1 files changed, 122 insertions, 0 deletions
diff --git a/examples/animation.rs b/examples/animation.rs
new file mode 100644
index 0000000..f6aca39
--- /dev/null
+++ b/examples/animation.rs
@@ -0,0 +1,122 @@
+use cairo::{Context, SvgSurface};
+use dcel::Dcel;
+use enumset::EnumSet;
+use std::borrow::Cow;
+
+fn main() {
+    let show = |name, dcel: &Dcel<(&'static str, [i64; 2])>| {
+        let width = 300.0;
+        let height = width;
+
+        let surf =
+			//cairo::ImageSurface::create(cairo::Format::ARgb32, width as _, height as _).unwrap();
+			SvgSurface::new(width, height, Some(name)).unwrap();
+        let ctx = Context::new(surf).unwrap();
+        ctx.set_line_width(1.0);
+
+        dcel::write_img(
+            &dcel,
+            &ctx,
+            EnumSet::all(),
+            |v| {
+                [
+                    v.1[0] as f64 * width / 3.0 + width / 2.0,
+                    v.1[1] as f64 * height / 3.0 + height / 2.0,
+                ]
+            },
+            |v| Cow::Borrowed(v.0),
+            12.0,
+        )
+        .unwrap();
+
+        /*ctx.target()
+            .write_to_png(&mut std::fs::File::create(name).unwrap())
+            .unwrap();
+        */
+        /*write!(
+            &mut std::fs::File::create(name).unwrap(),
+            "{}",
+            DisplayFn(|f: &mut fmt::Formatter<'_>| dcel_write_dot(
+                dcel,
+                |v| v.1.map(|x| x as _),
+                |v, f| write!(f, "{}", v.0),
+                f,
+                DcelDotOptions {
+                    prev: false,
+                    next: true,
+                    twin: true,
+                }
+            ))
+        )
+        .unwrap();*/
+    };
+
+    Dcel::new(|mut dcel| {
+        let body = dcel.new_body();
+        // Mevvlfs(a, [w, n], l, f, s)
+
+        //let op = dcel.mevvlfs(*body, [("W", [-4, 0]), ("N", [0, 4])]);
+        let op = dcel
+            .mevvlfs(*body, [("W", [-1, 0]), ("N", [0, 1])])
+            .unwrap();
+        let op2 = dcel.mev(*op.loop_, *op.vertices[1], ("E", [1, 0])).unwrap();
+        let op3 = dcel.mev(*op.loop_, *op2.vertex, ("S", [0, -1])).unwrap();
+
+        dcel.melf([*op3.vertex, *op.vertices[0]], *op.loop_)
+            .unwrap();
+        dcel.melf([*op.vertices[0], *op2.vertex], *op.loop_)
+            .unwrap();
+
+        show("cairo.svg", &dcel);
+    });
+
+    /*
+    dbg!(ctx.clip_extents().unwrap());
+
+    let text = "meow meow meow mew mew mrrrp";
+    let x = 250.0;
+    let y = 250.0;
+
+    let ext = ctx.text_extents(text).unwrap();
+
+    ctx.move_to(
+        x - ext.width() / 2.0,
+        y - ext.y_bearing() - ext.height() / 2.0,
+    );
+    ctx.show_text(text).unwrap();
+
+    ctx.set_line_width(1.0);
+    {
+        let mat = ctx.matrix();
+
+        ctx.translate(x, y);
+        ctx.scale(
+            (ext.width() + ctx.line_width()) / 2.0f64.sqrt(),
+            (ext.height() + ctx.line_width()) / 2.0f64.sqrt(),
+        );
+        ctx.translate(-x, -y);
+        ctx.new_path();
+        ctx.arc(x, y, 1.0, 0.0, 2.0 * std::f64::consts::PI);
+        ctx.set_matrix(mat);
+    }
+
+    ctx.stroke().unwrap();*/
+
+    /*ctx.rectangle(
+        x - (ext.width() + ctx.line_width()) / 2.0,
+        y - (ext.height() + ctx.line_width()) / 2.0,
+        ext.width() + ctx.line_width(),
+        ext.height() + ctx.line_width(),
+    );
+    ctx.stroke().unwrap();*/
+
+    /*ctx.rectangle(
+        x - ext.width() / 2.0,
+        y - ext.height() / 2.0,
+        ext.width(),
+        ext.height(),
+    );*/
+
+    //cairo_move_to (cr, i + 0.5 - te.x_bearing - te.width / 2,
+    //            0.5 - te.y_bearing - te.height / 2);
+}