IC Python API:RLPy RINode

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Main article: Modules. Last modified: 04/14/2020

Description

This class is used to access node parameters in a character skeleton or scene object. Retrievable parameters include name, ID, parent node, list of child nodes, and more. Update to get the world-transform of the bone node for the current point in time.

Inheritance

RIBase > RINode 

Member Functions

GetName ( self )

Get the name of the node in a character skeleton or scene object.

Returns

Name of the node - str
1 # Get root bone
2 avatar_list = RLPy.RScene.GetAvatars()
3 avatar = avatar_list[0]
4 skeleton_component = avatar.GetSkeletonComponent()
5 root_bone = skeleton_component.GetRootBone()
6 
7 # Get root bone node name
8 node_name = root_bone.GetName()
9 print(node_name)

GetID ( self )

Get the ID of the node in a character skeleton or scene object.

Returns

ID of the node - int
1 # Get root bone
2 avatar_list = RLPy.RScene.GetAvatars()
3 avatar = avatar_list[0]
4 skeleton_component = avatar.GetSkeletonComponent()
5 root_bone = skeleton_component.GetRootBone()
6 
7 # Get root bone node ID
8 node_id = root_bone.GetID()
9 print(node_id)

GetParent ( self )

Get the parent node of the bone node in a character skeleton or scene object. If a parent does not exist, then return None.

Returns

Parent node - RINode
No parent node - None
1 # Get root bone
2 avatar_list = RLPy.RScene.GetAvatars()
3 avatar = avatar_list[0]
4 skeleton_component = avatar.GetSkeletonComponent()
5 root_bone = skeleton_component.GetRootBone()
6 
7 # Get root bone parent node
8 parent_node = root_bone.GetParent()
9 print(parent_node)

GetChildren ( self )

Get a list of child nodes for a node in a character skeleton or scene object. If this node does not have child nodes, then return None.

See Also: GetParent

Returns

List of child nodes - RINode list
No child nodes - None
1 # Get root bone
2 avatar_list = RLPy.RScene.GetAvatars()
3 avatar = avatar_list[0]
4 skeleton_component = avatar.GetSkeletonComponent()
5 root_bone = skeleton_component.GetRootBone()
6 
7 # Get root bone children node list
8 children_node_list = root_bone.GetChildren()
9 print(children_node_list)

LocalTransform ( self )

Get the local-transform for a node in a character skeleton or scene object.

See Also: WorldTransform

Returns

Node local-transform - RTransform
1 # Get root bone
2 avatar_list = RLPy.RScene.GetAvatars()
3 avatar = avatar_list[0]
4 skeleton_component = avatar.GetSkeletonComponent()
5 root_bone = skeleton_component.GetRootBone()
6 
7 # Get root bone local transform
8 local_transform = root_bone.LocalTransform()
9 print(local_transform)

WorldTransform ( self )

Get the world-transform for a node in a character skeleton or scene object.

See Also: LocalTransform

Returns

Node world-transform - RTransform
1 # Get root bone
2 avatar_list = RLPy.RScene.GetAvatars()
3 avatar = avatar_list[0]
4 skeleton_component = avatar.GetSkeletonComponent()
5 root_bone = skeleton_component.GetRootBone()
6 
7 # Get root bone world transform
8 world_transform = root_bone.WorldTransform()
9 print(world_transform)

WorldToLocal ( self, kWorldMatrix )

Convert the world-transform matrix for a node in a character skeleton or scene object to local-transform matrix.

See Also: LocalToWorld

Parameters

kWorldMatrix [IN] Node world-transform matrix - RMatrix4

Returns

Node local-transform matrix - RMatrix4
 1 # Get root bone
 2 avatar_list = RLPy.RScene.GetAvatars()
 3 avatar = avatar_list[0]
 4 skeleton_component = avatar.GetSkeletonComponent()
 5 root_bone = skeleton_component.GetRootBone()
 6 
 7 # Transfer root bone world transform matrix to local transform matrix
 8 world_transform = root_bone.WorldTransform()
 9 world_matrix = world_transform.Matrix()  
10 world_to_local = bone.WorldToLocal(world_matrix)
11 print(world_to_local)

LocalToWorld ( self, kLocalMatrix )

Convert the local-transform matrix for a node in a character skeleton or scene object to world-transform matrix.

See Also: WorldToLocal

Parameters

kLocalMatrix [IN] Node local-transform matrix - RMatrix4

Returns

Node local-transform matrix - RMatrix4
1 # Transfer root bone local transform matrix to world transform matrix
2 local_transform = root_bone.LocalTransform()
3 local_matrix = local_transform.Matrix()     
4 local_to_world = bone.LocalToWorld(local_matrix)
5 print(local_to_world)

Update ( self )

Update the Transform Control for a node in a character skeleton or scene object and update the scene. After the Update, the Transform Control's key values will reflect the world-transform values of the node for the current point in time.

 1 # Get root bone
 2 avatar_list = RLPy.RScene.GetAvatars()
 3 avatar = avatar_list[0]
 4 skeleton_component = avatar.GetSkeletonComponent()
 5 root_bone = skeleton_component.GetRootBone()
 6 
 7 # Get root bone child node world transform rotation x-axis value
 8 motion_bones = skeleton_component.GetMotionBones()
 9 child = motion_bones[1]
10 child_world = child.WorldTransform()
11 child_rot_x = child_world.R().x
12 
13 # Set float control rotation x-axis value
14 RLPy.RGlobal.SetTime(RLPy.RTime(0))
15 animation_clip = skeleton_component.GetClip(0)
16 root_control = animation_clip.GetControl("Layer", root_bone)
17 data_block = root_control.GetDataBlock()
18 float_control_rotate_x = data_block.GetControl("Rotation/RotationX")
19 float_control_rotate_x.SetValue(RLPy.RGlobal.GetTime(), math.radians(60))
20 
21 # Update root bone with float control
22 root_bone.Update()
23 
24 # Get root bone child node world transform rotation x-axis value after updated
25 new_child_world = child.WorldTransform()
26 after_update_child_rot_x = new_child_world.R().x