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09_armature.py
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09_armature.py
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# blender --background --python 09_armature.py --render-anim -- </path/to/output/directory>/<name> <resolution_percentage> <num_samples>
# ffmpeg -r 24 -i </path/to/output/directory>/<name>%04d.png -pix_fmt yuv420p out.mp4
import bpy
import sys
import math
import os
sys.path.append(os.path.dirname(os.path.abspath(__file__)))
import utils
# Define paths for the PBR textures used in this scene
texture_paths = {
"Metal07": {
"ambient_occlusion": "",
"color": "./assets/cc0textures.com/[2K]Metal07/Metal07_col.jpg",
"displacement": "./assets/cc0textures.com/[2K]Metal07/Metal07_disp.jpg",
"metallic": "./assets/cc0textures.com/[2K]Metal07/Metal07_met.jpg",
"normal": "./assets/cc0textures.com/[2K]Metal07/Metal07_nrm.jpg",
"roughness": "./assets/cc0textures.com/[2K]Metal07/Metal07_rgh.jpg",
},
"Marble01": {
"ambient_occlusion": "",
"color": "./assets/cc0textures.com/[2K]Marble01/Marble01_col.jpg",
"displacement": "./assets/cc0textures.com/[2K]Marble01/Marble01_disp.jpg",
"metallic": "",
"normal": "./assets/cc0textures.com/[2K]Marble01/Marble01_nrm.jpg",
"roughness": "./assets/cc0textures.com/[2K]Marble01/Marble01_rgh.jpg",
},
}
def add_named_material(name: str, scale=(1.0, 1.0, 1.0), displacement_scale: float = 1.0) -> bpy.types.Material:
mat = utils.add_material(name, use_nodes=True, make_node_tree_empty=True)
utils.build_pbr_textured_nodes(mat.node_tree,
color_texture_path=texture_paths[name]["color"],
roughness_texture_path=texture_paths[name]["roughness"],
normal_texture_path=texture_paths[name]["normal"],
metallic_texture_path=texture_paths[name]["metallic"],
displacement_texture_path=texture_paths[name]["displacement"],
ambient_occlusion_texture_path=texture_paths[name]["ambient_occlusion"],
scale=scale,
displacement_scale=displacement_scale)
return mat
def create_skinned_object():
# Edit mode
bpy.ops.object.add(type='ARMATURE', enter_editmode=True, location=(0.0, 0.0, 0.0))
armature = bpy.context.object
bone1 = armature.data.edit_bones.new('Bone1')
bone1.head = (0.0, 0.0, 0.0)
bone1.tail = (0.0, 0.0, 1.0)
bone2 = armature.data.edit_bones.new('Bone2')
bone2.parent = bone1
bone2.use_connect = True
bone2.tail = (0.0, 0.0, 2.0)
# Pose mode
bpy.ops.object.mode_set(mode='POSE')
bone2 = armature.pose.bones['Bone2']
bone2.rotation_mode = 'XYZ'
bone2.rotation_euler = (0.0, 0.0, 0.0)
bone2.keyframe_insert(data_path='rotation_euler', frame=4)
bone2.rotation_euler = (+math.pi * 30.0 / 180.0, 0.0, 0.0)
bone2.keyframe_insert(data_path='rotation_euler', frame=12)
bone2.rotation_euler = (-math.pi * 30.0 / 180.0, 0.0, 0.0)
bone2.keyframe_insert(data_path='rotation_euler', frame=20)
bone2.rotation_euler = (+math.pi * 30.0 / 180.0, 0.0, 0.0)
bone2.keyframe_insert(data_path='rotation_euler', frame=28)
bone2.rotation_euler = (0.0, 0.0, 0.0)
bone2.keyframe_insert(data_path='rotation_euler', frame=36)
# Object mode
bpy.ops.object.mode_set(mode='OBJECT')
# Material
add_named_material("Metal07")
# Mesh
bpy.ops.mesh.primitive_cube_add(location=(0.0, 0.0, 1.0), calc_uvs=True)
cube = bpy.context.object
cube.name = "Cuboid"
cube.scale = (0.5, 0.5, 1.0)
utils.add_subdivision_surface_modifier(cube, 3, is_simple=True)
utils.add_subdivision_surface_modifier(cube, 3, is_simple=False)
utils.set_smooth_shading(cube.data)
cube.data.materials.append(bpy.data.materials["Metal07"])
# Set the armature as the parent of the cube using the "Automatic Weight" armature option
bpy.ops.object.select_all(action='DESELECT')
if bpy.app.version >= (2, 80, 0):
cube.select_set(True)
armature.select_set(True)
bpy.context.view_layer.objects.active = armature
else:
cube.select = True
armature.select = True
bpy.context.scene.objects.active = armature
bpy.ops.object.parent_set(type='ARMATURE_AUTO')
return armature
def set_scene_objects():
add_named_material("Marble01", displacement_scale=0.02)
current_object = create_skinned_object()
current_object.rotation_euler = (0.0, 0.0, math.pi * 60.0 / 180.0)
current_object = utils.create_plane(size=12.0, name="Floor")
current_object.data.materials.append(bpy.data.materials["Marble01"])
bpy.ops.object.empty_add(location=(0.0, 0.0, 1.0))
focus_target = bpy.context.object
return focus_target
# Args
output_file_path = str(sys.argv[sys.argv.index('--') + 1])
resolution_percentage = int(sys.argv[sys.argv.index('--') + 2])
num_samples = int(sys.argv[sys.argv.index('--') + 3])
# Parameters
hdri_path = "./assets/HDRIs/green_point_park_2k.hdr"
# Scene Building
scene = bpy.data.scenes["Scene"]
world = scene.world
## Reset
utils.clean_objects()
## Suzannes
focus_target = set_scene_objects()
## Camera
bpy.ops.object.camera_add(location=(0.0, -16.0, 2.0))
camera_object = bpy.context.object
utils.add_track_to_constraint(camera_object, focus_target)
utils.set_camera_params(camera_object.data, focus_target, lens=85, fstop=0.5)
## Lights
utils.build_environment_texture_background(world, hdri_path)
## Composition
utils.build_scene_composition(scene)
# Animation Setting
utils.set_animation(scene, fps=24, frame_start=1, frame_end=40)
# Render Setting
utils.set_output_properties(scene, resolution_percentage, output_file_path)
utils.set_cycles_renderer(scene, camera_object, num_samples, use_motion_blur=True)