bool GraphicSceneClass::RChangeTexture(std::string ObjectName, std::string
filename,unsigned int UnitNumber)
{
//Находим объект
osg::ref_ptr<FindNamedNodeVisitor> fnnv = new
FindNamedNodeVisitor(ObjectName);
root->accept(*fnnv.get());
//Если такой объект есть, ищем текстуру
if (!fnnv->_foundNodes.empty())
{
if (fnnv->_foundNodes.size()>1) std::cout << "Warning: Duplicate
names - " << ObjectName << std::endl;
osg::ref_ptr<FindTextureVisitor> zzz = new
FindTextureVisitor(UnitNumber);
fnnv->_foundNodes.front().get()->accept (*zzz.get());
//Если текстура есть
if (zzz->texture.get())
{
osg::ref_ptr<osg::Image> image = osgDB::readImageFile(filename);
//Отправляем текстуру в видеопамять)
if (image.get())
{
zzz->texture->setImage(image.get());
// dirty the image (increments the modified count) so that
any textures
// using the image can be informed that they need to update.
image->dirty();
}
else
{
std::cout << "NOT find image file for texture";
//delete zzz;
//delete fnnv;
return false;
}
}
else
{
std::cout << "texture NOT find";
}
//Чистим мусор
//delete zzz;
}
else
{
std::cout << "Find objects in Root - FALSE! " << ObjectName <<
std::endl;
//delete fnnv;
return false;
}
//Чистим мусор
//delete fnnv;
return true;
}
class FindTextureVisitor : public osg::NodeVisitor
{
public:
FindTextureVisitor(unsigned int channel=0):
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN)
{
Channel = channel;
setTraversalMask(0xffffffff);
setNodeMaskOverride(0xffffffff);
Sucessful=false;
}
virtual void apply(osg::Node& node);
virtual void apply(osg::MatrixTransform& node);
virtual void apply(osg::Geode& geode);
virtual void apply(osg::Group& group);
unsigned int Channel;
osg::ref_ptr<osg::Texture2D> texture;
osg::ref_ptr<osg::Image> image;
osg::ref_ptr<osg::Material> material;
osg::ref_ptr<osg::StateSet> stateset;
osg::ref_ptr<osg::Drawable> drawable;
private:
bool Sucessful;
};
void FindTextureVisitor::apply(osg::Node& node)
{
traverse(node);
}
void FindTextureVisitor::apply(osg::Geode& geode)
{
for(unsigned int i=0;i<geode.getNumDrawables();i++) //++i
{
if (Sucessful==true) return;
//std::cout << "+";
if (geode.getDrawable(i)->getStateSet())
{
drawable = geode.getDrawable(i);
//текстура
stateset = geode.getDrawable(i)->getStateSet();
//getOrCreateStateSet();
texture =
dynamic_cast<osg::Texture2D*>(geode.getDrawable(i)->getStateSet()->getTextureAttribute(Channel,osg::StateAttribute::TEXTURE));
if (texture.get())
{
image = texture->getImage();
Sucessful=true;
}
else
{
image=NULL;
}
//размер и т.д.
//цвет
//material->setDiffuse(osg::Material::FRONT_AND_BACK, color);
//stateset->setAttributeAndModes(material,
osg::StateAttribute::ON);
material =
dynamic_cast<osg::Material*>(geode.getDrawable(i)->getStateSet()->getAttribute(osg::StateAttribute::MATERIAL));
if (material.get())
{
//std::cout << "@";
}
}
}
}
void FindTextureVisitor::apply(osg::Group& group)
{
traverse(group);
}
void FindTextureVisitor::apply(osg::MatrixTransform& node)
{
apply((osg::Node&)node);
}
2009/2/23 yang zhiyuan <[email protected]>
> Hi:
> If I have a node with four texure in it, what should I do if I want to
> change one texture of these 4 dynamically?(the new texure's size my be
> different)
>
>
> zhi yuan
>
> _______________________________________________
> osg-users mailing list
> [email protected]
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
>
--
Гаммер Максим Дмитриевич
Начальник отдела ИТ НИИ ЭОР
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