From 2c70a22c681335dcef4fd6aa84884422f2f2013b Mon Sep 17 00:00:00 2001
From: balr0g <balrog032@gmail.com>
Date: Fri, 26 Jun 2015 00:09:39 -0400
Subject: [PATCH] Fix Windows build

---
 README                  | 8 ++++++++
 poly2tri/sweep/sweep.cc | 4 ++++
 2 files changed, 12 insertions(+)

diff --git a/README b/README
index cb24fd1..01b1d11 100644
--- a/README
+++ b/README
@@ -23,6 +23,14 @@ Dependencies
 Building the library
 ----------------------------------------------
 
+On Windows, follow the instructions here to set up your environment:
+http://rexdouglass.com/python-64-bit-on-windows-part-2-building-packages/
+
+Then to create a wheel package, run the following command:
+python setup.py bdist_wheel
+This will create a .whl package in dist/ directory which can then be redistributed.
+
+On Linux, you can do:
 python setup.py build_ext -i
 
 ----------------------------------------------
diff --git a/poly2tri/sweep/sweep.cc b/poly2tri/sweep/sweep.cc
index bb4d828..c0b72d2 100644
--- a/poly2tri/sweep/sweep.cc
+++ b/poly2tri/sweep/sweep.cc
@@ -28,11 +28,15 @@
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
+
+#define _USE_MATH_DEFINES
+
 #include "sweep.h"
 #include "sweep_context.h"
 #include "advancing_front.h"
 #include "../common/utils.h"
 #include <cstdio>
+#include <cmath>
 #include <exception>