71 lines
2.6 KiB
Python
71 lines
2.6 KiB
Python
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# Stage 38 (read-only): clay render, to settle whether the remaining speckle is GEOMETRY or PAINT.
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#
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# blender --background --python 38_clay.py -- <blend> <out_dir>
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#
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# The lane README's own advice: a clay render drops the material, and it is the only reliable way
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# to tell a mesh defect from a painted one. Several dead ends here came from mistaking painted
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# shadow for a dent and vice versa. Same cameras as 09_beauty so the frames line up.
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import bpy, sys, math, os
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from mathutils import Vector, Euler
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argv = sys.argv[sys.argv.index("--") + 1:]
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BLEND, OUT = argv[0], os.path.abspath(argv[1])
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os.makedirs(OUT, exist_ok=True)
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bpy.ops.wm.open_mainfile(filepath=BLEND)
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for o in list(bpy.data.objects):
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if o.type in ('LIGHT', 'CAMERA'):
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bpy.data.objects.remove(o, do_unlink=True)
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ob = max([o for o in bpy.data.objects if o.type == 'MESH'], key=lambda o: len(o.data.vertices))
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clay = bpy.data.materials.new("clay")
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clay.use_nodes = True
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bsdf = clay.node_tree.nodes["Principled BSDF"]
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bsdf.inputs["Base Color"].default_value = (0.62, 0.62, 0.62, 1)
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bsdf.inputs["Roughness"].default_value = 0.55
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if "Metallic" in bsdf.inputs:
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bsdf.inputs["Metallic"].default_value = 0.0
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clay.use_backface_culling = False
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ob.data.materials.clear()
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ob.data.materials.append(clay)
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sc = bpy.context.scene
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sc.render.engine = 'BLENDER_EEVEE'
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sc.render.resolution_x = sc.render.resolution_y = 1200
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wd = bpy.data.worlds.new("w")
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wd.use_nodes = True
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wd.node_tree.nodes["Background"].inputs[0].default_value = (0.20, 0.20, 0.22, 1)
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sc.world = wd
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def sun(rot, e):
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ld = bpy.data.lights.new("s", 'SUN')
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ld.energy = e
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ld.use_shadow = False
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lo = bpy.data.objects.new("s", ld)
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lo.rotation_euler = rot
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bpy.context.collection.objects.link(lo)
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sun(Euler((math.radians(55), 0, math.radians(-35))), 2.6)
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sun(Euler((math.radians(120), 0, math.radians(150))), 1.1)
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sun(Euler((math.radians(85), 0, math.radians(35))), 0.9)
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cam = bpy.data.cameras.new("c")
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cam.lens = 70
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cob = bpy.data.objects.new("c", cam)
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bpy.context.collection.objects.link(cob)
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sc.camera = cob
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for name, loc, rot in [
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("full_front", Vector((0.0, -2.05, 0.50)), Euler((math.radians(90), 0, 0))),
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("chest", Vector((0.0, -0.85, 0.70)), Euler((math.radians(90), 0, 0))),
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("hip", Vector((0.0, -0.85, 0.46)), Euler((math.radians(90), 0, 0))),
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("thigh", Vector((0.0, -0.70, 0.33)), Euler((math.radians(90), 0, 0))),
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]:
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cob.location = loc
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cob.rotation_euler = rot
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sc.render.filepath = os.path.join(OUT, f"{name}.png")
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bpy.ops.render.render(write_still=True)
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print(f"clay {name}", flush=True)
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print("CLAY_DONE")
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