assimp/code/AssetLib/AMF/AMFImporter.cpp

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/// \file AMFImporter.cpp
/// \brief AMF-format files importer for Assimp: main algorithm implementation.
/// \date 2016
/// \author smal.root@gmail.com

#ifndef ASSIMP_BUILD_NO_AMF_IMPORTER

// Header files, Assimp.
#include "AMFImporter.hpp"
#include "AMFImporter_Macro.hpp"

#include <assimp/DefaultIOSystem.h>
#include <assimp/fast_atof.h>

// Header files, stdlib.
#include <memory>

namespace Assimp {

/// \var aiImporterDesc AMFImporter::Description
/// Conastant which hold importer description
const aiImporterDesc AMFImporter::Description = {
    "Additive manufacturing file format(AMF) Importer",
    "smalcom",
    "",
    "See documentation in source code. Chapter: Limitations.",
    aiImporterFlags_SupportTextFlavour | aiImporterFlags_LimitedSupport | aiImporterFlags_Experimental,
    0,
    0,
    0,
    0,
    "amf"
};

void AMFImporter::Clear() {
    mNodeElement_Cur = nullptr;
    mUnit.clear();
    mMaterial_Converted.clear();
    mTexture_Converted.clear();
    // Delete all elements
    if (!mNodeElement_List.empty()) {
        for (CAMFImporter_NodeElement *ne : mNodeElement_List) {
            delete ne;
        }

        mNodeElement_List.clear();
    }
}

AMFImporter::~AMFImporter() {
    if (mReader != nullptr) delete mReader;
    // Clear() is accounting if data already is deleted. So, just check again if all data is deleted.
    Clear();
}

/*********************************************************************************************************************************************/
/************************************************************ Functions: find set ************************************************************/
/*********************************************************************************************************************************************/

bool AMFImporter::Find_NodeElement(const std::string &pID, const CAMFImporter_NodeElement::EType pType, CAMFImporter_NodeElement **pNodeElement) const {
    for (CAMFImporter_NodeElement *ne : mNodeElement_List) {
        if ((ne->ID == pID) && (ne->Type == pType)) {
            if (pNodeElement != nullptr) *pNodeElement = ne;

            return true;
        }
    } // for(CAMFImporter_NodeElement* ne: mNodeElement_List)

    return false;
}

bool AMFImporter::Find_ConvertedNode(const std::string &pID, std::list<aiNode *> &pNodeList, aiNode **pNode) const {
    aiString node_name(pID.c_str());

    for (aiNode *node : pNodeList) {
        if (node->mName == node_name) {
            if (pNode != nullptr) *pNode = node;

            return true;
        }
    } // for(aiNode* node: pNodeList)

    return false;
}

bool AMFImporter::Find_ConvertedMaterial(const std::string &pID, const SPP_Material **pConvertedMaterial) const {
    for (const SPP_Material &mat : mMaterial_Converted) {
        if (mat.ID == pID) {
            if (pConvertedMaterial != nullptr) *pConvertedMaterial = &mat;

            return true;
        }
    } // for(const SPP_Material& mat: mMaterial_Converted)

    return false;
}

/*********************************************************************************************************************************************/
/************************************************************ Functions: throw set ***********************************************************/
/*********************************************************************************************************************************************/

void AMFImporter::Throw_CloseNotFound(const std::string &pNode) {
    throw DeadlyImportError("Close tag for node <" + pNode + "> not found. Seems file is corrupt.");
}

void AMFImporter::Throw_IncorrectAttr(const std::string &pAttrName) {
    throw DeadlyImportError("Node <" + std::string(mReader->getNodeName()) + "> has incorrect attribute \"" + pAttrName + "\".");
}

void AMFImporter::Throw_IncorrectAttrValue(const std::string &pAttrName) {
    throw DeadlyImportError("Attribute \"" + pAttrName + "\" in node <" + std::string(mReader->getNodeName()) + "> has incorrect value.");
}

void AMFImporter::Throw_MoreThanOnceDefined(const std::string &pNodeType, const std::string &pDescription) {
    throw DeadlyImportError("\"" + pNodeType + "\" node can be used only once in " + mReader->getNodeName() + ". Description: " + pDescription);
}

void AMFImporter::Throw_ID_NotFound(const std::string &pID) const {
    throw DeadlyImportError("Not found node with name \"" + pID + "\".");
}

/*********************************************************************************************************************************************/
/************************************************************* Functions: XML set ************************************************************/
/*********************************************************************************************************************************************/

void AMFImporter::XML_CheckNode_MustHaveChildren() {
    if (mReader->isEmptyElement()) throw DeadlyImportError(std::string("Node <") + mReader->getNodeName() + "> must have children.");
}

void AMFImporter::XML_CheckNode_SkipUnsupported(const std::string &pParentNodeName) {
    static const size_t Uns_Skip_Len = 3;
    const char *Uns_Skip[Uns_Skip_Len] = { "composite", "edge", "normal" };

    static bool skipped_before[Uns_Skip_Len] = { false, false, false };

    std::string nn(mReader->getNodeName());
    bool found = false;
    bool close_found = false;
    size_t sk_idx;

    for (sk_idx = 0; sk_idx < Uns_Skip_Len; sk_idx++) {
        if (nn != Uns_Skip[sk_idx]) continue;

        found = true;
        if (mReader->isEmptyElement()) {
            close_found = true;

            goto casu_cres;
        }

        while (mReader->read()) {
            if ((mReader->getNodeType() == irr::io::EXN_ELEMENT_END) && (nn == mReader->getNodeName())) {
                close_found = true;

                goto casu_cres;
            }
        }
    } // for(sk_idx = 0; sk_idx < Uns_Skip_Len; sk_idx++)

casu_cres:

    if (!found) throw DeadlyImportError("Unknown node \"" + nn + "\" in " + pParentNodeName + ".");
    if (!close_found) Throw_CloseNotFound(nn);

    if (!skipped_before[sk_idx]) {
        skipped_before[sk_idx] = true;
        ASSIMP_LOG_WARN_F("Skipping node \"", nn, "\" in ", pParentNodeName, ".");
    }
}

bool AMFImporter::XML_SearchNode(const std::string &pNodeName) {
    while (mReader->read()) {
        if ((mReader->getNodeType() == irr::io::EXN_ELEMENT) && XML_CheckNode_NameEqual(pNodeName)) return true;
    }

    return false;
}

bool AMFImporter::XML_ReadNode_GetAttrVal_AsBool(const int pAttrIdx) {
    std::string val(mReader->getAttributeValue(pAttrIdx));

    if ((val == "false") || (val == "0"))
        return false;
    else if ((val == "true") || (val == "1"))
        return true;
    else
        throw DeadlyImportError("Bool attribute value can contain \"false\"/\"0\" or \"true\"/\"1\" not the \"" + val + "\"");
}

float AMFImporter::XML_ReadNode_GetAttrVal_AsFloat(const int pAttrIdx) {
    std::string val;
    float tvalf;

    ParseHelper_FixTruncatedFloatString(mReader->getAttributeValue(pAttrIdx), val);
    fast_atoreal_move(val.c_str(), tvalf, false);

    return tvalf;
}

uint32_t AMFImporter::XML_ReadNode_GetAttrVal_AsU32(const int pAttrIdx) {
    return strtoul10(mReader->getAttributeValue(pAttrIdx));
}

float AMFImporter::XML_ReadNode_GetVal_AsFloat() {
    std::string val;
    float tvalf;

    if (!mReader->read()) throw DeadlyImportError("XML_ReadNode_GetVal_AsFloat. No data, seems file is corrupt.");
    if (mReader->getNodeType() != irr::io::EXN_TEXT) throw DeadlyImportError("XML_ReadNode_GetVal_AsFloat. Invalid type of XML element, seems file is corrupt.");

    ParseHelper_FixTruncatedFloatString(mReader->getNodeData(), val);
    fast_atoreal_move(val.c_str(), tvalf, false);

    return tvalf;
}

uint32_t AMFImporter::XML_ReadNode_GetVal_AsU32() {
    if (!mReader->read()) throw DeadlyImportError("XML_ReadNode_GetVal_AsU32. No data, seems file is corrupt.");
    if (mReader->getNodeType() != irr::io::EXN_TEXT) throw DeadlyImportError("XML_ReadNode_GetVal_AsU32. Invalid type of XML element, seems file is corrupt.");

    return strtoul10(mReader->getNodeData());
}

void AMFImporter::XML_ReadNode_GetVal_AsString(std::string &pValue) {
    if (!mReader->read()) throw DeadlyImportError("XML_ReadNode_GetVal_AsString. No data, seems file is corrupt.");
    if (mReader->getNodeType() != irr::io::EXN_TEXT)
        throw DeadlyImportError("XML_ReadNode_GetVal_AsString. Invalid type of XML element, seems file is corrupt.");

    pValue = mReader->getNodeData();
}

/*********************************************************************************************************************************************/
/************************************************************ Functions: parse set ***********************************************************/
/*********************************************************************************************************************************************/

void AMFImporter::ParseHelper_Node_Enter(CAMFImporter_NodeElement *pNode) {
    mNodeElement_Cur->Child.push_back(pNode); // add new element to current element child list.
    mNodeElement_Cur = pNode; // switch current element to new one.
}

void AMFImporter::ParseHelper_Node_Exit() {
    // check if we can walk up.
    if (mNodeElement_Cur != nullptr) mNodeElement_Cur = mNodeElement_Cur->Parent;
}

void AMFImporter::ParseHelper_FixTruncatedFloatString(const char *pInStr, std::string &pOutString) {
    size_t instr_len;

    pOutString.clear();
    instr_len = strlen(pInStr);
    if (!instr_len) return;

    pOutString.reserve(instr_len * 3 / 2);
    // check and correct floats in format ".x". Must be "x.y".
    if (pInStr[0] == '.') pOutString.push_back('0');

    pOutString.push_back(pInStr[0]);
    for (size_t ci = 1; ci < instr_len; ci++) {
        if ((pInStr[ci] == '.') && ((pInStr[ci - 1] == ' ') || (pInStr[ci - 1] == '-') || (pInStr[ci - 1] == '+') || (pInStr[ci - 1] == '\t'))) {
            pOutString.push_back('0');
            pOutString.push_back('.');
        } else {
            pOutString.push_back(pInStr[ci]);
        }
    }
}

static bool ParseHelper_Decode_Base64_IsBase64(const char pChar) {
    return (isalnum(pChar) || (pChar == '+') || (pChar == '/'));
}

void AMFImporter::ParseHelper_Decode_Base64(const std::string &pInputBase64, std::vector<uint8_t> &pOutputData) const {
    // With help from
    // René Nyffenegger http://www.adp-gmbh.ch/cpp/common/base64.html
    const std::string base64_chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

    uint8_t tidx = 0;
    uint8_t arr4[4], arr3[3];

    // check input data
    if (pInputBase64.size() % 4) throw DeadlyImportError("Base64-encoded data must have size multiply of four.");
    // prepare output place
    pOutputData.clear();
    pOutputData.reserve(pInputBase64.size() / 4 * 3);

    for (size_t in_len = pInputBase64.size(), in_idx = 0; (in_len > 0) && (pInputBase64[in_idx] != '='); in_len--) {
        if (ParseHelper_Decode_Base64_IsBase64(pInputBase64[in_idx])) {
            arr4[tidx++] = pInputBase64[in_idx++];
            if (tidx == 4) {
                for (tidx = 0; tidx < 4; tidx++)
                    arr4[tidx] = (uint8_t)base64_chars.find(arr4[tidx]);

                arr3[0] = (arr4[0] << 2) + ((arr4[1] & 0x30) >> 4);
                arr3[1] = ((arr4[1] & 0x0F) << 4) + ((arr4[2] & 0x3C) >> 2);
                arr3[2] = ((arr4[2] & 0x03) << 6) + arr4[3];
                for (tidx = 0; tidx < 3; tidx++)
                    pOutputData.push_back(arr3[tidx]);

                tidx = 0;
            } // if(tidx == 4)
        } // if(ParseHelper_Decode_Base64_IsBase64(pInputBase64[in_idx]))
        else {
            in_idx++;
        } // if(ParseHelper_Decode_Base64_IsBase64(pInputBase64[in_idx])) else
    }

    if (tidx) {
        for (uint8_t i = tidx; i < 4; i++)
            arr4[i] = 0;
        for (uint8_t i = 0; i < 4; i++)
            arr4[i] = (uint8_t)(base64_chars.find(arr4[i]));

        arr3[0] = (arr4[0] << 2) + ((arr4[1] & 0x30) >> 4);
        arr3[1] = ((arr4[1] & 0x0F) << 4) + ((arr4[2] & 0x3C) >> 2);
        arr3[2] = ((arr4[2] & 0x03) << 6) + arr4[3];
        for (uint8_t i = 0; i < (tidx - 1); i++)
            pOutputData.push_back(arr3[i]);
    }
}

void AMFImporter::ParseFile(const std::string &pFile, IOSystem *pIOHandler) {
    irr::io::IrrXMLReader *OldReader = mReader; // store current XMLreader.
    std::unique_ptr<IOStream> file(pIOHandler->Open(pFile, "rb"));

    // Check whether we can read from the file
    if (file.get() == nullptr) {
        throw DeadlyImportError("Failed to open AMF file " + pFile + ".");
    }

    // generate a XML reader for it
    std::unique_ptr<CIrrXML_IOStreamReader> mIOWrapper(new CIrrXML_IOStreamReader(file.get()));
    mReader = irr::io::createIrrXMLReader(mIOWrapper.get());
    if (!mReader) throw DeadlyImportError("Failed to create XML reader for file" + pFile + ".");
    //
    // start reading
    // search for root tag <amf>
    if (XML_SearchNode("amf"))
        ParseNode_Root();
    else
        throw DeadlyImportError("Root node \"amf\" not found.");

    delete mReader;
    // restore old XMLreader
    mReader = OldReader;
}

// <amf
// unit="" - The units to be used. May be "inch", "millimeter", "meter", "feet", or "micron".
// version="" - Version of file format.
// >
// </amf>
// Root XML element.
// Multi elements - No.
void AMFImporter::ParseNode_Root() {
    std::string unit, version;
    CAMFImporter_NodeElement *ne(nullptr);

    // Read attributes for node <amf>.
    MACRO_ATTRREAD_LOOPBEG;
    MACRO_ATTRREAD_CHECK_RET("unit", unit, mReader->getAttributeValue);
    MACRO_ATTRREAD_CHECK_RET("version", version, mReader->getAttributeValue);
    MACRO_ATTRREAD_LOOPEND_WSKIP;

    // Check attributes
    if (!mUnit.empty()) {
        if ((mUnit != "inch") && (mUnit != "millimeter") && (mUnit != "meter") && (mUnit != "feet") && (mUnit != "micron")) Throw_IncorrectAttrValue("unit");
    }

    // create root node element.
    ne = new CAMFImporter_NodeElement_Root(nullptr);
    mNodeElement_Cur = ne; // set first "current" element
    // and assign attribute's values
    ((CAMFImporter_NodeElement_Root *)ne)->Unit = unit;
    ((CAMFImporter_NodeElement_Root *)ne)->Version = version;

    // Check for child nodes
    if (!mReader->isEmptyElement()) {
        MACRO_NODECHECK_LOOPBEGIN("amf");
        if (XML_CheckNode_NameEqual("object")) {
            ParseNode_Object();
            continue;
        }
        if (XML_CheckNode_NameEqual("material")) {
            ParseNode_Material();
            continue;
        }
        if (XML_CheckNode_NameEqual("texture")) {
            ParseNode_Texture();
            continue;
        }
        if (XML_CheckNode_NameEqual("constellation")) {
            ParseNode_Constellation();
            continue;
        }
        if (XML_CheckNode_NameEqual("metadata")) {
            ParseNode_Metadata();
            continue;
        }
        MACRO_NODECHECK_LOOPEND("amf");
        mNodeElement_Cur = ne; // force restore "current" element
    } // if(!mReader->isEmptyElement())

    mNodeElement_List.push_back(ne); // add to node element list because its a new object in graph.
}

// <constellation
// id="" - The Object ID of the new constellation being defined.
// >
// </constellation>
// A collection of objects or constellations with specific relative locations.
// Multi elements - Yes.
// Parent element - <amf>.
void AMFImporter::ParseNode_Constellation() {
    std::string id;
    CAMFImporter_NodeElement *ne(nullptr);

    // Read attributes for node <constellation>.
    MACRO_ATTRREAD_LOOPBEG;
    MACRO_ATTRREAD_CHECK_RET("id", id, mReader->getAttributeValue);
    MACRO_ATTRREAD_LOOPEND;

    // create and if needed - define new grouping object.
    ne = new CAMFImporter_NodeElement_Constellation(mNodeElement_Cur);

    CAMFImporter_NodeElement_Constellation &als = *((CAMFImporter_NodeElement_Constellation *)ne); // alias for convenience

    if (!id.empty()) als.ID = id;
    // Check for child nodes
    if (!mReader->isEmptyElement()) {
        ParseHelper_Node_Enter(ne);
        MACRO_NODECHECK_LOOPBEGIN("constellation");
        if (XML_CheckNode_NameEqual("instance")) {
            ParseNode_Instance();
            continue;
        }
        if (XML_CheckNode_NameEqual("metadata")) {
            ParseNode_Metadata();
            continue;
        }
        MACRO_NODECHECK_LOOPEND("constellation");
        ParseHelper_Node_Exit();
    } // if(!mReader->isEmptyElement())
    else {
        mNodeElement_Cur->Child.push_back(ne); // Add element to child list of current element
    } // if(!mReader->isEmptyElement()) else

    mNodeElement_List.push_back(ne); // and to node element list because its a new object in graph.
}

// <instance
// objectid="" - The Object ID of the new constellation being defined.
// >
// </instance>
// A collection of objects or constellations with specific relative locations.
// Multi elements - Yes.
// Parent element - <amf>.
void AMFImporter::ParseNode_Instance() {
    std::string objectid;
    CAMFImporter_NodeElement *ne(nullptr);

    // Read attributes for node <constellation>.
    MACRO_ATTRREAD_LOOPBEG;
    MACRO_ATTRREAD_CHECK_RET("objectid", objectid, mReader->getAttributeValue);
    MACRO_ATTRREAD_LOOPEND;

    // used object id must be defined, check that.
    if (objectid.empty()) throw DeadlyImportError("\"objectid\" in <instance> must be defined.");
    // create and define new grouping object.
    ne = new CAMFImporter_NodeElement_Instance(mNodeElement_Cur);

    CAMFImporter_NodeElement_Instance &als = *((CAMFImporter_NodeElement_Instance *)ne); // alias for convenience

    als.ObjectID = objectid;
    // Check for child nodes
    if (!mReader->isEmptyElement()) {
        bool read_flag[6] = { false, false, false, false, false, false };

        als.Delta.Set(0, 0, 0);
        als.Rotation.Set(0, 0, 0);
        ParseHelper_Node_Enter(ne);
        MACRO_NODECHECK_LOOPBEGIN("instance");
        MACRO_NODECHECK_READCOMP_F("deltax", read_flag[0], als.Delta.x);
        MACRO_NODECHECK_READCOMP_F("deltay", read_flag[1], als.Delta.y);
        MACRO_NODECHECK_READCOMP_F("deltaz", read_flag[2], als.Delta.z);
        MACRO_NODECHECK_READCOMP_F("rx", read_flag[3], als.Rotation.x);
        MACRO_NODECHECK_READCOMP_F("ry", read_flag[4], als.Rotation.y);
        MACRO_NODECHECK_READCOMP_F("rz", read_flag[5], als.Rotation.z);
        MACRO_NODECHECK_LOOPEND("instance");
        ParseHelper_Node_Exit();
        // also convert degrees to radians.
        als.Rotation.x = AI_MATH_PI_F * als.Rotation.x / 180.0f;
        als.Rotation.y = AI_MATH_PI_F * als.Rotation.y / 180.0f;
        als.Rotation.z = AI_MATH_PI_F * als.Rotation.z / 180.0f;
    } // if(!mReader->isEmptyElement())
    else {
        mNodeElement_Cur->Child.push_back(ne); // Add element to child list of current element
    } // if(!mReader->isEmptyElement()) else

    mNodeElement_List.push_back(ne); // and to node element list because its a new object in graph.
}

// <object
// id="" - A unique ObjectID for the new object being defined.
// >
// </object>
// An object definition.
// Multi elements - Yes.
// Parent element - <amf>.
void AMFImporter::ParseNode_Object() {
    std::string id;
    CAMFImporter_NodeElement *ne(nullptr);

    // Read attributes for node <object>.
    MACRO_ATTRREAD_LOOPBEG;
    MACRO_ATTRREAD_CHECK_RET("id", id, mReader->getAttributeValue);
    MACRO_ATTRREAD_LOOPEND;

    // create and if needed - define new geometry object.
    ne = new CAMFImporter_NodeElement_Object(mNodeElement_Cur);

    CAMFImporter_NodeElement_Object &als = *((CAMFImporter_NodeElement_Object *)ne); // alias for convenience

    if (!id.empty()) als.ID = id;
    // Check for child nodes
    if (!mReader->isEmptyElement()) {
        bool col_read = false;

        ParseHelper_Node_Enter(ne);
        MACRO_NODECHECK_LOOPBEGIN("object");
        if (XML_CheckNode_NameEqual("color")) {
            // Check if color already defined for object.
            if (col_read) Throw_MoreThanOnceDefined("color", "Only one color can be defined for <object>.");
            // read data and set flag about it
            ParseNode_Color();
            col_read = true;

            continue;
        }

        if (XML_CheckNode_NameEqual("mesh")) {
            ParseNode_Mesh();
            continue;
        }
        if (XML_CheckNode_NameEqual("metadata")) {
            ParseNode_Metadata();
            continue;
        }
        MACRO_NODECHECK_LOOPEND("object");
        ParseHelper_Node_Exit();
    } // if(!mReader->isEmptyElement())
    else {
        mNodeElement_Cur->Child.push_back(ne); // Add element to child list of current element
    } // if(!mReader->isEmptyElement()) else

    mNodeElement_List.push_back(ne); // and to node element list because its a new object in graph.
}

// <metadata
// type="" - The type of the attribute.
// >
// </metadata>
// Specify additional information about an entity.
// Multi elements - Yes.
// Parent element - <amf>, <object>, <volume>, <material>, <vertex>.
//
// Reserved types are:
// "Name" - The alphanumeric label of the entity, to be used by the interpreter if interacting with the user.
// "Description" - A description of the content of the entity
// "URL" - A link to an external resource relating to the entity
// "Author" - Specifies the name(s) of the author(s) of the entity
// "Company" - Specifying the company generating the entity
// "CAD" - specifies the name of the originating CAD software and version
// "Revision" - specifies the revision of the entity
// "Tolerance" - specifies the desired manufacturing tolerance of the entity in entity's unit system
// "Volume" - specifies the total volume of the entity, in the entity's unit system, to be used for verification (object and volume only)
void AMFImporter::ParseNode_Metadata() {
    std::string type, value;
    CAMFImporter_NodeElement *ne(nullptr);

    // read attribute
    MACRO_ATTRREAD_LOOPBEG;
    MACRO_ATTRREAD_CHECK_RET("type", type, mReader->getAttributeValue);
    MACRO_ATTRREAD_LOOPEND;
    // and value of node.
    value = mReader->getNodeData();
    // Create node element and assign read data.
    ne = new CAMFImporter_NodeElement_Metadata(mNodeElement_Cur);
    ((CAMFImporter_NodeElement_Metadata *)ne)->Type = type;
    ((CAMFImporter_NodeElement_Metadata *)ne)->Value = value;
    mNodeElement_Cur->Child.push_back(ne); // Add element to child list of current element
    mNodeElement_List.push_back(ne); // and to node element list because its a new object in graph.
}

/*********************************************************************************************************************************************/
/******************************************************** Functions: BaseImporter set ********************************************************/
/*********************************************************************************************************************************************/

bool AMFImporter::CanRead(const std::string &pFile, IOSystem *pIOHandler, bool pCheckSig) const {
    const std::string extension = GetExtension(pFile);

    if (extension == "amf") {
        return true;
    }

    if (!extension.length() || pCheckSig) {
        const char *tokens[] = { "<amf" };

        return SearchFileHeaderForToken(pIOHandler, pFile, tokens, 1);
    }

    return false;
}

void AMFImporter::GetExtensionList(std::set<std::string> &pExtensionList) {
    pExtensionList.insert("amf");
}

const aiImporterDesc *AMFImporter::GetInfo() const {
    return &Description;
}

void AMFImporter::InternReadFile(const std::string &pFile, aiScene *pScene, IOSystem *pIOHandler) {
    Clear(); // delete old graph.
    ParseFile(pFile, pIOHandler);
    Postprocess_BuildScene(pScene);
    // scene graph is ready, exit.
}

} // namespace Assimp

#endif // !ASSIMP_BUILD_NO_AMF_IMPORTER