#!/usr/bin/env python3
R=range
import curses as B,math as A,time as K,random as b
def C(C):
	L=True;C.nodelay(L);B.curs_set(0);S=False
	if B.has_colors():
		S=L;B.start_color();T=[B.COLOR_BLUE,B.COLOR_CYAN,B.COLOR_GREEN,B.COLOR_YELLOW,B.COLOR_MAGENTA,B.COLOR_RED,B.COLOR_WHITE]
		for(c,d)in enumerate(T):B.init_pair(c+1,d,B.COLOR_BLACK)
		e=len(T)
	U=' .:-=+*#%@';D=0;E=0;V=3;M=K.time();f=5
	while L:
		W,X=C.getmaxyx();g,h=X/2,W/2;H=2.
		for F in R(W):
			for G in R(X-1):
				I=G-g;J=F-h
				if E==0:i=A.sin(G/H+D);j=A.cos(F/H-D);k=A.sin(A.sqrt(I*I+J*J)/H-D);l=A.atan2(J,I);m=A.sin(l+D);N=A.sin((G+F)/H+D);O=i+j+k+m+N
				elif E==1:O=A.sin((G+D)*.3)+A.sin((F-D)*.3)+A.sin((G+F)*.1+D)
				else:Y=A.sqrt(I*I+J*J);O=A.sin(Y/H-D)+A.cos(Y/H+D)+A.sin(A.atan2(J,I)*4+D)
				n=A.sin(O);o=(n+1)/2;Z=int(o*(len(U)-1));a=U[Z]
				try:
					if S:N=Z%e;C.addch(F,G,a,B.color_pair(N+1))
					else:C.addch(F,G,a)
				except B.error:pass
		C.refresh();D+=.1;K.sleep(.05);P=C.getch()
		if P!=-1:
			try:
				if chr(P).lower()=='q':break
				elif chr(P)==' ':E=(E+1)%V;M=K.time()
			except:pass
		if K.time()-M>f:
			Q=E
			while Q==E:Q=b.randint(0,V-1)
			E=Q;M=K.time()
if __name__=='__main__':
	try:B.wrapper(C)
	except KeyboardInterrupt:pass