speed up for reading and writing ply files

wu_xinjun

2022-04-02 b7a9cf522716f3236d4077c75d7ed147a67200b4

1
2
“dLzüEYd˜¢
çÿƒTd¸Ýÿ­ÿ^<dœ/þ#+BCþnèd7mÿw5“d•lþþþÆdüjü