scene_graph.h

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/*
 *  OGF/Graphite: Geometry and Graphics Programming Library + Utilities
 *  Copyright (C) 2000 Bruno Levy
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *  If you modify this software, you should include a notice giving the
 *  name of the person performing the modification, the date of modification,
 *  and the reason for such modification.
 *
 *  Contact: Bruno Levy
 *
 *     levy@loria.fr
 *
 *     ISA Project
 *     LORIA, INRIA Lorraine,
 *     Campus Scientifique, BP 239
 *     54506 VANDOEUVRE LES NANCY CEDEX
 *     FRANCE
 *
 *  Note that the GNU General Public License does not permit incorporating
 *  the Software into proprietary programs.
 */
 
 
#ifndef H_OGF_SCENE_GRAPH_TYPES_SCENE_GRAPH_H
#define H_OGF_SCENE_GRAPH_TYPES_SCENE_GRAPH_H
 
#include <OGF/scene_graph/common/common.h>
#include <OGF/scene_graph/grob/composite_grob.h>
#include <OGF/gom/types/node.h>
 
namespace OGF {
 
    class Grob;
    class RenderingContext;
 
/*************************************************************************/
 
    gom_class SCENE_GRAPH_API SceneGraph : public CompositeGrob {
    public:
 
        SceneGraph(
            Interpreter* interpreter = nullptr,
            bool transfer_ownership_to_scenegraph_library=false
        );
 
         ~SceneGraph() override;
 
 
    gom_slots:
 
        Grob* current();
 
        void set_current(const GrobName& grob);
 
        void delete_object(const GrobName& grob);
 
        void delete_current();
 
        void delete_selected();
 
        void delete_all();
 
        void move_object_up(const GrobName& grob);
 
        void move_object_down(const GrobName& grob);
 
        void move_object_to_top(const GrobName& grob);
 
        void move_object_to_bottom(const GrobName& grob);
 
 
        void move_selection_up();
 
        void move_selection_down();
 
        void move_selection_to_top();
 
        void move_selection_to_bottom();
 
 
        void rename_object(
            const GrobName& grob, const std::string& new_name
        );
 
        Grob* duplicate_object(const GrobName& grob);
 
 
        /*************************************/
 
        void clear() override;
 
        void delete_current_object();
 
        Grob* duplicate_current();
 
        void move_current_up();
 
        void move_current_down();
 
        void move_current_to_top();
 
        void move_current_to_bottom();
 
        Grob* load_object(
            const FileName& filename, const std::string& type="default",
            bool change_cwd=false
        );
 
        void load_objects(
            const std::string& filenames, const std::string& type="default",
            bool change_cwd=false
        );
 
        bool save_current_object(const NewFileName& filename);
 
        bool save_viewer_properties(const std::string& filename);
 
        Grob* create_object(
            const GrobClassName& classname="OGF::MeshGrob",
            const std::string& name = "new_object"
        );
 
        Grob* create_mesh(const std::string& name = "") {
            return create_object("OGF::MeshGrob",name);
        }
 
        Grob* find_or_create_object(
            const GrobClassName& classname, const std::string& name
        );
 
 
        void register_grob_commands(
            MetaClass* grob_class, MetaClass* commands_class
        );
 
    gom_properties:
        void set_current_object(const GrobName& value);
 
        const GrobName& get_current_object() const;
 
        std::string get_values() const;
 
        void set_render_area(Object* rdra) {
            render_area_ = rdra;
        }
 
        Object* get_render_area() const {
            return render_area_;
        }
 
        void set_application(Object* app) {
            application_ = app;
        }
 
        Object* get_application() const {
            return application_;
        }
 
        void set_scene_graph_shader_manager(Object* sgshdmgr);
 
        Object* get_scene_graph_shader_manager() const;
 
 
    public:
        void update() override;
 
        void update_values();
 
         bool is_serializable() const override;
 
         bool serialize_read(InputGraphiteFile& in) override;
 
         bool serialize_write(OutputGraphiteFile& out) override;
 
        Interpreter* interpreter() override;
 
    gom_signals:
        virtual void values_changed(const std::string& value);
 
        void value_changed(Grob* value) override;
 
        virtual void current_object_changed(const std::string& value);
 
    public:
        bool invoke_method(
            const std::string& method_name,
            const ArgList& args, Any& ret_val
        ) override;
 
    protected:
        static bool load_aln(const std::string& filename, SceneGraph* sg);
 
        void begin_graphite_file(
            OutputGraphiteFile& out, bool all_scene
        );
 
        void end_graphite_file(OutputGraphiteFile& out);
 
        void serialize_grob_write(
            Grob* grob, OutputGraphiteFile& out
        );
 
        Grob* serialize_grob_read(
            InputGraphiteFile& in
        );
 
        void get_grob_shader(
            Grob* grob, std::string& classname, ArgList& properties
        );
 
        void set_grob_shader(
            Grob* grob, const std::string& classname, const ArgList& properties
        );
 
        void copy_property_to_arglist(
            const std::string& obj_prop_name, ArgList& args
        );
 
        void copy_arglist_to_properties(const ArgList& args);
 
    private:
        GrobName current_object_name_;
        Interpreter* interpreter_;
        Object* render_area_;
        Object* application_;
        Object_var scene_graph_shader_manager_;
    };
 
/*************************************************************************/
 
}
#endif