'''
Provide me with a python function that can reduce the number of polygons in a 3D asset by 50%
'''

import pymesh

def reduce_polygons(mesh):
    target_num_faces = len(mesh.faces) // 2
    decimator = pymesh.QuadricEdgeCollapseDecimator(mesh)
    decimated_mesh = decimator.collapse(target_num_faces)
    return decimated_mesh

	
import pymesh

# Load the input mesh
input_mesh = pymesh.load_mesh("input.obj")

# Reduce the number of polygons by 50%
output_mesh = reduce_polygons(input_mesh)

# Save the output mesh
pymesh.save_mesh("output.obj", output_mesh)