CollisionVisitor.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 _COLLISIONVISITOR_H
#define _COLLISIONVISITOR_H
/*
 * Creates a new collision mesh from CollisionGeometry nodes
 * or the nodes' AABB, when no CGeoms found.
 */
#include "CollMesh.h"
#include "NodeVisitor.h"
#include "libs.h"
 
namespace SceneGraph {
    class Group;
    class MatrixTransform;
    class StaticGeometry;
 
    class CollisionVisitor : public NodeVisitor {
    public:
        CollisionVisitor();
        virtual void ApplyStaticGeometry(StaticGeometry &);
        virtual void ApplyMatrixTransform(MatrixTransform &);
        virtual void ApplyCollisionGeometry(CollisionGeometry &);
        //call after traversal complete
        RefCountedPtr<CollMesh> CreateCollisionMesh();
        float GetBoundingRadius() const { return m_boundingRadius; }
 
    private:
        void ApplyDynamicCollisionGeometry(CollisionGeometry &);
        void AabbToMesh(const Aabb &);
        //geomtree is not built until all nodes are visited and
        //BuildCollMesh called
        RefCountedPtr<CollMesh> m_collMesh;
        std::vector<matrix4x4f> m_matrixStack;
        float m_boundingRadius;
        bool m_properData;
 
        //temporary arrays for static geometry
        std::vector<vector3f> m_vertices;
        std::vector<Uint32> m_indices;
        std::vector<Uint32> m_flags;
 
        Uint32 m_totalTris;
    };
} // namespace SceneGraph
#endif