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f4dcf6557f
## Description Fix various typos in the source code. This includes user facing code, documentation, and source comments. This PR has not been tested. Closes #1605
391 lines
19 KiB
Python
391 lines
19 KiB
Python
import bpy
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import bmesh
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import os
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import re
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import mathutils
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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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from distutils.util import strtobool
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def main():
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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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)
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parser = argparse.ArgumentParser(description=usage_text)
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parser.add_argument(
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"--sfmCameraPath", metavar='FILE', required=True,
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help="sfmData with the animated camera.",
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)
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parser.add_argument(
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"--useBackground", type=strtobool, required=True,
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help="Display the background image or not.",
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)
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parser.add_argument(
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"--undistortedImages", metavar='FILE', required=False,
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help="Save the generated file to the specified path",
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)
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parser.add_argument(
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"--model", metavar='FILE', required=True,
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help="Point Cloud or Mesh used in the rendering.",
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)
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# Point Cloud Arguments (when SFM Data is .abc)
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parser.add_argument(
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"--pointCloudDensity", type=float, required=False,
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help="Number of point from the cloud rendered",
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)
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parser.add_argument(
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"--particleSize", type=float, required=False,
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help="Scale of particles used to show the point cloud",
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)
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parser.add_argument(
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"--particleColor", type=str, required=False,
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help="Color of particles used to show the point cloud (SFM Data is .abc)",
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)
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# Mesh Arguments (when SFM Data is .obj)
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parser.add_argument(
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"--edgeColor", type=str, required=False,
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help="Color of the edges of the rendered object (SFM Data is .obj)",
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)
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# Output Arguments
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parser.add_argument(
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"--videoFormat", type=str, required=True,
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help="Format of the video output",
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)
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parser.add_argument(
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"--outputPath", metavar='FILE', required=True,
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help="Render an image to the specified path",
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)
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args = parser.parse_args(argv)
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if not argv:
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parser.print_help()
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return -1
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if not args.undistortedImages and args.useBackground:
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print("Error: --undistortedImages argument not given, aborting.")
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parser.print_help()
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return -1
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# Clear Current Scene
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try:
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for objects in bpy.data.objects:
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bpy.data.objects.remove(objects)
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except RuntimeError:
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print("Error while clearing current scene")
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raise
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# The Switcher is the setting for most of the colors (if you want to add some, do it here and in the arguments of the node)
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# Keep in mind that we use the same switcher for both the Edge Color and the Particle Color settings.
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# So if you add a color to one of them in the node, might has well add it to the other.
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switcher={
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'Grey':(0.2, 0.2, 0.2, 1),
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'White':(1, 1, 1, 1),
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'Red':(0.5, 0, 0, 1),
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'Green':(0, 0.5, 0, 1),
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'Magenta':(1.0, 0, 0.75, 1)
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}
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print("Import Undistorted Images")
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undis_imgs = []
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# Some of these variable will be very useful in the next steps keep them in mind
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number_of_frame = 0
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offset = 0
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first_image_name = ""
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try:
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# In this part of the code we take the undistorted images and we process some info about them
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# undis_imgs is the list of the images' names
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# first_image_name says it all in the name
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# The offset is important, it corresponds to the last part of the name of the first frame.
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# In most case, it will be 0 but the sequence may start from a more advanced frame.
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if args.useBackground:
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files = os.listdir(args.undistortedImages)
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for f in files :
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if f.endswith(".exr") and not f.__contains__("UVMap"):
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undis_imgs.append({"name":f})
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number_of_frame = len(undis_imgs)
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print("undis_imgs: " + str(undis_imgs))
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first_image_name = undis_imgs[0]['name']
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offset = int(re.findall(r'\d+', first_image_name)[-1]) - 1
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except RuntimeError:
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print("Error while importing the undistorted images.")
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raise
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print("Import Animated Camera")
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try:
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# In this part of the code we import the alembic in the cam_path to get the animated camera
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# We use cam_location and cam_obj to store information about this camera
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# We look for a camera (of type 'Persp') with the name 'anim' (not to confuse them with previously imported cams)
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# Once the cam has been found we select the main camera of the scene.
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# The rest of the code is setting up the display of the background image,
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# As it is not a simple image but an image Sequence, we have to use the offset and the number of frames.
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# We also have to make the scene render film transparent because we want to be able to display
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# our background afterwards.
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bpy.ops.wm.alembic_import(filepath=args.sfmCameraPath)
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animated_cams = bpy.context.selected_editable_objects[:]
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cam_location = mathutils.Vector((0, 0, 0))
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cam_obj = None
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for obj in animated_cams:
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if obj.data and obj.data.type == 'PERSP' and "anim" in obj.data.name:
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bpy.context.scene.collection.objects.link(obj)
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bpy.context.view_layer.objects.active = obj
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bpy.context.scene.camera = obj
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cam_location = obj.location
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cam_obj = obj
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if args.useBackground :
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bpy.ops.image.open(filepath=args.undistortedImages + "/" + first_image_name, directory=args.undistortedImages, files=undis_imgs, relative_path=True, show_multiview=False)
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bpy.data.cameras[obj.data.name].background_images.new()
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bpy.data.cameras[obj.data.name].show_background_images = True
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bpy.data.cameras[obj.data.name].background_images[0].image = bpy.data.images[first_image_name]
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bpy.data.cameras[obj.data.name].background_images[0].frame_method = 'CROP'
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bpy.data.cameras[obj.data.name].background_images[0].image_user.frame_offset = offset
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bpy.data.cameras[obj.data.name].background_images[0].image_user.frame_duration = number_of_frame
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bpy.data.cameras[obj.data.name].background_images[0].image_user.frame_start = 1
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bpy.context.scene.render.film_transparent = True
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except RuntimeError:
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print("Error while importing the alembic file (Animated Camera): " + args.sfmCameraPath)
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raise
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print("Create the particle plane")
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try:
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# We are using a particle system later in the code to display the Point Cloud.
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# We need to setup a model for the particle, a plane that always face the camera.
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# It is declared as a child of the camera in the parenting system, so when the camera moves, the plane moves accordingly.
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# We use an 'Emission' material so it does not react to lights.
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# To do that we have to use the shader 'node_tree' we clear all links between nodes, create the emission node
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# and connect it to the 'Material Output' node.
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plane = bpy.data.meshes.new('Plane')
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objectsPlane = bpy.data.objects.new(name="Plane", object_data=plane)
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bm = bmesh.new()
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bmesh.ops.create_grid(bm, x_segments = 1, y_segments = 1, size = 1.0)
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bm.to_mesh(plane)
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bm.free()
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if args.model.lower().endswith('.abc'):
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objectsPlane.scale = mathutils.Vector((args.particleSize, args.particleSize, args.particleSize))
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cam_location.y += -2.0
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objectsPlane.location = cam_location
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bpy.context.scene.collection.objects.link(objectsPlane)
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bpy.data.objects['Plane'].parent = cam_obj
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bpy.context.view_layer.objects.active = objectsPlane
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col = bpy.data.materials.new('Color')
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objectsPlane.active_material = col
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objectsPlane.active_material.use_nodes = True
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objectsPlane.active_material.node_tree.links.clear()
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objectsPlane.active_material.node_tree.nodes.new(type='ShaderNodeEmission')
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objectsPlane.active_material.node_tree.links.new(objectsPlane.active_material.node_tree.nodes['Emission'].outputs['Emission'], objectsPlane.active_material.node_tree.nodes['Material Output'].inputs['Surface'])
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if args.model.lower().endswith('.abc'):
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objectsPlane.active_material.node_tree.nodes['Emission'].inputs[0].default_value = switcher.get(args.particleColor, 'Invalid Color')
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except RuntimeError:
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print("Error: while setting up the particle model.")
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raise
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if args.model.lower().endswith('.abc'):
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print("Import ABC Point Cloud")
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# After importing the alembic, we look for a specific Point Cloud in the file.
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# We make it the active object (important for the node_tree later).
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# Then, we create a particle system on it. Render_type set to object and the said object is the plane.
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# Emit_from 'vert' so the points of the point cloud are the one rendering the particle.
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# The count is the number of particles repeated on the point cloud. We use the rate given as arguments
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# to give a number.
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# use_rotation and use_rotation_instance ensure that we use the same rotation than the model (which is needed to have the particle always facing the camera).
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# Import Point Cloud
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try:
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bpy.ops.wm.alembic_import(filepath=args.model)
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all_abc_info = bpy.context.selected_editable_objects[:]
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for obj in all_abc_info:
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if obj.name == 'mvgPointCloud.001': #May have a problem with such hard code
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bpy.context.scene.collection.objects.link(obj)
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bpy.context.view_layer.objects.active = obj
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obj.modifiers.new("ParticleSystem", "PARTICLE_SYSTEM")
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particle_system = bpy.data.particles["ParticleSystem"]
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particle_system.render_type = 'OBJECT'
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particle_system.instance_object = bpy.data.objects["Plane"]
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particle_system.emit_from = 'VERT'
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if args.model.lower().endswith('.abc'):
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particle_system.count = int(args.pointCloudDensity * len(obj.data.vertices.values()))
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particle_system.frame_end = 1.0
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particle_system.use_emit_random = False
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particle_system.particle_size = 0.02
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particle_system.physics_type = 'NO'
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particle_system.use_rotations = True
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particle_system.use_rotation_instance = True
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particle_system.rotation_mode = 'GLOB_X'
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except RuntimeError:
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print("Error while importing the alembic file (Point Cloud): " + args.model)
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raise
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# For showing an outline of the object, we need to add two materials to the mesh:
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# Center and Edge, we are using a method that consists in having a "bold" effect on the Edge Material so we can see it
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# around the Center material. We use a Solidify Modifier on which we flip normals and reduce Thickness to below zero.
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# The more the thickness get below zero, the more the edge will be largely revealed.
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elif args.model.lower().endswith('.obj'):
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print("Import OBJ")
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bpy.ops.import_scene.obj(filepath=args.model)
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center = bpy.data.materials.new('Center')
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center.use_nodes = True
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center.node_tree.links.clear()
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center.node_tree.nodes.new(type='ShaderNodeEmission')
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center.node_tree.links.new(center.node_tree.nodes['Emission'].outputs['Emission'], center.node_tree.nodes['Material Output'].inputs['Surface'])
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center.node_tree.nodes['Emission'].inputs[0].default_value = (0,0,0,0)
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if not args.useBackground and args.model.lower().endswith('.obj'):
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center.node_tree.nodes['Emission'].inputs[0].default_value = (0.05, 0.05, 0.05, 1) #Same Color as the no background color in blender
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edge = bpy.data.materials.new('Edge')
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edge.use_nodes = True
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edge.node_tree.links.clear()
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edge.node_tree.nodes.new(type='ShaderNodeEmission')
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edge.use_backface_culling = True
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edge.node_tree.links.new(edge.node_tree.nodes['Emission'].outputs['Emission'], edge.node_tree.nodes['Material Output'].inputs['Surface'])
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edge.node_tree.nodes['Emission'].inputs[0].default_value = switcher.get(args.edgeColor, 'Invalid Color')
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bpy.data.meshes['mesh'].materials.clear()
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bpy.data.meshes['mesh'].materials.append(bpy.data.materials['Center'])
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bpy.data.meshes['mesh'].materials.append(bpy.data.materials['Edge'])
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print(bpy.data.meshes['mesh'].materials.values())
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bpy.data.objects['mesh'].modifiers.new('New', type='SOLIDIFY')
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bpy.data.objects['mesh'].modifiers["New"].thickness = -0.01
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bpy.data.objects['mesh'].modifiers["New"].use_rim = False
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bpy.data.objects['mesh'].modifiers["New"].use_flip_normals = True
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bpy.data.objects['mesh'].modifiers["New"].material_offset = 1
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else:
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raise ValueError("sfmData: unknown file format, only alembic (.abc) and object (.obj) are supported: " + args.model)
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print("Create compositing graph")
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# We use the compositing graph to add the background image.
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# If the SFM Data is a Mesh, its extension is .obj so we have to build the graph accordingly. If the Background image setting was activated,
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# we need to include it in our node tree through the "Image" and Scale node.
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try:
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bpy.context.scene.use_nodes = True
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# Create all the nodes that we could need
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bpy.context.scene.node_tree.nodes.new(type="CompositorNodeAlphaOver")
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bpy.context.scene.node_tree.nodes.new(type="CompositorNodeScale")
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bpy.context.scene.node_tree.nodes.new(type="CompositorNodeImage")
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bpy.context.scene.node_tree.nodes.new(type="CompositorNodePremulKey")
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bpy.context.scene.node_tree.nodes.new(type="CompositorNodeMixRGB")
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bpy.data.scenes["Scene"].node_tree.nodes["Mix"].blend_type = 'LIGHTEN'
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bpy.data.scenes["Scene"].node_tree.nodes["Image"].frame_duration = number_of_frame
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bpy.data.scenes["Scene"].node_tree.nodes["Image"].frame_offset = offset
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bpy.data.scenes["Scene"].node_tree.nodes["Scale"].space = 'RENDER_SIZE'
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bpy.data.scenes["Scene"].node_tree.nodes["Scale"].frame_method = 'CROP'
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# create links between nodes
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if args.useBackground :
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if args.model.lower().endswith('.obj'):
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bpy.context.scene.node_tree.nodes["Image"].image = bpy.data.images[first_image_name]
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bpy.context.scene.node_tree.links.new(bpy.context.scene.node_tree.nodes['Mix'].outputs['Image'], bpy.context.scene.node_tree.nodes['Composite'].inputs['Image'])
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# Two Inputs of AlphaOver are named "Image" so we use indexes instead
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bpy.context.scene.node_tree.links.new(bpy.context.scene.node_tree.nodes['Render Layers'].outputs['Image'], bpy.context.scene.node_tree.nodes['Alpha Convert'].inputs['Image'])
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bpy.context.scene.node_tree.links.new(bpy.context.scene.node_tree.nodes['Alpha Convert'].outputs['Image'], bpy.context.scene.node_tree.nodes['Mix'].inputs[2])
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bpy.context.scene.node_tree.links.new(bpy.context.scene.node_tree.nodes['Scale'].outputs['Image'], bpy.context.scene.node_tree.nodes['Mix'].inputs[1])
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bpy.context.scene.node_tree.links.new(bpy.context.scene.node_tree.nodes['Image'].outputs['Image'], bpy.context.scene.node_tree.nodes['Scale'].inputs['Image'])
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else:
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bpy.context.scene.node_tree.nodes["Image"].image = bpy.data.images[first_image_name]
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bpy.context.scene.node_tree.links.new(bpy.context.scene.node_tree.nodes['Alpha Over'].outputs['Image'], bpy.context.scene.node_tree.nodes['Composite'].inputs['Image'])
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# Two Inputs of AlphaOver are named "Image" so we use indexes instead
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bpy.context.scene.node_tree.links.new(bpy.context.scene.node_tree.nodes['Render Layers'].outputs['Image'], bpy.context.scene.node_tree.nodes['Alpha Over'].inputs[2])
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bpy.context.scene.node_tree.links.new(bpy.context.scene.node_tree.nodes['Scale'].outputs['Image'], bpy.context.scene.node_tree.nodes['Alpha Over'].inputs[1])
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bpy.context.scene.node_tree.links.new(bpy.context.scene.node_tree.nodes['Image'].outputs['Image'], bpy.context.scene.node_tree.nodes['Scale'].inputs['Image'])
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else:
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if args.model.lower().endswith('.obj'):
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bpy.context.scene.node_tree.links.new(bpy.context.scene.node_tree.nodes['Mix'].outputs['Image'], bpy.context.scene.node_tree.nodes['Composite'].inputs['Image'])
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# Two Inputs of AlphaOver are named "Image" so we use indexes instead
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bpy.context.scene.node_tree.links.new(bpy.context.scene.node_tree.nodes['Render Layers'].outputs['Image'], bpy.context.scene.node_tree.nodes['Alpha Convert'].inputs['Image'])
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bpy.context.scene.node_tree.links.new(bpy.context.scene.node_tree.nodes['Alpha Convert'].outputs['Image'], bpy.context.scene.node_tree.nodes['Mix'].inputs[2])
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bpy.context.scene.node_tree.links.new(bpy.context.scene.node_tree.nodes['Scale'].outputs['Image'], bpy.context.scene.node_tree.nodes['Mix'].inputs[1])
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bpy.context.scene.node_tree.links.new(bpy.context.scene.node_tree.nodes['Image'].outputs['Image'], bpy.context.scene.node_tree.nodes['Scale'].inputs['Image'])
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except RuntimeError:
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print("Error while creating the compositing graph.")
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raise
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try:
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# Setup the render format and filepath
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bpy.context.scene.render.image_settings.file_format = 'FFMPEG'
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if args.videoFormat == 'mkv':
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bpy.context.scene.render.ffmpeg.format = 'MKV'
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elif args.videoFormat == 'avi':
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bpy.context.scene.render.ffmpeg.format = 'AVI'
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elif args.videoFormat == 'mov':
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bpy.context.scene.render.ffmpeg.format = 'QUICKTIME'
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else:
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bpy.context.scene.render.ffmpeg.format = 'MPEG4'
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bpy.context.scene.render.filepath = args.outputPath + '/render.' + args.videoFormat
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print("Start Rendering")
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# Render everything on to the filepath
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bpy.ops.render.render(animation=True)
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print("Rendering Done")
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# Starts a player automatically to play the output
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# bpy.ops.render.play_rendered_anim()
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except RuntimeError:
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print("Error while rendering the scene")
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raise
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return 0
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if __name__ == "__main__":
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err = 1
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try:
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err = main()
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except Exception as e:
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print("\n" + str(e))
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sys.exit(err)
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sys.exit(err)
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