14_procedural_texturing.py

# blender --background --python 14_procedural_texturing.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_floor_and_lights() -> None:
    size = 200.0
    current_object = utils.create_plane(size=size, name="Floor")
    floor_mat = utils.add_material("Material_Plane", use_nodes=True, make_node_tree_empty=True)
    utils.build_checker_board_nodes(floor_mat.node_tree, size)
    current_object.data.materials.append(floor_mat)

    utils.create_area_light(location=(6.0, 0.0, 4.0),
                            rotation=(0.0, math.pi * 60.0 / 180.0, 0.0),
                            size=5.0,
                            color=(1.00, 0.70, 0.60, 1.00),
                            strength=1500.0,
                            name="Main Light")
    utils.create_area_light(location=(-6.0, 0.0, 2.0),
                            rotation=(0.0, -math.pi * 80.0 / 180.0, 0.0),
                            size=5.0,
                            color=(0.30, 0.42, 1.00, 1.00),
                            strength=1000.0,
                            name="Sub Light")


def set_scene_objects() -> bpy.types.Object:
    set_floor_and_lights()

    mat = utils.add_material("Peeling Paint Metal", use_nodes=True, make_node_tree_empty=True)
    utils.build_peeling_paint_metal_nodes(mat.node_tree)

    current_object = utils.create_smooth_monkey(location=(0.0, 0.0, 1.0))
    current_object.data.materials.append(mat)

    bpy.ops.object.empty_add(location=(0.0, -0.75, 1.20))
    focus_target = bpy.context.object
    return focus_target


# 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])

# Scene Building
scene = bpy.data.scenes["Scene"]
world = scene.world

## Reset
utils.clean_objects()

## Object
focus_target_object = set_scene_objects()

## Camera
camera_object = utils.create_camera(location=(0.0, -10.0, 2.2))

utils.add_track_to_constraint(camera_object, focus_target_object)
utils.set_camera_params(camera_object.data, focus_target_object, lens=180.0, fstop=2.4)

## Background
utils.build_rgb_background(world, rgb=(0.0, 0.0, 0.0, 1.0))

## Composition
utils.build_scene_composition(scene, dispersion=0.0)

# Render Setting
utils.set_output_properties(scene, resolution_percentage, output_file_path)
utils.set_cycles_renderer(scene, camera_object, num_samples)