Vertex.cpp

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#include <algorithm>
 
#include "Vertex.hpp"
 
namespace galaxy
{
    namespace graphics
    {
        std::vector<Vertex> gen_quad_vertices(const float width, const float height, float depth) noexcept
        {
            depth = std::clamp(depth, -1.0f, 1.0f);
 
            // clang-format off
            const std::vector<Vertex> vertices = 
            {
                Vertex {
                    .m_pos    = glm::vec3 {0.0f, 0.0f, depth}, 
                    .m_texels = glm::vec2 {0.0f, 0.0f},
                    .m_index = 0
                },
                Vertex {
                    .m_pos    = glm::vec3 {width, 0.0f, depth},
                    .m_texels = glm::vec2 {1.0f, 0.0f},
                    .m_index = 0
                },
                Vertex {
                    .m_pos    = glm::vec3 {width, height, depth},
                    .m_texels = glm::vec2 {1.0f, 1.0f},
                    .m_index = 0
                },
                Vertex {
                    .m_pos    = glm::vec3 {0.0f, height, depth},
                    .m_texels = glm::vec2 {0.0f, 1.0f},
                    .m_index = 0
                }
            };
            // clang-format on
 
            return vertices;
        }
 
        std::vector<unsigned int> gen_default_indices() noexcept
        {
            return {0u, 1u, 3u, 1u, 2u, 3u};
        }
    } // namespace graphics
} // namespace galaxy