Hi, Craig
Does your model have texture coordinates for tex unit 0 assigned?
If not - you should generate them with texgen or use shaders to map texture
correctly.
Cheers
13.10.2011, 13:23, "Craig Fletcher" <c...@hw.ac.uk>:
> Hi,
>
> I would like to render a texture onto an .osg model that I have read in. My
> code works for a primitive sphere but not the model, instead of the texture
> the model colour is changed to a darker grey. Could anyone tell me what I am
> doing wrong ?
>
> Basically i load the model which is ok I then create a geode pointer which
> points to the model geode and then i set the stateset of the geode to that
> containing the texture information.
>
> I have read something about setting texture coordinates ? i don't do anything
> like this could this be my problem.
>
> Code below
>
> osg::Group *Root;
> osg::Geode *mySphereGeode;
> osg::ref_ptr<osg::Node> tModel;
> osg::Geode* modelGeode;
>
> void createSphere()
> {
> const double sphereRadius = 0.5;
> osg::Sphere* mySphere = new
> osg::Sphere(osg::Vec3d(0,0,0),sphereRadius);
> osg::ShapeDrawable* mySphereDrawable = new
> osg::ShapeDrawable(mySphere);
> mySphereGeode = new osg::Geode();
> mySphereGeode->addDrawable(mySphereDrawable);
> mySphereGeode->setName("mySphere");
> osg::PositionAttitudeTransform * mySpherePAT = new
> osg::PositionAttitudeTransform();
> mySpherePAT->addChild(mySphereGeode);
> Root->addChild(mySpherePAT);
> }
>
> void setTexture(osg::Geode *myGeode)
> {
> osg::Texture2D* texture = new osg::Texture2D;
>
> texture->setDataVariance(osg::Object::DYNAMIC);
> texture->setFilter(osg::Texture::MIN_FILTER,
> osg::Texture::LINEAR_MIPMAP_LINEAR);
> texture->setFilter(osg::Texture::MAG_FILTER, osg::Texture::LINEAR);
> texture->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP);
> texture->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP);
>
> osg::Image* img = osgDB::readImageFile("drillText.tga");
> if (!img)
> {
> //std::cout << " couldn't find texture, quiting." <<
> std::endl;
> //return -1;
> }
>
> texture->setImage(img);
>
> osg::StateSet* stateOne = new osg::StateSet();
>
> // Assign texture unit 0 of our new StateSet to the texture
> // we just created and enable the texture.
> stateOne->setTextureAttributeAndModes(0,texture,osg::StateAttribute::ON);
>
> //myGeode->setStateSet(stateOne);
> myGeode->setStateSet(stateOne);
>
> }
>
> void loadModel(char* name)
> {
> osg::ref_ptr<osg::Node> tModel = osgDB::readNodeFile(name);
> osg::PositionAttitudeTransform* modelPAT = new
> osg::PositionAttitudeTransform();
> tModel->setName(name);
>
> if(!tModel)
> {
> //throw std::string("Error! Could not load node file.");
> //return 0;
>
> }
>
> tModel->setDataVariance( osg::Object::STATIC );
>
> modelPAT->setPosition(osg::Vec3d(0, 0, 0));
> modelPAT->addChild(tModel.get());
>
> Root->addChild(modelPAT);
>
> GeodeFinder myGeodeFinda;
> Root->accept(myGeodeFinda);
> modelGeode = myGeodeFinda.getGeode(name);
>
> }
>
> void main(void)
> {
> Root = new osg::Group();
>
> //createSphere();
> //setTexture(mySphereGeode);
>
> loadModel("cyl60x10.osg");
> setTexture(modelGeode);
>
> osgViewer::Viewer viewer;
> viewer.setUpViewInWindow( 50, 50, 768, 768 );
> viewer.setSceneData(Root);
>
> viewer.run();
>
> }
>
> Any pointers would be greatly appreciated
>
> Thank you!
>
> Cheers,
> Craig
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=43385#43385
>
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