Remeshing

import math
from pathlib import Path

from compas.datastructures import Mesh
from compas.geometry import Rotation
from compas.geometry import Scale
from compas.geometry import Translation
from compas.geometry import Vector
from compas.geometry import scale_vector
from compas_cgal.meshing import mesh_remesh
from compas_viewer import Viewer

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 = Viewer(width=1600, height=900)

viewer.renderer.camera.target = [0, 0, 0]
viewer.renderer.camera.position = [0, -25, 10]

viewer.scene.add(bunny.transformed(Translation.from_vector([-10, 0, 0])), show_points=False)
viewer.scene.add(mesh.transformed(Translation.from_vector([+10, 0, 0])), show_points=False)

viewer.show()