WIP: Duplicated the SLA gizmo for the FDM, removed what was not needed

Clipping plane and the m_model_object pointer keeping was duplicated

src/slic3r/GUI/Gizmos/GLGizmoFdmSupports.hpp

@@ -0,0 +1,87 @@
+#ifndef slic3r_GLGizmoFdmSupports_hpp_
+#define slic3r_GLGizmoFdmSupports_hpp_
+
+#include "GLGizmoBase.hpp"
+
+//#include "libslic3r/SLA/SLACommon.hpp"
+//#include <wx/dialog.h>
+
+#include <cereal/types/vector.hpp>
+
+
+namespace Slic3r {
+namespace GUI {
+
+class ClippingPlane;
+class MeshClipper;
+class MeshRaycaster;
+enum class SLAGizmoEventType : unsigned char;
+
+class GLGizmoFdmSupports : public GLGizmoBase
+{
+private:
+    ModelObject* m_model_object = nullptr;
+    ObjectID m_model_object_id = 0;
+    int m_active_instance = -1;
+    float m_active_instance_bb_radius; // to cache the bb
+    bool unproject_on_mesh(const Vec2d& mouse_pos, std::pair<Vec3f, Vec3f>& pos_and_normal);
+
+
+    GLUquadricObj* m_quadric;
+
+    std::unique_ptr<MeshRaycaster> m_mesh_raycaster;
+    const TriangleMesh* m_mesh;
+    const indexed_triangle_set* m_its;
+    mutable std::vector<Vec2f> m_triangles;
+
+
+public:
+    GLGizmoFdmSupports(GLCanvas3D& parent, const std::string& icon_filename, unsigned int sprite_id);
+    ~GLGizmoFdmSupports() override;
+    void set_fdm_support_data(ModelObject* model_object, const Selection& selection);
+    bool gizmo_event(SLAGizmoEventType action, const Vec2d& mouse_position, bool shift_down, bool alt_down, bool control_down);
+    ClippingPlane get_fdm_clipping_plane() const;
+
+
+private:
+    bool on_init() override;
+    void on_render() const override;
+    void on_render_for_picking() const override;
+
+    void render_clipping_plane(const Selection& selection) const;
+    bool is_mesh_update_necessary() const;
+    void update_mesh();
+
+    float m_clipping_plane_distance = 0.f;
+    std::unique_ptr<ClippingPlane> m_clipping_plane;
+
+    // This map holds all translated description texts, so they can be easily referenced during layout calculations
+    // etc. When language changes, GUI is recreated and this class constructed again, so the change takes effect.
+    std::map<std::string, wxString> m_desc;
+
+    bool m_wait_for_up_event = false;
+    EState m_old_state = Off; // to be able to see that the gizmo has just been closed (see on_set_state)
+
+    mutable std::unique_ptr<MeshClipper> m_object_clipper;
+
+
+    bool is_point_clipped(const Vec3d& point) const;
+    void update_clipping_plane(bool keep_normal = false) const;
+
+protected:
+    void on_set_state() override;
+    void on_start_dragging() override;
+    void on_stop_dragging() override;
+    void on_render_input_window(float x, float y, float bottom_limit) override;
+    std::string on_get_name() const override;
+    bool on_is_activable() const override;
+    bool on_is_selectable() const override;
+    void on_load(cereal::BinaryInputArchive& ar) override;
+    void on_save(cereal::BinaryOutputArchive& ar) const override;
+};
+
+
+} // namespace GUI
+} // namespace Slic3r
+
+#endif // slic3r_GLGizmoFdmSupports_hpp_