utils

commit: b8fade2c9be9da04735ac311e152f1264e80a714
parent e3ad3e689537fe4ca38ae4fc78c71e745b74a37f
Author: Haelwenn (lanodan) Monnier <contact@hacktivis.me>
Date:   Mon,  5 Apr 2021 02:26:00 +0200

xcd: Fix wrong coloring because of signs

Diffstat:
M
bin/xcd.c
14
++++++++------

1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/bin/xcd.c b/bin/xcd.c
@@ -1,4 +1,4 @@
-// Copyright 2018-2020 Haelwenn (lanodan) Monnier <contact@hacktivis.me>
+// Copyright 2018-2021 Haelwenn (lanodan) Monnier <contact@hacktivis.me>
 // Distributed under the terms of the CC-BY-SA-4.0 license
 
 #define _POSIX_C_SOURCE 200809L
@@ -11,14 +11,14 @@
 #define LANODAN_XCD_RESET printf("");
 #define LANODAN_XCD_PRINT printf(" >%s<", line);
 
-void rainbow(double freq, char i) {
+void rainbow(double freq, unsigned char i) {
 	if(i == 0) {
 		printf("");
 	} else {
 		uint8_t red, green, blue;
 		double pi = 3.14159;
 
-		red = sin(freq*i + 0) * 127 + 128;
+		red = sin(freq*i + 0*pi/3) * 127 + 128;
 		green = sin(freq*i + 2*pi/3) * 127 + 128;
 		blue = sin(freq*i + 4*pi/3) * 127 + 128;
 
@@ -27,10 +27,12 @@ void rainbow(double freq, char i) {
 }
 
 int main(void) {
-	int cols = 0, bytes = 0;
+	int cols = 0;
 	int line_width = 16;
-	double freq = 0.2;
-	char c, line[line_width];
+	double freq = 0.018;
+	char line[line_width];
+	unsigned char c;
+	unsigned int bytes = 0;
 
 	memset(&line, 0, line_width);