-
-
Save skeeto/45d825c01b00c10452634933d03e766d to your computer and use it in GitHub Desktop.
Mystery obfuscated C program (by yours truly)
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/**** cc -Ofast x.c -lm && ./a.out | mpv --no-correct-pts --fps=60 --fs - ****/ | |
#include<math.h> | |
#include<stdio.h> | |
#include<string.h> | |
#define L long | |
#define F float | |
#define T 4e-3f | |
#define X(x,y,z) 10*(y-x) | |
#define Y(x,y,z) x*(28-z)-y | |
#define Z(x,y,z) x*y-2.6666667f*z | |
typedef struct{L x,y;}P;typedef struct{F x,y,z;}C;P g(C p,F o,F e){F x=p.x*cosf | |
(o)-p.y*sinf(o),y=p.x*sinf(o)+p.y*cosf(o);return(P){20*x+960,20*(y*sinf(e)+(p.z | |
-28)*cosf(e))+540};}char B[02070][03600][3];D(L x,L y,L c){y<02070ul&&(B[y][x][ | |
0]=c>>16)&&(B[y][x][1]=c>>8)&&(B[y][x][2]=c);}l(P a,P b,L c){L dx=fabsf(b.x-a.x | |
),dy=fabsf(b.y-a.y),sx=b.x<a.x?-1:1,sy=b.y<a.y?-1:1;if(dx>dy){L d=2*dy-dx,x,y=a | |
.y;for(x=a.x;x!=b.x;x+=sx){D(x,y,c);if(d>0){y+=sy;d-=2*dx;}d+=2*dy;}}else{L d=2 | |
*dx-dy,x=a.x,y;for(y=a.y;y!=b.y;y+=sy){D(x,y,c);if(d>0){x+=sx;d-=2*dy;}d+=2*dx; | |
}}D(b.x,b.y,c);}C S(C s){F x=s.x,y=s.y,z=s.z,a=X(x,y,z),b=Y(x,y,z),c=Z(x,y,z),d | |
=x+a*T/2,e=y+b*T/2,f=z+c*T/2,g=X(d,e,f),h=Y(d,e,f),i=Z(d,e,f),j=x+g*T/2,k=y+h*T | |
/2,l=z+i*T/2,m=X(j,k,l),n=Y(j,k,l),o=Z(j,k,l),p=x+m*T,q=y+n*T,r=z+o*T,t=X(p,q,r | |
),u=Y(p,q,r),v=Z(p,q,r);s.x=x+(a+2*g+2*m+t)*T/6;s.y=y+(b+2*h+2*n+u)*T/6;s.z=z+( | |
c+2*i+2*o+v)*T/6;return s;}main(){L c[256],s=1;L n,i,j,h=0,t=0;static C p[256][ | |
64];F o=0,v=0,e;for(i=0;i<256;i++){c[i]=(s*=0x9c15df3dul)>>8|0x404040;p[i][0].x | |
=p[i][0].y=25+i*1e-4f;}for(;;){memset(B,0,sizeof(B));n=(h+1)%64;if(n==t)t=(t+1) | |
%64;e=sinf(v)*0.5f;for(i=0;i<256;i++){p[i][n]=S(p[i][h]);for(j=h;j!=t;j=(j+64-1 | |
)%64){P a=g(p[i][j],o,e),b=g(p[i][(j+64-1)%64],o,e);l(a,b,c[i]);}}h=n;puts("P6" | |
"\n1920\0401080\012255");fwrite(B,sizeof(B),1,stdout);v+=0.01f;o+=2.8285e-3f;}} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment