assimp/code/FBXMaterial.cpp

/*
Open Asset Import Library (assimp)
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/** @file  FBXMaterial.cpp
 *  @brief Assimp::FBX::Material and Assimp::FBX::Texture implementation
 */

#ifndef ASSIMP_BUILD_NO_FBX_IMPORTER

#include "FBXParser.h"
#include "FBXDocument.h"
#include "FBXImporter.h"
#include "FBXImportSettings.h"
#include "FBXDocumentUtil.h"
#include "FBXProperties.h"
#include <boost/foreach.hpp>

namespace Assimp {
namespace FBX {

    using namespace Util;

// ------------------------------------------------------------------------------------------------
Material::Material(uint64_t id, const Element& element, const Document& doc, const std::string& name)
: Object(id,element,name)
{
    const Scope& sc = GetRequiredScope(element);

    const Element* const ShadingModel = sc["ShadingModel"];
    const Element* const MultiLayer = sc["MultiLayer"];

    if(MultiLayer) {
        multilayer = !!ParseTokenAsInt(GetRequiredToken(*MultiLayer,0));
    }

    if(ShadingModel) {
        shading = ParseTokenAsString(GetRequiredToken(*ShadingModel,0));
    }
    else {
        DOMWarning("shading mode not specified, assuming phong",&element);
        shading = "phong";
    }

    std::string templateName;

    const char* const sh = shading.c_str();
    if(!strcmp(sh,"phong")) {
        templateName = "Material.FbxSurfacePhong";
    }
    else if(!strcmp(sh,"lambert")) {
        templateName = "Material.FbxSurfaceLambert";
    }
    else {
        DOMWarning("shading mode not recognized: " + shading,&element);
    }

    props = GetPropertyTable(doc,templateName,element,sc);

    // resolve texture links
    const std::vector<const Connection*>& conns = doc.GetConnectionsByDestinationSequenced(ID());
    BOOST_FOREACH(const Connection* con, conns) {

        // texture link to properties, not objects
        if (!con->PropertyName().length()) {
            continue;
        }

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

        const Texture* const tex = dynamic_cast<const Texture*>(ob);
        if(!tex) {
            const LayeredTexture* const layeredTexture = dynamic_cast<const LayeredTexture*>(ob);
            if(!layeredTexture) {
                DOMWarning("source object for texture link is not a texture or layered texture, ignoring",&element);
                continue;
            }
            const std::string& prop = con->PropertyName();
            if (layeredTextures.find(prop) != layeredTextures.end()) {
                DOMWarning("duplicate layered texture link: " + prop,&element);
            }

            layeredTextures[prop] = layeredTexture;
            ((LayeredTexture*)layeredTexture)->fillTexture(doc);
        }
        else
        {
            const std::string& prop = con->PropertyName();
            if (textures.find(prop) != textures.end()) {
                DOMWarning("duplicate texture link: " + prop,&element);
            }

            textures[prop] = tex;
        }

    }
}


// ------------------------------------------------------------------------------------------------
Material::~Material()
{
}


// ------------------------------------------------------------------------------------------------
Texture::Texture(uint64_t id, const Element& element, const Document& doc, const std::string& name)
: Object(id,element,name)
, uvScaling(1.0f,1.0f)
{
    const Scope& sc = GetRequiredScope(element);

    const Element* const Type = sc["Type"];
    const Element* const FileName = sc["FileName"];
    const Element* const RelativeFilename = sc["RelativeFilename"];
    const Element* const ModelUVTranslation = sc["ModelUVTranslation"];
    const Element* const ModelUVScaling = sc["ModelUVScaling"];
    const Element* const Texture_Alpha_Source = sc["Texture_Alpha_Source"];
    const Element* const Cropping = sc["Cropping"];

    if(Type) {
        type = ParseTokenAsString(GetRequiredToken(*Type,0));
    }

    if(FileName) {
        fileName = ParseTokenAsString(GetRequiredToken(*FileName,0));
    }

    if(RelativeFilename) {
        relativeFileName = ParseTokenAsString(GetRequiredToken(*RelativeFilename,0));
    }

    if(ModelUVTranslation) {
        uvTrans = aiVector2D(ParseTokenAsFloat(GetRequiredToken(*ModelUVTranslation,0)),
            ParseTokenAsFloat(GetRequiredToken(*ModelUVTranslation,1))
        );
    }

    if(ModelUVScaling) {
        uvScaling = aiVector2D(ParseTokenAsFloat(GetRequiredToken(*ModelUVScaling,0)),
            ParseTokenAsFloat(GetRequiredToken(*ModelUVScaling,1))
        );
    }

    if(Cropping) {
        crop[0] = ParseTokenAsInt(GetRequiredToken(*Cropping,0));
        crop[1] = ParseTokenAsInt(GetRequiredToken(*Cropping,1));
        crop[2] = ParseTokenAsInt(GetRequiredToken(*Cropping,2));
        crop[3] = ParseTokenAsInt(GetRequiredToken(*Cropping,3));
    }
    else {
        // vc8 doesn't support the crop() syntax in initialization lists
        // (and vc9 WARNS about the new (i.e. compliant) behaviour).
        crop[0] = crop[1] = crop[2] = crop[3] = 0;
    }

    if(Texture_Alpha_Source) {
        alphaSource = ParseTokenAsString(GetRequiredToken(*Texture_Alpha_Source,0));
    }

    props = GetPropertyTable(doc,"Texture.FbxFileTexture",element,sc);
}


Texture::~Texture()
{

}

LayeredTexture::LayeredTexture(uint64_t id, const Element& element, const Document& /*doc*/, const std::string& name)
: Object(id,element,name)
,texture(0)
,blendMode(BlendMode_Modulate)
,alpha(1)
{
    const Scope& sc = GetRequiredScope(element);

    const Element* const BlendModes = sc["BlendModes"];
    const Element* const Alphas = sc["Alphas"];


    if(BlendModes!=0)
    {
        blendMode = (BlendMode)ParseTokenAsInt(GetRequiredToken(*BlendModes,0));
    }
    if(Alphas!=0)
    {
        alpha = ParseTokenAsFloat(GetRequiredToken(*Alphas,0));
    }
}

LayeredTexture::~LayeredTexture()
{

}

void LayeredTexture::fillTexture(const Document& doc)
{
    const std::vector<const Connection*>& conns = doc.GetConnectionsByDestinationSequenced(ID());
    for(size_t i = 0; i < conns.size();++i)
    {
        const Connection* con = conns.at(i);

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

        const Texture* const tex = dynamic_cast<const Texture*>(ob);

        texture = tex;
    }
}

} //!FBX
} //!Assimp

#endif