| from textwrap import wrap |
| from typing import Optional |
|
|
| import numpy as np |
|
|
| import matplotlib.pyplot as plt |
| import mpl_toolkits.mplot3d.axes3d as p3 |
| from matplotlib.animation import FuncAnimation |
| from mpl_toolkits.mplot3d.art3d import Poly3DCollection |
|
|
| import mld.data.humanml.utils.paramUtil as paramUtil |
|
|
| skeleton = paramUtil.t2m_kinematic_chain |
|
|
|
|
| def plot_3d_motion(save_path: str, joints: np.ndarray, title: str, |
| figsize: tuple[int, int] = (3, 3), |
| fps: int = 120, radius: int = 3, kinematic_tree: list = skeleton, |
| hint: Optional[np.ndarray] = None) -> None: |
|
|
| title = '\n'.join(wrap(title, 20)) |
|
|
| def init(): |
| ax.set_xlim3d([-radius / 2, radius / 2]) |
| ax.set_ylim3d([0, radius]) |
| ax.set_zlim3d([-radius / 3., radius * 2 / 3.]) |
| fig.suptitle(title, fontsize=10) |
| ax.grid(b=False) |
|
|
| def plot_xzPlane(minx, maxx, miny, minz, maxz): |
| |
| verts = [ |
| [minx, miny, minz], |
| [minx, miny, maxz], |
| [maxx, miny, maxz], |
| [maxx, miny, minz] |
| ] |
| xz_plane = Poly3DCollection([verts]) |
| xz_plane.set_facecolor((0.5, 0.5, 0.5, 0.5)) |
| ax.add_collection3d(xz_plane) |
|
|
| |
| data = joints.copy().reshape(len(joints), -1, 3) |
|
|
| data *= 1.3 |
| if hint is not None: |
| mask = hint.sum(-1) != 0 |
| hint = hint[mask] |
| hint *= 1.3 |
|
|
| fig = plt.figure(figsize=figsize) |
| plt.tight_layout() |
| ax = p3.Axes3D(fig) |
| init() |
| MINS = data.min(axis=0).min(axis=0) |
| MAXS = data.max(axis=0).max(axis=0) |
| colors = ["#DD5A37", "#D69E00", "#B75A39", "#DD5A37", "#D69E00", |
| "#FF6D00", "#FF6D00", "#FF6D00", "#FF6D00", "#FF6D00", |
| "#DDB50E", "#DDB50E", "#DDB50E", "#DDB50E", "#DDB50E", ] |
|
|
| frame_number = data.shape[0] |
|
|
| height_offset = MINS[1] |
| data[:, :, 1] -= height_offset |
| if hint is not None: |
| hint[..., 1] -= height_offset |
| trajec = data[:, 0, [0, 2]] |
|
|
| data[..., 0] -= data[:, 0:1, 0] |
| data[..., 2] -= data[:, 0:1, 2] |
|
|
| def update(index): |
| while ax.lines: ax.lines[0].remove() |
| while ax.collections: ax.collections[0].remove() |
| ax.view_init(elev=120, azim=-90) |
| ax.dist = 7.5 |
| plot_xzPlane(MINS[0] - trajec[index, 0], MAXS[0] - trajec[index, 0], 0, MINS[2] - trajec[index, 1], |
| MAXS[2] - trajec[index, 1]) |
|
|
| if hint is not None: |
| ax.scatter(hint[..., 0] - trajec[index, 0], hint[..., 1], hint[..., 2] - trajec[index, 1], color="#80B79A") |
|
|
| for i, (chain, color) in enumerate(zip(kinematic_tree, colors)): |
| if i < 5: |
| linewidth = 4.0 |
| else: |
| linewidth = 2.0 |
| ax.plot3D(data[index, chain, 0], data[index, chain, 1], data[index, chain, 2], linewidth=linewidth, |
| color=color) |
|
|
| plt.axis('off') |
| ax.set_xticklabels([]) |
| ax.set_yticklabels([]) |
| ax.set_zticklabels([]) |
|
|
| ani = FuncAnimation(fig, update, frames=frame_number, interval=1000 / fps, repeat=False) |
| ani.save(save_path, fps=fps) |
| plt.close() |
|
|
