parametric_path.cpp

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#include "parametric_path.hpp"
 
using namespace generator;
 
parametric_path_t::edges_t::edges_t(const parametric_path_t& path) : path_{&path}, i_{0}
{
}
 
edge_t parametric_path_t::edges_t::generate() const
{
    if(done())
        throw std::out_of_range("Done!");
    return edge_t{{i_, i_ + 1}};
}
 
bool parametric_path_t::edges_t::done() const noexcept
{
    return i_ == path_->segments_;
}
 
void parametric_path_t::edges_t::next()
{
    if(done())
        throw std::out_of_range("Done!");
    ++i_;
}
 
parametric_path_t::vertices_t::vertices_t(const parametric_path_t& path) : path_{&path}, i_{0}
{
}
 
path_vertex_t parametric_path_t::vertices_t::generate() const
{
    if(done())
        throw std::out_of_range("Done!");
 
    return path_->eval_(i_ * path_->delta_);
}
 
bool parametric_path_t::vertices_t::done() const noexcept
{
    if(path_->segments_ == 0)
        return true;
    return i_ == path_->segments_ + 1;
}
 
void parametric_path_t::vertices_t::next()
{
    if(done())
        throw std::out_of_range("Done!");
    ++i_;
}
 
parametric_path_t::parametric_path_t(const std::function<path_vertex_t(double)>& eval, int segments) noexcept
    : eval_{std::move(eval)}
    , segments_{segments}
    , delta_{1.0 / segments}
{
}
 
parametric_path_t::edges_t parametric_path_t::edges() const noexcept
{
    return edges_t{*this};
}
 
parametric_path_t::vertices_t parametric_path_t::vertices() const noexcept
{
    return vertices_t{*this};
}