JtReader.cpp

#include "JtReader.h"

#include <iostream>
#include <fstream>
#include <vector>
#include <assert.h>
#include <stdint.h>


#include "TOC_Entry.h"
#include "GUID.h"
#include "UChar.h"
#include "I32.h"
#include "TOC_Entry.h"
#include "LodHandler.h"
#include "Segment_Header.h"
#include "Element_Header.h"


using namespace std;


const GUID JtReader::TriStripSetShapeLODElement_ID(0x10dd10ab, 0x2ac8, 0x11d1, 0x9b, 0x6b, 0x0, 0x80, 0xc7, 0xbb, 0x59, 0x97);

JtReader::JtReader()
{
}


JtReader::~JtReader()
{
}

void JtReader::setFile(const std::string fileName)
{
	this->_fileName = fileName;
}

const std::vector<TOC_Entry>& JtReader::readToc()
{
	ifstream strm;

	strm.open(_fileName, ios::binary);

	if (!strm)
		throw "cannot open file";


	Context cont(strm);

	char headerString[80];
	strm.read(headerString, 80);

	UChar Byte_Order(cont);
	I32 Empty_Field(cont);
	I32 TOC_Offset(cont);

	GUID LSG_Segment_ID(cont);


	cont.Strm.seekg((int32_t)TOC_Offset);
	
	I32 Entry_Count(cont);
	
    TocEntries.resize(Entry_Count);

	for (std::vector<TOC_Entry>::iterator i = TocEntries.begin(); i != TocEntries.end(); ++i)
		i->read(cont);

	return TocEntries;


}

void JtReader::readLodSegment(const TOC_Entry& toc, LodHandler& /*handler*/)
{
	std::ifstream strm;
	strm.open(_fileName, ios::binary);

	if (!strm) throw "cannot open file";

	strm.seekg((int32_t)toc.Segment_Offset);

	Context cont(strm);

	
	// check if called with the right Toc
	assert(toc.getSegmentType() == 7);

	// read the segment header
	Segment_Header header(cont);

	// read the non zip Element header
	Element_Header eHeader(cont, false);

	if ( eHeader.Object_Type_ID != TriStripSetShapeLODElement_ID)
		return;

	
}