separate all utility headers and sources

cosets/include/files.hpp

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+#pragma once
+
+#include <string>
+
+std::string read_all_text(const std::string &file);

cosets/include/mesh.hpp

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+#pragma once
+
+#include <vector>
+
+#include "coxeter.hpp"
+#include "mirrors.hpp"
+#include "numeric.hpp"
+
+glm::vec4 identity(const std::vector<glm::vec4> &normals, const std::vector<float> &coords);
+
+glm::vec4 identity(const Mults &mults, const std::vector<float> &coords);
+
+glm::vec4 center(const Mults &mults);
+
+std::vector<glm::vec4> vertices(const Table *t_vert, const glm::vec4 ident);
+
+std::vector<int> edges(const Table *t_vert);
+
+std::vector<int> faces(const Table *t_vert);

cosets/include/mirrors.hpp

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+#pragma once
+
+#include <vector>
+#include <glm/glm.hpp>
+#include "coxeter.hpp"
+
+std::vector<glm::vec4> mirror(const Mults &mults);

cosets/include/numeric.hpp

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+#pragma once
+
+#include <glm/glm.hpp>
+#include <vector>
+#include <algorithm>
+
+glm::vec4 round(glm::vec4 f, int prec);
+
+float dot(int n, glm::vec4 a, glm::vec4 b);
+
+glm::vec4 project(glm::vec4 vec, glm::vec4 target);
+
+glm::vec4 reflect(glm::vec4 vec, glm::vec4 axis);
+
+glm::vec4 gram_schmidt_last(std::vector<glm::vec4> vecs);
+
+glm::vec4 barycentric(std::vector<glm::vec4> basis, std::vector<float> coords);
+
+std::vector<glm::vec4> plane_intersections(std::vector<glm::vec4> normals);
+
+
+std::vector<std::vector<int>> combinations(int N, int K);
+
+std::vector<std::vector<int>> combinations(std::vector<int> N, int K);

cosets/include/shader.hpp

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+#pragma once
+
+#include <glad/glad.h>
+#include <string>
+
+GLint build_shader(GLenum type, const std::string &name, const std::string &src);
+
+GLint build_shader_file(GLenum type, const std::string &name, const std::string &file);
+
+GLint build_program(const std::string &name, GLint vs, GLint fs);

cosets/include/window.hpp

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+#pragma once
+
+#include "glad/glad.h"
+#include <GLFW/glfw3.h>
+
+class Window {
+protected:
+   GLFWwindow *_window = nullptr;
+
+public:
+   virtual void init();
+
+   virtual void update();
+
+   virtual void render();
+
+   virtual void deinit();
+
+   void getBounds(int &width, int &height);
+
+   void swapbuffers();
+
+   void run();
+};