ply2glb.py

import bpy
import sys


# Clear the scene
bpy.ops.object.select_all(action="SELECT")
bpy.ops.object.delete(use_global=False)

# Load mesh.ply
ply_path = sys.argv[-1]
bpy.ops.wm.ply_import(filepath=ply_path)

# Create a new material
material = bpy.data.materials.new(name="New_Material")
material.use_nodes = True

# Assign the material to the object
obj = bpy.context.selected_objects[0]
if obj.data.materials:
    obj.data.materials[0] = material
else:
    obj.data.materials.append(material)

# Add a Vertex Color node and link it
nodes = material.node_tree.nodes
links = material.node_tree.links

# Clear default nodes
for node in nodes:
    nodes.remove(node)

# Create nodes
output_node = nodes.new(type="ShaderNodeOutputMaterial")
vertex_color_node = nodes.new(type="ShaderNodeVertexColor")
principled_bsdf = nodes.new(type="ShaderNodeBsdfPrincipled")

# Set the vertex color layer name
vertex_color_node.layer_name = "Col"

# Arrange nodes
vertex_color_node.location = (-300, 0)
principled_bsdf.location = (0, 0)
output_node.location = (300, 0)

# Link nodes
links.new(vertex_color_node.outputs["Color"], principled_bsdf.inputs["Base Color"])
links.new(principled_bsdf.outputs["BSDF"], output_node.inputs["Surface"])

# Rotate the object
bpy.context.object.rotation_euler[2] = 1.57079

# Export the scene to a glTF file
glb_path = ply_path.replace(".ply", ".glb")
bpy.ops.export_scene.gltf(filepath=glb_path, export_format="GLB")

# Free up memory
bpy.ops.wm.read_factory_settings(use_empty=True)