scale_shape.hpp

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#ifndef GENERATOR_SCALESHAPE_HPP
#define GENERATOR_SCALESHAPE_HPP
 
#include "transform_shape.hpp"
 
namespace generator
{
 
template<typename shape_t>
class scale_shape_t
{
private:
    using impl_t = transform_shape_t<shape_t>;
    impl_t transform_shape_;
 
public:
    scale_shape_t(shape_t shape, const gml::dvec2& scale)
        : transform_shape_{std::move(shape),
                           [scale](shape_vertex_t& value)
                           {
                               value.position *= scale;
                               value.tangent = normalize(scale * value.tangent);
                           }}
    {
    }
 
    using edges_t = typename impl_t::edges_t;
 
    edges_t edges() const noexcept
    {
        return transform_shape_.edges();
    }
 
    using vertices_t = typename impl_t::vertices_t;
 
    vertices_t vertices() const noexcept
    {
        return transform_shape_.vertices();
    }
};
 
template<typename shape_t>
scale_shape_t<shape_t> scale_shape(shape_t shape, const gml::dvec2& scale)
{
    return scale_shape_t<shape_t>{std::move(shape), scale};
}
} // namespace generator
 
#endif