GALERIE
EN COURS
SCENES
MACROS
GUIDE
PORTFOLIO
A PROPOS
Courbes paramétriques
x
=
c
o
s
(
a
t
)
−
c
o
s
(
b
t
)
j
y
=
s
i
n
(
c
t
)
−
s
i
n
(
d
t
)
k
a
=
1
,
b
=
80
,
c
=
1
,
d
=
80
a
=
80
,
b
=
1
,
c
=
1
,
d
=
80
a
=
80
,
b
=
1
,
c
=
80
,
d
=
1
a
=
1
,
b
=
100
,
c
=
1
,
d
=
50
r
=
c
o
s
(
a
t
)
p
+
s
i
n
(
n
a
t
)
q
x
=
r
c
o
s
(
t
)
y
=
r
s
i
n
(
t
)