Introduced ell primitive with example

examples/elip.py

@@ -0,0 +1,31 @@
+import sys
+import sys
+import os
+from math import atan
+from math import degrees
+
+from python_brlcad_tcl.brlcad_tcl import *
+
+class elip_example(BrlCadModel):
+	def __init__(self, brl_db):
+		super(elip_example, self).__init__(brl_db)
+		v = (0, 0, 0)
+		a = (10, 0, 0)
+		b = (0, 10, 0)
+		c = (0, 0, 10)
+		brl_db.Ellipsoid("ellipsoid", v, a, b, c)
+
+def main(argv):
+    #with wdb.WDB(argv[1], "My Database") as brl_db:
+    with brlcad_tcl(argv[1], "My Database") as brl_db:
+        new_ellipsoid = elip_example(brl_db)
+        # All units in the database file are stored in millimeters. This constrains
+        # the arguments to the mk_* routines to also be in millimeters.
+    # process the tcl script into a g database by calling mged
+    brl_db.save_g()
+    # process the g database into an STL file with a list of regions
+    #brl_db.save_stl(['room', 'mainroof', 'roof_window1', 'roof_window2'])  
+    brl_db.save_stl(['elip_example'])
+
+if __name__ == "__main__":
+    main(sys.argv)

python_brlcad_tcl/brlcad_tcl.py

@@ -871,8 +871,22 @@ def Cylinder_hyperbolic(self, name, rhc,vertex, height_vector, bvector, half_wid
     def Cylinder_parabolic(self, name, rpc, vertex, height_vector, bvector, half_width):
         is_string(name)
 
-    def Ellipsoid(self, name, ell, vertex, avector, bvector, cvector):
+    def Ellipsoid(self, name, vertex, avector, bvector, cvector):
         is_string(name)
+        is_truple(vertex)
+        is_truple(avector)
+        is_truple(bvector)
+        is_truple(cvector)
+        v1, v2, v3 = vertex
+        a1, a2, a3 = avector
+        b1, b2, b3 = bvector
+        c1, c2, c3 = cvector
+        self.script_string_list.append('in {} ell {} {} {} {} {} {} {} {} {} {} {} {}\n'.format(name,
+                                                                     v1, v2, v3,
+                                                                     a1, a2, a3,
+                                                                     b1, b2, b3,
+                                                                     c1, c2, c3))
+        return name
 
     def Hyperboloid_elliptical(self, name, ehy, vertex, height_vector, avector, bscalar, apex_to_asymptote):
         is_string(name)