Ply-rs

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Ply-rs 是一个用于读取和写入 PLY 文件格式（也称为多边形文件格式、斯坦福三角形格式）的小型库。该库支持所有三种子格式：ASCII、大端和小端。

它主要关注两点

• 易于快速上手。
• 如果你愿意自己做一些事情，性能很高。

入门

依赖

将以下内容添加到你的 Cargo.toml

[dependencies]
ply-rs = "0.1.3"

添加到你的根目录

extern crate ply_rs;

fn main() {}

读取 PLY 文件

这是读取 PLY 文件的最简单方法

extern crate ply_rs;
use ply_rs as ply;

/// Demonstrates simplest use case for reading from a file.
fn main() {
    // set up a reader, in this case a file.
    let path = "example_plys/greg_turk_example1_ok_ascii.ply";
    let mut f = std::fs::File::open(path).unwrap();

    // create a parser
    let p = ply::parser::Parser::<ply::ply::DefaultElement>::new();

    // use the parser: read the entire file
    let ply = p.read_ply(&mut f);

    // make sure it did work
    assert!(ply.is_ok());
    let ply = ply.unwrap();

    // proof that data has been read
    println!("Ply header: {:#?}", ply.header);
    println!("Ply data: {:?}", ply.payload);
}

写入 PLY 文件

写入 PLY 文件的最简单示例

extern crate ply_rs;
use ply_rs::ply::{ Ply, DefaultElement };
use ply_rs::writer::{ Writer };

/// Demonstrates simplest use case for reading from a file.
fn main() {
    // set up a target, could also be a file
    let mut buf = Vec::<u8>::new();

    // crete a ply objet
    let mut ply = Ply::<DefaultElement>::new();

    // set up a writer
    let w = Writer::new();
    let written = w.write_ply(&mut buf, &mut ply).unwrap();
    println!("{} bytes written", written);
    println!("buffer size: {}", buf.len());

    // proof that data has been read

    // We can use `from_utf8` since PLY files only contain ascii characters
    let output = String::from_utf8(buf).unwrap();
    println!("Written data:\n{}", output);
}

对于更复杂的示例，请参阅 示例。

此实现主要基于 这些规范，并添加了来自 这里 的内容。