Extending SoPickStyle class

[[email protected]]

Dear Mike,
Dear Users,

Please, i'd like to extend the SoPickStyle class, in order to manage better the unpickable shapes:
i'd like to have unpickable shapes (points and normals unvailable using RayPick action), but selectable (using SoSelection node);

so i derived a class from SoPickStyle and using a flag "force_shape_selection" in order to try to force the selection by SoSelection Node
now i have a doubt:
in my class i have the ovveride of the following function:
doAction,
callback
and pick.


Can i manage inside the SoRayPick extended class the "force pick"
or i must ovveride also the SoShape nodes, managing the shouldRayPick function?

Or maybe is there another way that is unknown to me?

I hope i well explained all, but if you need futher informations, don't hesitate to ask.

Best Regards,

Vincenzo

[[email protected]]

update:

after writing the following code:

void SoPickStyleExt::pick(SoPickAction* action)
{
if (style.getValue() == UNPICKABLE)
{
if (canSelect() && action)
{
if (action->getPathAppliedTo())
{
pTo3DView->GetViewer()->getViewerSceneManager()->getGLRenderAction()->apply(action->getPathAppliedTo());
}
else if (action->getNodeAppliedTo())
{
pTo3DView->GetViewer()->getViewerSceneManager()->getGLRenderAction()->apply(action->getNodeAppliedTo());
}
else
{
ASSERT(FALSE);
}

return;
}
}

__super::pick(action);
}

where pTo3DView is the main class containing the SoWinFullViewer member to show the 3D scene graph,

i've got the following warning messages:


Inventor error: SoGLRenderAction::setUpState called without valid context

Inventor error: SoGLRenderAction called without valid context

Inventor error: SoGLRenderAction::setUpState called without valid context

Inventor error: SoGLRenderAction called without valid context

Inventor error: SoGLRenderAction::setUpState called without valid context

Inventor error: SoGLRenderAction called without valid context

Inventor error: SoGLRenderAction::setUpState called without valid context

Inventor error: SoGLRenderAction called without valid context

Please, can i call the render action directly or i must set up something else?

Is it the right way or there is a better way to have the same beahviour?

Thank You very much.

Vincenzo

[[email protected]]

Another Update:

after reading docs and googling

void SoPickStyleExt::pick(SoPickAction* action)
{
if (style.getValue() == UNPICKABLE)
{
if (canSelect() && action)
{

//SbThreadAutoLock lock(classMutex);


pTo3DView->GetViewer()->bindNormalContext();


if (!action->getState())
action->setUpState();


if (action->isOfType(SoRayPickAction::getClassTypeId()))
{
if (((SoRayPickAction*)action)->isRadiusEnableForTriangles())
{
__super::pick(action);
return;
}
}

action->getState()->push();

if (action->getPathAppliedTo())
{
//pTo3DView->GetViewer()->getViewerSceneManager()->getGLRenderAction()->apply(action->getPathAppliedTo());
if (action->getSceneManager())
action->getSceneManager()->getGLRenderAction()->apply(action->getPathAppliedTo());

}
else if (action->getNodeAppliedTo())
{
// if (!pTo3DView->GetViewer()->getViewerSceneManager()->getGLRenderAction()->getState())
// pTo3DView->GetViewer()->getViewerSceneManager()->getGLRenderAction()->setUpState();
//pTo3DView->GetViewer()->getViewerSceneManager()->getGLRenderAction()->apply(action->getNodeAppliedTo());
if (action->getSceneManager())
action->getSceneManager()->getGLRenderAction()->apply(action->getNodeAppliedTo());


//g_PitagoraAppSceneGraph.m_pSelectionNode->select(action->getNodeAppliedTo());
}
else
{
ASSERT(FALSE);
}

action->getState()->pop();

//if (bNoContext_oGL)
//{
// context->unbind();
// if (context->getRefCount() > 0)
// context->unref();
//}

return;
}
}

__super::pick(action);
}

using the above code i have not warning/error messages, but still remain my question about the best ways to do this behaviour...

Regards,
Vincenzo