sample-model-viewer.py

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import pinocchio as pin
from pinocchio.visualize import MeshcatVisualizer, GepettoVisualizer
from sys import argv
from numpy import pi

try:
    # Python 2
    input = raw_input  # noqa
except NameError:
    pass

# GepettoVisualizer: -g
# MeshcatVisualizer: -m
VISUALIZER = None
if len(argv)>1:
    opt = argv[1]
    if opt == '-g':
        VISUALIZER = GepettoVisualizer
    elif opt == '-m':
        VISUALIZER = MeshcatVisualizer
    else:
        raise ValueError("Unrecognized option: " + opt)

model = pin.buildSampleModelHumanoid()
visual_model = pin.buildSampleGeometryModelHumanoid(model)
collision_model = visual_model.copy()

q0 = pin.neutral(model)

if VISUALIZER:
    viz = VISUALIZER(model, collision_model, visual_model)
    viz.initViewer()
    viz.loadViewerModel()
    viz.display(q0)

    input("Enter to check a new configuration")

    q = q0.copy()
    q[8] = pi/2
    q[14] = pi/2
    q[23] = -pi/2
    q[29] = pi/2

    viz.display(q)