def test_GIVEN_a_single_triangle_face_WHEN_creating_vertex_buffer_THEN_output_is_correct(
):
vertices = [QVector3D(0, 0, 0), QVector3D(0, 1, 0), QVector3D(1, 1, 0)]
faces = [[0, 1, 2]]
vertex_buffer = create_vertex_buffer(vertices, faces)
expected_output = itertools.chain.from_iterable(
[v.toTuple() for v in vertices])
assert list(vertex_buffer) == list(expected_output)
def test_GIVEN_a_square_WHEN_creating_vertex_buffer_THEN_length_is_correct():
vertices = [
QVector3D(0, 0, 0),
QVector3D(1, 0, 0),
QVector3D(0, 1, 0),
QVector3D(1, 1, 0),
]
faces = [[0, 1, 2, 3]]
vertex_buffer = create_vertex_buffer(vertices, faces)
assert (len(list(vertex_buffer)) == TRIANGLES_IN_SQUARE *
VERTICES_IN_TRIANGLE * POINTS_IN_VERTEX)
def test_GIVEN_a_set_of_triangle_faces_WHEN_creating_vertex_buffer_THEN_length_is_total_points_in_all_faces(
):
vertices = [
QVector3D(0, 0, 0),
QVector3D(0, 1, 0),
QVector3D(1, 1, 0),
QVector3D(1, 0, 1),
]
faces = [[0, 1, 2], [3, 2, 0], [2, 3, 1]]
vertex_buffer = create_vertex_buffer(vertices, faces)
NUM_OF_TRIANGLES = len(faces)
assert (len(list(vertex_buffer)) == NUM_OF_TRIANGLES *
VERTICES_IN_TRIANGLE * POINTS_IN_VERTEX)