source: GTP/trunk/App/Demos/Vis/FriendlyCulling/src/WalkThroughRecorder.cpp @ 3220

#include "WalkThroughRecorder.h"
#include "Camera.h"
#include "Vector3.h"
#include <sstream>

using namespace std;


namespace CHCDemoEngine
{


WalkThroughRecorder::WalkThroughRecorder(const std::string &filename):
mFile(filename.c_str())
{
}


WalkThroughRecorder::~WalkThroughRecorder()
{
        mFile.close();
}


void WalkThroughRecorder::WriteFrame(Camera *cam)
{
        FrameInfo info(cam->GetPosition(), cam->GetDirection());
        mFile << info << endl;
}


WalkThroughPlayer::WalkThroughPlayer(const std::string &filename):
mFrame(0)
{
        ifstream file(filename.c_str());

        if (file.is_open())
        {
                FrameInfo info;
                int i=0;

                std::string token;

                while(std::getline(file, token)) 
                {
                        std::stringstream line(token);

                        line >> info;
                        mFrameInfos.push_back(info);
                }
        }
        else
        {
                cerr << "problem: cannot open file " << filename << endl;
        }

        file.close();
}


bool WalkThroughPlayer::ReadNextFrame(Camera *cam)
{
        if (mFrameInfos.empty())
                return false;

        cam->SetDirection(mFrameInfos[mFrame].mDirection);
        cam->SetPosition(mFrameInfos[mFrame].mPosition);

        mFrame = (mFrame + 1) % (int)mFrameInfos.size();

        return mFrame != 0;
}


}