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coacd
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coacd
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#!/usr/bin/env python3
try:
import trimesh
except ModuleNotFoundError:
print("trimesh is required. Please install with `pip install trimesh`")
exit(1)
import numpy as np
import sys
import os
import argparse
import coacd
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument(
"-i",
"--input",
type=str,
required=True,
help="input model loaded by trimesh. Supported formats: glb, gltf, obj, off, ply, stl, etc.",
)
parser.add_argument(
"-o",
"--output",
type=str,
required=True,
help="output model exported by trimesh. Supported formats: glb, gltf, obj, off, ply, stl, etc.",
)
parser.add_argument("--quiet", action="store_true", help="do not print logs")
parser.add_argument(
"-t",
"--threshold",
type=float,
default=0.05,
help="termination criteria in [0.01, 1] (0.01: most fine-grained; 1: most coarse)",
)
parser.add_argument(
"-pm",
"--preprocess-mode",
type=str,
default="auto",
help="No remeshing before running CoACD. Only suitable for manifold input.",
)
parser.add_argument(
"-r",
"--resolution",
type=int,
default=2000,
help="surface samping resolution for Hausdorff distance computation",
)
parser.add_argument(
"-nm",
"--no-merge",
action="store_true",
help="If merge is enabled, try to reduce total number of parts by merging.",
)
parser.add_argument(
"-c",
"--max-convex-hull",
type=int,
default=-1,
help="max # convex hulls in the result, -1 for no limit, works only when merge is enabled",
)
parser.add_argument(
"-mi",
"--mcts_iteration",
type=int,
default=150,
help="Number of MCTS iterations.",
)
parser.add_argument(
"-md",
"--mcts-max-depth",
type=int,
default=3,
help="Maximum depth for MCTS search.",
)
parser.add_argument(
"-mn",
"--mcts-node",
type=int,
default=20,
help="Number of cut candidates for MCTS.",
)
parser.add_argument(
"-pr",
"--prep-resolution",
type=int,
default=50,
help="Preprocessing resolution.",
)
parser.add_argument(
"--pca",
action="store_true",
help="Use PCA to align input mesh. Suitable for non-axis-aligned mesh.",
)
parser.add_argument("--seed", type=int, default=0, help="Random seed.")
args = parser.parse_args()
input_file = args.input
output_file = args.output
if not os.path.isfile(input_file):
print(input_file, "is not a file")
exit(1)
if args.quiet:
coacd.set_log_level("error")
mesh = trimesh.load(input_file, force="mesh")
mesh = coacd.Mesh(mesh.vertices, mesh.faces)
result = coacd.run_coacd(
mesh,
threshold=args.threshold,
max_convex_hull=args.max_convex_hull,
preprocess_mode=args.preprocess_mode,
preprocess_resolution=args.prep_resolution,
resolution=args.resolution,
mcts_nodes=args.mcts_node,
mcts_iterations=args.mcts_iteration,
mcts_max_depth=args.mcts_max_depth,
pca=args.pca,
merge=not args.no_merge,
seed=args.seed,
)
mesh_parts = []
for vs, fs in result:
mesh_parts.append(trimesh.Trimesh(vs, fs))
scene = trimesh.Scene()
np.random.seed(0)
for p in mesh_parts:
p.visual.vertex_colors[:, :3] = (np.random.rand(3) * 255).astype(np.uint8)
scene.add_geometry(p)
scene.export(output_file)