Rendering

An example of rendering MDAnalysis Trajectories.

Here is an example that uses Canvas to render images and animations of MDAnalysis Universes.

import molecularnodes as mn
import MDAnalysis as mda
from MDAnalysis.tests.datafiles import PSF, DCD

canvas = mn.Canvas()

Add Universe to Blender

u = mda.Universe(PSF, DCD)
t = mn.Trajectory(u).add_style("cartoon")

# add resid 1 and 129 with spheres style
t.add_style('spheres', selection="resid 1 129")
# set the sphere geometry to mesh
t.styles[1].geometry = "mesh"

Add annotations to Universe

# add universe info annotation
t.annotations.add_universe_info()

# add COM distance between resid 1 and 129 annotation
t.annotations.add_com_distance(
    selection1="resid 1", selection2="resid 129", text1="r1", text2="r129"
)

<molecularnodes.annotations.manager.COMDistance_interface at 0x7867b19ab1d0>

Render Image

# frame the trajectory
canvas.frame_object(t)

# render image of scene at frame 75
canvas.snapshot(frame=75)

Render Animation

# render animation of scene from frame 10 to 50 at 50% sccale
canvas.animation(frame_start=10, frame_end=50, render_scale=50)