Ydd To Obj Info

# Convert single file converter.load_ydd_file('sample.ydd.json') converter.convert_to_obj('output.obj')

def _load_binary_ydd(self, filepath: str) -> None: """Load binary YDD format (example structure)""" with open(filepath, 'rb') as f: # Read header magic = f.read(4).decode('ascii') if magic != 'YDD': raise ValueError("Invalid YDD file signature") version = struct.unpack('I', f.read(4))[0] vertex_count = struct.unpack('I', f.read(4))[0] face_count = struct.unpack('I', f.read(4))[0] # Read vertices (3 floats per vertex) for _ in range(vertex_count): x = struct.unpack('f', f.read(4))[0] y = struct.unpack('f', f.read(4))[0] z = struct.unpack('f', f.read(4))[0] self.vertices.append([x, y, z]) # Read faces (3 integers per face) for _ in range(face_count): v1 = struct.unpack('I', f.read(4))[0] v2 = struct.unpack('I', f.read(4))[0] v3 = struct.unpack('I', f.read(4))[0] self.faces.append([v1, v2, v3]) ydd to obj

def convert_to_obj(self, output_path: str, include_normals: bool = True, include_tex_coords: bool = True) -> None: """Convert loaded YDD data to OBJ format""" with open(output_path, 'w') as f: # Write header f.write("# Converted from YDD to OBJ\n") f.write(f"# Vertices: {len(self.vertices)}\n") f.write(f"# Faces: {len(self.faces)}\n\n") # Write vertices (OBJ uses 1-indexing) for v in self.vertices: f.write(f"v {v[0]} {v[1]} {v[2]}\n") # Write texture coordinates if include_tex_coords and self.tex_coords: f.write("\n# Texture coordinates\n") for vt in self.tex_coords: if len(vt) == 2: f.write(f"vt {vt[0]} {vt[1]}\n") elif len(vt) == 3: f.write(f"vt {vt[0]} {vt[1]} {vt[2]}\n") # Write normals if include_normals and self.normals: f.write("\n# Normals\n") for vn in self.normals: f.write(f"vn {vn[0]} {vn[1]} {vn[2]}\n") # Write faces (convert to 1-indexed OBJ format) f.write("\n# Faces\n") for face in self.faces: if include_tex_coords and include_normals and self.tex_coords and self.normals: # v/vt/vn format f.write(f"f {face[0]+1}/{face[0]+1}/{face[0]+1} " f"{face[1]+1}/{face[1]+1}/{face[1]+1} " f"{face[2]+1}/{face[2]+1}/{face[2]+1}\n") elif include_tex_coords and self.tex_coords: # v/vt format f.write(f"f {face[0]+1}/{face[0]+1} " f"{face[1]+1}/{face[1]+1} " f"{face[2]+1}/{face[2]+1}\n") elif include_normals and self.normals: # v//vn format f.write(f"f {face[0]+1}//{face[0]+1} " f"{face[1]+1}//{face[1]+1} " f"{face[2]+1}//{face[2]+1}\n") else: # v only f.write(f"f {face[0]+1} {face[1]+1} {face[2]+1}\n") # Convert single file converter

import json import struct from typing import List, Dict, Any, Tuple class YDDtoOBJConverter: """ Converter for YDD format to OBJ format Assumes YDD contains vertices, faces, and possibly texture coordinates """ filepath: str) -&gt

converter = YDDtoOBJConverter()

def __init__(self): self.vertices = [] self.normals = [] self.tex_coords = [] self.faces = [] self.materials = [] def parse_ydd(self, ydd_data: Dict[str, Any]) -> None: """ Parse YDD data structure into internal representation Expected YDD structure: { "vertices": [[x, y, z], ...], "faces": [[v1, v2, v3], ...], "normals": [[nx, ny, nz], ...], # optional "tex_coords": [[u, v], ...], # optional "materials": [...] # optional } """ self.vertices = ydd_data.get('vertices', []) self.faces = ydd_data.get('faces', []) self.normals = ydd_data.get('normals', []) self.tex_coords = ydd_data.get('tex_coords', []) self.materials = ydd_data.get('materials', []) def load_ydd_file(self, filepath: str) -> None: """Load YDD from JSON or binary file""" if filepath.endswith('.json'): with open(filepath, 'r') as f: data = json.load(f) self.parse_ydd(data) elif filepath.endswith('.ydd'): # Custom binary format example self._load_binary_ydd(filepath) else: raise ValueError(f"Unsupported YDD file format: {filepath}")