Irrlicht 3D Engine: CIndexBuffer.h Source File

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CIndexBuffer.h
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    00001 // Copyright (C) 2008-2012 Nikolaus Gebhardt
    00002 // This file is part of the "Irrlicht Engine".
    00003 // For conditions of distribution and use, see copyright notice in irrlicht.h
    00004
    00005 #ifndef __C_INDEX_BUFFER_H_INCLUDED__
    00006 #define __C_INDEX_BUFFER_H_INCLUDED__
    00007
    00008 #include "IIndexBuffer.h"
    00009
    00010 namespace irr
    00011 {
    00012 namespace scene
    00013 {
    00014
    00015     class CIndexBuffer : public IIndexBuffer
    00016     {
    00017
    00018         class IIndexList
    00019         {
    00020         public:
    00021             virtual ~IIndexList(){};
    00022
    00023             virtual u32 stride() const =0;
    00024             virtual u32 size() const =0;
    00025             virtual void push_back(const u32 &element) =0;
    00026             virtual u32 operator [](u32 index) const =0;
    00027             virtual u32 getLast() =0;
    00028             virtual void setValue(u32 index, u32 value) =0;
    00029             virtual void set_used(u32 usedNow) =0;
    00030             virtual void reallocate(u32 new_size) =0;
    00031             virtual u32 allocated_size() const =0;
    00032             virtual void* pointer() =0;
    00033             virtual video::E_INDEX_TYPE getType() const =0;
    00034         };
    00035
    00036         template <class T>
    00037         class CSpecificIndexList : public IIndexList
    00038         {
    00039         public:
    00040             core::array<T> Indices;
    00041
    00042             virtual u32 stride() const {return sizeof(T);}
    00043
    00044             virtual u32 size() const {return Indices.size();}
    00045
    00046             virtual void push_back(const u32 &element)
    00047             {
    00048                 // push const ref due to compiler problem with gcc 4.6, big endian
    00049                 Indices.push_back((const T&)element);
    00050             }
    00051
    00052             virtual u32 operator [](u32 index) const
    00053             {
    00054                 return (u32)(Indices[index]);
    00055             }
    00056
    00057             virtual u32 getLast() {return (u32)Indices.getLast();}
    00058
    00059             virtual void setValue(u32 index, u32 value)
    00060             {
    00061                 Indices[index]=(T)value;
    00062             }
    00063
    00064             virtual void set_used(u32 usedNow)
    00065             {
    00066                 Indices.set_used(usedNow);
    00067             }
    00068
    00069             virtual void reallocate(u32 new_size)
    00070             {
    00071                 Indices.reallocate(new_size);
    00072             }
    00073
    00074             virtual u32 allocated_size() const
    00075             {
    00076                 return Indices.allocated_size();
    00077             }
    00078
    00079             virtual void* pointer() {return Indices.pointer();}
    00080
    00081             virtual video::E_INDEX_TYPE getType() const
    00082             {
    00083                 if (sizeof(T)==sizeof(u16))
    00084                     return video::EIT_16BIT;
    00085                 else
    00086                     return video::EIT_32BIT;
    00087             }
    00088         };
    00089
    00090     public:
    00091         IIndexList *Indices;
    00092
    00093         CIndexBuffer(video::E_INDEX_TYPE IndexType) :Indices(0), MappingHint(EHM_NEVER), ChangedID(1)
    00094         {
    00095             setType(IndexType);
    00096         }
    00097
    00098         CIndexBuffer(const IIndexBuffer &IndexBufferCopy) :Indices(0), MappingHint(EHM_NEVER), ChangedID(1)
    00099         {
    00100             setType(IndexBufferCopy.getType());
    00101             reallocate(IndexBufferCopy.size());
    00102
    00103             for (u32 n=0;n<IndexBufferCopy.size();++n)
    00104                 push_back(IndexBufferCopy[n]);
    00105         }
    00106
    00107         virtual ~CIndexBuffer()
    00108         {
    00109             delete Indices;
    00110         }
    00111
    00112         //virtual void setType(video::E_INDEX_TYPE IndexType);
    00113         virtual void setType(video::E_INDEX_TYPE IndexType)
    00114         {
    00115             IIndexList *NewIndices=0;
    00116
    00117             switch (IndexType)
    00118             {
    00119                 case video::EIT_16BIT:
    00120                 {
    00121                     NewIndices=new CSpecificIndexList<u16>;
    00122                     break;
    00123                 }
    00124                 case video::EIT_32BIT:
    00125                 {
    00126                     NewIndices=new CSpecificIndexList<u32>;
    00127                     break;
    00128                 }
    00129             }
    00130
    00131             if (Indices)
    00132             {
    00133                 NewIndices->reallocate( Indices->size() );
    00134
    00135                 for(u32 n=0;n<Indices->size();++n)
    00136                     NewIndices->push_back((*Indices)[n]);
    00137
    00138                 delete Indices;
    00139             }
    00140
    00141             Indices=NewIndices;
    00142         }
    00143
    00144         virtual void* getData() {return Indices->pointer();}
    00145
    00146         virtual video::E_INDEX_TYPE getType() const {return Indices->getType();}
    00147
    00148         virtual u32 stride() const {return Indices->stride();}
    00149
    00150         virtual u32 size() const
    00151         {
    00152             return Indices->size();
    00153         }
    00154
    00155         virtual void push_back(const u32 &element)
    00156         {
    00157             Indices->push_back(element);
    00158         }
    00159
    00160         virtual u32 operator [](u32 index) const
    00161         {
    00162             return (*Indices)[index];
    00163         }
    00164
    00165         virtual u32 getLast()
    00166         {
    00167             return Indices->getLast();
    00168         }
    00169
    00170         virtual void setValue(u32 index, u32 value)
    00171         {
    00172             Indices->setValue(index, value);
    00173         }
    00174
    00175         virtual void set_used(u32 usedNow)
    00176         {
    00177             Indices->set_used(usedNow);
    00178         }
    00179
    00180         virtual void reallocate(u32 new_size)
    00181         {
    00182             Indices->reallocate(new_size);
    00183         }
    00184
    00185         virtual u32 allocated_size() const
    00186         {
    00187             return Indices->allocated_size();
    00188         }
    00189
    00190         virtual void* pointer()
    00191         {
    00192             return Indices->pointer();
    00193         }
    00194
    00196         virtual E_HARDWARE_MAPPING getHardwareMappingHint() const
    00197         {
    00198             return MappingHint;
    00199         }
    00200
    00202         virtual void setHardwareMappingHint( E_HARDWARE_MAPPING NewMappingHint )
    00203         {
    00204             MappingHint=NewMappingHint;
    00205         }
    00206
    00208         virtual void setDirty()
    00209         {
    00210             ++ChangedID;
    00211         }
    00212
    00214
    00215         virtual u32 getChangedID() const {return ChangedID;}
    00216
    00217         E_HARDWARE_MAPPING MappingHint;
    00218         u32 ChangedID;
    00219     };
    00220
    00221
    00222 } // end namespace scene
    00223 } // end namespace irr
    00224
    00225 #endif
    00226