def test_bspline_curve2d_deriv1():
# Create a curve instance
curve = OBJECT_INSTANCE()
# Set curve degree
curve.degree = 3
# Set control points
curve.ctrlpts = CONTROL_POINTS
# Set knot vector
curve.knotvector = [0.0, 0.0, 0.0, 0.0, 0.33, 0.66, 1.0, 1.0, 1.0, 1.0]
# Take the derivative
der1 = curve.derivatives(u=0.35, order=2)
curve.evaluator = evaluators.CurveEvaluator2()
der2 = curve.derivatives(u=0.35, order=2)
assert abs(der1[0][0] - der2[0][0]) < GEOMDL_DELTA
assert abs(der1[0][1] - der2[0][1]) < GEOMDL_DELTA
assert abs(der1[1][0] - der2[1][0]) < GEOMDL_DELTA
assert abs(der1[1][1] - der2[1][1]) < GEOMDL_DELTA
assert abs(der1[2][0] - der2[2][0]) < GEOMDL_DELTA
assert abs(der1[2][1] - der2[2][1]) < GEOMDL_DELTA
def test_bspline_curve3d_deriv2():
# Create a curve instance
curve = OBJECT_INSTANCE()
# Set curve degree
curve.degree = 4
# Set control points
curve.ctrlpts = CONTROL_POINTS
# Set knot vector
curve.knotvector = [
0.0, 0.0, 0.0, 0.0, 0.0, 0.1, 0.3, 0.5, 0.7, 0.9, 1.0, 1.0, 1.0, 1.0,
1.0
]
# Take the derivative
evalpt = curve.curvept(u=0.35)
der1 = curve.derivatives(u=0.35)
curve.evaluator = evaluators.CurveEvaluator2()
der2 = curve.derivatives(u=0.35)
assert abs(der1[0][0] - evalpt[0]) < GEOMDL_DELTA
assert abs(der1[0][1] - evalpt[1]) < GEOMDL_DELTA
assert abs(der1[0][2] - evalpt[2]) < GEOMDL_DELTA
assert abs(der2[0][0] - evalpt[0]) < GEOMDL_DELTA
assert abs(der2[0][1] - evalpt[1]) < GEOMDL_DELTA
assert abs(der2[0][2] - evalpt[2]) < GEOMDL_DELTA
def test_bspline_curve2d_deriv_eval(spline_curve):
evalpt = spline_curve.evaluate_single(0.35)
der1 = spline_curve.derivatives(u=0.35)
spline_curve.evaluator = evaluators.CurveEvaluator2()
der2 = spline_curve.derivatives(u=0.35)
assert abs(der1[0][0] - evalpt[0]) < GEOMDL_DELTA
assert abs(der1[0][1] - evalpt[1]) < GEOMDL_DELTA
assert abs(der2[0][0] - evalpt[0]) < GEOMDL_DELTA
assert abs(der2[0][1] - evalpt[1]) < GEOMDL_DELTA
def test_bspline_curve2d_deriv(spline_curve):
der1 = spline_curve.derivatives(u=0.35, order=2)
spline_curve.evaluator = evaluators.CurveEvaluator2()
der2 = spline_curve.derivatives(u=0.35, order=2)
assert abs(der1[0][0] - der2[0][0]) < GEOMDL_DELTA
assert abs(der1[0][1] - der2[0][1]) < GEOMDL_DELTA
assert abs(der1[1][0] - der2[1][0]) < GEOMDL_DELTA
assert abs(der1[1][1] - der2[1][1]) < GEOMDL_DELTA
assert abs(der1[2][0] - der2[2][0]) < GEOMDL_DELTA
assert abs(der1[2][1] - der2[2][1]) < GEOMDL_DELTA
def test_bspline_curve2d_deriv2(bs_curve):
# Take the derivative
evalpt = bs_curve.evaluate_single(0.35)
der1 = bs_curve.derivatives(u=0.35)
bs_curve.evaluator = evaluators.CurveEvaluator2()
der2 = bs_curve.derivatives(u=0.35)
assert abs(der1[0][0] - evalpt[0]) < GEOMDL_DELTA
assert abs(der1[0][1] - evalpt[1]) < GEOMDL_DELTA
assert abs(der2[0][0] - evalpt[0]) < GEOMDL_DELTA
assert abs(der2[0][1] - evalpt[1]) < GEOMDL_DELTA
def test_bspline_curve3d_deriv1(bs_curve):
# Take the derivative
der1 = bs_curve.derivatives(u=0.35, order=5)
bs_curve.evaluator = evaluators.CurveEvaluator2()
der2 = bs_curve.derivatives(u=0.35, order=5)
assert abs(der1[0][0] - der2[0][0]) < GEOMDL_DELTA
assert abs(der1[0][1] - der2[0][1]) < GEOMDL_DELTA
assert abs(der1[0][2] - der2[0][2]) < GEOMDL_DELTA
assert abs(der1[1][0] - der2[1][0]) < GEOMDL_DELTA
assert abs(der1[1][1] - der2[1][1]) < GEOMDL_DELTA
assert abs(der1[1][2] - der2[1][2]) < GEOMDL_DELTA
assert abs(der1[2][0] - der2[2][0]) < GEOMDL_DELTA
assert abs(der1[2][1] - der2[2][1]) < GEOMDL_DELTA
assert abs(der1[2][2] - der2[2][2]) < GEOMDL_DELTA
curve.ctrlpts = exchange.import_txt("ex_curve02.cpt")
# Auto-generate knot vector
curve.knotvector = utilities.generate_knot_vector(curve.degree, len(curve.ctrlpts))
# Set evaluation delta
curve.delta = 0.01
# Evaluate curve
curve.evaluate()
# Plot the control point polygon and the evaluated curve
vis_comp = VisMPL.VisCurve2D()
curve.vis = vis_comp
curve.render()
# Evaluate derivatives at u = 0.6
ders1 = curve.derivatives(0.6, 4)
# Change evaluator
curve.evaluator = evaluators.CurveEvaluator2()
# Evaluate derivatives at u = 0.6 using the new evaluator
ders2 = curve.derivatives(0.6, 4)
# Compute curve tangent at u = 0.6
curvetan = operations.tangent(curve, 0.6)
# Good to have something here to put a breakpoint
pass