nome/edge.cpp at master · andyatcal/nome · GitHub

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/**
 * @author Andy Wang, UC Berkeley.
 * Copyright 2016 reserve.
 * UC Berkeley, Slide_2016 project.
 * Advised by Prof. Sequin H. Carlos.
 */

#include "edge.h"

Edge::Edge() {
    va = vb = NULL;
    nextVaFa = nextVaFb = nextVbFa = nextVbFb = NULL;
    fa = fb = NULL;
    edgePoint = NULL;
    isSharp = false;
    mobius = false;
    firstHalf = secondHalf = NULL;
}

Edge::Edge(Vertex * v1, Vertex * v2) {
    va = v1;
    vb = v2;
    nextVaFa = nextVaFb = nextVbFa = nextVbFb = NULL;
    fa = fb = NULL;
    edgePoint = NULL;
    isSharp = false;
    mobius = false;
    firstHalf = secondHalf = NULL;
}

Edge * Edge::nextEdge(Vertex * v, Face * f) {
    if(v == va) {
        if(f == fa) {
            return nextVaFa;
        } else if (f == fb) {
            return nextVaFb;
        }
    } else if(v == vb) {
        if(f == fa) {
            return nextVbFa;
        } else if (f == fb) {
            return nextVbFb;
        }
    }
    cout<<"Error: Invalid search of edge at vertex "<<v -> ID<<"."<<endl;
    exit(0);
}

void Edge::setNextEdge(Vertex * v, Face * f, Edge * nextEdge) {
    if(v == va) {
        if(f == fa) {
            nextVaFa = nextEdge;
            return;
        } else if (f == fb) {
            nextVaFb = nextEdge;
            return;
        }
    } else if(v == vb) {
        if(f == fa) {
            nextVbFa = nextEdge;
            return;
        } else if (f == fb) {
            nextVbFb = nextEdge;
            return;
        }
    }
    cout<<"Error: Invalid set next edge at vertex "<<v -> ID<<"."<<endl;
    exit(0);
}

Vertex * Edge::theOtherVertex(Vertex * v) {
    if(v == va) {
        return vb;
    } else if(v == vb) {
        return va;
    } else {
        cout<<"ERROR: v is not in edge!"<<endl;
        //exit(0);
    }
}

Face * Edge::theOtherFace(Face * f) {
    if(f == fa) {
        return fb;
    } else if(f == fb) {
        return fa;
    } else {
        cout<<"ERROR: f is not adjacent to this edge"<<endl;
        exit(0);
    }
}

Edge * Edge::nextEdgeOfFace(Face * f) {
    if(f == fa) {
        return nextVbFa;
    } else if(f == fb) {
        if(mobius) {
            return nextVbFb;
        } else {
            return nextVaFb;
        }
    } else {
        cout<<"ERROR: f is not adjacent to this edge"<<endl;
        exit(0);
    }
}