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-rw-r--r--src/wireframe-mesh.hpp37
1 files changed, 14 insertions, 23 deletions
diff --git a/src/wireframe-mesh.hpp b/src/wireframe-mesh.hpp
index 28619e90..855e673a 100644
--- a/src/wireframe-mesh.hpp
+++ b/src/wireframe-mesh.hpp
@@ -14,67 +14,58 @@ namespace Magnum::Examples {
struct tile_shader;
-namespace wireframe_traits {
+namespace wireframe
+{
template<typename T>
concept traits = requires (const T& x) {
{T::num_vertices} -> std::convertible_to<std::size_t>;
- {T::num_indices} -> std::convertible_to<std::size_t>;
{x.primitive} -> std::convertible_to<GL::MeshPrimitive>;
- {x.make_vertex_positions_array() } -> std::same_as<std::array<Vector3, T::num_vertices>>;
- {x.make_index_array() } -> std::same_as<std::array<UnsignedShort, T::num_indices>>;
+ {x.make_vertex_array() } -> std::same_as<std::array<Vector3, T::num_vertices>>;
};
struct null final
{
static constexpr auto primitive = GL::MeshPrimitive::Triangles;
- static constexpr std::size_t num_vertices = 0, num_indices = 0;
+ static constexpr std::size_t num_vertices = 0;
static GL::RectangleTexture make_constant_texture();
- static std::array<Vector3, 0> make_vertex_positions_array() { return {}; }
- static std::array<UnsignedShort, 0> make_index_array() { return {}; }
+ static std::array<Vector3, 0> make_vertex_array() { return {}; }
};
struct quad final
{
- quad(Vector3 center, Vector2 size = {TILE_SIZE[0], TILE_SIZE[1]});
+ quad(Vector3 center, Vector2 size);
constexpr quad() = default;
static constexpr std::size_t num_vertices = 4;
- static constexpr std::size_t num_indices = 0;
static constexpr GL::MeshPrimitive primitive = GL::MeshPrimitive::LineLoop;
using vertex_array = std::array<Vector3, num_vertices>;
- using index_array = std::array<UnsignedShort, num_indices>;
-
- vertex_array make_vertex_positions_array() const;
- static index_array make_index_array() { return {}; }
+ vertex_array make_vertex_array() const;
private:
Vector3 center = {};
Vector2 size = { TILE_SIZE[0], TILE_SIZE[1] };
};
-} // namespace wireframe_traits
-
+} // namespace wireframe
-template<wireframe_traits::traits T>
+template<wireframe::traits T>
struct wireframe_mesh final
{
wireframe_mesh();
void draw(tile_shader& shader, T traits);
private:
- GL::Buffer _positions_buffer{},
- _texcoords_buffer{std::array<Vector2, T::num_vertices>{}},
- _index_buffer{T::num_indices == 0 ? GL::Buffer{NoCreate} : GL::Buffer{}};
- GL::RectangleTexture _texture = wireframe_traits::null::make_constant_texture();
+ GL::Buffer _vertex_buffer{}, _texcoords_buffer{std::array<Vector2, T::num_vertices>{}};
+ GL::RectangleTexture _texture = wireframe::null::make_constant_texture();
GL::Mesh _mesh;
};
-extern template struct wireframe_mesh<wireframe_traits::null>;
-extern template struct wireframe_mesh<wireframe_traits::quad>;
+extern template struct wireframe_mesh<wireframe::null>;
+extern template struct wireframe_mesh<wireframe::quad>;
-using wireframe_quad_mesh = wireframe_mesh<wireframe_traits::quad>;
+using wireframe_quad_mesh = wireframe_mesh<wireframe::quad>;
} // namespace Magnum::Examples