lua_grob.h

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/*
 *  OGF/Graphite: Geometry and Graphics Programming Library + Utilities
 *  Copyright (C) 2000-2009 INRIA - Project ALICE
 *
 *  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
 *
 *     Project ALICE
 *     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. 
 *
 * As an exception to the GPL, Graphite can be linked 
 *  with the following (non-GPL) libraries:
 *     Qt, SuperLU, WildMagic and CGAL
 */
 
 
#ifndef H_OGF_GRAPHITE_LUAGROB_LUA_GROB_H
#define H_OGF_GRAPHITE_LUAGROB_LUA_GROB_H
 
#include <OGF/luagrob/common/common.h>
#include <OGF/scene_graph/grob/grob.h>
 
#ifdef GOMGEN
typedef int lua_State;
#else
extern "C" {
#include <geogram/third_party/lua/lua.h>
}
#endif
 
namespace OGF {
 
    gom_class LUAGROB_API LuaGrob : public Grob {
    public:
        LuaGrob(CompositeGrob* parent);
 
        ~LuaGrob() override;
 
        bool shader_OK() const {
            return !lua_error_occured_;
        }
        
    gom_properties:
 
        bool get_autorun() const {
            return autorun_;
        }
 
        void set_autorun(bool x) {
            autorun_ = x;
        }
        
        void set_source(const std::string& source) {
            source_ = source;
        }
 
        const std::string& get_source() const {
            return source_;
        }
        
        void set_shader_source(const std::string& source) {
            shader_source_ = source;
            execute_shader_program();
        }
 
        const std::string& get_shader_source() const {
            return shader_source_;
        }
 
        
    gom_slots:
 
        void execute_program();
        
        bool execute_shader_command(const std::string& value);
 
        void execute_shader_program();
 
        void load_program_source(const std::string& value);
 
        void save_program_source(const std::string& value);
        
        void load_shader_source(const std::string& value);
 
        void save_shader_source(const std::string& value);
        
    public:
        
        void set_box(const Box3d& box);
 
        void clear() override;
 
        Grob* duplicate(SceneGraph* sg) override;
 
        bool is_serializable() const override;
 
        bool serialize_read(InputGraphiteFile& geofile) override;
 
        bool serialize_write(OutputGraphiteFile& geofile) override;
 
        void update() override;
 
        Box3d bbox() const override;
 
        static LuaGrob* find_or_create(
            SceneGraph* sg, const std::string& name
        );
 
        static LuaGrob* find(SceneGraph* sg, const std::string& name);
 
    private:
        lua_State* lua_shader_state_;
        bool lua_error_occured_;
        Box3d box_;
        bool autorun_;
        std::string source_;
        std::string shader_source_;
    };
 
    typedef Name<LuaGrob*> LuaGrobName;
 
    typedef Name<LuaGrob*,true> NewLuaGrobName;
}
#endif