我正在使用VC ++和OSG开发3D环境,我需要一些帮助
我正在使用以下代码为场景充电3D模型
mueble00Node = osgDB::readNodeFile("Model/mueble_desk.3ds");
mueble00Transform = new osg::MatrixTransform;
mueble00Transform->setName("mueble00");
mueble00Transform->setDataVariance(osg::Object::STATIC);
mueble00Transform->addChild(mueble00Node);
sceneRoot->addChild(mueble00Transform);
我尝试过一些线来旋转3D模型,但没有结果
有人可以向我解释如何在自己的轴上旋转模型吗?
答案 0 :(得分:3)
使用MatrixTransform::setMatrix()
更改子节点的方向。
MatrixTransform* transform = new osg::MatrixTransform;
const double angle = 0.8;
const Vec3d axis(0, 0, 1);
transform->setMatrix(Matrix::rotate(angle, axis));
下面是一个完整的程序,可以加载和显示添加和不添加转换的3D对象。
#include <string>
#include <osg/Object>
#include <osg/Node>
#include <osg/Transform>
#include <osg/Matrix>
#include <osg/MatrixTransform>
#include <osgDB/ReadFile>
#include <osgViewer/Viewer>
#include <osgGA/TrackballManipulator>
using namespace osg;
int main(int argc, char** argv)
{
if (argc != 2) {
std::cerr << "Usage: " << argv[0] << "<file>\n";
exit(1);
}
const std::string file = argv[1];
// Load a node.
Node* node = osgDB::readNodeFile(file);
if (!node) {
std::cerr << "Can't load node from file '" << file << "'\n";
exit(1);
}
// Set a transform for the node.
MatrixTransform* transform = new osg::MatrixTransform;
const double angle = 0.8;
const Vec3d axis(0, 0, 1);
transform->setMatrix(Matrix::rotate(angle, axis));
transform->setName(file);
transform->addChild(node);
// Add the node with and without the transform.
Group* scene = new Group();
scene->addChild(transform);
scene->addChild(node);
// Start a scene graph viewer.
osgViewer::Viewer viewer;
viewer.setSceneData(scene);
viewer.setCameraManipulator(new osgGA::TrackballManipulator());
viewer.realize();
while (!viewer.done()) viewer.frame();
}
答案 1 :(得分:1)
你想要使用quat
http://www.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a00568.html
它有许多可用于旋转的功能。