Added osgframerenderer example

2012-11-12 15:26:30 +00:00
parent e9a7b2a6e5
commit 79ae9cd8a3
11 changed files with 886 additions and 0 deletions
--- a/examples/osgframerenderer/CameraPathProperty.cpp
+++ b/examples/osgframerenderer/CameraPathProperty.cpp
@@ -0,0 +1,88 @@
+#include "CameraPathProperty.h"
+
+using namespace gsc;
+
+void CameraPathProperty::update(osgViewer::View* view)
+{
+    osg::Camera* camera = view->getCamera();
+    osg::FrameStamp* fs = view->getFrameStamp();
+
+    if (_animationPath.valid())
+    {
+        osg::AnimationPath::ControlPoint cp;
+        _animationPath->getInterpolatedControlPoint( fs->getSimulationTime(), cp );
+
+        OSG_NOTICE<<"CameraPathProperty "<<fs->getFrameNumber()<<" "<<fs->getSimulationTime()<<std::endl;
+
+        osg::Matrixd matrix;
+        cp.getMatrix( matrix );
+        camera->setViewMatrix( osg::Matrix::inverse(matrix) );
+    }
+}
+
+void CameraPathProperty::loadAnimationPath()
+{
+    _animationPath = new osg::AnimationPath;;
+    //_animationPath->setLoopMode(osg::AnimationPath::LOOP);
+
+    osgDB::ifstream in(_filename.c_str());
+    if (!in)
+    {
+        OSG_WARN << "CameraPathProperty: Cannot open animation path file \"" << _filename << "\".\n";
+        return;
+    }
+
+    _animationPath->read(in);
+}
+
+bool CameraPathProperty::getTimeRange(double& startTime, double& endTime) const
+{
+    if (!_animationPath) return false;
+    
+    const osg::AnimationPath::TimeControlPointMap& tcpm = _animationPath->getTimeControlPointMap();
+    if (tcpm.empty()) return false;
+
+    startTime = tcpm.begin()->first;
+    endTime = tcpm.rbegin()->first;
+    
+    return true;
+}
+
+void CameraPathProperty::resetTimeRange(double startTime, double endTime)
+{
+    if (!_animationPath) return;
+
+    osg::AnimationPath::TimeControlPointMap& tcpm = _animationPath->getTimeControlPointMap();
+    if (tcpm.empty()) return;
+
+    osg::AnimationPath::TimeControlPointMap copy_tcpm = tcpm;
+
+    double offset = tcpm.begin()->first;
+    double originalLength = tcpm.rbegin()->first - tcpm.begin()->first ;
+    double scale = originalLength>0.0 ? (endTime-startTime)/originalLength : 1.0;
+
+    tcpm.clear();
+
+    for(osg::AnimationPath::TimeControlPointMap::iterator itr = copy_tcpm.begin();
+        itr != copy_tcpm.end();
+        ++itr)
+    {
+        tcpm[startTime + (itr->first-offset)*scale] = itr->second;
+    }
+}
+
+/////////////////////////////////////////////////////////////////////////////////////////
+//
+// Serialization support
+//
+REGISTER_OBJECT_WRAPPER( gsc_CameraPathProperty,
+                         new gsc::CameraPathProperty,
+                         gsc::CameraPathProperty,
+                         "osg::Object gsc::CameraPathProperty" )
+{
+    ADD_STRING_SERIALIZER( AnimationPathFileName, "" );
+}
+
+
+
+