Статья Автор: Пашкина Анна
куб

import turtle as tr
def tran(d):
    ex = (1, 0)
    ey = (0, 1)
    ez = (0.3,0.4)
    x = d[0] * ex[0] + d[1] * ey[0] + d[2] * ez[0]
    y = d[0] * ex[1] + d[1] * ey[1] + d[2] * ez[1]
    return (x,y)
def dot_otnoshenie(A,B,K):
    xyz = []
    for i in range(len(A)):
        xyz.append((A[i]*K[1] + B[i]*K[0])/(K[0]+K[1]))
    return xyz
def punctir(A3,B3,t,dl=0):
    A,B = tran(A3),tran(B3)
    t.up(); t.goto(A)
    if dl==0:
        t.down()
        t.goto(B)
        return
    n = int((((B[0]-A[0])**2+(B[1]-A[1])**2)**0.5)/dl)
    if n%2 == 0: n+=1;
    for i in range(1,n+1):
        if i%2 == 0:
            t.down()
        mn = [i,n-i]
        X = dot_otnoshenie(A,B,mn)
        t.goto(X)
        t.up()
    t.dot(1)
def lines_(a,k,t):
    '''t.up()
    t.goto(tran(k[a[0]]))
    t.down()'''
    for i in range(1,len(a)) :
        punctir(k[a[i]],k[a[i-1]],t)
        '''t.goto(tran(k[p]))
        t.dot(5)
        t.write(p,font=("Courier", 16, "bold"))'''
def dots(a,k,t):
    t.up()
    for i in a:
        t.goto(tran(k[i]))
        t.dot(5)
        t.write(i,font=("Courier", 16, "bold"))
t1 = tr.Pen()
t1.speed(10)
m = 100
stor = [1,2,1]
kub = { 'A': (0, 0, 0), 'B' : (0,0,stor[2]),'C': (stor[0],0,stor[2]),'D' : (stor[0],0,0)}
kub.update({ 'A1': (0, stor[1], 0), 'B1' : (0,stor[1],stor[2]),'C1': (stor[0],stor[1],stor[2]),'D1' : (stor[0],stor[1],0)})
for dot in kub :
    kub[dot] = (kub[dot][0]*m,kub[dot][1]*m,kub[dot][2]*m)
kub['E'] = dot_otnoshenie(kub['A1'],kub['B'],(1,4))
kub['F'] = dot_otnoshenie(kub['A'],kub['D1'],(2,3))
kub['G'] = dot_otnoshenie(kub['D'],kub['C1'],(1,1))
dots(['A','B','C','D','A1','B1','C1','D1'],kub,t1)
lines_(['A','A1','D1','D','A'], kub,t1)
lines_(['A1','B1','C1','D1'], kub,t1)
lines_(['D1','C1','C','D'], kub,t1)
punctir(kub['A'],kub['B'],t1,10)
t1.dot(5)
t1.write('B',font=("Courier", 16, "bold"))
punctir(kub['B1'],kub['B'],t1,10)
punctir(kub['B'],kub['C'],t1,10)
t1.color('red')
lines_(['E','F','G','E'], kub, t1)
tr.done()
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