From a3c4dbca95fedd0106c272847037c6923f6770df Mon Sep 17 00:00:00 2001
From: Simon Heath <icefoxen@gmail.com>
Date: Fri, 8 Jun 2018 12:43:39 -0400
Subject: [PATCH] Adds conversions to and from mint Point types.

---
 src/geometry/point_conversion.rs | 66 ++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)

diff --git a/src/geometry/point_conversion.rs b/src/geometry/point_conversion.rs
index 582f5caf..a26cf35e 100644
--- a/src/geometry/point_conversion.rs
+++ b/src/geometry/point_conversion.rs
@@ -6,6 +6,16 @@ use base::dimension::{DimName, DimNameAdd, DimNameSum, U1};
 use base::allocator::Allocator;
 
 use geometry::Point;
+#[cfg(feature = "mint")]
+use mint;
+#[cfg(feature = "mint")]
+use base::dimension::{U2, U3};
+#[cfg(feature = "mint")]
+use std::convert::{AsMut, AsRef, From, Into};
+#[cfg(feature = "mint")]
+use base::storage::{Storage, StorageMut};
+#[cfg(feature = "mint")]
+use std::mem;
 
 /*
  * This file provides the following conversions:
@@ -13,6 +23,8 @@ use geometry::Point;
  *
  * Point -> Point
  * Point -> Vector (homogeneous)
+ * 
+ * mint::Point <-> Point
  */
 
 impl<N1, N2, D> SubsetOf<Point<N2, D>> for Point<N1, D>
@@ -67,3 +79,57 @@ where
         Self::from_coordinates(::convert_unchecked(coords))
     }
 }
+
+
+
+#[cfg(feature = "mint")]
+macro_rules! impl_from_into_mint_1D(
+    ($($NRows: ident => $PT:ident, $VT:ident [$SZ: expr]);* $(;)*) => {$(
+        impl<N> From<mint::$PT<N>> for Point<N, $NRows>
+        where N: Scalar,
+              DefaultAllocator: Allocator<N, $NRows> {
+            #[inline]
+            fn from(p: mint::$PT<N>) -> Self {
+                Self {
+                    coords: VectorN::from(mint::$VT::from(p)),
+                }
+            }
+        }
+
+        impl<N> Into<mint::$PT<N>> for Point<N, $NRows>
+        where N: Scalar {
+            #[inline]
+            fn into(self) -> mint::$PT<N> {
+                let mint_vec: mint::$VT<N> = self.coords.into();
+                mint::$PT::from(mint_vec)
+            }
+        }
+
+        impl<N> AsRef<mint::$PT<N>> for Point<N, $NRows>
+        where N: Scalar {
+            #[inline]
+            fn as_ref(&self) -> &mint::$PT<N> {
+                unsafe {
+                    mem::transmute(self.coords.data.ptr())
+                }
+            }
+        }
+
+        impl<N> AsMut<mint::$PT<N>> for Point<N, $NRows>
+        where N: Scalar {
+            #[inline]
+            fn as_mut(&mut self) -> &mut mint::$PT<N> {
+                unsafe {
+                    mem::transmute(self.coords.data.ptr_mut())
+                }
+            }
+        }
+    )*}
+);
+
+// Implement for points of dimension 2, 3.
+#[cfg(feature = "mint")]
+impl_from_into_mint_1D!(
+    U2 => Point2, Vector2[2];
+    U3 => Point3, Vector3[3];
+);