- 1 Parameters of Skeleton Layers
- 2 Summary
- 3 Skeleton construction
- 4 Parameters of a Bone
- 5 Skeleton / Bones actions
- 6 See Also
I'm a Draft please help me to be efficient ...
Parameters of Skeleton Layers
The parameters of the skeleton layers are:
|Bones||list (Static List)||list|
In the skeleton layer, each vertex is influenced by a weighted average combination of bones maybe from different skeletons?.
There are two ways to make a vector be influenced by bone(s). First is the Link to Bone action that would give a 100% of influence of one bone to one vector. Second is the Link to Skeleton that is a semiautomatic way to give weighted influence to a vector from all the bones that overlaps its influence area over the vector position. The more covered the vector is by the influence area, the higher is the influence weight. In any case you can manually specify the bone and the influence that you want by editing the values in the vector (sub)parameters. We need to modify the bone(s) with handles to perform the indirect movement to the vectors that are influenced by it(them)
Add a "Skeleton layer" :
- If your Canvas is empty you can do that from the main or caret menus "<Layer> → <New Layer> → <Other> → Skeleton".
- If your canvas is not empty, right clicking inside the Layers Panel.
Once you have a "Skeleton layer", the first bone appears. You have created the first bone of your Skeleton, this is your first parent bone.
Each bones have few handles to control them : Origin, Angle, Length, Bone Wight and Tip Width. Take a look inside the Parameters Panel of the "Skeleton layer", those handles are relative to some of those values (with also some advanced parameters).
Now, you can had child bones :
- Right click on any handles of the parent bone you want and select "Create Child Bone".
- Repeat the operation, choosing accordingly the parent bone of your future bone (the parent of a hand bone is the arm, the parent bone of a finger is the hand bone...), to create your Skeleton.
Parameters of a Bone
The parameters of a bone are:
|Local Length Scale||1.00000||real|
|Recursive Length Scale||1.00000||real|
Local Length Scale
Has "Tip Width", "Bone Width" is used to set the influence of the bone before the use of "Link to Skeleton" action. "Bone Width" parameter can be adjusted by the witdh Handle. When adjusting the "Bone Width", the bone's shape change accordingly.
Recursive Length Scale
Has "Bone Width", "Tip Width" is used to set the influence of the bone before the use of "Link to Skeleton" action. "Tip Width" parameter can be adjusted by the witdh Handle. When adjusting the "Tip Width", the bone's shape change accordingly.
This parameter can be used to change the 'depth' (order) of a Bone in a Skeleton Layer.
Skeleton / Bones actions
Create Child Bone
When you add a "Skeleton Layer", only one bone is created. In order to create a usable skeleton, you will need to add more bones.
Right clicking on any handles of bone display a contextual menu. From this menu select "Create Child Bone" and a new child bone will be created. This child bone will move accordingly to his parent.
Link to Bone
"Link to Bone" link artwork, for example handles of a shape created with the Spline Tool, to a bone.
Select a single or multiple handles from your artwork, right click on a bone and from the contextual menu, select "Link to Bone". Now when you move the Bone, the selected handles also move.
See it in action in bones dev part 5
Link to Skeleton
Before you use "Link to Skeleton" you should adjust the "Bone width" and "Tip width" of each bones of you skeleton to set the bone shape.
Select one or more handles from your artwork, select the "Skeleton layer" right click on it and from the contextual menu, select "Link to Skeleton". All the handles covered by the bone shape will be automatically linked.
See it in action : Bones dev part 7
If you want to disconnect / unlink a bone from the part of the artwork it is linked to.
- From the Layers Panel, select the Skeleton Layer
- From the Parameters Panel, open the "Bones" list
- Select the corresponding "Item" (the according bone's handles will be highligthed whith red squares)
- Right click to open the context menu and select "Disconnect".