64 lines
1.5 KiB
Python
64 lines
1.5 KiB
Python
# Copyright (c) 2026 Dominic Masters
|
|
#
|
|
# This software is released under the MIT License.
|
|
# https://opensource.org/licenses/MIT
|
|
|
|
"""
|
|
Writes DMF (Dusk Mesh Format) files.
|
|
|
|
DMF format:
|
|
Bytes 0-3: DMF\x00 (magic)
|
|
Bytes 4-7: uint32_t version = 1 (little-endian)
|
|
Bytes 8-11: uint32_t vertCount (little-endian)
|
|
Bytes 12+: meshvertex_t vertices[vertCount]
|
|
Each vertex is 20 bytes: uv[2] + pos[3] (5 floats, LE)
|
|
|
|
Usage:
|
|
python3 -m tools.asset.dmf <output.dmf> <vertices.bin>
|
|
Reads raw vertex bytes from vertices.bin and writes a DMF file.
|
|
"""
|
|
|
|
import argparse
|
|
import struct
|
|
import os
|
|
|
|
MAGIC = b'DMF\x00'
|
|
VERSION = 1
|
|
VERTEX_SIZE = 20
|
|
|
|
|
|
def write_dmf(path, vertex_bytes):
|
|
if len(vertex_bytes) % VERTEX_SIZE != 0:
|
|
raise ValueError(
|
|
f"Vertex data size {len(vertex_bytes)} is not a "
|
|
f"multiple of {VERTEX_SIZE}"
|
|
)
|
|
vert_count = len(vertex_bytes) // VERTEX_SIZE
|
|
buf = bytearray()
|
|
buf += MAGIC
|
|
buf += struct.pack('<I', VERSION)
|
|
buf += struct.pack('<I', vert_count)
|
|
buf += vertex_bytes
|
|
with open(path, 'wb') as f:
|
|
f.write(buf)
|
|
print(
|
|
f'Wrote {path}: {vert_count} vertices, {len(buf)} bytes'
|
|
)
|
|
return vert_count
|
|
|
|
|
|
def main():
|
|
parser = argparse.ArgumentParser(description="Write a DMF (Dusk Mesh Format) file")
|
|
parser.add_argument('output', help='Path to output .dmf file')
|
|
parser.add_argument('vertices', help='Path to raw vertex bytes file')
|
|
args = parser.parse_args()
|
|
|
|
with open(args.vertices, 'rb') as f:
|
|
vertex_bytes = f.read()
|
|
|
|
write_dmf(args.output, vertex_bytes)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|