VisMesh.hpp

#pragma once

class Mesh;
class MeshIterator;
class visPolygon;
    
#include "Vis.hpp"
#include <vector>

class Mesh;
class MeshIterator;

class visPolygon
{
    friend class Mesh;
    friend class MeshIterator;

    V3f vertices[10];

    int corners;

    void clip(  V3f point,                                                              // The next point, that has to be clipped.
                vector<V3f> &first, vector<V3f> &s,             // Point buffers
                vector<Plane3f> &clipPlanes, int plane, // Clipping planes
                visPolygon* result);                                    // Clipped points go here

    void closeClip(     vector<V3f> &first, vector<V3f> &s,     // Point buffers
                    vector<Plane3f> &clipPlanes,                // Clipping planes
                    visPolygon* result);                                // Clipped points go here.

    public:

    visPolygon() : corners(0) {};

    void addVertex(V3f vertex);

    void clear();

    void clip(vector<Plane3f> &clipPlanes, visPolygon* result);

    void draw();

    visPolygon(const visPolygon &polygon);
};

class MeshIterator
{
    int polygon;
    int vertex;
    Mesh* parent;

    public:

    MeshIterator(Mesh* parent);

    V3f operator* ();

    void operator++ (int);

    bool operator== (MeshIterator i);
    bool operator!= (MeshIterator i)
    {
        return !(*this == i);
    };

    void reset();
};

class Mesh
{
    friend class MeshIterator;

    vector<visPolygon> polygons;

    public:

    void addPolygon(visPolygon &polygon);

    void clip(vector<Plane3f> &clipPlanes);

    void clear();

    void draw();

    MeshIterator begin()
    {
        return MeshIterator(this);
    };

    static MeshIterator end()
    {
        return MeshIterator(NULL);
    };

};

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