如何从 Blender 导出网格的运动？
How to export a mesh's movement from Blender?
我在 Blender 中有一个简单的 UV 球体，它从 A 点移动到 B 点（我通过在位置 A 上按 "I" 按钮来设置它，点击 LocRot，然后点击 B 点的 LocRot以及）。
我想导出机芯。
为了导出我使用的相机运动
搅拌机 Foundation\Blender.74\scripts\addons\io_anim_camera.py
（这是相机和标记 (.py) 导出器。）
它产生以下输出：
...
...
# new frame
scene.frame_set(1 + frame)
obj = cameras['Camera.003']
obj.location = -272.1265563964844, -155.54611206054688, -121.49121856689453 <-- here is the current coordinate of the camera, this is what I need for spheres
obj.scale = 0.9999998807907104, 0.9999998807907104, 0.9999999403953552
obj.rotation_euler = -1.6492990255355835, 0.00035389664117246866, 0.009288366883993149
obj.keyframe_insert('location')
obj.keyframe_insert('scale')
obj.keyframe_insert('rotation_euler')
data = obj.data
data.lens = 35.0
data.keyframe_insert('lens')
...
...
我正在为网格寻找同样的东西。
所以这是相机基本导出器的代码：
# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
# <pep8 compliant>
bl_info = {
"name": "Export Camera Animation",
"author": "Campbell Barton",
"version": (0, 1),
"blender": (2, 57, 0),
"location": "File > Export > Cameras & Markers (.py)",
"description": "Export Cameras & Markers (.py)",
"warning": "",
"wiki_url": "http://wiki.blender.org/index.php/Extensions:2.6/Py/"
"Scripts/Import-Export/Camera_Animation",
"support": 'OFFICIAL',
"category": "Import-Export",
}
import bpy
def write_cameras(context, filepath, frame_start, frame_end, only_selected=False):
data_attrs = (
'lens',
'shift_x',
'shift_y',
'dof_distance',
'clip_start',
'clip_end',
'draw_size',
)
obj_attrs = (
'hide_render',
)
fw = open(filepath, 'w').write
scene = bpy.context.scene
cameras = []
for obj in scene.objects:
if only_selected and not obj.select:
continue
if obj.type != 'CAMERA':
continue
cameras.append((obj, obj.data))
frame_range = range(frame_start, frame_end + 1)
fw("import bpy\n"
"cameras = {}\n"
"scene = bpy.context.scene\n"
"frame = scene.frame_current - 1\n"
"\n")
for obj, obj_data in cameras:
fw("data = bpy.data.cameras.new(%r)\n" % obj.name)
for attr in data_attrs:
fw("data.%s = %s\n" % (attr, repr(getattr(obj_data, attr))))
fw("obj = bpy.data.objects.new(%r, data)\n" % obj.name)
for attr in obj_attrs:
fw("obj.%s = %s\n" % (attr, repr(getattr(obj, attr))))
fw("scene.objects.link(obj)\n")
fw("cameras[%r] = obj\n" % obj.name)
fw("\n")
for f in frame_range:
scene.frame_set(f)
fw("# new frame\n")
fw("scene.frame_set(%d + frame)\n" % f)
for obj, obj_data in cameras:
fw("obj = cameras['%s']\n" % obj.name)
matrix = obj.matrix_world.copy()
fw("obj.location = %r, %r, %r\n" % matrix.to_translation()[:])
fw("obj.scale = %r, %r, %r\n" % matrix.to_scale()[:])
fw("obj.rotation_euler = %r, %r, %r\n" % matrix.to_euler()[:])
fw("obj.keyframe_insert('location')\n")
fw("obj.keyframe_insert('scale')\n")
fw("obj.keyframe_insert('rotation_euler')\n")
# only key the angle
fw("data = obj.data\n")
fw("data.lens = %s\n" % obj_data.lens)
fw("data.keyframe_insert('lens')\n")
fw("\n")
# now markers
fw("# markers\n")
for marker in scene.timeline_markers:
fw("marker = scene.timeline_markers.new(%r)\n" % marker.name)
fw("marker.frame = %d + frame\n" % marker.frame)
# will fail if the cameras not selected
if marker.camera:
fw("marker.camera = cameras.get(%r)\n" % marker.camera.name)
fw("\n")
from bpy.props import StringProperty, IntProperty, BoolProperty
from bpy_extras.io_utils import ExportHelper
class CameraExporter(bpy.types.Operator, ExportHelper):
"""Save a python script which re-creates cameras and markers elsewhere"""
bl_idname = "export_animation.cameras"
bl_label = "Export Camera & Markers"
filename_ext = ".py"
filter_glob = StringProperty(default="*.py", options={'HIDDEN'})
frame_start = IntProperty(name="Start Frame",
description="Start frame for export",
default=1, min=1, max=300000)
frame_end = IntProperty(name="End Frame",
description="End frame for export",
default=250, min=1, max=300000)
only_selected = BoolProperty(name="Only Selected",
default=True)
def execute(self, context):
write_cameras(context, self.filepath, self.frame_start, self.frame_end, self.only_selected)
return {'FINISHED'}
def invoke(self, context, event):
self.frame_start = context.scene.frame_start
self.frame_end = context.scene.frame_end
wm = context.window_manager
wm.fileselect_add(self)
return {'RUNNING_MODAL'}
def menu_export(self, context):
import os
default_path = os.path.splitext(bpy.data.filepath)[0] + ".py"
self.layout.operator(CameraExporter.bl_idname, text="Cameras & Markers (.py)").filepath = default_path
def register():
bpy.utils.register_module(__name__)
bpy.types.INFO_MT_file_export.append(menu_export)
def unregister():
bpy.utils.unregister_module(__name__)
bpy.types.INFO_MT_file_export.remove(menu_export)
if __name__ == "__main__":
register()
所以有可能吗？如何更改此代码以导出球体的运动？
好吧，如果您不想将运动导出为 Python 脚本，而是以文本或 CSV 格式导出。然后看下面的代码片段。
CSV 导出可以像这样用于相机：
fw("# frame camera x y z qx qy qz qw\n")
for f in frame_range:
scene.frame_set(f)
for obj, obj_data in cameras:
matrix = obj.matrix_world.copy()
fw("%d," % f)
fw("%s," % obj.name)
fw("%r,%r,%r," % matrix.to_translation()[:])
fw("%r,%r,%r,%r" % matrix.to_quaternion()[:])
fw("\n")
from bpy.props import StringProperty, IntProperty, BoolProperty
from bpy_extras.io_utils import ExportHelper
class CameraExporter(bpy.types.Operator, ExportHelper):
"""Export camera trajectory to a file"""
bl_idname = "export_trajectory.cameras"
bl_label = "Export camera trajectory"
filename_ext = ".csv"
filter_glob = StringProperty(default="*.csv", options={'HIDDEN'})
在我看来，它应该对场景中的任何其他对象都具有类似的作用。
不过还没有尝试过其他对象！
我在 Blender 中有一个简单的 UV 球体，它从 A 点移动到 B 点（我通过在位置 A 上按 "I" 按钮来设置它，点击 LocRot，然后点击 B 点的 LocRot以及）。
我想导出机芯。
为了导出我使用的相机运动 搅拌机 Foundation\Blender.74\scripts\addons\io_anim_camera.py （这是相机和标记 (.py) 导出器。）
它产生以下输出：
...
...
# new frame
scene.frame_set(1 + frame)
obj = cameras['Camera.003']
obj.location = -272.1265563964844, -155.54611206054688, -121.49121856689453 <-- here is the current coordinate of the camera, this is what I need for spheres
obj.scale = 0.9999998807907104, 0.9999998807907104, 0.9999999403953552
obj.rotation_euler = -1.6492990255355835, 0.00035389664117246866, 0.009288366883993149
obj.keyframe_insert('location')
obj.keyframe_insert('scale')
obj.keyframe_insert('rotation_euler')
data = obj.data
data.lens = 35.0
data.keyframe_insert('lens')
...
...
我正在为网格寻找同样的东西。 所以这是相机基本导出器的代码：
# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
# <pep8 compliant>
bl_info = {
"name": "Export Camera Animation",
"author": "Campbell Barton",
"version": (0, 1),
"blender": (2, 57, 0),
"location": "File > Export > Cameras & Markers (.py)",
"description": "Export Cameras & Markers (.py)",
"warning": "",
"wiki_url": "http://wiki.blender.org/index.php/Extensions:2.6/Py/"
"Scripts/Import-Export/Camera_Animation",
"support": 'OFFICIAL',
"category": "Import-Export",
}
import bpy
def write_cameras(context, filepath, frame_start, frame_end, only_selected=False):
data_attrs = (
'lens',
'shift_x',
'shift_y',
'dof_distance',
'clip_start',
'clip_end',
'draw_size',
)
obj_attrs = (
'hide_render',
)
fw = open(filepath, 'w').write
scene = bpy.context.scene
cameras = []
for obj in scene.objects:
if only_selected and not obj.select:
continue
if obj.type != 'CAMERA':
continue
cameras.append((obj, obj.data))
frame_range = range(frame_start, frame_end + 1)
fw("import bpy\n"
"cameras = {}\n"
"scene = bpy.context.scene\n"
"frame = scene.frame_current - 1\n"
"\n")
for obj, obj_data in cameras:
fw("data = bpy.data.cameras.new(%r)\n" % obj.name)
for attr in data_attrs:
fw("data.%s = %s\n" % (attr, repr(getattr(obj_data, attr))))
fw("obj = bpy.data.objects.new(%r, data)\n" % obj.name)
for attr in obj_attrs:
fw("obj.%s = %s\n" % (attr, repr(getattr(obj, attr))))
fw("scene.objects.link(obj)\n")
fw("cameras[%r] = obj\n" % obj.name)
fw("\n")
for f in frame_range:
scene.frame_set(f)
fw("# new frame\n")
fw("scene.frame_set(%d + frame)\n" % f)
for obj, obj_data in cameras:
fw("obj = cameras['%s']\n" % obj.name)
matrix = obj.matrix_world.copy()
fw("obj.location = %r, %r, %r\n" % matrix.to_translation()[:])
fw("obj.scale = %r, %r, %r\n" % matrix.to_scale()[:])
fw("obj.rotation_euler = %r, %r, %r\n" % matrix.to_euler()[:])
fw("obj.keyframe_insert('location')\n")
fw("obj.keyframe_insert('scale')\n")
fw("obj.keyframe_insert('rotation_euler')\n")
# only key the angle
fw("data = obj.data\n")
fw("data.lens = %s\n" % obj_data.lens)
fw("data.keyframe_insert('lens')\n")
fw("\n")
# now markers
fw("# markers\n")
for marker in scene.timeline_markers:
fw("marker = scene.timeline_markers.new(%r)\n" % marker.name)
fw("marker.frame = %d + frame\n" % marker.frame)
# will fail if the cameras not selected
if marker.camera:
fw("marker.camera = cameras.get(%r)\n" % marker.camera.name)
fw("\n")
from bpy.props import StringProperty, IntProperty, BoolProperty
from bpy_extras.io_utils import ExportHelper
class CameraExporter(bpy.types.Operator, ExportHelper):
"""Save a python script which re-creates cameras and markers elsewhere"""
bl_idname = "export_animation.cameras"
bl_label = "Export Camera & Markers"
filename_ext = ".py"
filter_glob = StringProperty(default="*.py", options={'HIDDEN'})
frame_start = IntProperty(name="Start Frame",
description="Start frame for export",
default=1, min=1, max=300000)
frame_end = IntProperty(name="End Frame",
description="End frame for export",
default=250, min=1, max=300000)
only_selected = BoolProperty(name="Only Selected",
default=True)
def execute(self, context):
write_cameras(context, self.filepath, self.frame_start, self.frame_end, self.only_selected)
return {'FINISHED'}
def invoke(self, context, event):
self.frame_start = context.scene.frame_start
self.frame_end = context.scene.frame_end
wm = context.window_manager
wm.fileselect_add(self)
return {'RUNNING_MODAL'}
def menu_export(self, context):
import os
default_path = os.path.splitext(bpy.data.filepath)[0] + ".py"
self.layout.operator(CameraExporter.bl_idname, text="Cameras & Markers (.py)").filepath = default_path
def register():
bpy.utils.register_module(__name__)
bpy.types.INFO_MT_file_export.append(menu_export)
def unregister():
bpy.utils.unregister_module(__name__)
bpy.types.INFO_MT_file_export.remove(menu_export)
if __name__ == "__main__":
register()
所以有可能吗？如何更改此代码以导出球体的运动？
好吧，如果您不想将运动导出为 Python 脚本，而是以文本或 CSV 格式导出。然后看下面的代码片段。
CSV 导出可以像这样用于相机：
fw("# frame camera x y z qx qy qz qw\n")
for f in frame_range:
scene.frame_set(f)
for obj, obj_data in cameras:
matrix = obj.matrix_world.copy()
fw("%d," % f)
fw("%s," % obj.name)
fw("%r,%r,%r," % matrix.to_translation()[:])
fw("%r,%r,%r,%r" % matrix.to_quaternion()[:])
fw("\n")
from bpy.props import StringProperty, IntProperty, BoolProperty
from bpy_extras.io_utils import ExportHelper
class CameraExporter(bpy.types.Operator, ExportHelper):
"""Export camera trajectory to a file"""
bl_idname = "export_trajectory.cameras"
bl_label = "Export camera trajectory"
filename_ext = ".csv"
filter_glob = StringProperty(default="*.csv", options={'HIDDEN'})
在我看来，它应该对场景中的任何其他对象都具有类似的作用。 不过还没有尝试过其他对象！