From fd070d7a24aa5f85f1ec768cd1e6c770759fd852 Mon Sep 17 00:00:00 2001
From: Patrick Walton <pcwalton@mimiga.net>
Date: Wed, 19 Feb 2020 10:58:53 -0800
Subject: [PATCH] Start an `angle` module in `pathfinder_geometry`

---
 geometry/src/angle.rs | 19 +++++++++++++++++++
 geometry/src/lib.rs   |  1 +
 2 files changed, 20 insertions(+)
 create mode 100644 geometry/src/angle.rs

diff --git a/geometry/src/angle.rs b/geometry/src/angle.rs
new file mode 100644
index 00000000..1fa9e09e
--- /dev/null
+++ b/geometry/src/angle.rs
@@ -0,0 +1,19 @@
+// pathfinder/geometry/src/angle.rs
+//
+// Copyright © 2020 The Pathfinder Project Developers.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Angle utilities.
+
+use std::f32::consts::PI;
+
+#[inline]
+pub fn angle_from_degrees(degrees: f32) -> f32 {
+    const SCALE: f32 = 2.0 * PI / 360.0;
+    degrees * SCALE
+}
diff --git a/geometry/src/lib.rs b/geometry/src/lib.rs
index 3ff52601..59d04061 100644
--- a/geometry/src/lib.rs
+++ b/geometry/src/lib.rs
@@ -10,6 +10,7 @@
 
 //! Basic geometry and linear algebra primitives, optimized with SIMD.
 
+pub mod angle;
 pub mod line_segment;
 pub mod rect;
 pub mod transform2d;