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Ogre::TerrainRaySceneQuery Class Reference

Default implementation of RaySceneQuery. More...

#include <OgreTerrainSceneManager.h>

Inheritance diagram for Ogre::TerrainRaySceneQuery:

Ogre::OctreeRaySceneQuery Ogre::DefaultRaySceneQuery Ogre::RaySceneQuery Ogre::SceneQuery Ogre::RaySceneQueryListener List of all members.

Public Types

enum  WorldFragmentType {
  WFT_NONE, WFT_PLANE_BOUNDED_REGION, WFT_SINGLE_INTERSECTION, WFT_CUSTOM_GEOMETRY,
  WFT_RENDER_OPERATION
}
 This type can be used by collaborating applications & SceneManagers to agree on the type of world geometry to be returned from queries. More...


Public Member Functions

 TerrainRaySceneQuery (SceneManager *creator)
 ~TerrainRaySceneQuery ()
void execute (RaySceneQueryListener *listener)
 See RayScenQuery.

virtual RaySceneQueryResultexecute (void)
 Executes the query, returning the results back in one list.

virtual void setRay (const Ray &ray)
 Sets the ray which is to be used for this query.

virtual const RaygetRay (void) const
 Gets the ray which is to be used for this query.

virtual void setSortByDistance (bool sort, ushort maxresults=0)
 Sets whether the results of this query will be sorted by distance along the ray.

virtual bool getSortByDistance (void) const
 Gets whether the results are sorted by distance.

virtual ushort getMaxResults (void) const
 Gets the maximum number of results returned from the query (only relevant if results are being sorted).

virtual RaySceneQueryResultgetLastResults (void)
 Gets the results of the last query that was run using this object, provided the query was executed using the collection-returning version of execute.

virtual void clearResults (void)
 Clears the results of the last query execution.

bool queryResult (MovableObject *obj, Real distance)
 Self-callback in order to deal with execute which returns collection.

bool queryResult (SceneQuery::WorldFragment *fragment, Real distance)
 Self-callback in order to deal with execute which returns collection.

virtual void setQueryMask (uint32 mask)
 Sets the mask for results of this query.

virtual uint32 getQueryMask (void) const
 Returns the current mask for this query.

virtual void setQueryTypeMask (uint32 mask)
 Sets the type mask for results of this query.

virtual uint32 getQueryTypeMask (void) const
 Returns the current mask for this query.

virtual void setWorldFragmentType (enum WorldFragmentType wft)
 Tells the query what kind of world geometry to return from queries; often the full renderable geometry is not what is needed.

virtual WorldFragmentType getWorldFragmentType (void) const
 Gets the current world fragment types to be returned from the query.

virtual const std::set< WorldFragmentType > * getSupportedWorldFragmentTypes (void) const
 Returns the types of world fragments this query supports.


Protected Attributes

WorldFragment mWorldFrag
Ray mRay
bool mSortByDistance
ushort mMaxResults
RaySceneQueryResult mResult
SceneManagermParentSceneMgr
uint32 mQueryMask
uint32 mQueryTypeMask
std::set< WorldFragmentTypemSupportedWorldFragments
WorldFragmentType mWorldFragmentType

Detailed Description

Default implementation of RaySceneQuery.

Definition at line 56 of file OgreTerrainSceneManager.h.


Member Enumeration Documentation

enum Ogre::SceneQuery::WorldFragmentType [inherited]
 

This type can be used by collaborating applications & SceneManagers to agree on the type of world geometry to be returned from queries.

Not all these types will be supported by all SceneManagers; once the application has decided which SceneManager specialisation to use, it is expected that it will know which type of world geometry abstraction is available to it.

Enumeration values:
WFT_NONE  Return no world geometry hits at all.
WFT_PLANE_BOUNDED_REGION  Return pointers to convex plane-bounded regions.
WFT_SINGLE_INTERSECTION  Return a single intersection point (typically RaySceneQuery only).
WFT_CUSTOM_GEOMETRY  Custom geometry as defined by the SceneManager.
WFT_RENDER_OPERATION  General RenderOperation structure.

Definition at line 73 of file OgreSceneQuery.h.


Constructor & Destructor Documentation

Ogre::TerrainRaySceneQuery::TerrainRaySceneQuery SceneManager creator  ) 
 

Ogre::TerrainRaySceneQuery::~TerrainRaySceneQuery  ) 
 


Member Function Documentation

virtual void Ogre::RaySceneQuery::clearResults void   )  [virtual, inherited]
 

Clears the results of the last query execution.

Remarks:
You only need to call this if you specifically want to free up the memory used by this object to hold the last query results. This object clears the results itself when executing and when destroying itself.

virtual RaySceneQueryResult& Ogre::RaySceneQuery::execute void   )  [virtual, inherited]
 

Executes the query, returning the results back in one list.

Remarks:
This method executes the scene query as configured, gathers the results into one structure and returns a reference to that structure. These results will also persist in this query object until the next query is executed, or clearResults() is called. An more lightweight version of this method that returns results through a listener is also available.

void Ogre::TerrainRaySceneQuery::execute RaySceneQueryListener listener  )  [virtual]
 

See RayScenQuery.

Reimplemented from Ogre::OctreeRaySceneQuery.

virtual RaySceneQueryResult& Ogre::RaySceneQuery::getLastResults void   )  [virtual, inherited]
 

Gets the results of the last query that was run using this object, provided the query was executed using the collection-returning version of execute.

virtual ushort Ogre::RaySceneQuery::getMaxResults void   )  const [virtual, inherited]
 

Gets the maximum number of results returned from the query (only relevant if results are being sorted).

virtual uint32 Ogre::SceneQuery::getQueryMask void   )  const [virtual, inherited]
 

Returns the current mask for this query.

virtual uint32 Ogre::SceneQuery::getQueryTypeMask void   )  const [virtual, inherited]
 

Returns the current mask for this query.

virtual const Ray& Ogre::RaySceneQuery::getRay void   )  const [virtual, inherited]
 

Gets the ray which is to be used for this query.

virtual bool Ogre::RaySceneQuery::getSortByDistance void   )  const [virtual, inherited]
 

Gets whether the results are sorted by distance.

virtual const std::set<WorldFragmentType>* Ogre::SceneQuery::getSupportedWorldFragmentTypes void   )  const [virtual, inherited]
 

Returns the types of world fragments this query supports.

Definition at line 165 of file OgreSceneQuery.h.

virtual WorldFragmentType Ogre::SceneQuery::getWorldFragmentType void   )  const [virtual, inherited]
 

Gets the current world fragment types to be returned from the query.

bool Ogre::RaySceneQuery::queryResult SceneQuery::WorldFragment fragment,
Real  distance
[virtual, inherited]
 

Self-callback in order to deal with execute which returns collection.

Implements Ogre::RaySceneQueryListener.

bool Ogre::RaySceneQuery::queryResult MovableObject obj,
Real  distance
[virtual, inherited]
 

Self-callback in order to deal with execute which returns collection.

Implements Ogre::RaySceneQueryListener.

virtual void Ogre::SceneQuery::setQueryMask uint32  mask  )  [virtual, inherited]
 

Sets the mask for results of this query.

Remarks:
This method allows you to set a 'mask' to limit the results of this query to certain types of result. The actual meaning of this value is up to the application; basically MovableObject instances will only be returned from this query if a bitwise AND operation between this mask value and the MovableObject::getQueryFlags value is non-zero. The application will have to decide what each of the bits means.

virtual void Ogre::SceneQuery::setQueryTypeMask uint32  mask  )  [virtual, inherited]
 

Sets the type mask for results of this query.

Remarks:
This method allows you to set a 'type mask' to limit the results of this query to certain types of objects. Whilst setQueryMask deals with flags set per instance of object, this method deals with setting a mask on flags set per type of object. Both may exclude an object from query results.

virtual void Ogre::RaySceneQuery::setRay const Ray ray  )  [virtual, inherited]
 

Sets the ray which is to be used for this query.

virtual void Ogre::RaySceneQuery::setSortByDistance bool  sort,
ushort  maxresults = 0
[virtual, inherited]
 

Sets whether the results of this query will be sorted by distance along the ray.

Remarks:
Often you want to know what was the first object a ray intersected with, and this method allows you to ask the query to sort the results so that the nearest results are listed first.
Note that because the query returns results based on bounding volumes, the ray may not actually intersect the detail of the objects returned from the query, just their bounding volumes. For this reason the caller is advised to use more detailed intersection tests on the results if a more accurate result is required; OGRE uses bounds checking in order to give the most speedy results since not all applications need extreme accuracy.
Parameters:
sort If true, results will be sorted.
maxresults If sorting is enabled, this value can be used to constrain the maximum number of results that are returned. Please note (as above) that the use of bounding volumes mean that accuracy is not guaranteed; if in doubt, allow more results and filter them in more detail. 0 means unlimited results.

virtual void Ogre::SceneQuery::setWorldFragmentType enum WorldFragmentType  wft  )  [virtual, inherited]
 

Tells the query what kind of world geometry to return from queries; often the full renderable geometry is not what is needed.

Remarks:
The application receiving the world geometry is expected to know what to do with it; inevitably this means that the application must have knowledge of at least some of the structures used by the custom SceneManager.
The default setting is WFT_NONE.


Member Data Documentation

ushort Ogre::RaySceneQuery::mMaxResults [protected, inherited]
 

Definition at line 371 of file OgreSceneQuery.h.

SceneManager* Ogre::SceneQuery::mParentSceneMgr [protected, inherited]
 

Definition at line 113 of file OgreSceneQuery.h.

uint32 Ogre::SceneQuery::mQueryMask [protected, inherited]
 

Definition at line 114 of file OgreSceneQuery.h.

uint32 Ogre::SceneQuery::mQueryTypeMask [protected, inherited]
 

Definition at line 115 of file OgreSceneQuery.h.

Ray Ogre::RaySceneQuery::mRay [protected, inherited]
 

Definition at line 369 of file OgreSceneQuery.h.

RaySceneQueryResult Ogre::RaySceneQuery::mResult [protected, inherited]
 

Definition at line 372 of file OgreSceneQuery.h.

bool Ogre::RaySceneQuery::mSortByDistance [protected, inherited]
 

Definition at line 370 of file OgreSceneQuery.h.

std::set<WorldFragmentType> Ogre::SceneQuery::mSupportedWorldFragments [protected, inherited]
 

Definition at line 116 of file OgreSceneQuery.h.

WorldFragment Ogre::TerrainRaySceneQuery::mWorldFrag [protected]
 

Definition at line 59 of file OgreTerrainSceneManager.h.

WorldFragmentType Ogre::SceneQuery::mWorldFragmentType [protected, inherited]
 

Definition at line 117 of file OgreSceneQuery.h.


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

Copyright © 2000-2005 by The OGRE Team
Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Sun Mar 12 14:48:29 2006