In this demo, keyframes are created at the object level, or IPO level (instead of vertex level).
In the sample video below, I used the monkey mesh model called Suzanne which comes with Blender.
This scripts adjusts the location and rotation at each keyframe.
--- BEGIN Script ---
#!BPY
"""
Name: 'Automated IPO keyframe insertion demo'
Blender: 244
Group: 'Animation'
Tooltip: 'Demo for automated IPO keyframe insertion using Python'
"""
__author__ = "Hide Winston Inada"
__version__ = "0.9 2008-1-03"
__bpydoc__ = """\
This script is a demo to show automated IPO keyframe insertion using Python.
"""
# $Id: $
# ***** BEGIN GPL LICENSE BLOCK *****
# Script Copyright (C) 2007, Hide Winston Inada, hideyuki _at_ gmail.com
#
# 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.
# ***** END GPL LICENCE BLOCK *****
import math
import Blender
from Blender import Window
from Blender import NMesh
from Blender import Object
import bpy
# Variables
nNewStartFrame = 1
nNewCurrentFrame = 1
nNewEndFrame = 120
nNoFrames = nNewEndFrame - nNewStartFrame + 1
nFirstKeyFrame = nNewStartFrame - 1 + nNoFrames/4
nSecondKeyFrame = nNewStartFrame - 1 + (nNoFrames/4)*2
nThirdKeyFrame = nNewStartFrame - 1 + (nNoFrames/4)*3
# Debug print out
print ("")
print ("Starting demo for automated IPO keyframe insertion using Python")
print ("Configurable parameter listing:")
print ("Start frame : " + str(nNewStartFrame))
print ("End frame : " + str(nNewEndFrame))
print ("Current frame : " + str(nNewCurrentFrame))
print ("Number of frames : " + str(nNoFrames))
print ("First keyframe : " + str(nFirstKeyFrame))
print ("Second keyframe : " + str(nSecondKeyFrame))
print ("Third keyframe : " + str(nThirdKeyFrame))
# Debug print out end
activeScene = bpy.data.scenes.active
activeObject = activeScene.objects.active
# Setting start, end, current frames
nOriginalStartFrame = Blender.Get('staframe')
# print("Original start frame : " + str(nOriginalStartFrame))
nOriginalCurrentFrame = Blender.Get('curframe')
# print("Original current frame : " + str(nOriginalCurrentFrame))
nOriginalEndFrame = Blender.Get('endframe')
# print("Original end frame : " + str(nOriginalEndFrame))
Blender.Set('curframe', nNewCurrentFrame)
cxt = activeScene.getRenderingContext()
cxt.startFrame(nNewStartFrame)
cxt.endFrame(nNewEndFrame)
Window.RedrawAll()
# Verifying to see if frames are set correctly
nResult = Blender.Get('staframe')
if(nNewStartFrame != nResult) :
print("Error in setting the start frame")
nResult = Blender.Get('endframe')
if(nNewEndFrame != nResult) :
print("Error in setting the end frame")
nResult = Blender.Get('curframe')
if(nNewCurrentFrame != nResult) :
print("Error in setting the current frame")
# Keyframe insertion
obj = activeObject
Blender.Set('curframe', nNewStartFrame)
obj.LocX = 0
obj.LocY = 0
obj.LocZ = 0
obj.RotZ = math.radians(90)
obj.insertIpoKey(Object.IpoKeyTypes.LOCROTSIZE)
Blender.Set('curframe', nNewEndFrame)
obj.LocX = 0
obj.LocY = 0
obj.LocZ = 0
obj.RotZ = math.radians(360+90)
obj.insertIpoKey(Object.IpoKeyTypes.LOCROTSIZE)
Blender.Set('curframe', nFirstKeyFrame)
obj.LocX = 4
obj.LocY = 0
obj.LocZ = 0
obj.RotZ = math.radians(180)
obj.insertIpoKey(Object.IpoKeyTypes.LOCROTSIZE)
Blender.Set('curframe', nSecondKeyFrame)
obj.LocX = 4
obj.LocY = 4
obj.LocZ = 0
obj.RotZ = math.radians(270)
obj.insertIpoKey(Object.IpoKeyTypes.LOCROTSIZE)
Blender.Set('curframe', nThirdKeyFrame)
obj.LocX = 0
obj.LocY = 4
obj.LocZ = 0
obj.RotZ = math.radians(360)
obj.insertIpoKey(Object.IpoKeyTypes.LOCROTSIZE)
# Finalization
print("Completed")
# References
# 1. For setting start, end frames, see:
# http://blenderartists.org/forum/archive/index.php/t-62993.html
--- END Script ---
