OgreBillboardSet.h
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1 /*
2 -----------------------------------------------------------------------------
3 This source file is part of OGRE
4  (Object-oriented Graphics Rendering Engine)
5 For the latest info, see http://www.ogre3d.org/
6 
7 Copyright (c) 2000-2013 Torus Knot Software Ltd
8 
9 Permission is hereby granted, free of charge, to any person obtaining a copy
10 of this software and associated documentation files (the "Software"), to deal
11 in the Software without restriction, including without limitation the rights
12 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 copies of the Software, and to permit persons to whom the Software is
14 furnished to do so, subject to the following conditions:
15 
16 The above copyright notice and this permission notice shall be included in
17 all copies or substantial portions of the Software.
18 
19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 THE SOFTWARE.
26 -----------------------------------------------------------------------------
27 */
28 
29 #ifndef __BillboardSet_H__
30 #define __BillboardSet_H__
31 
32 #include "OgrePrerequisites.h"
33 
34 #include "OgreMovableObject.h"
35 #include "OgreRenderable.h"
36 #include "OgreRadixSort.h"
37 #include "OgreCommon.h"
39 #include "OgreHeaderPrefix.h"
40 
41 namespace Ogre {
55  {
65  };
68  {
73  };
76  {
87  };
88 
111  {
112  protected:
115  BillboardSet();
116 
121 
126 
131 
136 
139 
142 
145 
148 
151 
155 
165 
174 
180 
186  float* mLockPtr;
190  Vector3 mVOffset[4];
194  Real mLeftOff, mRightOff, mTopOff, mBottomOff;
196  Vector3 mCamX, mCamY;
203 
206 
209 
212 
215 
220 
222  inline bool billboardVisible(Camera* cam, const Billboard& bill);
223 
225  unsigned short mNumVisibleBillboards;
226 
228  virtual void increasePool(size_t size);
229 
230 
231  //-----------------------------------------------------------------------
232  // The internal methods which follow are here to allow maximum flexibility as to
233  // when various components of the calculation are done. Depending on whether the
234  // billboards are of fixed size and whether they are point or oriented type will
235  // determine how much calculation has to be done per-billboard. NOT a one-size fits all approach.
236  //-----------------------------------------------------------------------
241  void genBillboardAxes(Vector3* pX, Vector3 *pY, const Billboard* pBill = 0);
242 
245  void getParametricOffsets(Real& left, Real& right, Real& top, Real& bottom);
246 
251  void genVertices(const Vector3* const offsets, const Billboard& pBillboard);
252 
260  void genVertOffsets(Real inleft, Real inright, Real intop, Real inbottom,
261  Real width, Real height,
262  const Vector3& x, const Vector3& y, Vector3* pDestVec);
263 
264 
267  {
270 
271  SortByDirectionFunctor(const Vector3& dir);
272  float operator()(Billboard* bill) const;
273  };
274 
277  {
280 
281  SortByDistanceFunctor(const Vector3& pos);
282  float operator()(Billboard* bill) const;
283  };
284 
286 
289 
290 
291 
292  private:
296  size_t mPoolSize;
303 
306  void _createBuffers(void);
309  void _destroyBuffers(void);
310 
311  public:
312 
332  BillboardSet( const String& name, unsigned int poolSize = 20,
333  bool externalDataSource = false);
334 
335  virtual ~BillboardSet();
336 
354  Billboard* createBillboard(
355  const Vector3& position,
356  const ColourValue& colour = ColourValue::White );
357 
379  Billboard* createBillboard(
380  Real x, Real y, Real z,
381  const ColourValue& colour = ColourValue::White );
382 
385  virtual int getNumBillboards(void) const;
386 
402  virtual void setAutoextend(bool autoextend);
403 
408  virtual bool getAutoextend(void) const;
409 
413  virtual void setSortingEnabled(bool sortenable);
414 
419  virtual bool getSortingEnabled(void) const;
420 
431  virtual void setPoolSize(size_t size);
432 
439  virtual unsigned int getPoolSize(void) const;
440 
441 
444  virtual void clear();
445 
457  virtual Billboard* getBillboard(unsigned int index) const;
458 
463  virtual void removeBillboard(unsigned int index);
464 
469  virtual void removeBillboard(Billboard* pBill);
470 
482  virtual void setBillboardOrigin(BillboardOrigin origin);
483 
488  virtual BillboardOrigin getBillboardOrigin(void) const;
489 
499  virtual void setBillboardRotationType(BillboardRotationType rotationType);
500 
505  virtual BillboardRotationType getBillboardRotationType(void) const;
506 
517  virtual void setDefaultDimensions(Real width, Real height);
518 
520  virtual void setDefaultWidth(Real width);
522  virtual Real getDefaultWidth(void) const;
524  virtual void setDefaultHeight(Real height);
526  virtual Real getDefaultHeight(void) const;
527 
532  virtual void setMaterialName( const String& name, const String& groupName = ResourceGroupManager::AUTODETECT_RESOURCE_GROUP_NAME );
533 
537  virtual const String& getMaterialName(void) const;
538 
543  virtual void _notifyCurrentCamera(Camera* cam);
544 
550  void beginBillboards(size_t numBillboards = 0);
552  void injectBillboard(const Billboard& bb);
554  void endBillboards(void);
560  void setBounds(const AxisAlignedBox& box, Real radius);
561 
562 
567  virtual const AxisAlignedBox& getBoundingBox(void) const;
568 
573  virtual Real getBoundingRadius(void) const;
578  virtual void _updateRenderQueue(RenderQueue* queue);
579 
584  virtual const MaterialPtr& getMaterial(void) const;
585 
590  virtual void setMaterial( const MaterialPtr& material );
591 
596  virtual void getRenderOperation(RenderOperation& op);
597 
602  virtual void getWorldTransforms(Matrix4* xform) const;
603 
606  virtual void _notifyBillboardResized(void);
607 
610  virtual void _notifyBillboardRotated(void);
611 
613  virtual bool getCullIndividually(void) const;
634  virtual void setCullIndividually(bool cullIndividual);
635 
656  virtual void setBillboardType(BillboardType bbt);
657 
659  virtual BillboardType getBillboardType(void) const;
660 
675  virtual void setCommonDirection(const Vector3& vec);
676 
678  virtual const Vector3& getCommonDirection(void) const;
679 
694  virtual void setCommonUpVector(const Vector3& vec);
695 
697  virtual const Vector3& getCommonUpVector(void) const;
698 
712  virtual void setUseAccurateFacing(bool acc) { mAccurateFacing = acc; }
717  virtual bool getUseAccurateFacing(void) const { return mAccurateFacing; }
718 
720  virtual const String& getMovableType(void) const;
721 
723  Real getSquaredViewDepth(const Camera* cam) const;
724 
726  virtual void _updateBounds(void);
728  const LightList& getLights(void) const;
729 
731  void visitRenderables(Renderable::Visitor* visitor,
732  bool debugRenderables = false);
733 
735  virtual void _sortBillboards( Camera* cam);
736 
738  virtual SortMode _getSortMode(void) const;
739 
745  virtual void setBillboardsInWorldSpace(bool ws) { mWorldSpace = ws; }
746 
774  virtual void setTextureCoords( Ogre::FloatRect const * coords, uint16 numCoords );
775 
789  virtual void setTextureStacksAndSlices( uchar stacks, uchar slices );
790 
797  virtual Ogre::FloatRect const * getTextureCoords( uint16 * oNumCoords );
798 
827  virtual void setPointRenderingEnabled(bool enabled);
828 
830  virtual bool isPointRenderingEnabled(void) const
831  { return mPointRendering; }
832 
834  uint32 getTypeFlags(void) const;
835 
845  void setAutoUpdate(bool autoUpdate);
846 
848  bool getAutoUpdate(void) const { return mAutoUpdate; }
849 
854  void notifyBillboardDataChanged(void) { mBillboardDataChanged = true; }
855 
856  };
857 
860  {
861  protected:
862  MovableObject* createInstanceImpl( const String& name, const NameValuePairList* params);
863  public:
866 
868 
869  const String& getType(void) const;
870  void destroyInstance( MovableObject* obj);
871 
872  };
876 } // namespace Ogre
877 
878 #include "OgreHeaderSuffix.h"
879 
880 #endif // __BillboardSet_H__
Real mBoundingRadius
Bounding radius.
static RadixSort< ActiveBillboardList, Billboard *, float > mRadixSorter
Billboards are perpendicular to their own direction vector (their own Z axis, the facing direction) a...
bool mAllDefaultSize
True if no billboards in this set have been resized - greater efficiency.
Abstract class defining the interface all renderable objects must implement.
Quaternion mCamQ
Camera orientation in billboard space.
#define _OgreExport
Definition: OgrePlatform.h:257
Abstract class defining a movable object in a scene.
BillboardRotationType mRotationType
Rotation type of each billboard.
vector< Billboard * >::type BillboardPool
Vector3 mCommonUpVector
Common up-vector for billboards of type BBT_PERPENDICULAR_SELF and BBT_PERPENDICULAR_COMMON.
bool mAutoUpdate
Tell if vertex buffer should be update automatically.
unsigned short mNumVisibleBillboards
Number of visible billboards (will be == getNumBillboards if mCullIndividual == false) ...
BillboardOrigin mOriginType
Origin of each billboard.
Summary class collecting together vertex source information.
Implementation of a Quaternion, i.e.
static String AUTODETECT_RESOURCE_GROUP_NAME
Special resource group name which causes resource group to be automatically determined based on searc...
Class representing colour.
float Real
Software floating point type.
VertexData * mVertexData
The vertex position data for all billboards in this set.
Vector3 mCommonDirection
Common direction for billboards of type BBT_ORIENTED_COMMON and BBT_PERPENDICULAR_COMMON.
Class to manage the scene object rendering queue.
Rotate the billboard&#39;s vertices around their facing direction.
virtual void setBillboardsInWorldSpace(bool ws)
Sets whether billboards should be treated as being in world space.
Summary class collecting together index data source information.
BillboardOrigin
Enum covering what exactly a billboard&#39;s position means (center, top-left etc).
unsigned char uchar
In order to avoid finger-aches :)
Camera * mCurrentCamera
Current camera.
ActiveBillboardList mActiveBillboards
Active billboard list.
size_t mPoolSize
The number of billboard in the pool.
HardwareVertexBufferSharedPtr mMainBuf
Shortcut to main buffer (positions, colours, texture coords)
Billboards are perpendicular to a shared direction vector (used as Z axis, the facing direction) and ...
BillboardType mBillboardType
The type of billboard to render.
static const ColourValue White
BillboardRotationType
The rotation type of billboard.
Class encapsulating a standard 4x4 homogeneous matrix.
Definition: OgreMatrix4.h:78
Standard 3-dimensional vector.
Definition: OgreVector3.h:51
Vector3 sortDir
Direction to sort in.
Vector3 mCamDir
Camera direction in billboard space.
SortMode
Sort mode for billboard-set and particle-system.
Definition: OgreCommon.h:286
Shared pointer implementation used to share vertex buffers.
list< Billboard * >::type FreeBillboardList
bool mPointRendering
Use point rendering?
Vector3 sortPos
Position to sort in.
Visitor object that can be used to iterate over a collection of Renderable instances abstractly...
Standard point billboard (default), always faces the camera completely and is always upright...
vector< Ogre::FloatRect >::type TextureCoordSets
Vector3 mCamPos
Camera position in billboard space.
map< String, String >::type NameValuePairList
Name / value parameter pair (first = name, second = value)
Definition: OgreCommon.h:550
bool getAutoUpdate(void) const
Return the auto update state of this billboard set.
virtual bool isPointRenderingEnabled(void) const
Returns whether point rendering is enabled.
_StringBase String
Billboards are oriented around a shared direction vector (used as Y axis) and only rotate around this...
bool mCullIndividual
Flag indicating whether each billboard should be culled separately (default: false) ...
MaterialPtr mMaterial
Pointer to the material to use.
void notifyBillboardDataChanged(void)
When billboard set is not auto updating its GPU buffer, the user is responsible to inform it about an...
TextureCoordSets mTextureCoords
BillboardPool mBillboardPool
Pool of billboard instances for use and reuse in the active billboard list.
AxisAlignedBox mAABB
Bounds of all billboards in this set.
A viewpoint from which the scene will be rendered.
Definition: OgreCamera.h:86
virtual void setUseAccurateFacing(bool acc)
Sets whether or not billboards should use an &#39;accurate&#39; facing model based on the vector from each bi...
Class for performing a radix sort (fast comparison-less sort based on byte value) on various standard...
Definition: OgreRadixSort.h:88
FreeBillboardList mFreeBillboards
Free billboard queue.
Factory object for creating BillboardSet instances.
bool mExternalData
Is external billboard data in use?
unsigned int uint32
Definition: OgrePlatform.h:359
Real mDefaultHeight
Default height of each billboard.
virtual bool getUseAccurateFacing(void) const
Gets whether or not billboards use an &#39;accurate&#39; facing model based on the vector from each billboard...
String mMaterialName
Name of the material to use.
bool mAccurateFacing
Use &#39;true&#39; billboard to cam position facing, rather than camera direcion.
float * mLockPtr
Locked pointer to buffer.
bool mBuffersCreated
Flag indicating whether the HW buffers have been created.
Billboards are oriented around their own direction vector (their own Y axis) and only rotate around t...
Real mDefaultWidth
Default width of each billboard.
Rotate the billboard&#39;s texture coordinates.
&#39;New&#39; rendering operation using vertex buffers.
A collection of billboards (faces which are always facing the given direction) with the same (default...
Interface definition for a factory class which produces a certain kind of MovableObject, and can be registered with Root in order to allow all clients to produce new instances of this object, integrated with the standard Ogre processing.
bool mSortingEnabled
Flag indicating whether the billboards has to be sorted.
BillboardType
The type of billboard to use.
A 3D box aligned with the x/y/z axes.
bool mBillboardDataChanged
True if the billboard data changed. Will cause vertex buffer update.
A billboard is a primitive which always faces the camera in every frame.
Definition: OgreBillboard.h:67
bool mAutoExtendPool
Flag indicating whether to autoextend pool.
IndexData * mIndexData
The vertex index data for all billboards in this set (1 set only)
unsigned short uint16
Definition: OgrePlatform.h:360
list< Billboard * >::type ActiveBillboardList

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Last modified Fri Dec 20 2013 11:13:42