Multi-thread plotting

tests/worker_stack/test_workerStack.py

@@ -0,0 +1,54 @@
+from unittest import TestCase
+from FlatCAMWorkerStack import WorkerStack
+from PyQt4 import QtCore, QtGui
+import random
+from multiprocessing import Process, Queue
+from shapely.geometry import LineString
+import time
+
+
+def calc(line, q):
+    res = q.get()
+    res += list(line.coords)
+
+    res = [res for _ in range(3)]
+
+    q.put(res)
+    # a = [x ** x for x in range(0, random.randint(5000, 10000))]
+    print "process ended"
+    return
+
+
+class TestWorkerStack(TestCase):
+
+    def test_create(self):
+        a = QtGui.QApplication([])
+
+        s = WorkerStack()
+        time.sleep(1)
+
+        for i in range(0, 4):
+            s.add_task({'fcn': self.task, 'params': [i]})
+
+        # self.sleep(1000)
+        #
+        # for i in range(0, 8):
+        #     s.add_task({'fcn': self.task, 'params': [i + 8]})
+
+        time.sleep(2)
+
+    def task(self, id):
+        print "Task", id, "started"
+
+        line = LineString([(0, 0), (1, 1), (1, 0), (0, 0)])
+        out = [(9, 9)]
+
+        q = Queue()
+        q.put(out)
+
+        p = Process(target=calc, args=(line, q))
+        p.start()
+        p.join()
+
+        out = q.get()
+        print "Task", id, "ended", out