Node.h

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// Copyright © 2008-2023 Pioneer Developers. See AUTHORS.txt for details
// Licensed under the terms of the GPL v3. See licenses/GPL-3.txt
 
#ifndef _NODE_H
#define _NODE_H
/*
 * Generic node for the model scenegraph
 */
#include "RefCounted.h"
#include "graphics/Material.h"
#include "libs.h"
 
namespace Graphics {
    class Renderer;
}
 
namespace Serializer {
    class Reader;
    class Writer;
} // namespace Serializer
 
namespace SceneGraph {
 
    class BaseLoader;
    class NodeVisitor;
    class NodeCopyCache;
    class Model;
 
    //Node traversal mask - for other
    //purposes, use NodeFlags
    enum NodeMask {
        NODE_SOLID = 0x1,
        NODE_TRANSPARENT = 0x2,
        MASK_IGNORE = 0x4
    };
 
    //misc flags to identify features
    enum NodeFlags {
        NODE_TAG = 0x1,
        NODE_DECAL = 0x2
    };
 
    //Small structure used internally to pass rendering data
    struct RenderData {
        float linthrust[3]; // 1.0 to -1.0
        float angthrust[3]; // 1.0 to -1.0
        Color customColor;
 
        float boundingRadius; //updated by model and passed to submodels
        unsigned int nodemask;
 
        RenderData() :
            linthrust(),
            angthrust(),
            boundingRadius(0.f),
            nodemask(NODE_SOLID) //draw solids
        {
        }
    };
 
    //Collection of stuff nodes need for serialization -
    //makes maintaining function signatures easier
    struct NodeDatabase {
        Serializer::Writer *wr;
        Serializer::Reader *rd;
        //  Graphics::Renderer *renderer;
        Model *model;
        std::vector<std::pair<std::string, RefCountedPtr<Graphics::Material>>> *materials;
        BaseLoader *loader;
    };
 
    class Node : public RefCounted {
    public:
        Node(Graphics::Renderer *r);
        Node(Graphics::Renderer *r, unsigned int nodemask);
        Node(const Node &, NodeCopyCache *);
        virtual Node *Clone(NodeCopyCache *) = 0; //implement clone to return shallow or deep copy
        virtual const char *GetTypeName() const { return "Node"; }
        virtual void Save(NodeDatabase &);
 
        virtual void Accept(NodeVisitor &v);
        virtual void Traverse(NodeVisitor &v);
        virtual void Render(const matrix4x4f &trans, const RenderData *rd) {}
        virtual void Render(const std::vector<matrix4x4f> &trans, const RenderData *rd) {}
        void DrawAxes();
        void SetName(const std::string &name) { m_name = name; }
        const std::string &GetName() const { return m_name; }
 
        virtual Node *FindNode(const std::string &);
 
        unsigned int GetNodeMask() const { return m_nodeMask; }
        void SetNodeMask(unsigned int m) { m_nodeMask = m; }
 
        unsigned int GetNodeFlags() const { return m_nodeFlags; }
        void SetNodeFlags(unsigned int m) { m_nodeFlags = m; }
 
        Graphics::Renderer *GetRenderer() const { return m_renderer; }
 
    protected:
        //can only to be deleted using DecRefCount
        virtual ~Node();
        std::string m_name;
        unsigned int m_nodeMask;
        unsigned int m_nodeFlags;
        Graphics::Renderer *m_renderer;
    };
 
} // namespace SceneGraph
 
#endif