transform_matrix.h

/*****************************************************************************
 * VCLib                                                                     *
 * Visual Computing Library                                                  *
 *                                                                           *
 * Copyright(C) 2021-2025                                                    *
 * Visual Computing Lab                                                      *
 * ISTI - Italian National Research Council                                  *
 *                                                                           *
 * All rights reserved.                                                      *
 *                                                                           *
 * This program is free software; you can redistribute it and/or modify      *
 * it under the terms of the Mozilla Public License Version 2.0 as published *
 * by the Mozilla Foundation; either version 2 of the License, or            *
 * (at your option) any later version.                                       *
 *                                                                           *
 * This program is distributed in the hope that it will be useful,           *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of            *
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the              *
 * Mozilla Public License Version 2.0                                        *
 * (https://www.mozilla.org/en-US/MPL/2.0/) for more details.                *
 ****************************************************************************/
 
#ifndef VCL_MESH_COMPONENTS_TRANSFORM_MATRIX_H
#define VCL_MESH_COMPONENTS_TRANSFORM_MATRIX_H
 
#include "bases/component.h"
 
#include <vclib/concepts/mesh/components/transform_matrix.h>
#include <vclib/space/core/matrix.h>
 
namespace vcl::comp {
 
template<typename Scalar, typename ParentElemType = void, bool OPT = false>
class TransformMatrix :
        public Component<
            TransformMatrix<Scalar, ParentElemType, OPT>,
            CompId::TRANSFORM_MATRIX,
            Matrix44<Scalar>,
            ParentElemType,
            !std::is_same_v<ParentElemType, void>,
            OPT>
{
    using Base = Component<
        TransformMatrix<Scalar, ParentElemType, OPT>,
        CompId::TRANSFORM_MATRIX,
        Matrix44<Scalar>,
        ParentElemType,
        !std::is_same_v<ParentElemType, void>,
        OPT>;
 
public:
    using TransformMatrixType = Matrix44<Scalar>;
 
    /* Constructors */
 
    TransformMatrix()
    {
        if constexpr (!Base::IS_VERTICAL) {
            init();
        }
    }
 
    void init() { transformMatrix().setIdentity(); }
 
    /* Member functions */
 
    const TransformMatrixType& transformMatrix() const { return Base::data(); }
 
    TransformMatrixType& transformMatrix() { return Base::data(); }
 
protected:
    // Component interface functions
    template<typename Element>
    void importFrom(const Element& e, bool = true)
    {
        if constexpr (HasTransformMatrix<Element>) {
            transformMatrix() = e.transformMatrix().template cast<Scalar>();
        }
    }
 
    void serialize(std::ostream& os) const { transformMatrix().serialize(os); }
 
    void deserialize(std::istream& is) { transformMatrix().deserialize(is); }
};
 
/* Detector function to check if a class has TransformMatrix available */
 
bool isTransformMatrixAvailableOn(const ElementOrMeshConcept auto& element)
{
    return isComponentAvailableOn<CompId::TRANSFORM_MATRIX>(element);
}
 
/* Specialization Aliases */
 
template<typename ElementType = void, bool OPT = false>
using TransformMatrixf = TransformMatrix<float, ElementType, OPT>;
 
template<typename ElementType = void, bool OPT = false>
using TransformMatrixd = TransformMatrix<double, ElementType, OPT>;
 
} // namespace vcl::comp
 
#endif // VCL_MESH_COMPONENTS_TRANSFORM_MATRIX_H