GCodeViewer -> Enhanced tool marker + refactoring (added new base class for OpenGL models)

src/slic3r/GUI/GLModel.hpp

@@ -0,0 +1,46 @@
+#ifndef slic3r_GLModel_hpp_
+#define slic3r_GLModel_hpp_
+
+namespace Slic3r {
+
+class TriangleMesh;
+
+namespace GUI {
+
+    struct GLModelInitializationData
+    {
+        std::vector<Vec3f> positions;
+        std::vector<Vec3f> normals;
+        std::vector<Vec3i> triangles;
+    };
+
+    class GL_Model
+    {
+        unsigned int m_vbo_id{ 0 };
+        unsigned int m_ibo_id{ 0 };
+        size_t m_indices_count{ 0 };
+
+    public:
+        virtual ~GL_Model() { reset(); }
+
+        bool init_from(const GLModelInitializationData& data);
+        bool init_from(const TriangleMesh& mesh);
+        void reset();
+        void render() const;
+
+    private:
+        void send_to_gpu(const std::vector<float>& vertices, const std::vector<unsigned int>& indices);
+    };
+
+
+    // create an arrow with cylindrical stem and conical tip, with the given dimensions and resolution
+    // the arrow tip is at 0,0,0
+    // the arrow has its axis of symmetry along the Z axis and is pointing downward
+    GLModelInitializationData stilized_arrow(int resolution, float tip_radius, float tip_height,
+        float stem_radius, float stem_height);
+
+} // namespace GUI
+} // namespace Slic3r
+
+#endif // slic3r_GLModel_hpp_
+