super_ellipse.hpp

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#pragma once
#include "le2d/geometry.hpp"
#include "le2d/vertex_array.hpp"
#include <kvf/color.hpp>
#include <kvf/rect.hpp>
 
namespace le::shape {
struct SuperEllipseParams {
    kvf::Color color{kvf::white_v};
    float exponent{4.0f};
    std::int32_t resolution{128};
};
 
class SuperEllipse : public IGeometry {
  public:
    using Params = SuperEllipseParams;
 
    static constexpr auto default_size_v = glm::vec2{default_length_v};
 
    explicit(false) SuperEllipse(glm::vec2 const size = default_size_v, Params const& params = {}) { create(size, params); }
 
    [[nodiscard]] auto get_vertices() const -> std::span<Vertex const> final { return m_verts.vertices; }
    [[nodiscard]] auto get_indices() const -> std::span<std::uint32_t const> final { return m_verts.indices; }
    [[nodiscard]] auto get_topology() const -> vk::PrimitiveTopology final { return vk::PrimitiveTopology::eTriangleFan; }
 
    void create(glm::vec2 size = default_size_v, Params const& params = {});
 
    [[nodiscard]] auto get_params() const -> Params const& { return m_params; }
    [[nodiscard]] auto get_size() const -> glm::vec2 { return m_size; }
 
    [[nodiscard]] auto get_vertex_array() const -> VertexArray const& { return m_verts; }
 
  private:
    VertexArray m_verts{};
    glm::vec2 m_size{};
    Params m_params{};
};
} // namespace le::shape