Remeshing

import math
from pathlib import Path

from compas.geometry import scale_vector
from compas.geometry import Vector
from compas.geometry import Rotation
from compas.geometry import Translation
from compas.geometry import Scale
from compas.datastructures import Mesh
from compas_cgal.meshing import mesh_remesh
from compas_view2.app import App

FILE = Path(__file__).parent.parent.parent / "data" / "Bunny.ply"

# ==============================================================================
# Get the bunny and construct a mesh
# ==============================================================================

bunny = Mesh.from_ply(FILE)

bunny.remove_unused_vertices()

# ==============================================================================
# Move the bunny to the origin and rotate it upright.
# ==============================================================================

vector = scale_vector(bunny.centroid(), -1)

T = Translation.from_vector(vector)
S = Scale.from_factors([100, 100, 100])
R = Rotation.from_axis_and_angle(Vector(1, 0, 0), math.radians(90))

bunny.transform(R * S * T)

# ==============================================================================
# Remesh
# ==============================================================================

V, F = mesh_remesh(bunny.to_vertices_and_faces(), 0.3, 10)

mesh = Mesh.from_vertices_and_faces(V, F)

# ==============================================================================
# Visualize
# ==============================================================================

viewer = App(width=1600, height=900)
viewer.view.camera.position = [0, -25, 10]
viewer.view.camera.look_at([0, 0, 0])

viewer.add(bunny.transformed(Translation.from_vector([-10, 0, 0])))
viewer.add(mesh.transformed(Translation.from_vector([+10, 0, 0])))
viewer.run()