// selectObject
// detect list objs at rect
void CDocument::selectObject( int x, int y, int w, int h, bool isControlHold )
{
IView *pView = getIView();
ISceneManager *smgr = pView->getSceneMgr();
ICameraSceneNode *camera = smgr->getActiveCamera();
// if no camera
if ( camera == NULL )
return;
const SViewFrustum* viewFrustum = camera->getViewFrustum();
ISceneCollisionManager *collMan = smgr->getSceneCollisionManager();
int screenX = -1, screenY = -1;
ArrayZoneIter iZone = m_zones.begin(), iEnd = m_zones.end();
while ( iZone != iEnd )
{
ArrayGameObject* listObj = (*iZone)->getChilds();
ArrayGameObjectIter iObj = listObj->begin(), objEnd = listObj->end();
ISceneNode *pNode = NULL;
while ( iObj != objEnd )
{
CGameObject *pGameObj = (CGameObject*)(*iObj);
pNode = pGameObj->getSceneNode();
if ( pNode != NULL && pGameObj->isVisible() )
{
core::vector3df center = pGameObj->getPosition();
// check object is in frustum
if ( viewFrustum->getBoundingBox().isPointInside( center ) )
{
if ( pView->getScreenCoordinatesFrom3DPosition( center, &screenX, &screenY ) )
{
if ( x <= screenX && screenX <= x + w && y <= screenY && screenY <= y + h )
{
if ( isControlHold == false || pGameObj->getObjectState() == CGameObject::Normal )
m_selectObjects.push_back( pGameObj );
} // inselect
} // getScreenCoordinatesFrom3DPosition
} // frustum
}
iObj++;
}
iZone++;
}
}
// selectObject
// detect list objs at mouse xy
void CDocument::selectObject( int mouseX, int mouseY, bool isControlHold )
{
ISceneManager *smgr = getIView()->getSceneMgr();
ICameraSceneNode *camera = smgr->getActiveCamera();
// if no camera
if ( camera == NULL )
return;
ISceneCollisionManager *collMan = smgr->getSceneCollisionManager();
// get select ray
core::line3df selectRay = getIView()->getSelectRay();
// check hit test
core::vector3df intersection;
core::triangle3df hitTriangle;
// check select
ISceneNode *selectedSceneNode = collMan->getSceneNodeAndCollisionPointFromRay
(
selectRay,
intersection,
hitTriangle
);
if ( selectedSceneNode )
{
CGameObject *pObj = searchObject( selectedSceneNode->getID() );
// try find parent
while ( pObj == NULL )
{
selectedSceneNode = selectedSceneNode->getParent();
if ( selectedSceneNode == NULL )
break;
pObj = searchObject( selectedSceneNode->getID() );
}
// add to select list
if ( pObj && pObj->isVisible() )
{
if ( isControlHold == false || pObj->getObjectState() == CGameObject::Normal )
m_selectObjects.push_back( pObj );
else
{
pObj->setObjectState( CGameObject::Normal );
ArrayGameObjectIter i = m_selectObjects.begin(), iEnd = m_selectObjects.end();
while ( i != iEnd )
{
if ( (*i) == pObj )
{
m_selectObjects.erase( i );
break;
}
i++;
}
}
}
}
}