from compas.geometry import offset_polyline
from compas.utilities import linspace
from compas_plotters import GeometryPlotter
controlpoints = [
Point(0, 0, 0),
Point(4, 2.5, 0),
Point(6, -2.5, 0),
Point(10, 0, 0)
]
controlpoly = Polyline(controlpoints)
curve = Bezier(controlpoints)
poly = Polyline(curve.locus())
poly1 = Polyline(offset_polyline(poly, +0.15))
poly2 = Polyline(offset_polyline(poly, -0.15))
points = [curve.point(t) for t in linspace(0, 1, 20)]
tangents = [curve.tangent(t) for t in linspace(0, 1, 20)]
normals = [Vector(0, 0, 1).cross(t) for t in tangents]
# ==============================================================================
# Visualization
# ==============================================================================
plotter = GeometryPlotter(figsize=(16, 9))
plotter.add(controlpoly,
linestyle='dotted',
linewidth=1.0,
def test_variable_offset_on_colinear_polyline(polyline, distance, normal, tol, output_polyline):
output_polyline = [v for v in output_polyline]
assert allclose(offset_polyline(polyline, distance, normal, tol), output_polyline)
def test_variable_offset_on_colinear_polyline(polyline, distance, normal, tol,
output_polyline):
output_polyline = [pytest.approx(v) for v in output_polyline]
assert offset_polyline(polyline, distance, normal, tol) == output_polyline
def test_offset_polyline_equals_offset_line(polyline, distance, normal, tol):
output_line = [v for v in offset_line(polyline, distance, normal)]
assert allclose(offset_polyline(polyline, distance, normal, tol), output_line)
def test_offset_polyline_equals_offset_line(polyline, distance, normal, tol):
output_line = [
pytest.approx(v) for v in offset_line(polyline, distance, normal)
]
assert offset_polyline(polyline, distance, normal, tol) == output_line