Code:

import numpy as npimport osimport sys# load 5.1def pad_last(list_of_arrays):forlast = list_of_arrays[-2]last = np.zeros_like(forlast)last[:len(list_of_arrays[-1])] = list_of_arrays[-1]list_of_arrays[-1] = lastreturn list_of_arraysfilename = sys.argv[1]outname = "converted".join(os.path.splitext(filename))with open(filename, 'r') as f:points = []offsets = []connectivity = []meta = []reading_section = "meta"for l in f.readlines():if "POINTS" in l:reading_section = "points"n_points = int(l.split(" ")[1])continueelif "OFFSET" in l:reading_section = "offsets"continueelif "CONNECTIVITY" in l:reading_section = "connec"continueelif "META" in l or l == "\n":reading_section = "meta"if reading_section == "meta":meta.append(l)if reading_section == "points":points.append(np.array([float(x) for x in l.split(" ") if x not in ["\n", ""]]))if reading_section == "offsets":offsets.append(np.array([int(x) for x in l.split(" ") if x not in ["\n", ""]]))if reading_section == "connec":connectivity.append(np.array([int(x) for x in l.split(" ") if x not in ["\n", ""]], dtype=np.int64))points = pad_last(points)offsets = pad_last(offsets)connectivity = pad_last(connectivity)points = np.stack(points)offsets = np.stack(offsets)connectivity = np.stack(connectivity)print(points.shape)print(offsets.shape)print(connectivity.shape)# convert to 2.0 formatpoints = points.reshape(-1, 3)[:n_points]offsets = offsets.reshape(-1)offset = offsets[1] - offsets[0]cells = connectivity.reshape(-1, offset)cells_with_offset = np.zeros((cells.shape[0], offset+1))print(cells_with_offset.shape)cells_with_offset[:, 1:] = cellscells_with_offset[:, 0] = offset# write 2.0with open(outname, 'w') as f:f.write("# vtk DataFile Version 2.0\ncustom vtk output\nASCII\nDATASET UNSTRUCTURED_GRID\n")# write pointsf.write("POINTS {} double\n".format(n_points))for p in points:f.write(" ".join([str(x) for x in p])+"\n")f.write("\n")f.write("CELLS {} {}\n".format(cells_with_offset.shape[0], cells_with_offset.shape[0] * cells_with_offset.shape[1]))for c in cells_with_offset:f.write(" ".join([str(int(x)) for x in c]) + "\n")f.write("\n")f.write("CELL_TYPES {}\n".format(cells_with_offset.shape[0]))f.writelines(["10\n"]*cells_with_offset.shape[0])

Code:

p.connect(p.GUI)p.resetSimulation(p.RESET_USE_DEFORMABLE_WORLD)p.loadSoftBody(    "res/cube1.vtk", basePosition=[0,0,0.01 ], baseOrientation=p.getQuaternionFromEuler([0,0,0]), scale=1, mass=0.1)while True:    p.stepSimulation()

Code:

malloc(): invalid size (unsorted)