1 files changed, 32 insertions, 0 deletions
diff --git a/tui/geometry.go b/tui/geometry.go
new file mode 100644
index 0000000..b20960b
--- /dev/null
+++ b/tui/geometry.go
@@ -0,0 +1,32 @@
+package tui
+
+type Direction int
+const (
+	Down = iota
+	Up
+	Right
+	Left
+)
+
+func (d Direction) axis() int {
+	switch d {
+	case Down, Up:
+		return 1
+	default:
+		return 0
+	}
+}
+
+func (d Direction) reverse() bool {
+	switch d {
+	case Down, Right:
+		return false
+	default:
+		return true
+	}
+}
+
+type rect struct {
+	min [2]int
+	max [2]int
+}
+\ No newline at end of file