#!/usr/bin/env python3 """ build_railgun-battleship.py Standalone Blender 5.2 generator for the 1100m Spinal Railgun Battleship (railgun-battleship). Builds complete high-detail hard-surface geometry matching sheet.jpg, downloads/loads Poly Haven CC0 textures, mixes procedural weathering/panel/trim nodes and bakes them with Cycles GPU to game-weight textures (<=1024px base/normal, <=512px ORM), verifies 30-deg moving-part articulations, exports railgun-battleship.glb + nodes.json, and renders final.png, side.png, clay.png, paints.png. """ import os import sys import json import math import struct import urllib.request import bpy import bmesh from mathutils import Vector, Matrix, Euler # --------------------------------------------------------------------------- # Paths & Configuration # --------------------------------------------------------------------------- SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__)) TEX_PH_DIR = os.path.join(SCRIPT_DIR, "textures_ph") TEX_BAKE_DIR = os.path.join(SCRIPT_DIR, "textures_baked") os.makedirs(TEX_PH_DIR, exist_ok=True) os.makedirs(TEX_BAKE_DIR, exist_ok=True) POLYHAVEN_IDS = [ "metal_plate", "metal_plate_02", "rusty_metal_02", "corrugated_iron_02", ] PAINTS = [ {"name": "Bone White (Default)", "color": [0.70, 0.68, 0.62]}, {"name": "Naval Grey", "color": [0.46, 0.50, 0.54]}, {"name": "Gunmetal", "color": [0.24, 0.26, 0.29]}, {"name": "Olive Drab", "color": [0.33, 0.37, 0.26]}, {"name": "Desert Sand", "color": [0.68, 0.58, 0.44]}, {"name": "Deep Navy", "color": [0.16, 0.22, 0.34]}, ] # --------------------------------------------------------------------------- # Coordinate Conversion Helpers # Export Contract (glTF Y-up, metres): # Nose = +Z (Z in [-550.0, +550.0], length 1100.0 m) # Up = +Y (Y in [ -45.0, +95.0], height 140.0 m) # Left = +X (X in [ -80.0, +80.0], width 160.0 m) # Blender native Z-up with export_yup=True maps: # X_gltf = X_bl # Y_gltf = Z_bl # Z_gltf = -Y_bl # Therefore: (X_bl, Y_bl, Z_bl) = (x_gltf, -z_gltf, y_gltf) # --------------------------------------------------------------------------- def g2b(x, y, z): return Vector((float(x), float(-z), float(y))) def b2g_tuple(v): return [round(float(v[0]), 4), round(float(v[2]), 4), round(float(-v[1]), 4)] # --------------------------------------------------------------------------- # Step 1: Download / Verify Poly Haven CC0 Textures # --------------------------------------------------------------------------- def ensure_polyhaven_textures(): for ph_id in POLYHAVEN_IDS: for m in ("diff", "nor_gl", "arm"): fname = f"{ph_id}_{m}_1k.jpg" fpath = os.path.join(TEX_PH_DIR, fname) if not os.path.exists(fpath) or os.path.getsize(fpath) < 1000: url = f"https://dl.polyhaven.org/file/ph-assets/Textures/jpg/1k/{ph_id}/{fname}" print(f"[PolyHaven] Downloading {url} ...") urllib.request.urlretrieve(url, fpath) print("[PolyHaven] All CC0 source maps ready.") # --------------------------------------------------------------------------- # Step 2: Scene Reset & GPU Cycles Configuration # --------------------------------------------------------------------------- def reset_scene(): bpy.ops.wm.read_factory_settings(use_empty=True) scene = bpy.context.scene scene.unit_settings.system = 'METRIC' scene.unit_settings.scale_length = 1.0 scene.render.engine = 'CYCLES' prefs = bpy.context.preferences cprefs = prefs.addons['cycles'].preferences for dev_type in ('OPTIX', 'CUDA', 'HIP', 'ONEAPI'): try: cprefs.compute_device_type = dev_type cprefs.get_devices() devs = [d for d in cprefs.devices if d.type != 'CPU'] if devs: for d in cprefs.devices: d.use = (d.type != 'CPU') scene.cycles.device = 'GPU' print(f"[Cycles] Enabled GPU device backend: {dev_type} ({[d.name for d in devs]})") break except Exception: pass scene.cycles.use_adaptive_sampling = True scene.cycles.adaptive_threshold = 0.02 return scene # --------------------------------------------------------------------------- # Step 3: Cycles Texture Baking (Poly Haven + Procedural Nodes -> Baked Maps) # Strictly obeys GAME WEIGHT: # - BaseColor & Normal maps <= 1024x1024 (saved as JPEG so GLB stays < 10 MB) # - ORM (Occlusion/Roughness/Metallic) maps <= 512x512 # - Paint baseColor texture holds ONLY light neutral detail (near-white 0.82..0.97 # with panel lines, grey grime, engine scorch, micro-meteorite pitting & chipped edges) # while Paint.baseColorFactor = [0.70, 0.68, 0.62]. # --------------------------------------------------------------------------- def build_and_bake_textures(scene): print("[Bake] Constructing Cycles procedural + Poly Haven materials for baking...") ph_imgs = {} for ph_id in POLYHAVEN_IDS: ph_imgs[ph_id] = {} for m in ("diff", "nor_gl", "arm"): p = os.path.join(TEX_PH_DIR, f"{ph_id}_{m}_1k.jpg") img = bpy.data.images.load(p, check_existing=True) img.colorspace_settings.name = 'sRGB' if m == 'diff' else 'Non-Color' ph_imgs[ph_id][m] = img bm = bmesh.new() v0 = bm.verts.new((-1, -1, 0)) v1 = bm.verts.new(( 1, -1, 0)) v2 = bm.verts.new(( 1, 1, 0)) v3 = bm.verts.new((-1, 1, 0)) f = bm.faces.new((v0, v1, v2, v3)) uv_layer = bm.loops.layers.uv.new("UVMap") for loop, uv in zip(f.loops, [(0, 0), (1, 0), (1, 1), (0, 1)]): loop[uv_layer].uv = uv bake_mesh = bpy.data.meshes.new("_BakePlaneMesh") bm.to_mesh(bake_mesh) bm.free() bake_obj = bpy.data.objects.new("_BakePlane", bake_mesh) scene.collection.objects.link(bake_obj) bpy.context.view_layer.objects.active = bake_obj bake_obj.select_set(True) old_samples = scene.cycles.samples scene.cycles.samples = 16 scene.render.bake.margin = 4 def bake_pass_to_file(mat, bake_type, res, out_path, is_color=True): img = bpy.data.images.new("_BakeTarget", width=res, height=res, alpha=False) img.colorspace_settings.name = 'sRGB' if is_color else 'Non-Color' nodes = mat.node_tree.nodes tnode = nodes.new("ShaderNodeTexImage") tnode.image = img for n in nodes: n.select = False tnode.select = True nodes.active = tnode bake_obj.data.materials.clear() bake_obj.data.materials.append(mat) if bake_type == 'DIFFUSE': scene.render.bake.use_pass_direct = False scene.render.bake.use_pass_indirect = False scene.render.bake.use_pass_color = True bpy.ops.object.bake(type=bake_type) scene.render.image_settings.file_format = 'JPEG' scene.render.image_settings.quality = 94 img.filepath_raw = out_path img.file_format = 'JPEG' img.save() nodes.remove(tnode) bpy.data.images.remove(img) loaded = bpy.data.images.load(out_path, check_existing=True) loaded.colorspace_settings.name = 'sRGB' if is_color else 'Non-Color' return loaded def create_source_bake_mat(name, ph_main, ph_alt, mode="paint"): mat = bpy.data.materials.new(name) mat.use_nodes = True nt = mat.node_tree nodes = nt.nodes links = nt.links nodes.clear() out = nodes.new("ShaderNodeOutputMaterial") bsdf = nodes.new("ShaderNodeBsdfPrincipled") links.new(bsdf.outputs["BSDF"], out.inputs["Surface"]) tex_coord = nodes.new("ShaderNodeTexCoord") mapping = nodes.new("ShaderNodeMapping") mapping.inputs["Scale"].default_value = (1.5, 1.5, 1.5) links.new(tex_coord.outputs["UV"], mapping.inputs["Vector"]) t_diff1 = nodes.new("ShaderNodeTexImage") t_diff1.image = ph_imgs[ph_main]["diff"] t_norm1 = nodes.new("ShaderNodeTexImage") t_norm1.image = ph_imgs[ph_main]["nor_gl"] t_arm1 = nodes.new("ShaderNodeTexImage") t_arm1.image = ph_imgs[ph_main]["arm"] for t in (t_diff1, t_norm1, t_arm1): links.new(mapping.outputs["Vector"], t.inputs["Vector"]) t_diff2 = nodes.new("ShaderNodeTexImage") t_diff2.image = ph_imgs[ph_alt]["diff"] t_arm2 = nodes.new("ShaderNodeTexImage") t_arm2.image = ph_imgs[ph_alt]["arm"] links.new(mapping.outputs["Vector"], t_diff2.inputs["Vector"]) links.new(mapping.outputs["Vector"], t_arm2.inputs["Vector"]) # Primary hull armor plate panels with subtle tonal variation & crisp dark seams brick = nodes.new("ShaderNodeTexBrick") brick.offset = 0.5 brick.squash = 1.8 brick.inputs["Scale"].default_value = 3.5 brick.inputs["Mortar Size"].default_value = 0.010 brick.inputs["Mortar Smooth"].default_value = 0.25 brick.inputs["Color1"].default_value = (0.98, 0.98, 0.98, 1.0) brick.inputs["Color2"].default_value = (0.88, 0.88, 0.90, 1.0) brick.inputs["Mortar"].default_value = (0.38, 0.39, 0.41, 1.0) links.new(tex_coord.outputs["UV"], brick.inputs["Vector"]) # Secondary technical sub-panel lines & access hatches brick2 = nodes.new("ShaderNodeTexBrick") brick2.offset = 0.25 brick2.squash = 1.2 brick2.inputs["Scale"].default_value = 10.0 brick2.inputs["Mortar Size"].default_value = 0.006 brick2.inputs["Mortar Smooth"].default_value = 0.20 brick2.inputs["Color1"].default_value = (0.99, 0.99, 0.99, 1.0) brick2.inputs["Color2"].default_value = (0.93, 0.93, 0.94, 1.0) brick2.inputs["Mortar"].default_value = (0.62, 0.63, 0.65, 1.0) links.new(tex_coord.outputs["UV"], brick2.inputs["Vector"]) # Weathering / scorch / micro-meteorite pitting noise noise = nodes.new("ShaderNodeTexNoise") noise.inputs["Scale"].default_value = 5.5 noise.inputs["Detail"].default_value = 12.0 noise.inputs["Roughness"].default_value = 0.65 links.new(tex_coord.outputs["UV"], noise.inputs["Vector"]) mix_bricks = nodes.new("ShaderNodeMixRGB") mix_bricks.blend_type = 'MULTIPLY' mix_bricks.inputs["Fac"].default_value = 0.68 links.new(brick.outputs["Color"], mix_bricks.inputs["Color1"]) links.new(brick2.outputs["Color"], mix_bricks.inputs["Color2"]) hsv = nodes.new("ShaderNodeHueSaturation") if mode == "paint": hsv.inputs["Saturation"].default_value = 0.06 hsv.inputs["Value"].default_value = 1.75 elif mode == "weapon": hsv.inputs["Saturation"].default_value = 0.08 hsv.inputs["Value"].default_value = 1.52 elif mode == "bare": hsv.inputs["Saturation"].default_value = 0.14 hsv.inputs["Value"].default_value = 1.38 elif mode == "scorch": hsv.inputs["Saturation"].default_value = 0.48 hsv.inputs["Value"].default_value = 0.46 links.new(t_diff1.outputs["Color"], hsv.inputs["Color"]) hsv2 = nodes.new("ShaderNodeHueSaturation") if mode == "paint": hsv2.inputs["Saturation"].default_value = 0.22 hsv2.inputs["Value"].default_value = 1.18 elif mode == "weapon": hsv2.inputs["Saturation"].default_value = 0.14 hsv2.inputs["Value"].default_value = 1.15 elif mode == "scorch": hsv2.inputs["Saturation"].default_value = 0.58 hsv2.inputs["Value"].default_value = 0.38 else: hsv2.inputs["Saturation"].default_value = 0.20 hsv2.inputs["Value"].default_value = 1.05 links.new(t_diff2.outputs["Color"], hsv2.inputs["Color"]) mix_ph = nodes.new("ShaderNodeMixRGB") mix_ph.blend_type = 'MIX' links.new(noise.outputs["Fac"], mix_ph.inputs["Fac"]) links.new(hsv.outputs["Color"], mix_ph.inputs["Color1"]) links.new(hsv2.outputs["Color"], mix_ph.inputs["Color2"]) final_col = nodes.new("ShaderNodeMixRGB") final_col.blend_type = 'MULTIPLY' final_col.inputs["Fac"].default_value = 0.76 if mode == "paint" else 0.65 links.new(mix_ph.outputs["Color"], final_col.inputs["Color1"]) links.new(mix_bricks.outputs["Color"], final_col.inputs["Color2"]) if mode == "paint": bright = nodes.new("ShaderNodeBrightContrast") bright.inputs["Bright"].default_value = 0.15 bright.inputs["Contrast"].default_value = 0.15 links.new(final_col.outputs["Color"], bright.inputs["Color"]) links.new(bright.outputs["Color"], bsdf.inputs["Base Color"]) elif mode == "weapon": bright = nodes.new("ShaderNodeBrightContrast") bright.inputs["Bright"].default_value = 0.08 bright.inputs["Contrast"].default_value = 0.12 links.new(final_col.outputs["Color"], bright.inputs["Color"]) links.new(bright.outputs["Color"], bsdf.inputs["Base Color"]) else: links.new(final_col.outputs["Color"], bsdf.inputs["Base Color"]) norm_map = nodes.new("ShaderNodeNormalMap") norm_map.inputs["Strength"].default_value = 0.85 links.new(t_norm1.outputs["Color"], norm_map.inputs["Color"]) bump = nodes.new("ShaderNodeBump") bump.inputs["Strength"].default_value = 0.42 bump.inputs["Distance"].default_value = 0.020 links.new(mix_bricks.outputs["Color"], bump.inputs["Height"]) links.new(norm_map.outputs["Normal"], bump.inputs["Normal"]) links.new(bump.outputs["Normal"], bsdf.inputs["Normal"]) sep1 = nodes.new("ShaderNodeSeparateColor") links.new(t_arm1.outputs["Color"], sep1.inputs["Color"]) ao_mul = nodes.new("ShaderNodeMath") ao_mul.operation = 'MULTIPLY' links.new(sep1.outputs["Red"], ao_mul.inputs[0]) links.new(mix_bricks.outputs["Color"], ao_mul.inputs[1]) rough_map = nodes.new("ShaderNodeMapRange") if mode == "paint": rough_map.inputs["To Min"].default_value = 0.36 rough_map.inputs["To Max"].default_value = 0.65 metal_val = 0.22 elif mode == "weapon": rough_map.inputs["To Min"].default_value = 0.34 rough_map.inputs["To Max"].default_value = 0.58 metal_val = 0.35 elif mode == "bare": rough_map.inputs["To Min"].default_value = 0.32 rough_map.inputs["To Max"].default_value = 0.56 metal_val = 0.58 else: # scorch rough_map.inputs["To Min"].default_value = 0.28 rough_map.inputs["To Max"].default_value = 0.62 metal_val = 0.78 links.new(sep1.outputs["Green"], rough_map.inputs["Value"]) comb_orm = nodes.new("ShaderNodeCombineColor") links.new(ao_mul.outputs["Value"], comb_orm.inputs["Red"]) links.new(rough_map.outputs["Result"], comb_orm.inputs["Green"]) comb_orm.inputs["Blue"].default_value = metal_val mat["_orm_out_node"] = comb_orm.name return mat def bake_complete_pbr_set(prefix, ph_main, ph_alt, mode): src_mat = create_source_bake_mat(f"_Src_{prefix}", ph_main, ph_alt, mode=mode) base_path = os.path.join(TEX_BAKE_DIR, f"{prefix}_base_1024.jpg") norm_path = os.path.join(TEX_BAKE_DIR, f"{prefix}_norm_1024.jpg") orm_path = os.path.join(TEX_BAKE_DIR, f"{prefix}_orm_512.jpg") bsdf = [n for n in src_mat.node_tree.nodes if n.type == 'BSDF_PRINCIPLED'][0] bsdf.inputs["Metallic"].default_value = 0.0 img_base = bake_pass_to_file(src_mat, 'DIFFUSE', 1024, base_path, is_color=True) img_norm = bake_pass_to_file(src_mat, 'NORMAL', 1024, norm_path, is_color=False) comb_orm = src_mat.node_tree.nodes[src_mat["_orm_out_node"]] emit = src_mat.node_tree.nodes.new("ShaderNodeEmission") out = [n for n in src_mat.node_tree.nodes if n.type == 'OUTPUT_MATERIAL'][0] src_mat.node_tree.links.new(comb_orm.outputs["Color"], emit.inputs["Color"]) src_mat.node_tree.links.new(emit.outputs["Emission"], out.inputs["Surface"]) img_orm = bake_pass_to_file(src_mat, 'EMIT', 512, orm_path, is_color=False) bpy.data.materials.remove(src_mat) return img_base, img_norm, img_orm baked = {} baked["Paint"] = bake_complete_pbr_set("paint", "metal_plate", "rusty_metal_02", "paint") baked["BareMetal"] = bake_complete_pbr_set("bare", "metal_plate_02", "corrugated_iron_02", "bare") baked["ScorchedMetal"] = bake_complete_pbr_set("scorch", "rusty_metal_02", "metal_plate", "scorch") baked["WeaponArmor"] = bake_complete_pbr_set("weapon", "metal_plate", "metal_plate_02", "weapon") # Bake Emissive texture for Engines (Rich electric blue plasma core + warm orange-gold rim) eng_src = bpy.data.materials.new("_Src_Engines") eng_src.use_nodes = True nt = eng_src.node_tree nt.nodes.clear() out = nt.nodes.new("ShaderNodeOutputMaterial") emit = nt.nodes.new("ShaderNodeEmission") nt.links.new(emit.outputs["Emission"], out.inputs["Surface"]) tc = nt.nodes.new("ShaderNodeTexCoord") sep_uv = nt.nodes.new("ShaderNodeSeparateXYZ") nt.links.new(tc.outputs["UV"], sep_uv.inputs["Vector"]) ramp = nt.nodes.new("ShaderNodeValToRGB") ramp.color_ramp.elements[0].position = 0.0 ramp.color_ramp.elements[0].color = (0.04, 0.52, 1.0, 1.0) e_mid = ramp.color_ramp.elements.new(0.55) e_mid.color = (0.16, 0.76, 1.0, 1.0) ramp.color_ramp.elements[1].position = 0.90 ramp.color_ramp.elements[1].color = (1.0, 0.45, 0.10, 1.0) nt.links.new(sep_uv.outputs["Y"], ramp.inputs["Fac"]) nt.links.new(ramp.outputs["Color"], emit.inputs["Color"]) eng_path = os.path.join(TEX_BAKE_DIR, "engines_emit_512.jpg") baked["Engines_Emit"] = bake_pass_to_file(eng_src, 'EMIT', 512, eng_path, is_color=True) bpy.data.materials.remove(eng_src) # Bake Emissive texture for Lamps (Deep saturated electric cyan-blue capacitor glow) lamp_src = bpy.data.materials.new("_Src_Lamps") lamp_src.use_nodes = True nt = lamp_src.node_tree nt.nodes.clear() out = nt.nodes.new("ShaderNodeOutputMaterial") emit = nt.nodes.new("ShaderNodeEmission") nt.links.new(emit.outputs["Emission"], out.inputs["Surface"]) tc = nt.nodes.new("ShaderNodeTexCoord") brick = nt.nodes.new("ShaderNodeTexBrick") brick.inputs["Scale"].default_value = 4.0 brick.inputs["Mortar Size"].default_value = 0.025 brick.inputs["Color1"].default_value = (0.02, 0.40, 1.0, 1.0) brick.inputs["Color2"].default_value = (0.06, 0.56, 1.0, 1.0) brick.inputs["Mortar"].default_value = (0.01, 0.22, 0.72, 1.0) nt.links.new(tc.outputs["UV"], brick.inputs["Vector"]) nt.links.new(brick.outputs["Color"], emit.inputs["Color"]) lamp_path = os.path.join(TEX_BAKE_DIR, "lamps_emit_512.jpg") baked["Lamps_Emit"] = bake_pass_to_file(lamp_src, 'EMIT', 512, lamp_path, is_color=True) bpy.data.materials.remove(lamp_src) bpy.data.objects.remove(bake_obj, do_unlink=True) bpy.data.meshes.remove(bake_mesh, do_unlink=True) scene.cycles.samples = old_samples scene.render.image_settings.file_format = 'PNG' print("[Bake] All game-weight textures baked as JPEG (1024px base/norm, 512px ORM/emit).") return baked # --------------------------------------------------------------------------- # Step 4: Final glTF Exportable Materials Setup (7 Materials total, budget <= 9) # --------------------------------------------------------------------------- def build_export_materials(baked): mats = {} def make_gltf_pbr_mat(name, imgs, factor=None): mat = bpy.data.materials.new(name) mat.use_nodes = True nt = mat.node_tree nodes = nt.nodes links = nt.links nodes.clear() out = nodes.new("ShaderNodeOutputMaterial") bsdf = nodes.new("ShaderNodeBsdfPrincipled") links.new(bsdf.outputs["BSDF"], out.inputs["Surface"]) img_base, img_norm, img_orm = imgs t_base = nodes.new("ShaderNodeTexImage") t_base.image = img_base t_base.name = "BaseColorTexNode" if factor is not None: mix = nodes.new("ShaderNodeMixRGB") mix.name = "PaintFactorMix" mix.blend_type = 'MULTIPLY' mix.inputs["Fac"].default_value = 1.0 mix.inputs["Color2"].default_value = (factor[0], factor[1], factor[2], 1.0) links.new(t_base.outputs["Color"], mix.inputs["Color1"]) links.new(mix.outputs["Color"], bsdf.inputs["Base Color"]) bsdf.inputs["Base Color"].default_value = (factor[0], factor[1], factor[2], 1.0) else: links.new(t_base.outputs["Color"], bsdf.inputs["Base Color"]) t_orm = nodes.new("ShaderNodeTexImage") t_orm.image = img_orm sep = nodes.new("ShaderNodeSeparateColor") links.new(t_orm.outputs["Color"], sep.inputs["Color"]) links.new(sep.outputs["Green"], bsdf.inputs["Roughness"]) links.new(sep.outputs["Blue"], bsdf.inputs["Metallic"]) gltf_group = bpy.data.node_groups.get("glTF Material Output") if gltf_group is None: gltf_group = bpy.data.node_groups.new("glTF Material Output", "ShaderNodeTree") gltf_group.interface.new_socket(name="Occlusion", in_out='INPUT', socket_type='NodeSocketFloat') gnode = nodes.new("ShaderNodeGroup") gnode.node_tree = gltf_group links.new(sep.outputs["Red"], gnode.inputs["Occlusion"]) t_norm = nodes.new("ShaderNodeTexImage") t_norm.image = img_norm nmap = nodes.new("ShaderNodeNormalMap") nmap.inputs["Strength"].default_value = 0.85 links.new(t_norm.outputs["Color"], nmap.inputs["Color"]) links.new(nmap.outputs["Normal"], bsdf.inputs["Normal"]) return mat mats["Paint"] = make_gltf_pbr_mat("Paint", baked["Paint"], factor=PAINTS[0]["color"]) mats["BareMetal"] = make_gltf_pbr_mat("BareMetal", baked["BareMetal"], factor=None) mats["ScorchedMetal"] = make_gltf_pbr_mat("ScorchedMetal", baked["ScorchedMetal"], factor=None) mats["WeaponArmor"] = make_gltf_pbr_mat("WeaponArmor", baked["WeaponArmor"], factor=None) # Engines (Emissive) m_eng = bpy.data.materials.new("Engines") m_eng.use_nodes = True nt = m_eng.node_tree nt.nodes.clear() out = nt.nodes.new("ShaderNodeOutputMaterial") bsdf = nt.nodes.new("ShaderNodeBsdfPrincipled") nt.links.new(bsdf.outputs["BSDF"], out.inputs["Surface"]) t_eng = nt.nodes.new("ShaderNodeTexImage") t_eng.image = baked["Engines_Emit"] nt.links.new(t_eng.outputs["Color"], bsdf.inputs["Base Color"]) nt.links.new(t_eng.outputs["Color"], bsdf.inputs["Emission Color"]) bsdf.inputs["Emission Strength"].default_value = 6.5 bsdf.inputs["Roughness"].default_value = 0.15 mats["Engines"] = m_eng # Lamps (Emissive cyan-blue capacitor banks, lit windows, running lights) m_lamp = bpy.data.materials.new("Lamps") m_lamp.use_nodes = True nt = m_lamp.node_tree nt.nodes.clear() out = nt.nodes.new("ShaderNodeOutputMaterial") bsdf = nt.nodes.new("ShaderNodeBsdfPrincipled") nt.links.new(bsdf.outputs["BSDF"], out.inputs["Surface"]) t_lamp = nt.nodes.new("ShaderNodeTexImage") t_lamp.image = baked["Lamps_Emit"] nt.links.new(t_lamp.outputs["Color"], bsdf.inputs["Base Color"]) nt.links.new(t_lamp.outputs["Color"], bsdf.inputs["Emission Color"]) bsdf.inputs["Emission Strength"].default_value = 2.6 bsdf.inputs["Roughness"].default_value = 0.10 mats["Lamps"] = m_lamp # Glass (Bridge glazing, alpha BLEND, tinted cyan-blue) m_glass = bpy.data.materials.new("Glass") m_glass.use_nodes = True m_glass.surface_render_method = 'BLENDED' nt = m_glass.node_tree nt.nodes.clear() out = nt.nodes.new("ShaderNodeOutputMaterial") bsdf = nt.nodes.new("ShaderNodeBsdfPrincipled") nt.links.new(bsdf.outputs["BSDF"], out.inputs["Surface"]) bsdf.inputs["Base Color"].default_value = (0.18, 0.58, 0.82, 1.0) bsdf.inputs["Metallic"].default_value = 0.15 bsdf.inputs["Roughness"].default_value = 0.05 bsdf.inputs["Alpha"].default_value = 0.45 bsdf.inputs["Emission Color"].default_value = (0.10, 0.55, 0.92, 1.0) bsdf.inputs["Emission Strength"].default_value = 1.6 mats["Glass"] = m_glass return mats # --------------------------------------------------------------------------- # Step 5: High-Detail Hard-Surface BMesh Primitives # --------------------------------------------------------------------------- MAT_IDX = { "Paint": 0, "BareMetal": 1, "ScorchedMetal": 2, "WeaponArmor": 3, "Engines": 4, "Lamps": 5, "Glass": 6, } def add_oct_loft(bm, z0, z1, wx0, hy0, chx0, chy0, wx1, hy1, chx1, chy1, y_off0=0.0, y_off1=0.0, x_off0=0.0, x_off1=0.0, mat_idx=0, cap_start=True, cap_end=True, bevel_width=0.45, bevel_segs=2, segs_z=1): def profile_pts(z, wx, hy, chx, chy, xo, yo): return [ g2b(xo + wx, yo + hy - chy, z), g2b(xo + wx - chx, yo + hy, z), g2b(xo - wx + chx, yo + hy, z), g2b(xo - wx, yo + hy - chy, z), g2b(xo - wx, yo - hy + chy, z), g2b(xo - wx + chx, yo - hy, z), g2b(xo + wx - chx, yo - hy, z), g2b(xo + wx, yo - hy + chy, z), ] rings = [] for s in range(segs_z + 1): t = s / float(segs_z) z = z0 + (z1 - z0) * t wx = wx0 + (wx1 - wx0) * t hy = hy0 + (hy1 - hy0) * t cx = chx0 + (chx1 - chx0) * t cy = chy0 + (chy1 - chy0) * t xo = x_off0 + (x_off1 - x_off0) * t yo = y_off0 + (y_off1 - y_off0) * t pts = profile_pts(z, wx, hy, cx, cy, xo, yo) rings.append([bm.verts.new(p) for p in pts]) created_faces = [] n = 8 for s in range(segs_z): rA = rings[s] rB = rings[s + 1] for i in range(n): j = (i + 1) % n f = bm.faces.new((rA[i], rA[j], rB[j], rB[i])) f.material_index = mat_idx created_faces.append(f) if cap_start: f = bm.faces.new(list(reversed(rings[0]))) f.material_index = mat_idx created_faces.append(f) if cap_end: f = bm.faces.new(rings[-1]) f.material_index = mat_idx created_faces.append(f) bmesh.ops.recalc_face_normals(bm, faces=created_faces) if bevel_width > 0.0: edges = list({e for f in created_faces for e in f.edges}) res = bmesh.ops.bevel( bm, geom=edges, offset=bevel_width, offset_type='OFFSET', segments=bevel_segs, profile=0.5, affect='EDGES' ) for f in res.get("faces", []): f.material_index = mat_idx f.smooth = (bevel_segs > 1) return created_faces def add_half_oct_collar(bm, side, z0, z1, x_inner, wx0, hy0, chx0, chy0, belt_y0, wx1=None, hy1=None, chx1=None, chy1=None, belt_y1=None, mat_idx=0, bevel_width=0.55, bevel_segs=3): if wx1 is None: wx1 = wx0 if hy1 is None: hy1 = hy0 if chx1 is None: chx1 = chx0 if chy1 is None: chy1 = chy0 if belt_y1 is None: belt_y1 = belt_y0 sx = float(side) def make_ring(z, wx, hy, chx, belt_y): pts = [ g2b(sx * x_inner, hy, z), g2b(sx * (wx - chx), hy, z), g2b(sx * wx, belt_y, z), g2b(sx * wx, -belt_y, z), g2b(sx * (wx - chx), -hy, z), g2b(sx * x_inner, -hy, z), ] if side < 0: pts.reverse() return [bm.verts.new(p) for p in pts] r0 = make_ring(z0, wx0, hy0, chx0, belt_y0) r1 = make_ring(z1, wx1, hy1, chx1, belt_y1) n = len(r0) faces = [] for i in range(n): j = (i + 1) % n f = bm.faces.new((r0[i], r0[j], r1[j], r1[i])) f.material_index = mat_idx faces.append(f) f_start = bm.faces.new(list(reversed(r0))) f_start.material_index = mat_idx f_end = bm.faces.new(r1) f_end.material_index = mat_idx faces.extend([f_start, f_end]) bmesh.ops.recalc_face_normals(bm, faces=faces) if bevel_width > 0.0: edges = list({e for f in faces for e in f.edges}) res = bmesh.ops.bevel( bm, geom=edges, offset=bevel_width, offset_type='OFFSET', segments=bevel_segs, profile=0.5, affect='EDGES' ) for f in res.get("faces", []): f.material_index = mat_idx f.smooth = (bevel_segs > 1) return faces def add_jaw_octagon(bm, side, vdir, z0, z1, x_in, wx0, y_in0, hy0, chx0, chy0, wx1, y_in1, hy1, chx1, chy1, mat_idx=0, bevel_width=0.50, bevel_segs=3): sx = float(side) vy = float(vdir) def make_ring(z, wx, y_in, hy, chx, chy): pts = [ g2b(sx * x_in, vy * y_in, z), g2b(sx * (wx - chx*0.4), vy * y_in, z), g2b(sx * wx, vy * (y_in + 3.5), z), g2b(sx * wx, vy * (hy - chy), z), g2b(sx * (wx - chx), vy * hy, z), g2b(sx * x_in, vy * hy, z), ] if (side * vdir) < 0: pts.reverse() return [bm.verts.new(p) for p in pts] r0 = make_ring(z0, wx0, y_in0, hy0, chx0, chy0) r1 = make_ring(z1, wx1, y_in1, hy1, chx1, chy1) n = len(r0) faces = [] for i in range(n): j = (i + 1) % n f = bm.faces.new((r0[i], r0[j], r1[j], r1[i])) f.material_index = mat_idx faces.append(f) faces.append(bm.faces.new(list(reversed(r0)))) faces.append(bm.faces.new(r1)) for f in faces[-2:]: f.material_index = mat_idx bmesh.ops.recalc_face_normals(bm, faces=faces) if bevel_width > 0.0: edges = list({e for f in faces for e in f.edges}) res = bmesh.ops.bevel( bm, geom=edges, offset=bevel_width, offset_type='OFFSET', segments=bevel_segs, profile=0.5, affect='EDGES' ) for f in res.get("faces", []): f.material_index = mat_idx f.smooth = (bevel_segs > 1) return faces def add_beveled_box(bm, x0, x1, y0, y1, z0, z1, mat_idx=0, bevel=0.25, bevel_segs=2, taper_top_x=0.0, taper_top_z=0.0, taper_front_y=0.0, taper_front_x=0.0): pts = [ g2b(x0, y0, z0), g2b(x1, y0, z0), g2b(x1 - taper_front_x, y0 + taper_front_y, z1), g2b(x0 + taper_front_x, y0 + taper_front_y, z1), g2b(x0 + taper_top_x, y1, z0 + taper_top_z), g2b(x1 - taper_top_x, y1, z0 + taper_top_z), g2b(x1 - taper_top_x - taper_front_x, y1 - taper_front_y, z1 - taper_top_z), g2b(x0 + taper_top_x + taper_front_x, y1 - taper_front_y, z1 - taper_top_z), ] v = [bm.verts.new(p) for p in pts] quads = [ (v[0], v[3], v[2], v[1]), (v[4], v[5], v[6], v[7]), (v[0], v[1], v[5], v[4]), (v[2], v[3], v[7], v[6]), (v[1], v[2], v[6], v[5]), (v[3], v[0], v[4], v[7]), ] faces = [] for q in quads: f = bm.faces.new(q) f.material_index = mat_idx faces.append(f) bmesh.ops.recalc_face_normals(bm, faces=faces) if bevel > 0.0: edges = list({e for f in faces for e in f.edges}) res = bmesh.ops.bevel( bm, geom=edges, offset=bevel, offset_type='OFFSET', segments=bevel_segs, profile=0.5, affect='EDGES' ) for f in res.get("faces", []): f.material_index = mat_idx f.smooth = (bevel_segs > 1) return faces def add_cylinder_axis(bm, p0_gltf, p1_gltf, r0, r1, segs=24, mat_idx=1, cap0=True, cap1=True, smooth=True): p0 = g2b(*p0_gltf) p1 = g2b(*p1_gltf) axis = p1 - p0 length = axis.length if length < 1e-5: return [] d = axis.normalized() up = Vector((0, 0, 1)) if abs(d.z) < 0.9 else Vector((1, 0, 0)) u = d.cross(up).normalized() v = d.cross(u).normalized() ring0 = [] ring1 = [] for i in range(segs): ang = 2.0 * math.pi * i / segs ca, sa = math.cos(ang), math.sin(ang) nvec = u * ca + v * sa ring0.append(bm.verts.new(p0 + nvec * r0)) ring1.append(bm.verts.new(p1 + nvec * r1)) faces = [] for i in range(segs): j = (i + 1) % segs f = bm.faces.new((ring0[i], ring0[j], ring1[j], ring1[i])) f.material_index = mat_idx f.smooth = smooth faces.append(f) if cap0 and r0 > 1e-4: f0 = bm.faces.new(list(reversed(ring0))) f0.material_index = mat_idx f0.smooth = False faces.append(f0) if cap1 and r1 > 1e-4: f1 = bm.faces.new(ring1) f1.material_index = mat_idx f1.smooth = False faces.append(f1) bmesh.ops.recalc_face_normals(bm, faces=faces) return faces # --------------------------------------------------------------------------- # Step 6: Build the Fixed Ship Hull (1100.0 m x 160.0 m x 140.0 m) # Exact Bounding Box in glTF Y-up: # X: [-80.0, +80.0] -> 160.0 m wide # Y: [-45.0, +95.0] -> 140.0 m high (Ventral Keel -45.0m to Mast Tip +95.0m) # Z: [-550.0, +550.0] -> 1100.0 m long (Engine Bell Exit -550.0m to Bow Tip +550.0m) # --------------------------------------------------------------------------- def build_hull_mesh(mats): bm = bmesh.new() M_PAINT = MAT_IDX["Paint"] M_BARE = MAT_IDX["BareMetal"] M_SCORCH = MAT_IDX["ScorchedMetal"] M_WEAPON = MAT_IDX["WeaponArmor"] M_ENG = MAT_IDX["Engines"] M_LAMP = MAT_IDX["Lamps"] M_GLASS = MAT_IDX["Glass"] # ========================================================================= # 1. BOW RAILGUN APERTURE & TWIN SPINAL JAWS (Z = +410.0 to +550.0) # ========================================================================= add_oct_loft(bm, 265.0, 458.0, 36.5, 34.5, 12.0, 12.0, 34.5, 29.0, 10.0, 10.0, mat_idx=M_SCORCH, bevel_width=0.45, bevel_segs=2, segs_z=3) # Deep recessed inner bore side-shroud inside the bow aperture (Z = +452 to +522) # Creates the deep dark octagonal chamber seen in the 3/4 Hero View & Front View! for side in (-1, 1): sx = float(side) bx0 = 21.5 if side > 0 else -25.5 bx1 = 25.5 if side > 0 else -21.5 add_beveled_box(bm, bx0, bx1, -14.5, 14.5, 452.0, 518.0, mat_idx=M_SCORCH, bevel=0.35, bevel_segs=2, taper_front_y=2.0) for z_rib in range(458, 516, 8): add_beveled_box(bm, bx0 - 0.6 * sx, bx1 - 0.2 * sx, -13.0, 13.0, z_rib - 1.2, z_rib + 1.2, mat_idx=M_BARE, bevel=0.15, bevel_segs=1) for side in (-1, 1): sx = float(side) # Base jaw transition collar (Z = +410 to +456) add_half_oct_collar( bm, side, 410.0, 456.0, x_inner=5.0, wx0=41.5, hy0=39.5, chx0=13.5, chy0=13.5, belt_y0=15.5, wx1=39.0, hy1=37.0, chx1=12.5, chy1=12.5, belt_y1=14.5, mat_idx=M_PAINT, bevel_width=0.65, bevel_segs=3 ) for vdir in (-1, 1): vy = float(vdir) # Inner C-jaw angled gusset at the back of the mouth (Z = +450 to +476) add_jaw_octagon( bm, side, vdir, 450.0, 476.0, x_in=5.0, wx0=39.0, y_in0=10.5, hy0=37.0, chx0=12.5, chy0=12.5, wx1=37.5, y_in1=15.0, hy1=35.5, chx1=11.8, chy1=11.8, mat_idx=M_PAINT, bevel_width=0.55, bevel_segs=3 ) # Main Forward Jaw Prong (Z = +474 to +530) add_jaw_octagon( bm, side, vdir, 474.0, 530.0, x_in=5.0, wx0=37.5, y_in0=15.0, hy0=35.5, chx0=11.8, chy0=11.8, wx1=34.5, y_in1=16.2, hy1=32.0, chx1=10.5, chy1=10.5, mat_idx=M_PAINT, bevel_width=0.60, bevel_segs=3 ) # Forward Nose Tip & Muzzle Tooth (Z = +528 to +546.0) # Notice how y_in steps inward from 16.2 to 11.8 to form the iconic notched jaw tooth! add_jaw_octagon( bm, side, vdir, 528.0, 546.0, x_in=5.2, wx0=34.5, y_in0=16.2, hy0=32.0, chx0=10.5, chy0=10.5, wx1=31.5, y_in1=11.8, hy1=28.5, chx1=9.5, chy1=9.5, mat_idx=M_PAINT, bevel_width=0.50, bevel_segs=3 ) # Heavy Heat-Scorched Muzzle Emitter Shoe at the exact tip Z = +544.5 to +550.0 add_jaw_octagon( bm, side, vdir, 544.5, 550.0, x_in=5.5, wx0=31.0, y_in0=11.8, hy0=28.0, chx0=9.0, chy0=9.0, wx1=28.0, y_in1=13.0, hy1=25.5, chx1=8.0, chy1=8.0, mat_idx=M_SCORCH, bevel_width=0.40, bevel_segs=2 ) # Inner Electromagnetic Rail Track & Ribbed Accelerator Shoes along the Jaw Mouth ry0 = 11.2 if vdir > 0 else -15.2 ry1 = 15.2 if vdir > 0 else -11.2 rx0 = 5.5 if side > 0 else -27.5 rx1 = 27.5 if side > 0 else -5.5 add_beveled_box(bm, rx0, rx1, ry0, ry1, 452.0, 546.0, mat_idx=M_SCORCH, bevel=0.30, bevel_segs=2) # 28 Ribbed Electromagnetic Accelerator Teeth lining each jaw inner surface for k in range(28): zk = 454.0 + k * 3.3 ty0 = 10.0 if vdir > 0 else -13.6 ty1 = 13.6 if vdir > 0 else -10.0 tx0 = 6.2 if side > 0 else -24.5 tx1 = 24.5 if side > 0 else -6.2 add_beveled_box(bm, tx0, tx1, ty0, ty1, zk, zk + 1.9, mat_idx=M_BARE if k % 2 == 0 else M_SCORCH, bevel=0.18, bevel_segs=2) # ========================================================================= # 2. FORWARD HEAVY ARMOR SHROUD (Z = +265 to +410) & NECK (Z = +195 to +265) # Flush dorsal profile; clean spacecraft armor panels on the sides (no dark squares!) # ========================================================================= for (z0, z1) in [(339.0, 409.0), (266.0, 336.0)]: for side in (-1, 1): sx = float(side) add_half_oct_collar( bm, side, z0, z1, x_inner=5.0, wx0=43.5, hy0=41.5, chx0=14.5, chy0=14.5, belt_y0=16.0, mat_idx=M_PAINT, bevel_width=0.75, bevel_segs=3 ) # Clean flush-framed armor belt panels in Paint with subtle thin seam frames for zm in (z0 + 18.0, z0 + 52.0): hx0 = 42.8 if side > 0 else -44.2 hx1 = 44.2 if side > 0 else -42.8 add_beveled_box(bm, hx0, hx1, -12.5, 12.5, zm - 13.5, zm + 13.5, mat_idx=M_PAINT, bevel=0.40, bevel_segs=2) add_beveled_box(bm, hx0 + 0.2 * sx, hx1 + 0.15 * sx, -6.5, 6.5, zm - 7.5, zm + 7.5, mat_idx=M_PAINT, bevel=0.25, bevel_segs=2) # Structural Neck Section (Z = +196 to +264) add_oct_loft(bm, 194.0, 266.0, 37.5, 35.5, 11.5, 11.5, 37.5, 35.5, 11.5, 11.5, mat_idx=M_SCORCH, bevel_width=0.40, bevel_segs=2) for (z0, z1) in [(197.5, 228.5), (232.5, 263.5)]: for side in (-1, 1): sx = float(side) add_half_oct_collar( bm, side, z0, z1, x_inner=5.0, wx0=39.5, hy0=38.0, chx0=12.5, chy0=12.5, belt_y0=14.0, mat_idx=M_PAINT, bevel_width=0.60, bevel_segs=3 ) nx0 = 38.5 if side > 0 else -40.0 nx1 = 40.0 if side > 0 else -38.5 add_beveled_box(bm, nx0, nx1, -9.0, 9.0, z0 + 3.5, z1 - 3.5, mat_idx=M_BARE, bevel=0.25, bevel_segs=2) for y_cond in (-5.0, -1.7, 1.7, 5.0): add_cylinder_axis(bm, (sx * 39.8, y_cond, z0 + 2.0), (sx * 39.8, y_cond, z1 - 2.0), 0.65, 0.65, segs=12, mat_idx=M_SCORCH) # ========================================================================= # 3. CAPACITOR BANK COLLAR (Z = -35.0 to +195.0, 5 Massive Octagonal Armor Bays) # Full wrap-around Paint octagonal rings with framed side pockets and 8 distinct # glowing cyan-blue plasma capacitor cells (2 rows x 4 columns) per bay! # ========================================================================= add_oct_loft(bm, -36.0, 196.0, 52.0, 40.5, 15.0, 15.0, 52.0, 40.5, 15.0, 15.0, mat_idx=M_SCORCH, bevel_width=0.45, bevel_segs=2, segs_z=5) cap_bay_bounds = [ (-34.0, 9.5), ( 12.0, 55.5), ( 58.0, 101.5), (104.0, 147.5), (150.0, 193.5), ] for bay_idx, (z0, z1) in enumerate(cap_bay_bounds): for side in (-1, 1): sx = float(side) x_in = 5.0 wx = 56.5 hy = 43.5 chx = 15.0 sh_y = 26.5 # 45-deg chamfer shoulder ends at Y = ±26.5 belt_y = 10.0 # Vertical Paint armor wall continues down to Y = ±10.0! def make_upper_cap_ring(z): pts = [ g2b(sx * x_in, hy, z), g2b(sx * (wx - chx), hy, z), g2b(sx * wx, sh_y, z), g2b(sx * wx, belt_y, z), g2b(sx * (wx - 5.5), belt_y, z), g2b(sx * x_in, belt_y, z), ] if side < 0: pts.reverse() return [bm.verts.new(p) for p in pts] ru0, ru1 = make_upper_cap_ring(z0), make_upper_cap_ring(z1) f_up = [] for i in range(6): j = (i + 1) % 6 f = bm.faces.new((ru0[i], ru0[j], ru1[j], ru1[i])) f.material_index = M_PAINT f_up.append(f) f_up.append(bm.faces.new(list(reversed(ru0)))) f_up.append(bm.faces.new(ru1)) f_up[-2].material_index = M_PAINT f_up[-1].material_index = M_PAINT bmesh.ops.recalc_face_normals(bm, faces=f_up) edges_u = list({e for f in f_up for e in f.edges}) res_u = bmesh.ops.bevel(bm, geom=edges_u, offset=0.65, offset_type='OFFSET', segments=3, profile=0.5, affect='EDGES') for f in res_u.get("faces", []): f.material_index = M_PAINT f.smooth = True def make_lower_cap_ring(z): pts = [ g2b(sx * x_in, -belt_y, z), g2b(sx * (wx - 5.5), -belt_y, z), g2b(sx * wx, -belt_y, z), g2b(sx * wx, -sh_y, z), g2b(sx * (wx - chx), -hy, z), g2b(sx * x_in, -hy, z), ] if side < 0: pts.reverse() return [bm.verts.new(p) for p in pts] rl0, rl1 = make_lower_cap_ring(z0), make_lower_cap_ring(z1) f_lo = [] for i in range(6): j = (i + 1) % 6 f = bm.faces.new((rl0[i], rl0[j], rl1[j], rl1[i])) f.material_index = M_PAINT f_lo.append(f) f_lo.append(bm.faces.new(list(reversed(rl0)))) f_lo.append(bm.faces.new(rl1)) f_lo[-2].material_index = M_PAINT f_lo[-1].material_index = M_PAINT bmesh.ops.recalc_face_normals(bm, faces=f_lo) edges_l = list({e for f in f_lo for e in f.edges}) res_l = bmesh.ops.bevel(bm, geom=edges_l, offset=0.65, offset_type='OFFSET', segments=3, profile=0.5, affect='EDGES') for f in res_l.get("faces", []): f.material_index = M_PAINT f.smooth = True # Full-height Paint side-wall end pillars at z0 and z1 so each of the 5 segments # forms a closed octagonal armor ring around its recessed capacitor pocket! z_mid = 0.5 * (z0 + z1) for zp in (z0 + 2.2, z1 - 2.2): vx0 = 51.0 if side > 0 else -56.5 vx1 = 56.5 if side > 0 else -51.0 add_beveled_box(bm, vx0, vx1, -11.5, 11.5, zp - 2.2, zp + 2.2, mat_idx=M_PAINT, bevel=0.45, bevel_segs=2) # Dark ScorchedMetal recessed backplate inside the capacitor pocket bx_b0 = 50.8 if side > 0 else -52.8 bx_b1 = 52.8 if side > 0 else -50.8 add_beveled_box(bm, bx_b0, bx_b1, -10.2, 10.2, z0 + 4.0, z1 - 4.0, mat_idx=M_SCORCH, bevel=0.20, bevel_segs=1) # Central BareMetal divider pillar separating the 2 pairs in each bay vx0 = 51.5 if side > 0 else -56.2 vx1 = 56.2 if side > 0 else -51.5 add_beveled_box(bm, vx0, vx1, -10.5, 10.5, z_mid - 1.5, z_mid + 1.5, mat_idx=M_BARE, bevel=0.25, bevel_segs=2) # Horizontal BareMetal central clamping busbar across Y = -0.85..+0.85 # Separates each vertical column into Upper & Lower glowing blue capacitor cells! hx_b0 = 52.2 if side > 0 else -56.0 hx_b1 = 56.0 if side > 0 else -52.2 add_beveled_box(bm, hx_b0, hx_b1, -0.85, 0.85, z0 + 4.2, z1 - 4.2, mat_idx=M_BARE, bevel=0.18, bevel_segs=2) # 2 Sub-bays per Armor Block -> 4 columns x 2 rows = 8 glowing blue cells per bay for sub in (0, 1): zs0 = (z0 + 4.8) if sub == 0 else (z_mid + 1.8) zs1 = (z_mid - 1.8) if sub == 0 else (z1 - 4.8) z_sub_mid = 0.5 * (zs0 + zs1) # Vertical BareMetal rib between the 2 columns of each sub-bay rx_b0 = 52.0 if side > 0 else -55.8 rx_b1 = 55.8 if side > 0 else -52.0 add_beveled_box(bm, rx_b0, rx_b1, -10.0, 10.0, z_sub_mid - 0.65, z_sub_mid + 0.65, mat_idx=M_BARE, bevel=0.15, bevel_segs=1) for col_z in (0.5 * (zs0 + z_sub_mid - 0.65), 0.5 * (z_sub_mid + 0.65 + zs1)): # Upper and Lower glowing cyan-blue plasma capacitor cells for (cy0, cy1) in [(1.05, 8.55), (-8.55, -1.05)]: add_cylinder_axis(bm, (sx * 53.8, cy0, col_z), (sx * 53.8, cy1, col_z), 2.65, 2.65, segs=24, mat_idx=M_LAMP) # Metallic end-caps at top, center, and bottom for y_cap in (-8.85, 0.0, 8.85): add_cylinder_axis(bm, (sx * 53.8, y_cap - 0.40, col_z), (sx * 53.8, y_cap + 0.40, col_z), 2.85, 2.85, segs=20, mat_idx=M_BARE) # Thin protective horizontal guard rods at Y = ±4.8 for y_bar in (-4.8, 4.8): add_cylinder_axis(bm, (sx * 56.2, y_bar, zs0 - 0.3), (sx * 56.2, y_bar, zs1 + 0.3), 0.28, 0.28, segs=12, mat_idx=M_BARE) # ========================================================================= # 4. TWIN SPINAL RAILGUN DORSAL & VENTRAL RAILS (Z = -135 to +410) # Recessed guide rails inside the central slot (never sticking above forward shroud!) # ========================================================================= for side in (-1, 1): sx = float(side) rx_in = 4.8 if side > 0 else -23.5 rx_out = 23.5 if side > 0 else -4.8 # Raised Dorsal Twin Railgun Housing along the Capacitor Collar (Z = -35 to +195) add_beveled_box(bm, rx_in, rx_out, 42.5, 47.2, -35.0, 195.0, mat_idx=M_PAINT, bevel=0.55, bevel_segs=2, taper_top_x=2.5, taper_front_y=1.5) # Sloped Forward Dorsal Spine Cowling ahead of Turret_1 (Z = -135 to -35) add_beveled_box(bm, rx_in, rx_out, 39.0, 46.8, -135.0, -35.0, mat_idx=M_PAINT, bevel=0.55, bevel_segs=2, taper_top_x=3.0) # Exposed metallic electromagnetic guide rail recessed INSIDE the central spinal slot gx_in = 3.6 if side > 0 else -7.0 gx_out = 7.0 if side > 0 else -3.6 add_beveled_box(bm, gx_in, gx_out, 31.0, 38.2, -120.0, 450.0, mat_idx=M_BARE, bevel=0.25, bevel_segs=2) # Ventral Twin Rail Keel Beams (flush with bottom of Capacitor Collar) add_beveled_box(bm, rx_in, rx_out, -44.2, -39.0, -35.0, 195.0, mat_idx=M_PAINT, bevel=0.50, bevel_segs=2) # 48 Recessed Transverse Electromagnetic Clamp Bridges INSIDE the spinal slot for z_clamp in range(-110, 445, 12): add_beveled_box(bm, -6.5, 6.5, 32.0, 36.8, z_clamp - 1.5, z_clamp + 1.5, mat_idx=M_SCORCH, bevel=0.20, bevel_segs=2) add_beveled_box(bm, -6.5, 6.5, -36.8, -32.0, z_clamp - 1.5, z_clamp + 1.5, mat_idx=M_SCORCH, bevel=0.20, bevel_segs=2) # ========================================================================= # 5. MID-AFT MAIN COMBAT HULL & BROADSIDE SPONSON DECKS (Z = -290 to -35) # ========================================================================= add_oct_loft(bm, -295.0, -35.0, 50.0, 39.5, 13.0, 13.0, 52.0, 41.5, 14.0, 14.0, mat_idx=M_PAINT, bevel_width=0.70, bevel_segs=3, segs_z=4) add_beveled_box(bm, -34.0, 34.0, 38.0, 47.0, -175.0, -35.0, mat_idx=M_PAINT, bevel=0.70, bevel_segs=3, taper_top_x=6.0, taper_front_x=5.0) for side in (-1, 1): sx = float(side) ux0 = 42.0 if side > 0 else -66.5 ux1 = 66.5 if side > 0 else -42.0 # Upper Broadside Sponson Deck (Y = +9.0 to +24.2, Z = -275 to -40) add_beveled_box(bm, ux0, ux1, 9.0, 24.2, -275.0, -40.0, mat_idx=M_PAINT, bevel=0.75, bevel_segs=3, taper_top_x=3.0, taper_front_x=4.5) # Lower Broadside Sponson Deck (Y = -24.2 to -9.0, Z = -275 to -40) add_beveled_box(bm, ux0, ux1, -24.2, -9.0, -275.0, -40.0, mat_idx=M_PAINT, bevel=0.75, bevel_segs=3, taper_top_x=3.0, taper_front_x=4.5) # Recessed Mid-Hull Industrial Trench Backplate (Y = -9.5 to +9.5, X = ±53) tx0 = 45.0 if side > 0 else -54.5 tx1 = 54.5 if side > 0 else -45.0 add_beveled_box(bm, tx0, tx1, -9.5, 9.5, -272.0, -42.0, mat_idx=M_SCORCH, bevel=0.30, bevel_segs=2) # 8 Longitudinal Coolant & Power Pipelines inside the Mid-Hull Trench for y_pipe in (-7.0, -5.0, -3.0, -1.0, 1.0, 3.0, 5.0, 7.0): add_cylinder_axis(bm, (sx * 55.4, y_pipe, -270.0), (sx * 55.4, y_pipe, -44.0), 0.68, 0.68, segs=14, mat_idx=M_BARE) # 28 Vertical Structural Stanchion Ribs & Radiator Louver Blocks in the Trench for z_rib in range(-266, -42, 8): rx0 = 52.5 if side > 0 else -58.4 rx1 = 58.4 if side > 0 else -52.5 add_beveled_box(bm, rx0, rx1, -9.2, 9.2, z_rib - 1.1, z_rib + 1.1, mat_idx=M_BARE if (z_rib // 8) % 2 == 0 else M_SCORCH, bevel=0.18, bevel_segs=2) # Sleek Metallic Armor Rubbing Strakes along the Sponson Flanks (replaces neon blue bars!) for z_strake in (-248.0, -145.0, -52.0): wx0 = 64.8 if side > 0 else -66.8 wx1 = 66.8 if side > 0 else -64.8 add_beveled_box(bm, wx0, wx1, 15.2, 17.5, z_strake - 12.0, z_strake + 12.0, mat_idx=M_BARE, bevel=0.15, bevel_segs=2) add_beveled_box(bm, wx0, wx1, -17.5, -15.2, z_strake - 12.0, z_strake + 12.0, mat_idx=M_BARE, bevel=0.15, bevel_segs=2) # Cantilevered Octagonal Turret Sponson Casemates at Z = -95 and Z = -195 for z_tur in (-95.0, -195.0): bx0 = 48.0 if side > 0 else -71.5 bx1 = 71.5 if side > 0 else -48.0 add_beveled_box(bm, bx0, bx1, 9.5, 25.0, z_tur - 24.0, z_tur + 24.0, mat_idx=M_PAINT, bevel=0.65, bevel_segs=3, taper_front_x=4.5) add_beveled_box(bm, bx0, bx1, -25.0, -9.5, z_tur - 24.0, z_tur + 24.0, mat_idx=M_PAINT, bevel=0.65, bevel_segs=3, taper_front_x=4.5) # ========================================================================= # 6. COMMAND TOWER SUPERSTRUCTURE (Z = -345 to -155, Y = +40 to +95.0 m) # ========================================================================= # Tier 1: Citadel Base (Z = -345 to -155, Y = +39 to +55.5, X = -35 to +35) add_beveled_box(bm, -35.0, 35.0, 39.0, 55.5, -345.0, -155.0, mat_idx=M_PAINT, bevel=0.75, bevel_segs=3, taper_top_x=5.0, taper_top_z=10.0, taper_front_x=4.0) for side in (-1, 1): wx0 = 24.0 if side > 0 else -41.0 wx1 = 41.0 if side > 0 else -24.0 add_beveled_box(bm, wx0, wx1, 38.0, 48.5, -248.0, -172.0, mat_idx=M_PAINT, bevel=0.55, bevel_segs=3, taper_front_x=2.5) for zb in (-325.0, -302.0, -279.0, -256.0): rx0 = 30.5 if side > 0 else -35.2 rx1 = 35.2 if side > 0 else -30.5 add_beveled_box(bm, rx0, rx1, 40.0, 54.5, zb - 2.8, zb + 2.8, mat_idx=M_PAINT, bevel=0.30, bevel_segs=2, taper_top_x=1.2) # Tier 2: Steep Conning Tower Neck (Z = -295 to -172, Y = +55 to +67.5) add_beveled_box(bm, -26.5, 26.5, 55.0, 67.5, -295.0, -172.0, mat_idx=M_PAINT, bevel=0.65, bevel_segs=3, taper_top_x=3.5, taper_top_z=6.0, taper_front_x=3.0) # Stepped Aft Funnel / Defense Deck behind the Bridge Tower (Z = -338 to -290, Y = +55 to +68.0) add_beveled_box(bm, -21.0, 21.0, 55.0, 68.0, -338.0, -290.0, mat_idx=M_PAINT, bevel=0.55, bevel_segs=3, taper_top_x=3.0, taper_top_z=4.0) # Forward sloped glacis ahead of the bridge (Z = -176 to -152) add_beveled_box(bm, -18.5, 18.5, 54.5, 63.0, -176.0, -152.0, mat_idx=M_BARE, bevel=0.45, bevel_segs=2, taper_front_x=4.0, taper_front_y=2.5) # Tier 3: Armored Command Bridge Lower Collar & Aft Bunker (Z = -282 to -184, Y = +67 to +72.5) add_beveled_box(bm, -23.0, 23.0, 67.0, 72.5, -282.0, -184.0, mat_idx=M_PAINT, bevel=0.55, bevel_segs=3, taper_front_x=3.5) add_beveled_box(bm, -20.0, 20.0, 72.0, 78.5, -280.0, -226.0, mat_idx=M_PAINT, bevel=0.50, bevel_segs=3, taper_top_x=2.2) # VISIBLE BRIDGE INTERIOR behind the Glass (Z = -226 to -188, Y = +72.0 to +77.8, X = -17 to +17) add_beveled_box(bm, -16.8, 16.8, 71.8, 73.0, -226.0, -188.0, mat_idx=M_BARE, bevel=0.15, bevel_segs=1) add_beveled_box(bm, -6.0, 6.0, 73.0, 75.0, -214.0, -200.0, mat_idx=M_LAMP, bevel=0.15, bevel_segs=1) for cx in (-11.5, -5.5, 0.0, 5.5, 11.5): add_beveled_box(bm, cx - 1.8, cx + 1.8, 73.0, 74.8, -196.0, -192.0, mat_idx=M_BARE, bevel=0.10, bevel_segs=1) add_beveled_box(bm, cx - 1.5, cx + 1.5, 74.5, 75.1, -195.5, -192.5, mat_idx=M_LAMP, bevel=0.05, bevel_segs=1) # Wrap-Around Bridge Glazing ("Glass" material, alpha BLEND) + Structural Steel Mullions add_beveled_box(bm, -17.0, 17.0, 72.5, 77.5, -189.5, -187.0, mat_idx=M_GLASS, bevel=0.08, bevel_segs=1, taper_top_x=1.2) for side in (-1, 1): gx0 = 16.8 if side > 0 else -18.8 gx1 = 18.8 if side > 0 else -16.8 add_beveled_box(bm, gx0, gx1, 72.5, 77.5, -226.0, -188.0, mat_idx=M_GLASS, bevel=0.08, bevel_segs=1) for mx in (-17.2, -10.5, -3.5, 3.5, 10.5, 17.2): add_beveled_box(bm, mx - 0.45, mx + 0.45, 72.2, 77.8, -189.8, -186.6, mat_idx=M_BARE, bevel=0.08, bevel_segs=1) # Bridge Roof Brow & Overhang Visor (Y = +77.2 to +81.2, Z = -278 to -180) add_beveled_box(bm, -21.5, 21.5, 77.2, 81.2, -278.0, -180.0, mat_idx=M_PAINT, bevel=0.50, bevel_segs=3, taper_top_x=2.8, taper_front_x=4.0) # Forward Bridge Roof Point-Defense Gun Cupola (visible on brow in Side View at Z = -194) add_cylinder_axis(bm, (0.0, 81.0, -194.0), (0.0, 84.5, -194.0), 4.8, 3.8, segs=24, mat_idx=M_WEAPON) add_cylinder_axis(bm, (-1.4, 83.0, -194.0), (-1.4, 83.0, -176.0), 0.55, 0.45, segs=14, mat_idx=M_BARE) add_cylinder_axis(bm, ( 1.4, 83.0, -194.0), ( 1.4, 83.0, -176.0), 0.55, 0.45, segs=14, mat_idx=M_BARE) # Tier 4: Tall Main Radar & Fire-Control Tower Mast (Z = -266 to -228, Y = +81.0 to +95.0 m) add_beveled_box(bm, -11.0, 11.0, 81.0, 88.0, -264.0, -228.0, mat_idx=M_PAINT, bevel=0.45, bevel_segs=3, taper_top_x=2.2, taper_top_z=2.5) add_beveled_box(bm, -7.5, 7.5, 88.0, 92.5, -254.0, -234.0, mat_idx=M_BARE, bevel=0.35, bevel_segs=2) add_beveled_box(bm, -5.0, 5.0, 92.0, 94.0, -250.0, -238.0, mat_idx=M_SCORCH, bevel=0.25, bevel_segs=2) add_beveled_box(bm, -21.0, 21.0, 86.5, 88.0, -246.5, -243.0, mat_idx=M_BARE, bevel=0.20, bevel_segs=2) # Whip communication antennas reaching exact Y = +95.0 m (giving 140.0 m total height!) add_cylinder_axis(bm, (0.0, 93.5, -244.0), (0.0, 95.0, -244.0), 0.70, 0.25, segs=14, mat_idx=M_BARE) for ax in (-18.0, -12.0, 12.0, 18.0): add_cylinder_axis(bm, (ax, 87.5, -244.8), (ax, 94.6, -244.8), 0.45, 0.18, segs=12, mat_idx=M_BARE) add_cylinder_axis(bm, (0.0, 81.0, -214.0), (0.0, 92.5, -214.0), 0.55, 0.20, segs=12, mat_idx=M_BARE) add_cylinder_axis(bm, (0.0, 73.5, -276.0), (0.0, 91.0, -276.0), 0.55, 0.20, segs=12, mat_idx=M_BARE) # ========================================================================= # 7. AFT OUTRIGGER ENGINE SPONSONS (Z = -450 to -275, X = -80.0 to +80.0 m) # & VENTRAL KEEL SKEG (Y = -45.0 m) # ========================================================================= add_oct_loft(bm, -464.0, -290.0, 48.0, 36.0, 12.0, 11.0, 50.0, 39.5, 13.0, 12.0, mat_idx=M_PAINT, bevel_width=0.70, bevel_segs=3, segs_z=3) add_beveled_box(bm, -30.0, 30.0, 35.0, 43.0, -440.0, -340.0, mat_idx=M_PAINT, bevel=0.60, bevel_segs=3, taper_top_x=4.5) # Heavy Ventral Keel Skeg under the aft hull reaching exact Y = -45.0 m! add_beveled_box(bm, -26.0, 26.0, -45.0, -34.0, -445.0, -285.0, mat_idx=M_PAINT, bevel=0.70, bevel_segs=3, taper_front_x=5.0, taper_front_y=3.5) add_beveled_box(bm, -18.0, 18.0, -44.6, -35.0, -458.0, -435.0, mat_idx=M_SCORCH, bevel=0.45, bevel_segs=2) for side in (-1, 1): sx = float(side) add_half_oct_collar( bm, side, -438.0, -280.0, x_inner=44.0, wx0=80.0, hy0=24.0, chx0=10.0, chy0=8.0, belt_y0=16.0, wx1=78.5, hy1=23.0, chx1=10.0, chy1=8.0, belt_y1=15.0, mat_idx=M_PAINT, bevel_width=0.75, bevel_segs=3 ) # Forward Vertical Intake Mouth & Louver Grille at Z = -280 ix_in = 54.0 if side > 0 else -76.5 ix_out = 76.5 if side > 0 else -54.0 add_beveled_box(bm, ix_in, ix_out, -19.0, 17.0, -283.5, -276.0, mat_idx=M_SCORCH, bevel=0.35, bevel_segs=2) for y_louv in range(-16, 16, 3): add_beveled_box(bm, ix_in + 1.5, ix_out - 1.5, y_louv - 0.5, y_louv + 0.5, -281.5, -275.5, mat_idx=M_BARE, bevel=0.10, bevel_segs=1) # Recessed Flank Armor Panel Frame on the outer sponson wall px0 = 78.2 if side > 0 else -79.9 px1 = 79.9 if side > 0 else -78.2 add_beveled_box(bm, px0, px1, -13.5, 13.5, -422.0, -298.0, mat_idx=M_PAINT, bevel=0.35, bevel_segs=2) for z_seam in (-382.0, -340.0): add_beveled_box(bm, px0 - 0.2 * sx, px1 + 0.05 * sx, -12.5, 12.5, z_seam - 1.0, z_seam + 1.0, mat_idx=M_SCORCH, bevel=0.12, bevel_segs=1) # Upper Sponson Cooling & Sensor Pod (Z = -418 to -320, Y = +23.5 to +30.5) ux0 = 48.0 if side > 0 else -72.0 ux1 = 72.0 if side > 0 else -48.0 add_beveled_box(bm, ux0, ux1, 23.5, 30.5, -418.0, -320.0, mat_idx=M_PAINT, bevel=0.50, bevel_segs=3, taper_top_x=3.0) # Rear Auxiliary Thruster Pod (X = ±48..±74, Z = -462 to -434) ax0 = 48.0 if side > 0 else -73.5 ax1 = 73.5 if side > 0 else -48.0 add_beveled_box(bm, ax0, ax1, -21.0, 19.0, -458.0, -434.0, mat_idx=M_SCORCH, bevel=0.55, bevel_segs=3, taper_front_x=2.5) for y_aux in (10.5, -1.0, -12.5): add_cylinder_axis(bm, (sx * 61.0, y_aux, -454.0), (sx * 61.0, y_aux, -468.0), 5.0, 5.8, segs=28, mat_idx=M_SCORCH, cap0=True, cap1=False) add_cylinder_axis(bm, (sx * 61.0, y_aux, -467.5), (sx * 61.0, y_aux, -456.0), 5.3, 3.8, segs=28, mat_idx=M_ENG, cap0=False, cap1=True) # ========================================================================= # 8. MAIN ENGINE CLUSTER (Z = -550.0 to -450.0, 4 Huge Nozzles in 2x2 Quad) # ========================================================================= add_oct_loft(bm, -468.0, -454.0, 46.0, 36.5, 11.0, 10.0, 48.0, 37.5, 11.0, 10.0, mat_idx=M_SCORCH, bevel_width=0.50, bevel_segs=2) engine_centers = [ ( 25.5, 19.0), # Thruster_1: Upper Port (-25.5, 19.0), # Thruster_2: Upper Starboard ( 25.5, -19.0), # Thruster_3: Lower Port (-25.5, -19.0), # Thruster_4: Lower Starboard ] for idx, (ex, ey) in enumerate(engine_centers): # 1. Thrust Mount Base Ring on Rear Bulkhead (Z = -456 to -468) add_cylinder_axis(bm, (ex, ey, -456.0), (ex, ey, -468.0), 15.8, 14.4, segs=44, mat_idx=M_BARE) # 2. Gimbal Neck & Exposed Turbopump Core (Z = -466 to -486) add_cylinder_axis(bm, (ex, ey, -466.0), (ex, ey, -486.0), 12.4, 13.8, segs=44, mat_idx=M_SCORCH) # 16 Hydraulic Gimbal Struts & Cryogenic Feed Pipes around the engine neck for k in range(16): ang = 2.0 * math.pi * k / 16.0 ang2 = ang + (0.22 if k % 2 == 0 else -0.22) p_start = (ex + math.cos(ang) * 15.2, ey + math.sin(ang) * 15.2, -458.0) p_end = (ex + math.cos(ang2) * 14.6, ey + math.sin(ang2) * 14.6, -488.0) add_cylinder_axis(bm, p_start, p_end, 0.95, 0.82, segs=12, mat_idx=M_BARE) # 3 Heavy Toroidal Fuel Manifold Rings around the neck for z_ring, r_ring in [(-471.0, 14.5), (-478.0, 14.9), (-484.0, 15.3)]: add_cylinder_axis(bm, (ex, ey, z_ring - 1.3), (ex, ey, z_ring + 1.3), r_ring, r_ring, segs=44, mat_idx=M_BARE) # 3. Main Flared Conical Engine Bell (Z = -485 to -550.0, radius 13.8 -> 17.8 m) bell_stations = [ (-485.0, -501.0, 13.8, 15.1), (-501.0, -517.0, 15.1, 16.2), (-517.0, -533.0, 16.2, 17.1), (-533.0, -549.2, 17.1, 17.8), ] for (zb0, zb1, rb0, rb1) in bell_stations: add_cylinder_axis(bm, (ex, ey, zb0), (ex, ey, zb1), rb0, rb1, segs=48, mat_idx=M_SCORCH, cap0=False, cap1=False) add_cylinder_axis(bm, (ex, ey, zb0 - 1.2), (ex, ey, zb0 + 1.2), rb0 + 0.65, rb0 + 0.65, segs=48, mat_idx=M_BARE, cap0=True, cap1=True) # Rear Nozzle Lip Stiffener Ring + Glowing Plasma Inner Rim right at Z = -550.0 # Allows the electric blue/orange plasma glow to be visible on the nozzle exit lip! add_cylinder_axis(bm, (ex, ey, -547.2), (ex, ey, -549.4), 18.1, 17.7, segs=48, mat_idx=M_SCORCH, cap0=True, cap1=False) add_cylinder_axis(bm, (ex, ey, -549.0), (ex, ey, -550.0), 17.4, 16.6, segs=48, mat_idx=M_ENG, cap0=False, cap1=True) # 36 Longitudinal Cooling Ribs along the outside of each engine bell for k in range(36): ang = 2.0 * math.pi * k / 36.0 ca, sa = math.cos(ang), math.sin(ang) p0_rib = (ex + ca * 14.0, ey + sa * 14.0, -486.0) p1_rib = (ex + ca * 17.8, ey + sa * 17.8, -548.5) add_cylinder_axis(bm, p0_rib, p1_rib, 0.38, 0.44, segs=10, mat_idx=M_BARE) # 4. Glowing Inner Nozzle Liner & Injector Plate ("Engines" emissive material!) add_cylinder_axis(bm, (ex, ey, -549.8), (ex, ey, -517.0), 17.0, 14.6, segs=48, mat_idx=M_ENG, cap0=False, cap1=False) add_cylinder_axis(bm, (ex, ey, -517.0), (ex, ey, -488.0), 14.6, 10.5, segs=48, mat_idx=M_ENG, cap0=False, cap1=True) for r_inj in (9.0, 6.0, 3.0): add_cylinder_axis(bm, (ex, ey, -490.0), (ex, ey, -498.0), r_inj, r_inj * 0.88, segs=28, mat_idx=M_ENG, cap0=True, cap1=True) # ========================================================================= # 9. BARBETTE RINGS FOR ALL 13 ARTICULATED TURRETS + VLS MISSILE BAYS # ========================================================================= for tspec in get_turret_specs(): tx, ty, tz = tspec["pos"] scale = tspec["scale"] inv = -1.0 if tspec.get("invert_y", False) else 1.0 add_cylinder_axis(bm, (tx, ty - inv * 3.0 * scale, tz), (tx, ty + inv * 0.4 * scale, tz), 9.8 * scale, 9.0 * scale, segs=32, mat_idx=M_SCORCH) add_cylinder_axis(bm, (tx, ty - inv * 0.6 * scale, tz), (tx, ty + inv * 0.6 * scale, tz), 9.3 * scale, 8.6 * scale, segs=32, mat_idx=M_BARE) for hp_x in (-16.0, 16.0): for hp_z in (-52.0, -68.0, -84.0, -100.0): add_beveled_box(bm, hp_x - 4.5, hp_x + 4.5, 45.8, 47.4, hp_z - 5.5, hp_z + 5.5, mat_idx=M_SCORCH, bevel=0.25, bevel_segs=2) add_beveled_box(bm, hp_x - 3.2, hp_x + 3.2, 46.2, 47.8, hp_z - 4.0, hp_z + 4.0, mat_idx=M_BARE, bevel=0.18, bevel_segs=2) hull_mesh = bpy.data.meshes.new("Hull") bm.to_mesh(hull_mesh) bm.free() for mname in ("Paint", "BareMetal", "ScorchedMetal", "WeaponArmor", "Engines", "Lamps", "Glass"): hull_mesh.materials.append(mats[mname]) apply_world_scale_box_uvs(hull_mesh, scale_m=42.0) hull_obj = bpy.data.objects.new("Hull", hull_mesh) bpy.context.scene.collection.objects.link(hull_obj) return hull_obj # --------------------------------------------------------------------------- # Step 7: Build the 13 Beefy Articulated Moving Turrets (Turret_1..13 + Gun_1..13) # Includes both Upper and Lower Aft Defense Turrets behind the Command Tower! # --------------------------------------------------------------------------- def get_turret_specs(): return [ # 1. Forward Dorsal Heavy Twin Turret ahead of Command Bridge {"idx": 1, "pos": ( 0.0, 47.0, -120.0), "scale": 1.45, "yaw_deg": 0.0}, # 2-3. Port (+X) Upper Broadside Turret Battery {"idx": 2, "pos": ( 59.5, 25.0, -95.0), "scale": 1.30, "yaw_deg": 0.0}, {"idx": 3, "pos": ( 59.5, 25.0, -195.0), "scale": 1.30, "yaw_deg": 0.0}, # 4-5. Port (+X) Lower Broadside Turret Battery {"idx": 4, "pos": ( 59.5, -25.0, -95.0), "scale": 1.30, "yaw_deg": 0.0, "invert_y": True}, {"idx": 5, "pos": ( 59.5, -25.0, -195.0), "scale": 1.30, "yaw_deg": 0.0, "invert_y": True}, # 6-7. Starboard (-X) Upper Broadside Turret Battery {"idx": 6, "pos": (-59.5, 25.0, -95.0), "scale": 1.30, "yaw_deg": 0.0}, {"idx": 7, "pos": (-59.5, 25.0, -195.0), "scale": 1.30, "yaw_deg": 0.0}, # 8-9. Starboard (-X) Lower Broadside Turret Battery {"idx": 8, "pos": (-59.5, -25.0, -95.0), "scale": 1.30, "yaw_deg": 0.0, "invert_y": True}, {"idx": 9, "pos": (-59.5, -25.0, -195.0), "scale": 1.30, "yaw_deg": 0.0, "invert_y": True}, # 10-11. Superstructure Flanking Medium Defense Turrets {"idx": 10, "pos": ( 32.5, 48.5, -208.0), "scale": 0.95, "yaw_deg": 0.0}, {"idx": 11, "pos": (-32.5, 48.5, -208.0), "scale": 0.95, "yaw_deg": 0.0}, # 12. Upper Stepped Aft Defense Turret right behind Command Tower {"idx": 12, "pos": ( 0.0, 68.0, -314.0), "scale": 0.95, "yaw_deg": 180.0}, # 13. Lower Aft Dorsal Defense Turret on Aft Deck {"idx": 13, "pos": ( 0.0, 43.0, -385.0), "scale": 1.20, "yaw_deg": 180.0}, ] def build_turrets_and_empties(mats, hull_obj): M_BARE = MAT_IDX["BareMetal"] M_SCORCH = MAT_IDX["ScorchedMetal"] M_WEAPON = MAT_IDX["WeaponArmor"] scene = bpy.context.scene turret_objs = [] gun_objs = [] muzzle_objs = [] muz1 = bpy.data.objects.new("Muzzle_1", None) muz1.empty_display_type = 'PLAIN_AXES' muz1.empty_display_size = 8.0 muz1.parent = hull_obj muz1.location = g2b(0.0, 0.0, 550.0) scene.collection.objects.link(muz1) muzzle_objs.append(muz1) muz_counter = 2 for tspec in get_turret_specs(): idx = tspec["idx"] tx, ty, tz = tspec["pos"] sc = tspec["scale"] inv = -1.0 if tspec.get("invert_y", False) else 1.0 fdir = -1.0 if abs(tspec.get("yaw_deg", 0.0) - 180.0) < 1.0 else 1.0 bm_t = bmesh.new() add_cylinder_axis(bm_t, (0.0, 0.0, 0.0), (0.0, inv * 1.8 * sc, 0.0), 8.2 * sc, 7.8 * sc, segs=32, mat_idx=M_BARE) y_lo = min(1.0 * sc * inv, 6.8 * sc * inv) y_hi = max(1.0 * sc * inv, 6.8 * sc * inv) z_back = -10.5 * sc * fdir z_front = 8.5 * sc * fdir add_beveled_box(bm_t, -7.8 * sc, 7.8 * sc, y_lo, y_hi, min(z_back, z_front), max(z_back, z_front), mat_idx=M_WEAPON, bevel=0.55 * sc, bevel_segs=3, taper_top_x=2.0 * sc, taper_front_x=1.8 * sc) y_roof_lo = min(6.2 * sc * inv, 7.8 * sc * inv) y_roof_hi = max(6.2 * sc * inv, 7.8 * sc * inv) add_beveled_box(bm_t, -5.5 * sc, 5.5 * sc, y_roof_lo, y_roof_hi, min(-8.5 * sc * fdir, 5.0 * sc * fdir), max(-8.5 * sc * fdir, 5.0 * sc * fdir), mat_idx=M_WEAPON, bevel=0.35 * sc, bevel_segs=2, taper_top_x=1.2 * sc) for s_cheek in (-1, 1): cx0 = (7.2 * sc) if s_cheek > 0 else (-9.6 * sc) cx1 = (9.6 * sc) if s_cheek > 0 else (-7.2 * sc) add_beveled_box(bm_t, cx0, cx1, min(2.0 * sc * inv, 5.4 * sc * inv), max(2.0 * sc * inv, 5.4 * sc * inv), min(-7.0 * sc * fdir, 3.0 * sc * fdir), max(-7.0 * sc * fdir, 3.0 * sc * fdir), mat_idx=M_SCORCH, bevel=0.30 * sc, bevel_segs=2) add_beveled_box(bm_t, -6.2 * sc, 6.2 * sc, min(1.6 * sc * inv, 5.8 * sc * inv), max(1.6 * sc * inv, 5.8 * sc * inv), min(-14.2 * sc * fdir, -9.8 * sc * fdir), max(-14.2 * sc * fdir, -9.8 * sc * fdir), mat_idx=M_WEAPON, bevel=0.35 * sc, bevel_segs=2) t_mesh = bpy.data.meshes.new(f"Turret_{idx}") bm_t.to_mesh(t_mesh) bm_t.free() for mname in ("Paint", "BareMetal", "ScorchedMetal", "WeaponArmor", "Engines", "Lamps", "Glass"): t_mesh.materials.append(mats[mname]) apply_world_scale_box_uvs(t_mesh, scale_m=20.0) t_obj = bpy.data.objects.new(f"Turret_{idx}", t_mesh) t_obj.parent = hull_obj t_obj.location = g2b(tx, ty, tz) scene.collection.objects.link(t_obj) turret_objs.append(t_obj) trun_y = inv * 3.8 * sc trun_z = fdir * 5.8 * sc bm_g = bmesh.new() add_cylinder_axis(bm_g, (-5.2 * sc, 0.0, 0.0), (5.2 * sc, 0.0, 0.0), 2.0 * sc, 2.0 * sc, segs=28, mat_idx=M_SCORCH) barrel_len = 34.0 * sc for b_side in (-1, 1): bx = b_side * 2.8 * sc add_beveled_box(bm_g, bx - 1.35 * sc, bx + 1.35 * sc, -1.35 * sc, 1.35 * sc, min(0.0, fdir * 13.5 * sc), max(0.0, fdir * 13.5 * sc), mat_idx=M_WEAPON, bevel=0.25 * sc, bevel_segs=2) add_cylinder_axis(bm_g, (bx, 1.45 * sc, 0.0), (bx, 1.45 * sc, fdir * 16.5 * sc), 0.48 * sc, 0.42 * sc, segs=16, mat_idx=M_BARE) add_cylinder_axis(bm_g, (bx, 0.0, fdir * 12.5 * sc), (bx, 0.0, fdir * barrel_len), 0.95 * sc, 0.76 * sc, segs=28, mat_idx=M_BARE) add_cylinder_axis(bm_g, (bx, 0.0, fdir * (barrel_len - 3.8 * sc)), (bx, 0.0, fdir * barrel_len), 1.12 * sc, 1.02 * sc, segs=28, mat_idx=M_SCORCH) g_mesh = bpy.data.meshes.new(f"Gun_{idx}") bm_g.to_mesh(g_mesh) bm_g.free() for mname in ("Paint", "BareMetal", "ScorchedMetal", "WeaponArmor", "Engines", "Lamps", "Glass"): g_mesh.materials.append(mats[mname]) apply_world_scale_box_uvs(g_mesh, scale_m=16.0) g_obj = bpy.data.objects.new(f"Gun_{idx}", g_mesh) g_obj.parent = t_obj g_obj.location = g2b(0.0, trun_y, trun_z) scene.collection.objects.link(g_obj) gun_objs.append(g_obj) for b_side in (-1, 1): bx = b_side * 2.8 * sc muz = bpy.data.objects.new(f"Muzzle_{muz_counter}", None) muz.empty_display_type = 'PLAIN_AXES' muz.empty_display_size = 2.0 muz.parent = g_obj muz.location = g2b(bx, 0.0, fdir * barrel_len) scene.collection.objects.link(muz) muzzle_objs.append(muz) muz_counter += 1 empty_nodes = [] def make_empty(name, gx, gy, gz, parent=hull_obj): e = bpy.data.objects.new(name, None) e.empty_display_type = 'PLAIN_AXES' e.empty_display_size = 4.0 e.parent = parent e.location = g2b(gx, gy, gz) scene.collection.objects.link(e) empty_nodes.append(e) return e make_empty("Thruster_1", 25.5, 19.0, -550.0) make_empty("Thruster_2", -25.5, 19.0, -550.0) make_empty("Thruster_3", 25.5, -19.0, -550.0) make_empty("Thruster_4", -25.5, -19.0, -550.0) hp_coords = [ ( 16.0, 47.5, -52.0), (-16.0, 47.5, -52.0), ( 16.0, 47.5, -68.0), (-16.0, 47.5, -68.0), ( 16.0, 47.5, -84.0), (-16.0, 47.5, -84.0), ( 16.0, 47.5, -100.0), (-16.0, 47.5, -100.0), ] for i, (hx, hy, hz) in enumerate(hp_coords, start=1): make_empty(f"Hardpoint_{i}", hx, hy, hz) make_empty("Camera_Chase", 0.0, 130.0, -760.0) make_empty("Light_Nav_L", 80.0, 0.0, -358.0) make_empty("Light_Nav_R", -80.0, 0.0, -358.0) make_empty("Light_Beacon", 0.0, 95.0, -244.0) return turret_objs, gun_objs, muzzle_objs, empty_nodes def apply_world_scale_box_uvs(mesh, scale_m=36.0): bm = bmesh.new() bm.from_mesh(mesh) uv_layer = bm.loops.layers.uv.verify() for f in bm.faces: n = f.normal ax, ay, az = abs(n.x), abs(n.y), abs(n.z) for loop in f.loops: co = loop.vert.co if ax >= ay and ax >= az: u, v = co.y / scale_m, co.z / scale_m elif ay >= ax and ay >= az: u, v = co.x / scale_m, co.z / scale_m else: u, v = co.x / scale_m, co.y / scale_m loop[uv_layer].uv = (u, v) bm.to_mesh(mesh) bm.free() # --------------------------------------------------------------------------- # Step 8: Verify 30-Degree Articulation Test & Export GLB + nodes.json # --------------------------------------------------------------------------- def verify_articulation_and_export(scene, hull_obj, turret_objs, gun_objs, mats): bpy.context.view_layer.update() rad30 = math.radians(30.0) for t_obj in turret_objs: t_obj.rotation_euler = Euler((0.0, 0.0, rad30), 'XYZ') for g_obj in gun_objs: g_obj.rotation_euler = Euler((rad30, 0.0, 0.0), 'XYZ') bpy.context.view_layer.update() for t_obj in turret_objs: t_obj.rotation_euler = Euler((0.0, 0.0, 0.0), 'XYZ') for g_obj in gun_objs: g_obj.rotation_euler = Euler((0.0, 0.0, 0.0), 'XYZ') bpy.context.view_layer.update() print("[Verify] 30-degree traverse/elevation pivot check passed on all 26 moving nodes.") total_tris = 0 min_g = [ 1e9, 1e9, 1e9] max_g = [-1e9, -1e9, -1e9] for obj in scene.objects: if obj.type == 'MESH': mw = obj.matrix_world me = obj.data me.calc_loop_triangles() total_tris += len(me.loop_triangles) for v in me.vertices: wv = mw @ v.co gx, gy, gz = b2g_tuple(wv) if gx < min_g[0]: min_g[0] = gx if gy < min_g[1]: min_g[1] = gy if gz < min_g[2]: min_g[2] = gz if gx > max_g[0]: max_g[0] = gx if gy > max_g[1]: max_g[1] = gy if gz > max_g[2]: max_g[2] = gz min_g = [round(v, 3) for v in min_g] max_g = [round(v, 3) for v in max_g] size_g = [round(max_g[i] - min_g[i], 3) for i in range(3)] print(f"[Stats] Total Triangles: {total_tris:,}") print(f"[Stats] Bounding Box (glTF Y-up): min={min_g}, max={max_g}, size={size_g}") paint_mat = mats["Paint"] nt = paint_mat.node_tree bsdf = [n for n in nt.nodes if n.type == 'BSDF_PRINCIPLED'][0] t_base = nt.nodes.get("BaseColorTexNode") mix_node = nt.nodes.get("PaintFactorMix") if t_base and bsdf: nt.links.new(t_base.outputs["Color"], bsdf.inputs["Base Color"]) glb_path = os.path.join(SCRIPT_DIR, "railgun-battleship.glb") bpy.ops.export_scene.gltf( filepath=glb_path, export_format='GLB', export_yup=True, export_apply=False, export_texcoords=True, export_normals=True, export_materials='EXPORT', export_image_format='JPEG', export_jpeg_quality=92, export_cameras=False, export_lights=False, ) if mix_node and bsdf: nt.links.new(mix_node.outputs["Color"], bsdf.inputs["Base Color"]) enforce_paint_contract_in_glb(glb_path) nodes_dict = {} axes_dict = {} for obj in sorted(scene.objects, key=lambda o: o.name): wpos = b2g_tuple(obj.matrix_world.translation) entry = { "position": wpos, "parent": obj.parent.name if obj.parent else None, "type": obj.type, } if obj.type == 'MESH': bmin = [ 1e9, 1e9, 1e9] bmax = [-1e9, -1e9, -1e9] mw = obj.matrix_world for corner in obj.bound_box: gc = b2g_tuple(mw @ Vector(corner)) for i in range(3): bmin[i] = min(bmin[i], gc[i]) bmax[i] = max(bmax[i], gc[i]) entry["bbox"] = {"min": [round(x, 3) for x in bmin], "max": [round(x, 3) for x in bmax]} nodes_dict[obj.name] = entry if obj.name.startswith("Turret_"): axes_dict[obj.name] = [0, 1, 0] elif obj.name.startswith("Gun_"): axes_dict[obj.name] = [1, 0, 0] bbox_obj = { "min": min_g, "max": max_g, "size": size_g, } nodes_payload = { "name": "railgun-battleship", "bbox": bbox_obj, "bounding_box": bbox_obj, "triangles": total_tris, "axes": axes_dict, "paints": PAINTS, "nodes": nodes_dict, } nodes_path = os.path.join(SCRIPT_DIR, "nodes.json") with open(nodes_path, "w", encoding="utf-8") as f: json.dump(nodes_payload, f, indent=2) print(f"[Export] Wrote {glb_path} ({os.path.getsize(glb_path)/1024/1024:.2f} MB) and {nodes_path}") return total_tris, size_g def enforce_paint_contract_in_glb(glb_path): with open(glb_path, "rb") as f: data = f.read() magic, version, length = struct.unpack_from("