom; > } > > > Classification: UNCLASSIFIED > Caveats: NONE > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users- > openscenegraph.or > g > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users- > openscenegraph.org Classification: UNCLASSIFIED Caveats: NONE _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
