1 files changed, 38 insertions(+), 15 deletions(-)

M spiral.c

@@ 1,23 1,46 @@
 #include <u.h>
-#include  <libc.h>
-#include  <draw.h>
-#include  <event.h>
-#include  <cursor.h>
+#include <libc.h>
+#include <draw.h>
+#include <event.h>
+#include <cursor.h>
 
 void
-main(void)
+usage(void)
 {
-	double start, end;
-	double lastcos;
+	fprint(2,"usage: %s\n", argv0);
+	exits("usage");
+}
+
+Point
+Spt(int x, int y)
+{
+	return addpt(Pt(x, y), screen->r.min);
+}
+
+Rectangle
+Srect(int x0, int y0, int x1, int y1)
+{
+	return rectaddpt(Rect(x0, y0, x1, y1), screen->r.min);
+}
+
+void
+main(int argc, char* argv[])
+{
+	Image* drawsrc;
+
+	ARGBEGIN{
+	default:
+		usage();
+	} ARGEND
 
-	lastcos = 1.0;
+	if (initdraw(nil, nil, "spiral") == -1)
+		sysfatal("initdraw: %r");
 
-	start = cputime();
-	for (int i = 0; i < 100000000; i++)
-	{
-		lastcos = cos(lastcos) + 1.0;
-	}
-	end = cputime();
+	drawsrc = allocimagemix(display, DPurpleblue, DPurpleblue);
+	if (!drawsrc)
+		sysfatal("couldn't allocimage!");
 
-	print("Calculating 100,000,000 cosines took %fs\n", end - start);
+	line(screen, Spt(10,10), Spt(50,50), Enddisc, Endsquare, 5, drawsrc, Spt(0,0));
+	flushimage(display, 1);
+	sleep(10*1000);
 }