485 lines
16 KiB
C++
485 lines
16 KiB
C++
/*
|
|
Open Asset Import Library (assimp)
|
|
----------------------------------------------------------------------
|
|
|
|
Copyright (c) 2006-2012, assimp team
|
|
All rights reserved.
|
|
|
|
Redistribution and use of this software in source and binary forms,
|
|
with or without modification, are permitted provided that the
|
|
following conditions are met:
|
|
|
|
* Redistributions of source code must retain the above
|
|
copyright notice, this list of conditions and the
|
|
following disclaimer.
|
|
|
|
* Redistributions in binary form must reproduce the above
|
|
copyright notice, this list of conditions and the
|
|
following disclaimer in the documentation and/or other
|
|
materials provided with the distribution.
|
|
|
|
* Neither the name of the assimp team, nor the names of its
|
|
contributors may be used to endorse or promote products
|
|
derived from this software without specific prior
|
|
written permission of the assimp team.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
----------------------------------------------------------------------
|
|
*/
|
|
|
|
/** @file Declaration of the LWO importer class. */
|
|
#ifndef AI_LWOLOADER_H_INCLUDED
|
|
#define AI_LWOLOADER_H_INCLUDED
|
|
|
|
#include "../include/assimp/types.h"
|
|
#include "../include/assimp/DefaultLogger.hpp"
|
|
|
|
#include "LWOFileData.h"
|
|
#include "BaseImporter.h"
|
|
|
|
struct aiTexture;
|
|
struct aiNode;
|
|
|
|
namespace Assimp {
|
|
using namespace LWO;
|
|
|
|
// ---------------------------------------------------------------------------
|
|
/** Class to load LWO files.
|
|
*
|
|
* @note Methods named "xxxLWO2[xxx]" are used with the newer LWO2 format.
|
|
* Methods named "xxxLWOB[xxx]" are used with the older LWOB format.
|
|
* Methods named "xxxLWO[xxx]" are used with both formats.
|
|
* Methods named "xxx" are used to preprocess the loaded data -
|
|
* they aren't specific to one format version
|
|
*/
|
|
// ---------------------------------------------------------------------------
|
|
class LWOImporter : public BaseImporter
|
|
{
|
|
public:
|
|
LWOImporter();
|
|
~LWOImporter();
|
|
|
|
|
|
public:
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Returns whether the class can handle the format of the given file.
|
|
* See BaseImporter::CanRead() for details.
|
|
*/
|
|
bool CanRead( const std::string& pFile, IOSystem* pIOHandler,
|
|
bool checkSig) const;
|
|
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Called prior to ReadFile().
|
|
* The function is a request to the importer to update its configuration
|
|
* basing on the Importer's configuration property list.
|
|
*/
|
|
void SetupProperties(const Importer* pImp);
|
|
|
|
protected:
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Called by Importer::GetExtensionList() for each loaded importer.
|
|
* See BaseImporter::GetExtensionList() for details
|
|
*/
|
|
void GetExtensionList(std::set<std::string>& extensions)
|
|
{
|
|
extensions.insert("lxo");
|
|
extensions.insert("lwo");
|
|
}
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Imports the given file into the given scene structure.
|
|
* See BaseImporter::InternReadFile() for details
|
|
*/
|
|
void InternReadFile( const std::string& pFile, aiScene* pScene,
|
|
IOSystem* pIOHandler);
|
|
|
|
private:
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Loads a LWO file in the older LWOB format (LW < 6)
|
|
*/
|
|
void LoadLWOBFile();
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Loads a LWO file in the newer LWO2 format (LW >= 6)
|
|
*/
|
|
void LoadLWO2File();
|
|
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Parsing functions used for all file format versions
|
|
*/
|
|
inline void GetS0(std::string& out,unsigned int max);
|
|
inline float GetF4();
|
|
inline uint32_t GetU4();
|
|
inline uint16_t GetU2();
|
|
inline uint8_t GetU1();
|
|
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Loads a surface chunk from an LWOB file
|
|
* @param size Maximum size to be read, in bytes.
|
|
*/
|
|
void LoadLWOBSurface(unsigned int size);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Loads a surface chunk from an LWO2 file
|
|
* @param size Maximum size to be read, in bytes.
|
|
*/
|
|
void LoadLWO2Surface(unsigned int size);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Loads a texture block from a LWO2 file.
|
|
* @param size Maximum size to be read, in bytes.
|
|
* @param head Header of the SUF.BLOK header
|
|
*/
|
|
void LoadLWO2TextureBlock(LE_NCONST IFF::SubChunkHeader* head,
|
|
unsigned int size );
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Loads a shader block from a LWO2 file.
|
|
* @param size Maximum size to be read, in bytes.
|
|
* @param head Header of the SUF.BLOK header
|
|
*/
|
|
void LoadLWO2ShaderBlock(LE_NCONST IFF::SubChunkHeader* head,
|
|
unsigned int size );
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Loads an image map from a LWO2 file
|
|
* @param size Maximum size to be read, in bytes.
|
|
* @param tex Texture object to be filled
|
|
*/
|
|
void LoadLWO2ImageMap(unsigned int size, LWO::Texture& tex );
|
|
void LoadLWO2Gradient(unsigned int size, LWO::Texture& tex );
|
|
void LoadLWO2Procedural(unsigned int size, LWO::Texture& tex );
|
|
|
|
// loads the header - used by thethree functions above
|
|
void LoadLWO2TextureHeader(unsigned int size, LWO::Texture& tex );
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Loads the LWO tag list from the file
|
|
* @param size Maximum size to be read, in bytes.
|
|
*/
|
|
void LoadLWOTags(unsigned int size);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Load polygons from a POLS chunk
|
|
* @param length Size of the chunk
|
|
*/
|
|
void LoadLWO2Polygons(unsigned int length);
|
|
void LoadLWOBPolygons(unsigned int length);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Load polygon tags from a PTAG chunk
|
|
* @param length Size of the chunk
|
|
*/
|
|
void LoadLWO2PolygonTags(unsigned int length);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Load a vertex map from a VMAP/VMAD chunk
|
|
* @param length Size of the chunk
|
|
* @param perPoly Operate on per-polygon base?
|
|
*/
|
|
void LoadLWO2VertexMap(unsigned int length, bool perPoly);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Load polygons from a PNTS chunk
|
|
* @param length Size of the chunk
|
|
*/
|
|
void LoadLWOPoints(unsigned int length);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Load a clip from a CLIP chunk
|
|
* @param length Size of the chunk
|
|
*/
|
|
void LoadLWO2Clip(unsigned int length);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Load an envelope from an EVL chunk
|
|
* @param length Size of the chunk
|
|
*/
|
|
void LoadLWO2Envelope(unsigned int length);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Count vertices and faces in a LWOB/LWO2 file
|
|
*/
|
|
void CountVertsAndFacesLWO2(unsigned int& verts,
|
|
unsigned int& faces,
|
|
uint16_t*& cursor,
|
|
const uint16_t* const end,
|
|
unsigned int max = UINT_MAX);
|
|
|
|
void CountVertsAndFacesLWOB(unsigned int& verts,
|
|
unsigned int& faces,
|
|
LE_NCONST uint16_t*& cursor,
|
|
const uint16_t* const end,
|
|
unsigned int max = UINT_MAX);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Read vertices and faces in a LWOB/LWO2 file
|
|
*/
|
|
void CopyFaceIndicesLWO2(LWO::FaceList::iterator& it,
|
|
uint16_t*& cursor,
|
|
const uint16_t* const end);
|
|
|
|
// -------------------------------------------------------------------
|
|
void CopyFaceIndicesLWOB(LWO::FaceList::iterator& it,
|
|
LE_NCONST uint16_t*& cursor,
|
|
const uint16_t* const end,
|
|
unsigned int max = UINT_MAX);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Resolve the tag and surface lists that have been loaded.
|
|
* Generates the mMapping table.
|
|
*/
|
|
void ResolveTags();
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Resolve the clip list that has been loaded.
|
|
* Replaces clip references with real clips.
|
|
*/
|
|
void ResolveClips();
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Add a texture list to an output material description.
|
|
*
|
|
* @param pcMat Output material
|
|
* @param in Input texture list
|
|
* @param type Type identifier of the texture list
|
|
*/
|
|
bool HandleTextures(aiMaterial* pcMat, const TextureList& in,
|
|
aiTextureType type);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Adjust a texture path
|
|
*/
|
|
void AdjustTexturePath(std::string& out);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Convert a LWO surface description to an ASSIMP material
|
|
*/
|
|
void ConvertMaterial(const LWO::Surface& surf,aiMaterial* pcMat);
|
|
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Get a list of all UV/VC channels required by a specific surface.
|
|
*
|
|
* @param surf Working surface
|
|
* @param layer Working layer
|
|
* @param out Output list. The members are indices into the
|
|
* UV/VC channel lists of the layer
|
|
*/
|
|
void FindUVChannels(/*const*/ LWO::Surface& surf,
|
|
LWO::SortedRep& sorted,
|
|
/*const*/ LWO::Layer& layer,
|
|
unsigned int out[AI_MAX_NUMBER_OF_TEXTURECOORDS]);
|
|
|
|
// -------------------------------------------------------------------
|
|
char FindUVChannels(LWO::TextureList& list,
|
|
LWO::Layer& layer,LWO::UVChannel& uv, unsigned int next);
|
|
|
|
// -------------------------------------------------------------------
|
|
void FindVCChannels(const LWO::Surface& surf,
|
|
LWO::SortedRep& sorted,
|
|
const LWO::Layer& layer,
|
|
unsigned int out[AI_MAX_NUMBER_OF_COLOR_SETS]);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Generate the final node graph
|
|
* Unused nodes are deleted.
|
|
* @param apcNodes Flat list of nodes
|
|
*/
|
|
void GenerateNodeGraph(std::map<uint16_t,aiNode*>& apcNodes);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Add children to a node
|
|
* @param node Node to become a father
|
|
* @param parent Index of the node
|
|
* @param apcNodes Flat list of nodes - used nodes are set to NULL.
|
|
*/
|
|
void AddChildren(aiNode* node, uint16_t parent,
|
|
std::vector<aiNode*>& apcNodes);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Read a variable sized integer
|
|
* @param inout Input and output buffer
|
|
*/
|
|
int ReadVSizedIntLWO2(uint8_t*& inout);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Assign a value from a VMAP to a vertex and all vertices
|
|
* attached to it.
|
|
* @param base VMAP destination data
|
|
* @param numRead Number of float's to be read
|
|
* @param idx Absolute index of the first vertex
|
|
* @param data Value of the VMAP to be assigned - read numRead
|
|
* floats from this array.
|
|
*/
|
|
void DoRecursiveVMAPAssignment(VMapEntry* base, unsigned int numRead,
|
|
unsigned int idx, float* data);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Compute normal vectors for a mesh
|
|
* @param mesh Input mesh
|
|
* @param smoothingGroups Smoothing-groups-per-face array
|
|
* @param surface Surface for the mesh
|
|
*/
|
|
void ComputeNormals(aiMesh* mesh, const std::vector<unsigned int>& smoothingGroups,
|
|
const LWO::Surface& surface);
|
|
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Setup a new texture after the corresponding chunk was
|
|
* encountered in the file.
|
|
* @param list Texture list
|
|
* @param size Maximum number of bytes to be read
|
|
* @return Pointer to new texture
|
|
*/
|
|
LWO::Texture* SetupNewTextureLWOB(LWO::TextureList& list,
|
|
unsigned int size);
|
|
|
|
protected:
|
|
|
|
/** true if the file is a LWO2 file*/
|
|
bool mIsLWO2;
|
|
|
|
/** true if the file is a LXOB file*/
|
|
bool mIsLXOB;
|
|
|
|
/** Temporary list of layers from the file */
|
|
LayerList* mLayers;
|
|
|
|
/** Pointer to the current layer */
|
|
LWO::Layer* mCurLayer;
|
|
|
|
/** Temporary tag list from the file */
|
|
TagList* mTags;
|
|
|
|
/** Mapping table to convert from tag to surface indices.
|
|
UINT_MAX indicates that a no corresponding surface is available */
|
|
TagMappingTable* mMapping;
|
|
|
|
/** Temporary surface list from the file */
|
|
SurfaceList* mSurfaces;
|
|
|
|
/** Temporary clip list from the file */
|
|
ClipList mClips;
|
|
|
|
/** Temporary envelope list from the file */
|
|
EnvelopeList mEnvelopes;
|
|
|
|
/** file buffer */
|
|
uint8_t* mFileBuffer;
|
|
|
|
/** Size of the file, in bytes */
|
|
unsigned int fileSize;
|
|
|
|
/** Output scene */
|
|
aiScene* pScene;
|
|
|
|
/** Configuration option: speed flag set? */
|
|
bool configSpeedFlag;
|
|
|
|
/** Configuration option: index of layer to be loaded */
|
|
unsigned int configLayerIndex;
|
|
|
|
/** Configuration option: name of layer to be loaded */
|
|
std::string configLayerName;
|
|
|
|
/** True if we have a named layer */
|
|
bool hasNamedLayer;
|
|
};
|
|
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
inline float LWOImporter::GetF4()
|
|
{
|
|
float f = *((float*)mFileBuffer);mFileBuffer += 4;
|
|
AI_LSWAP4(f);
|
|
return f;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
inline uint32_t LWOImporter::GetU4()
|
|
{
|
|
uint32_t f = *((uint32_t*)mFileBuffer);mFileBuffer += 4;
|
|
AI_LSWAP4(f);
|
|
return f;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
inline uint16_t LWOImporter::GetU2()
|
|
{
|
|
uint16_t f = *((uint16_t*)mFileBuffer);mFileBuffer += 2;
|
|
AI_LSWAP2(f);
|
|
return f;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
inline uint8_t LWOImporter::GetU1()
|
|
{
|
|
return *mFileBuffer++;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
inline int LWOImporter::ReadVSizedIntLWO2(uint8_t*& inout)
|
|
{
|
|
int i;
|
|
int c = *inout;inout++;
|
|
if(c != 0xFF)
|
|
{
|
|
i = c << 8;
|
|
c = *inout;inout++;
|
|
i |= c;
|
|
}
|
|
else
|
|
{
|
|
c = *inout;inout++;
|
|
i = c << 16;
|
|
c = *inout;inout++;
|
|
i |= c << 8;
|
|
c = *inout;inout++;
|
|
i |= c;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
inline void LWOImporter::GetS0(std::string& out,unsigned int max)
|
|
{
|
|
unsigned int iCursor = 0;
|
|
const char*sz = (const char*)mFileBuffer;
|
|
while (*mFileBuffer)
|
|
{
|
|
if (++iCursor > max)
|
|
{
|
|
DefaultLogger::get()->warn("LWO: Invalid file, string is is too long");
|
|
break;
|
|
}
|
|
++mFileBuffer;
|
|
}
|
|
size_t len = (size_t) ((const char*)mFileBuffer-sz);
|
|
out = std::string(sz,len);
|
|
mFileBuffer += (len&0x1 ? 1 : 2);
|
|
}
|
|
|
|
|
|
|
|
} // end of namespace Assimp
|
|
|
|
#endif // AI_LWOIMPORTER_H_INCLUDED
|