""" Prospero Brazier (Blender bpy) - standalone. A small resin-printable scatter piece: a shallow stone bowl on 4 stubby feet, sized as a decoration prop roughly half the height of a 28mm miniature (see illustrations/v6_brazier.png, v7_brazier.png). The flame itself is NOT modeled here - it's a separate clear/tinted resin insert or painted detail, not part of this stone piece. Pass 1 (this version): bowl + feet only, no rim glyph texture yet - get the proportions right before adding surface detail (same discipline used throughout the illustration pass: one change at a time, verify, then add the next). Run: Blender -> Scripting workspace -> Open this file -> Alt+P Or headless: blender --background --python brazier.py """ import bpy import bmesh import math import mathutils import os # ============================================================ # CONFIG # ============================================================ EXPORT_DIR = "/Users/mannil/Desktop/studio-m/TSONS/brazier/output" EXPORT_STL = True RENDER_IMAGES = True RENDER_DIR = os.path.join(EXPORT_DIR, "renders") RENDER_RESOLUTION = (1600, 900) RENDER_ANGLES = { "front": (0.0, -1.0, 0.15), "side": (1.0, -0.1, 0.15), "top": (0.001, -0.3, 1.0), "iso": (0.6, -1.0, 0.6), } # Brazier assembly, in mm - 3 visually distinct parts stacked bottom to # top, each its own primitive unioned together (not one continuous lathe # profile): a flat solid base disc, a curved bowl body sitting on it, and # a flat ring plate capping the rim. Feet hang below the base disc. # Total finished height targets ~half a 28mm miniature (~32mm figure # height), so ~14-16mm overall. EMBED = 0.6 # overlap depth between unioned parts - avoids coincident-face # boolean degeneracy (see feedback_blender_boolean_fragility) BASE_DISC_R = 6.0 # radius of the flat base disc BASE_DISC_H = 1.0 # thickness of the flat base disc BODY_R_BOTTOM = 5.2 # body's outer radius where it rises from the disc BODY_R_SHOULDER = 8.0 # body's outer radius at the shoulder (top of the curve) BODY_H = 5.0 # height of the curved body, disc top to shoulder WALL_T = 1.3 # body wall thickness (outer - inner radius) BOWL_PROFILE_STEPS = 10 # points along the curved body wall LIP_R_IN = BODY_R_SHOULDER - WALL_T - 0.4 # ring's inner radius (laps onto the body's opening) LIP_R_OUT = 8.6 # ring's outer radius - a modest overhang past the shoulder, not a big flat disc LIP_H = 0.9 # thickness of the flat rim ring plate BODY_STRAIGHT_H = 1.0 # short straight vertical collar at each end of the # body wall, so the disc/ring overlap zones meet a # constant-radius cylinder rather than the tangent # (near-zero-slope) end of the eased curve - avoids # coincident-ish faces that corrupt the EXACT solver SPIN_STEPS = 128 # circle segment count for the lathed parts (disc, body, # ring) - high enough that the curve prints smooth/round # rather than visibly faceted at this small scale # Feet: 4 short chunky carved-stone-block feet (tapered rectangular # blocks, not turned pegs), diamond-oriented at the corners to match the # reference art rather than cardinal N/S/E/W. FOOT_COUNT = 4 FOOT_H = 2.0 FOOT_W_TOP = 2.6 # block width/depth where it meets the base disc FOOT_W_BOTTOM = 2.0 # block width/depth at the ground (tapers inward) FOOT_RADIAL_OFFSET = BASE_DISC_R - 1.2 # distance from center axis FOOT_ANGLE_OFFSET_DEG = 45.0 # diamond orientation # Rim glyph band: reuses the same pixel-mask emboss technique as # runes/rune_panel_v1_plain.py, wrapped around the body's outer wall # instead of stamped onto a flat panel. One glyph per GLYPH_POOL entry, # evenly spaced around the full circle. GLYPH_DIR = "/Users/mannil/Desktop/studio-m/TSONS/assets/rune_marks" GLYPH_POOL = [ "manifestation", "decay", "binding", "chaos", "cycle", "void", "dominion", "earth", "entropy", "fire", "flow", "will", "life", "growth", "transcendence", "sacred", ] # Glyphs are cut (engraved) into the ring's flat TOP face, in the # annulus between LIP_R_IN and LIP_R_OUT - not embossed on the body wall. RIM_GLYPH_W = 2.0 # glyph footprint width (tangential direction), mm RIM_GLYPH_H = 2.2 # glyph footprint height (radial direction), mm - must # fit inside the ring's annulus width (LIP_R_OUT-LIP_R_IN) RIM_GLYPH_CUT_DEPTH = 0.4 # how deep the engraving cuts into the ring RIM_GLYPH_CUT_CLEARANCE = 0.3 # how far the cutter pokes above the top face RUNE_ALPHA_THRESHOLD = 0.15 RUNE_STROKE_DILATE = 1 MASK_SUPERSAMPLE = 6 MASK_BLUR_RADIUS = 8 MESH_SMOOTH_ITERATIONS = 3 MESH_SMOOTH_FACTOR = 0.5 # ============================================================ # HELPERS (shared conventions - see runes/rune_panel_v1_plain.py) # ============================================================ def clear_scene(): bpy.ops.object.select_all(action='SELECT') bpy.ops.object.delete() for block in list(bpy.data.meshes): bpy.data.meshes.remove(block) def apply_boolean(target, cutter, operation): mod = target.modifiers.new("Bool", 'BOOLEAN') mod.object = cutter mod.operation = operation mod.solver = 'EXACT' bpy.context.view_layer.objects.active = target bpy.ops.object.modifier_apply(modifier=mod.name) bpy.data.objects.remove(cutter, do_unlink=True) def compute_scene_bounds(): xs, ys, zs = [], [], [] for obj in bpy.context.scene.objects: if obj.type != 'MESH': continue for corner in obj.bound_box: world_corner = obj.matrix_world @ mathutils.Vector(corner) xs.append(world_corner.x) ys.append(world_corner.y) zs.append(world_corner.z) if not xs: return mathutils.Vector((0.0, 0.0, 0.0)), 10.0 center = mathutils.Vector(( (min(xs) + max(xs)) / 2, (min(ys) + max(ys)) / 2, (min(zs) + max(zs)) / 2, )) size = max(max(xs) - min(xs), max(ys) - min(ys), max(zs) - min(zs)) return center, size def setup_camera_and_light(center): cam_data = bpy.data.cameras.new("RenderCam") cam_obj = bpy.data.objects.new("RenderCam", cam_data) bpy.context.collection.objects.link(cam_obj) target = bpy.data.objects.new("RenderTarget", None) target.location = center bpy.context.collection.objects.link(target) track = cam_obj.constraints.new(type='TRACK_TO') track.target = target track.track_axis = 'TRACK_NEGATIVE_Z' track.up_axis = 'UP_Y' light_data = bpy.data.lights.new("RenderSun", type='SUN') light_data.energy = 3.0 light_obj = bpy.data.objects.new("RenderSun", light_data) light_obj.rotation_euler = (math.radians(55), 0.0, math.radians(35)) bpy.context.collection.objects.link(light_obj) bpy.context.scene.camera = cam_obj return cam_obj def render_angles(center, size): os.makedirs(RENDER_DIR, exist_ok=True) cam_obj = setup_camera_and_light(center) scene = bpy.context.scene try: scene.render.engine = 'BLENDER_EEVEE_NEXT' except TypeError: scene.render.engine = 'BLENDER_EEVEE' scene.render.resolution_x = RENDER_RESOLUTION[0] scene.render.resolution_y = RENDER_RESOLUTION[1] distance = size * 4.0 for name, direction in RENDER_ANGLES.items(): cam_obj.location = center + mathutils.Vector(direction).normalized() * distance scene.render.filepath = os.path.join(RENDER_DIR, f"{name}.png") bpy.ops.render.render(write_still=True) print(f"Rendered {scene.render.filepath}") def export_stl(obj, filename): bpy.ops.object.select_all(action='DESELECT') obj.select_set(True) bpy.context.view_layer.objects.active = obj path = os.path.join(EXPORT_DIR, filename) bpy.ops.wm.stl_export(filepath=path, export_selected_objects=True) print(f"Exported {path}") # ============================================================ # BOWL # ============================================================ def _smoothstep(t): return t * t * (3 - 2 * t) def _curved_wall_points(r_bottom, r_top, z_bottom, z_top, steps): """Sample points along a smoothstep-eased curve from (r_bottom, z_bottom) to (r_top, z_top) - an S-curve that starts and ends nearly vertical/horizontal, giving a rounded basin profile instead of a straight cone side.""" pts = [] for i in range(steps + 1): t = i / steps te = _smoothstep(t) r = r_bottom + (r_top - r_bottom) * te z = z_bottom + (z_top - z_bottom) * t pts.append((r, z)) return pts def _spin_profile(profile, name, steps=SPIN_STEPS): """Revolve a closed (r, z) profile loop 360 degrees around the Z axis into a solid/shell mesh object.""" bm = bmesh.new() verts = [bm.verts.new((r, 0.0, z)) for r, z in profile] edges = [bm.edges.new((verts[i], verts[i + 1])) for i in range(len(verts) - 1)] bmesh.ops.spin( bm, geom=verts + edges, axis=(0, 0, 1), cent=(0, 0, 0), steps=steps, angle=math.radians(360), use_merge=True, ) bmesh.ops.recalc_face_normals(bm, faces=bm.faces) bm.normal_update() mesh = bpy.data.meshes.new(name) bm.to_mesh(mesh) bm.free() obj = bpy.data.objects.new(name, mesh) bpy.context.collection.objects.link(obj) return obj def build_base_disc(): """Flat solid disc - the base plate the body sits on and the feet hang from. A plain filled cylinder, built via spin of a simple rectangular profile (center axis at bottom -> outer edge -> up -> back to center axis at top) so it comes out solid, not a shell.""" profile = [ (0.0, 0.0), (BASE_DISC_R, 0.0), (BASE_DISC_R, BASE_DISC_H), (0.0, BASE_DISC_H), ] return _spin_profile(profile, "base_disc") def build_body(): """Curved bowl-body shell: a thin tube wall (outer curve up, thin cap across the top, inner curve back down, thin cap across the bottom) - a closed ring cross-section revolved, so it comes out as a proper hollow tube not touching the axis. Bottom overlaps EMBED into the base disc; top is the shoulder where the rim ring sits - both ends have a short straight (constant-radius) collar so the overlap zone meets a plain cylinder, not the tangent end of the eased curve.""" z_bot = BASE_DISC_H - EMBED z_top = BASE_DISC_H + BODY_H z_curve_start = z_bot + BODY_STRAIGHT_H z_curve_end = z_top - BODY_STRAIGHT_H r_out_bot = BODY_R_BOTTOM r_out_top = BODY_R_SHOULDER r_in_bot = r_out_bot - WALL_T r_in_top = r_out_top - WALL_T outer = [(r_out_bot, z_bot), (r_out_bot, z_curve_start)] outer += _curved_wall_points(r_out_bot, r_out_top, z_curve_start, z_curve_end, BOWL_PROFILE_STEPS)[1:] outer += [(r_out_top, z_top)] inner = [(r_in_bot, z_bot), (r_in_bot, z_curve_start)] inner += _curved_wall_points(r_in_bot, r_in_top, z_curve_start, z_curve_end, BOWL_PROFILE_STEPS)[1:] inner += [(r_in_top, z_top)] profile = outer + list(reversed(inner)) profile.append(profile[0]) # close the loop back to the outer-bottom start return _spin_profile(profile, "body") def build_rim_ring(): """Flat ring plate (a washer): rectangular cross-section, flat top and bottom, revolved - sits capping the body's opening. Its bottom overlaps EMBED into the body's shoulder.""" z_bot = BASE_DISC_H + BODY_H - EMBED z_top = z_bot + EMBED + LIP_H profile = [ (LIP_R_IN, z_bot), (LIP_R_OUT, z_bot), (LIP_R_OUT, z_top), (LIP_R_IN, z_top), (LIP_R_IN, z_bot), ] return _spin_profile(profile, "rim_ring") def _add_foot_to_bmesh(bm, cx, cy): """Add one chunky tapered rectangular block (truncated pyramid) to an existing bmesh, centered at (cx, cy) - reads as a distinct carved-stone foot rather than a turned peg. Top face sits at z=EMBED (overlapping up into the base disc); it hangs down to the ground at z=EMBED-FOOT_H.""" top_z = EMBED bot_z = EMBED - FOOT_H ht, hb = FOOT_W_TOP / 2, FOOT_W_BOTTOM / 2 top_verts = [ bm.verts.new((cx - ht, cy - ht, top_z)), bm.verts.new((cx + ht, cy - ht, top_z)), bm.verts.new((cx + ht, cy + ht, top_z)), bm.verts.new((cx - ht, cy + ht, top_z)), ] bot_verts = [ bm.verts.new((cx - hb, cy - hb, bot_z)), bm.verts.new((cx + hb, cy - hb, bot_z)), bm.verts.new((cx + hb, cy + hb, bot_z)), bm.verts.new((cx - hb, cy + hb, bot_z)), ] bm.faces.new(top_verts) bm.faces.new(reversed(bot_verts)) for i in range(4): j = (i + 1) % 4 bm.faces.new((top_verts[i], top_verts[j], bot_verts[j], bot_verts[i])) def build_all_feet(): """All 4 feet combined into ONE mesh/object (built directly in one bmesh, not joined via separate boolean unions per foot) - so the brazier only needs a single feet-union boolean instead of 4 chained ones, which is what was corrupting one foot's geometry (see feedback_blender_boolean_fragility: long boolean chains are fragile).""" bm = bmesh.new() for i in range(FOOT_COUNT): angle = math.radians(FOOT_ANGLE_OFFSET_DEG + i * (360.0 / FOOT_COUNT)) x = FOOT_RADIAL_OFFSET * math.cos(angle) y = FOOT_RADIAL_OFFSET * math.sin(angle) _add_foot_to_bmesh(bm, x, y) bmesh.ops.recalc_face_normals(bm, faces=bm.faces) mesh = bpy.data.meshes.new("feet") bm.to_mesh(mesh) bm.free() obj = bpy.data.objects.new("feet", mesh) bpy.context.collection.objects.link(obj) return obj # ============================================================ # RIM GLYPH BAND (pixel-mask emboss, adapted from # runes/rune_panel_v1_plain.py for a small curved band instead of a flat # panel - see that file for the technique's full rationale) # ============================================================ def load_glyph_mask(glyph_name): path = os.path.join(GLYPH_DIR, f"rune_{glyph_name}_mark.png") img = bpy.data.images.load(path, check_existing=True) w, h = img.size px = img.pixels[:] bpy.data.images.remove(img) mask = [[px[(y * w + x) * 4 + 3] > RUNE_ALPHA_THRESHOLD for x in range(w)] for y in range(h)] for _ in range(RUNE_STROKE_DILATE): grown = [row[:] for row in mask] for y in range(h): for x in range(w): if mask[y][x]: continue nbrs = [(x - 1, y), (x + 1, y), (x, y - 1), (x, y + 1)] if any(0 <= nx < w and 0 <= ny < h and mask[ny][nx] for nx, ny in nbrs): grown[y][x] = True mask = grown mask, w, h = upscale_and_smooth_mask(mask, w, h, MASK_SUPERSAMPLE, MASK_BLUR_RADIUS) return mask, w, h def upscale_and_smooth_mask(mask, w, h, factor, radius): nw, nh = w * factor, h * factor grid = [[1.0 if mask[y // factor][x // factor] else 0.0 for x in range(nw)] for y in range(nh)] sat = [[0.0] * (nw + 1) for _ in range(nh + 1)] for y in range(nh): row_sum = 0.0 for x in range(nw): row_sum += grid[y][x] sat[y + 1][x + 1] = sat[y][x + 1] + row_sum def box_avg(x, y): x0, x1 = max(x - radius, 0), min(x + radius, nw - 1) y0, y1 = max(y - radius, 0), min(y + radius, nh - 1) total = sat[y1 + 1][x1 + 1] - sat[y0][x1 + 1] - sat[y1 + 1][x0] + sat[y0][x0] area = (x1 - x0 + 1) * (y1 - y0 + 1) return total / area smoothed = [[box_avg(x, y) > 0.5 for x in range(nw)] for y in range(nh)] return smoothed, nw, nh def build_glyph_stamp_mesh(glyph_name, depth, glyph_w, glyph_h): """Build one glyph's emboss bump, symmetric around local Y=0 (spans -depth/2..+depth/2), centered on its own local origin in X/Z - same construction as runes/rune_panel_v1_plain.py's version, parameterized by footprint size instead of the fixed RUNE_W/RUNE_H there.""" mask, w, h = load_glyph_mask(glyph_name) bm = bmesh.new() vert_grid = {} def get_vert(gx, gz): key = (gx, gz) if key not in vert_grid: lx = (gx / w - 0.5) * glyph_w lz = (gz / h - 0.5) * glyph_h vert_grid[key] = bm.verts.new((lx, -depth / 2, lz)) return vert_grid[key] faces = [] for y in range(h): for x in range(w): if not mask[y][x]: continue v0, v1, v2, v3 = get_vert(x, y), get_vert(x + 1, y), get_vert(x + 1, y + 1), get_vert(x, y + 1) faces.append(bm.faces.new((v0, v1, v2, v3))) for _ in range(MESH_SMOOTH_ITERATIONS): bmesh.ops.smooth_vert( bm, verts=list(vert_grid.values()), factor=MESH_SMOOTH_FACTOR, use_axis_x=True, use_axis_y=False, use_axis_z=True, ) if faces: extruded = bmesh.ops.extrude_face_region(bm, geom=faces) new_verts = [g for g in extruded['geom'] if isinstance(g, bmesh.types.BMVert)] bmesh.ops.translate(bm, verts=new_verts, vec=(0, depth, 0)) mesh = bpy.data.meshes.new(f"glyph_{glyph_name}") bmesh.ops.recalc_face_normals(bm, faces=bm.faces) bm.normal_update() bm.to_mesh(mesh) bm.free() obj = bpy.data.objects.new(mesh.name, mesh) bpy.context.collection.objects.link(obj) return obj def build_rim_glyph_band(): """One glyph cutter per GLYPH_POOL entry, engraved into the ring's flat TOP face around the annulus between LIP_R_IN and LIP_R_OUT (not embossed on the body wall). Each stamp's local axes are remapped via an explicit rotation matrix - local X (glyph width) -> tangential, local Z (glyph height) -> radially outward, local Y (depth) -> world -Z (so it cuts down into the top face) - rather than composing euler rotations, which only works for rotation about a single shared axis. All stamps are joined into ONE object before a single boolean DIFFERENCE against the base (same "combine before union" fix used for the feet).""" z_top = BASE_DISC_H + BODY_H + LIP_H # ring's flat top surface radius = (LIP_R_IN + LIP_R_OUT) / 2 depth = RIM_GLYPH_CUT_DEPTH + RIM_GLYPH_CUT_CLEARANCE # local Y=0 (the stamp's own mid-plane) should sit at world Z so the # cut extends CUT_CLEARANCE above the surface and CUT_DEPTH below it. z_center = z_top + (RIM_GLYPH_CUT_CLEARANCE - RIM_GLYPH_CUT_DEPTH) / 2 count = len(GLYPH_POOL) stamps = [] for i, glyph_name in enumerate(GLYPH_POOL): angle = math.radians(i * (360.0 / count)) tangent = mathutils.Vector((-math.sin(angle), math.cos(angle), 0.0)) outward = mathutils.Vector((math.cos(angle), math.sin(angle), 0.0)) down = mathutils.Vector((0.0, 0.0, -1.0)) stamp = build_glyph_stamp_mesh(glyph_name, depth, RIM_GLYPH_W, RIM_GLYPH_H) rot = mathutils.Matrix(( (tangent.x, down.x, outward.x), (tangent.y, down.y, outward.y), (tangent.z, down.z, outward.z), )).to_4x4() loc = mathutils.Vector((radius * math.cos(angle), radius * math.sin(angle), z_center)) stamp.matrix_world = mathutils.Matrix.Translation(loc) @ rot bpy.context.view_layer.objects.active = stamp bpy.ops.object.transform_apply(location=True, rotation=True, scale=False) stamps.append(stamp) bpy.ops.object.select_all(action='DESELECT') for s in stamps: s.select_set(True) bpy.context.view_layer.objects.active = stamps[0] bpy.ops.object.join() return stamps[0] def build_brazier(): base = build_base_disc() body = build_body() apply_boolean(base, body, 'UNION') rim = build_rim_ring() apply_boolean(base, rim, 'UNION') feet = build_all_feet() apply_boolean(base, feet, 'UNION') glyph_band = build_rim_glyph_band() apply_boolean(base, glyph_band, 'DIFFERENCE') base.name = "brazier" return base # ============================================================ # MAIN # ============================================================ def main(): os.makedirs(EXPORT_DIR, exist_ok=True) clear_scene() bowl = build_brazier() total_h = BASE_DISC_H + BODY_H + LIP_H print(f"Brazier built: disc H={BASE_DISC_H}mm + body H={BODY_H}mm + lip H={LIP_H}mm " f"= {total_h}mm above ground, plus {FOOT_H}mm feet, rim outer dia={LIP_R_OUT * 2}mm") if EXPORT_STL: export_stl(bowl, "brazier.stl") if RENDER_IMAGES: center, size = compute_scene_bounds() render_angles(center, size) print("Done.") if __name__ == "__main__": main()