Method toOSL

src/IECore/Ramp.cpp:401–456

template<typename X, typename Y>
void Ramp<X,Y>::toOSL( std::string &basis, std::vector<X> &positions, std::vector<Y> &values ) const
{
	PointContainer storage;
	const PointContainer *currentPoints = &points;

    if( interpolation == RampInterpolation::MonotoneCubic )
    {
		monotoneCubicCVsToBezierCurve< Ramp<X,Y> >( points, storage );
		currentPoints = &storage;
        basis = "bezier";
    }
    else if( interpolation == RampInterpolation::BSpline )
    {
        basis = "bspline";
    }
    else if( interpolation == RampInterpolation::Linear )
    {
        basis = "linear";
    }
    else if( interpolation == RampInterpolation::Constant )
    {
        // Also, "To maintain consistency", "constant splines ignore the first and the two last
        // data values."
        basis = "constant";
    }
	else
	{
		basis = "catmull-rom";
	}
    auto [ duplicateStartPoints, duplicateEndPoints ] = getOSLEndPointDuplication( interpolation );

    positions.reserve( currentPoints->size() );
    values.reserve( currentPoints->size() + duplicateStartPoints + duplicateEndPoints );

    if( currentPoints->size() )
    {
        for( size_t i = 0; i < duplicateStartPoints; i++ )
        {
            positions.push_back( currentPoints->begin()->first );
            values.push_back( currentPoints->begin()->second );
        }
    }
    for( auto &it : *currentPoints )
    {
        positions.push_back( it.first );
        values.push_back( it.second );
    }
    if( currentPoints->size() )
    {
        for( size_t i = 0; i < duplicateEndPoints; i++ )
        {
            positions.push_back( currentPoints->rbegin()->first );
            values.push_back( currentPoints->rbegin()->second );
        }
    }
}

template<typename X, typename Y>