polygon.h

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/*
        Scalable Building Simulator - Polygon Object
        The Skyscraper Project - Version 2.0
        Copyright (C)2004-2024 Ryan Thoryk
        https://www.skyscrapersim.net
        https://sourceforge.net/projects/skyscraper/
        Contact - ryan@skyscrapersim.net
 
        This program is free software; you can redistribute it and/or
        modify it under the terms of the GNU General Public License
        as published by the Free Software Foundation; either version 2
        of the License, or (at your option) any later version.
 
        This program is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.
 
        You should have received a copy of the GNU General Public License
        along with this program; if not, write to the Free Software
        Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
 
#ifndef _SBS_POLYGON_H
#define _SBS_POLYGON_H
 
#include <OgrePlane.h>
#include <OgreMatrix3.h>
#include "mesh.h"
#include "triangle.h"
 
namespace SBS {
 
class SBSIMPEXP Polygon : public ObjectBase
{
public:
        struct Geometry
        {
                //basic 3D geometry
                Vector3 vertex;
                Vector2 texel;
                Vector3 normal;
        };
        typedef std::vector<std::vector<Geometry> > GeometrySet;
 
        MeshObject* mesh;
        GeometrySet geometry; //mesh geometry (vertices/texels/normals) container
        int vertex_count;
        std::vector<Triangle> triangles;
        Plane plane; //plane in remote (Ogre) form, relative positioning
 
        //texture mapping matrix and vector
        Matrix3 t_matrix;
        Vector3 t_vector;
 
        std::string material; //polygon material
 
        size_t size; //size in bytes of polygon
 
        Polygon(Object *parent, const std::string &name, MeshObject *meshwrapper, GeometrySet &geometry, std::vector<Triangle> &triangles, Matrix3 &tex_matrix, Vector3 &tex_vector, const std::string &material, Plane &plane);
        ~Polygon();
        void GetTextureMapping(Matrix3 &t_matrix, Vector3 &t_vector);
        bool IntersectSegment(const Vector3 &start, const Vector3 &end, Vector3 &isect, Real *pr, Vector3 &normal);
        bool IntersectRay(const Vector3 &start, const Vector3 &end);
        bool IntersectSegmentPlane(const Vector3 &start, const Vector3 &end, Vector3 &isect, Real *pr, Vector3 &normal);
        void Move(const Vector3 &vector, Real speed = 1.0);
        Plane GetAbsolutePlane();
        Vector2 GetExtents(int coord);
        void ChangeHeight(Real newheight);
        bool ReplaceTexture(const std::string &oldtexture, const std::string &newtexture);
        bool ChangeTexture(const std::string &texture, bool matcheck = true);
        Vector3 GetVertex(int index);
};
 
}
 
#endif