zwitschi
ba68dcfdbc
Merged PR #28: v0.1.2 — scale calibration, façade detail, export preset Co-authored-by: Zwitschi <zwitschi82@gmail.com>
72 lines
2.4 KiB
Python
72 lines
2.4 KiB
Python
# Scale-test scene builder and FBX exporter for the Blender -> Unreal pipeline.
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#
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# Builds three 1 m cubes in the project geographic frame (EPSG:26911, origin
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# Hollywood x Highland, X east / Y north / Z up):
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# ScaleTest_A centred at (0, 0, 0.5) - origin + 1 m size reference
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# ScaleTest_B centred at (10, 0, 0.5) - +10 m east probe
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# ScaleTest_C centred at (0, 10, 0.5) - +10 m north probe
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# and exports them as one FBX with the named export preset "ue_metric_v1".
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#
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# Run headless (see Art/blender/README.md for the Flatpak invocation):
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# blender -b --factory-startup --python Tools/scale_test_export.py -- \
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# --out /tmp/gigline/scaletest.fbx --save-blend Art/blender/scaletest/scale-test-<date>.blend
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import argparse
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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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def build_scene():
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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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mat = bpy.data.materials.new("M_ScaleTest_Red")
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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 = (0.8, 0.05, 0.05, 1.0)
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specs = {
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"ScaleTest_A": (0.0, 0.0, 0.5),
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"ScaleTest_B": (10.0, 0.0, 0.5),
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"ScaleTest_C": (0.0, 10.0, 0.5),
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}
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for name, loc in specs.items():
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bpy.ops.mesh.primitive_cube_add(size=1.0, location=loc)
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obj = bpy.context.active_object
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obj.name = name
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obj.data.materials.append(mat)
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print(f"[scale_test] created {name} at {loc}")
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def export_fbx(path):
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os.makedirs(os.path.dirname(path), exist_ok=True)
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# Named export preset "ue_metric_v1" - change only via a new preset name.
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fbx_preset.export_static(path)
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print(f"[scale_test] exported FBX preset ue_metric_v1 -> {path}")
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def main():
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argv = sys.argv[sys.argv.index("--") + 1:] if "--" in sys.argv else []
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parser = argparse.ArgumentParser()
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parser.add_argument("--out", default="/tmp/gigline/scaletest.fbx")
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parser.add_argument("--save-blend", default=None)
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args = parser.parse_args(argv)
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build_scene()
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if args.save_blend:
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os.makedirs(os.path.dirname(args.save_blend), exist_ok=True)
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bpy.ops.wm.save_as_mainfile(filepath=args.save_blend)
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print(f"[scale_test] saved {args.save_blend}")
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export_fbx(args.out)
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main()
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