void VCameraHandling::DeactivateAllCameras()
{
// Deactivate all orbit and path cameras.
const unsigned int uiNumEntities = VisBaseEntity_cl::ElementManagerGetSize();
for (unsigned int uiElementIndex = 0; uiElementIndex < uiNumEntities; uiElementIndex++)
{
VisBaseEntity_cl* pEntity = VisBaseEntity_cl::ElementManagerGet(uiElementIndex);
if (pEntity == NULL)
continue;
VFreeCamera* pFreeCamera = vdynamic_cast<VFreeCamera*>(pEntity);
VOrbitCamera* pOrbitCamera = pEntity->Components().GetComponentOfBaseType<VOrbitCamera>();
PathCameraEntity* pPathCamera = vdynamic_cast<PathCameraEntity*>(pEntity);
if (pFreeCamera != NULL)
pFreeCamera->SetThinkFunctionStatus(FALSE);
if (pOrbitCamera != NULL)
pOrbitCamera->SetEnabled(false);
if (pPathCamera != NULL)
pPathCamera->Stop();
}
}
// Some sample scenes create an automatic path camera, which doesn't work with
// our multi-context approach to rendering stereoscopic images, so we'll have to
// find and deactivate them.
void DeactivatePathCameraEntities()
{
for (unsigned int i=0;i<VisBaseEntity_cl::ElementManagerGetSize();i++)
{
VisBaseEntity_cl *pEnt = VisBaseEntity_cl::ElementManagerGet(i);
if ( pEnt && pEnt->GetTypeId() == PathCameraEntity::GetClassTypeId() )
{
PathCameraEntity* pPathCam = ( PathCameraEntity* ) pEnt;
pPathCam->Stop();
}
}
}
bool VCameraHandling::ActivateCamera(const EntityAccessor& entity)
{
if (!entity.IsValid())
return false;
// Always deactivate all cameras in case a camera was made active by code / script.
DeactivateAllCameras();
CameraPositionEntity* pCameraPosition = entity.GetAs<CameraPositionEntity>();
if (pCameraPosition != NULL)
{
// Apply FOV, and near / far plane settings. Afterwards the main camera is
// attached to the camera position.
pCameraPosition->ApplyToContext(Vision::Contexts.GetMainRenderContext());
// Copy transformation to free camera.
PlaceFreeCameraAtCurrentPosition();
return true;
}
VOrbitCamera* pOrbitCamera = entity.GetComponentOfBaseType<VOrbitCamera>();
if (pOrbitCamera != NULL)
{
pOrbitCamera->SetEnabled(true);
return true;
}
PathCameraEntity* pPathCamera = entity.GetAs<PathCameraEntity>();
if (pPathCamera != NULL)
{
pPathCamera->Start();
return true;
}
return false;
}
