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import numpy as np
import pytest
from OCC.Core.Geom import Geom_Line, Geom_Plane
from OCC.Core.Geom2d import Geom2d_Line
from OCC.Core.gp import gp_Dir, gp_Dir2d, gp_Pnt, gp_Pnt2d
from OCC.Core.Poly import Poly_Array1OfTriangle
from OCC.Core.TColgp import (
TColgp_Array1OfDir,
TColgp_Array1OfDir2d,
TColgp_Array1OfPnt,
TColgp_Array1OfPnt2d,
TColgp_Array1OfVec,
TColgp_Array1OfVec2d,
TColgp_Array1OfXY,
TColgp_Array1OfXYZ,
TColgp_Array2OfDir,
TColgp_Array2OfDir2d,
TColgp_Array2OfPnt,
TColgp_Array2OfPnt2d,
TColgp_Array2OfVec,
TColgp_Array2OfVec2d,
TColgp_Array2OfXY,
TColgp_Array2OfXYZ,
)
from OCC.Core.TColStd import (
TColStd_Array1OfInteger,
TColStd_Array1OfReal,
TColStd_Array2OfInteger,
TColStd_Array2OfReal,
)
from OCC.Core.TShort import TShort_Array1OfShortReal, TShort_Array2OfShortReal
@pytest.fixture
def array_types_2d():
return {
TColgp_Array1OfPnt2d,
TColgp_Array1OfVec2d,
TColgp_Array1OfDir2d,
TColgp_Array1OfXY,
TColgp_Array2OfPnt2d,
TColgp_Array2OfVec2d,
TColgp_Array2OfDir2d,
TColgp_Array2OfXY,
}
@pytest.fixture
def normalizing_array_types():
return {
TColgp_Array1OfDir,
TColgp_Array1OfDir2d,
TColgp_Array2OfDir,
TColgp_Array2OfDir2d,
}
@pytest.mark.parametrize(
"type_,arr",
[
(TShort_Array1OfShortReal, np.random.rand(500).astype(np.float32)),
(TColStd_Array1OfInteger, np.arange(500).astype(int)),
(TColStd_Array1OfReal, np.random.rand(500)),
(TShort_Array2OfShortReal, np.random.rand(101, 201).astype(np.float32)),
(TColStd_Array2OfInteger, np.arange(101 * 201).reshape(101, 201).astype(int)),
(TColStd_Array2OfReal, np.random.rand(101, 201)),
(Poly_Array1OfTriangle, np.arange(303).reshape(-1, 3).astype(int)),
],
)
def test_standard_array(type_, arr):
arr_occ = type_.from_numpy_array(arr)
arr_out = arr_occ.to_numpy_array()
assert np.all(arr_out == arr)
@pytest.mark.parametrize(
"type_",
(
TColgp_Array1OfPnt,
TColgp_Array1OfVec,
TColgp_Array1OfDir,
TColgp_Array1OfXYZ,
TColgp_Array1OfPnt2d,
TColgp_Array1OfVec2d,
TColgp_Array1OfDir2d,
TColgp_Array1OfXY,
),
)
def test_array1_of_gp(type_, array_types_2d, normalizing_array_types):
points = np.random.rand(10001, 3)
p = points[:, :-1] if type_ in array_types_2d else points
gp_arr = type_.from_numpy_array(p)
assert gp_arr.Size() == len(points)
np_arr_out = gp_arr.to_numpy_array()
if type_ in normalizing_array_types:
assert np.all(np_arr_out == p / np.linalg.norm(p, axis=-1, keepdims=True))
else:
assert np.all(np_arr_out == p)
@pytest.mark.parametrize(
"type_",
(
TColgp_Array2OfPnt,
TColgp_Array2OfVec,
TColgp_Array2OfDir,
TColgp_Array2OfXYZ,
TColgp_Array2OfPnt2d,
TColgp_Array2OfVec2d,
TColgp_Array2OfDir2d,
TColgp_Array2OfXY,
),
)
def test_array2_of_gp(type_, array_types_2d, normalizing_array_types):
points = np.random.rand(201, 101, 3)
p = points[..., :-1] if type_ in array_types_2d else points
arr_occ = type_.from_numpy_array(p)
np_arr_out = arr_occ.to_numpy_array()
if type_ in normalizing_array_types:
assert np.all(np_arr_out == p / np.linalg.norm(p, axis=-1, keepdims=True))
else:
assert np.all(np_arr_out == p)
@pytest.mark.parametrize(
"line",
(
Geom2d_Line(gp_Pnt2d(0.0, 0.0), gp_Dir2d(1.0, 0.15)),
Geom_Line(gp_Pnt(0.0, 0.0, 0.0), gp_Dir(1.0, 0.15, 0.0)),
),
)
def test_curve_eval(line):
u = np.arange(5, dtype=float)
points = line.eval_numpy_array(u)
assert np.all(np.linalg.norm(points, axis=1) == u)
def test_surface_eval():
n_vec = np.array([1.0, 0.15, 0.0])
u = np.arange(5, dtype=float)
v = np.arange(6, dtype=float)
plane = Geom_Plane(gp_Pnt(0.0, 0.0, 0.0), gp_Dir(*n_vec))
uv = np.dstack(np.meshgrid(u, v, indexing="ij")).reshape(-1, 2)
arr_out = plane.eval_numpy_array(uv).reshape(len(u), len(v), -1)
v_vec = np.array([0.0, 0.0, 1.0])
u_vec = np.cross(v_vec, n_vec / np.linalg.norm(n_vec))
res = u[:, None, None] * u_vec + v[None, :, None] * v_vec
assert np.all(res == arr_out)
@pytest.mark.parametrize(
"line,ndim",
(
(Geom2d_Line(gp_Pnt2d(0.0, 0.0), gp_Dir2d(1.0, 0.15)), 2),
(Geom_Line(gp_Pnt(0.0, 0.0, 0.0), gp_Dir(1.0, 0.15, 0.0)), 3),
),
)
def test_curve_derivative_eval(line, ndim):
u = np.arange(5, dtype=float)
vectors = line.eval_derivative_numpy_array(u, 1)
gp_line = line.Lin() if isinstance(line, Geom_Line) else line.Lin2d()
direction = np.array([gp_line.Direction().Coord(i + 1) for i in range(ndim)])
assert np.all(vectors == direction)
def test_surface_derivative_eval():
n_vec = np.array([1.0, 0.15, 0.0])
u = np.arange(5, dtype=float)
v = np.arange(6, dtype=float)
plane = Geom_Plane(gp_Pnt(0.0, 0.0, 0.0), gp_Dir(*n_vec))
uv = np.dstack(np.meshgrid(u, v, indexing="ij")).reshape(-1, 2)
arr_out = plane.eval_derivative_numpy_array(uv, 0, 1).reshape(len(u), len(v), -1)
assert np.all(arr_out @ n_vec == 0.0)
arr_out = plane.eval_derivative_numpy_array(uv, 1, 0).reshape(len(u), len(v), -1)
assert np.all(arr_out @ n_vec == 0.0)