| from model.rotation2xyz import Rotation2xyz |
| import numpy as np |
| from trimesh import Trimesh |
| import os |
| import torch |
| from visualize.simplify_loc2rot import joints2smpl |
|
|
| class npy2obj: |
| def __init__(self, npy_path, sample_idx, rep_idx, device=0, cuda=True): |
| self.npy_path = npy_path |
| self.motions = np.load(self.npy_path, allow_pickle=True) |
| if self.npy_path.endswith('.npz'): |
| self.motions = self.motions['arr_0'] |
| self.motions = self.motions[None][0] |
| self.rot2xyz = Rotation2xyz(device='cpu') |
| self.faces = self.rot2xyz.smpl_model.faces |
| self.bs, self.njoints, self.nfeats, self.nframes = self.motions['motion'].shape |
| self.opt_cache = {} |
| self.sample_idx = sample_idx |
| self.total_num_samples = self.motions['num_samples'] |
| self.rep_idx = rep_idx |
| self.absl_idx = self.rep_idx*self.total_num_samples + self.sample_idx |
| self.num_frames = self.motions['motion'][self.absl_idx].shape[-1] |
| self.j2s = joints2smpl(num_frames=self.num_frames, device_id=device, cuda=cuda) |
|
|
| if self.nfeats == 3: |
| print(f'Running SMPLify For sample [{sample_idx}], repetition [{rep_idx}], it may take a few minutes.') |
| motion_tensor, opt_dict = self.j2s.joint2smpl(self.motions['motion'][self.absl_idx].transpose(2, 0, 1)) |
| self.motions['motion'] = motion_tensor.cpu().numpy() |
| elif self.nfeats == 6: |
| self.motions['motion'] = self.motions['motion'][[self.absl_idx]] |
| self.bs, self.njoints, self.nfeats, self.nframes = self.motions['motion'].shape |
| self.real_num_frames = self.motions['lengths'][self.absl_idx] |
|
|
| self.vertices = self.rot2xyz(torch.tensor(self.motions['motion']), mask=None, |
| pose_rep='rot6d', translation=True, glob=True, |
| jointstype='vertices', |
| |
| vertstrans=True) |
| self.root_loc = self.motions['motion'][:, -1, :3, :].reshape(1, 1, 3, -1) |
| self.vertices += self.root_loc |
|
|
| def get_vertices(self, sample_i, frame_i): |
| return self.vertices[sample_i, :, :, frame_i].squeeze().tolist() |
|
|
| def get_trimesh(self, sample_i, frame_i): |
| return Trimesh(vertices=self.get_vertices(sample_i, frame_i), |
| faces=self.faces) |
|
|
| def save_obj(self, save_path, frame_i): |
| mesh = self.get_trimesh(0, frame_i) |
| with open(save_path, 'w') as fw: |
| mesh.export(fw, 'obj') |
| return save_path |
| |
| def save_npy(self, save_path): |
| data_dict = { |
| 'motion': self.motions['motion'][0, :, :, :self.real_num_frames], |
| 'thetas': self.motions['motion'][0, :-1, :, :self.real_num_frames], |
| 'root_translation': self.motions['motion'][0, -1, :3, :self.real_num_frames], |
| 'faces': self.faces, |
| 'vertices': self.vertices[0, :, :, :self.real_num_frames], |
| 'text': self.motions['text'][0], |
| 'length': self.real_num_frames, |
| } |
| np.save(save_path, data_dict) |
|
|
