From 3672c8cacf689199b14ab47b63123ab037a12b51 Mon Sep 17 00:00:00 2001
From: Nathan Wagner <nw@hydaspes.if.org>
Date: Sun, 17 Jun 2018 18:03:14 +0000
Subject: [PATCH] add hexagon cli source file

---
 cli/hexagon.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 cli/hexagon.c

diff --git a/cli/hexagon.c b/cli/hexagon.c
new file mode 100644
index 0000000..6417718
--- /dev/null
+++ b/cli/hexagon.c
@@ -0,0 +1,87 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "hexagon.h"
+
+/*
+ * -s scale by n
+ * -h horizontal layout
+ * -r rotate grid n degrees counter clockwise
+ * -n append a newline
+ */
+int main(int ac, char *av[]) {
+	double scale = 1.0;
+#if 0
+	double rotate = 0.0;
+	double tx = 0.0, ty = 0.0; /* translation */
+	int horizontal = 0;
+	int newline = 0;
+#endif
+	int x, y;
+	char *format = NULL;
+
+	if (ac < 2) {
+		fprintf(stderr, "must give a command\n");
+		exit(EXIT_FAILURE);
+	}
+
+	if (!strcmp(av[1], "center")) {
+		struct HL_hex hex;
+		struct HL_point center;
+
+		x = strtol(av[2], NULL, 10);
+		y = strtol(av[3], NULL, 10);
+		hex = HL_hex_xy(x, y);
+		center = HL_hexcenter(hex);
+		printf(format ? format : "%f %f\n", center.x, center.y);
+	}
+       	else if (!strcmp(av[1], "polar")) {
+		/* angle, radius */
+		struct HL_point pt;
+		double angle, dist;
+
+		angle = strtod(av[2], NULL);
+		dist = strtod(av[3], NULL);
+		
+		pt = HL_polar(angle, dist, NULL);
+		printf(format ? format : "%f %f\n", pt.x, pt.y);
+	}
+       	else if (!strcmp(av[1], "bin")) {
+		struct HL_hex hex;
+		/* angle, radius */
+		double px, py;
+		px = strtod(av[2], NULL);
+		py = strtod(av[3], NULL);
+		
+		hex = HL_hexbin(scale, px, py);
+		printf(format ? format : "%d %d\n", hex.x, hex.y);
+	}
+       	else if (!strcmp(av[1], "distance")) {
+		struct HL_hex from, to;
+		int x, y, n;
+
+		n = sscanf(av[2], "%d:%d", &x, &y);
+		if (n != 2) {
+			n = atoi(av[2]);
+			x = n % 100;
+			y = n / 100;
+		}
+		from.x = x;
+		from.y = y;
+
+		n = sscanf(av[3], "%d:%d", &x, &y);
+		if (n != 2) {
+			n = atoi(av[3]);
+			x = n % 100;
+			y = n / 100;
+		}
+		to.x = x;
+		to.y = y;
+		
+		n = HL_distance(from, to);
+		printf(format ? format : "%d\n", n);
+	}
+
+	return 0;
+}
-- 
2.40.0