fl_bench_file = parse_feat(file_yml)
fl_bench = igl.read_dmat(fl_bench_file)
v_bench, f_bench = igl.read_triangle_mesh(file_bench)
v_ini, f_ini = igl.read_triangle_mesh("bench.mesh__sf.obj")
prob_mat_ini, fl_ini_temp = pbc.project_face_labels(v_bench,
f_bench.astype('int32'),
fl_bench.astype('int32'),
v_ini,
f_ini.astype('int32'))
fl_ini = pbc.refine_labels(v_ini, f_ini.astype('int32'), prob_mat_ini,
fl_ini_temp.astype('int32'), 1)
# mp.plot(v_ini, f_ini, fl_ini_temp[:,0])
# mp.plot(v_ini, f_ini, fl_ini[:,0])
eps = 0.1
# v_dict, f_dict =separate_surfaces(v_bench, f_bench, fl_bench)
v_dict, f_dict = separate_surfaces(v_ini, f_ini, fl_ini[:, 0])
v_bad, f_bad, fl_bad = perturb_and_union(v_dict, f_dict, eps)
# mp.plot(v_bad, f_bad, fl_bad[:,0], shading={"wireframe":True})
eps_file_name = file_root + "/" + str(eps) + "pertb.obj"
igl.write_obj(eps_file_name, v_bad, f_bad)
v_good, f_good = igl.read_triangle_mesh(file_root + "/" + "out.mesh__sf.obj")
print("py0")
print("called")
prob_mat, fl_good_proj = pbc.project_face_labels(v_bad, f_bad.astype('int32'),
fl_bad[:, 0].astype('int32'),
v_good,
f_good.astype('int32'))
print("first")
# prob_mat, fl_good_proj = pbc.project_face_labels(v_bad, f_bad.astype('int32'), fl_bad[:,0].astype('int32'), v_good, f_good.astype('int32'))
print("second")
# igl.write_dmat(file_root+"/"+"feat_cut.dmat",fl_good_proj)
import igl
import solver
import constraint
import transform
import open3d as o3d
import mesh as m
cons = constraint.Constraint()
cons.add_constraint(0, [0, 0, 0])
# slvr = solver.Sovler()
if __name__ == "__main__":
V, F = igl.read_triangle_mesh("cube.obj")
mesh = m.Mesh(V, F)
slvr = solver.Sovler(mesh, cons)
slvr.precompute()
V, F = slvr.solve()
igl.write_obj("cube_remake", V, F)
filename = opt.mesh
# load mesh
V, _, _, F, _, _ = igl.read_obj(filename)
# init optim context
ctx = Context()
# normalize mesh
V = normalize(V)
U = np.array(V)
# set a constrained point
ctx.set_constrain(V, F)
ctx.set_parameters(V, F)
ctx.set_lambda(opt.plambda)
# optim loop
maxIter = 1000
stopRelativeDeltaV = 1e-3
start = timeit.default_timer()
for iter in range(0, maxIter):
ctx.optim_step(V, U)
print("Iter at", iter, "Energy", ctx.energy, "RelativeDeltaV",
ctx.relativeDeltaV)
if ctx.relativeDeltaV < stopRelativeDeltaV:
break
stop = timeit.default_timer()
print('Time: ', stop - start)
output_name = os.path.splitext(filename)
tmp = "_cubic_{:.4}".format(opt.plambda)
output_filename = tmp.join(output_name)
normalized_filename = "_norm".join(output_name)
igl.write_obj(normalized_filename, V, F)
igl.write_obj(output_filename, U, F)
def rotate_ribbon(omega, skipped_frames, dt):
with open(input_json) as f:
input_data = json.load(f)
handles = [0, 3] # handle vertices
rest_mesh_path = file_prefix + input_data['rest_mesh']
rest_pos, _, _, faces, _, _ = igl.read_obj(rest_mesh_path)
cur_vel = np.zeros(rest_pos.shape)
np.savetxt(file_prefix + input_data['current_velocity'], cur_vel)
# save rest mesh
cur_pos = rest_pos
mesh_path = output_folder + '/mesh/mesh_0.obj'
igl.write_obj(mesh_path, rest_pos, faces)
#save init vel
vel_path = output_folder + '/velocity/vel_0.txt'
np.savetxt(vel_path, cur_vel)
kp = 0.1
kd = 2 * math.sqrt(kp)
fmin = -0.01
fmax = 0.01
for i in range(250):
cur_time = i * dt * skipped_frames
print('iter: ', i)
theta = omega * cur_time
ref_theta = omega * (i * dt * skipped_frames + dt)
# generate force file
clampedDOFs = np.zeros((len(handles), 4))
for j in range(len(handles)):
vid = handles[j]
r = np.linalg.norm(rest_pos[vid])
clampedDOFs[j][0] = vid
clampedDOFs[j][2] = r * math.sin(ref_theta)
clampedDOFs[j][3] = r * math.cos(ref_theta)
print('clamped dofs on vertex:', vid, clampedDOFs[j])
save_clamped_dofs(file_prefix + input_data['clamped_DOFs'], clampedDOFs)
cur_data = input_data
cur_data['cur_mesh'] = '/ribbon_dynamic/mesh/mesh_' + str(i) + '.obj'
cur_data['curedge_DOFs'] = '/ribbon_dynamic/mesh/edgedofs_' + str(i) + 'txt'
cur_data['current_velocity'] = '/ribbon_dynamic/velocity/vel_' + str(i) + '.txt'
cur_data['clamped_DOFs'] = '/ribbon_dynamic/mesh/clampedDOFs_' + str(i) + '.txt'
#save clamped dofs
save_clamped_dofs(file_prefix + cur_data['clamped_DOFs'], clampedDOFs)
with open(cur_json, 'w') as json_file:
json.dump(cur_data, json_file, indent = 4, sort_keys=True)
args = [exe_path, '--input', cur_json, '--output', file_prefix, '--numSteps', str(4), '--timeStep', str(0.005)]
subprocess.check_call(args)
# save files
cur_pos, _, _, faces, _, _ = igl.read_obj(file_prefix + 'mesh_simulated.obj')
mesh_path = output_folder + '/mesh/mesh_' + str(i+1) + '.obj'
igl.write_obj(mesh_path, cur_pos, faces)
#save vel
cur_vel = np.loadtxt(file_prefix + 'vel_simulated.txt')
vel_path = output_folder + '/velocity/vel_' + str(i+1) + '.txt'
np.savetxt(vel_path, cur_vel)
#save edge dofs
cur_edgedofs = np.loadtxt(file_prefix + 'edgedofs_simulated.txt')
edge_path = output_folder + '/mesh/edgedofs_' + str(i+1) + 'txt'
np.savetxt(edge_path, cur_edgedofs)
def test_write_obj(self):
suc = igl.write_obj("test.obj", self.v, self.f)
self.assertTrue(suc)
self.assertTrue(os.path.isfile("test.obj"))
def main():
try:
V, F, _, _ = mio.read_obj('nonexistent_file.obj')
except FileNotFoundError:
print('Successfully failed when nonexistent file is given')
print('v only')
V, F, VT, FT, VN, FN = mio.read_obj('resource/v.obj')
print(V.shape)
print(V)
print(F.shape)
print(F)
print(VT.shape)
print(VT)
print(FT.shape)
print(FT)
print(VN.shape)
print(VN)
print(FN.shape)
print(FN)
print('v+vt')
V, F, VT, FT, VN, FN = mio.read_obj('resource/v_vt.obj')
print(V.shape)
print(V)
print(F.shape)
print(F)
print(VT.shape)
print(VT)
print(FT.shape)
print(FT)
print(VN.shape)
print(VN)
print(FN.shape)
print(FN)
print('v+vn')
V, F, VT, FT, VN, FN = mio.read_obj('resource/v_vn.obj')
print(V.shape)
print(V)
print(F.shape)
print(F)
print(VT.shape)
print(VT)
print(FT.shape)
print(FT)
print(VN.shape)
print(VN)
print(FN.shape)
print(FN)
print('v+vt+vn')
V, F, VT, FT, VN, FN = mio.read_obj('resource/v_vt_vn.obj')
print(V.shape)
print(V)
print(F.shape)
print(F)
print(VT.shape)
print(VT)
print(FT.shape)
print(FT)
print(VN.shape)
print(VN)
print(FN.shape)
print(FN)
print('wow_tex.obj with texture')
mio.write_obj('wow_tex.obj', V, F, VT, FT, VN, FN, 'wow_tex.jpg')
if IGL_FOUND:
# On Ryzen 7 3950x
# cython: 9.520554542541504 ms
# igl(C++): 21.706414222717285 ms
print('benchmark-read')
start = time.time()
for i in range(10):
mio.read_obj('resource/v_vt_vn.obj')
end = time.time()
print('cython: {} ms'.format((end - start) * 100))
start = time.time()
for i in range(10):
igl.read_obj('resource/v_vt_vn.obj')
end = time.time()
print('igl: {} ms'.format((end - start) * 100))
# On Ryzen 7 3950x
# cython: 8.391046524047852 ms
# igl(C++): 10.899710655212402 ms
print('benchmark-write')
start = time.time()
for i in range(10):
mio.write_obj('resource/buffer.obj', V, F)
end = time.time()
print('cython: {} ms'.format((end - start) * 100))
start = time.time()
for i in range(10):
igl.write_obj('resource/buffer.obj', V, F)
end = time.time()
print('igl: {} ms'.format((end - start) * 100))
def save(self, fp):
igl.write_obj(fp, self.V, self.F)