hi,
I am using an osg code which plots a few points in 3D space. This
works fine and I am able to move around the scene with the mouse. But
when I add the line "viewer.addEventHandler(new
KeyboardEventHandler());" to the code and run it, I cant move the
scene/objects (generally we can move the scene by clicking and
dragging with the mouse) . It just stays still even if I drag the
mouse around. I am pasting the code I am using, below:
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
#include<iostream>
#include<vector>
#include<string>
#include<fstream>
#include"global.h"
#include"drawables.cpp"
#include"ransac.cpp"
using namespace std;
class KeyboardEventHandler : public osgGA::GUIEventHandler
{
public:
virtual bool handle(const osgGA::GUIEventAdapter&
ea,osgGA::GUIActionAdapter&)
{
}
};
osg::Camera* createHUD()
{
osg::Camera* camera = new osg::Camera;
camera->setProjectionMatrix(osg::Matrix::ortho2D(0,2560,0,2048));
camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
camera->setViewMatrix(osg::Matrix::identity());
camera->setClearMask(GL_DEPTH_BUFFER_BIT);
camera->setRenderOrder(osg::Camera::POST_RENDER);
camera->setAllowEventFocus(false);
return camera;
}
int main(int argc,char* argv[])
{
osgViewer::Viewer viewer;
viewer.setCameraManipulator(new osgGA::TrackballManipulator);
viewer.addEventHandler(new osgViewer::StatsHandler);
viewer.addEventHandler(new KeyboardEventHandler());
//this is the line giving problems
osg::Group* root=new osg::Group();
osg::Geode* geode=new osg::Geode();
ifstream infile("data1",ios::in);
vector<osg::Vec3> points;
double temp1,temp2,temp3;
//for(int i=0;i<540000;i++)
//infile >> temp1 >> temp2 >> temp3;
for(int i=0;i<180;i++)
{
if(infile >> temp1 >> temp2 >> temp3)
points.push_back(osg::Vec3(temp1,temp2,temp3));
}
osg::Plane plane(osg::Vec3(0,0,1.83),points[90],points[45]);
for(int i=0;i<180;i++)
{
if(i==180)
// cout <<
"==============================================================" <<
endl;
double dist=plane.distance(points[i]);
if(i<180)
root->addChild(drawBox(points[i],0.2,osg::Vec4(1,1,1,1)));
//cout << dist<< endl;
}
osg::Plane plane1(points[60],points[90],points[45]);
osg::Vec3 norm=plane1.getNormal();
norm.normalize();
osg::Vec3Array* vertices=new osg::Vec3Array();
vertices->push_back(osg::Vec3(100,-100,0)^norm);
vertices->push_back(osg::Vec3(100,100,0)^norm);
vertices->push_back(osg::Vec3(-100,100,0)^norm);
vertices->push_back(osg::Vec3(-100,-100,0)^norm);
// geode->addDrawable(createPolygon(vertices));
root->addChild(geode);
viewer.setSceneData(root);
viewer.run();
}
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