WIP

Author: richard-uk1

Cargo.toml

@@ -48,6 +48,10 @@ features = ["derive"]
 # This is used for research but not really needed; maybe refactor.
 [dev-dependencies]
 rand = "0.8.0"
+snog = { git = "https://github.com/derekdreery/snog" }
 
 [target.'cfg(target_arch="wasm32")'.dev-dependencies]
 getrandom = { version = "0.2.0", features = ["js"] }
+
+[patch.crates-io]
+kurbo = { path = "." }

examples/svg_path.rs

@@ -0,0 +1,69 @@
+use kurbo::{
+    paths::svg::{self, OneVec},
+    Affine, Line, Point, Size,
+};
+use snog::{
+    peniko::{Color, Stroke},
+    App, RenderCtx,
+};
+
+fn main() {
+    let data = Data::new();
+    App::new_with_data(data).with_render(render).run()
+}
+
+// TODO both the lifetime of the RenderCtx and the ref to user data could be the same - nothing is
+// gained by having one longer than the other.
+fn render(data: &mut Data, mut ctx: RenderCtx<'_>) {
+    let Size { width, height } = ctx.screen().size();
+
+    let stroke = Stroke::new(0.005);
+    let scale = Affine::scale_non_uniform(width, height);
+    let brush = Color::WHITE;
+    ctx.stroke(&stroke, scale, &brush, None, &data.path);
+}
+
+struct Data {
+    path: svg::Path,
+}
+
+impl Data {
+    fn new() -> Self {
+        let path = svg::Path::try_from(vec![
+            svg::PathEl::MoveTo(OneVec::single(Point::new(0.1, 0.1))),
+            svg::PathEl::Bearing(std::f64::consts::FRAC_PI_2),
+            svg::PathEl::LineToRel(
+                OneVec::try_from(vec![Point::new(0.2, 0.0), Point::new(-0.1, -0.2)]).unwrap(),
+            ),
+            svg::PathEl::VertRel(OneVec::single(-0.2)),
+            svg::PathEl::CubicToRel(OneVec::single(svg::CubicTo {
+                to: Point::new(0.2, 0.0),
+                ctrl1: Point::new(0.1, 0.1),
+                ctrl2: Point::new(0.1, -0.1),
+            })),
+            svg::PathEl::SmoothCubicToRel(
+                OneVec::try_from(vec![
+                    svg::SmoothCubicTo {
+                        to: Point::new(0.2, 0.0),
+                        ctrl2: Point::new(0.1, -0.1),
+                    },
+                    svg::SmoothCubicTo {
+                        to: Point::new(0.2, 0.0),
+                        ctrl2: Point::new(0.1, -0.1),
+                    },
+                ])
+                .unwrap(),
+            ),
+            svg::PathEl::QuadToRel(OneVec::single(svg::QuadTo {
+                to: Point::new(0.0, 0.1),
+                ctrl: Point::new(0.1, 0.1),
+            })),
+            svg::PathEl::SmoothQuadToRel(
+                OneVec::try_from(vec![Point::new(0.0, 0.1), Point::new(0.0, 0.1)]).unwrap(),
+            ),
+        ])
+        .unwrap();
+
+        Data { path }
+    }
+}

src/lib.rs

@@ -108,8 +108,8 @@ mod rounded_rect_radii;
 mod shape;
 pub mod simplify;
 mod size;
-#[cfg(feature = "std")]
-mod svg;
+//#[cfg(feature = "std")]
+//mod svg;
 mod translate_scale;
 mod vec2;
 
@@ -131,7 +131,7 @@ pub use crate::rounded_rect::*;
 pub use crate::rounded_rect_radii::*;
 pub use crate::shape::*;
 pub use crate::size::*;
-#[cfg(feature = "std")]
-pub use crate::svg::*;
+//#[cfg(feature = "std")]
+//pub use crate::svg::*;
 pub use crate::translate_scale::*;
 pub use crate::vec2::*;