分布式处理和脚底板文件
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from math import radians
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import sys, platform, os, time, bpy, requests, json, bmesh, shutil
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from PIL import Image
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import platform
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if platform.system() == 'Windows':
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sys.path.append('e:\\libs\\')
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else:
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sys.path.append('/data/deploy/make3d/make2/libs/')
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import config, libs
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def bmesh_copy_from_object(obj, transform=True, triangulate=True, apply_modifiers=False):
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"""Returns a transformed, triangulated copy of the mesh"""
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assert obj.type == 'MESH'
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if apply_modifiers and obj.modifiers:
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import bpy
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depsgraph = bpy.context.evaluated_depsgraph_get()
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obj_eval = obj.evaluated_get(depsgraph)
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me = obj_eval.to_mesh()
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bm = bmesh.new()
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bm.from_mesh(me)
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obj_eval.to_mesh_clear()
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else:
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me = obj.data
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if obj.mode == 'EDIT':
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bm_orig = bmesh.from_edit_mesh(me)
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bm = bm_orig.copy()
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else:
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bm = bmesh.new()
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bm.from_mesh(me)
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if transform:
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matrix = obj.matrix_world.copy()
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if not matrix.is_identity:
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bm.transform(matrix)
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matrix.translation.zero()
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if not matrix.is_identity:
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bm.normal_update()
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if triangulate:
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bmesh.ops.triangulate(bm, faces=bm.faces)
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return bm
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def fix_link_texture(pid):
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# 修改obj中的mtl文件为pid_original.mtl
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path = os.path.join(workdir, 'print', f'{pid}_{orderId}')
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filename = os.path.join(path, f'{pid}_original.obj')
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with open(filename, 'r') as f:
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lines = f.readlines()
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for i in range(len(lines)):
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if lines[i].startswith('mtllib'):
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lines[i] = f'mtllib {pid}_original.mtl\n'
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break
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with open(filename, 'w') as f:
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f.writelines(lines)
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f.close()
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# 将pid.mtl文件复制为pid_original.mtl _decimate
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shutil.copy(os.path.join(path, f'{pid}.mtl'), os.path.join(path, f'{pid}_original.mtl'))
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shutil.copy(os.path.join(path, f'{pid}Tex1.jpg'), os.path.join(path, f'{pid}Tex1_decimate.jpg'))
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texture_file = os.path.join(path, f'{pid}Tex1_decimate.jpg')
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if os.path.exists(texture_file):
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img = Image.open(texture_file)
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img = img.resize((int(img.size[0] * 0.5), int(img.size[1] * 0.5)))
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img.save(texture_file, quality=90, optimize=True)
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print('resize texture file to 50% success')
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# 修改pid_original.mtl文件中的贴图为pid_old.jpg
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with open(os.path.join(path, f'{pid}_original.mtl'), 'r') as f:
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lines = f.readlines()
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for i in range(len(lines)):
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if lines[i].startswith('map_Kd'):
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lines[i] = f'map_Kd {pid}Tex1_decimate.jpg\n'
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break
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with open(os.path.join(path, f'{pid}_original.mtl'), 'w') as f:
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f.writelines(lines)
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f.close()
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def main():
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start = time.time()
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get_printsize_url = 'https://mp.api.suwa3d.com/api/printOrder/info'
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upload_obj_volume_url = 'https://mp.api.suwa3d.com/api/physical/add' # ?pid=1&order_id=1&faces=1&volume=1
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res = requests.get(f'{get_printsize_url}?id={orderId}')
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print('获取打印尺寸:', res.text)
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if res.status_code == 200:
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pid = res.json()['data']['pid']
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path = os.path.join(workdir, 'print', f'{pid}_{orderId}')
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filename = os.path.join(path, f'{pid}.obj')
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bpy.ops.object.delete(use_global=False, confirm=False)
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print('正在处理:', filename)
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bpy.ops.import_scene.obj(filepath=filename)
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obj = bpy.context.selected_objects[0]
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print('原始模型尺寸:', obj.dimensions)
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bpy.ops.object.transform_apply(location=True, rotation=True, scale=True)
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print('应用后模型尺寸:', obj.dimensions)
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shutil.copy(filename, os.path.join(path, f'{pid}_original.obj'))
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filename_original = os.path.join(path, f'{pid}_original.obj')
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for f in res.json()['data']['fileList']:
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height = float(f.split('_')[-2][:-2]) * 10
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obj = bpy.context.selected_objects[0]
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print(f'{f}处理前{height}mm模型尺寸: {obj.dimensions}')
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scale = height / obj.dimensions.z
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obj.scale = (scale, scale, scale)
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bpy.ops.object.transform_apply(scale=True)
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print(f'{f}处理后{height}mm模型尺寸: {obj.dimensions}')
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bpy.ops.export_scene.obj(filepath=os.path.join(path, f'{pid}.obj'))
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if os.path.exists(os.path.join(path, f)):
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os.remove(os.path.join(path, f))
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os.rename(os.path.join(path, f'{pid}.obj'), os.path.join(path, f))
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config.oss_bucket.put_object_from_file(f'objs/print/{pid}/{f}', os.path.join(path, f))
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# 重新加载模型，然后生成数字模型
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bpy.ops.object.delete(use_global=False, confirm=False)
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fix_link_texture(pid)
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bpy.ops.import_scene.obj(filepath=filename_original)
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obj = bpy.context.selected_objects[0]
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bpy.context.view_layer.objects.active = obj
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obj.select_set(True)
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if pid == '85964': bpy.ops.wm.save_as_mainfile(filepath=os.path.join(path, f'{pid}_{orderId}.blend'))
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scale = 90 / obj.dimensions.z
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obj.scale = (scale, scale, scale)
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headcount = res.json()['data']['headcount']
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bm = bmesh_copy_from_object(obj)
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obj_volume = round(bm.calc_volume() / 1000, 3)
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print('volume:', obj_volume)
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print('weight:', obj_volume * 1.2, 'g')
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faces = len(obj.data.polygons)
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print('faces:', faces)
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upload_res = requests.get(f'{upload_obj_volume_url}?pid={pid}&order_id={orderId}&faces={faces}&volume={obj_volume}&headcount={headcount}')
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print('上传模型体积:', upload_res.text)
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# 生成数字模型
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faces_dest = 120000 * headcount
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# 减面
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faces_current = len(obj.data.polygons)
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bpy.ops.object.modifier_add(type='DECIMATE')
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bpy.context.object.modifiers["Decimate"].ratio = faces_dest / faces_current
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bpy.ops.object.modifier_apply(modifier="Decimate")
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bpy.ops.object.origin_set(type='ORIGIN_CENTER_OF_VOLUME', center='MEDIAN')
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bpy.context.object.location[0] = 0
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bpy.context.object.location[1] = 0
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bpy.ops.object.transform_apply(location=True, rotation=True, scale=True)
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bpy.ops.export_scene.obj(filepath=os.path.join(path, f'{pid}_decimate.obj'))
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bpy.ops.export_scene.gltf(filepath=os.path.join(path, f'{pid}_decimate.glb'), export_format='GLB', export_apply=True, export_jpeg_quality=80)
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config.oss_bucket.put_object_from_file(f'glbs/3d/{pid}.glb', os.path.join(path, f'{pid}_decimate.glb'))
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bpy.ops.wm.quit_blender()
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if __name__ == '__main__':
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if platform.system() == 'Windows':
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workdir = 'd:\\'
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else:
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workdir = '/data/datasets/'
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if len(sys.argv) - (sys.argv.index("--") + 1) < 1:
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print("Usage: blender -b -P resize_model.py -- <orderId>")
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sys.exit(1)
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orderId = sys.argv[sys.argv.index("--") + 1]
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main()
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