source: trunk/VUT/GtpVisibilityPreprocessor/include/Polygon3.h @ 235

#ifndef _Polygon3_h__
#define _Polygon3_h__


//#include <iostream>
//#include <math.h>
//#include "common.h"
#include "Containers.h"
#include <queue>

class Mesh;
class Plane3;
class Face;

namespace GtpVisibilityPreprocessor {

/** Class representing a general planar polygon in 3d.
*/
class Polygon3
{
public:
        Polygon3();
        Polygon3(const VertexContainer &vertices);

        /** Copies all the vertices of the face.
        */
        Polygon3(Face *face, Mesh *parent);
        
        /** Returns supporting plane of this polygon.
        */
        Plane3 GetSupportingPlane();

        /** Splits polygon.
                @param partition the split plane
                @param front the front polygon
                @param back the back polygon
                @param splits number of splits
        */
        void Split(Plane3 *partition, Polygon3 *front, Polygon3 *back, int &splits);

        enum {BACK_SIDE, FRONT_SIDE, SPLIT, COINCIDENT};

        /** Side of the plane where the polygon is located.
            @returns one of BACK_SIDE, FRONT_SIDE, SPLIT, COINCIDENT
        */
        int Side(Plane3 *plane);

        /** Deletes all polygons om the queue.
        */
        static void DeletePolygons(PolygonQueue *polys);

        /// vertices are connected in counterclockwise order.
        VertexContainer mVertices;
};

}

#endif