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#include "LoadMeshFromObj.h"
#include "../../OpenGLWindow/GLInstanceGraphicsShape.h"
#include <stdio.h> //fopen
#include "Bullet3Common/b3AlignedObjectArray.h"
#include <string>
#include <vector>
#include "Wavefront2GLInstanceGraphicsShape.h"
#include "Bullet3Common/b3HashMap.h"
struct CachedObjResult
{
std::string m_msg;
std::vector<tinyobj::shape_t> m_shapes;
tinyobj::attrib_t m_attribute;
};
static b3HashMap<b3HashString, CachedObjResult> gCachedObjResults;
static int gEnableFileCaching = 1;
int b3IsFileCachingEnabled()
{
return gEnableFileCaching;
}
void b3EnableFileCaching(int enable)
{
gEnableFileCaching = enable;
if (enable == 0)
{
gCachedObjResults.clear();
}
}
std::string LoadFromCachedOrFromObj(
tinyobj::attrib_t& attribute,
std::vector<tinyobj::shape_t>& shapes, // [output]
const char* filename,
const char* mtl_basepath,
struct CommonFileIOInterface* fileIO)
{
CachedObjResult* resultPtr = gCachedObjResults[filename];
if (resultPtr)
{
const CachedObjResult& result = *resultPtr;
shapes = result.m_shapes;
attribute = result.m_attribute;
return result.m_msg;
}
std::string err = tinyobj::LoadObj(attribute, shapes, filename, mtl_basepath, fileIO);
CachedObjResult result;
result.m_msg = err;
result.m_shapes = shapes;
result.m_attribute = attribute;
if (gEnableFileCaching)
{
gCachedObjResults.insert(filename, result);
}
return err;
}
GLInstanceGraphicsShape* LoadMeshFromObj(const char* relativeFileName, const char* materialPrefixPath, struct CommonFileIOInterface* fileIO)
{
B3_PROFILE("LoadMeshFromObj");
std::vector<tinyobj::shape_t> shapes;
tinyobj::attrib_t attribute;
{
B3_PROFILE("tinyobj::LoadObj2");
std::string err = LoadFromCachedOrFromObj(attribute, shapes, relativeFileName, materialPrefixPath, fileIO);
}
{
B3_PROFILE("btgCreateGraphicsShapeFromWavefrontObj");
GLInstanceGraphicsShape* gfxShape = btgCreateGraphicsShapeFromWavefrontObj(attribute, shapes);
return gfxShape;
}
}
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