convex_polygon_mesh.hpp

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#ifndef GENERATOR_CONVEX_POLYGON_MESH_HPP
#define GENERATOR_CONVEX_POLYGON_MESH_HPP
 
#include <vector>
 
#include "math.hpp"
 
#include "mesh_vertex.hpp"
#include "triangle.hpp"
 
namespace generator
{
 
class convex_polygon_mesh_t
{
private:
    class triangles_t
    {
    public:
        bool done() const noexcept;
        triangle_t generate() const;
        void next();
 
    private:
        const convex_polygon_mesh_t* mesh_;
 
        bool odd_;
 
        int segment_index_;
 
        int side_index_;
 
        int ring_index_;
 
        explicit triangles_t(const convex_polygon_mesh_t&) noexcept;
 
        friend class convex_polygon_mesh_t;
    };
 
    class vertices_t
    {
    public:
        bool done() const noexcept;
        mesh_vertex_t generate() const;
        void next();
 
    private:
        const convex_polygon_mesh_t* mesh_;
 
        bool center_done_;
 
        int segment_index_;
 
        int side_index_;
 
        int ring_index_;
 
        explicit vertices_t(const convex_polygon_mesh_t&) noexcept;
 
        friend class convex_polygon_mesh_t;
    };
 
    std::vector<gml::dvec3> vertices_;
 
    int segments_;
 
    int rings_;
 
    gml::dvec3 center_;
 
    gml::dvec3 normal_;
 
    gml::dvec3 tangent_;
 
    gml::dvec3 bitangent_;
 
    gml::dvec2 tex_delta_;
 
public:
    explicit convex_polygon_mesh_t(double radius = 1.0, int sides = 5, int segments = 4, int rings = 4) noexcept;
 
    explicit convex_polygon_mesh_t(const std::vector<gml::dvec2>& vertices, int segments = 1, int rings = 1) noexcept;
 
    explicit convex_polygon_mesh_t(std::vector<gml::dvec3> vertices, int segments = 1, int rings = 1) noexcept;
 
    triangles_t triangles() const noexcept;
 
    vertices_t vertices() const noexcept;
};
} // namespace generator
 
#endif