Add tests and documentation

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 3 insertions, 0 deletions

diff --git a/common.h b/common.h
index 2436a6a..67a1c62 100644
--- a/common.h
+++ b/common.h
@@ -29,6 +29,8 @@
 
 #define SIGNUM(X) (((X) > 0) - ((X) < 0))
 
+#define DEFAULT_DRAFTNESS 0.5
+
 #define draw_vertical_line_opposite_only(...)
 
 
@@ -66,6 +68,7 @@ typedef struct rtgrpblib_cell {
 typedef struct rtgrpblib_raster {
 	size_t height;
 	size_t width;
+	size_t size;
 	double draftness; /* TODO support 0 */
 	CELL cells[];
 } RASTER;