added c extension to setup.py

Author: Tristan

.gitignore

@@ -1,4 +1,5 @@
 *.DS_store
+*.so
 *.egg
 *.pyc
 *.x3g

setup.py

@@ -1,4 +1,14 @@
-from setuptools import setup, find_packages
+from setuptools import setup, Extension
+import numpy as np
+
+SRC_DIR = "stl_tools"
+PACKAGES = [SRC_DIR]
+
+ext_1 = Extension(SRC_DIR + ".cwrapped",
+                  [SRC_DIR + "/cwrapped.c"],
+                  libraries=[],
+                  include_dirs=[np.get_include()])
+EXTENSIONS = [ext_1]
 
 setup(name='stl_tools',
       version='0.2.2',
@@ -9,6 +19,7 @@
       url='https://github.com/thearn/stl_tools',
       license='Apache 2.0',
       packages=['stl_tools'],
+      ext_modules=EXTENSIONS,
       entry_points={
           'console_scripts':
           ['image2stl=stl_tools.image2stl:image2stl']

stl_tools/__init__.py

@@ -1,3 +1,2 @@
 from .numpy2stl import numpy2stl
 from .text2png import text2png, text2array
-from .cwrapped import tessellate