uv_flip_mesh.hpp

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#ifndef GENERATOR_UVFLIPMESH_HPP
#define GENERATOR_UVFLIPMESH_HPP
 
#include "transform_mesh.hpp"
 
namespace generator
{
 
template<typename mesh_t>
class uv_flip_mesh_t
{
private:
    using impl_t = transform_mesh_t<mesh_t>;
    impl_t transform_mesh_;
 
public:
    uv_flip_mesh_t(mesh_t mesh, bool u, bool v)
        : transform_mesh_{std::move(mesh),
                          [u, v](mesh_vertex_t& vertex)
                          {
                              if(u)
                                  vertex.tex_coord[0] = 1.0 - vertex.tex_coord[0];
                              if(v)
                                  vertex.tex_coord[1] = 1.0 - vertex.tex_coord[1];
                          }}
    {
    }
 
    using triangles_t = typename impl_t::triangles_t;
 
    triangles_t triangles() const noexcept
    {
        return transform_mesh_.triangles();
    }
 
    using vertices_t = typename impl_t::vertices_t;
 
    vertices_t vertices() const noexcept
    {
        return transform_mesh_.vertices();
    }
};
 
template<typename mesh_t>
uv_flip_mesh_t<mesh_t> uv_flip_mesh(mesh_t mesh)
{
    return uv_flip_mesh_t<mesh_t>{std::move(mesh)};
}
} // namespace generator
 
#endif