nausea

commit a05e0aeeb6fedda57e74080100b7dea2a1645f65
parent ab89793de3a11578c34be357ca8755932be4b24d
Author: lostd <lostd@2f30.org>
Date:   Sun, 10 May 2015 01:33:24 +0300

Draw nothing on zero input

Diffstat:
M
nausea.c
 | 
7
++++++-

1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/nausea.c b/nausea.c
@@ -449,6 +449,12 @@ draw_boom(struct frame *fr)
 	unsigned dim, cx, cy, cur, r;
 	double avg = 0;
 
+	erase();
+
+	/* no samples at all */
+	if (fr->gotsamples == 0)
+		return;
+
 	/* read dimensions to catch window resize */
 	fr->width = COLS;
 	fr->height = LINES;
@@ -481,7 +487,6 @@ draw_boom(struct frame *fr)
 	cx = fr->width / 2;
 	cy = fr->height / 2;
 
-	erase();
 	attron(A_BOLD);
 	setcolor(1, fr->height - 3 * r);
 	/* put the center point */