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# iengine/shadows.h

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    00001 /*
    00002     Crystal Space 3D engine
    00003     Copyright (C) 2001 by Jorrit Tyberghein
    00004
    00005     This library is free software; you can redistribute it and/or
    00006     modify it under the terms of the GNU Library General Public
    00007     License as published by the Free Software Foundation; either
    00008     version 2 of the License, or (at your option) any later version.
    00009
    00010     This library is distributed in the hope that it will be useful,
    00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
    00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00013     Library General Public License for more details.
    00014
    00015     You should have received a copy of the GNU Library General Public
    00016     License along with this library; if not, write to the Free
    00017     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    00018 */
    00019
    00020 #ifndef __CS_IENGINE_SHADOWS_H__
    00021 #define __CS_IENGINE_SHADOWS_H__
    00022
    00030 #include "csutil/scf.h"
    00031
    00032 struct iShadowBlock;
    00033 struct iShadowBlockList;
    00034
    00035 class csBox3;
    00036 class csFrustum;
    00037 class csPlane3;
    00038 class csTransform;
    00039 class csVector3;
    00040
    00045 struct iShadowIterator : public virtual iBase
    00046 {
    00047   SCF_INTERFACE(iShadowIterator, 2,0,0);
    00049   virtual void Reset () = 0;
    00051   virtual bool HasNext () = 0;
    00053   virtual csFrustum* Next () = 0;
    00055   virtual void* GetUserData () = 0;
    00057   virtual bool IsRelevant () = 0;
    00059   virtual void MarkRelevant (bool rel) = 0;
    00061   virtual void DeleteCurrent () = 0;
    00063   virtual iShadowBlock* GetCurrentShadowBlock () = 0;
    00065   virtual iShadowBlock* GetNextShadowBlock () = 0;
    00066 };
    00067
    00072 struct iShadowBlock : public virtual iBase
    00073 {
    00074   SCF_INTERFACE(iShadowBlock,2,0,0);
    00076   virtual iShadowIterator* GetShadowIterator (bool reverse = false) = 0;
    00078   virtual void DeleteShadows () = 0;
    00079
    00086   virtual void AddRelevantShadows (iShadowBlock* source,
    00087     csTransform* trans = 0) = 0;
    00088
    00094   virtual void AddRelevantShadows (iShadowBlockList* source) = 0;
    00095
    00101   virtual void AddAllShadows (iShadowBlockList* source) = 0;
    00102
    00108   virtual void AddUniqueRelevantShadows (iShadowBlockList* source) = 0;
    00109
    00115   virtual csFrustum* AddShadow (const csVector3& origin, void* userData,
    00116     int num_verts, csPlane3& backplane) = 0;
    00117
    00119   virtual void UnlinkShadow (int idx) = 0;
    00120
    00122   virtual int GetShadowCount () = 0;
    00123
    00125   virtual csFrustum* GetShadow (int idx) = 0;
    00126
    00130   virtual void Transform (csTransform* trans) = 0;
    00131
    00133   virtual const csBox3& GetBoundingBox () = 0;
    00134 };
    00135
    00140 struct iShadowBlockList : public virtual iBase
    00141 {
    00142   SCF_INTERFACE(iShadowBlockList,2,0,0);
    00144   virtual iShadowIterator* GetShadowIterator (bool reverse = false) = 0;
    00151   virtual iShadowIterator* GetShadowIterator (
    00152     const csBox3& bbox, bool reverse = false) = 0;
    00153
    00155   virtual iShadowBlock* NewShadowBlock (int num_shadows = 30) = 0;
    00156
    00158   virtual iShadowBlock* GetFirstShadowBlock () = 0;
    00160   virtual iShadowBlock* GetLastShadowBlock () = 0;
    00162   virtual iShadowBlock* GetNextShadowBlock (iShadowBlock* s) = 0;
    00164   virtual iShadowBlock* GetPreviousShadowBlock (iShadowBlock* s) = 0;
    00166   virtual void RemoveLastShadowBlock () = 0;
    00168   virtual void DeleteAllShadows () = 0;
    00169
    00176   virtual uint32 MarkNewRegion () = 0;
    00177
    00182   virtual void RestoreRegion (uint32 prev) = 0;
    00183
    00188   virtual bool FromCurrentRegion (iShadowBlock* block) = 0;
    00189 };
    00190
    00193 #endif // __CS_IENGINE_SHADOWS_H__
    00194