triangle.hpp

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#pragma once
#include "le2d/geometry.hpp"
#include <kvf/color.hpp>
#include <kvf/rect.hpp>
#include <array>
 
namespace le::shape {
class Triangle : public IGeometry {
  public:
    static constexpr auto vertex_count_v{4uz};
 
    static constexpr auto default_radius_v = 0.5f * default_length_v;
 
    explicit(false) Triangle(float const radius = default_radius_v, kvf::Color const color = kvf::white_v) { create(radius, color); }
 
    [[nodiscard]] auto get_vertices() const -> std::span<Vertex const> final { return vertices; }
    [[nodiscard]] auto get_indices() const -> std::span<std::uint32_t const> final { return {}; }
    [[nodiscard]] auto get_topology() const -> vk::PrimitiveTopology final { return vk::PrimitiveTopology::eTriangleList; }
 
    void create(float radius = default_radius_v, kvf::Color color = kvf::white_v);
 
    std::array<Vertex, vertex_count_v> vertices{};
};
} // namespace le::shape