Group.h

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// Copyright © 2008-2024 Pioneer Developers. See AUTHORS.txt for details
// Licensed under the terms of the GPL v3. See licenses/GPL-3.txt
 
#ifndef _SCENEGRAPH_GROUP_H
#define _SCENEGRAPH_GROUP_H
 
#include "Node.h"
#include "matrix4x4.h"
#include <vector>
 
namespace SceneGraph {
 
    class Group : public Node {
    public:
        Group(Graphics::Renderer *r);
        Group(const Group &, NodeCopyCache *cache = 0);
        virtual Node *Clone(NodeCopyCache *cache = 0) override;
        virtual const char *GetTypeName() const override { return "Group"; }
        virtual void Save(NodeDatabase &) override;
        static Group *Load(NodeDatabase &);
 
        virtual void AddChild(Node *child);
        virtual bool RemoveChild(Node *node); //true on success
        virtual bool RemoveChildAt(unsigned int position); //true on success
        unsigned int GetNumChildren() const { return static_cast<Uint32>(m_children.size()); }
        Node *GetChildAt(unsigned int);
        virtual void Accept(NodeVisitor &v) override;
        virtual void Traverse(NodeVisitor &v) override;
        virtual void Render(const matrix4x4f &trans, const RenderData *rd) override;
        virtual void Render(const std::vector<matrix4x4f> &trans, const RenderData *rd) override;
        virtual Node *FindNode(const std::string &) override;
 
        // Walk the node hierarchy to the root of the model and compute the global transform of this node.
        // The result of this *should* be cached if the model has not changed
        virtual matrix4x4f CalcGlobalTransform() const;
 
    protected:
        virtual ~Group();
        virtual void RenderChildren(const matrix4x4f &trans, const RenderData *rd);
        virtual void RenderChildren(const std::vector<matrix4x4f> &trans, const RenderData *rd);
        std::vector<Node *> m_children;
    };
 
} // namespace SceneGraph
 
#endif