Public API Reference

                 

---

iSector Struct Reference
[Crystal Space 3D Engine]

The iSector interface is used to work with "sectors". More...

#include <sector.h>

Inheritance diagram for iSector:

List of all members.

Public Methods
virtual csSector *	GetPrivateObject ()=0
	@ Used by the engine to retrieve internal sector object (ugly)
virtual iObject *	QueryObject ()=0
	Get the iObject for this sector.
virtual void	SetRenderLoop (iRenderLoop *rl)=0
	Set the renderloop to use for this sector.
virtual iRenderLoop *	GetRenderLoop ()=0
	Get the renderloop for this sector.
virtual bool	HasFog () const=0
	Has this sector fog?
virtual csFog *	GetFog () const=0
	Return the fog structure (even if fog is disabled).
virtual void	SetFog (float density, const csColor &color)=0
	Fill the fog structure with the given values.
virtual void	DisableFog ()=0
	Disable fog in this sector.
virtual iMeshList *	GetMeshes ()=0
	Get the list of meshes in this sector.
virtual iLightList *	GetLights ()=0
	Get the list of static and pseudo-dynamic lights in this sector.
virtual void	ShineLights ()=0
	Calculate lighting for all objects in this sector.
virtual void	ShineLights (iMeshWrapper *)=0
	Version of ShineLights() which only affects one mesh object.
virtual void	SetDynamicAmbientLight (const csColor &color)=0
	Sets dynamic ambient light for all things in the sector.
virtual csColor	GetDynamicAmbientLight () const=0
	Get the last set dynamic ambient light for this sector.
virtual void	CalculateSectorBBox (csBox3 &bbox, bool do_meshes) const=0
	Calculate the bounding box of all objects in this sector.
virtual bool	SetVisibilityCullerPlugin (const char *Name)=0
	Use the specified plugin as the visibility culler for this sector.
virtual iVisibilityCuller *	GetVisibilityCuller ()=0
	Get the visibility culler that is used for this sector.
virtual int	GetRecLevel () const=0
	Get the current draw recursion level.
virtual void	IncRecLevel ()=0
	Add one draw recursion level.
virtual void	DecRecLevel ()=0
	Remove one draw recursion level.
virtual iMeshWrapper *	HitBeamPortals (const csVector3 &start, const csVector3 &end, csVector3 &isect, int *polygon_idx)=0
	Follow a beam from start to end and return the first polygon that is hit.
virtual iMeshWrapper *	HitBeam (const csVector3 &start, const csVector3 &end, csVector3 &intersect, int *polygon_idx, bool accurate=false)=0
	Follow a beam from start to end and return the first object that is hit.
virtual iSector *	FollowSegment (csReversibleTransform &t, csVector3 &new_position, bool &mirror, bool only_portals=false)=0
	Follow a segment starting at this sector.
virtual void	Draw (iRenderView *rview)=0
	Draw the sector with the given render view.
virtual void	PrepareDraw (iRenderView *rview)=0
	Prepare the sector to draw.
virtual csRenderMeshList *	GetVisibleMeshes (iRenderView *)=0
	Get a set of visible meshes for given camera.
virtual void	SetSectorCallback (iSectorCallback *cb)=0
	Set the sector callback.
virtual void	RemoveSectorCallback (iSectorCallback *cb)=0
	Remove a sector callback.
virtual int	GetSectorCallbackCount () const=0
	Get the number of sector callbacks.
virtual iSectorCallback *	GetSectorCallback (int idx) const=0
	Get the specified sector callback.
virtual void	CheckFrustum (iFrustumView *lview)=0
	Used for portal traversal.
virtual const csSet< iMeshWrapper * > &	GetPortalMeshes () const=0
	Get the set of meshes containing portals that leave from this sector.
virtual void	RegisterPortalMesh (iMeshWrapper *mesh)=0
	Register a mesh with a portal.
virtual void	UnregisterPortalMesh (iMeshWrapper *mesh)=0
	Unregister a mesh with a portal.

---

Detailed Description

The iSector interface is used to work with "sectors".

A "sector" is an empty region of space that can contain other objects (mesh objects). A sector itself does not represent geometry but only contains other geometry. A sector does contain lights though. The sector is the basic building block for any Crystal Space level. A level can be made from one or more sectors. Using the thing mesh object one can use portals to connect multiple sectors.

Main creators of instances implementing this interface:

• iEngine::CreateSector()

Main ways to get pointers to this interface:

• iEngine::FindSector()
• iSectorList::Get()
• iSectorList::FindByName()
• iLoaderContext::FindSector()
• iPortal::GetSector()
• iCamera::GetSector()

Main users of this interface:

• iEngine

Definition at line 102 of file sector.h.

---

Member Function Documentation

virtual void iSector::CalculateSectorBBox (  csBox3 &    bbox, bool    do_meshes )  const [pure virtual]

Calculate the bounding box of all objects in this sector. This function is not very efficient as it will traverse all objects in the sector one by one and compute a bounding box from that.

virtual void iSector::CheckFrustum (  iFrustumView *    lview )  [pure virtual]

Used for portal traversal.

virtual void iSector::DecRecLevel (    )  [pure virtual]

Remove one draw recursion level.

virtual void iSector::DisableFog (    )  [pure virtual]

Disable fog in this sector.

virtual void iSector::Draw (  iRenderView *    rview )  [pure virtual]

Draw the sector with the given render view.

virtual iSector* iSector::FollowSegment (  csReversibleTransform &    t, csVector3 &    new_position, bool &    mirror, bool    only_portals = false )  [pure virtual]

Follow a segment starting at this sector. If the segment intersects with a polygon it will stop there unless the polygon is a portal in which case it will recursively go to that sector (possibly applying warping transformations) and continue there. This routine will modify all the given parameters to reflect space warping. These should be used as the new camera transformation when you decide to really go to the new position. This function returns the resulting sector and new_position will be set to the last position that you can go to before hitting a wall. If only_portals is true then only portals will be checked. This means that intersection with normal polygons is not checked. This is a lot faster but it does mean that you need to use another collision detection system to test with walls.

virtual csColor iSector::GetDynamicAmbientLight (    )  [pure virtual]

Get the last set dynamic ambient light for this sector.

virtual csFog* iSector::GetFog (    )  [pure virtual]

Return the fog structure (even if fog is disabled).

virtual iLightList* iSector::GetLights (    )  [pure virtual]

Get the list of static and pseudo-dynamic lights in this sector.

virtual iMeshList* iSector::GetMeshes (    )  [pure virtual]

Get the list of meshes in this sector.

virtual const csSet<iMeshWrapper*>& iSector::GetPortalMeshes (    )  [pure virtual]

Get the set of meshes containing portals that leave from this sector. Note that portals are uni-directional. The portals represented by this list are portals that are on some mesh object that is actually located in this sector.

virtual csSector* iSector::GetPrivateObject (    )  [pure virtual]

@ Used by the engine to retrieve internal sector object (ugly) @

virtual int iSector::GetRecLevel (    )  [pure virtual]

Get the current draw recursion level.

virtual iRenderLoop* iSector::GetRenderLoop (    )  [pure virtual]

Get the renderloop for this sector. If this returns 0 then it means there is no specific renderloop for this sector. In that case the default renderloop in the engine will be used.

virtual iSectorCallback* iSector::GetSectorCallback (  int    idx )  const [pure virtual]

Get the specified sector callback.

virtual int iSector::GetSectorCallbackCount (    )  [pure virtual]

Get the number of sector callbacks.

virtual iVisibilityCuller* iSector::GetVisibilityCuller (    )  [pure virtual]

Get the visibility culler that is used for this sector. If there is no culler yet a culler of type 'crystalspace.culling.frustvis' will be created and used for this sector.

virtual csRenderMeshList* iSector::GetVisibleMeshes (  iRenderView *    )  [pure virtual]

Get a set of visible meshes for given camera. These will be cached for a given frame and camera, but if the cached result isn't enough it will be reculled. The returned pointer is valid as long as the sector exsist (the sector will delete it)

virtual bool iSector::HasFog (    )  [pure virtual]

Has this sector fog?

virtual iMeshWrapper* iSector::HitBeam (  const csVector3 &    start, const csVector3 &    end, csVector3 &    intersect, int *    polygon_idx, bool    accurate = false )  [pure virtual]

Follow a beam from start to end and return the first object that is hit. In case it is a thing the polygon_idx field will be filled with the indices of the polygon that was hit. If polygon_idx is null then the polygon will not be filled in. This function doesn't support portals.

virtual iMeshWrapper* iSector::HitBeamPortals (  const csVector3 &    start, const csVector3 &    end, csVector3 &    isect, int *    polygon_idx )  [pure virtual]

Follow a beam from start to end and return the first polygon that is hit. This function correctly traverse portals and space warping portals. Normally the sector you call this on should be the sector containing the 'start' point. 'isect' will be the intersection point if a polygon is returned. This function returns -1 if no polygon was hit or the polygon index otherwise.

virtual void iSector::IncRecLevel (    )  [pure virtual]

Add one draw recursion level.

virtual void iSector::PrepareDraw (  iRenderView *    rview )  [pure virtual]

Prepare the sector to draw. Must be called before any rendermesh is requested.

virtual iObject* iSector::QueryObject (    )  [pure virtual]

Get the iObject for this sector.

virtual void iSector::RegisterPortalMesh (  iMeshWrapper *    mesh )  [pure virtual]

Register a mesh with a portal. @@ TO BE REMOVED...

virtual void iSector::RemoveSectorCallback (  iSectorCallback *    cb )  [pure virtual]

Remove a sector callback.

virtual void iSector::SetDynamicAmbientLight (  const csColor &    color )  [pure virtual]

Sets dynamic ambient light for all things in the sector.

virtual void iSector::SetFog (  float    density, const csColor &    color )  [pure virtual]

Fill the fog structure with the given values.

virtual void iSector::SetRenderLoop (  iRenderLoop *    rl )  [pure virtual]

Set the renderloop to use for this sector. If this is not set then the default engine renderloop will be used.

virtual void iSector::SetSectorCallback (  iSectorCallback *    cb )  [pure virtual]

Set the sector callback. This will call IncRef() on the callback So make sure you call DecRef() to release your own reference.

virtual bool iSector::SetVisibilityCullerPlugin (  const char *    Name )  [pure virtual]

Use the specified plugin as the visibility culler for this sector. Returns false if the culler could not be loaded for some reason.

virtual void iSector::ShineLights (  iMeshWrapper *    )  [pure virtual]

Version of ShineLights() which only affects one mesh object.

virtual void iSector::ShineLights (    )  [pure virtual]

Calculate lighting for all objects in this sector.

virtual void iSector::UnregisterPortalMesh (  iMeshWrapper *    mesh )  [pure virtual]

Unregister a mesh with a portal. @@ TO BE REMOVED...

---

The documentation for this struct was generated from the following file:

• iengine/sector.h

---