PolyhedralUtil.cpp

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//  ************************************************************************************************
//
//  BornAgain: simulate and fit reflection and scattering
//
//! @file      Sample/Particle/PolyhedralUtil.cpp
//! @brief     Implements interface class IFormFactor.
//!
//! @homepage  http://www.bornagainproject.org
//! @license   GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2018
//! @authors   Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
//  ************************************************************************************************
 
#include "Sample/Particle/PolyhedralUtil.h"
#include "Base/Util/Algorithms.h"
#include "Base/Vector/RotMatrix.h"
#include "Sample/Scattering/Rotations.h"
#include "Sample/Shapes/IShape3D.h"
 
double PolyhedralUtil::BottomZ(const std::vector<R3>& vertices, const IRotation* rotation)
{
    ASSERT(vertices.size());
    return BaseUtils::algo::min_value(
        vertices.begin(), vertices.end(), [&](const R3& vertex) -> double {
            return (rotation ? rotation->transformed(vertex) : vertex).z();
        });
}
 
double PolyhedralUtil::TopZ(const std::vector<R3>& vertices, const IRotation* rotation)
{
    ASSERT(vertices.size());
    return BaseUtils::algo::max_value(
        vertices.begin(), vertices.end(), [&](const R3& vertex) -> double {
            return (rotation ? rotation->transformed(vertex) : vertex).z();
        });
}