def test_plot_solution_bezier():
knots, B = make_surface_biquadratic()
from pygeoiga.nurb.nurb_creation import NURB
from pygeoiga.analysis.bezier_FE import analyze_bezier
degree, n_xi, n_eta, nel, n, m, ncp, gDof, C, P, W, IEN, K, b, D, B, knots = analyze_bezier(knots, B, refine=10)
kappa = 5
K = form_k(K, IEN, P, kappa, nel, degree, W, C)
############## Play with the boundary conditions
T_t =None
T_l = 5
T_r = 10
T_b = None #lambda x, m: T_l + 10 * np.sin(np.pi * x / m) # [°C]
bc, D = boundary_condition(T_t, T_b, T_l, T_r, D, m, n, ncp)
D, b = solve(bc, K, b, D)
x, y, t = map_bezier_elements(D, degree, P, m,n, ncp, nel, IEN, W, C)
from pygeoiga.plot.nrbplotting_mpl import p_knots, p_cpoints
fig, ax = plt.subplots()
ax = p_cpoints(B, ax=ax, dim=2, color="red", marker=".", markersize=5, point=True, line=False)
ax = p_knots(knots, B, ax=ax, dim=2, color="black", linestyle="--", point=False, line=True)
ax = p_temperature(x, y, t, levels=100, show=False, colorbar=True, ax=ax, point=True, fill=False)
plt.show()
fig, ax = plt.subplots()
#fig, ax = create_figure()
ax = p_cpoints(B, ax=ax, dim=2, color="red", marker=".", markersize=5, point=True, line=False)
ax = p_knots(knots, B, ax=ax, dim=2, color="black", linestyle="--", point=False, line=True)
ax = p_temperature(x, y, t, levels=100, show=False, colorbar=True, ax = ax, point = True, fill=True)
plt.show()
def test_plot_solution_IGA_square():
U, V, B = make_surface_square()
knots = (U,V)
from pygeoiga.analysis.iga import analyze_IGA
degree, n_xi, n_eta, nel, n, m, ncp, gDof, P, W, IEN, K, b, D, knots, B = analyze_IGA(knots, B, refine=10)
kappa = 5
K = form_k_IGA(K, IEN, P, kappa, n_xi, n_eta, degree, knots=knots)
############## Play with the boundary conditions
T_t = 10
T_b = 40 # lambda x, m: T_t + 10 * np.sin(np.pi * x / m) # [°C]
T_l = None
T_r = None
bc, D = boundary_condition(T_t, T_b, T_l, T_r, D, m, n, ncp)
D, b = solve(bc, K, b, D)
x, y, t = map_solution_elements(D, degree, P, n_xi, n_eta, n, m, ncp, IEN, W, knots)
from pygeoiga.plot.nrbplotting_mpl import p_knots, p_cpoints
fig, ax = plt.subplots()
ax = p_cpoints(B, ax=ax, dim=2, color="red", marker=".", markersize=5, point=True, line=False)
ax = p_knots(knots, B, ax=ax, dim=2, color="black", linestyle="--", point=False, line=True)
ax = p_temperature(x, y, t, levels=100, show=False, colorbar=True, ax=ax, point=True, fill=False)
plt.show()
fig, ax = plt.subplots()
# fig, ax = create_figure()
ax = p_cpoints(B, ax=ax, dim=2, color="red", marker=".", markersize=5, point=True, line=False)
ax = p_knots(knots, B, ax=ax, dim=2, color="black", linestyle="--", point=False, line=True)
ax = p_temperature(x, y, t, levels=100, show=False, colorbar=True, ax=ax, point=True, fill=True)
plt.show()
def test_make_NURB_quarter_disk():
from pygeoiga.nurb.cad import quarter_disk
knots, B = quarter_disk()
from pygeoiga.plot.nrbplotting_mpl import create_figure, p_cpoints, p_knots, p_curve, p_surface
fig, [ax2, ax] = plt.subplots(1, 2, sharey=True)
ax = p_knots(knots, B, ax=ax, dim=2, point=False, line=True, color="k")
ax = p_surface(knots,
B,
ax=ax,
dim=2,
color="blue",
border=False,
alpha=0.5)
ax.spines["right"].set_visible(False)
ax.spines["top"].set_visible(False)
ax.set_xlabel("x")
ax.set_aspect("equal")
ax2 = p_cpoints(B,
ax=ax2,
dim=2,
color="blue",
linestyle="-",
point=False,
line=True)
ax2 = p_cpoints(B,
ax=ax2,
dim=2,
color="red",
marker="o",
point=True,
line=False)
n, m = B.shape[0], B.shape[1]
P = np.asarray([(B[x, y, 0], B[x, y, 1]) for y in range(m)
for x in range(n)])
for count, point in enumerate(P):
ax2.annotate(str(count),
point,
fontsize=8,
xytext=(3, 7),
textcoords="offset points")
ax2.spines["right"].set_visible(False)
ax2.spines["top"].set_visible(False)
ax2.set_xlabel("x")
ax2.set_ylabel("y")
ax2.set_aspect("equal")
fig.show()
save = False
if save or save_all:
fig.savefig(fig_folder + "NURBS_surface.pdf", **kwargs_savefig)
def show_plots():
from pygeoiga.plot.nrbplotting_mpl import p_surface, p_cpoints, p_knots
import matplotlib
import matplotlib.pyplot as mpl
color = None
mpl.close("all")
figa, axa = mpl.subplots()
org = False
if org:
image = mpl.imread(
"/home/danielsk78/GitProjects/master_thesis_IGA-Geothermal-Modeling/IGA/pygeoiga/nurb/data/salt_diapir.png"
)
extent = [0, 6000, 0, 3000]
axa.imshow(np.flipud(image),
extent=extent,
origin="lower",
aspect="auto")
major_ticks_x = np.arange(0, extent[1] + 1, 1000)
major_ticks_y = np.arange(0, extent[3] + 1, 1000)
minor_ticks_x = np.arange(0, extent[1] + 1, 200)
minor_ticks_y = np.arange(0, extent[3] + 1, 200)
axa.set_xticks(major_ticks_x)
axa.set_xticks(minor_ticks_x, minor=True)
axa.set_yticks(major_ticks_y)
axa.set_yticks(minor_ticks_y, minor=True)
axa.grid(which='both')
for i, surf in enumerate(cpoints):
col = color[i] if color is not None else np.random.rand(3, )
p_surface(knots[i], surf, ax=axa, dim=2, color=col, alpha=0.5)
p_cpoints(surf,
ax=axa,
line=False,
point=True,
color=col,
dim=2)
p_knots(knots[i], surf, ax=axa, dim=2, point=False, color=col)
mpl.show()
color = [
"red", "red", "red", "blue", "blue", "blue", "brown", "blue",
"brown", "yellow", "blue", "yellow", "gray", "blue", "gray",
"green", "green", "green"
]
figs, axs = mpl.subplots()
for i, surf in enumerate(cpoints):
col = color[i] if color is not None else np.random.rand(3, )
p_surface(knots[i], surf, ax=axs, dim=2, color=col)
#p_cpoints(surf, ax=axs, line=False, point=True, color=col, dim=2)
#p_knots(knots[i], surf, ax=axs, dim=2, point=False, color=col)
mpl.show()
def plot(geometry, file_name):
from pygeoiga.plot.nrbplotting_mpl import p_surface, p_cpoints, p_knots, create_figure
#fig, ax = create_figure("2d")
fig, ax = plt.subplots(constrained_layout=True)
for patch_id in geometry.keys():
ax = p_cpoints(geometry[patch_id].get("B"),
ax=ax,
dim=2,
color=geometry[patch_id].get("color"),
marker="o",
linestyle="-",
point=True,
line=True)
P = geometry[patch_id].get("list_cp")
glob_num = geometry[patch_id].get("glob_num")
for count, point in enumerate(P):
ax.annotate(str(glob_num[count]),
point,
xytext=(8, 5),
textcoords="offset points")
ax.spines["right"].set_visible(False)
ax.spines["top"].set_visible(False)
ax.set_xlabel("$x$")
ax.set_ylabel("$y$")
ax.set_aspect("equal")
fig.show()
save = False
if save or save_all:
fig.savefig(fig_folder + file_name, **kwargs_savefig)
def plot_cpoints(self, ax=None, **kwargs_cpoints):
if ax is None:
fig, ax = create_figure("2d", figsize=(10, 20))
for patch_name in tqdm(self.geometry.keys(),
desc="Plotting control points"):
ax = p_cpoints(self.geometry[patch_name].get("B"),
ax=ax,
**kwargs_cpoints)
return ax
def plot(geometry, file_name):
from pygeoiga.plot.nrbplotting_mpl import p_surface, p_cpoints, p_knots
fig, [ax2, ax] = plt.subplots(1,2,figsize=(10,4),constrained_layout=True)
#fig2, ax2 = plt.subplots(constrained_layout=True)
for patch_id in geometry.keys():
ax = p_knots(geometry[patch_id].get("knots"),
geometry[patch_id].get("B"),
ax=ax,
color='k',
dim=2,
point=False,
line=True)
print(patch_id, geometry[patch_id].get("knots"))
ax = p_surface(geometry[patch_id].get("knots"),
geometry[patch_id].get("B"),
color=geometry[patch_id].get("color"),
dim=2,
fill=True,
border=False,
ax=ax)
ax2 = p_cpoints(geometry[patch_id].get("B"),
dim=2,
ax=ax2,
point=True,
marker="o",
color=geometry[patch_id].get("color"),
linestyle="-",
line=True)
ax.legend(labels=list(geometry.keys()),
handles=ax.patches,
loc='upper left',
bbox_to_anchor=(1., .5),
borderaxespad=0)
ax.spines['right'].set_visible(False)
ax.spines['top'].set_visible(False)
ax.set_aspect("equal")
ax.set_ylabel(r"$y$")
ax.set_xlabel(r"$x$")
ax2.spines['right'].set_visible(False)
ax2.spines['top'].set_visible(False)
ax2.set_aspect("equal")
ax2.set_ylabel(r"$y$")
ax2.set_xlabel(r"$x$")
fig.show()
save = False
if save or save_all:
fig.savefig(fig_folder + file_name, **kwargs_savefig)
def plot(geometry, file_name, c, l):
from pygeoiga.plot.nrbplotting_mpl import p_surface, p_cpoints, p_knots, create_figure
#fig, ax = create_figure("2d")
fig, [ax, ax2] = plt.subplots(1, 2, figsize=(10, 3))
for patch_id in geometry.keys():
ax2 = p_surface(geometry[patch_id].get("knots"),
geometry[patch_id].get("B"),
ax=ax2,
dim=2,
color=geometry[patch_id].get("color"),
alpha=0.5)
ax = p_cpoints(geometry[patch_id].get("B"),
ax=ax,
dim=2,
color=geometry[patch_id].get("color"),
marker="o",
linestyle="-",
point=True,
line=True)
ax2 = p_knots(geometry[patch_id].get("knots"),
geometry[patch_id].get("B"),
ax=ax2,
dim=2,
point=False,
line=True,
color="k")
ax.set_title("Control net")
ax.spines["right"].set_visible(False)
ax.spines["top"].set_visible(False)
ax.set_xlabel("$x$")
ax.set_ylabel("$y$")
ax.set_aspect("equal")
ax2.set_title("Physical space ($x,y$)")
ax2.spines["right"].set_visible(False)
ax2.spines["top"].set_visible(False)
ax2.set_xlabel("$x$")
ax2.set_ylabel("$y$")
ax2.set_aspect("equal")
if c:
ax2.annotate("$\Omega_1$", (70, 80), fontsize=20)
ax2.annotate("$\Omega_2$", (300, 80), fontsize=20)
ax2.annotate("$\Omega_3$", (100, 240), fontsize=20)
c = False
fig.show()
save = False
if save or save_all:
fig.savefig(fig_folder + file_name, **kwargs_savefig)
def test_plot_solution_mp_fault():
geometry = make_fault_model(refine=True)
geometry, gDoF = patch_topology(geometry)
K_glob = np.zeros((gDoF, gDoF))
K_glob = form_k_IGA_mp(geometry, K_glob)
D = np.zeros(gDoF)
b = np.zeros(gDoF)
T_t = 10 # [°C]
T_b = 40 # [°C]
T_l = None
T_r = None
bc, D = boundary_condition_mp(geometry, D, T_t, T_b, T_l, T_r)
bc["gDOF"] = gDoF
D, b = solve(bc, K_glob, b, D)
geometry = map_MP_elements(geometry, D)
from pygeoiga.plot.nrbplotting_mpl import p_surface, p_cpoints, p_knots, create_figure
fig, ax = create_figure("2d")
fig_sol, ax_sol = create_figure("2d")#
fig_point, ax_point = create_figure("2d") #
for patch_id in geometry.keys():
ax = p_surface(geometry[patch_id].get("knots"), geometry[patch_id].get("B"), ax=ax, dim=2,
color=geometry[patch_id].get("color"), alpha=0.5)
ax = p_cpoints(geometry[patch_id].get("B"), ax=ax, dim=2, color="black", marker=".", point=True, line=False)
ax = p_knots(geometry[patch_id].get("knots"), geometry[patch_id].get("B"), ax=ax, dim=2, point=False,
line=True)
#ax_sol = p_cpoints(geometry[patch_id].get("B"), ax=ax_sol, dim=2, color=geometry[patch_id].get("color"), marker=".", point=True, line=False)
#ax_sol = p_knots(geometry[patch_id].get("knots"), geometry[patch_id].get("B"),
# color = geometry[patch_id].get("color"), ax=ax_sol, dim=2, point=False, line=True)
x = geometry[patch_id].get("x_sol")
y = geometry[patch_id].get("y_sol")
t = geometry[patch_id].get("t_sol")
ax_sol = p_temperature(x,y,t, vmin = np.min(D), vmax = np.max(D), levels=50, show=False, colorbar=True, ax=ax_sol,
point = False, fill=True, contour=False)
ax_point = p_temperature(x, y, t, vmin=np.min(D), vmax=np.max(D), levels=100, show=False, colorbar=True, ax=ax_point,
point=True, fill=False)
ax_sol = p_surface(geometry[patch_id].get("knots"), geometry[patch_id].get("B"), ax=ax_sol, dim=2,
color="k", alpha=1, fill=False, border=True)
fig.show()
fig_sol.show()
fig_point.show()
fig_all, ax_all = create_figure("2d")
p_temperature_mp(geometry=geometry, vmin=np.min(D), vmax=np.max(D), levels=200, show=False, colorbar=True, ax=ax_all,
point=False, fill=True, contour=False)
fig_all.show()
def test_plot_biquadratic():
from pygeoiga.nurb.cad import make_surface_biquadratic
from pygeoiga.plot.nrbplotting_mpl import p_knots, create_figure, p_cpoints
from pygeoiga.nurb.refinement import knot_insertion
knots, cp = make_surface_biquadratic()
shape = np.asarray(cp.shape)
shape[-1] = cp.shape[-1] + 1
B = np.ones((shape))
B[..., :cp.shape[-1]] = cp
fig, ax = create_figure("2d")
ax = p_knots(knots, B, ax=ax, dim=2, point=False, line=True, color="b")
ax.set_axis_off()
plt.show()
direction = 0
knot_ins = np.asarray([0.2, 0.8])
B_new, knots_new = knot_insertion(B.copy(), (2, 2), knots.copy(), knot_ins, direction=direction)
knot_ins = np.asarray([0.3, 0.7])
direction = 1
B_new2, knots_new2 = knot_insertion(B_new, (2, 2), knots_new, knot_ins, direction=direction)
fig, ax = create_figure("2d")
ax = p_knots(knots_new2, B_new2, ax=ax, dim=2, point=False, line=True, color="b")
ax = p_cpoints(B_new2, ax=ax, dim=2, point=True, line=False, color="red")
ax.set_axis_off()
plt.show()
direction = 0
knot_ins = [0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9]
B_new, knots_new = knot_insertion(B.copy(), (2, 2), knots.copy(), knot_ins, direction=direction)
direction = 1
knot_ins = [0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9]
B_new2, knots_new2 = knot_insertion(B_new, (2, 2), knots_new, knot_ins, direction=direction)
fig, ax = create_figure("2d")
ax = p_knots(knots_new2, B_new2, ax=ax, dim=2, point=False, line=True, color="b")
#ax = p_cpoints(geometry[patch_id].get("B"), ax=ax, dim=2, color="black", marker=".", point=True, line=False)
ax.set_axis_off()
plt.show()
def test_IEN():
from pygeoiga.nurb.cad import make_surface_biquadratic
knots, B = make_surface_biquadratic()
from pygeoiga.plot.nrbplotting_mpl import create_figure, p_cpoints, p_knots, p_curve, p_surface
fig, ax = plt.subplots()
ax = p_knots(knots, B, ax=ax, dim=2, point=False, line=True, color="k")
ax = p_surface(knots,
B,
ax=ax,
dim=2,
color="blue",
border=False,
alpha=0.5)
ax = p_cpoints(B,
ax=ax,
dim=2,
color="red",
marker="o",
point=True,
line=False)
n, m = B.shape[0], B.shape[1]
P = np.asarray([(B[x, y, 0], B[x, y, 1]) for x in range(n)
for y in range(m)])
for count, point in enumerate(P):
ax.annotate(str(count),
point,
xytext=(5, 5),
textcoords="offset points")
ax.spines["right"].set_visible(False)
ax.spines["top"].set_visible(False)
ax.set_xlabel("$x$")
ax.set_ylabel("$y$")
ax.set_aspect(0.8)
fig.show()
def test_make_NURB_biquadratic():
from pygeoiga.nurb.cad import make_surface_biquadratic
knots, B = make_surface_biquadratic()
from pygeoiga.plot.nrbplotting_mpl import create_figure, p_cpoints, p_knots, p_curve, p_surface
fig, [ax2, ax] = plt.subplots(1, 2, sharey=True, figsize=(7, 3))
ax = p_knots(knots, B, ax=ax, dim=2, point=False, line=True, color="k")
ax = p_surface(knots,
B,
ax=ax,
dim=2,
color="blue",
border=False,
alpha=0.5)
ax.spines["right"].set_visible(False)
ax.spines["top"].set_visible(False)
ax.set_xlabel("x")
#ax.annotate("1", (-1, 1), fontsize=20)
#ax.annotate("2", (1.6, 3), fontsize=20)
ax.set_aspect(0.8)
ax2 = p_cpoints(B,
ax=ax2,
dim=2,
color="blue",
linestyle="-",
point=False,
line=True)
ax2 = p_cpoints(B,
ax=ax2,
dim=2,
color="red",
marker="s",
point=True,
line=False)
n, m = B.shape[0], B.shape[1]
P = np.asarray([(B[x, y, 0], B[x, y, 1]) for x in range(n)
for y in range(m)])
for count, point in enumerate(P):
ax2.annotate("$P_{%s}$" % str(count),
point,
fontsize=8,
xytext=(3, 7),
textcoords="offset points")
ax2.spines["right"].set_visible(False)
ax2.spines["top"].set_visible(False)
ax2.set_xlabel("x")
ax2.set_ylabel("y")
ax2.set_aspect(0.8)
fig.show()
from pygeoiga.engine.NURB_engine import basis_function_array_nurbs
fig3 = plt.figure(constrained_layout=True)
gs = fig3.add_gridspec(2,
2,
hspace=0,
wspace=0,
width_ratios=[0.2, 1],
height_ratios=[1, 0.2])
(ax_v, ax3), (no, ax_u) = gs.subplots(sharex=True, sharey=True)
no.remove()
N_spline_u, _ = basis_function_array_nurbs(knot_vector=knots[0],
degree=2,
resolution=100)
N_spline_v, _ = basis_function_array_nurbs(knot_vector=knots[1],
degree=2,
resolution=100)
resol = np.linspace(0, 1, 100)
ax_u.plot(resol, N_spline_u)
ax_u.spines["top"].set_visible(False)
ax_u.spines["right"].set_visible(False)
ax_u.set_xlim(0, 1)
ax_u.set_ylim(0, 1)
ax_v.plot(N_spline_v, resol)
ax_v.spines["top"].set_visible(False)
ax_v.spines["right"].set_visible(False)
ax_v.set_yticks(knots[2:-2])
ax_v.set_xlim(1, 0)
ax_v.set_ylim(0, 1)
for i in knots[0]:
ax3.vlines(i, 0, 1, 'k')
for j in knots[1]:
ax3.hlines(j, 0, 1, 'k')
ax3.set_xlim(0, 1)
ax3.set_ylim(0, 1)
ax3.set_axis_off()
ax_u.set_xlabel("$u$")
ax_v.set_ylabel("$v$")
ax_v.set_yticks(knots[1][2:-2])
ax_u.set_xticks(knots[0][2:-2])
for ax in ax_u, ax_v, ax3, no:
ax.label_outer()
fig3.show()
save = True
if save or save_all:
fig.savefig(fig_folder + "B-spline_biquadratic.pdf", **kwargs_savefig)
fig3.savefig(fig_folder + "B-spline_biquadratic_parameter.pdf",
**kwargs_savefig)
def test_show_modifysimple_mesh():
from pygeoiga.plot.nrbplotting_mpl import create_figure, p_cpoints, p_knots, p_curve, p_surface
cp = np.array([[[0, 0], [1, 0], [2, 0], [3, 0]],
[[0, 1], [1, 1], [2, 1], [3, 1]],
[[0, 2], [1, 2], [2, 2], [3, 2]]])
kn1 = [0, 0, 0.5, 1, 1]
kn2 = [0, 0, 1 / 3, 2 / 3, 1, 1]
fig, ax = create_figure("2d")
#ax.set_axis_off()
ax.spines["right"].set_visible(False)
ax.spines["top"].set_visible(False)
ax.set_xlabel("x")
ax.set_ylabel("y")
ax.set_xticks([])
ax.set_yticks([])
ax = p_knots([kn1, kn2],
cp,
ax=ax,
dim=2,
point=False,
line=True,
color="black")
ax = p_cpoints(cp,
ax=ax,
dim=2,
color="red",
marker="o",
point=True,
line=False)
n, m = cp.shape[0], cp.shape[1]
P = np.asarray([(cp[x, y, 0], cp[x, y, 1]) for x in range(n)
for y in range(m)])
for count, point in enumerate(P):
ax.annotate(str(count),
point,
xytext=(5, 5),
textcoords="offset points")
ax.annotate("$\Omega_1$", (0.5, 0.5),
fontsize=20,
xytext=(-5, -5),
textcoords="offset points")
ax.annotate("$\Omega_2$", (1.5, 0.5),
fontsize=20,
xytext=(-5, -5),
textcoords="offset points")
ax.annotate("$\Omega_3$", (2.5, 0.5),
fontsize=20,
xytext=(-5, -5),
textcoords="offset points")
ax.annotate("$\Omega_4$", (0.5, 1.5),
fontsize=20,
xytext=(-5, -5),
textcoords="offset points")
ax.annotate("$\Omega_5$", (1.5, 1.5),
fontsize=20,
xytext=(-5, -5),
textcoords="offset points")
ax.annotate("$\Omega_6$", (2.5, 1.5),
fontsize=20,
xytext=(-5, -5),
textcoords="offset points")
fig.show()
cp_2 = np.array([[[0., 0.], [0.5, 0.], [1., 0.], [1.5, 0.], [2., 0.],
[2.5, 0.], [3., 0.]],
[[0., 0.5], [0.5, 0.5], [1., 0.5], [1.5, 0.5], [2., 0.5],
[2.5, 0.5], [3., 0.5]],
[[0., 1.], [0.5, 1.], [1., 1.], [1.5, 1.], [2., 1.],
[2.5, 1.], [3., 1.]],
[[0., 1.5], [0.5, 1.5], [1., 1.5], [1.5, 1.5], [2., 1.5],
[2.5, 1.5], [3., 1.5]],
[[0., 2.], [0.5, 2.], [1., 2.], [1.5, 2.], [2., 2.],
[2.5, 2.], [3., 2.]]])
knots = (np.array([0., 0., 0., 0.5, 0.5, 1., 1., 1.]),
np.array([
0., 0., 0., 0.33333333, 0.33333333, 0.66666667, 0.66666667,
1., 1., 1.
]))
fig2, ax2 = create_figure("2d")
#ax2.set_axis_off()
ax2.spines["right"].set_visible(False)
ax2.spines["top"].set_visible(False)
ax2.set_xlabel("x")
ax2.set_ylabel("y")
ax2.set_xticks([])
ax2.set_yticks([])
ax2 = p_knots(knots,
cp_2,
ax=ax2,
dim=2,
point=False,
line=True,
color="black")
ax2 = p_cpoints(cp_2,
ax=ax2,
dim=2,
color="red",
marker="o",
point=True,
line=False)
n, m = cp_2.shape[0], cp_2.shape[1]
P = np.asarray([(cp_2[x, y, 0], cp_2[x, y, 1]) for x in range(n)
for y in range(m)])
for count, point in enumerate(P):
ax2.annotate(str(count),
point,
xytext=(5, 5),
textcoords="offset points")
disp = (28, 30)
ax2.annotate("$\Omega_1$", (0.5, 0.5),
fontsize=20,
xytext=disp,
textcoords="offset points")
ax2.annotate("$\Omega_2$", (1.5, 0.5),
fontsize=20,
xytext=disp,
textcoords="offset points")
ax2.annotate("$\Omega_3$", (2.5, 0.5),
fontsize=20,
xytext=disp,
textcoords="offset points")
ax2.annotate("$\Omega_4$", (0.5, 1.5),
fontsize=20,
xytext=disp,
textcoords="offset points")
ax2.annotate("$\Omega_5$", (1.5, 1.5),
fontsize=20,
xytext=disp,
textcoords="offset points")
ax2.annotate("$\Omega_6$", (2.5, 1.5),
fontsize=20,
xytext=disp,
textcoords="offset points")
fig2.show()
save = True
if save or save_all:
fig.savefig(fig_folder + "mesh_1degree.pdf", **kwargs_savefig)
fig2.savefig(fig_folder + "mesh_2degree.pdf", **kwargs_savefig)
def plot_cpoints(self, ax=None, **kwargs_cpoints):
if ax is None:
fig, ax = create_figure("2d", figsize=(10, 20))
ax = p_cpoints(self.B, ax=ax, **kwargs_cpoints)
return ax
def test_show_simple_mesh_IGA():
from pygeoiga.plot.nrbplotting_mpl import create_figure, p_cpoints, p_knots, p_curve, p_surface
cp = np.array([[[0, 0], [3, 0]], [[0, 2], [3, 2]]])
kn1 = [0, 0, 1, 1]
kn2 = [0, 0, 1, 1]
knots = [kn1, kn2]
shape = np.asarray(cp.shape)
shape[-1] = 3 # To include the weights in the last term
B = np.ones(shape)
B[..., :2] = cp
from pygeoiga.nurb.refinement import knot_insertion
B, knots = knot_insertion(B, [1, 1], knots, [0.5], 0)
B, knots = knot_insertion(B, [1, 1], knots, [1 / 3, 2 / 3], 1)
fig, ax = create_figure("2d")
ax.spines["right"].set_visible(False)
ax.spines["top"].set_visible(False)
ax.set_xlabel("x")
ax.set_ylabel("y")
ax.set_xticks([])
ax.set_yticks([])
ax = p_knots(knots, B, ax=ax, dim=2, point=False, line=True, color="black")
ax = p_cpoints(B,
ax=ax,
dim=2,
color="red",
marker="o",
point=True,
line=False)
n, m = B.shape[0], B.shape[1]
P = np.asarray([(B[x, y, 0], B[x, y, 1]) for x in range(n)
for y in range(m)])
for count, point in enumerate(P):
ax.annotate(str(count),
point,
xytext=(5, 5),
textcoords="offset points")
ax.annotate("$\Omega_1$", (0.5, 0.5),
fontsize=20,
xytext=(-5, -5),
textcoords="offset points")
ax.annotate("$\Omega_2$", (1.5, 0.5),
fontsize=20,
xytext=(-5, -5),
textcoords="offset points")
ax.annotate("$\Omega_3$", (2.5, 0.5),
fontsize=20,
xytext=(-5, -5),
textcoords="offset points")
ax.annotate("$\Omega_4$", (0.5, 1.5),
fontsize=20,
xytext=(-5, -5),
textcoords="offset points")
ax.annotate("$\Omega_5$", (1.5, 1.5),
fontsize=20,
xytext=(-5, -5),
textcoords="offset points")
ax.annotate("$\Omega_6$", (2.5, 1.5),
fontsize=20,
xytext=(-5, -5),
textcoords="offset points")
fig.show()
knots = [kn1, kn2]
shape = np.asarray(cp.shape)
shape[-1] = 3 # To include the weights in the last term
B = np.ones(shape)
B[..., :2] = cp
from pygeoiga.nurb.refinement import degree_elevation
B, knots = degree_elevation(B, knots, direction=0)
B, knots = degree_elevation(B, knots, direction=1)
from pygeoiga.nurb.refinement import knot_insertion
B, knots = knot_insertion(B, [2, 2], knots, [0.5], 0)
B, knots = knot_insertion(B, [2, 2], knots, [1 / 3, 2 / 3], 1)
fig2, ax2 = create_figure("2d")
# ax2.set_axis_off()
ax2.spines["right"].set_visible(False)
ax2.spines["top"].set_visible(False)
ax2.set_xlabel("x")
ax2.set_ylabel("y")
ax2.set_xticks([])
ax2.set_yticks([])
ax2 = p_knots(knots,
B,
ax=ax2,
dim=2,
point=False,
line=True,
color="black")
ax2 = p_cpoints(B,
ax=ax2,
dim=2,
color="red",
marker="o",
point=True,
line=False)
n, m = B.shape[0], B.shape[1]
P = np.asarray([(B[x, y, 0], B[x, y, 1]) for x in range(n)
for y in range(m)])
for count, point in enumerate(P):
ax2.annotate(str(count),
point,
xytext=(5, 5),
textcoords="offset points")
disp = (28, 30)
ax2.annotate("$\Omega_1$", (0.5, 0.5),
fontsize=20,
xytext=disp,
textcoords="offset points")
ax2.annotate("$\Omega_2$", (1.5, 0.5),
fontsize=20,
xytext=disp,
textcoords="offset points")
ax2.annotate("$\Omega_3$", (2.5, 0.5),
fontsize=20,
xytext=disp,
textcoords="offset points")
ax2.annotate("$\Omega_4$", (0.5, 1.5),
fontsize=20,
xytext=disp,
textcoords="offset points")
ax2.annotate("$\Omega_5$", (1.5, 1.5),
fontsize=20,
xytext=disp,
textcoords="offset points")
ax2.annotate("$\Omega_6$", (2.5, 1.5),
fontsize=20,
xytext=disp,
textcoords="offset points")
fig2.show()
save = True
if save or save_all:
fig.savefig(fig_folder + "NURB_mesh_1_degree.pdf", **kwargs_savefig)
fig2.savefig(fig_folder + "NURB_mesh_2_degree.pdf", **kwargs_savefig)
def plot(B, knots, file_name):
from pygeoiga.plot.nrbplotting_mpl import create_figure, p_cpoints, p_knots, p_curve, p_surface
fig, [ax2, ax] = plt.subplots(1,
2,
figsize=(10, 5),
constrained_layout=True)
ax = p_knots(knots, B, ax=ax, dim=2, point=False, line=True, color="k")
ax = p_surface(knots,
B,
ax=ax,
dim=2,
color="blue",
border=False,
alpha=0.5)
ax.spines["right"].set_visible(False)
ax.spines["top"].set_visible(False)
ax.set_xlabel("$x$")
ax.set_ylabel("$y$")
ax.set_aspect(0.8)
ax2 = p_cpoints(B,
ax=ax2,
dim=2,
color="blue",
linestyle="-",
point=False,
line=True)
ax2 = p_cpoints(B,
ax=ax2,
dim=2,
color="red",
marker="o",
point=True,
line=False)
n, m = B.shape[0], B.shape[1]
ax2.spines["right"].set_visible(False)
ax2.spines["top"].set_visible(False)
ax2.set_xlabel("$x$")
ax2.set_ylabel("$y$", rotation=90)
ax2.set_aspect(0.8)
ax.set_title("Physical space ($x,y$)", fontsize=20)
ax2.set_title("Control net", fontsize=20)
fig.tight_layout(pad=0, h_pad=0, w_pad=0)
fig.show()
from pygeoiga.engine.NURB_engine import basis_function_array_nurbs
fig3 = plt.figure(constrained_layout=True)
gs = fig3.add_gridspec(2,
2,
hspace=0,
wspace=0,
width_ratios=[0.2, 1],
height_ratios=[1, 0.2])
(ax_v, ax3), (no, ax_u) = gs.subplots(sharex=True, sharey=True)
no.remove()
N_spline_u, _ = basis_function_array_nurbs(knot_vector=knots[0],
degree=2,
resolution=100)
N_spline_v, _ = basis_function_array_nurbs(knot_vector=knots[1],
degree=2,
resolution=100)
resol = np.linspace(0, 1, 100)
ax_u.plot(resol, N_spline_u)
ax_u.spines["top"].set_visible(False)
ax_u.spines["right"].set_visible(False)
ax_u.set_xlim(0, 1)
ax_u.set_ylim(0, 1)
ax_v.plot(N_spline_v, resol)
ax_v.spines["top"].set_visible(False)
ax_v.spines["right"].set_visible(False)
ax_v.set_yticks(knots[2:-2])
ax_v.set_xlim(1, 0)
ax_v.set_ylim(0, 1)
for i in knots[0]:
ax3.vlines(i, 0, 1, 'k')
for j in knots[1]:
ax3.hlines(j, 0, 1, 'k')
ax3.set_xlim(0, 1)
ax3.set_ylim(0, 1)
ax3.set_axis_off()
ax3.set_title("Parametric space ($u,v$)", fontsize=20)
ax_u.set_xlabel("$u$")
ax_v.set_ylabel("$v$")
ax_v.set_yticks(knots[1][2:-2])
ax_u.set_xticks(knots[0][2:-2])
for ax in ax_u, ax_v, ax3, no:
ax.label_outer()
fig3.show()
save = False
if save or save_all:
fig.savefig(fig_folder + file_name, **kwargs_savefig)
fig3.savefig(
fig_folder + file_name.split(".")[0] + "_parameter.pdf",
**kwargs_savefig)
def test_explicit_model():
import matplotlib
from pygeoiga.plot.nrbplotting_mpl import create_figure, p_cpoints, p_knots, p_curve, p_surface
img = matplotlib.image.imread('dike.jpg')
fig, ax = plt.subplots()
ax.imshow(img, alpha=.8, extent=(0, 300, 0, 178))
ax.set_aspect("equal")
ax.set_xlabel("x (m)")
ax.set_ylabel("y (m)")
### Big dike
cp_1 = np.array([[[223, 0], [145, 60], [108, 90], [71, 149]],
[[300, 0], [300, 4.5], [141, 111], [104, 159]]])
kn1_1 = [0, 0, 1, 1]
kn1_2 = [0, 0, 0.3, 0.6, 1, 1]
knots_1 = [kn1_1, kn1_2]
ax = p_cpoints(cp_1,
ax=ax,
dim=2,
color="black",
marker="s",
point=True,
line=False)
ax = p_knots(knots_1, cp_1, ax=ax, dim=2, point=True, line=True)
### middle dike
cp_2 = np.array([[[0, 40], [92, 86], [197, 154], [300, 178]],
[[0, 94], [80, 120], [91, 144], [204, 178]]])
kn2_1 = [0, 0, 1, 1]
kn2_2 = [0, 0, 0.3, 0.6, 1, 1]
knots_2 = [kn2_1, kn2_2]
ax = p_cpoints(cp_2,
ax=ax,
dim=2,
color="black",
marker="s",
point=True,
line=False)
ax = p_knots(knots_2, cp_2, ax=ax, dim=2, point=True, line=True)
### Weathered dike
cp_3 = np.array([[[0, 94], [90, 100], [91, 144], [204, 178]],
[[0, 100], [80, 150], [91, 160], [204, 178]],
[[0, 178], [80, 178], [142, 178], [204, 178]]])
kn3_1 = [0, 0, 0, 1, 1, 1]
kn3_2 = [0, 0, 0, 0.5, 1, 1, 1]
knots_3 = [kn3_1, kn3_2]
ax = p_cpoints(cp_3,
ax=ax,
dim=2,
color="black",
marker="s",
point=True,
line=False)
ax = p_knots(knots_3, cp_3, ax=ax, dim=2, point=True, line=True)
### Bottom
cp_4 = np.array([[[0, 40], [92, 86], [197, 154], [300, 178]],
[[0, 0], [92, 0], [197, 0], [300, 0]]])
kn4_1 = [0, 0, 1, 1]
kn4_2 = [0, 0, 0.3, 0.6, 1, 1]
knots_4 = [kn4_1, kn4_2]
ax = p_cpoints(cp_4,
ax=ax,
dim=2,
color="black",
marker="s",
point=True,
line=False)
ax = p_knots(knots_4, cp_4, ax=ax, dim=2, point=True, line=True)
ax.set_xlim(0, 300)
ax.set_ylim(0, 178)
fig.show()
fig2, ax2 = create_figure("2d")
p_surface(knots_4,
cp_4,
ax=ax2,
dim=2,
color="red",
border=False,
label="Dike1")
p_surface(knots_2,
cp_2,
ax=ax2,
dim=2,
color="blue",
border=False,
label="Dike2")
p_surface(knots_1,
cp_1,
ax=ax2,
dim=2,
color="yellow",
border=False,
label="Dike3")
p_surface(knots_3,
cp_3,
ax=ax2,
dim=2,
color="gray",
border=False,
label="Unknown")
ax2.set_xlim(0, 300)
ax2.set_ylim(0, 178)
ax2.set_aspect("equal")
ax2.set_xlabel("x (m)")
ax2.set_ylabel("y (m)")
ax2.legend(loc="center right", facecolor='white', framealpha=0.8)
fig2.show()
fig3, ax3 = create_figure("2d")
ax3.imshow(img, alpha=.8, extent=(0, 300, 0, 178))
#p_surface(knots_4, cp_4, ax=ax3, dim=2, color="red", fill=False, label="Dike1")
#p_surface(knots_2, cp_2, ax=ax3, dim=2, color="blue", fill=False, label="Dike2")
#p_surface(knots_1, cp_1, ax=ax3, dim=2, color="yellow", fill=False, label="Dike3")
#p_surface(knots_3, cp_3, ax=ax3, dim=2, color="gray", fill=False, label="Unknown")
ax3.set_xlim(0, 300)
ax3.set_ylim(0, 178)
ax3.set_aspect("equal")
ax3.set_xlabel("x (m)")
ax3.set_ylabel("y (m)")
#ax3.legend(loc="center right")
fig3.show()
save = False
if save or save_all:
fig2.savefig(fig_folder + "model_explicit.pdf", **kwargs_savefig)
fig3.savefig(fig_folder + "original_explicit.pdf", **kwargs_savefig)
def test_image_example2():
from pygeoiga.nurb.cad import make_surface_biquadratic
knots, B = make_surface_biquadratic()
from pygeoiga.nurb.refinement import knot_insertion
knot_ins_1 = [0.3, 0.6]
knot_ins_0 = [0.25, 0.75]
B, knots = knot_insertion(B, (2, 2), knots, knot_ins_0, direction=0)
B, knots = knot_insertion(B, (2, 2), knots, knot_ins_1, direction=1)
before = B
from pygeoiga.plot.nrbplotting_mpl import create_figure, p_cpoints, p_knots, p_curve, p_surface
from pygeoiga.engine.NURB_engine import basis_function_array_nurbs
fig = plt.figure(constrained_layout=True)
gs = fig.add_gridspec(3,
3,
hspace=0,
wspace=0,
width_ratios=[0.2, 0.2, 1],
height_ratios=[1, 0.2, 0.2])
(ax_bv, ax_v, ax2), (no1, no2, ax_u), (no3, no4,
ax_bu) = gs.subplots(sharex=True,
sharey=True)
for no in no1, no2, no3, no4:
no.remove()
N_spline_u, _ = basis_function_array_nurbs(knot_vector=knots[0],
degree=2,
resolution=100)
N_spline_v, _ = basis_function_array_nurbs(knot_vector=knots[1],
degree=2,
resolution=100)
resol = np.linspace(0, 1, 100)
ax_u.plot(resol, N_spline_u)
ax_u.spines["top"].set_visible(False)
ax_u.spines["right"].set_visible(False)
ax_u.set_xlim(0, 1)
ax_u.set_ylim(0, 1)
ax_v.plot(N_spline_v, resol)
ax_v.spines["top"].set_visible(False)
ax_v.spines["right"].set_visible(False)
ax_v.set_yticks(knots[2:-2])
ax_v.set_xlim(0, 1)
ax_v.set_ylim(0, 1)
ax_u.set_xlabel("$u$")
ax_v.set_ylabel("$v$")
ax_v.set_xlabel("$N(v)$")
ax_u.set_ylabel("$N(u)$")
ax_v.set_yticks(knots[1][2:-2])
ax_u.set_xticks(knots[0][2:-2])
for i in knots[0]:
ax2.vlines(i, 0, 1, 'k')
for j in knots[1]:
ax2.hlines(j, 0, 1, 'k')
ax2.set_xlim(0, 1)
ax2.set_ylim(0, 1)
ax2.set_axis_off()
fig2, ax = plt.subplots(constrained_layout=True)
ax = p_cpoints(B,
ax=ax,
dim=2,
point=False,
line=True,
color="black",
linestyle="-")
ax = p_cpoints(B, ax=ax, dim=2, point=True, line=False, color="red")
ax.spines["right"].set_visible(False)
ax.spines["top"].set_visible(False)
ax.set_xlabel("$x$")
ax.set_ylabel("$y$")
ax.set_aspect(0.8)
fig2.tight_layout(pad=0, h_pad=0, w_pad=0)
fig2.show()
from pygeoiga.nurb.refinement import knot_insertion
knot_ins_1 = [0.3, 0.6]
knot_ins_0 = [0.25, 0.5, 0.75]
B, knots = knot_insertion(B, (2, 2), knots, knot_ins_0, direction=0)
B, knots = knot_insertion(B, (2, 2), knots, knot_ins_1, direction=1)
new = B
N_spline_u, _ = basis_function_array_nurbs(knot_vector=knots[0],
degree=2,
resolution=100)
N_spline_v, _ = basis_function_array_nurbs(knot_vector=knots[1],
degree=2,
resolution=100)
resol = np.linspace(0, 1, 100)
ax_bu.plot(resol, N_spline_u)
ax_bu.spines["top"].set_visible(False)
ax_bu.spines["right"].set_visible(False)
ax_bu.set_xlim(0, 1)
ax_bu.set_ylim(0, 1)
ax_bv.plot(N_spline_v, resol)
ax_bv.spines["top"].set_visible(False)
ax_bv.spines["right"].set_visible(False)
ax_bv.set_yticks(knots[2:-2])
ax_bv.set_xlim(0, 1)
ax_bv.set_ylim(0, 1)
ax_bu.set_xlabel("$u$")
ax_bv.set_ylabel("$v$")
ax_bv.set_xlabel("$B(v)$")
ax_bu.set_ylabel("$B(u)$")
ax_bv.set_yticks(knots[1][2:-2])
ax_bu.set_xticks(knots[0][2:-2])
#for ax in ax_u, ax_v, ax2, no, ax_bu, ax_bv:
# ax.label_outer()
fig2.show()
degree_u = len(np.where(knots[0] == 0.)[0]) - 1
degree_v = len(np.where(knots[1] == 0.)[0]) - 1
n_xi = len(knots[0]) - degree_u - 3
n_eta = len(knots[1]) - degree_v - 3
from pygeoiga.analysis.common import IEN_element_topology, transform_matrix_B
IEN = IEN_element_topology(n_xi, n_eta, degree_u)
P, W = transform_matrix_B(B)
fig3, ax = plt.subplots(constrained_layout=True)
for i in range(0, n_xi, 2):
pos = IEN[i::n_xi]
for e in pos[::2]:
# cont = np.hstack([IEN[0][:degree_u+1], IEN[0][degree_u+3], np.flip(IEN[0][-degree_u-1:]), IEN[0][degree_u+1], IEN[0][0]])
cont = np.hstack([
e[:degree_u + 1], e[degree_u + 3],
np.flip(e[-degree_u - 1:]), e[degree_u + 1], e[0]
])
ax.plot(P[cont][:, 0],
P[cont][:, 1],
linestyle="-",
color="black",
marker=None)
ax = p_cpoints(B, ax=ax, dim=2, point=True, line=False, color="red")
ax.spines["right"].set_visible(False)
ax.spines["top"].set_visible(False)
ax.set_xlabel("$x$")
ax.set_ylabel("$y$")
ax.set_aspect(0.8)
fig3.tight_layout(pad=0, h_pad=0, w_pad=0)
fig.show()
fig2.show()
fig3.show()
fig_0, ax = plt.subplots(constrained_layout=True)
ax = p_knots(knots, B, ax=ax, dim=2, point=False, line=True, color="k")
ax = p_surface(knots,
B,
ax=ax,
dim=2,
fill=True,
border=False,
color="gray",
alpha=0.5)
ax.spines["right"].set_visible(False)
ax.spines["top"].set_visible(False)
ax.set_xlabel("$x$")
ax.set_ylabel("$y$")
ax.set_aspect(0.8)
fig_0.tight_layout(pad=0, h_pad=0, w_pad=0)
fig_0.show()
save = False
if save or save_all:
fig.savefig(fig_folder + "bezier_extraction.pdf", **kwargs_savefig)
fig_0.savefig(fig_folder + "curve_original.pdf", **kwargs_savefig)
fig2.savefig(fig_folder + "control_original.pdf", **kwargs_savefig)
fig3.savefig(fig_folder + "control_bezier.pdf", **kwargs_savefig)
def plot(B, knots, file_name):
from pygeoiga.plot.nrbplotting_mpl import create_figure, p_cpoints, p_knots, p_curve, p_surface
fig, ax = plt.subplots(constrained_layout=True)
ax = p_knots(knots, B, ax=ax, dim=2, point=False, line=True, color="k")
ax = p_cpoints(B, ax=ax, dim=2, point=True, line=True, color="red")
ax.spines["right"].set_visible(False)
ax.spines["top"].set_visible(False)
ax.set_xlabel("$x$")
ax.set_ylabel("$y$")
ax.set_aspect(0.8)
fig.tight_layout(pad=0, h_pad=0, w_pad=0)
fig.show()
from pygeoiga.engine.NURB_engine import basis_function_array_nurbs
fig2 = plt.figure(constrained_layout=True)
gs = fig2.add_gridspec(2,
2,
hspace=0,
wspace=0,
width_ratios=[0.2, 1],
height_ratios=[1, 0.2])
(ax_v, ax2), (no, ax_u) = gs.subplots(sharex=True, sharey=True)
no.remove()
N_spline_u, _ = basis_function_array_nurbs(knot_vector=knots[0],
degree=2,
resolution=100)
N_spline_v, _ = basis_function_array_nurbs(knot_vector=knots[1],
degree=2,
resolution=100)
resol = np.linspace(0, 1, 100)
ax_u.plot(resol, N_spline_u)
ax_u.spines["top"].set_visible(False)
ax_u.spines["right"].set_visible(False)
ax_u.set_xlim(0, 1)
ax_u.set_ylim(0, 1)
ax_v.plot(N_spline_v, resol)
ax_v.spines["top"].set_visible(False)
ax_v.spines["right"].set_visible(False)
ax_v.set_yticks(knots[2:-2])
ax_v.set_xlim(1, 0)
ax_v.set_ylim(0, 1)
for i in knots[0]:
ax2.vlines(i, 0, 1, 'k')
for j in knots[1]:
ax2.hlines(j, 0, 1, 'k')
ax2.set_xlim(0, 1)
ax2.set_ylim(0, 1)
ax2.set_axis_off()
ax_u.set_xlabel("$u$")
ax_v.set_ylabel("$v$")
ax_v.set_yticks(knots[1][2:-2])
ax_u.set_xticks(knots[0][2:-2])
for ax in ax_u, ax_v, ax2, no:
ax.label_outer()
fig2.show()
save = False
if save or save_all:
fig2.savefig(fig_folder + file_name, **kwargs_savefig)
