I have some objects in my scene created like so:
static osg::ref_ptr<osgDB::ReaderWriter::Options> options = new
osgDB::ReaderWriter::Options;
options->setObjectCacheHint(osgDB::ReaderWriter::Options::CACHE_ALL);
std::string modFname=getModelFilename();
osg::ref_ptr<osg::Node> node = osgDB::readNodeFile(modFname.c_str(),
options.get());
osg::ref_ptr<osg::PositionAttitudeTransform> trans = new
osg::PositionAttitudeTransform;
trans->addChild(node.get());
myNode = trans.get();
osgRoot->addChild(myNode);
==========================================
I then move my object by setting the position via the
PositionAttituteTransform:
osg::PositionAttitudeTransform* trans = nodes[i];
pos = trans->getPosition();
pos += delta;
trans->setPosition(pos);
I also rotate the object:
osg::PositionAttitudeTransform* trans = nodes[i];
const osg::Quat q = trans->getAttitude();
osg::Quat q2;
osg::Matrixd matrix;
osg::Matrixd result;
q.get(matrix);
osg::Matrixd multiplicand(cos(rad), -sin(rad), 0, 0, sin(rad),
cos(rad), 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
result.mult(matrix, multiplicand);
q2.set(result);
trans->setAttitude(q2);
==========================================================
Later on I want to transform another piece of geometry in the same way
as my node. How do I do this? See trans.????() below.
osg::Vec3d min(11.942,0.839105,-36.1137);
osg::Vec3d max(101.942,40.8391,-18.9462);
osg::PositionAttitudeTransform* trans =
dynamic_cast<osg::PositionAttituteTransform*>(myNode);
osg::Vec3d transformed_min(trans.????(min));
osg::Vec3d transformed_max(trans.????(max));
Thanks,
James
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