import json
import os
import unittest

from surf.geometry import PolygonMesh
from surf.subd import cc


class TestCC(unittest.TestCase):

    def setUp(self):
        path, file_name = os.path.split(__file__)
        self.samples_dir = os.path.join(path, os.pardir, os.pardir, os.pardir,
                'blender', 'samples')
        self.cube_file_name = os.path.join(self.samples_dir, 'cube.json')
        self.cube = json.load(open(self.cube_file_name, 'r'))
        self.cube_file_name = os.path.join(self.samples_dir,
                'cube-blender-cc-1.json')
        self.cube1 = json.load(open(self.cube_file_name, 'r'))

    def test_refined_vertex_location(self):
        p = PolygonMesh(**self.cube)
        p2 = cc.refine(p)
        v2 = [list(i) for i in p2.vertices]
        for a, b in zip(sorted(self.cube1['vertices']), sorted(v2)):
            for i in xrange(len(a)):
                self.assertAlmostEqual(a[i], b[i])

    def test_vert_count(self):
        p = PolygonMesh(**self.cube)
        p2 = cc.refine(p)
        self.assertEqual(len(p2.vertices), 26)

    def test_edge_count(self):
        p = PolygonMesh(**self.cube)
        p2 = cc.refine(p)
        self.assertEqual(len(p2.edges), 48)

    def test_face_count(self):
        p = PolygonMesh(**self.cube)
        p2 = cc.refine(p)
        self.assertEqual(len(p2.faces), 24)

if __name__ == '__main__':
    unittest.main(verbosity=3)