Notices by P_Malin (p_malin@mastodon.gamedev.place)

My superhero power is gamma-vision.
It's not that exciting; it just means I can diagnose sRGB bugs from the other side of the room.

REM Based on an Akiyoshi Kitaoka illusion - "Red Cushion"
MODE0
VDU19,0,7;0;19,1,1;0;5
DIMl(511)
FORx=0TO511
t=x/511
l(x)=ACS(t*2-1)/3.14
NEXT
FORx=0TO511
FORy=0TO255
u=l(x)*15
v=l(y+y)*15
P=INTu
Q=INTv
p=u-P
q=v-Q
c=0
IF((P+Q)AND1)=0c=1-c
sx=p-.5
sy=q-.5
cx=ABS(ABSsx-.3)
cy=ABS(ABSsy-.3)
IFx<256 sx=-sx
IFy<128 sy=-sy
IF(SGN(sx)<>SGN(sy)OR(P=7ANDQ=7))IF(cx<.14ANDcy<.14)c=1-c
GCOL0,c
PLOT69,128+x*2,y*4
NEXT,
REPEATUNTIL0
REM #BBCMicroBot 🚀

ô01377764
ë2
B=Ɠ
H=300
ãi=0¸H
çi<8ï5,19,i,i?(Ɛ+5)-48;0;
B!³(B*2)=1285
í
ãj=99¸B
X=³(1):Y=³(1)
ç³(9)>5ƌC=-³(2):Y=-(Y^4)ƋC=1:Y=-ª(Y^.3)
A=.2:S=4
ãk%=0¸2
X=X+¤N(X+Y*3)+¤N(Y)
Y=Y+¤N(Y+X*3)+¤N(X)
S=S+S
A=A/2
í
çj>B-H ƌX=³(6)/6:Y=Y/3:C=0ƋY=Y+.5
X=X*¯*2
s=650+µX*Y*H
t=650+ƛX*Y*H-s/4
æ0,C+°s,t)ƀ7
çC=0æ0,4
ð69,s,t
í
õý£
ݤN(x)
x=x*S
f=x-¨x
i=99*¨x
a=µi
b=µ(i+99)
=((a-¨a)*(1-f)+(b-¨b)*f)*A
ô #BBCMicroBot 🚀

Cool, I found Mastodon HQ on StreetView

https://www.google.co.uk/maps/@51.4198439,-0.1616381,3a,32.8y,77.17h,87.41t/data=!3m6!1e1!3m4!1s0c8GUNCroXpIIwZvAdsu6Q!2e0!7i16384!8i8192