Function getToIntConverter

source/MRMesh/MRPrecisePredicates3.cpp:367–384

}

ConvertToIntVector getToIntConverter( const Box3d& box )
{
    Vector3d center{ box.center() };
    auto bbSize = box.size();
    double maxDim = std::max( { bbSize[0],bbSize[1],bbSize[2] } );

    // range is selected so that after centering each integer point is within [-max/2; +max/2] range,
    // so the difference of any two points will be within [-max; +max] range
    double invRange = cRangeIntMax / maxDim;

    return [invRange, center] ( const Vector3f& v )
    {
        // perform intermediate operations in double for better precision
        const auto d = ( Vector3d{ v } - center ) * invRange;
        // and round to the nearest integer instead of truncating to zero
        return Vector3i( (int)std::round( d.x ), (int)std::round( d.y ), (int)std::round( d.z ) );
    };
}

ConvertToFloatVector getToFloatConverter( const Box3d& box )
{