Just wanted to share current progress …
Purpose:
Crop a reduced, that is boiled down to
Location Rotation Scale
version of the movement a soft body on simulation does .
Why this?
- reducing data ( if you are lucky … you can have data using 1/100 or less memory, disk space … even better, because it it is baked hours of simulation time )
- explore how ‘real’ objects move … to give an estimate for ‘believable’ objects in space and time
#
# demo for the power and limits
# of vcloud_estimate_transform()
# used in SB_estimate_transform()
#
#AND YES it suffers "the rotation flip" ... i think you are too smart not knowing how to resolve that :)
#
class crop_softbody:
# noisy1 is pretty much a debug optiion .. to see what goes wrong
target_name="you"
sourec_name="suck"
first_frame=0
last_frame=0
inc_frame=1
def noisy1(ob):
print("noisy1 **************** ")
print("noisy1 tell you everthing you don't want to know ")
sb= ob.soft_body
if sb:
print("lcom:")
print(sb.lcom)
print("ob.location:")
print(ob.location)
print("lrot:")
print(sb.lrot)
print("lscale:")
print(sb.lscale)
print("euler:")
euler=sb.lrot.toEuler()
print(euler)
print("scale:")
scale=sb.lscale.scalePart()
print(scale)
print("noisy1 **************** ")
def estimated_to_animato(self,source, target):
sb= source.soft_body
if sb:
if target.rotation_mode in ["XYZ","XZY","YXZ","YZX","ZXY","ZYX"]:
#ugly direct copy to object matrix, not sure if that will work in future ??
for i in range(0,3):
for j in range(0,3):
target.matrix[i][j] = sb.lrot[i][j]
#not sure if that works with all euler modes ??
#target.rotation_euler= sb.lrot.toEuler()
if target.rotation_mode in ["QUATERNION"]:
target.rotation_quaternion= sb.lrot.toQuat()
target.location= sb.lcom
target.scale=sb.lscale.scale_part()
else:
print("object is not soft_body")
def _add_key(self,target):
if target.rotation_mode in ["QUATERNION"]:
target.keyframe_insert("rotation_quaternion")
if target.rotation_mode in ["XYZ","XZY","YXZ","YZX","ZXY","ZYX"]:
target.keyframe_insert("rotation_euler")
target.keyframe_insert("location")
target.keyframe_insert("scale")
def _add_with_increment(self,frame_inc):
t=bpy.context.scene.objects[self.target_name]
s= bpy.context.scene.objects[self.source_name]
if (s and t):
if s.soft_body.estimate_matrix:
#uncomment noisy1 .. if there are doubts on the matrix returned
#noisy1(s)
self.estimated_to_animato(s,t)
self._add_key(t)
bpy.context.scene.set_frame(bpy.context.scene.current_frame +frame_inc)
return (0)
else:
print("Source has estimate_matrix turned off")
return (1)
def _bake_v001(self):
print("SB bake first frame",self.first_frame,"last frame",self.last_frame,"inc",self.inc_frame)
print ("target name:",self.target_name,"source name:",self.source_name)
if (self.first_frame <= self.last_frame):
frames_to_go = self.last_frame - self.first_frame
bpy.context.scene.set_frame(self.first_frame)
actual = self.first_frame
while (actual < self.last_frame):
error = self._add_with_increment(self.inc_frame)
if(error):
print("Error in bake")
return (-actual)
actual += self.inc_frame
return (actual)
def debugoutparams(self):
print ("target name",self.target_name)
print ("source name",self.source_name)
print ("first_frame ",self.first_frame)
print ("last_frame ",self.last_frame)
print ("inc_frame ",self.inc_frame)
#needs UI to set source/target/increment ...
#so for testing
#make class instance
crsb = crop_softbody()
#set up
crsb.target_name= "XYZ_Mesh"
crsb.source_name= "Cube"
crsb.first_frame = 0
crsb.last_frame = 300
crsb.inc_frame =1
#crsb.debugoutparams()
#finally call it
print("running SB_to_Object bake ")
#run bake
crsb._bake_v001()
# might as well loop over frames ...
# deprecated tesing .. still
#error = crsb._add_with_increment(1)
#if(error):
# print("Error")
/me grumbles … 'd like to post the entire test file here …
and please … read the comments in the file … just in case they may answer some of your questions
well…
and there was a change on SVN at Revision: 26239
if target.scale=sb.lscale.scale_part() does not work for you
try target.scale=sb.lscale.scalePart()
complete test file is there (really bad stunt … sorry )
http://blenderartists.org/forum/showthread.php?p=1563693#post1563693
