Move all Cura files into a src/ directory

src/ConvexHullJob.py

@@ -0,0 +1,32 @@
+from UM.Job import Job
+from UM.Application import Application
+from UM.Math.Polygon import Polygon
+
+import numpy
+
+from ConvexHullNode import ConvexHullNode
+
+class ConvexHullJob(Job):
+    def __init__(self, node):
+        super().__init__()
+
+        self._node = node
+
+    def run(self):
+        if not self._node or not self._node.getMeshData():
+            return
+
+        mesh = self._node.getMeshData()
+        vertexData = mesh.getTransformed(self._node.getWorldTransformation()).getVertices()
+
+        hull = Polygon(numpy.rint(vertexData[:, [0, 2]]).astype(int))
+
+        # First, calculate the normal convex hull around the points
+        hull = hull.getConvexHull()
+        # Then, do a Minkowski hull with a simple 1x1 quad to outset and round the normal convex hull.
+        hull = hull.getMinkowskiHull(Polygon(numpy.array([[-1, -1], [-1, 1], [1, 1], [1, -1]], numpy.float32)))
+
+        hull_node = ConvexHullNode(self._node, hull, Application.getInstance().getController().getScene().getRoot())
+
+        self._node._convex_hull = hull
+        delattr(self._node, "_convex_hull_job")