FBXparser.cpp

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#include "FBXParser.h"

using namespace std;

FBXParser::FBXParser()
    : m_version(7400)
{
}

FBXParser::~FBXParser()
{

}

bool FBXParser::checkHeader(std::ifstream& input) 
{
    string signature("Kaydara FBX Binary  ");
    string buffer;
    buffer.resize(signature.length());
    input.read(const_cast<char*>(buffer.c_str()), signature.length());
    if (buffer.compare(signature)) return false;
    
    unsigned char c;
    input >> c;
    if (c != 0x00) return false;
    input >> c;
    if (c != 0x1A) return false;
    input >> c;
    if (c != 0x00) return false;
    return true;
}

uint32_t FBXParser::getVersion(std::ifstream& input)
{
    uint32_t version = 0;
    input.read((char *)&version, sizeof(uint32_t));
    return version;
}

uint32_t FBXParser::readNode(std::ifstream& input, uint32_t offset)
{
    uint32_t bytes = 0;
    uint32_t endOffset;
    uint32_t numProperties;
    uint32_t propertyListLength;
    uint8_t nameLength;
    string name;

    input.read((char*)&endOffset, sizeof(uint32_t));
    input.read((char*)&numProperties, sizeof(uint32_t));
    input.read((char*)&propertyListLength, sizeof(uint32_t));
    input.read((char*)&nameLength, sizeof(uint8_t));
    name.resize(nameLength + 1);
    name[nameLength + 1] = 0;
    input.read((char*)name.c_str(), nameLength);
    bytes += 13 + nameLength;

    return bytes;
}

bool FBXParser::loadFBX(const std::string& fileName, ulonglong& n_points, Vertex** vertices)
{
    ifstream file(fileName, ios::binary);

    if (!file.is_open()) {
        cerr << "Failed to open file." << endl;
        return false;
    }
    if (!checkHeader(file)) {
        cerr << "Not a FBX file." << endl;
        return false;
    }
    m_version = getVersion(file);
    uint32_t maxVersion = 7400;
    if (m_version > maxVersion) {
        cerr << "Unsupported FBX version " << m_version << endl;
        return false;
    }

    uint32_t start_offset = 27;


    return true;
}

FBXNode::FBXNode()
{

}

FBXNode::~FBXNode()
{

}

FBXProperty::FBXProperty()
{

}

FBXProperty::~FBXProperty()
{

}