nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: // Product:     OpenCTM
nuclear@14: // File:        internal.h
nuclear@14: // Description: Internal (private) declarations, types and function prototypes.
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: // Copyright (c) 2009-2010 Marcus Geelnard
nuclear@14: //
nuclear@14: // This software is provided 'as-is', without any express or implied
nuclear@14: // warranty. In no event will the authors be held liable for any damages
nuclear@14: // arising from the use of this software.
nuclear@14: //
nuclear@14: // Permission is granted to anyone to use this software for any purpose,
nuclear@14: // including commercial applications, and to alter it and redistribute it
nuclear@14: // freely, subject to the following restrictions:
nuclear@14: //
nuclear@14: //     1. The origin of this software must not be misrepresented; you must not
nuclear@14: //     claim that you wrote the original software. If you use this software
nuclear@14: //     in a product, an acknowledgment in the product documentation would be
nuclear@14: //     appreciated but is not required.
nuclear@14: //
nuclear@14: //     2. Altered source versions must be plainly marked as such, and must not
nuclear@14: //     be misrepresented as being the original software.
nuclear@14: //
nuclear@14: //     3. This notice may not be removed or altered from any source
nuclear@14: //     distribution.
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: 
nuclear@14: #ifndef __OPENCTM_INTERNAL_H_
nuclear@14: #define __OPENCTM_INTERNAL_H_
nuclear@14: 
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: // Constants
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: // OpenCTM file format version (v5).
nuclear@14: #define _CTM_FORMAT_VERSION  0x00000005
nuclear@14: 
nuclear@14: // Flags for the Mesh flags field of the file header
nuclear@14: #define _CTM_HAS_NORMALS_BIT 0x00000001
nuclear@14: 
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: // _CTMfloatmap - Internal representation of a floating point based vertex map
nuclear@14: // (used for UV maps and attribute maps).
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: typedef struct _CTMfloatmap_struct _CTMfloatmap;
nuclear@14: struct _CTMfloatmap_struct {
nuclear@14:   char * mName;         // Unique name
nuclear@14:   char * mFileName;     // File name reference (used only for UV maps)
nuclear@14:   CTMfloat mPrecision;  // Precision for this map
nuclear@14:   CTMfloat * mValues;   // Attribute/UV coordinate values (per vertex)
nuclear@14:   _CTMfloatmap * mNext; // Pointer to the next map in the list (linked list)
nuclear@14: };
nuclear@14: 
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: // _CTMcontext - Internal CTM context structure.
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: typedef struct {
nuclear@14:   // Context mode (import or export)
nuclear@14:   CTMenum mMode;
nuclear@14: 
nuclear@14:   // Vertices
nuclear@14:   CTMfloat * mVertices;
nuclear@14:   CTMuint mVertexCount;
nuclear@14: 
nuclear@14:   // Indices
nuclear@14:   CTMuint * mIndices;
nuclear@14:   CTMuint mTriangleCount;
nuclear@14: 
nuclear@14:   // Normals (optional)
nuclear@14:   CTMfloat * mNormals;
nuclear@14: 
nuclear@14:   // Multiple sets of UV coordinate maps (optional)
nuclear@14:   CTMuint mUVMapCount;
nuclear@14:   _CTMfloatmap * mUVMaps;
nuclear@14: 
nuclear@14:   // Multiple sets of custom vertex attribute maps (optional)
nuclear@14:   CTMuint mAttribMapCount;
nuclear@14:   _CTMfloatmap * mAttribMaps;
nuclear@14: 
nuclear@14:   // Last error code
nuclear@14:   CTMenum mError;
nuclear@14: 
nuclear@14:   // The selected compression method
nuclear@14:   CTMenum mMethod;
nuclear@14: 
nuclear@14:   // The selected compression level
nuclear@14:   CTMuint mCompressionLevel;
nuclear@14: 
nuclear@14:   // Vertex coordinate precision
nuclear@14:   CTMfloat mVertexPrecision;
nuclear@14: 
nuclear@14:   // Normal precision (angular + magnitude)
nuclear@14:   CTMfloat mNormalPrecision;
nuclear@14: 
nuclear@14:   // File comment
nuclear@14:   char * mFileComment;
nuclear@14: 
nuclear@14:   // Read() function pointer
nuclear@14:   CTMreadfn mReadFn;
nuclear@14: 
nuclear@14:   // Write() function pointer
nuclear@14:   CTMwritefn mWriteFn;
nuclear@14: 
nuclear@14:   // User data (for stream read/write - usually the stream handle)
nuclear@14:   void * mUserData;
nuclear@14: } _CTMcontext;
nuclear@14: 
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: // Macros
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: #define FOURCC(str) (((CTMuint) str[0]) | (((CTMuint) str[1]) << 8) | \
nuclear@14:                     (((CTMuint) str[2]) << 16) | (((CTMuint) str[3]) << 24))
nuclear@14: 
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: // Funcion prototypes for stream.c
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: CTMuint _ctmStreamRead(_CTMcontext * self, void * aBuf, CTMuint aCount);
nuclear@14: CTMuint _ctmStreamWrite(_CTMcontext * self, void * aBuf, CTMuint aCount);
nuclear@14: CTMuint _ctmStreamReadUINT(_CTMcontext * self);
nuclear@14: void _ctmStreamWriteUINT(_CTMcontext * self, CTMuint aValue);
nuclear@14: CTMfloat _ctmStreamReadFLOAT(_CTMcontext * self);
nuclear@14: void _ctmStreamWriteFLOAT(_CTMcontext * self, CTMfloat aValue);
nuclear@14: void _ctmStreamReadSTRING(_CTMcontext * self, char ** aValue);
nuclear@14: void _ctmStreamWriteSTRING(_CTMcontext * self, const char * aValue);
nuclear@14: int _ctmStreamReadPackedInts(_CTMcontext * self, CTMint * aData, CTMuint aCount, CTMuint aSize, CTMint aSignedInts);
nuclear@14: int _ctmStreamWritePackedInts(_CTMcontext * self, CTMint * aData, CTMuint aCount, CTMuint aSize, CTMint aSignedInts);
nuclear@14: int _ctmStreamReadPackedFloats(_CTMcontext * self, CTMfloat * aData, CTMuint aCount, CTMuint aSize);
nuclear@14: int _ctmStreamWritePackedFloats(_CTMcontext * self, CTMfloat * aData, CTMuint aCount, CTMuint aSize);
nuclear@14: 
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: // Funcion prototypes for compressRAW.c
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: int _ctmCompressMesh_RAW(_CTMcontext * self);
nuclear@14: int _ctmUncompressMesh_RAW(_CTMcontext * self);
nuclear@14: 
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: // Funcion prototypes for compressMG1.c
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: int _ctmCompressMesh_MG1(_CTMcontext * self);
nuclear@14: int _ctmUncompressMesh_MG1(_CTMcontext * self);
nuclear@14: 
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: // Funcion prototypes for compressMG2.c
nuclear@14: //-----------------------------------------------------------------------------
nuclear@14: int _ctmCompressMesh_MG2(_CTMcontext * self);
nuclear@14: int _ctmUncompressMesh_MG2(_CTMcontext * self);
nuclear@14: 
nuclear@14: #endif // __OPENCTM_INTERNAL_H_