教程 4：如何在典型用例中自定义 VRED Core

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Python 代码示例

下面是教程 4：如何在典型用例中自定义 VRED Core 视频随附的示例 Python 脚本。

batch-data-conversion.py

import base64
import subprocess
import os

print("=[VRED Core Tutorial] Batch Data Conversion")

vredCorePath = r'D:\Programme\Autodesk\VREDCore-13.3\bin\WIN64\VREDCore.exe'

sourceExtension = 'vpb'
sourceDirectory = r'C:\VRED_Examples\vpb'

targetExtension = 'fbx'
targetDirectory = r'C:\VRED_Examples\fbx'

# Create target directory if it does not exist
if not os.path.exists(targetDirectory):
    os.makedirs(targetDirectory)

# Iterate over files in source directory and process each filename
for filename in os.listdir(sourceDirectory):
    # ... but only if the file extension matches
    if filename.endswith(sourceExtension): 
        # Extract the file name without the extension
        namePart = filename.split('.')[0]

        print("=[VRED Core Tutorial] Data Conversion: {} from {} to {}".format(namePart, sourceExtension, targetExtension))

        # Create paths for the source and the target file
        # Replace windows backslashes with linux style forward slashes
        sourcePath = os.path.join(sourceDirectory, filename).replace('\\','/')
        targetPath = os.path.join(targetDirectory, '{}.{}'.format(namePart, targetExtension)).replace('\\','/')

        # Start vred and process files
        subprocess.call([vredCorePath, '-prepython=load("{}"); save("{}"); terminateVred()'.format(sourcePath, targetPath)])

print("=[VRED Core Tutorial] Finished Batch Data Conversion...")

batch-data-optimization-runner.py

import os
import base64
import subprocess

vredCorePath = r'D:\Programme\Autodesk\VREDCore-13.3\bin\WIN64\VREDCore.exe'

directory = os.path.dirname(__file__)

with open(os.path.join(directory, 'batch-data-optimization.py'), 'r') as file:
    # Read file content
    scriptContent = file.read()

    # Convert python script to base64, in order to import it into VRED
    base64EncodedScript = base64.b64encode(scriptContent.encode('UTF-8')).decode('UTF-8')

    # Start VRED with prepython and the base64 encoded script as input
    subprocess.call([vredCorePath, '-prepython={}'.format(base64EncodedScript)])

batch-data-optimization.py

import os

print("=[VRED Core Tutorial] Batch Data Optimization")

sourceDirectory = 'C:/VRED_Examples/unoptimized'
targetDirectory = 'C:/VRED_Examples/optimzied'

# Create target directory if it does not exist
if not os.path.exists(targetDirectory):
    os.makedirs(targetDirectory)

# Iterate over files in source directory and process each filename
for filename in os.listdir(sourceDirectory):
    print("=[VRED Core Tutorial] Optimize file: {}".format(filename))

    # Create paths for the source and the target file
    # Replace windows backslashes with linux style forward slashes
    sourcePath = os.path.join(sourceDirectory, filename).replace('\\\\','/')
    targetPath = os.path.join(targetDirectory, filename).replace('\\\\','/')

    # Load file in VRED
    load(sourcePath)

    # Optimize Geometry
    removeTransformNodesWithNoChildren(findNode("Root"))
    optimizeIndices(findNode("Root"))

    # Save optimized file
    save(targetPath)

# Close VRED instance
terminateVred()

batch-rendering.py

import sys
import base64
import subprocess

vredCorePath = r'D:\Programme\Autodesk\VREDCore-17.2\bin\WIN64\VREDCore.exe'

batchRenderingScript = '''
vredSceneFile = r"C:/ProgramData/Autodesk/VREDPro-<internalVersion>/examples/Automotive_Genesis.vpb"
variants = ("Black Metallic", "Blue Fire Metallic", "Silver Dark Metallic")
viewpoints = ("Home", "Left-Back", "Viewpoint")
pathTemplate = r"C:/VRED_Examples/batch_rendering/variant_{viewpoint}_{variant}.png"

print("=[VRED Core Tutorial] Load Source file...")
load(vredSceneFile)

print("=[VRED Core Tutorial] Iterate viewpoints and variants...")
for viewpointName in viewpoints:
    vp = vrCameraService.getViewpoint(viewpointName)
    if not vp.isNull():
        vp.activate()
        for variantName in variants:
            print("=[VRED Core Tutorial] Rendering {}, {}".format(viewpointName, variantName))
            vrVariants.selectVariantSet(variantName)
            createSnapshot(pathTemplate.format(viewpoint=viewpointName, variant=variantName), 1920, 1080)

print("End")
'''

# Convert python script to base64, in order to import it into VRED
base64EncodedScript = base64.b64encode(batchRenderingScript.encode('UTF-8')).decode('UTF-8')

# Start VRED with prepython and the base64 encoded script as input
subprocess.call([vredCorePath, '-prepython={}'.format(base64EncodedScript)])