Method generateRawDataAsset

Source/Engine/CSG/CSGBuilder.cpp:391–438

}

bool CSGBuilderImpl::generateRawDataAsset(Scene* scene, RawData& meshData, Guid& assetId, const String& assetPath)
{
    // Prepare data
    MemoryWriteStream stream(4096);
    {
        // Header (with version number)
        stream.WriteInt32(1);
        const int32 brushesCount = meshData.Brushes.Count();
        stream.WriteInt32(brushesCount);

        // Surfaces data locations
        int32 surfacesDataOffset = sizeof(int32) * 2 + (sizeof(Guid) + sizeof(int32)) * brushesCount;
        for (auto brush = meshData.Brushes.Begin(); brush.IsNotEnd(); ++brush)
        {
            auto& surfaces = brush->Value.Surfaces;

            stream.Write(brush->Key);
            stream.WriteInt32(surfacesDataOffset);

            // Calculate offset in data storage to the next brush data
            int32 brushDataSize = 0;
            for (int32 i = 0; i < surfaces.Count(); i++)
            {
                brushDataSize += sizeof(int32) + sizeof(RawData::SurfaceTriangle) * surfaces[i].Triangles.Count();
            }
            surfacesDataOffset += brushDataSize;
        }

        // Surfaces data
        for (auto brush = meshData.Brushes.Begin(); brush.IsNotEnd(); ++brush)
        {
            auto& surfaces = brush->Value.Surfaces;

            for (int32 i = 0; i < surfaces.Count(); i++)
            {
                auto& triangles = surfaces[i].Triangles;

                stream.WriteInt32(triangles.Count());
                stream.WriteBytes(triangles.Get(), triangles.Count() * sizeof(RawData::SurfaceTriangle));
            }
        }
    }

    // Serialize
    BytesContainer bytesContainer;
    bytesContainer.Link(ToSpan(stream));
    return AssetsImportingManager::Create(AssetsImportingManager::CreateRawDataTag, assetPath, assetId, (void*)&bytesContainer);
}

#endif