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60 lines
1.7 KiB
Python
60 lines
1.7 KiB
Python
1 year ago
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import bpy
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import bmesh
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import os
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import struct
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from mathutils import *; from math import *
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from bpy_extras.io_utils import (axis_conversion)
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C = bpy.context
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D = bpy.data
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EXPORT_DIRECTORY = "exported"
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if not os.path.exists(bpy.path.abspath(f"//{EXPORT_DIRECTORY}")):
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os.makedirs(bpy.path.abspath(f"//{EXPORT_DIRECTORY}"))
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def write_f32(f, number: float):
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f.write(bytes(struct.pack("f", number)))
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def write_u64(f, number: int):
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f.write(bytes(struct.pack("Q", number)))
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for o in D.objects:
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mapping = axis_conversion(
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from_forward = "Y",
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from_up = "Z",
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to_forward = "-Z",
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to_up = "Y",
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)
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mapping.resize_4x4()
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print(mapping)
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output_filepath = bpy.path.abspath(f"//{EXPORT_DIRECTORY}/{o.name}.bin")
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print(f"\n\nExporting {output_filepath}")
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with open(output_filepath, "wb") as f:
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bm = bmesh.new()
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mesh = o.to_mesh()
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bm.from_mesh(mesh)
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bmesh.ops.triangulate(bm, faces=bm.faces)
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bm.transform(mapping)
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bm.to_mesh(mesh)
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vertices = []
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for polygon in mesh.polygons:
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if len(polygon.loop_indices) == 3:
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for loopIndex in polygon.loop_indices:
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loop = mesh.loops[loopIndex]
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position = mesh.vertices[loop.vertex_index].undeformed_co
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uv = mesh.uv_layers.active.data[loop.index].uv
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normal = loop.normal
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vertices.append(position)
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write_u64(f, len(vertices))
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for v in vertices:
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write_f32(f, v.x)
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write_f32(f, v.y)
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write_f32(f, v.z)
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print(f"Wrote {len(vertices)} vertices")
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