1 files changed, 97 insertions, 0 deletions
diff --git a/third_party/rust/aa-stroke/examples/simple.rs b/third_party/rust/aa-stroke/examples/simple.rs
new file mode 100644
index 0000000000..84cade4a16
--- /dev/null
+++ b/third_party/rust/aa-stroke/examples/simple.rs
@@ -0,0 +1,97 @@
+use aa_stroke::{StrokeStyle, LineCap, LineJoin, Point, Stroker, tri_rasterize::rasterize_to_mask};
+
+
+
+fn write_image(data: &[u8], path: &str, width: u32, height: u32) {
+    use std::path::Path;
+    use std::fs::File;
+    use std::io::BufWriter;
+
+    /*let mut png_data: Vec<u8> = vec![0; (width * height * 3) as usize];
+    let mut i = 0;
+    for pixel in data {
+        png_data[i] = ((pixel >> 16) & 0xff) as u8;
+        png_data[i + 1] = ((pixel >> 8) & 0xff) as u8;
+        png_data[i + 2] = ((pixel >> 0) & 0xff) as u8;
+        i += 3;
+    }*/
+
+
+    let path = Path::new(path);
+    let file = File::create(path).unwrap();
+    let w = &mut BufWriter::new(file);
+
+    let mut encoder = png::Encoder::new(w, width, height); // Width is 2 pixels and height is 1.
+    encoder.set_color(png::ColorType::Grayscale);
+    encoder.set_depth(png::BitDepth::Eight);
+    let mut writer = encoder.write_header().unwrap();
+
+    writer.write_image_data(&data).unwrap(); // Save
+}
+
+
+// WpfGfx uses CShapeBase which has a set of Figures
+// Figures have FigureFlags which include FigureFlagClosed
+// so that we can know ahead of time whether the figure/subpath
+// is closed
+
+// How do we handle transformed paths? D2D seems to only support transforms that
+// can be applied before stroking. (one's with uniform scale?)
+fn main() {
+    let mut stroker = Stroker::new(&StrokeStyle{
+        cap: LineCap::Round, 
+        join: LineJoin::Bevel, 
+        width: 20.,
+         ..Default::default()});
+    stroker.move_to(Point::new(20., 20.), false);
+    stroker.line_to(Point::new(100., 100.));
+    stroker.line_to_capped(Point::new(110., 20.));
+ 
+    
+    stroker.move_to(Point::new(120., 20.), true);
+    stroker.line_to(Point::new(120., 50.));
+    stroker.line_to(Point::new(140., 50.));
+    stroker.close();
+
+    stroker.move_to(Point::new(20., 160.), true);
+    stroker.curve_to(Point::new(100., 160.), Point::new(100., 180.), Point::new(20., 180.));
+    stroker.close();
+
+    let stroked = stroker.finish();
+    dbg!(&stroked);
+
+    let mask = rasterize_to_mask(&stroked, 200, 200);
+    write_image(&mask,"out.png", 200, 200);
+/* 
+    struct Target;
+    impl CFlatteningSink for Target {
+        fn AcceptPointAndTangent(&mut self,
+        pt: &GpPointR,
+            // The point
+        vec: &GpPointR,
+            // The tangent there
+        fLast: bool
+            // Is this the last point on the curve?
+        ) -> HRESULT {
+        todo!()
+    }
+
+        fn AcceptPoint(&mut self,
+            pt: &GpPointR,
+                // The point
+            t: f64,
+                // Parameter we're at
+            fAborted: &mut bool) -> HRESULT {
+        println!("{} {}", pt.x, pt.y);
+        return S_OK;
+    }
+    }
+    let bezier = CBezier::new([GpPointR { x: 0., y: 0. },
+        GpPointR { x: 0., y: 0. },
+        GpPointR { x: 0., y: 0. },
+        GpPointR { x: 100., y: 100. }]);
+        let mut t = Target{};
+    let mut f = CBezierFlattener::new(&bezier, &mut t, 0.1);
+    f.Flatten(false);*/
+
+}
+\ No newline at end of file