Missing RNA Path Defines for 'rigid_body.kinematic' #40913

New Issue

Warwick Molloy · 2014-07-01T22:38:03+02:00

Warwick Molloy commented

2014-07-01 22:38:03 +02:00

System Information
Windows 8.1, nVidia GeForce GTX 770

Blender Version
2.71 (official) Dated: 2014-06-25 Hash: 9337574

Short description of error
Can't apply Keying Set that was defined by RMB Add Keying Set on the property 'Animated' in a Rigid Body setting.
The Keying Set referred to this as "rigid_body.kinematic"

Exact steps for others to reproduce the error
I followed the steps for Method 1 listed here: http://aligorith.blogspot.com.au/2010/12/animating-in-25-getting-to-grips-with.html
I am trying to insert a key frame for the 'animated' option on a number of objects all in a group. Having defined the keying set using method 1, I tried to apply it but get the message "Keying Set failed to insert any keyframes" and, as per the blog, I'm raising this bug report because the RNA Path may not yet have been defined in Blender.

                - Exported Python Script for Keying Set-----------------

Keying Set: ButtonKeyingSet

import bpy

scene = bpy.context.scene

Keying Set Level declarations

ks = scene.keying_sets.new(idname="ButtonKeyingSet", name="AnimatedCollision Keying Set")
ks.bl_description = "Marks objects as animated in the rigid body settings"

ks.bl_options = {'INSERTKEY_VISUAL'}

ID's that are commonly used

id_0 = bpy.data.groups["03-CollissionRingRocks"]

Path Definitions

ksp = ks.paths.add(id_0, 'rigid_body.kinematic', index=0)

**System Information** Windows 8.1, nVidia GeForce GTX 770 **Blender Version** 2.71 (official) Dated: 2014-06-25 Hash: 9337574 **Short description of error** Can't apply Keying Set that was defined by RMB Add Keying Set on the property 'Animated' in a Rigid Body setting. The Keying Set referred to this as "rigid_body.kinematic" **Exact steps for others to reproduce the error** I followed the steps for Method 1 listed here: http://aligorith.blogspot.com.au/2010/12/animating-in-25-getting-to-grips-with.html I am trying to insert a key frame for the 'animated' option on a number of objects all in a group. Having defined the keying set using method 1, I tried to apply it but get the message "Keying Set failed to insert any keyframes" and, as per the blog, I'm raising this bug report because the RNA Path may not yet have been defined in Blender. - Exported Python Script for Keying Set----------------- # Keying Set: ButtonKeyingSet import bpy scene = bpy.context.scene # Keying Set Level declarations ks = scene.keying_sets.new(idname="ButtonKeyingSet", name="AnimatedCollision Keying Set") ks.bl_description = "Marks objects as animated in the rigid body settings" ks.bl_options = {'INSERTKEY_VISUAL'} # ID's that are commonly used id_0 = bpy.data.groups["03-CollissionRingRocks"] # Path Definitions ksp = ks.paths.add(id_0, 'rigid_body.kinematic', index=0)

Warwick Molloy commented

2014-07-01 22:38:03 +02:00

Changed status to: 'Open'

Warwick Molloy commented

2014-07-01 22:38:03 +02:00

Added subscriber: @WazzaM

Joshua Leung commented

2014-07-02 02:39:00 +02:00

Added subscriber: @JoshuaLeung

Joshua Leung commented

2014-07-02 02:39:00 +02:00

Have you manually edited the keying set? Specifically, the ID block used (as shown above) appears to be a group, and not an object as it should be.

Joshua Leung commented

2014-07-02 03:20:29 +02:00

EDIT: Ah... I overlooked the description...

Currently, groups cannot be used to host animation data themselves, so it's not possible to have all this animation in a single action attached to the group (with paths relative to that).

If you simply want a keying set which goes through and keyframes this setting for all objects within that group (but the keyframes don't need to belong to the same action), you can implement a keying set using python as follows:

import bpy
import keyingsets_utils
from bpy.types import KeyingSetInfo

class AnimatedCollisionKeyingSet(KeyingSetInfo):
    bl_idname = "AnimatedCollision"
    bl_name = "Animated Collision"
    
    def poll(ksi, context):
        return True             # XXX: you may want to restrict this to only happen when an object from that group is selected. In that case, replace this function with the line below

 #poll = keyingsets_utils.RKS_POLL_selected_items     # (or similar)

    def iterator(ksi, context, ks):
        group = bpy.data.groups["03-CollissionRingRocks"]
        for ob in group.objects:
            ksi.generate(context, ks, ob)

    def generate(ksi, context, ks, data):
        ks.paths.add(data, 'rigid_body.kinematic', index=0)

EDIT: Ah... I overlooked the description... Currently, groups cannot be used to host animation data themselves, so it's not possible to have all this animation in a single action attached to the group (with paths relative to that). If you simply want a keying set which goes through and keyframes this setting for all objects within that group (but the keyframes don't need to belong to the same action), you can implement a keying set using python as follows: ``` import bpy import keyingsets_utils from bpy.types import KeyingSetInfo class AnimatedCollisionKeyingSet(KeyingSetInfo): bl_idname = "AnimatedCollision" bl_name = "Animated Collision" def poll(ksi, context): return True # XXX: you may want to restrict this to only happen when an object from that group is selected. In that case, replace this function with the line below ``` #poll = keyingsets_utils.RKS_POLL_selected_items # (or similar) ``` def iterator(ksi, context, ks): group = bpy.data.groups["03-CollissionRingRocks"] for ob in group.objects: ksi.generate(context, ks, ob) ``` ``` def generate(ksi, context, ks, data): ks.paths.add(data, 'rigid_body.kinematic', index=0)

Joshua Leung commented

2014-07-02 03:23:17 +02:00

Changed status from 'Open' to: 'Archived'

Joshua Leung closed this issue

2014-07-02 03:23:17 +02:00

Joshua Leung self-assigned this 2014-07-02 03:23:17 +02:00

Joshua Leung commented

2014-07-02 03:23:17 +02:00

For now, I won't consider this a bug report.

However, I have noted down some todo's from this relating to groups, which will unfortunately take some time to resolve.

For now, I won't consider this a bug report. However, I have noted down some todo's from this relating to groups, which will unfortunately take some time to resolve.

Warwick Molloy commented

2014-07-02 22:45:34 +02:00

Hi Aligorith

You've been awesome with this so I thought I'd let you know how I went.

I tried the code fragment you gave but nothing happens because the class isn't instantiated and never gets executed when I run it through the Scripting . I've looked at keyingsets_builtins.py and I appreciate this is similar to the builtin keyingsets and should plug in somehow but I'm not sure what to do next.

I have found I can create the keyframes via scripting (no keying sets though) using this code below but I'm trying to create two keyframes and the second overwrites the first. I'll probably figure this out but it's not real clear how the index plays a part in keyframes.

This might not be your area but as some feedback on the API, it's very powerful that I get the object back when I call fcurve.new() and it would be equally cool if I got a tuple or list back when I called .keyframe_points.add(n) so I could set the frame number and value. Of course the add() function could take the frame number and value as a parameter too, to make it really friendly. I'm trying to use a -1 index on the array of keyframe_points to get the last object and update it but the overwrite is still happening so I'm making some mistake. I'll try more with it...

import bpy

scene = bpy.context.scene
objects = bpy.data.objects

Keying Set Level declarations
ks = scene.keying_sets.new(idname="KinematicsKeyingSet", name="AnimatedCollision Keying Set")

ks.bl_description = "Marks objects as animated in the rigid body settings"

ks.bl_options = {'INSERTKEY_VISUAL'}


def AddKinematicKeyFrame(obj, frameNo, val):
	if obj.animation_data == None:
		obj.animation_data_create()
	actName = obj.name + "_pyAction"
	obj.animation_data.action = bpy.data.actions.new(name=actName)
	fc = obj.animation_data.action.fcurves
	idx = len( fc.values() )
	fcKin = fc.new(data_path="rigid_body.kinematic", index = idx)

# fcKin = fc.values()[0]

	fcKin.keyframe_points.add(1)

# get last keyframepoint

	kfp = fcKin.keyframe_points[-1]
	kfp.co = frameNo, val

Path Definitions

for i in range(1,401):
	objId = "03-Saturn-ring-Rock.%03d"%i
	obj = objects[objId]
	AddKinematicKeyFrame(obj, 0.0, 1.0)
	AddKinematicKeyFrame(obj, 79.0, 0.0)

Hi Aligorith You've been awesome with this so I thought I'd let you know how I went. I tried the code fragment you gave but nothing happens because the class isn't instantiated and never gets executed when I run it through the Scripting . I've looked at keyingsets_builtins.py and I appreciate this is similar to the builtin keyingsets and should plug in somehow but I'm not sure what to do next. I have found I can create the keyframes via scripting (no keying sets though) using this code below but I'm trying to create two keyframes and the second overwrites the first. I'll probably figure this out but it's not real clear how the index plays a part in keyframes. This might not be your area but as some feedback on the API, it's very powerful that I get the object back when I call fcurve.new() and it would be equally cool if I got a tuple or list back when I called .keyframe_points.add(n) so I could set the frame number and value. Of course the add() function could take the frame number and value as a parameter too, to make it really friendly. I'm trying to use a -1 index on the array of keyframe_points to get the last object and update it but the overwrite is still happening so I'm making some mistake. I'll try more with it... ``` import bpy scene = bpy.context.scene objects = bpy.data.objects ``` - Keying Set Level declarations - ks = scene.keying_sets.new(idname="KinematicsKeyingSet", name="AnimatedCollision Keying Set") # ks.bl_description = "Marks objects as animated in the rigid body settings" ``` ``` # ks.bl_options = {'INSERTKEY_VISUAL'} ``` def AddKinematicKeyFrame(obj, frameNo, val): if obj.animation_data == None: obj.animation_data_create() actName = obj.name + "_pyAction" obj.animation_data.action = bpy.data.actions.new(name=actName) fc = obj.animation_data.action.fcurves idx = len( fc.values() ) fcKin = fc.new(data_path="rigid_body.kinematic", index = idx) ``` # fcKin = fc.values()[0] ``` fcKin.keyframe_points.add(1) ``` # get last keyframepoint ``` kfp = fcKin.keyframe_points[-1] kfp.co = frameNo, val ``` # Path Definitions ``` for i in range(1,401): objId = "03-Saturn-ring-Rock.%03d"%i obj = objects[objId] AddKinematicKeyFrame(obj, 0.0, 1.0) AddKinematicKeyFrame(obj, 79.0, 0.0) ```

Warwick Molloy commented

2014-07-03 21:09:09 +02:00

I realised I needed to register the class you provided but get this:

>>> register()
Traceback (most recent call last):
  File "<blender_console>", line 1, in <module>
  File "<blender_console>", line 2, in register
RuntimeError: register_class(...):, missing bl_rna attribute from 'RNAMeta' instance (may not be registered)

I realised I needed to register the class you provided but get this: ``` >>> register() Traceback (most recent call last): File "<blender_console>", line 1, in <module> File "<blender_console>", line 2, in register RuntimeError: register_class(...):, missing bl_rna attribute from 'RNAMeta' instance (may not be registered) ```

Oscar Felipe Durón de Luna commented

2014-07-06 04:08:19 +02:00

Added subscriber: @AvenidaGez

Oscar Felipe Durón de Luna commented

2014-07-06 04:08:19 +02:00

I am not an expert, but working with an animation, in action editor, Usually at frame zero I do record all bones, location, rotation, scale
I do not know when it happened, but x time after working, bone head keyframe zero was not there, just one I did registered at frame 20.
So in the test, I had a jump, that is how I realized this time the bone head frame zero keyframe was missing
So I did added it again.
Tested, ok. Then of course at the end of the action, frame 320, there was a jump again because needed the copy of frame zero keyframe to cycle ok.
I added that keyframe, tested, all ok, no jumps.
Little time later, I needed to add a new bone head keyframe at frame 40, there appears the problem similar to described here
"keying set faile to insert any keyframe"
saved, reloaded, etc. the same message
So I did the same on other bones, insert a keyframe in between, this is, bones which have some keyframes betwwen start and end (320)
all, ok,
But trying in bone head failed with same message
so, a needed to insert a keyframe at frame 40, so I deleted all bones from there to the end (frame 320)
It worked, the bone head keyframe was inserted
continued working.
The message appeared again when I tried to insert a bone head in between
If I remove the frames from where I need to insert the keyframe to the end, then there is no error.

I am not an expert, but working with an animation, in action editor, Usually at frame zero I do record all bones, location, rotation, scale I do not know when it happened, but x time after working, bone head keyframe zero was not there, just one I did registered at frame 20. So in the test, I had a jump, that is how I realized this time the bone head frame zero keyframe was missing So I did added it again. Tested, ok. Then of course at the end of the action, frame 320, there was a jump again because needed the copy of frame zero keyframe to cycle ok. I added that keyframe, tested, all ok, no jumps. Little time later, I needed to add a new bone head keyframe at frame 40, there appears the problem similar to described here "keying set faile to insert any keyframe" saved, reloaded, etc. the same message So I did the same on other bones, insert a keyframe in between, this is, bones which have some keyframes betwwen start and end (320) all, ok, But trying in bone head failed with same message so, a needed to insert a keyframe at frame 40, so I deleted all bones from there to the end (frame 320) It worked, the bone head keyframe was inserted continued working. The message appeared again when I tried to insert a bone head in between If I remove the frames from where I need to insert the keyframe to the end, then there is no error.

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Missing RNA Path Defines for 'rigid_body.kinematic' #40913

Keying Set: ButtonKeyingSet

Keying Set Level declarations

ID's that are commonly used

Path Definitions

ks.bl_description = "Marks objects as animated in the rigid body settings"

ks.bl_options = {'INSERTKEY_VISUAL'}

Path Definitions