move functions to mesh

src/Mesh.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <vector>
+#include <ostream>
+
+#include <glm/vec3.hpp>
+#include <glm/vec4.hpp>
+
+void calculateNormals(const std::vector<glm::vec3> &vtx,
+		std::vector<glm::uvec3> &tri, std::vector<glm::vec3> &normals);
+
+void moveToMean(std::vector<glm::vec3> &vtx);
+
+void smooth(std::vector<glm::vec3> &vtx, const std::vector<glm::uvec3> &tri);
+
+void saveAttrib(std::ostream &out, const char *prefix,
+		std::vector<glm::vec3> &elements);
+
+void saveAttrib(std::ostream &out, const char *prefix,
+		std::vector<glm::vec2> &elements);
+
+void saveFaces(std::ostream &out, const std::vector<glm::uvec3> &tris,
+		size_t attribs);
+
+void calculateEdges(const std::vector<glm::vec3> &vtx,
+		std::vector<glm::uvec3> &tri, std::vector<glm::uvec4> &edges);
+
+void computeTangentBasis(std::vector<glm::vec3> & vertices,
+		std::vector<glm::vec2> & uvs, std::vector<glm::vec3> & normals,
+		std::vector<glm::vec3> & tangents, std::vector<glm::vec3> & bitangents);