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
------------------
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http://forum.openscenegraph.org/viewtopic.php?p=43385#43385
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