45 lines
1.5 KiB
Python
45 lines
1.5 KiB
Python
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import open3d as o3d
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import os
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def load_ply(file_path):
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"""Carrega um arquivo PLY usando open3d."""
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mesh = o3d.io.read_triangle_mesh(file_path)
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return mesh
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def simplify_mesh(mesh, reduction_factor=0.5):
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"""Reduz o número de triângulos da malha."""
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target_number_of_triangles = int(len(mesh.triangles) * reduction_factor)
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simplified_mesh = mesh.simplify_quadric_decimation(target_number_of_triangles)
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return simplified_mesh
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def save_obj_with_mtl(mesh, obj_path, mtl_path):
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"""Salva a malha em formato OBJ com MTL."""
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# Salvar o arquivo OBJ
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o3d.io.write_triangle_mesh(obj_path, mesh)
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# Gerar o arquivo MTL
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with open(mtl_path, 'w') as mtl_file:
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mtl_file.write("newmtl material_0\n")
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mtl_file.write("Ka 1.000 1.000 1.000\n")
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mtl_file.write("Kd 0.800 0.800 0.800\n")
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mtl_file.write("Ks 0.000 0.000 0.000\n")
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mtl_file.write("d 1.0\n")
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mtl_file.write("illum 2\n")
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def convert_ply_to_obj(ply_path, obj_path, reduction_factor=0.5):
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"""Converte PLY para OBJ com redução de triângulos e gera arquivo MTL."""
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mesh = load_ply(ply_path)
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simplified_mesh = simplify_mesh(mesh, reduction_factor)
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# Definir o caminho do arquivo MTL
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mtl_path = os.path.splitext(obj_path)[0] + ".mtl"
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# Salvar o OBJ e o MTL
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save_obj_with_mtl(simplified_mesh, obj_path, mtl_path)
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# Caminhos dos arquivos
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ply_file = 'montagem_pulverizador.ply'
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obj_file = 'montagem_pulverizador_0.03.obj'
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# Converter e simplificar
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convert_ply_to_obj(ply_file, obj_file, reduction_factor=0.03)
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