Vertex.hpp

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#ifndef GALAXY_GRAPHICS_GL_VERTEX_HPP_
#define GALAXY_GRAPHICS_GL_VERTEX_HPP_
 
#include <array>
 
#include <glm/vec2.hpp>
 
#include "galaxy/meta/Concepts.hpp"
 
namespace galaxy
{
    struct Vertex final
    {
        glm::vec2 m_pos;
 
        glm::vec2 m_texels;
    };
 
    namespace graphics
    {
        std::array<Vertex, 4> gen_quad_vertices(const float width, const float height) noexcept;
 
        std::array<unsigned int, 6> gen_default_indices() noexcept;
 
        template<meta::is_arithmetic Type>
        [[nodiscard]]
        inline float map_x_texel(const Type x, const float width) noexcept
        {
            return static_cast<float>(x) / width;
        }
 
        template<meta::is_arithmetic Type>
        [[nodiscard]]
        inline float map_y_texel(const Type y, const float height) noexcept
        {
            return static_cast<float>(y) / height;
        }
    } // namespace graphics
} // namespace galaxy
 
#endif