def spline_insert_knot():
dwg = ezdxf.new('R2000', setup=True)
msp = dwg.modelspace()
def add_spline(control_points, color=3, knots=None):
msp.add_polyline2d(control_points,
dxfattribs={
'color': color,
'linetype': 'DASHED'
})
msp.add_open_spline(control_points,
degree=3,
knots=knots,
dxfattribs={'color': color})
control_points = Vector.list([(0, 0), (10, 20), (30, 10), (40, 10),
(50, 0), (60, 20), (70, 50), (80, 70)])
add_spline(control_points, color=3, knots=None)
bspline = BSpline(control_points, order=4)
bspline.insert_knot(bspline.max_t / 2)
add_spline(bspline.control_points, color=4, knots=bspline.knot_values())
if dwg.validate():
dwg.saveas("Spline_R2000_spline_insert_knot.dxf")
def test_bspline_insert_knot():
bspline = BSpline([(0, 0), (10, 20), (30, 10), (40, 10), (50, 0), (60, 20),
(70, 50), (80, 70)])
t = bspline.max_t / 2
assert len(bspline.control_points) == 8
bspline.insert_knot(t)
assert len(bspline.control_points) == 9
def spline_insert_knot():
doc = ezdxf.new("R2000", setup=True)
msp = doc.modelspace()
def add_spline(control_points, color=3, knots=None):
msp.add_polyline2d(control_points,
dxfattribs={
"color": color,
"linetype": "DASHED"
})
msp.add_open_spline(control_points,
degree=3,
knots=knots,
dxfattribs={"color": color})
control_points = Vec3.list([
(0, 0),
(10, 20),
(30, 10),
(40, 10),
(50, 0),
(60, 20),
(70, 50),
(80, 70),
])
add_spline(control_points, color=3, knots=None)
bspline = BSpline(control_points, order=4)
bspline.insert_knot(bspline.max_t / 2)
add_spline(bspline.control_points, color=4, knots=bspline.knots())
doc.saveas("Spline_R2000_spline_insert_knot.dxf")