Hi Nicolas Your 3 last plan have vertices order for a QUAD and not for TRIANGLE_STRIP, except this, i see you 6 planes in my example (attached) based on your code.
HTH David 2012/3/15 Nico DeLarge <[email protected]> > Hi folks, > > I have a strange problem: I want to draw a cube out of 6 PrimitiveSets > containing Triangle Strips. Unfortunately, only the one PrimitiveSet out of > the first 4 vertices is displayed. > > It does not matter, if I set a different starting index than 0 in the > DrawArrays (seems to be ignored), only the first 4 vertices are used. > > If I switch the order of the push_back instruction e.g. for the back and > the top plane (so that the top plane vertices are at the beginning of the > array), then only the top plane will be displayed. > > If I set the start index in the first DrawArrays e.g. to 4 and comment out > all other PrimitiveSets, still the back plane is displayed, not the top > plane as expected. > > Does anyone know what is wrong with my code? Or any other suggestions? > > > > Code: > > double f64HalfCarLength = 2.0; > double f64HalfCarWidth = 1.0; > double f64CarHeight = 1.5; > > m_pCarModelBoxGeode = new osg::Geode(); > m_pCarModelTrafo->addChild(m_pCarModelBoxGeode); > > m_pCarModelBoxDrawable = new osg::Geometry(); > m_pCarModelBoxGeode->addDrawable(m_pCarModelBoxDrawable); > m_pCarModelBoxDrawable->setUseDisplayList(true); > > //Set Vertices > m_pCarModelBoxVertices = new osg::Vec3Array(); > m_pCarModelBoxVertices->reserve(24); > m_pCarModelBoxDrawable->setVertexArray(m_pCarModelBoxVertices); > > //Back plane of the car > > m_pCarModelBoxVertices->push_back(osg::Vec3(-f64HalfCarLength,-f64HalfCarWidth,0.0)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(-f64HalfCarLength,-f64HalfCarWidth,f64CarHeight)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(-f64HalfCarLength,f64HalfCarWidth,0.0)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(-f64HalfCarLength,f64HalfCarWidth,f64CarHeight)); > > > > //Top plane of the car > > m_pCarModelBoxVertices->push_back(osg::Vec3(-f64HalfCarLength,-f64HalfCarWidth,f64CarHeight)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(f64HalfCarLength,-f64HalfCarWidth,f64CarHeight)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(-f64HalfCarLength,f64HalfCarWidth,f64CarHeight)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(f64HalfCarLength,f64HalfCarWidth,f64CarHeight)); > > > > //Front plane of the car > > m_pCarModelBoxVertices->push_back(osg::Vec3(f64HalfCarLength,f64HalfCarWidth,f64CarHeight)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(f64HalfCarLength,-f64HalfCarWidth,f64CarHeight)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(f64HalfCarLength,f64HalfCarWidth,0.0)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(f64HalfCarLength,-f64HalfCarWidth,0.0)); > > > //Right plane of the car > > m_pCarModelBoxVertices->push_back(osg::Vec3(f64HalfCarLength,-f64HalfCarWidth,f64CarHeight)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(-f64HalfCarLength,-f64HalfCarWidth,f64CarHeight)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(-f64HalfCarLength,-f64HalfCarWidth,0.0)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(f64HalfCarLength,-f64HalfCarWidth,0.0)); > > > //Bottom plane of the car > > m_pCarModelBoxVertices->push_back(osg::Vec3(f64HalfCarLength,+f64HalfCarWidth,0.0)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(f64HalfCarLength,-f64HalfCarWidth,0.0)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(-f64HalfCarLength,-f64HalfCarWidth,0.0)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(-f64HalfCarLength,+f64HalfCarWidth,0.0)); > > > //Left plane of the car > > m_pCarModelBoxVertices->push_back(osg::Vec3(f64HalfCarLength,f64HalfCarWidth,f64CarHeight)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(f64HalfCarLength,f64HalfCarWidth,0.0)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(-f64HalfCarLength,f64HalfCarWidth,0.0)); > > m_pCarModelBoxVertices->push_back(osg::Vec3(-f64HalfCarLength,f64HalfCarWidth,f64CarHeight)); > > m_pCarModelBoxDrawable->addPrimitiveSet(new > osg::DrawArrays(osg::PrimitiveSet::TRIANGLE_STRIP,0,4)); > m_pCarModelBoxDrawable->addPrimitiveSet(new > osg::DrawArrays(osg::PrimitiveSet::TRIANGLE_STRIP,4,4)); > m_pCarModelBoxDrawable->addPrimitiveSet(new > osg::DrawArrays(osg::PrimitiveSet::TRIANGLE_STRIP,8,4)); > m_pCarModelBoxDrawable->addPrimitiveSet(new > osg::DrawArrays(osg::PrimitiveSet::TRIANGLE_STRIP,12,4)); > m_pCarModelBoxDrawable->addPrimitiveSet(new > osg::DrawArrays(osg::PrimitiveSet::TRIANGLE_STRIP,16,4)); > m_pCarModelBoxDrawable->addPrimitiveSet(new > osg::DrawArrays(osg::PrimitiveSet::TRIANGLE_STRIP,20,4)); > > > //Set plane normals > m_pCarModelBoxNormals = new osg::Vec3Array(); > m_pCarModelBoxNormals->reserve(6); > m_pCarModelBoxDrawable->setNormalArray(m_pCarModelBoxNormals); > > m_pCarModelBoxDrawable->setNormalBinding(osg::Geometry::BIND_PER_PRIMITIVE_SET); > > m_pCarModelBoxNormals->push_back(osg::Vec3(-1.0,0.0,0.0)); //back > m_pCarModelBoxNormals->push_back(osg::Vec3(0.0,0.0,1.0)); //top > m_pCarModelBoxNormals->push_back(osg::Vec3(1.0,0.0,0.0)); //front > m_pCarModelBoxNormals->push_back(osg::Vec3(0.0,-1.0,0.0)); //right > m_pCarModelBoxNormals->push_back(osg::Vec3(0.0,0.0,-1.0)); //bottom > m_pCarModelBoxNormals->push_back(osg::Vec3(0.0,1.0,0.0)); //left > > > //Set box color > m_pCarModelBoxColor = new osg::Vec4Array(); > m_pCarModelBoxDrawable->setColorArray(m_pCarModelBoxColor); > m_pCarModelBoxDrawable->setColorBinding(osg::Geometry::BIND_OVERALL); > > m_pCarModelBoxColor->push_back(osg::Vec4(0.5,0.5,0.5,1.0)); > > > > > > Thank you! > > Cheers, > Nicolas > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=46292#46292 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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