C++ (Cpp) PV3D::normalizar示例

PV3D* Malla::calculoNormalNewell(Cara* c){
        GLdouble nx = 0.0;
        GLdouble ny = 0.0;
        GLdouble nz = 0.0;
        PV3D* verticeActual = NULL;
        PV3D* verticeSig = NULL;
        int nV = c->getNumVertices();
        for(int i = 0; i < nV;i++){
                verticeActual = vertices[c->getIndice(i)->get_indiceVertice()];
                verticeSig = vertices[c->getIndice((i+1)%nV)->get_indiceVertice()];
                nx += (verticeActual->getY()-verticeSig->getY())*(verticeActual->getZ()+verticeSig->getZ());
                ny += (verticeActual->getZ()-verticeSig->getZ())*(verticeActual->getX()+verticeSig->getX());
                nz += (verticeActual->getX()-verticeSig->getX())*(verticeActual->getY()+verticeSig->getY());
        }
        PV3D* n = new PV3D(nx,ny,nz,0);
        n->normalizar();
        return n;
}