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Example: Triangular Mesh Geometry

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Jon Drobny edited this page Dec 1, 2021 · 9 revisions

Triangular Meshes for Homogeneous Composition, Complex Objects

Using parry3d, RustBCA has an experimental feature to use full 3D triangular meshes. These are currently limited to homogeneous, single-mesh targets, but compound objects and inhomogeneity are planned features for triangular meshes.

To use this feature, run one of the examples below:

  • cargo run --release --features parry3d TRIMESH examples/tungsten_twist_trimesh.toml
  • cargo run --release --features parry3d TRIMESH examples/tungsten_tiles.toml

These examples can be plotted using rustbca.py (requires toml, shapely, mayavi, numpy, matplotlib):

from scripts.rustbca import *
do_trajectory_plot_3d('tungsten_twist_', input_file='examples/tungsten_twist_trimesh.toml')

Helium trajectories on a twisted and extruded tungsten shape

Hydrogen trajectories on castellated, ITER-like tungsten tiles in 3D

Notes

Note that in order for meshes to work properly in RustBCA, the following must be true:

  • meshes must consist of only triangles
  • meshes must be "watertight"
  • surface normals must point outwards

Watertightness and other mesh properties can be tested with the trimesh library on PyPi.

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