A couple of mods:
the clifford torus (with assymetry for effect)
the 5-cell (this one is confusing but looks correct to me, idk)
the clifford torus (with assymetry for effect)
Code: (Select All)
dim shared pi, p, q, d, z0, t, f, sw, sh
sw = 800
sh = 600
d = 700
z0 = 1500
pi = 4*atn(1)
screen _newimage(sw, sh, 32)
sv = 2*pi/30
su = 2*pi/10
'do
for t = 0 to 2*pi step 0.01
cls
u = 0
for v=0 to 2*pi+sv step sv
x = cos(u)
y = sin(u)
z = cos(v)
w = sin(v)
proj x, y, z, w
pset (p, q)
for u=0 to 2*pi+su step su
x = cos(u)
y = sin(u)
z = cos(v)
w = sin(v)
proj x, y, z, w
line -(p, q)
next
next
for u=0 to 2*pi+su step su
x = cos(u)
y = sin(u)
z = cos(v)
w = sin(v)
proj x, y, z, w
pset (p, q), _rgb(255,0,0)
for v=0 to 2*pi+sv step sv
x = cos(u)
y = sin(u)
z = cos(v)
w = sin(v)
proj x, y, z, w
line -(p, q), _rgb(255,0,0)
next
next
_limit 50
next
'loop
sub proj(x, y, z, w)
xx = x
yy = y*cos(t) - w*sin(t)
zz = z
ww = y*sin(t) + w*cos(t)
d2 = 3
w0 = 3
xx = xx*d2/(w0 + ww)
yy = yy*d2/(w0 + ww)
zz = zz*d2/(w0 + ww)
xxx = xx*cos(t) - zz*sin(t)
zzz = xx*sin(t) + zz*cos(t)
xx = xxx
zz = zzz
a = pi/12
b = pi/3
xxx = xx*cos(a) - yy*sin(a)
yyy = xx*sin(a) + yy*cos(a)
xx = xxx
yy = yyy
yyy = yy*cos(b) - zz*sin(b)
zzz = yy*sin(b) + zz*cos(b)
yy = yyy
zz = zzz
xx = 200*xx
yy = 200*yy
zz = 200*zz
p = sw/2 + 2*xx*d/(yy + z0)
q = sh/2 - 2*zz*d/(yy + z0)
end subthe 5-cell (this one is confusing but looks correct to me, idk)
Code: (Select All)
dim shared pi, p, q, d, z0, t, f, sw, sh
sw = 800
sh = 600
d = 700
z0 = 1500
pi = 4*atn(1)
dim x(16), y(16), z(16), w(16)
x(0)=0-1: y(0) =0-1: z(0) =0-1: w(0) = 0-1
x(1)= 1: y(1) =0-1: z(1) =0-1: w(1) = 0-1
x(2)= 1: y(2) = 1: z(2) =0-1: w(2) = 0-1
x(3)=0-1: y(3) = 1: z(3) =0-1: w(3) = 0-1
x(4)=0-1: y(4) =0-1: z(4) =1: w(4) = 0-1
x(5)= 1: y(5) =0-1: z(5) =1: w(5) = 0-1
x(6)= 1: y(6) = 1: z(6) =1: w(6) = 0-1
x(7)=0-1: y(7) = 1: z(7) =1: w(7) = 0-1
x( 8)=0-1: y( 8) =0-1: z( 8) =0-1: w( 8) = 1
x( 9)= 1: y( 9) =0-1: z( 9) =0-1: w( 9) = 1
x(10)= 1: y(10) = 1: z(10) =0-1: w(10) = 1
x(11)=0-1: y(11) = 1: z(11) =0-1: w(11) = 1
x(12)=0-1: y(12) =0-1: z(12) =1: w(12) = 1
x(13)= 1: y(13) =0-1: z(13) =1: w(13) = 1
x(14)= 1: y(14) = 1: z(14) =1: w(14) = 1
x(15)=0-1: y(15) = 1: z(15) =1: w(15) = 1
screen _newimage(sw, sh, 32)
'do
for t = 0 to 2*pi step 0.01
cls
f=0
i = 0
proj x(i), y(i), z(i), w(i)
pset (p, q)
for i=1 to 2
proj x(i), y(i), z(i), w(i)
line -(p, q)
next
i = 0
proj x(i), y(i), z(i), w(i)
line -(p, q)
k = 4
for i=0 to 2
proj x(i), y(i), z(i), w(i)
pset (p, q)
proj x(k), y(k), z(k), w(k)
line -(p, q)
next
for i=0 to 2
proj x(i), y(i), z(i), w(i)
pset (p, q), _rgb(255,0,0)
k = 9
proj x(k), y(k), z(k), w(k)
line -(p, q), _rgb(255,0,0)
next
k = 4
proj x(k), y(k), z(k), w(k)
line -(p, q), _rgb(255,0,0)
_limit 50
next
'loop
sub proj(x, y, z, w)
xx = x
yy = y*cos(t) - w*sin(t)
zz = z
ww = y*sin(t) + w*cos(t)
d2 = 3
w0 = 3
xx = xx*d2/(w0 + ww)
yy = yy*d2/(w0 + ww)
zz = zz*d2/(w0 + ww)
xxx = xx*cos(0) - zz*sin(0)
zzz = xx*sin(0) + zz*cos(0)
xx = xxx
zz = zzz
a = pi/3
b = pi/8
xxx = xx*cos(a) - yy*sin(a)
yyy = xx*sin(a) + yy*cos(a)
xx = xxx
yy = yyy
yyy = yy*cos(b) - zz*sin(b)
zzz = yy*sin(b) + zz*cos(b)
yy = yyy
zz = zzz
xx = 100*xx
yy = 100*yy
zz = 100*zz
p = sw/2 + 2*xx*d/(yy + z0)
q = sh/2 - 2*zz*d/(yy + z0)
end sub