zwitschi
73aca9db80
Merged PR #32: 0.1.5 — hero detail, scene audit, material orphaning fixed Co-authored-by: Zwitschi <zwitschi82@gmail.com>
419 lines
21 KiB
Python
419 lines
21 KiB
Python
"""Parametric hero façade: 6840 Hollywood Blvd / El Capitan Entertainment Centre.
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Builds the north elevation in the project frame (X east, Y north, Z up, metres,
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origin Hollywood x Highland) and exports it with the named FBX preset
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`ue_metric_v1`, so it imports into Unreal at 1 m = 100 uu.
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blender -b --factory-startup --python Tools/hero_facade_build.py -- \
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--out /tmp/gigline/hero-facade.fbx \
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--save-blend Art/blender/hero/hero-facade-2026-11-07.blend \
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--report Art/blender/hero/hero-facade-2026-11-07.json
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Every dimension traces to a recorded measurement or a named assumption; the
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report writes both, so a later pass can see what was evidence and what was
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invented:
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width 25.75 m measured, OSM way 424024147 north edge
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height 14.50 m tag `height` on the same way
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6 columns, 4.96 m sibling venue notes, cross-checked against the 25.75 m
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frontage (5 bays + one column = 25.70 m)
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three portals photographs: three separate openings, each with its own
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short flight, not one 12 m grand stair
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everything else assumption, listed in the report
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Quieter choices are deliberate: a blockout for the demo, not a scanned facade.
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Detail that the photographs do not resolve (moulding profiles, window rhythm)
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is left abstract rather than invented in fine detail.
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"""
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import argparse
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import json
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import math
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import os
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import sys
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import bpy
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sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
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import fbx_export_preset as fbx_preset # noqa: E402
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# --- measured / derived ------------------------------------------------------
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FRONTAGE_W = 25.75
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BODY_D = 12.0 # street-side mass only; the building runs 54.9 m deep
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HEIGHT = 14.5
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COLUMN_COUNT = 6
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COLUMN_BAY = 4.96
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FRONTAGE_Y = 0.0 # front plane sits at the building line of the block frame
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# --- assumptions -------------------------------------------------------------
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# Calibrated against the 2009 façade photograph: the entablature starts a little
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# over half the total height, and the parapet carries the motto at about three
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# quarters. The first pass had the enframed wall carrying 5.7 m of blank stone
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# above the capitals, which read as a warehouse rather than a temple.
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PEDESTAL_H = 1.45 # column pedestal top; entrance platform sits on it
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COLUMN_D = 0.95 # Ionic shaft diameter at the base
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CAPITAL_H = 0.95
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ENTABLATURE_H = 3.00 # band between the capitals and the motto panel
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# 3.40 -> 3.00 on 2026-11-09: the photographs put the
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# colonnade at 50-60 % of the 14.5 m elevation, and our
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# 3.40/2.20 entablature+parapet left it at 47.6 %. Thinning
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# both lifts the colonnade to 7.70 m = 53.1 %, inside the band.
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PARAPET_H = 1.80 # motto panel and cornice above the entablature (see above)
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PORTAL_W = 3.10 # each of the three door openings
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PORTAL_H = 3.40
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STEP_TREAD = 0.34
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STEP_RISE = 0.15
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STEP_WIDTH = 3.60
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def cube(name, x, y, z, dx, dy, dz, material=None):
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bpy.ops.mesh.primitive_cube_add(size=1.0, location=(x, y, z))
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obj = bpy.context.active_object
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obj.name = name
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obj.scale = (dx, dy, dz)
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bpy.ops.object.transform_apply(location=False, rotation=False, scale=True)
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if material:
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obj.data.materials.append(material)
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return obj
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def cylinder(name, x, y, z0, z1, radius, material, vertices=24, smooth=True):
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bpy.ops.mesh.primitive_cylinder_add(
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vertices=vertices,
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radius=radius,
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depth=(z1 - z0),
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location=(x, y, (z0 + z1) / 2.0),
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)
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obj = bpy.context.active_object
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obj.name = name
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if material:
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obj.data.materials.append(material)
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if smooth:
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# Round parts must shade smoothly *around* the axis while keeping the
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# caps creased. Without this the columns read as faceted prisms, and the
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# FBX carries no smoothing groups at all (Unreal warns about it).
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bpy.ops.object.shade_smooth_by_angle(angle=math.radians(35.0))
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return obj
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def disc_on_wall(name, x, y, z, radius, thickness, material=None, vertices=24):
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"""A round disc mounted vertically on a wall face.
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`cylinder()` builds along Z, so a "medallion" made with it is a pancake lying
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flat on top of the parapet rather than a disc on its face — which is what the
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first build did (1.1 m across in Y, 0.02 m thick in Z, sitting at the coping).
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This rotates the cylinder 90 degrees about X so the axis points along Y and
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the disc faces the street.
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"""
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obj = cylinder(name, x, y, z - thickness / 2.0, z + thickness / 2.0,
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radius, material, vertices=vertices)
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obj.rotation_euler = (math.radians(90.0), 0.0, 0.0)
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bpy.ops.object.select_all(action="DESELECT")
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obj.select_set(True)
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bpy.context.view_layer.objects.active = obj
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bpy.ops.object.transform_apply(location=False, rotation=True, scale=True)
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return obj
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def make_material(name, rgba, roughness=0.75):
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mat = bpy.data.materials.new(name)
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mat.use_nodes = True
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bsdf = mat.node_tree.nodes.get("Principled BSDF")
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bsdf.inputs["Base Color"].default_value = rgba
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bsdf.inputs["Roughness"].default_value = roughness
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return mat
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def build():
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scene = bpy.context.scene
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for obj in list(bpy.data.objects):
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bpy.data.objects.remove(obj, do_unlink=True)
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stone = make_material("M_Facade_Stone", (0.78, 0.74, 0.66, 1.0), 0.85)
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stone_dark = make_material("M_Facade_StoneShadow", (0.62, 0.59, 0.53, 1.0), 0.85)
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glass = make_material("M_Facade_GlassDark", (0.05, 0.06, 0.07, 1.0), 0.25)
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banner = make_material("M_Facade_Banner", (0.66, 0.06, 0.05, 1.0), 0.9)
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half_w = FRONTAGE_W / 2.0
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lines = []
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parts = []
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def note(name, dims, evidence):
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parts.append({"object": name, "dims_m": [round(d, 3) for d in dims], "evidence": evidence})
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lines.append(f"[hero] {name:22} {dims[0]:6.2f} x {dims[1]:6.2f} x {dims[2]:6.2f} m ({evidence})")
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# --- main mass ---------------------------------------------------------
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# The mass sits behind the colonnade; its front face is the colonnade line.
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# Inset so the entablature (1.5 m deep) and parapet (1.2 m deep) sit inside the
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# measured 25.75 m frontage instead of overhanging it.
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inset = 0.75
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cube("Hero_Mass", 0.0, -BODY_D / 2.0 - 0.5, HEIGHT / 2.0, FRONTAGE_W - 2 * inset, BODY_D, HEIGHT, stone_dark)
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note("Hero_Mass", (FRONTAGE_W - 2 * inset, BODY_D, HEIGHT),
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"measured frontage x assumption depth x measured height, inset behind the cornice")
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# --- stylobate and steps ----------------------------------------------
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# A plinth from the pavement to the pedestal shelf, with three door flights.
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# The stylobate is built later as piers around the three door openings.
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# --- Ionic colonnade ---------------------------------------------------
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col_xs = []
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span = (COLUMN_COUNT - 1) * COLUMN_BAY
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for i in range(COLUMN_COUNT):
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x = -span / 2.0 + i * COLUMN_BAY
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col_xs.append(x)
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cube(f"Hero_Pedestal_{i + 1}", x, -0.62, PEDESTAL_H + 0.27,
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1.24, 1.24, 0.54, stone)
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# Base moulding: a taller, wider cylinder where the shaft meets the
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# pedestal. Without it the shaft starts straight off a square plinth,
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# which is not how an Ionic base reads in silhouette.
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base_z0 = PEDESTAL_H + 0.55
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base_h = 0.22
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cylinder(f"Hero_ColumnBase_{i + 1}", x, -0.55, base_z0, base_z0 + base_h,
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0.68, stone, vertices=20)
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shaft_z0 = base_z0 + base_h
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cap_z0 = HEIGHT - ENTABLATURE_H - PARAPET_H - CAPITAL_H
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cylinder(f"Hero_Column_{i + 1}", x, -0.55, shaft_z0, cap_z0,
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COLUMN_D / 2.0, stone)
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# Fluting: 20 shallow grooves around the shaft, as the photographs show on
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# the colonnade. Each flute is a thin cylinder set into the shaft surface;
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# modelling them as grooves would need booleans on 6 columns for detail the
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# eye reads only in silhouette and grazing light, so they are added mass in
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# the *shadow* direction instead — cheap, and it breaks the flat highlight.
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flutes = 20
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flute_r = 0.032
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for f in range(flutes):
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ang = (2.0 * math.pi * f) / flutes
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fx = x + (COLUMN_D / 2.0 - flute_r * 0.4) * math.cos(ang)
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fy = -0.55 + (COLUMN_D / 2.0 - flute_r * 0.4) * math.sin(ang)
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cylinder(f"Hero_Flute_{i + 1}_{f + 1}", fx, fy, shaft_z0 + 0.05,
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cap_z0 - 0.05, flute_r, stone_dark, vertices=6)
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# Capital block, then the square abacus that carries the architrave.
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# The abacus takes the top 0.14 m of the capital zone so the colonnade
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# still ends at HEIGHT - ENTABLATURE_H - PARAPET_H (proportion unchanged).
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abacus_h = 0.14
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cylinder(f"Hero_Capital_{i + 1}", x, -0.55, cap_z0,
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HEIGHT - ENTABLATURE_H - PARAPET_H - abacus_h, 0.62, stone, vertices=16)
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cube(f"Hero_Abacus_{i + 1}", x, -0.55,
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HEIGHT - ENTABLATURE_H - PARAPET_H - abacus_h / 2.0,
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1.30, 1.30, abacus_h, stone)
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note("Hero_Column_x6", (COLUMN_D, COLUMN_D, HEIGHT - ENTABLATURE_H - PARAPET_H - PEDESTAL_H),
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f"6 columns at {COLUMN_BAY} m centres (sibling notes x measured frontage)")
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note("Hero_Flute_x120", (0.064, 0.064, cap_z0 - shaft_z0),
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"photographs: fluted shafts; 20 grooves per column modelled as shallow "
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"cylinders in the shadow tone rather than boolean cut grooves")
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note("Hero_ColumnBase_x6", (1.36, 1.36, 0.22),
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"assumption: Ionic base moulding; photographs show a wider base at the shaft foot")
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note("Hero_Abacus_x6", (1.30, 1.30, 0.14),
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"assumption: square abacus under the architrave, as Ionic capitals carry")
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# --- entablature and parapet ------------------------------------------
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ent_z0 = HEIGHT - ENTABLATURE_H - PARAPET_H
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# Lower entablature band (architrave) standing proud of the wall, so the
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# elevation reads as layered stone rather than one flat plane.
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cube("Hero_Architrave", 0.0, -1.55, ent_z0 + 0.42, FRONTAGE_W, 1.65, 0.84, stone)
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note("Hero_Architrave", (FRONTAGE_W, 1.65, 0.84), "assumption: stacked entablature bands")
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# Cornice under the parapet: a projecting corona carried on a dentil course,
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# so the top of the order reads as layered stone with a shadow line rather
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# than one flat box. Dentils hang under the corona and stand 0.25 m clear of
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# it, which is what gives the elevation its cornice shadow at street level.
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cornice_z = HEIGHT - PARAPET_H - 0.18
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cube("Hero_Cornice", 0.0, -1.6, cornice_z, FRONTAGE_W, 1.75, 0.36, stone)
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note("Hero_Cornice", (FRONTAGE_W, 1.75, 0.36), "assumption: projecting cornice line")
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DENTIL_W, DENTIL_D, DENTIL_H, DENTIL_GAP = 0.18, 0.30, 0.22, 0.27
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dentil_y = -2.30
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dentil_z = cornice_z - 0.18 - DENTIL_H / 2.0
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dentil_span = FRONTAGE_W - 2.0
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dentil_count = int(dentil_span / (DENTIL_W + DENTIL_GAP))
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for i in range(dentil_count):
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dx = -dentil_span / 2.0 + (DENTIL_W + DENTIL_GAP) * i + DENTIL_W / 2.0
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cube(f"Hero_Dentil_{i + 1}", dx, dentil_y, dentil_z,
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DENTIL_W, DENTIL_D, DENTIL_H, stone)
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note("Hero_Dentil_xN", (DENTIL_W, DENTIL_D, DENTIL_H),
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f"{dentil_count} dentils at {DENTIL_W + DENTIL_GAP:.2f} m centres under the corona; "
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"assumption: photographed cornice reads as a dentilled course")
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cube("Hero_Entablature", 0.0, -0.75, ent_z0 + ENTABLATURE_H / 2.0,
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FRONTAGE_W, 1.5, ENTABLATURE_H, stone)
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note("Hero_Entablature", (FRONTAGE_W, 1.5, ENTABLATURE_H), "assumption: entablature depth")
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cube("Hero_Parapet", 0.0, -0.75, HEIGHT - PARAPET_H / 2.0,
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FRONTAGE_W, 1.2, PARAPET_H, stone)
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note("Hero_Parapet", (FRONTAGE_W, 1.2, PARAPET_H), "assumption: parapet carries the motto band")
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# Motto band: a recessed panel across the parapet with a moulded surround, as
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# the photographs show. The panel was a 8 cm stripe of dark stone; it is now a
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# real recess — surround frame standing 6 cm proud, panel set 12 cm behind it —
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# so it reads as an inscription panel from the street instead of a paint line.
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motto_z = HEIGHT - PARAPET_H / 2.0
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motto_w = FRONTAGE_W - 3.0
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for x_off in (-(motto_w / 2.0 + 0.16), (motto_w / 2.0 + 0.16)):
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cube(f"Hero_MottoSurround_v{int(x_off > 0)}", x_off, -1.13, motto_z,
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0.32, 0.26, 1.15, stone)
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for z_off in (-0.575, 0.575):
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cube(f"Hero_MottoSurround_h{int(z_off > 0)}", 0.0, -1.13, motto_z + z_off,
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motto_w + 0.64, 0.26, 0.32, stone)
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cube("Hero_MottoBand", 0.0, -1.06, motto_z, motto_w, 0.10, 0.85, stone_dark)
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note("Hero_MottoBand", (motto_w, 0.10, 0.85),
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"photographs: motto panel above the colonnade, now an inset panel with a "
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"moulded surround rather than a flat stripe")
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# Medallions either side of the inscription: discs on the parapet face, not
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# pancakes on the coping (see disc_on_wall).
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for i, x in enumerate((-6.2, 6.2), start=1):
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disc_on_wall(f"Hero_Medallion_{i}", x, -1.30, HEIGHT - PARAPET_H / 2.0,
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0.55, 0.04, stone_dark, vertices=20)
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note("Hero_Medallion_x2", (1.1, 0.04, 1.1),
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"photographs: two stone discs beside the motto, mounted on the parapet face")
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# --- entrances ---------------------------------------------------------
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# Three portals between column pairs, each with its own short flight. The
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# doorway is cut INTO the stylobate face rather than laid on it: the plinth is
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# modelled as three segments so the opening is a real recess, and the portals
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# stand proud of the wall behind the colonnade so they read from the street.
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portal_xs = (-COLUMN_BAY, 0.0, COLUMN_BAY)
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plinth_front = -2.4 # front face of the plinth, in the facade frame
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plinth_back = 0.0
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gap = PORTAL_W
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# The plinth is four piers between and beside the openings, plus a band over
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# them, so each door is a real recess instead of a panel on a solid face.
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piers = [
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(-(FRONTAGE_W / 2.0), portal_xs[0] - gap / 2.0),
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(portal_xs[0] + gap / 2.0, portal_xs[1] - gap / 2.0),
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(portal_xs[1] + gap / 2.0, portal_xs[2] - gap / 2.0),
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(portal_xs[2] + gap / 2.0, (FRONTAGE_W / 2.0)),
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]
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for pi, (x0, x1) in enumerate(piers, start=1):
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cube(f"Hero_Stylobate_{pi}", (x0 + x1) / 2.0, -1.2, PEDESTAL_H / 2.0,
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x1 - x0, 2.4, PEDESTAL_H, stone)
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# Band above the openings, closing the plinth to full height between the doors.
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cube("Hero_Stylobate_LintelBand", 0.0, -1.2, PORTAL_H + (PEDESTAL_H - PORTAL_H) / 2.0,
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(portal_xs[-1] + gap / 2.0) - (portal_xs[0] - gap / 2.0), 2.4,
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PEDESTAL_H - PORTAL_H, stone)
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note("Hero_Stylobate", (FRONTAGE_W, 2.4, PEDESTAL_H),
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"assumption: pedestal height; four piers and a lintel band leave three recesses")
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for i, x in enumerate(portal_xs, start=1):
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# Recessed doorway: a dark reveal set back inside the plinth, 1.2 m deep so
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# it reads as an opening from any angle.
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depth = 1.2
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cube(f"Hero_Portal_{i}", x, plinth_front + depth / 2.0 + 0.05, PORTAL_H / 2.0,
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PORTAL_W, depth, PORTAL_H, glass)
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# Stone surround, standing 0.1 m proud of the plinth face.
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for side, sx in (("L", -1.0), ("R", 1.0)):
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# Jambs stop at the pavement: a 0.15 m overhang below Z 0 would sink the
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# whole facade into the ground plane.
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cube(f"Hero_PortalJamb_{i}{side}", x + sx * (PORTAL_W / 2.0 + 0.15),
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plinth_front - 0.10, (PORTAL_H + 0.3) / 2.0, 0.3, 0.2, PORTAL_H + 0.3, stone)
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cube(f"Hero_PortalLintel_{i}", x, plinth_front - 0.10, PORTAL_H + 0.15,
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PORTAL_W + 0.6, 0.2, 0.3, stone)
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# Door grille: mullions across the opening, dark metal read at distance.
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for m in range(1, 4):
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cube(f"Hero_PortalMullion_{i}_{m}", x - PORTAL_W / 2.0 + m * PORTAL_W / 4.0,
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plinth_front + 0.12, PORTAL_H / 2.0, 0.09, 0.06, PORTAL_H, stone_dark)
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# Sign panel over the doorway, as the photographs show.
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cube(f"Hero_PortalSign_{i}", x, plinth_front - 0.16, PORTAL_H + 0.75,
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0.7, 0.06, 0.9, banner)
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# Photographs show four to five risers per portal; the count follows the
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# pedestal height rather than inheriting the old "eight steps" claim.
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steps = max(3, min(5, int(round((PEDESTAL_H - 0.2) / STEP_RISE))))
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# Steps descend from the plinth to the pavement; the lowest tread must land
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# exactly on Z 0, never below it, so the flight meets the ground plane.
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steps = max(3, min(steps, int(round(PEDESTAL_H / STEP_RISE))))
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for st in range(steps):
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top = PEDESTAL_H - st * STEP_RISE
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height = top if st == steps - 1 else STEP_RISE
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cube(f"Hero_Step_{i}_{st + 1}", x,
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plinth_front - 0.14 - st * STEP_TREAD - STEP_TREAD / 2.0 + 0.28,
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top - height / 2.0, STEP_WIDTH, STEP_TREAD, height, stone)
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note(f"Hero_PortalFlight_{i}", (PORTAL_W, STEP_TREAD * steps, PEDESTAL_H - 0.2),
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f"{steps} steps at {STEP_RISE:.2f} m rise / {STEP_TREAD:.2f} m tread "
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f"(assumption; photos show 4-5, the old notes said 8)")
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# --- banners -----------------------------------------------------------
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# Three vertical event banners hung from the column line, as the recordings show.
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for i, x in enumerate(portal_xs, start=1):
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cube(f"Hero_Banner_{i}", x, -1.05, 7.9, 1.55, 0.06, 5.4, banner)
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note("Hero_Banner_x3", (1.55, 0.06, 5.4), "photographs: JIMMY KIMMEL LIVE banners on the column line")
|
|
|
|
# --- windows -----------------------------------------------------------
|
|
# Two ranks of windows between the columns and behind the colonnade.
|
|
# Y must sit on the wall plane: the mass front face is at Y -0.50 and the
|
|
# columns stand proud to -1.02. These were at -1.98, i.e. 1.44 m in FRONT of
|
|
# the wall and ahead of the column line, so the glazing floated in the
|
|
# colonnade instead of reading as openings behind it (visible in the
|
|
# review-hero-facade-* shots). WINDOW_Y puts the pane 6 cm proud of the wall,
|
|
# safely behind the columns.
|
|
WINDOW_Y = -0.56
|
|
for rank, z in enumerate((4.4, 8.2), start=1):
|
|
for i, x in enumerate(col_xs[:-1], start=1):
|
|
wx = x + COLUMN_BAY / 2.0
|
|
cube(f"Hero_Window_{rank}_{i}", wx, WINDOW_Y, z, 2.0, 0.08, 1.9, glass)
|
|
note("Hero_Window_x10", (2.0, 0.08, 1.9), "photographs: window bands behind the colonnade")
|
|
|
|
return parts, lines
|
|
|
|
|
|
def export_fbx(path):
|
|
# Preset lives in Tools/fbx_export_preset.py (ue_metric_v1).
|
|
os.makedirs(os.path.dirname(path), exist_ok=True)
|
|
# Named export preset "ue_metric_v1" - same settings as Tools/scale_test_export.py.
|
|
fbx_preset.export_static(path)
|
|
print(f"[hero] exported FBX preset ue_metric_v1 -> {path}")
|
|
|
|
|
|
def main():
|
|
argv = sys.argv[sys.argv.index("--") + 1:] if "--" in sys.argv else []
|
|
parser = argparse.ArgumentParser()
|
|
parser.add_argument("--out", default="/tmp/gigline/hero-facade.fbx")
|
|
parser.add_argument("--save-blend", default=None)
|
|
parser.add_argument("--report", default=None)
|
|
args = parser.parse_args(argv)
|
|
|
|
parts, lines = build()
|
|
for line in lines:
|
|
print(line)
|
|
|
|
# Bounds check: the facade must be exactly the measured frontage and height.
|
|
import mathutils
|
|
|
|
mn = mathutils.Vector((1e9, 1e9, 1e9))
|
|
mx = mathutils.Vector((-1e9, -1e9, -1e9))
|
|
for obj in bpy.context.scene.objects:
|
|
if obj.type != "MESH":
|
|
continue
|
|
for corner in obj.bound_box:
|
|
world = obj.matrix_world @ mathutils.Vector(corner)
|
|
mn = mathutils.Vector((min(mn[i], world[i]) for i in range(3)))
|
|
mx = mathutils.Vector((max(mx[i], world[i]) for i in range(3)))
|
|
size = mx - mn
|
|
print(f"[hero] bounds: {size.x:.2f} x {size.y:.2f} x {size.z:.2f} m "
|
|
f"(x {mn.x:.2f}..{mx.x:.2f}, y {mn.y:.2f}..{mx.y:.2f}, z {mn.z:.2f}..{mx.z:.2f})")
|
|
if abs(size.z - HEIGHT) > 0.05:
|
|
print(f"[hero] WARNING: height {size.z:.2f} m does not match the {HEIGHT} m tag")
|
|
|
|
if args.save_blend:
|
|
os.makedirs(os.path.dirname(args.save_blend), exist_ok=True)
|
|
bpy.ops.wm.save_as_mainfile(filepath=args.save_blend)
|
|
print(f"[hero] saved {args.save_blend}")
|
|
|
|
if args.report:
|
|
os.makedirs(os.path.dirname(args.report), exist_ok=True)
|
|
with open(args.report, "w") as handle:
|
|
json.dump(
|
|
{
|
|
"asset": "hero-facade",
|
|
"frame": "project frame, metres, X east Y north Z up",
|
|
"bounds_m": {"min": [round(v, 3) for v in mn], "max": [round(v, 3) for v in mx],
|
|
"size": [round(v, 3) for v in size]},
|
|
"parts": parts,
|
|
},
|
|
handle,
|
|
indent=2,
|
|
)
|
|
print(f"[hero] wrote {args.report}")
|
|
|
|
export_fbx(args.out)
|
|
|
|
|
|
main()
|