nedoPC.org

// clock.c - Simple Clock
// Alexander@Shabarshin.com
// 13 Mar 2007

int myround(float f)
{
int i;
i=f;
if(f-i>0.5) i=i+1;
return i;
}

mycircle(int x, int y, int r)
{
int xx,yl,yi;
float yy,dx,dr;
dr=r;dr=dr*dr;yl=0;
for(xx=x-r+1;xx<=x+r;xx++)
{
dx=xx-x;
yy=sqrt(dr-dx*dx);
yi=myround(yy);
line(1,xx-1,y-yl,xx,y-yi);
line(1,xx-1,y+yl,xx,y+yi);
yl=yi;
}
}

strelka(int c, int x, int y, int l, float a)
{
line(c,x,y,x-myround(l*cos(a)),y-myround(l*sin(a)));
}

main()
{
int i,j,g,h,m,x1,y1,x2,y2;
string s;
float fa,fx,fy,fp,fs,fi,fo,fh,fm,fc;
int x=80;
int y=87;
int r=70;
int g0=51;
int g1=58;
int g2=63;
int g3=67;
int s1=35;
int s2=42;
int s3=45;
graph_on();
title("Clock");
textalign(11);
mycircle(x,y,r);
fp=2*asin(1);
fs=fp/30;
i=0;
for(fa=0;fa<fp+fp;fa=fa+fs)
{
if(i>=60) break;
fi=sin(fa);fo=cos(fa);
//puts("@"+fa+" "+fo+":"+fi+"\n");
if(i%5) g=g2;
else
{
g=g1;
j=i/5+3;
if(j>12) j=j-12;
s=j;
text(x+myround(g0*fo),y+myround(g0*fi),s);
}
line(1,x+myround(g*fo),y+myround(g*fi),x+myround(g3*fo),y+myround(g3*fi));
i++;
}
fh=0;fm=0;fc=0;j=0;
while(1)
{
while(1)
{
i=time(2);
h=i/10000;
i=i-h*10000;
m=i/100;
i=i-m*100;
if(i!=j) break;
}
j=i;
strelka(0,x,y,s3,fc);
strelka(0,x,y,s2,fm);
strelka(0,x,y,s1,fh);
fc=(i+15)*fs;
fm=(m+15)*fs;
fh=(h*5+m/12+15)*fs;
strelka(1,x,y,s1,fh);
strelka(1,x,y,s2,fm);
strelka(1,x,y,s3,fc);
}
}