assimp/code/AssetLib/FBX/FBXModel.cpp

/*
Open Asset Import Library (assimp)
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*/

/** @file  FBXModel.cpp
 *  @brief Assimp::FBX::Model implementation
 */

#ifndef ASSIMP_BUILD_NO_FBX_IMPORTER

#include "FBXDocument.h"
#include "FBXDocumentUtil.h"
#include "FBXImporter.h"
#include "FBXMeshGeometry.h"
#include "FBXParser.h"

namespace Assimp {
namespace FBX {

using namespace Util;

// ------------------------------------------------------------------------------------------------
Model::Model(uint64_t id, const Element &element, const Document &doc, const std::string &name) :
        Object(id, element, name), shading("Y") {
    const Scope &sc = GetRequiredScope(element);
    const Element *const Shading = sc["Shading"];
    const Element *const Culling = sc["Culling"];

    if (Shading) {
        shading = GetRequiredToken(*Shading, 0).StringContents();
    }

    if (Culling) {
        culling = ParseTokenAsString(GetRequiredToken(*Culling, 0));
    }

    props = GetPropertyTable(doc, "Model.FbxNode", element, sc);
    ResolveLinks(element, doc);
}

// ------------------------------------------------------------------------------------------------
void Model::ResolveLinks(const Element&, const Document &doc) {
    const char *const arr[] = { "Geometry", "Material", "NodeAttribute" };

    // resolve material
    const std::vector<const Connection *> &conns = doc.GetConnectionsByDestinationSequenced(ID(), arr, 3);

    materials.reserve(conns.size());
    geometry.reserve(conns.size());
    attributes.reserve(conns.size());
    for (const Connection *con : conns) {

        // material and geometry links should be Object-Object connections
        if (con->PropertyName().length()) {
            continue;
        }

        const Object *const ob = con->SourceObject();
        if (!ob) {
            DOMWarning("failed to read source object for incoming Model link, ignoring", &element);
            continue;
        }

        const Material *const mat = dynamic_cast<const Material *>(ob);
        if (mat) {
            materials.push_back(mat);
            continue;
        }

        const Geometry *const geo = dynamic_cast<const Geometry *>(ob);
        if (geo) {
            geometry.push_back(geo);
            continue;
        }

        const NodeAttribute *const att = dynamic_cast<const NodeAttribute *>(ob);
        if (att) {
            attributes.push_back(att);
            continue;
        }

        DOMWarning("source object for model link is neither Material, NodeAttribute nor Geometry, ignoring", &element);
        continue;
    }
}

// ------------------------------------------------------------------------------------------------
bool Model::IsNull() const {
    const std::vector<const NodeAttribute *> &attrs = GetAttributes();
    for (const NodeAttribute *att : attrs) {

        const Null *null_tag = dynamic_cast<const Null *>(att);
        if (null_tag) {
            return true;
        }
    }

    return false;
}

} // namespace FBX
} // namespace Assimp

#endif