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Added CameraProperty and associated command line parameters for controlling camera position and animation.

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--center x y z
  --eye x y z
  --up x y z 
  --rotation-center x y z
  --rotation-axis x y z
  --rotation-speed degreesPerSecond
This commit is contained in:
Robert Osfield
2012-12-04 12:47:46 +00:00
parent cbf6745da5
commit b6d19d1052
5 changed files with 201 additions and 19 deletions
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59
examples/osgframerenderer/CameraProperty.cpp Normal file
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#include "CameraProperty.h"
using namespace gsc;
void CameraProperty::setToModel(const osg::Node* node)
{
double distanceRatio = 3.5;
osg::BoundingSphere bs = node->getBound();
_center = bs.center();
_eye = _center - osg::Vec3d(0.0, -bs.radius()*distanceRatio, 0.0);
_up = osg::Vec3d(0.0, 0.0, 1.0);
_rotationCenter = _center;
_rotationAxis = osg::Vec3d(0.0, 0.0, 1.0);
_rotationSpeed = 0.0;
}
void CameraProperty::update(osgViewer::View* view)
{
osg::Camera* camera = view->getCamera();
osg::FrameStamp* fs = view->getFrameStamp();
osg::Matrixd matrix;
matrix.makeLookAt(_eye, _center, _up);
if (_rotationSpeed!=0.0)
{
matrix.preMult(osg::Matrixd::translate(-_rotationCenter) *
osg::Matrix::rotate(osg::DegreesToRadians(_rotationSpeed*fs->getSimulationTime()), _rotationAxis) *
osg::Matrixd::translate(_rotationCenter));
}
camera->setViewMatrix( matrix );
}
/////////////////////////////////////////////////////////////////////////////////////////
//
// Serialization support
//
REGISTER_OBJECT_WRAPPER( gsc_CameraProperty,
new gsc::CameraProperty,
gsc::CameraProperty,
"osg::Object gsc::CameraProperty" )
{
ADD_VEC3D_SERIALIZER( Center, osg::Vec3d(0.0,0.0,0.0) );
ADD_VEC3D_SERIALIZER( EyePoint, osg::Vec3d(0.0,-1.0,0.0) );
ADD_VEC3D_SERIALIZER( UpVector, osg::Vec3d(0.0,0.0,1.0) );
ADD_VEC3D_SERIALIZER( RotationCenter, osg::Vec3d(0.0,0.0,0.0) );
ADD_VEC3D_SERIALIZER( RotationAxis, osg::Vec3d(0.0,0.0,1.0) );
ADD_DOUBLE_SERIALIZER( RotationSpeed, 0.0 );
}