The Rigging mode is for animating models, allowing you to assign weights to meshes and edit weights.
The Weight we are talking about in rigging mode is a weighting value for how much the movement of the bones should be reflected in the vertices to make them move.
Values range from 0.0 to 1.0, where 0.0 means that moving the bone will not move the corresponding vertex, and 1.0 means that moving the bone will move the corresponding vertex with it.
Starting Rigging Mode
To use the Rigging Mode, you first need to set up bones for the rigging work.
This is the slot for selecting the bone that is positioned at the top of the hierarchy. The bone selected in this slot becomes the center point that controls the movement and rotation of the model.
Button to enable or disable rigging mode.
Clear Rigging Data
Button to clear rigging related data currently applied to the object.
This is displayed when rigging mode is disabled via the Active/Inactive button.
Root Bone Slot
This is the slot to set the top-level bone to apply to the selected UModelerX object.
Select the top-level bone object in the Hierarchy tab and click and drag to set it.
This is the area where you can see the tree structure of the bones assigned in the Root Bone slot.
The Bone Tree shows all connected bones, regardless of weight assignment, and allows for easy bone selection.
Bind Bone List
This area displays bones that have been assigned weights and are associated with a vertex.
Like the Bone Tree area, it allows for easy bone selection.
The Tools group in Rigging Mode is a collection of tools to modify weights or adjust bones.
The Weight tool is a tool that allows you to assign weights to selected vertices.
Weight Brush Tool
The Weight Brush tool allows you to assign a vertex's weight to a selected bone by brushing it.
Reset Poses Tool
The Reset Poses tool resets the position and rotation of a moved bone, returning it to its original default pose.
Rebind Poses Tool
The Rebind Poses tool is used to reset the position and rotation of a bone.
Weight Transfer Tool
The Weight Transfer tool is a tool that copies the weight applied to another object to the current object.
The Envelope Tool is a tool for editing an Envelope, which is an encapsulated volume that gives weight to vertices.