diff -r 859a41b137d4 -r abb42ba345b6 rust/landgen/src/outline_template.rs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rust/landgen/src/outline_template.rs	Fri Nov 02 09:45:54 2018 +0100
@@ -0,0 +1,75 @@
+use integral_geometry::{Point, Rect, Size};
+
+
+pub struct OutlineTemplate {
+    pub islands: Vec<Vec<Rect>>,
+    pub fill_points: Vec<Point>,
+    pub size: Size,
+    pub can_flip: bool,
+    pub can_invert: bool,
+    pub can_mirror: bool,
+    pub is_negative: bool,
+}
+
+impl OutlineTemplate {
+    pub fn new(size: Size) -> Self {
+        OutlineTemplate {
+            size,
+            islands: Vec::new(),
+            fill_points: Vec::new(),
+            can_flip: false,
+            can_invert: false,
+            can_mirror: false,
+            is_negative: false,
+        }
+    }
+
+    pub fn flippable(self) -> Self {
+        Self {
+            can_flip: true,
+            ..self
+        }
+    }
+
+    pub fn mirrorable(self) -> Self {
+        Self {
+            can_mirror: true,
+            ..self
+        }
+    }
+
+    pub fn invertable(self) -> Self {
+        Self {
+            can_invert: true,
+            ..self
+        }
+    }
+
+    pub fn negative(self) -> Self {
+        Self {
+            is_negative: true,
+            ..self
+        }
+    }
+
+    pub fn with_fill_points(self, fill_points: Vec<Point>) -> Self {
+        Self {
+            fill_points,
+            ..self
+        }
+    }
+
+    pub fn with_islands(self, islands: Vec<Vec<Rect>>) -> Self {
+        Self { islands, ..self }
+    }
+
+    pub fn add_fill_points(mut self, points: &[Point]) -> Self {
+        self.fill_points.extend_from_slice(points);
+        self
+    }
+
+    pub fn add_island(mut self, island: &[Rect]) -> Self {
+        self.islands.push(island.into());
+        self
+    }
+}