"""Blender-only industrial art build, GLB exports, packed .blend and review renders. Run: blender --background --python art/blender/build_realistic_assets.py Blender coordinates: X lateral, Y course-forward, Z up, metres. """ from pathlib import Path import math import json import bpy import numpy as np from mathutils import Vector OUT = Path(__file__).resolve().parents[1] / 'generated' OUT.mkdir(parents=True, exist_ok=True) bpy.ops.object.select_all(action='SELECT') bpy.ops.object.delete(use_global=False) scene = bpy.context.scene scene.unit_settings.system = 'METRIC' scene.render.engine = 'CYCLES' scene.cycles.samples = 32 scene.cycles.use_denoising = True scene.render.resolution_percentage = 100 scene.world.color = (0.16, 0.16, 0.16) scene.view_settings.view_transform = 'AgX' rng = np.random.default_rng(19) def texture(name, base, rough=False): size = 256 noise = rng.random((size, size)) scratches = rng.random((size, 1)) > .97 pixels = np.ones((size, size, 4), dtype=np.float32) for channel in range(3): pixels[:, :, channel] = np.clip(base[channel] * (.88 + .18 * noise) + scratches * .025, 0, 1) img = bpy.data.images.new(name, width=size, height=size) if rough: img.colorspace_settings.name = 'Non-Color' img.pixels.foreach_set(pixels.ravel()) img.pack() return img def material(name, color, metal=0, roughness=.45, textured=False): mat = bpy.data.materials.new(name) mat.use_nodes = True mat.diffuse_color = (*color, 1) shader = mat.node_tree.nodes.get('Principled BSDF') shader.inputs['Base Color'].default_value = (*color, 1) shader.inputs['Metallic'].default_value = metal shader.inputs['Roughness'].default_value = roughness if textured: for socket, image in [('Base Color', texture(name+'_color', color)), ('Roughness', texture(name+'_roughness', (roughness,)*3, True))]: node = mat.node_tree.nodes.new('ShaderNodeTexImage') node.image = image mat.node_tree.links.new(node.outputs['Color'], shader.inputs[socket]) return mat coral = material('TeamCoral', (.48, .065, .025), .65, .32, True) mint = material('TeamMint', (.055, .38, .28), .6, .36, True) steel = material('BrushedTitanium', (.31, .36, .40), .85, .3, True) dark = material('GraphiteCeramic', (.028, .04, .052), .65, .34, True) rubber = material('JointRubber', (.012, .016, .018), .05, .78, True) deck = material('WeatheredDeck', (.25, .29, .3), .7, .57, True) gold = material('SafetyOchre', (.65, .34, .035), .5, .42, True) glass = material('OpticalGlass', (.012, .052, .068), .8, .12) white = material('MarkingIvory', (.78, .81, .75), .05, .42) lightmat = material('StatusLED', (.09, .7, .51), .3, .2) bsdf = lightmat.node_tree.nodes.get('Principled BSDF') bsdf.inputs['Emission Color'].default_value = (.1, 1, .66, 1) bsdf.inputs['Emission Strength'].default_value = 3 def box(name, pos, size, mat, bevel=.025): bpy.ops.mesh.primitive_cube_add(size=1, location=pos) obj = bpy.context.object obj.name = name obj.scale = size bpy.ops.object.transform_apply(location=False, rotation=False, scale=True) obj.data.materials.append(mat) if bevel: mod = obj.modifiers.new('Machined edge radius', 'BEVEL') mod.width = bevel mod.segments = 3 mod = obj.modifiers.new('Weighted corner normals', 'WEIGHTED_NORMAL') return obj def ball(name, pos, size, mat): bpy.ops.mesh.primitive_uv_sphere_add(segments=24, ring_count=12, location=pos) obj = bpy.context.object obj.name = name obj.scale = size bpy.ops.object.transform_apply(location=False, rotation=False, scale=True) obj.data.materials.append(mat) for poly in obj.data.polygons: poly.use_smooth = True return obj def rod(name, a, b, radius, mat, vertices=16): a, b = Vector(a), Vector(b) bpy.ops.mesh.primitive_cylinder_add(vertices=vertices, radius=radius, depth=(b-a).length, location=(a+b)/2) obj = bpy.context.object obj.name = name obj.rotation_mode = 'QUATERNION' obj.rotation_quaternion = (b-a).to_track_quat('Z', 'Y') obj.data.materials.append(mat) bevel = obj.modifiers.new('Turned edge', 'BEVEL') bevel.width = min(.008, radius*.2) bevel.segments = 2 return obj def label(text, pos, size, mat=white): bpy.ops.object.text_add(location=pos, rotation=(math.pi/2, 0, math.pi)) obj = bpy.context.object obj.data.body = text obj.data.align_x = 'CENTER' obj.data.size = size obj.data.extrude = .001 obj.data.materials.append(mat) bpy.ops.object.convert(target='MESH') return bpy.context.object def group_since(before, name): objects = [o for o in scene.objects if o not in before and o.type == 'MESH'] collection = bpy.data.collections.new(name) scene.collection.children.link(collection) for obj in objects: for old in list(obj.users_collection): old.objects.unlink(obj) collection.objects.link(obj) return objects def export(name, objects): bpy.ops.object.select_all(action='DESELECT') for obj in objects: obj.select_set(True) bpy.context.view_layer.objects.active = objects[0] bpy.ops.export_scene.gltf(filepath=str(OUT/name), export_format='GLB', use_selection=True, export_apply=True, export_animations=False, export_extras=True) body_start = set(scene.objects) roles = [('EyesHead',(0,0,3)), ('LeftArm',(-1,0,2)), ('RightArm',(1,0,2)), ('TorsoBack',(0,0,2)), ('LeftLeg',(-.45,0,.35)), ('RightLeg',(.45,0,.35))] for role, center in roles: before = set(scene.objects) x,y,z = center if role == 'EyesHead': ball('Helmet shell', center, (.4,.32,.42), coral) box('Visor surround', (0,.27,3.02), (.66,.14,.23), dark, .07) for side in [-1,1]: rod('Optical housing',(side*.18,.32,3.02),(side*.18,.40,3.02),.096,steel,32) rod('Optical lens',(side*.18,.401,3.02),(side*.18,.413,3.02),.074,glass,32) ball('Sensor LED',(side*.27,.35,2.98),(.017,.015,.017),lightmat) box('Brow plate',(0,.24,3.27),(.49,.18,.065),steel) elif role == 'TorsoBack': box('Pressure hull',center,(.82,.54,.94),dark,.13) box('Chest armour',(0,.29,2.08),(.71,.14,.68),coral,.075) label('S / 06',(0,.37,2.07),.13) for i in range(5): box('Intake louvre',(-.21+i*.105,.375,1.86),(.057,.035,.10),rubber,.008) for side in [-1,1]: rod('Back power canister',(side*.25,-.3,1.68),(side*.25,-.3,2.35),.105,steel) rod('Shoulder coupler',(side*.38,0,2.2),(side*.75,0,2.1),.105,rubber) rod('Hip actuator',(side*.22,0,1.62),(side*.42,0,.67),.09,steel) rod('Neck',(0,0,2.43),(0,0,2.72),.13,rubber) elif 'Arm' in role: box('Forearm housing',center,(.29,.33,.54),coral,.075) ball('Universal wrist',(x,0,1.68),(.15,.16,.13),rubber) box('Palm',(x,.05,1.49),(.25,.19,.23),dark,.045) for finger in [-1,0,1]: box('Gripper finger',(x+finger*.085,.12,1.30),(.065,.15,.19),steel,.025) for i in range(4): box('Cooling rib',(x,0,2.17+i*.034),(.30,.34,.013),rubber,.004) else: box('Ankle armour',(x,0,.5),(.29,.34,.37),coral,.05) box('Boot',(x,.13,.22),(.38,.64,.27),dark,.065) box('Toe guard',(x,.37,.26),(.35,.15,.16),steel,.03) for i in range(6): box('Sole tread',(x,-.12+i*.09,.075),(.39,.048,.055),rubber,.008) for side in [-1,1]: rod('Hex fastener',(x+side*.10,.18,z+.12),(x+side*.10,.20,z+.12),.027,steel,6) objects = [o for o in scene.objects if o not in before] # Each exported role is one multi-material mesh with its pivot at the solver node. bpy.ops.object.select_all(action='DESELECT') for obj in objects: obj.select_set(True) bpy.context.view_layer.objects.active=obj bpy.ops.object.convert(target='MESH') bpy.context.view_layer.objects.active=objects[0] bpy.ops.object.join() obj=bpy.context.object obj.name=role scene.cursor.location=center bpy.ops.object.origin_set(type='ORIGIN_CURSOR') obj['singularity_role']=role body = group_since(body_start,'SingularityBody') export('singularity_body.glb',body) before=set(scene.objects) for start,end in [(-5,7),(15,27),(27,47)]: box('Structural platform',(0,(start+end)/2,-.34),(9.2,end-start,.64),dark,.09) for yy in np.arange(start+.5,end,1): for xx in [-3.45,-1.15,1.15,3.45]: box('Deck panel',(xx,float(yy),.005),(2.25,.95,.10),deck,.018) for dx in [-1,1]: rod('Deck rivet',(xx+dx, float(yy)-.32,.056),(xx+dx,float(yy)-.32,.064),.035,steel,6) for xx in [-4.5,4.5]: box('Edge beacon',(xx,float(yy),.095),(.045,.52,.025),lightmat,.005) for xx in [-4.65,4.65]: box('Perimeter beam',(xx,(start+end)/2,-.22),(.17,end-start,.22),steel) for yy in np.arange(7.15,15,.30): box('Bridge plank',(0,float(yy),0),(2.58,.27,.12),steel,.018) for xx in [-1.15,1.15]: rod('Bridge cable',(xx,7,-.1),(xx,15,-.1),.045,dark) for yy in [6.4,15.5,27.5,41.4]: for xx in np.arange(-4.2,4.3,.6): box('Hazard stripe',(float(xx),yy,.071),(.30,.35,.008),gold,.002) box('Delivery inset',(0,26,.07),(4.8,2.6,.025),mint) delivery_label=label('02 / CARGO',(0,24.6,.095),.32) delivery_label.rotation_euler=(0,0,math.pi) course=group_since(before,'CourseModules') export('course_modules.glb',course) before=set(scene.objects) box('Cargo shell',(0,18,.54),(.9,.9,.9),gold,.065) for x in [-.43,.43]: for y in [17.57,18.43]: box('Cargo bumper',(x,y,.54),(.13,.13,.98),rubber,.025) for z in [.14,.90]: box('Cargo band',(0,18,z),(.94,.94,.07),steel) label('CARGO',(0,18.456,.58),.13,dark) for x in [-3.8,3.8]: box('Finish pillar',(x,42,2.8),(.32,.5,5.6),dark,.055) box('Finish light',(x,42.27,2.8),(.07,.035,5.2),lightmat,.012) box('Finish crossbeam',(0,42,5.6),(8.2,.5,.6),steel,.07) label('S I N G U L A R I T Y',(0,42.26,5.51),.26,dark) rod('Sweeper mast',(0,34,.1),(0,34,2.8),.11,dark) box('Sweeper arm',(0,34,1.5),(7.2,.24,.27),gold,.06) finish=group_since(before,'CargoAndFinish') export('cargo_and_finish.glb',finish) def area(name,pos,power,size,color): bpy.ops.object.light_add(type='AREA',location=pos) obj=bpy.context.object obj.name=name obj.data.energy=power obj.data.shape='DISK' obj.data.size=size obj.data.color=color obj.rotation_euler=(Vector((0,0,1.6))-obj.location).to_track_quat('-Z','Y').to_euler() area('Warm key',(3,4,8),1800,5,(1,.83,.67)) area('Cool rim',(-4,-3,6),2200,4,(.57,.75,1)) area('Soft fill',(-3,4,3),900,4,(.8,.93,1)) bpy.ops.object.light_add(type='SUN',rotation=(.4,-.5,-.5)) bpy.context.object.data.energy=2 bpy.context.object.data.angle=.15 bpy.ops.object.camera_add() camera=bpy.context.object scene.camera=camera def shot(name,pos,target,lens,width,height): camera.location=pos camera.rotation_euler=(Vector(target)-camera.location).to_track_quat('-Z','Y').to_euler() camera.data.lens=lens scene.render.resolution_x=width scene.render.resolution_y=height scene.render.filepath=str(OUT/name) bpy.ops.render.render(write_still=True) manifest={'units':'metres','axes':'Blender X lateral, Y forward, Z up', 'roles':[r for r,_ in roles], 'role_pivots':dict(roles), 'exports':['singularity_body.glb','course_modules.glb','cargo_and_finish.glb'], 'materials':[m.name for m in bpy.data.materials], 'mesh_objects':len([o for o in scene.objects if o.type=='MESH'])} (OUT/'asset-manifest.json').write_text(json.dumps(manifest,indent=2)) shot('body-preview.png',(4.5,7,3.6),(0,0,1.65),58,1100,1100) camera.data.type='ORTHO' camera.data.ortho_scale=64 shot('course-preview.png',(36,60,35),(0,21,0),46,1600,1000) bpy.context.preferences.filepaths.save_version=0 bpy.ops.wm.save_as_mainfile(filepath=str(OUT/'singularity-art.blend')) print('ASSET_BUILD_COMPLETE',OUT)