"""M1114-style armoured HMMWV. Clean-run Blender 5.2 builder. Run: blender -b --python-exit-code 1 --python build_humvee-armored.py Coordinates while authoring: X left, -Y front, Z up; glTF conversion is Y up. CC0 sources: https://polyhaven.com/license . No external Python dependencies. """ import bpy, bmesh, math, os, json, urllib.request, subprocess, sys from mathutils import Vector from math import sin, cos, pi import numpy as np ROOT=os.path.dirname(os.path.abspath(__file__)) TEX=os.path.join(ROOT,'textures');os.makedirs(TEX,exist_ok=True) bpy.ops.object.select_all(action='SELECT');bpy.ops.object.delete(use_global=False) for d in list(bpy.data.materials):bpy.data.materials.remove(d) sc=bpy.context.scene;sc.unit_settings.system='METRIC';sc.render.engine='CYCLES' sc.cycles.samples=24;sc.cycles.use_denoising=True prefs=bpy.context.preferences.addons['cycles'].preferences prefs.compute_device_type='OPTIX';prefs.get_devices() for d in prefs.devices:d.use=d.type=='OPTIX' sc.cycles.device='GPU';sc.render.bake.margin=4 sc.view_settings.view_transform='AgX' # Registered photographic inputs, all maps from the requested CC0 endpoint. SOURCES=['rusty_metal_03','rubberized_track','fabric_leather_02'] def download(id,mp): p=os.path.join(TEX,f'{id}_{mp}_1k.jpg') if not os.path.exists(p): url=f'https://dl.polyhaven.org/file/ph-assets/Textures/jpg/1k/{id}/{id}_{mp}_1k.jpg' subprocess.run(['curl','--fail','-L','--retry','2','-sS',url,'-o',p],check=True) return p for id in SOURCES: for mp in ['diff','nor_gl','arm']:download(id,mp) M={}; groups={}; G='Body' def node(nt,kind):return nt.nodes.new(kind) def link(nt,a,b):nt.links.new(a,b) def image_node(nt,path,non=False): n=node(nt,'ShaderNodeTexImage');n.image=bpy.data.images.load(path,check_existing=True) if non:n.image.colorspace_settings.name='Non-Color' return n # Bake reusable 1 m surface tiles through Cycles, rather than a vehicle-wide atlas. def bake_mat(name,source,color,rough,metal,normal_strength=.15): m=bpy.data.materials.new(name);m.use_nodes=True;nt=m.node_tree;nt.nodes.clear() out=node(nt,'ShaderNodeOutputMaterial');bs=node(nt,'ShaderNodeBsdfPrincipled');link(nt,bs.outputs['BSDF'],out.inputs['Surface']) uv=node(nt,'ShaderNodeTexCoord');diff=image_node(nt,download(source,'diff'));arm=image_node(nt,download(source,'arm'),True);nor=image_node(nt,download(source,'nor_gl'),True) for n in (diff,arm,nor):link(nt,uv.outputs['UV'],n.inputs['Vector']) if name=='Paint': scale=node(nt,'ShaderNodeVectorMath');scale.operation='SCALE';scale.inputs[3].default_value=3.0;link(nt,uv.outputs['UV'],scale.inputs[0]) for n in (diff,arm,nor):link(nt,scale.outputs[0],n.inputs['Vector']) bw=node(nt,'ShaderNodeRGBToBW');link(nt,diff.outputs['Color'],bw.inputs[0]) ramp=node(nt,'ShaderNodeValToRGB');link(nt,bw.outputs[0],ramp.inputs[0]) if name=='Paint':lo,hi=.58,.98 elif name=='Rubber':lo,hi=.016,.062 elif name=='Weapon':lo,hi=.035,.10 elif name=='Steel':lo,hi=.12,.30 else:lo,hi=.09,.21 ramp.color_ramp.elements[0].position=.045 if name=='Paint' else 0 ramp.color_ramp.elements[1].position=.54 if name=='Paint' else 1 ramp.color_ramp.elements[0].color=tuple(c*lo for c in color)+(1,) ramp.color_ramp.elements[1].color=tuple(c*hi for c in color)+(1,) noise=node(nt,'ShaderNodeTexNoise');noise.inputs['Scale'].default_value=115;noise.inputs['Roughness'].default_value=.78;link(nt,uv.outputs['UV'],noise.inputs['Vector']) mix=node(nt,'ShaderNodeMixRGB');mix.blend_type='MULTIPLY';mix.inputs[0].default_value=.14;link(nt,ramp.outputs[0],mix.inputs[1]);link(nt,noise.outputs['Fac'],mix.inputs[2]) # Rain/abrasion streaks from stretched noise, fixed in the baked tile. mapping=node(nt,'ShaderNodeVectorMath');mapping.operation='MULTIPLY';mapping.inputs[1].default_value=(75,3,1);link(nt,uv.outputs['UV'],mapping.inputs[0]) streak=node(nt,'ShaderNodeTexNoise');streak.inputs['Scale'].default_value=2;link(nt,mapping.outputs[0],streak.inputs[0]) smix=node(nt,'ShaderNodeMixRGB');smix.blend_type='MULTIPLY';smix.inputs[0].default_value=.10;link(nt,mix.outputs[0],smix.inputs[1]);link(nt,streak.outputs['Fac'],smix.inputs[2]) if name=='Paint': sepUV=node(nt,'ShaderNodeSeparateXYZ');link(nt,uv.outputs['UV'],sepUV.inputs[0]) def mathnode(op,a,b): q=node(nt,'ShaderNodeMath');q.operation=op for k,v in enumerate([a,b]): if isinstance(v,(float,int)):q.inputs[k].default_value=v else:link(nt,v,q.inputs[k]) return q.outputs[0] du=mathnode('MINIMUM',sepUV.outputs['X'],mathnode('SUBTRACT',1,sepUV.outputs['X'])) dv=mathnode('MINIMUM',sepUV.outputs['Y'],mathnode('SUBTRACT',1,sepUV.outputs['Y'])) edge=mathnode('MINIMUM',du,dv) grime=node(nt,'ShaderNodeMapRange');grime.inputs['From Min'].default_value=.003;grime.inputs['From Max'].default_value=.047;grime.inputs['To Min'].default_value=.67;grime.inputs['To Max'].default_value=1;link(nt,edge,grime.inputs['Value']) trim=node(nt,'ShaderNodeMixRGB');trim.blend_type='MULTIPLY';trim.inputs[0].default_value=1;link(nt,smix.outputs[0],trim.inputs[1]);link(nt,grime.outputs[0],trim.inputs[2]);smix=trim nm=node(nt,'ShaderNodeNormalMap');nm.inputs['Strength'].default_value=normal_strength;link(nt,nor.outputs[0],nm.inputs['Color']);link(nt,nm.outputs[0],bs.inputs['Normal']) link(nt,smix.outputs[0],bs.inputs['Base Color']);bs.inputs['Metallic'].default_value=metal;bs.inputs['Roughness'].default_value=rough bpy.ops.mesh.primitive_plane_add(size=1,location=(0,0,-10));plane=bpy.context.object;plane.data.materials.append(m) target=node(nt,'ShaderNodeTexImage');em=node(nt,'ShaderNodeEmission') def bake_image(suffix,res,typ,src=None): im=bpy.data.images.new(name+'_'+suffix,width=res,height=res,alpha=False) if suffix!='base':im.colorspace_settings.name='Non-Color' target.image=im;nt.nodes.active=target if src: link(nt,src,em.inputs['Color']);link(nt,em.outputs[0],out.inputs['Surface']) else:link(nt,bs.outputs[0],out.inputs['Surface']) sc.cycles.samples=4;bpy.ops.object.bake(type=typ) im.filepath_raw=os.path.join(TEX,name+'_'+suffix+('.jpg' if suffix=='base' else '.png'));im.file_format='JPEG' if suffix=='base' else 'PNG';im.save() return im base=bake_image('base',1024,'EMIT',smix.outputs[0]) normal=bake_image('normal',1024 if name in ['Paint','Rubber'] else 512,'NORMAL') sep=node(nt,'ShaderNodeSeparateColor');link(nt,arm.outputs[0],sep.inputs[0]) comb=node(nt,'ShaderNodeCombineColor');comb.inputs['Red'].default_value=1 mul=node(nt,'ShaderNodeMath');mul.operation='MULTIPLY_ADD';mul.inputs[1].default_value=.20;mul.inputs[2].default_value=rough-.12;link(nt,sep.outputs['Green'],mul.inputs[0]);link(nt,mul.outputs[0],comb.inputs['Green']);comb.inputs['Blue'].default_value=metal link(nt,sep.outputs['Red'],comb.inputs['Red']);orm=bake_image('ORM',512 if name=='Paint' else 256,'EMIT',comb.outputs[0]) bpy.data.objects.remove(plane,do_unlink=True) nt.nodes.clear();out=node(nt,'ShaderNodeOutputMaterial');bs=node(nt,'ShaderNodeBsdfPrincipled');link(nt,bs.outputs[0],out.inputs[0]) tex=node(nt,'ShaderNodeTexImage');tex.image=base if name=='Paint': mix=node(nt,'ShaderNodeMixRGB');mix.blend_type='MULTIPLY';mix.inputs[0].default_value=1;mix.inputs[2].default_value=(.45,.36,.22,1);mix.label='Runtime paint factor';link(nt,tex.outputs[0],mix.inputs[1]);link(nt,mix.outputs[0],bs.inputs['Base Color']) else:link(nt,tex.outputs[0],bs.inputs['Base Color']) n=node(nt,'ShaderNodeTexImage');n.image=normal;nm=node(nt,'ShaderNodeNormalMap');link(nt,n.outputs[0],nm.inputs['Color']);link(nt,nm.outputs[0],bs.inputs['Normal']) n=node(nt,'ShaderNodeTexImage');n.image=orm;s=node(nt,'ShaderNodeSeparateColor');link(nt,n.outputs[0],s.inputs[0]);link(nt,s.outputs['Green'],bs.inputs['Roughness']);link(nt,s.outputs['Blue'],bs.inputs['Metallic']) # Recognised glTF occlusion socket. ng=bpy.data.node_groups.get('glTF Material Output') if not ng: ng=bpy.data.node_groups.new('glTF Material Output','ShaderNodeTree');ng.interface.new_socket(name='Occlusion',in_out='INPUT',socket_type='NodeSocketFloat') gn=node(nt,'ShaderNodeGroup');gn.node_tree=ng;link(nt,s.outputs['Red'],gn.inputs['Occlusion']) M[name]=m;print('BAKED',name,flush=True);return m for args in [('Paint','rusty_metal_03',(1,1,1),.81,0,.12),('Rubber','rubberized_track',(1,1,1),.88,0,.24),('Steel','rusty_metal_03',(1,.98,.92),.57,.70,.12),('Weapon','rusty_metal_03',(.8,.88,1),.65,.65,.14),('Interior','fabric_leather_02',(.85,.86,.73),.86,0,.18),('Canvas','fabric_leather_02',(1,.9,.66),.91,0,.28)]:bake_mat(*args) def simple(name,col,rough=.5,alpha=1,em=0): m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=(*col,1);p.inputs['Roughness'].default_value=rough;p.inputs['Alpha'].default_value=alpha if em:p.inputs['Emission Color'].default_value=(*col,1);p.inputs['Emission Strength'].default_value=em M[name]=m;return m simple('Glass',(.035,.052,.058),.13,.19);M['Glass'].surface_render_method='BLENDED';M['Glass'].use_transparent_shadow=True simple('Lamps',(.68,.72,.75),.19,1,.12) # Geometry helpers. Each piece gets real bevels and face-space UVs before joining. def finish(o,name,mat,bev=0,seg=1,smooth=False): o.name=name;o.data.materials.append(M[mat]);bpy.context.view_layer.objects.active=o if bev: mod=o.modifiers.new('Manufactured edge radius','BEVEL');mod.width=bev;mod.segments=seg bpy.ops.object.modifier_apply(modifier=mod.name) if smooth: for p in o.data.polygons:p.use_smooth=True else: mod=o.modifiers.new('Area weighted normals','WEIGHTED_NORMAL');mod.keep_sharp=True try:bpy.ops.object.modifier_apply(modifier=mod.name) except:pass # Deterministic local planar UVs, kept at useful density, shared between parts. uv=o.data.uv_layers.active or o.data.uv_layers.new(name='UVMap') for p in o.data.polygons: n=p.normal;ax=max(range(3),key=lambda a:abs(n[a]));axes=[a for a in range(3) if a!=ax] for li in p.loop_indices: v=o.data.vertices[o.data.loops[li].vertex_index].co uv.data[li].uv=(v[axes[0]]*1.8+.31,v[axes[1]]*1.8+.47) if mat=='Paint' and p.area>.025: coords=[o.data.vertices[k].co for k in p.vertices] mn=[min(c[a] for c in coords) for a in axes];mx=[max(c[a] for c in coords) for a in axes] uv.data[li].uv=tuple(.004+.992*(v[a]-mn[j])/max(mx[j]-mn[j],1e-6) for j,a in enumerate(axes)) groups.setdefault(G,[]).append(o);return o def box(name,loc,size,mat='Paint',bev=.008,rot=None,seg=1): bpy.ops.mesh.primitive_cube_add(size=1,location=loc);o=bpy.context.object;o.dimensions=size;bpy.ops.object.transform_apply(location=False,rotation=False,scale=True) if rot:o.rotation_euler=rot return finish(o,name,mat,bev,2 if name in ['Mirror case','Seat cushion','Seat back','Jerrycan','Front fascia','Cab roof'] else seg) def mesh(name,verts,faces,mat='Paint',bev=.008): me=bpy.data.meshes.new(name);me.from_pydata(verts,[],faces);me.update();o=bpy.data.objects.new(name,me);bpy.context.collection.objects.link(o);bpy.context.view_layer.objects.active=o;o.select_set(True) bm=bmesh.new();bm.from_mesh(me);bmesh.ops.recalc_face_normals(bm,faces=bm.faces);bm.to_mesh(me);bm.free() return finish(o,name,mat,bev,2) def prism(name,poly,axis,lo,hi,mat='Paint',bev=.008): axes=[a for a in range(3) if a!=axis];vs=[] for t in (lo,hi): for v in poly: p=[0,0,0];p[axis]=t;p[axes[0]]=v[0];p[axes[1]]=v[1];vs.append(p) n=len(poly);faces=[tuple(range(n-1,-1,-1)),tuple(range(n,2*n))]+[(i,(i+1)%n,(i+1)%n+n,i+n) for i in range(n)] return mesh(name,vs,faces,mat,bev) def cyl(name,loc,r,depth,mat='Steel',axis='Z',n=24,bev=.003): bpy.ops.mesh.primitive_cylinder_add(vertices=n,radius=r,depth=depth,location=loc);o=bpy.context.object if axis=='X':o.rotation_euler[1]=pi/2 if axis=='Y':o.rotation_euler[0]=pi/2 bpy.ops.object.transform_apply(location=False,rotation=True,scale=True) return finish(o,name,mat,bev,1,True) def rod(name,a,b,r,mat='Steel',n=12): a,b=Vector(a),Vector(b);o=cyl(name,(a+b)/2,r,(b-a).length,mat,n=n,bev=.0015);o.rotation_euler=(b-a).to_track_quat('Z','Y').to_euler();return o def tube(name,pts,r,mat='Steel',n=10): for a,b in zip(pts,pts[1:]):rod(name,a,b,r,mat,n) def torus(name,loc,major,minor,mat='Steel',axis='Z',seg=48,minorseg=10): bpy.ops.mesh.primitive_torus_add(major_radius=major,minor_radius=minor,major_segments=seg,minor_segments=minorseg,location=loc);o=bpy.context.object if axis=='X':o.rotation_euler[1]=pi/2 if axis=='Y':o.rotation_euler[0]=pi/2 bpy.ops.object.transform_apply(location=False,rotation=True,scale=True);return finish(o,name,mat,0,smooth=True) def bolt(loc,axis='X',r=.009,mat='Steel'):return cyl('Hex bolt',loc,r,.009,mat,axis,6,.001) def ring(name,loc,outer,inner,h,mat='Paint',n=64): x,y,z=loc;vs=[] for zz,rr in [(z-h/2,outer),(z+h/2,outer),(z-h/2,inner),(z+h/2,inner)]: vs += [(x+rr*cos(i*2*pi/n),y+rr*sin(i*2*pi/n),zz) for i in range(n)] fs=[] for i in range(n): j=(i+1)%n;fs.extend([(i,j,n+j,n+i),(2*n+i,3*n+i,3*n+j,2*n+j),(n+i,n+j,3*n+j,3*n+i),(i,2*n+i,2*n+j,j)]) return mesh(name,vs,fs,mat,.004) # Chassis, belly protection, crossmembers, suspension. box('Armoured centre floor',(0,.05,.65),(1.40,4.32,.13),'Paint',.024) box('Cab floor',(0,.11,.65),(1.94,1.98,.13),'Paint',.018) for x in [-.68,.68]:box('Box chassis rail',(x,.05,.45),(.15,4.35,.16),'Weapon',.012) for y in [-1.9,-1.15,0,1.2,2.05]:box('Crossmember',(0,y,.45),(1.54,.13,.12),'Weapon') for y in [-1.65,1.65]: cyl('Differential housing',(0,y,.46),.14,.29,'Weapon','X',32) cyl('Axle shaft',(0,y,.48),.052,1.88,'Steel','X',24) for s in [-1,1]: for dy in [-.19,.19]:rod('Wishbone',(.36*s,y+dy,.52),(.94*s,y,.46),.033,'Weapon') rod('Damper',(.81*s,y,.48),(.64*s,y-.14,.90),.035,'Steel') for k in range(6):torus('Suspension spring',(.65*s,y-.12,.58+k*.045),.065,.012,'Weapon',seg=16,minorseg=6) tube('Exhaust pipe',[(-.48,.1,.43),(-.58,.95,.44),(-.70,1.8,.50),(-.70,2.26,.53)],.027,'Steel',16) cyl('Exhaust outlet',(-.70,2.272,.53),.021,.004,'Weapon','Y',20,0) print('CHASSIS COMPLETE',flush=True) # Four wheels: swept sidewall/rim profile, chevron tread, bead locks and valve. for s,label in [(1,'L'),(-1,'R')]: for y,end in [(-1.65,'F'),(1.65,'R')]: G='Wheel_'+end+label;xc=s*.96;zc=.49 profile=[(-.165,.255),(-.176,.31),(-.165,.386),(-.126,.451),(-.09,.477),(.09,.477),(.126,.451),(.165,.386),(.176,.31),(.165,.255)] vs=[];N=64 for xx,rr in profile: for i in range(N):a=i*2*pi/N;vs.append((xc+xx,y+rr*sin(a),zc+rr*cos(a))) fs=[] for j in range(len(profile)-1): for i in range(N):q=(i+1)%N;fs.append((j*N+i,j*N+q,(j+1)*N+q,(j+1)*N+i)) o=mesh('Tyre carcass',vs,fs,'Rubber',0) for p in o.data.polygons:p.use_smooth=True for i in range(40): a=2*pi*i/40 for j in [-1,0,1]: aa=a+(j%2)*.030;rr=.4785 o=box('Tread lug',(xc+j*.094,y+rr*sin(aa),zc+rr*cos(aa)),(.086,.057,.025),'Rubber',.003,(-aa,0,j*.38),1) for rrr in [.327,.395]:torus('Moulded sidewall band',(xc+s*.158,y,zc),rrr,.0025,'Rubber','X',64,6) for ss in [-1,1]: torus('Tyre bead',(xc+ss*.167,y,zc),.273,.011,'Rubber','X',64,8) xx=xc+s*.116 cyl('Steel wheel rim',(xc,y,zc),.269,.22,'Paint','X',64,.008) cyl('Recessed dish',(xx+s*.004,y,zc),.218,.015,'Weapon','X',48,.005) cyl('Wheel dish',(xx+s*.017,y,zc),.193,.027,'Paint','X',48,.012) torus('Rim rolled lip',(xx+s*.011,y,zc),.247,.017,'Paint','X',64,8) cyl('Portal hub',(xx+s*.028,y,zc),.083,.050,'Paint','X',32,.009) cyl('Hub end',(xx+s*.057,y,zc),.047,.016,'Steel','X',24) for i in range(12): a=2*pi*i/12 bolt((xx+s*.033,y+.231*sin(a),zc+.231*cos(a)),'X',.010) for i in range(8): a=2*pi*i/8 bolt((xx+s*.040,y+.112*sin(a),zc+.112*cos(a)),'X',.013) cyl('Dish vent',(xx+s*.033,y+.164*sin(a),zc+.164*cos(a)),.017,.009,'Weapon','X',16,.002) rod('Tyre valve',(xx,y+.20,zc-.105),(xx+s*.028,y+.20,zc-.105),.006,'Rubber') G='Body' print('WHEELS COMPLETE',flush=True) # Side armour contours have true wheel-arch cutouts, not black circles over boxes. for s in [-1,1]: lo,hi=sorted([s*.98,s*1.055]) # Centre tub with chamfered sills. box('Lower rocker armour',(s*.967,.055,.615),(.20,1.96,.15),'Paint',.015) prism('Armoured sill',[(-1.01,.76),(-.84,.61),(.89,.61),(1.08,.83),(1.03,1.25),(-1.01,1.25)],0,lo,hi,'Paint',.018) # Arched front and rear fender bands, with inner liner and rolled flange. for yy in [-1.65,1.65]: pts=[] for i in range(17): a=pi*i/16;pts.append((yy+.565*cos(a),.52+.565*sin(a))) outline=[(yy+.63,.78),(yy+.63,1.23),(yy-.63,1.23),(yy-.63,.78)]+list(reversed(pts)) # Correct boundary traces: top rectangle then arch from left to right. outline=[(yy-.63,.77),(yy-.63,1.22),(yy+.63,1.22),(yy+.63,.77)]+pts prism('Shaped fender',outline,0,min(s*.92,s*1.075),max(s*.92,s*1.075),'Paint',.016) arc=[(s*1.08,yy+.566*cos(pi*i/24),.52+.566*sin(pi*i/24)) for i in range(25)] tube('Fender folded lip',arc,.018,'Paint') # Solid inner wheelhouse closes the sightline through the arch. inner=[(yy-.565,.40),(yy+.565,.40)]+[(yy+.565*cos(pi*i/24),.52+.565*sin(pi*i/24)) for i in range(25)] prism('Wheelhouse inner wall',inner,0,min(s*.74,s*.77),max(s*.74,s*.77),'Rubber',.004) # dark wheelhouse follows arch inside skin for i in range(20): a=(i+.5)*pi/20 box('Wheel well liner',(s*.94,yy+.548*cos(a),.52+.548*sin(a)),(.23,.095,.025),'Rubber',.004,(a-pi/2,0,0)) # doors: lower plate with generous radii; top window aperture built as a ring. for ya,yb in [(-.79,.10),(.13,1.02)]: x=s*1.015;cy=(ya+yb)/2 path=[(s*1.057,ya,.80),(s*1.057,ya+.08,.704),(s*1.057,yb-.08,.704),(s*1.057,yb,.80),(s*1.057,yb,1.885)] tube('Door perimeter seal',path,.005,'Rubber',8) rod('Door front seal',(s*1.057,ya,.80),(s*1.057,ya,1.88),.005,'Rubber',8) prism('Ballistic door lower',[(ya,.79),(ya+.08,.70),(yb-.08,.70),(yb,.78),(yb,1.393),(ya,1.393)],0,min(x-.039,x+.039),max(x-.039,x+.039),'Paint',.018) box('Door front stile',(x,ya+.0625,1.61),(.080,.125,.57),'Paint',.012) box('Door rear stile',(x,yb-.0625,1.61),(.080,.125,.57),'Paint',.012) box('Door top rail',(x,cy,1.873),(.080,yb-ya,.095),'Paint',.012) # Thick armoured window surround and black gasket, glass recessed 22 mm. wy=cy;w=.55;z=1.61;h=.375 for zz in [z-h/2,z+h/2]:box('Window armour frame',(s*1.069,wy,zz),(.065,w+.12,.057),'Paint',.009) for yyy in [wy-w/2-.032,wy+w/2+.032]:box('Window armour frame',(s*1.069,yyy,z),(.065,.06,h),'Paint',.009) for zz in [z-h/2+.032,z+h/2-.032]:box('Window elastomer seal',(s*1.072,wy,zz),(.020,w,.017),'Rubber',.004) for yyy in [wy-w/2+.010,wy+w/2-.010]:box('Window elastomer seal',(s*1.072,yyy,z),(.020,.020,h-.05),'Rubber',.004) box('Thick ballistic glass',(s*1.052,wy,z),(.037,w-.02,h-.070),'Glass',.008) for yyy in [ya+.06,yb-.06]: for zz in [.85,1.30,1.86]:bolt((s*1.071,yyy,zz),'X',.010,'Steel') for yyy in [wy-.24,wy,wy+.24]: for zz in [z-h/2,z+h/2]:bolt((s*1.107,yyy,zz),'X',.008,'Steel') # pin hinges, exterior pull, recessed latch and inside handle for zz in [1.03,1.28]: box('Door hinge leaf',(s*1.074,ya+.025,zz),(.04,.105,.053),'Paint',.006) cyl('Hinge pin',(s*1.103,ya+.019,zz),.017,.09,'Steel','Z',12) box('Handle recess',(s*1.062,yb-.19,1.23),(.019,.22,.042),'Rubber',.011) rod('Door pull',(s*1.091,yb-.275,1.243),(s*1.091,yb-.12,1.243),.012,'Steel') for q in [yb-.275,yb-.12]:rod('Pull standoff',(s*1.052,q,1.24),(s*1.091,q,1.24),.011,'Steel') box('Door latch plate',(s*1.065,yb-.22,.83),(.023,.093,.11),'Weapon',.016) tube('Latch lever',[(s*1.09,yb-.25,.85),(s*1.09,yb-.25,.80),(s*1.09,yb-.19,.80),(s*1.09,yb-.19,.85)],.008,'Steel') # A/B/C pillars for yy in [-.84,.115,1.07]:box('Cab structural pillar',(s*.996,yy,1.36),(.10,.100,1.10),'Paint',.010) # Rear sloping armoured cargo cap prism('Sloped rear side',[(1.10,1.22),(2.29,1.22),(2.30,1.49),(2.14,1.61),(1.10,1.94)],0,min(s*.96,s*1.025),max(s*.96,s*1.025),'Paint',.018) # Rear ventilation panel inset, horizontal louvres box('Rear vent gasket',(s*1.045,1.73,1.31),(.026,.91,.155),'Rubber',.008) for zz in [1.262,1.288,1.314,1.340,1.366]:box('Rear cooling louvre',(s*1.063,1.73,zz),(.015,.85,.008),'Steel',.002) for yy in [1.29,2.17]: for zz in [1.255,1.365]:bolt((s*1.079,yy,zz),'X',.009) # fuel filler cyl('Filler flange',(s*1.070,1.12,1.12),.090,.030,'Weapon','X',32) cyl('Fuel cap',(s*1.090,1.12,1.12),.065,.022,'Steel','X',24) box('Fuel cap grip',(s*1.110,1.12,1.12),(.016,.076,.018),'Weapon',.004) # Lower armour fasteners. for yy in [-.80,-.48,-.16,.16,.48,.80]:bolt((s*1.052,yy,.656),'X',.009,'Steel') # Roof plate with real hatch opening via boolean, then four side drip strips. roof=box('Cab roof',(0,.19,1.953),(2.06,1.88,.085),'Paint',.022) bpy.ops.mesh.primitive_cylinder_add(vertices=64,radius=.475,depth=.3,location=(0,.22,1.95));cut=bpy.context.object bpy.context.view_layer.objects.active=roof;mod=roof.modifiers.new('Open gunner hatch','BOOLEAN');mod.operation='DIFFERENCE';mod.object=cut;bpy.ops.object.modifier_apply(modifier=mod.name);bpy.data.objects.remove(cut,do_unlink=True) for x in [-1.035,1.035]:box('Roof rain gutter',(x,.18,1.925),(.038,1.92,.052),'Paint',.008) # Rear top slope and end bulkhead. prism('Cargo roof slope',[(1.11,1.90),(2.31,1.51),(2.31,1.57),(1.11,1.96)],0,-.98,.98,'Paint',.015) box('Rear bulkhead',(0,2.295,1.095),(1.99,.085,.77),'Paint',.015) box('Cargo access door',(0,2.348,1.30),(1.43,.043,.46),'Paint',.017) for xx in [-.67,.67]: for zz in [1.11,1.48]:bolt((xx,2.378,zz),'Y',.011) box('Cargo latch',(0,2.387,1.25),(.13,.03,.09),'Steel',.007) for x in [-.48,.48]: box('Jerrycan support',(x,2.395,.94),(.39,.10,.13),'Weapon',.008) box('Jerrycan',(x,2.395,1.13),(.29,.15,.36),'Paint',.027) for a in [-1,1]:rod('Jerrycan pressed rib',(x-.10,2.483,1.13+a*.12),(x+.10,2.483,1.13-a*.12),.012,'Paint') tube('Jerrycan handle',[(x-.06,2.39,1.31),(x-.06,2.39,1.355),(x+.06,2.39,1.355),(x+.06,2.39,1.31)],.016,'Paint') box('Can retention strap',(x,2.491,1.12),(.03,.014,.38),'Weapon',.003) # Hood loft, broad flat centre with sloping shoulders. Front is -Y. sections=[(-2.30,1.22,.96),(-2.13,1.30,1.015),(-1.18,1.405,1.015),(-.84,1.41,1.00)] vs=[] for yy,zz,w in sections:vs += [(-w,yy,zz-.16),(-w,yy,zz-.045),(-w+.18,yy,zz), (w-.18,yy,zz),(w,yy,zz-.045),(w,yy,zz-.16)] fs=[tuple(range(5,-1,-1)),tuple(range(18,24))] for j in range(3): for i in range(6):fs.append((j*6+i,j*6+(i+1)%6,(j+1)*6+(i+1)%6,(j+1)*6+i)) mesh('Pressed hood',vs,fs,'Paint',.020) # Hood grille recess with eleven slats. box('Hood vent recess',(0,-1.53,1.366),(.64,.65,.010),'Rubber',.009,(.110,0,0)) for i in range(11):box('Hood vent slat',(0,-1.83+i*.056,1.341+i*.0062),(.625,.018,.021),'Paint',.004,(.110,0,0)) for s in [-1,1]: # hood perimeter crease, hold-down catch and lifting loops rod('Pressed fender crease',(s*1.054,-2.24,1.20),(s*1.065,-1.92,1.16),.010,'Paint',16) rod('Pressed fender crease',(s*1.065,-1.92,1.16),(s*1.065,-1.13,1.16),.010,'Paint',16) rod('Hood shoulder rib',(s*.77,-2.16,1.29),(s*.82,-.97,1.403),.015,'Paint') torus('Hood lift eye',(s*.52,-1.08,1.435),.043,.011,'Steel','Y',24,8) box('Bonnet catch base',(s*1.032,-1.07,1.22),(.025,.065,.19),'Weapon',.009,(-.28,0,0)) rod('Bonnet catch lever',(s*1.058,-1.09,1.16),(s*1.058,-1.045,1.31),.016,'Steel') # Front fascia seven vertical radiator slots between two round headlamps. box('Front fascia',(0,-2.301,1.075),(2.04,.075,.36),'Paint',.019) box('Radiator recess',(0,-2.346,1.085),(1.04,.022,.27),'Weapon',.015) grille=box('Stamped grille',(0,-2.370,1.085),(1.09,.032,.30),'Paint',.008) for i in range(7): cutter=box('Slot cutter',(-.42+i*.14,-2.370,1.085),(.076,.14,.237),'Weapon',.032,seg=6) bpy.context.view_layer.objects.active=grille;mod=grille.modifiers.new('Stamped ventilation aperture','BOOLEAN');mod.operation='DIFFERENCE';mod.object=cutter;bpy.ops.object.modifier_apply(modifier=mod.name) groups[G].remove(cutter);bpy.data.objects.remove(cutter,do_unlink=True) for s in [-1,1]: cyl('Headlamp bezel',(s*.674,-2.353,1.075),.137,.050,'Steel','Y',48,.006) cyl('Headlamp reflector',(s*.674,-2.384,1.075),.110,.019,'Lamps','Y',48,.006) torus('Headlamp inner chrome ring',(s*.674,-2.397,1.075),.096,.005,'Steel','Y',48,8) cyl('Headlamp bulb',(s*.674,-2.400,1.075),.026,.009,'Lamps','Y',24,.003) # lens moulding lines in the same emissive lamp material for xoff in [-.054,-.027,0,.027,.054]:rod('Headlamp lens flute',(s*.674+xoff,-2.397,1.004),(s*.674+xoff,-2.397,1.146),.002,'Lamps',6) cyl('Front signal surround',(s*.919,-2.343,1.17),.062,.029,'Weapon','Y',32) cyl('Front signal',(s*.919,-2.365,1.17),.047,.019,'Lamps','Y',32) # round rear lamps share the material, vertex tint handled through baked lamp tile later cyl('Tail housing',(s*.85,2.36,1.09),.081,.04,'Weapon','Y',32) cyl('Tail lens',(s*.85,2.389,1.09),.062,.024,'Lamps','Y',32) box('Rear mud flap',(s*.92,2.14,.48),(.33,.033,.43),'Rubber',.009) # Windscreen: divided panes inset into true angled surround. def windshield_piece(name,x,z,w,h,mat,depth=.043): y=-.84+(z-1.395)*.18 return box(name,(x,y,z),(w,depth,h),mat,.008,(-.178,0,0)) for x in [-.493,.493]: for xx in [x-.450,x+.450]:windshield_piece('Windshield side gasket',xx,1.669,.035,.515,'Rubber') for zz in [1.425,1.913]:windshield_piece('Windshield edge gasket',x,zz,.92,.031,'Rubber') windshield_piece('Ballistic windscreen',x,1.669,.865,.485,'Glass',.044) for x in [-.982,0,.982]:windshield_piece('Windscreen upright',x,1.67,.066,.58,'Paint',.077) for z in [1.39,1.946]:windshield_piece('Windscreen cross rail',0,z,2.035,.058,'Paint',.08) for s in [-1,1]: tube('Wiper arm',[(s*.75,-.852,1.405),(s*.49,-.832,1.555),(s*.31,-.813,1.75)],.009,'Weapon') rod('Wiper blade',(s*.18,-.816,1.77),(s*.57,-.86,1.54),.014,'Rubber') # Mirror support stays tucked inside the stated 2.30 m width. tube('Mirror bracket',[(s*1.017,-.74,1.68),(s*1.125,-.82,1.66),(s*1.125,-.82,1.39),(s*1.024,-.73,1.38)],.012,'Weapon') box('Mirror case',(s*1.1185,-.832,1.55),(.063,.135,.30),'Weapon',.027) box('Mirror face',(s*1.116,-.754,1.55),(.049,.008,.255),'Steel',.015) # Snorkel on vehicle right, antennas on rear. cyl('Snorkel riser',(-.945,-.78,1.73),.049,.69,'Paint','Z',32,.009) cyl('Snorkel cap',(-.945,-.78,2.065),.075,.051,'Paint','Z',32,.012) for y in [1.80]: cyl('Antenna base',(.84,y,1.73),.033,.10,'Weapon','Z',20) rod('Short whip',(.84,y,1.77),(.84,y,2.12),.006,'Weapon') # Bumper, brushguard, tow loops, winch fairlead. box('Front bumper',(0,-2.390,.785),(2.08,.16,.135),'Weapon',.018) box('Rear bumper',(0,2.397,.705),(2.12,.14,.145),'Weapon',.014) tube('Brushguard outer',[(-1.04,-2.457,.86),(-1.04,-2.457,1.285),(-.96,-2.457,1.34),(.96,-2.457,1.34),(1.04,-2.457,1.285),(1.04,-2.457,.86)],.033,'Weapon',16) rod('Brushguard bottom',(-1.04,-2.457,.875),(1.04,-2.457,.875),.023,'Weapon',16) for x in [-.46,.46]:rod('Guard upright',(x,-2.457,.79),(x,-2.457,1.34),.022,'Weapon',16) box('Winch frame',(0,-2.413,.745),(.50,.10,.16),'Weapon',.014) cyl('Winch drum',(0,-2.427,.744),.061,.35,'Steel','X',32) for x in [-.72,.72]: box('Tow bracket',(x,-2.445,.727),(.065,.072,.115),'Paint',.007) torus('Front shackle',(x,-2.462,.665),.047,.012,'Steel','Y',24,8) torus('Rear shackle',(x,2.462,.646),.045,.012,'Steel','Y',24,8) # Cab interior: four independent bolstered seats, transmission tunnel, dash and controls. box('Transmission tunnel',(0,-.04,.91),(.60,2.14,.40),'Interior',.07) for s in [-1,1]: for yy in [-.28,.66]: box('Seat pedestal',(s*.65,yy,.83),(.37,.40,.23),'Weapon',.019) box('Seat cushion',(s*.65,yy,1.00),(.46,.45,.13),'Canvas',.046) box('Seat back',(s*.65,yy+.20,1.26),(.46,.12,.51),'Canvas',.044,(-.10,0,0)) box('Seat headrest',(s*.65,yy+.225,1.55),(.25,.095,.15),'Canvas',.025) for xx in [s*.65-.19,s*.65+.19]:box('Seat bolster',(xx,yy+.13,1.27),(.073,.15,.40),'Interior',.027,(-.10,0,0)) rod('Seat belt',(s*.86,yy+.14,1.47),(s*.48,yy-.15,1.04),.019,'Rubber') box('Dashboard',(0,-.65,1.27),(1.82,.29,.22),'Interior',.037) box('Instrument binnacle',(.53,-.484,1.335),(.46,.05,.19),'Weapon',.019) for xx,rr in [(.40,.045),(.52,.055),(.66,.031)]: cyl('Instrument bezel',(xx,-.447,1.35),rr,.01,'Steel','Y',24) cyl('Instrument black dial',(xx,-.438,1.35),rr*.81,.007,'Rubber','Y',24) rod('Instrument needle',(xx,-.432,1.35),(xx+.017,-.432,1.37),.002,'Lamps',6) for xx in [-.68,-.42,-.16,.17]: box('Dash vent',(xx,-.484,1.31),(.12,.012,.075),'Weapon',.006) for z in [1.29,1.31,1.33]:box('Vent vane',(xx,-.474,z),(.10,.008,.004),'Steel',.001) rod('Steering column',(.57,-.61,1.14),(.57,-.315,1.30),.027,'Weapon') G='SteeringWheel';torus('Steering rim',(.57,-.303,1.31),.163,.019,'Rubber','Y',48,10) cyl('Steering hub',(.57,-.303,1.31),.044,.05,'Weapon','Y',24) for a in [pi/2,pi/2+2*pi/3,pi/2+4*pi/3]:rod('Wheel spoke',(.57,-.30,1.31),(.57+.145*cos(a),-.30,1.31+.145*sin(a)),.011,'Weapon') G='Body' for x,y in [(.15,-.30),(.27,-.12)]: rod('Gear lever',(x,y,1.08),(x,y-.07,1.29),.011,'Steel');cyl('Gear knob',(x,y-.07,1.30),.026,.04,'Rubber','Z',16,.008) box('Radio',(0,-.53,1.48),(.34,.18,.18),'Weapon',.012) for xx in [-.10,.10]:cyl('Radio knob',(xx,-.419,1.48),.022,.028,'Rubber','Y',16) # Turret ring and open topped three-sided ballistic shield. G='Turret';ring('Bearing race',(0,.22,2.015),.60,.476,.062,'Weapon') ring('Gunner ring',(0,.22,2.062),.57,.48,.05,'Paint') for i in range(16):a=i*2*pi/16;bolt((.545*cos(a),.22+.545*sin(a),2.093),'Z',.011,'Steel') for s in [-1,1]: prism('Turret side shield',[(-.32,2.13),(-.47,2.57),(.77,2.57),(.70,2.13)],0,min(s*.49,s*.535),max(s*.49,s*.535),'Paint',.012) for y in [-.34,.10,.62]: for z in [2.18,2.52]:bolt((s*.542,y,z),'X',.009,'Steel') box('Turret rear shield',(0,.748,2.35),(1.02,.045,.43),'Paint',.011) # Forward shield divided around gun slot, sloped to deflect rounds. for s in [-1,1]: prism('Forward ballistic shield',[(s*.085,2.35),(s*.085,2.60),(s*.48,2.60),(s*.56,2.16),(s*.14,2.16)],1,-.438,-.393,'Paint',.010) for shield in [o for o in groups['Turret'] if o.name.startswith('Forward ballistic shield')]: for v in shield.data.vertices:v.co.y += (v.co.z-2.16)*.18 box('Shield lower bridge',(0,-.416,2.18),(.38,.048,.07),'Paint',.008) cyl('Weapon pedestal',(0,-.19,2.22),.053,.28,'Weapon','Z',24) box('Elevation fork',(0,-.20,2.347),(.20,.13,.105),'Weapon',.011) G='MG';pivot=(0,-.20,2.398) box('M2 receiver',(0,-.18,2.422),(.142,.49,.116),'Weapon',.012) box('Receiver top cover',(0,-.19,2.491),(.159,.34,.034),'Weapon',.006) box('Feed tray',(.092,-.19,2.437),(.066,.20,.060),'Steel',.006) cyl('Barrel jacket',(0,-.554,2.447),.041,.27,'Weapon','Y',32,.004) cyl('Heavy barrel',(0,-1.019,2.447),.021,.68,'Weapon','Y',32,.002) cyl('Muzzle collar',(0,-1.374,2.447),.028,.065,'Weapon','Y',24,.002) cyl('Muzzle bore',(0,-1.409,2.447),.014,.003,'Rubber','Y',24,0) for yy in [-.48,-.54,-.60]: for s in [-1,1]:cyl('Jacket cooling port',(s*.040,yy,2.448),.012,.004,'Rubber','X',12,0) box('Rear sight',(0,-.06,2.524),(.046,.035,.049),'Weapon',.005) box('Front sight',(0,-.664,2.483),(.020,.032,.073),'Weapon',.003) for s in [-1,1]: rod('Spade grip support',(s*.035,.09,2.41),(s*.11,.15,2.41),.011,'Weapon') cyl('Spade handle',(s*.11,.15,2.424),.017,.11,'Rubber','Z',16,.006) box('Ammo box mount',(.27,-.13,2.337),(.33,.20,.040),'Weapon',.006) box('Ammunition box',(.31,-.13,2.442),(.21,.28,.19),'Weapon',.009) box('Ammo lid',(.31,-.13,2.541),(.23,.30,.027),'Weapon',.005) for i in range(7):cyl('Linked cartridge',(.09+i*.021,-.20,2.477),.008,.085,'Steel','Y',10,.001) G='Body' print('GEOMETRY COMPLETE',flush=True) # Consolidate rigid assemblies; transforms are baked, origins at game pivots. origins={'Body':(0,0,0),'Turret':(0,.22,2.02),'MG':pivot,'SteeringWheel':(.57,-.303,1.31)} for s,l in [(1,'L'),(-1,'R')]: for y,e in [(-1.65,'F'),(1.65,'R')]:origins['Wheel_'+e+l]=(s*.96,y,.49) objects={} for name,obs in groups.items(): bpy.ops.object.select_all(action='DESELECT') for o in obs:o.select_set(True) bpy.context.view_layer.objects.active=obs[0];bpy.ops.object.join();o=bpy.context.object;o.name=name bpy.ops.object.transform_apply(location=False,rotation=True,scale=True) sc.cursor.location=origins[name];bpy.ops.object.origin_set(type='ORIGIN_CURSOR') # Triangulate now, remove any geometrically zero-area slivers. bm=bmesh.new();bm.from_mesh(o.data);bmesh.ops.triangulate(bm,faces=list(bm.faces));bad=[f for f in bm.faces if f.calc_area()<1e-12] if bad:bmesh.ops.delete(bm,geom=bad,context='FACES') bm.to_mesh(o.data);bm.free();objects[name]=o # Collapse only when necessary: target the top of the hero-asset budget. count=sum(len(o.data.polygons) for o in objects.values()) if count>108000: ratio=104000/count for o in objects.values(): bpy.context.view_layer.objects.active=o dec=o.modifiers.new('Game topology budget','DECIMATE');dec.ratio=ratio;dec.use_collapse_triangulate=True bpy.ops.object.modifier_apply(modifier=dec.name) bm=bmesh.new();bm.from_mesh(o.data);bmesh.ops.triangulate(bm,faces=list(bm.faces)) bad=[f for f in bm.faces if f.calc_area()<1e-12] if bad:bmesh.ops.delete(bm,geom=bad,context='FACES') bm.to_mesh(o.data);bm.free() for name,o in objects.items(): if name.startswith('Wheel_'): for v in o.data.vertices: if v.co.z+o.location.z<0:v.co.z=-o.location.z mg=objects['MG'];mw=mg.matrix_world.copy();mg.parent=objects['Turret'];mg.matrix_world=mw # Empty attachment nodes, local Blender coordinates converted by exporter. sockets={'Seat_Driver':(.65,-.27,1.08),'Door_L':(1.04,-.76,1.13),'Door_R':(-1.04,-.76,1.13),'Exhaust':(-.70,2.26,.53),'Light_Head_L':(.674,-2.397,1.075),'Light_Head_R':(-.674,-2.397,1.075),'Light_Tail_L':(.85,2.411,1.09),'Light_Tail_R':(-.85,2.411,1.09),'Troop_1':(-.65,-.28,1.08),'Troop_2':(.65,.66,1.08),'Troop_3':(-.65,.66,1.08),'Muzzle':(0,-1.411,2.447)} for name,loc in sockets.items(): o=bpy.data.objects.new(name,None);bpy.context.collection.objects.link(o);o.location=loc parent=mg if name=='Muzzle' else objects['Body'];o.parent=parent;o.location=parent.matrix_world.inverted() @ Vector(loc);objects[name]=o # Lamp atlas: same one material, white headlights / amber turns / red tail lenses. # UV positions decide lens colour, keeping a single glTF Lamps material. im=bpy.data.images.new('Lamps_base',width=128,height=128,alpha=False) a=np.ones((128,128,4),dtype=np.float32);a[:,:,:3]=(.68,.72,.75);a[:,43:85,:3]=(1,.30,.015);a[:,85:,:3]=(.48,.009,.004);im.pixels.foreach_set(a.ravel());im.filepath_raw=os.path.join(TEX,'Lamps_base.png');im.file_format='PNG';im.save() nt=M['Lamps'].node_tree;bs=nt.nodes.get('Principled BSDF');it=node(nt,'ShaderNodeTexImage');it.image=im;link(nt,it.outputs[0],bs.inputs['Base Color']);link(nt,it.outputs[0],bs.inputs['Emission Color']) body=objects['Body'];body.data.update();uv=body.data.uv_layers.active for p in body.data.polygons: if body.data.materials[p.material_index].name=='Lamps': c=body.matrix_world@p.center u=.83 if c.y>2 else (.50 if abs(c.x)>.82 else .16) for li in p.loop_indices:uv.data[li].uv=(u,.5) # Flatten the two optical materials through the same Cycles bake path. # These have no photographic macrotexture; lens relief is actual geometry. for special in ['Glass','Lamps']: m=M[special];nt=m.node_tree;bs=nt.nodes.get('Principled BSDF');out=nt.nodes.get('Material Output') bpy.ops.mesh.primitive_plane_add(size=1,location=(0,0,-10));pl=bpy.context.object;pl.data.materials.append(m) source=bs.inputs['Base Color'].links[0].from_socket if bs.inputs['Base Color'].is_linked else None em=node(nt,'ShaderNodeEmission') if source:link(nt,source,em.inputs['Color']) else:em.inputs['Color'].default_value=bs.inputs['Base Color'].default_value dst=node(nt,'ShaderNodeTexImage');results={} for suffix,kind in [('base','EMIT'),('normal','NORMAL'),('ORM','EMIT')]: im=bpy.data.images.new(special+'_'+suffix+'_baked',width=128,height=128,alpha=False) if suffix!='base':im.colorspace_settings.name='Non-Color' dst.image=im;nt.nodes.active=dst if suffix=='normal':link(nt,bs.outputs[0],out.inputs[0]) else: if suffix=='ORM': for lk in list(em.inputs['Color'].links):nt.links.remove(lk) em.inputs['Color'].default_value=(1,bs.inputs['Roughness'].default_value,0,1) link(nt,em.outputs[0],out.inputs[0]) bpy.ops.object.bake(type=kind);im.filepath_raw=os.path.join(TEX,special+'_'+suffix+'.png');im.file_format='PNG';im.save();results[suffix]=im bpy.data.objects.remove(pl,do_unlink=True);nt.nodes.remove(em);nt.nodes.remove(dst);link(nt,bs.outputs[0],out.inputs[0]) it=node(nt,'ShaderNodeTexImage');it.image=results['base'];link(nt,it.outputs[0],bs.inputs['Base Color']) if special=='Lamps':link(nt,it.outputs[0],bs.inputs['Emission Color']) nn=node(nt,'ShaderNodeTexImage');nn.image=results['normal'];nm=node(nt,'ShaderNodeNormalMap');link(nt,nn.outputs[0],nm.inputs['Color']);link(nt,nm.outputs[0],bs.inputs['Normal']) oi=node(nt,'ShaderNodeTexImage');oi.image=results['ORM'];sep=node(nt,'ShaderNodeSeparateColor');link(nt,oi.outputs[0],sep.inputs[0]);link(nt,sep.outputs['Green'],bs.inputs['Roughness']);link(nt,sep.outputs['Blue'],bs.inputs['Metallic']) paints=[{'name':'Desert tan','linear_rgb':[.45,.36,.22]},{'name':'Olive drab','linear_rgb':[.16,.18,.095]},{'name':'NATO green','linear_rgb':[.085,.13,.075]},{'name':'Field grey','linear_rgb':[.20,.235,.21]},{'name':'Winter white','linear_rgb':[.78,.80,.77]},{'name':'Dark green-black','linear_rgb':[.035,.050,.033]}] def paint_set(c): for n in M['Paint'].node_tree.nodes: if n.type=='MIX_RGB':n.inputs[2].default_value=(*c,1) paint_set(paints[0]['linear_rgb']) # Save node manifest in glTF coordinates, including transformed world bounds. bpy.context.view_layer.update() def game(v):return [round(v[0],6),round(v[2],6),round(-v[1],6)] pts=[o.matrix_world@v.co for o in objects.values() if o.type=='MESH' for v in o.data.vertices] lo=[min(game(v)[i] for v in pts) for i in range(3)];hi=[max(game(v)[i] for v in pts) for i in range(3)] tri=sum(len(o.data.polygons) for o in objects.values() if o.type=='MESH') manifest={'contract':'Forge Garage v2','units':'metres','front':'+Z','up':'+Y','left':'+X','bounds':{'min':lo,'max':hi,'size':[round(hi[i]-lo[i],6) for i in range(3)]},'triangles':tri,'paints':paints,'nodes':[{'name':n,'type':'mesh' if o.type=='MESH' else 'empty','world_position':game(o.matrix_world.translation),'parent':o.parent.name if o.parent else None} for n,o in objects.items()]} with open(os.path.join(ROOT,'nodes.json'),'w') as f:json.dump(manifest,f,indent=2) bpy.ops.object.select_all(action='DESELECT') for o in objects.values():o.select_set(True) bpy.ops.export_scene.gltf(filepath=os.path.join(ROOT,'humvee-armored.glb'),export_format='GLB',use_selection=True,export_yup=True,export_apply=True,export_cameras=False,export_lights=False,export_image_format='AUTO',export_materials='EXPORT') # Preserve the neutral image and serialize the engine recolour factor explicitly. import struct path=os.path.join(ROOT,'humvee-armored.glb') raw=open(path,'rb').read();jlen=struct.unpack_from('