Hi Hakan,
If you want to simply drag (or do other transformation to) an object you can
use the Dragger from the osgManipulator pluggin:
Code:
osgManipulator::TranslateAxisDragger
Otherwise you need to project the mouse to the world space.
If I recall correctly:
Code:
osgViewer::View *view = dynamic_cast<osgViewer::View *>(&actionAdapter);
const osg::Camera *camera = view->getCamera();
const osg::Matrixd viewMatrix = camera->getViewMatrix();
const osg::Matrix projectionMatrix = camera->getProjectionMatrix();
osg::Matrix inverseCameraMatrix;
inverseCameraMatrix.invert(viewMatrix * projectionMatrix);
osg::Vec3 worldPosition = osg::Vec3(ea.getXnormalized(),
ea.getYnormalized(), 0.0f) *
inverseCameraMatrix;
The z value of the Vec3 is the Near Plane, set it to 1.0 to have the Far Plane
projection.
Best,
Florian
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=72440#72440
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