1 files changed, 57 insertions, 0 deletions
diff --git a/board.h b/board.h
new file mode 100644
index 0000000..c7fb477
--- /dev/null
+++ b/board.h
@@ -0,0 +1,57 @@
+#ifndef BOARD_H
+#define BOARD_H
+
+#include <stdbool.h>
+
+// board spec from WDF rules
+#define WIRE_WIDTH 1.56
+#define INNER_DIAMETER_BULL 12.7
+#define INNER_DIAMETER_25 31.8
+#define DOUBLE_OUTER_EDGE 170.0
+#define TREBLE_OUTER_EDGE 107.4
+#define DOUBLE_INSIDE_WIDTH 8.0
+#define TREBLE_INSIDE_WIDTH 8.0
+
+#define SEGMENT_MAX_LEN 5
+// distance from centre to apex of outer wire
+// must be ordered outwards from centre
+#define FOREACH_RING(M) \
+	M(BULL, INNER_DIAMETER_BULL/2 + WIRE_WIDTH/2) \
+	M(25, INNER_DIAMETER_25/2 + WIRE_WIDTH/2) \
+	M(SMALL, TREBLE_OUTER_EDGE - WIRE_WIDTH - TREBLE_INSIDE_WIDTH - \
+		WIRE_WIDTH/2) \
+	M(TREBLE, TREBLE_OUTER_EDGE - WIRE_WIDTH/2) \
+	M(BIG, DOUBLE_OUTER_EDGE - WIRE_WIDTH - DOUBLE_INSIDE_WIDTH - \
+		WIRE_WIDTH/2) \
+	M(DOUBLE, DOUBLE_OUTER_EDGE - WIRE_WIDTH/2)
+#define GEN_RING_ENUM(X, D) R_ ## X,
+#define GEN_RING_STRING(X, D) #X,
+#define GEN_RING_OUTER_DIST(X, D) D,
+enum ring {
+	FOREACH_RING(GEN_RING_ENUM)
+	R_OUT
+};
+
+struct segment {
+	enum ring ring;
+	int sector;
+};
+
+void init_board();
+
+struct ccoords {
+	double x, y;
+};
+
+struct pcoords {
+	double a, r;
+};
+
+struct segment get_segment(struct pcoords c);
+char *segment_name(struct segment seg);
+int segment_points(struct segment seg);
+bool segment_is_double(struct segment seg);
+struct pcoords segment_centre(struct segment seg);
+struct segment segment_from_name(char *name);
+
+#endif