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jsonseq_file_to_obj

cjseq2::conv::obj

Function jsonseq_file_to_obj 

Source 
pub fn jsonseq_file_to_obj(
    path: impl AsRef<Path>,
    output_path: impl AsRef<Path>,
) -> Result<()>
Expand description

Convert a CityJSONSeq file to a CityJSON object and then to OBJ

§Arguments

  • path - The path to the CityJSONSeq file
  • output_path - The path to write the OBJ file

§Returns

An IoResult indicating success or failure

Examples found in repository?
examples/obj_convert_seq.rs (line 25)
4fn main() -> std::io::Result<()> {
5    // Path to the sample CityJSONSeq file
6    let file_path = Path::new("data/3dbag_b2.city.jsonl");
7
8    // Ensure the file exists
9    if !file_path.exists() {
10        println!("Sample file not found: {:?}", file_path);
11        println!("Available files in data directory:");
12        for entry in std::fs::read_dir("data")? {
13            let entry = entry?;
14            println!("  {:?}", entry.path());
15        }
16        return Ok(());
17    }
18
19    println!("Converting {} to OBJ format...", file_path.display());
20
21    // Output file path
22    let output_path = "output_seq.obj";
23
24    // Convert to OBJ and save to file
25    obj::jsonseq_file_to_obj(file_path, output_path)?;
26
27    println!("Conversion complete. OBJ file saved to: {}", output_path);
28
29    // Print some stats about the OBJ file
30    let metadata = std::fs::metadata(output_path)?;
31    println!("OBJ file size: {} bytes", metadata.len());
32
33    // Count number of vertices and faces in the OBJ file
34    let obj_contents = std::fs::read_to_string(output_path)?;
35    let vertex_count = obj_contents
36        .lines()
37        .filter(|line| line.starts_with("v "))
38        .count();
39    let face_count = obj_contents
40        .lines()
41        .filter(|line| line.starts_with("f "))
42        .count();
43
44    println!("OBJ statistics:");
45    println!("  Vertices: {}", vertex_count);
46    println!("  Faces: {}", face_count);
47
48    Ok(())
49}