FacePoint.h

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#pragma once
#include "RichModel.h"
#include <fstream>
using namespace std;
struct FacePoint
{
        int faceID;
        double lamda1, lamda2, lamda3;

        FacePoint(){}
        FacePoint(int faceID, double lamda1, double lamda2)
        : faceID(faceID), lamda1(lamda1), lamda2(lamda2) 
        {
                lamda3 = 1 - lamda1 - lamda2;
        }

        CPoint3D Get3DPoint(const CRichModel& model) const
        {
                return lamda1 * model.GetShiftVertex(model.Face(faceID)[0])
                        + lamda2 * model.GetShiftVertex(model.Face(faceID)[1])
                        + lamda3 * model.GetShiftVertex(model.Face(faceID)[2]);
        }
        pair<double, double> Get2DCoord(const CRichModel& model, int edgeIndex) const
        {
                double x, y;
                if (model.Edge(edgeIndex).indexOfLeftVert == model.Face(faceID)[0])
                {
                        x = lamda1 * 0 + lamda2 * model.Edge(edgeIndex).length + lamda3 * model.Edge(edgeIndex).coordOfOppositeVert.first;
                        y = lamda1 * 0 + lamda2 * 0 + lamda3 * model.Edge(edgeIndex).coordOfOppositeVert.second;
                }
                else if (model.Edge(edgeIndex).indexOfLeftVert == model.Face(faceID)[1])
                {
                        x = lamda2 * 0 + lamda3 * model.Edge(edgeIndex).length + lamda1 * model.Edge(edgeIndex).coordOfOppositeVert.first;
                        y = lamda2 * 0 + lamda3 * 0 + lamda1 * model.Edge(edgeIndex).coordOfOppositeVert.second;
                }
                else
                {
                        x = lamda3 * 0 + lamda1 * model.Edge(edgeIndex).length + lamda2 * model.Edge(edgeIndex).coordOfOppositeVert.first;
                        y = lamda3 * 0 + lamda1 * 0 + lamda2 * model.Edge(edgeIndex).coordOfOppositeVert.second;
                }
                return make_pair(x, y);
        }
};