123 lines
4.0 KiB
Python
123 lines
4.0 KiB
Python
# This script is an example of how you can run blender from the command line
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# (in background mode with no interface) to automate tasks, in this example it
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# creates a text object, camera and light, then renders and/or saves it.
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# This example also shows how you can parse command line options to scripts.
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#
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# Example usage for this test.
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# blender --background --factory-startup --python $HOME/background_job.py -- \
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# --text="Hello World" \
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# --render="/tmp/hello" \
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# --save="/tmp/hello.blend"
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#
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# Notice:
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# '--factory-startup' is used to avoid the user default settings from
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# interfearing with automated scene generation.
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#
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# '--' causes blender to ignore all following arguments so python can use them.
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#
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# See blender --help for details.
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import bpy
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def example_function(text, save_path, render_path):
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scene = bpy.context.scene
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# Clear existing objects.
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scene.camera = None
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for obj in scene.objects:
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scene.objects.unlink(obj)
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txt_data = bpy.data.curves.new(name="MyText", type='FONT')
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# Text Object
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txt_ob = bpy.data.objects.new(name="MyText", object_data=txt_data)
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scene.objects.link(txt_ob) # add the data to the scene as an object
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txt_data.body = text # the body text to the command line arg given
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txt_data.align = 'CENTER' # center text
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# Camera
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cam_data = bpy.data.cameras.new("MyCam")
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cam_ob = bpy.data.objects.new(name="MyCam", object_data=cam_data)
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scene.objects.link(cam_ob) # instance the camera object in the scene
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scene.camera = cam_ob # set the active camera
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cam_ob.location = 0.0, 0.0, 10.0
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# Lamp
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lamp_data = bpy.data.lamps.new("MyLamp", 'POINT')
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lamp_ob = bpy.data.objects.new(name="MyCam", object_data=lamp_data)
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scene.objects.link(lamp_ob)
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lamp_ob.location = 2.0, 2.0, 5.0
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if save_path:
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try:
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f = open(save_path, 'w')
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f.close()
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ok = True
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except:
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print("Cannot save to path %r" % save_path)
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import traceback
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traceback.print_exc()
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if ok:
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bpy.ops.wm.save_as_mainfile(filepath=save_path)
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if render_path:
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render = scene.render
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render.use_file_extension = True
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render.filepath = render_path
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bpy.ops.render.render(write_still=True)
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def main():
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import sys # to get command line args
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import argparse # to parse options for us and print a nice help message
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# get the args passed to blender after "--", all of which are ignored by
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# blender so scripts may receive their own arguments
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argv = sys.argv
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if "--" not in argv:
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argv = [] # as if no args are passed
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else:
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argv = argv[argv.index("--") + 1:] # get all args after "--"
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# When --help or no args are given, print this help
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usage_text = \
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"Run blender in background mode with this script:"
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" blender --background --python " + __file__ + " -- [options]"
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parser = argparse.ArgumentParser(description=usage_text)
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# Example utility, add some text and renders or saves it (with options)
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# Possible types are: string, int, long, choice, float and complex.
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parser.add_argument("-t", "--text", dest="text", type=str, required=True,
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help="This text will be used to render an image")
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parser.add_argument("-s", "--save", dest="save_path", metavar='FILE',
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help="Save the generated file to the specified path")
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parser.add_argument("-r", "--render", dest="render_path", metavar='FILE',
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help="Render an image to the specified path")
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args = parser.parse_args(argv) # In this example we wont use the args
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if not argv:
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parser.print_help()
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return
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if not args.text:
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print("Error: --text=\"some string\" argument not given, aborting.")
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parser.print_help()
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return
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# Run the example function
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example_function(args.text, args.save_path, args.render_path)
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print("batch job finished, exiting")
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if __name__ == "__main__":
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main()
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