71 lines
2.1 KiB
C++
71 lines
2.1 KiB
C++
/**
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* Defines a mesh, ready to be OpenGL-rendered
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**/
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#pragma once
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#include <vector>
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#include <unordered_map>
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#include <cstddef> // size_t
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#include "common_structures.hpp"
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class Mesh {
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public:
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Mesh();
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/// Adds a fresh vertice at `pt`, and returns its ID for further use
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size_t add_vertice(const Point& pt);
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size_t add_vertice(const Point& pt, const Point& normal);
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/// Creates a new face out of the three given point IDs
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void add_face(const Face& face);
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void add_face(size_t f1, size_t f2, size_t f3);
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/// Center manipulation
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const Point& get_center() const;
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void set_center(const Point& pt);
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void translate(const Point& tr); ///< Translate by the vector `tr`
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/** Translates the vertices to make (0, 0, 0) the mesh's barycenter.
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* If `keep_position == true`, this also sets the center to the
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* previous barycenter.
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*/
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void normalize_center(bool keep_position=false);
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/// Get the normal vector for vertice `vert_id`
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const Point& get_normal(size_t vert_id);
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/// Gets the various vertices
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const std::vector<Point>& get_vertices() const;
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/// Gets the various faces
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const std::vector<Face>& get_faces() const;
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const Color& get_color() const { return color; }
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void set_color(const Color& _color) { color = _color; }
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private: //struct
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struct NormalVect {
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NormalVect(const Point& vect, bool manual=false)
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: vect(vect), dirty(false), manual(manual) {}
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NormalVect()
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: vect(Point(0., 0., 0.)), dirty(true), manual(false) {}
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Point vect;
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bool dirty;
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bool manual;
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};
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private: //meth
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size_t inner_add_vertice(const Point& pt, const NormalVect& normal);
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void compute_normal(size_t vert);
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private:
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std::vector<Point> vertices;
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std::vector<NormalVect> normals;
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std::vector<Face> faces;
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std::vector<std::vector<size_t> > faces_with_vert;
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Point center;
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Color color;
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};
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