Are you rendering with lighting enabled or disabled? I notice that along with setting the color array, you are setting a normal array in your code below. Normally (no pun intended) you supply a normal array if lighting is enabled...
-Shayne -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Konkle, Daniel T AMRDEC/Dynetics Sent: Thursday, March 12, 2009 10:40 AM To: OpenSceneGraph Users Subject: Re: [osg-users] second newbie question reiterated withdrawLi(UNCLASSIFIED) Classification: UNCLASSIFIED Caveats: NONE If i remove the matrix transform that performs the rotation for the the right triangle, i get the correct color on my triangle. i don't understand why. help. > -----Original Message----- > From: [email protected] [mailto:osg-users- > [email protected]] On Behalf Of Konkle, Daniel T > AMRDEC/Dynetics > Sent: Thursday, March 12, 2009 11:35 AM > To: OpenSceneGraph Users > Subject: Re: [osg-users] second newbie question reiterated > withdrawLin(UNCLASSIFIED) > > 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 Classification: UNCLASSIFIED Caveats: NONE _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
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