1 files changed, 177 insertions, 0 deletions
diff --git a/libslang/src/curses/tclock.c b/libslang/src/curses/tclock.c
new file mode 100644
index 0000000..12c0125
--- /dev/null
+++ b/libslang/src/curses/tclock.c
@@ -0,0 +1,177 @@
+#include <stdio.h>
+#include <float.h>
+#include <math.h>
+#include <time.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <curses.h>
+
+/*
+  tclock - analog/digital clock for curses.
+  If it gives you joy, then
+  (a) I'm glad
+  (b) you need to get out more :-)
+
+  This program is copyright Howard Jones, September 1994
+  (ha.jones@ic.ac.uk). It may be freely distributed as
+  long as this copyright message remains intact, and any
+  modifications are clearly marked as such. [In fact, if
+  you modify it, I wouldn't mind the modifications back,
+  especially if they add any nice features. A good one
+  would be a precalc table for the 60 hand positions, so
+  that the floating point stuff can be ditched. As I said,
+  it was a 20 hackup minute job.]
+  
+  COMING SOON: tfishtank. Be the envy of your mac-owning
+  colleagues.  
+*/
+
+/* To compile: cc -o tclock tclock.c -lcurses -lm */
+
+#ifndef PI
+#define PI 3.141592654
+#endif
+
+#define sign(_x) (_x<0?-1:1)
+
+/* Plot a point */
+static void
+plot(int x,int y,char col)
+{
+  mvaddch(y,x,(chtype)col);
+}
+ 
+
+/* Draw a diagonal(arbitrary) line using Bresenham's alogrithm. */
+static void
+dline(int from_x, int from_y, int x2, int y2, char ch)
+{
+	int dx,dy;
+	int ax,ay;
+	int sx,sy;
+	int x,y;
+	int d;
+	
+	dx=x2-from_x;
+	dy=y2-from_y;
+	
+	ax=abs(dx*2);
+	ay=abs(dy*2);
+
+	sx=sign(dx);
+	sy=sign(dy);
+
+	x=from_x;
+	y=from_y;
+		
+	if(ax>ay)
+	{
+		d=ay-(ax/2);
+		
+		while(1)
+		{
+			plot(x,y,ch);
+			if(x==x2) return;
+			
+			if(d>=0)
+			{
+				y+=sy;
+				d-=ax;
+			}
+			x+=sx;
+			d+=ay;			
+		}
+	}
+	else
+	{
+		d=ax-(ay/2);
+		
+		while(1)
+		{
+			plot(x,y,ch);
+			if(y==y2) return;
+			
+			if(d>=0)
+			{
+				x+=sx;
+				d-=ay;
+			}
+			y+=sy;
+			d+=ax;			
+		}	
+	}
+}
+
+int
+main(int argc, char **argv)
+{
+	int i,cx,cy;
+	double mradius, hradius, mangle, hangle;
+	double sangle, sradius, hours;
+	int hdx, hdy;
+	int mdx, mdy;
+	int sdx, sdy;
+	time_t tim;
+	struct tm *t;
+	char szChar[10];
+	
+	initscr();
+	noecho();
+
+	cx=39;
+	cy=12;
+	mradius=9;
+	hradius=6;
+	sradius=8;
+
+	for(i=0;i<12;i++)
+	  {
+	    sangle=(i+1)*(2.0*PI)/12.0;
+	    sradius=10;
+	    sdx=2.0*sradius*sin(sangle);
+	    sdy=sradius*cos(sangle);
+	    sprintf(szChar,"%d",i+1);
+
+	    mvaddstr((int)(cy-sdy),(int)(cx+sdx),szChar);
+	  }
+
+	mvaddstr(0,0,"ASCII Clock by Howard Jones (ha.jones@ic.ac.uk),1994");
+
+	sradius=8;
+	while(1)
+	  {
+	    sleep(1);
+
+	    tim=time(0);
+	    t=localtime(&tim);
+
+	    hours=(t->tm_hour + (t->tm_min/60.0));
+	    if(hours>12.0) hours-=12.0;
+
+	    mangle=(t->tm_min)*(2*PI)/60.0;
+	    mdx=2.0*mradius*sin(mangle);
+	    mdy=mradius*cos(mangle);
+	    
+	    hangle=(hours)*(2.0*PI)/12.0;
+	    hdx=2.0*hradius*sin(hangle);
+	    hdy=hradius*cos(hangle);
+       
+	    sangle=(t->tm_sec%60)*(2.0*PI)/60.0;
+	    sdx=2.0*sradius*sin(sangle);
+	    sdy=sradius*cos(sangle);
+
+	    plot(cx+sdx,cy-sdy,'O');
+	    dline(cx,cy,cx+hdx,cy-hdy,'.');
+	    dline(cx,cy,cx+mdx,cy-mdy,'#');
+
+	    mvaddstr(23,0,ctime(&tim));
+	    
+	    refresh();
+	    plot(cx+sdx,cy-sdy,' ');
+	    dline(cx,cy,cx+hdx,cy-hdy,' ');
+	    dline(cx,cy,cx+mdx,cy-mdy,' ');
+	    
+	  }
+
+	return 0;
+}