dba239fe8d
A fileIO plugin can override custom file IO operations. As a small test, load files from a zipfile in memory. Default fileIO implementation is in examples/Utils/b3BulletDefaultFileIO.h Affects URDF, SDF, MJCF, Wavefront OBJ, STL, DAE, images.
74 lines
1.7 KiB
C++
74 lines
1.7 KiB
C++
#include "LoadMeshFromObj.h"
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#include "../../OpenGLWindow/GLInstanceGraphicsShape.h"
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#include <stdio.h> //fopen
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#include "Bullet3Common/b3AlignedObjectArray.h"
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#include <string>
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#include <vector>
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#include "Wavefront2GLInstanceGraphicsShape.h"
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#include "Bullet3Common/b3HashMap.h"
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struct CachedObjResult
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{
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std::string m_msg;
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std::vector<tinyobj::shape_t> m_shapes;
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};
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static b3HashMap<b3HashString, CachedObjResult> gCachedObjResults;
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static int gEnableFileCaching = 1;
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int b3IsFileCachingEnabled()
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{
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return gEnableFileCaching;
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}
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void b3EnableFileCaching(int enable)
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{
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gEnableFileCaching = enable;
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if (enable == 0)
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{
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gCachedObjResults.clear();
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}
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}
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std::string LoadFromCachedOrFromObj(
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std::vector<tinyobj::shape_t>& shapes, // [output]
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const char* filename,
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const char* mtl_basepath,
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struct CommonFileIOInterface* fileIO
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)
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{
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CachedObjResult* resultPtr = gCachedObjResults[filename];
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if (resultPtr)
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{
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const CachedObjResult& result = *resultPtr;
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shapes = result.m_shapes;
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return result.m_msg;
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}
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std::string err = tinyobj::LoadObj(shapes, filename, mtl_basepath,fileIO);
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CachedObjResult result;
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result.m_msg = err;
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result.m_shapes = shapes;
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if (gEnableFileCaching)
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{
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gCachedObjResults.insert(filename, result);
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}
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return err;
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}
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GLInstanceGraphicsShape* LoadMeshFromObj(const char* relativeFileName, const char* materialPrefixPath, struct CommonFileIOInterface* fileIO)
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{
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B3_PROFILE("LoadMeshFromObj");
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std::vector<tinyobj::shape_t> shapes;
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{
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B3_PROFILE("tinyobj::LoadObj2");
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std::string err = LoadFromCachedOrFromObj(shapes, relativeFileName, materialPrefixPath,fileIO);
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}
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{
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B3_PROFILE("btgCreateGraphicsShapeFromWavefrontObj");
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GLInstanceGraphicsShape* gfxShape = btgCreateGraphicsShapeFromWavefrontObj(shapes);
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return gfxShape;
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}
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}
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