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Moved PickVistor into osgUtil

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This commit is contained in:
Robert Osfield
2005-12-07 10:25:50 +00:00
parent 2d14519946
commit 99be2cdb7f
4 changed files with 103 additions and 83 deletions
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85
src/osgProducer/Viewer.cpp
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@@ -30,87 +30,6 @@ using namespace osg;
#define SINGLE_THREAD_KEYBOARDMOUSE
#endif
//////////////////////////////////////////////////////////////////////////////
//
// Picking intersection visitor.
//
class PickVisitor : public osgUtil::IntersectVisitor
{
public:
PickVisitor(const osg::Viewport* viewport, const osg::Matrixd& proj, const osg::Matrixd& view, float mx, float my):
_mx(mx),
_my(my),
_lastViewport(viewport),
_lastProjectionMatrix(proj),
_lastViewMatrix(view)
{
if (viewport &&
mx >= static_cast<float>(viewport->x()) &&
my >= static_cast<float>(viewport->y()) &&
mx < static_cast<float>(viewport->x()+viewport->width()) &&
my < static_cast<float>(viewport->y()+viewport->height()))
{
// mouse pointer intersect viewport so we can proceed to set up a line segment
osg::Matrix MVPW = view * proj * viewport->computeWindowMatrix();
osg::Matrixd inverseMVPW;
inverseMVPW.invert(MVPW);
osg::Vec3 nearPoint = osg::Vec3(mx,my,0.0f) * inverseMVPW;
osg::Vec3 farPoint = osg::Vec3(mx,my,1.0f) * inverseMVPW;
osg::LineSegment* lineSegment = new osg::LineSegment;
lineSegment->set(nearPoint, farPoint);
addLineSegment(lineSegment);
}
}
void runNestedPickVisitor(osg::Node& node, const osg::Viewport* viewport, const osg::Matrix& proj, const osg::Matrix& view, float mx, float my)
{
PickVisitor newPickVisitor( viewport, proj, view, _mx, _my );
newPickVisitor.setTraversalMask(getTraversalMask());
// the new pickvisitor over the nodes children.
node.traverse( newPickVisitor );
for(LineSegmentHitListMap::iterator itr = newPickVisitor._segHitList.begin();
itr != newPickVisitor._segHitList.end();
++itr)
{
_segHitList.insert(*itr);
}
}
void apply(osg::Projection& projection)
{
runNestedPickVisitor( projection,
_lastViewport.get(),
projection.getMatrix(),
_lastViewMatrix,
_mx, _my );
}
void apply(osg::CameraNode& camera)
{
runNestedPickVisitor( camera,
camera.getViewport() ? camera.getViewport() : _lastViewport.get(),
camera.getProjectionMatrix(),
camera.getViewMatrix(),
_mx, _my );
}
float _mx;
float _my;
osg::ref_ptr<const osg::Viewport> _lastViewport;
osg::Matrixd _lastProjectionMatrix;
osg::Matrixd _lastViewMatrix;
};
class CollectedCoordinateSystemNodesVisitor : public osg::NodeVisitor
{
@@ -847,13 +766,13 @@ bool Viewer::computeIntersections(float x,float y,unsigned int cameraNum,osg::No
node = node->getParent(0);
PickVisitor pick(viewport, proj, view, pixel_x, pixel_y);
osgUtil::PickVisitor pick(viewport, proj, view, pixel_x, pixel_y);
pick.setTraversalMask(traversalMask);
node->accept(pick);
// copy all the hits across to the external hits list
for(osgUtil::IntersectVisitor::LineSegmentHitListMap::iterator itr = pick.getSegHitList().begin();
for(osgUtil::PickVisitor::LineSegmentHitListMap::iterator itr = pick.getSegHitList().begin();
itr != pick.getSegHitList().end();
++itr)
{