add rylander dithering, `define` macro, begin work on guides.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/guide.rs b/src/guide.rs
new file mode 100644
index 0000000..006566e
--- /dev/null
+++ b/src/guide.rs
@@ -0,0 +1,7 @@
+use crate::bitmap::Axis;
+
+#[derive(Debug)]
+pub struct Guide {
+    axis: Axis,
+    offset: u32,
+}