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05_composition.py
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05_composition.py
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# blender --background --python 05_composition.py --render-frame 1 -- </path/to/output/image> <resolution_percentage> <num_samples>
import bpy
import sys
import math
import os
working_dir_path = os.path.dirname(os.path.abspath(__file__))
sys.path.append(working_dir_path)
import utils
def set_principled_node_as_rough_blue(principled_node: bpy.types.Node) -> None:
utils.set_principled_node(
principled_node=principled_node,
base_color=(0.1, 0.2, 0.6, 1.0),
metallic=0.5,
specular=0.5,
roughness=0.9,
)
def set_principled_node_as_ceramic(principled_node: bpy.types.Node) -> None:
utils.set_principled_node(
principled_node=principled_node,
base_color=(0.8, 0.8, 0.8, 1.0),
subsurface=0.1,
subsurface_color=(0.9, 0.9, 0.9, 1.0),
subsurface_radius=(1.0, 1.0, 1.0),
metallic=0.2,
specular=0.5,
roughness=0.0,
)
def set_principled_node_as_gold(principled_node: bpy.types.Node) -> None:
utils.set_principled_node(
principled_node=principled_node,
base_color=(1.00, 0.71, 0.22, 1.0),
metallic=1.0,
specular=0.5,
roughness=0.1,
)
def set_principled_node_as_glass(principled_node: bpy.types.Node) -> None:
utils.set_principled_node(principled_node=principled_node,
base_color=(0.95, 0.95, 0.95, 1.0),
metallic=0.0,
specular=0.5,
roughness=0.0,
clearcoat=0.5,
clearcoat_roughness=0.030,
ior=1.45,
transmission=0.98)
def set_scene_objects() -> bpy.types.Object:
left_object, center_object, right_object = utils.create_three_smooth_monkeys()
mat = utils.add_material("Material_Left", use_nodes=True, make_node_tree_empty=True)
nodes = mat.node_tree.nodes
links = mat.node_tree.links
output_node = nodes.new(type='ShaderNodeOutputMaterial')
principled_node = nodes.new(type='ShaderNodeBsdfPrincipled')
set_principled_node_as_glass(principled_node)
links.new(principled_node.outputs['BSDF'], output_node.inputs['Surface'])
left_object.data.materials.append(mat)
mat = utils.add_material("Material_Center", use_nodes=True, make_node_tree_empty=True)
nodes = mat.node_tree.nodes
links = mat.node_tree.links
output_node = nodes.new(type='ShaderNodeOutputMaterial')
principled_node = nodes.new(type='ShaderNodeBsdfPrincipled')
set_principled_node_as_gold(principled_node)
links.new(principled_node.outputs['BSDF'], output_node.inputs['Surface'])
center_object.data.materials.append(mat)
mat = utils.add_material("Material_Right", use_nodes=True, make_node_tree_empty=True)
nodes = mat.node_tree.nodes
links = mat.node_tree.links
output_node = nodes.new(type='ShaderNodeOutputMaterial')
principled_node = nodes.new(type='ShaderNodeBsdfPrincipled')
set_principled_node_as_rough_blue(principled_node)
links.new(principled_node.outputs['BSDF'], output_node.inputs['Surface'])
right_object.data.materials.append(mat)
current_object = utils.create_plane(size=20.0, name="Floor")
mat = utils.add_material("Material_Plane", use_nodes=True, make_node_tree_empty=True)
nodes = mat.node_tree.nodes
links = mat.node_tree.links
output_node = nodes.new(type='ShaderNodeOutputMaterial')
principled_node = nodes.new(type='ShaderNodeBsdfPrincipled')
set_principled_node_as_ceramic(principled_node)
links.new(principled_node.outputs['BSDF'], output_node.inputs['Surface'])
current_object.data.materials.append(mat)
bpy.ops.object.empty_add(location=(0.0, -0.75, 1.0))
focus_target = bpy.context.object
return focus_target
def build_scene_composition(scene: bpy.types.Scene) -> None:
scene.use_nodes = True
utils.clean_nodes(scene.node_tree.nodes)
render_layer_node = scene.node_tree.nodes.new(type="CompositorNodeRLayers")
vignette_node = utils.create_vignette_node(scene.node_tree)
vignette_node.inputs["Amount"].default_value = 0.70
lens_distortion_node = scene.node_tree.nodes.new(type="CompositorNodeLensdist")
lens_distortion_node.inputs["Distort"].default_value = -0.050
lens_distortion_node.inputs["Dispersion"].default_value = 0.080
color_correction_node = scene.node_tree.nodes.new(type="CompositorNodeColorCorrection")
color_correction_node.master_saturation = 1.10
color_correction_node.master_gain = 1.40
glare_node = scene.node_tree.nodes.new(type="CompositorNodeGlare")
glare_node.glare_type = 'GHOSTS'
glare_node.iterations = 2
glare_node.quality = 'HIGH'
composite_node = scene.node_tree.nodes.new(type="CompositorNodeComposite")
scene.node_tree.links.new(render_layer_node.outputs['Image'], vignette_node.inputs['Image'])
scene.node_tree.links.new(vignette_node.outputs['Image'], lens_distortion_node.inputs['Image'])
scene.node_tree.links.new(lens_distortion_node.outputs['Image'], color_correction_node.inputs['Image'])
scene.node_tree.links.new(color_correction_node.outputs['Image'], glare_node.inputs['Image'])
scene.node_tree.links.new(glare_node.outputs['Image'], composite_node.inputs['Image'])
utils.arrange_nodes(scene.node_tree)
# Args
output_file_path = bpy.path.relpath(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 = os.path.join(working_dir_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
build_scene_composition(scene)
# Render Setting
utils.set_output_properties(scene, resolution_percentage, output_file_path)
utils.set_cycles_renderer(scene, camera_object, num_samples)