From 553a9c34e11562d7e99bf0cf1abba33d2dd1af74 Mon Sep 17 00:00:00 2001
From: Vince Weaver <vincent.weaver@maine.edu>
Date: Sat, 16 Oct 2021 15:40:00 -0400
Subject: [PATCH] plasma: add helper

---
 graphics/gr/plasma/make_sine.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 graphics/gr/plasma/make_sine.c

diff --git a/graphics/gr/plasma/make_sine.c b/graphics/gr/plasma/make_sine.c
new file mode 100644
index 00000000..6efefc0a
--- /dev/null
+++ b/graphics/gr/plasma/make_sine.c
@@ -0,0 +1,22 @@
+#include <stdio.h>
+#include <math.h>
+
+#define PI 3.14159265358979323846264338327950
+
+int main(int argc, char **argv) {
+
+	double d;
+	int i,r;
+
+	for(i=0;i<16;i++) {
+
+		d=(((double)i)*2.0*PI)/16.0;
+
+		r=32*sin(d);
+
+		printf("%i, %02X\n",i,r);
+
+	}
+
+	return 0;
+}