Visualization Library v1.0.3A lightweight C++ OpenGL middleware for 2D/3D graphics |
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The SceneManagerPortals calss implements a portal-based hidden surface removal algorithm to efficently render highly occluded scenes. More...
#include <SceneManagerPortals.hpp>
Public Member Functions | |
SceneManagerPortals () | |
Constructor. | |
void | extractActors (ActorCollection &list) |
Appends to the given list all the Actor[s] contained in the scene regardless of their visibility. | |
void | extractVisibleActors (ActorCollection &list, const Camera *camera) |
Appends to the given list all the visible Actor[s] using the portal culling algorithm. | |
std::vector< ref< Sector > > & | sectors () |
The Sectors that are part of the scene. | |
const std::vector< ref< Sector > > & | sectors () const |
The Sectors that are part of the scene. | |
Sector * | externalSector () |
Returns the external sector. | |
const Sector * | externalSector () const |
Returns the external sector. | |
void | computePortalNormals () |
Compute the normal of the sectors. | |
void | initialize () |
Calls computePortalNormals() and performs some error checking. | |
bool | showPortals () const |
Whether portals should be shown in the rendering or not. | |
void | setShowPortals (bool show) |
Whether portals should be shown in the rendering or not. | |
void | invalidatePortalActors () |
Regenerates the portal actors next time their rendering is requested. | |
const std::vector< Frustum > & | frustumStack () const |
The stack of frustums active at a given point during sector discovery. | |
Protected Member Functions | |
void | renderPortal (Portal *portal) |
void | visitSector (Sector *prev, Sector *sector, const vec3 &eye, const Camera *camera) |
Sector * | computeStartingSector (const Camera *camera) |
Protected Attributes | |
ref< Sector > | mExternalSector |
std::vector< ref< Sector > > | mSectors |
std::vector< ref< Actor > > | mTempActors |
std::map< Portal *, ref< Actor > > | mPortalActorMap |
std::vector< Frustum > | mFrustumStack |
unsigned | mVisitTick |
bool | mShowPortals |
The SceneManagerPortals calss implements a portal-based hidden surface removal algorithm to efficently render highly occluded scenes.
Definition at line 184 of file SceneManagerPortals.hpp.
vl::SceneManagerPortals::SceneManagerPortals | ( | ) | [inline] |
Constructor.
Definition at line 190 of file SceneManagerPortals.hpp.
References VL_DEBUG_SET_OBJECT_NAME.
void SceneManagerPortals::extractActors | ( | ActorCollection & | list ) | [virtual] |
Appends to the given list all the Actor[s] contained in the scene regardless of their visibility.
Implements vl::SceneManager.
Definition at line 129 of file SceneManagerPortals.cpp.
References mSectors, and vl::Collection< T >::push_back().
Referenced by extractVisibleActors().
void SceneManagerPortals::extractVisibleActors | ( | ActorCollection & | list, |
const Camera * | camera | ||
) | [virtual] |
Appends to the given list all the visible Actor[s] using the portal culling algorithm.
Implements vl::SceneManager.
Definition at line 136 of file SceneManagerPortals.cpp.
References computeStartingSector(), vl::SceneManager::cullingEnabled(), vl::Sector::executeCallbacks(), extractActors(), vl::Camera::frustum(), vl::Matrix4< T_Scalar >::getT(), mFrustumStack, vl::Camera::modelingMatrix(), mTempActors, mVisitTick, NULL, vl::Collection< T >::push_back(), and visitSector().
The Sectors that are part of the scene.
Definition at line 201 of file SceneManagerPortals.hpp.
Referenced by computeStartingSector().
The Sectors that are part of the scene.
Definition at line 203 of file SceneManagerPortals.hpp.
Sector* vl::SceneManagerPortals::externalSector | ( | ) | [inline] |
Returns the external sector.
The external sector is a special sector that is considered visible when the camera is not inside any other sector. The external sector can be used to contain objects that are outside the indoor environment defined by the other "normal" sectors. For example, you could use the SceneManagerPortals to model a house and put in the external sector all the objects that are outside the house. The portals inside the house can point to the external sector so that the objects outside the house are rendered only if they are visible through a door or a window for maximum performances. Of course you can also go from an external sector to an internal sector just as well using one or more portals.
Definition at line 212 of file SceneManagerPortals.hpp.
Referenced by computeStartingSector().
const Sector* vl::SceneManagerPortals::externalSector | ( | ) | const [inline] |
Returns the external sector.
Definition at line 214 of file SceneManagerPortals.hpp.
void SceneManagerPortals::computePortalNormals | ( | ) |
Compute the normal of the sectors.
Definition at line 229 of file SceneManagerPortals.cpp.
References mSectors.
Referenced by initialize().
void SceneManagerPortals::initialize | ( | ) |
Calls computePortalNormals() and performs some error checking.
Definition at line 85 of file SceneManagerPortals.cpp.
References computePortalNormals(), vl::Log::error(), and mSectors.
bool vl::SceneManagerPortals::showPortals | ( | ) | const [inline] |
Whether portals should be shown in the rendering or not.
Definition at line 223 of file SceneManagerPortals.hpp.
Referenced by visitSector().
void vl::SceneManagerPortals::setShowPortals | ( | bool | show ) | [inline] |
Whether portals should be shown in the rendering or not.
Definition at line 225 of file SceneManagerPortals.hpp.
void vl::SceneManagerPortals::invalidatePortalActors | ( | ) | [inline] |
Regenerates the portal actors next time their rendering is requested.
Definition at line 227 of file SceneManagerPortals.hpp.
const std::vector<Frustum>& vl::SceneManagerPortals::frustumStack | ( | ) | const [inline] |
The stack of frustums active at a given point during sector discovery.
Definition at line 230 of file SceneManagerPortals.hpp.
void SceneManagerPortals::renderPortal | ( | Portal * | portal ) | [protected] |
Definition at line 98 of file SceneManagerPortals.cpp.
References vl::EN_BLEND, vl::Portal::geometry(), vl::ref< T >::get(), mPortalActorMap, mTempActors, NULL, vl::PT_LINE_LOOP, and vl::PT_POLYGON.
Referenced by visitSector().
void SceneManagerPortals::visitSector | ( | Sector * | prev, |
Sector * | sector, | ||
const vec3 & | eye, | ||
const Camera * | camera | ||
) | [protected] |
Definition at line 164 of file SceneManagerPortals.cpp.
References vl::Sector::actors(), vl::Collection< T >::at(), vl::Actor::boundingBox(), vl::Actor::computeBounds(), vl::cross(), vl::dot(), vl::Sector::executeCallbacks(), vl::SceneManager::isEnabled(), mFrustumStack, mTempActors, mVisitTick, vl::Vector3< T_Scalar >::normalize(), vl::Frustum::planes(), vl::Sector::portals(), renderPortal(), vl::Frustum::setPlane(), showPortals(), vl::Collection< T >::size(), and VL_CHECK.
Referenced by extractVisibleActors().
Definition at line 236 of file SceneManagerPortals.cpp.
References externalSector(), vl::Matrix4< T_Scalar >::getT(), vl::Camera::modelingMatrix(), mSectors, and sectors().
Referenced by extractVisibleActors().
ref<Sector> vl::SceneManagerPortals::mExternalSector [protected] |
Definition at line 238 of file SceneManagerPortals.hpp.
std::vector< ref<Sector> > vl::SceneManagerPortals::mSectors [protected] |
Definition at line 239 of file SceneManagerPortals.hpp.
Referenced by computePortalNormals(), computeStartingSector(), extractActors(), and initialize().
std::vector< ref<Actor> > vl::SceneManagerPortals::mTempActors [protected] |
Definition at line 240 of file SceneManagerPortals.hpp.
Referenced by extractVisibleActors(), renderPortal(), and visitSector().
std::map<Portal*, ref<Actor> > vl::SceneManagerPortals::mPortalActorMap [protected] |
Definition at line 241 of file SceneManagerPortals.hpp.
Referenced by renderPortal().
std::vector<Frustum> vl::SceneManagerPortals::mFrustumStack [protected] |
Definition at line 242 of file SceneManagerPortals.hpp.
Referenced by extractVisibleActors(), and visitSector().
unsigned vl::SceneManagerPortals::mVisitTick [protected] |
Definition at line 243 of file SceneManagerPortals.hpp.
Referenced by extractVisibleActors(), and visitSector().
bool vl::SceneManagerPortals::mShowPortals [protected] |
Definition at line 244 of file SceneManagerPortals.hpp.