/home/jgoppert/Projects/uvsim/uvsim/src/uvsim/visualization/SimpleViewer.cc

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/*
 * SimpleViewer.cc
 * Copyright (C) James Goppert 2009 <jgoppert@users.sourceforge.net>
 *
 * SimpleViewer.cc is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * SimpleViewer.cc is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "SimpleViewer.h"

namespace uvsim
{

SimpleViewer::SimpleViewer(int priority, float freq, osg::Group *scene, double manipDepth, osg::Vec3d &manipCenter, 
                float frameSize, double fogStart, double fogEnd) :
        RealtimeThread(priority, freq), scene(scene), viewer(new osgViewer::Viewer), frame(new Frame(frameSize)),
        manip(new osgGA::TrackballManipulator) 
{
    manip->setAutoComputeHomePosition(false);
        scene->addChild(frame->root);
    viewer->setSceneData(scene);
    viewer->setCameraManipulator(manip);
        viewer->getCamera()->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR); 
        osg::Fog *fog = new osg::Fog();
    fog->setMode(osg::Fog::LINEAR);
    fog->setStart(fogStart);
    fog->setEnd(fogEnd);
    fog->setFogCoordinateSource(osg::Fog::FRAGMENT_DEPTH);
    fog->setColor(osg::Vec4(0,0,1,1));
    viewer->getCamera()->getOrCreateStateSet()->setAttributeAndModes(fog, osg::StateAttribute::ON);
    viewer->getCamera()->setClearDepth(10000);
        viewer->setThreadSafeReferenceCounting(true);
    manip->setCenter(manipCenter);
    manip->setDistance(manipDepth);
    viewer->setUpViewInWindow(0,0,300,300);
}

SimpleViewer::~SimpleViewer()
{
}

void SimpleViewer::loop()
{
        if (viewer->done()) stop();
        viewer->frame();
        osg::Vec3d eye, center, up;
        viewer->getCamera()->getViewMatrixAsLookAt(eye, center, up);
        frame->root->setPosition(manip->getCenter());

        //output
        //std::cout << "Camera: " << std::endl;
        //std::cout << "eye: " << eye.x() << ", " << eye.y() << ", "
                          //<< eye.z() << std::endl;
        //std::cout << "center: " << center.x() << ", " << center.y() << ", "
                          //<< center.z() << std::endl;
        //std::cout << "up: " << up.x() << ", " << up.y() << ", "
                          //<< up.z() << std::endl;
        //std::cout << "Manipulator: " << std::endl;
        //std::cout << "center: " << manip->getCenter().x() << ", " << manip->getCenter().y() << ", "
                          //<< manip->getCenter().z() << std::endl;
        //std::cout << "distance: " << manip->getDistance()  << std::endl;
}

} // uvsim

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