80 lines
2.6 KiB
Python
80 lines
2.6 KiB
Python
"""
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This example demonstrates creation of a new DNA from an existing one by extracting specific lods.
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IMPORTANT: You have to setup the environment before running this example. Please refer to the 'Environment setup' section in README.md.
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- usage in command line:
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python dnacalib_lod_demo.py
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mayapy dnacalib_lod_demo.py
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- usage in Maya:
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1. copy whole content of this file to Maya Script Editor
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2. change value of ROOT_DIR to absolute path of dna_calibration, e.g. `c:/dna_calibration` in Windows or `/home/user/dna_calibration`. Important:
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Use `/` (forward slash), because Maya uses forward slashes in path.
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- customization:
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- change CHARACTER_NAME to Taro, or the name of a custom DNA file placed in /data/dna_files
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- change value of LODS to list of lods needed to be extracted
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Expected: Script will generate Ada_with_lods_1_and_3.dna in OUTPUT_DIR, from original Ada.dna.
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NOTE: If OUTPUT_DIR does not exist, it will be created.
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"""
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from os import makedirs
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from os import path as ospath
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# if you use Maya, use absolute path
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ROOT_DIR = f"{ospath.dirname(ospath.abspath(__file__))}/..".replace("\\", "/")
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OUTPUT_DIR = f"{ROOT_DIR}/output"
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import dnacalib as dnacalib
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import dna
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# Sets DNA file path
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DNA = f"{ROOT_DIR}/data/dna_files/Ada.dna"
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# Sets new DNA output file path
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DNA_NEW = f"{OUTPUT_DIR}/Ada_with_lods_1_and_3.dna"
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# Sets lods to extract
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LODS = [1, 3]
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def save_dna(reader: dnacalib.DNACalibDNAReader, created_dna_path: str):
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# Saves the dna
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stream = dna.FileStream(created_dna_path, dna.FileStream.AccessMode_Write, dna.FileStream.OpenMode_Binary)
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writer = dna.BinaryStreamWriter(stream)
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writer.setFrom(reader)
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writer.write()
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def run_SetLODsCommand(reader):
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calibrated = dnacalib.DNACalibDNAReader(reader)
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command = dnacalib.SetLODsCommand()
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# Set a list of LODs that will be exported to the new file
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command.setLODs(LODS)
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# Runs the command that reduces LODs of the DNA
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command.run(calibrated)
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print("Setting new LODs...")
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if calibrated.getLODCount() != 2:
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raise RuntimeError("Setting new number of LODs in DNA was unsuccessful!")
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print("\nSuccessfully changed number of LODs in DNA.")
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print("Saving DNA...")
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# Save the newly created DNA
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save_dna(calibrated, DNA_NEW)
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print("Done.")
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def load_dna_calib(dna_path: str):
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# Load the DNA
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stream = dna.FileStream(dna_path, dna.FileStream.AccessMode_Read, dna.FileStream.OpenMode_Binary)
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reader = dna.BinaryStreamReader(stream, dna.DataLayer_All)
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reader.read()
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return reader
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if __name__ == "__main__":
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makedirs(OUTPUT_DIR, exist_ok=True)
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reader = load_dna_calib(DNA)
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run_SetLODsCommand(reader)
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