Calculo de self.NP Pontos da Curva

    def Rs(self):
        #Calculate self.NP points for parameter values between
        #self.t1 and self.t2
        dt=(self.t2-self.t1)/(1.0*(self.NP-1))

        #Store in self.rs and self.ts
        self.rs=[]
        self.ts=[]
        
        t=self.t1
        for i in range( self.NP ):
            self.rs.append( self.R(t) )
            self.ts.append(t)
            
            t+=dt

        self.Curve_MinMax()
        
        return self.rs

    PMin=Vector([0.0,0.0])
    PMax=Vector([0.0,0.0])