added three little programs for generating dragon curve ascii-art.

lineplot and turn2line can be used for other stuff, but some constants will need to be changed. also they were golfed. so have fun.

1 files changed, 16 insertions, 0 deletions

diff --git a/src/bin/turn2line.c b/src/bin/turn2line.c
new file mode 100644
index 0000000..3dc190a
--- /dev/null
+++ b/src/bin/turn2line.c
@@ -0,0 +1,16 @@
+#include <stdio.h>
+int main(int argc,char *argv[]) {
+ int in,x=0,dx,y=0,dy,h=0,dh=argc<2?-1:atoi(argv[1]);
+ for(;(in=fgetc(stdin)) != -1;dh=-1,x+=dx,y+=dy) {
+  if(dh == -1) {
+   dh=-4;
+   switch(in) { case'B':dh++;case'm':dh++;case'L':dh++;case'l':dh++;
+     case'F':dh++;case'r':dh++;case'R':dh++;case's':dh++;default:break; }
+   if(dh==-4) continue;
+  }
+  h=(h+8+dh)%8;
+  dx=(signed char)"\x01\x01\x00\xff\xff\xff\x00\x01"[h%8];
+  dy=(signed char)"\x00\x01\x01\x01\x00\xff\xff\xff"[h%8];
+  printf("%d %d %d %d\n",x,y,x+dx,y+dy);
+ }
+}