1 files changed, 33 insertions, 0 deletions
diff --git a/examples/sierpinski.rs b/examples/sierpinski.rs
new file mode 100644
index 0000000..9e68589
--- /dev/null
+++ b/examples/sierpinski.rs
@@ -0,0 +1,33 @@
+use plotters::coord::Shift;
+use plotters::prelude::*;
+
+pub fn sierpinski_carpet(
+    depth: u32,
+    drawing_area: &DrawingArea<BitMapBackend, Shift>,
+) -> Result<(), Box<dyn std::error::Error>> {
+    if depth > 0 {
+        let sub_areas = drawing_area.split_evenly((3, 3));
+        for (idx, sub_area) in (0..).zip(sub_areas.iter()) {
+            if idx != 4 {
+                sub_area.fill(&BLUE)?;
+                sierpinski_carpet(depth - 1, sub_area)?;
+            } else {
+                sub_area.fill(&WHITE)?;
+            }
+        }
+    }
+    Ok(())
+}
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let root =
+        BitMapBackend::new("plotters-doc-data/sierpinski.png", (1024, 768)).into_drawing_area();
+
+    root.fill(&WHITE)?;
+
+    let root = root
+        .titled("Sierpinski Carpet Demo", ("sans-serif", 60))?
+        .shrink(((1024 - 700) / 2, 0), (700, 700));
+
+    sierpinski_carpet(5, &root)
+}