Opening the Tool
ℹ️ How to open: Content Browser → right-click any Skeletal Mesh → Character Tools → Create Body Occlusion Mapping Data…. This is the only way to open the editor — the tool is not a data asset and cannot be launched by double-clicking an asset.
Settings Panel
The left panel holds all configuration for the current session.
| Setting | Description |
|---|---|
| Body Skeletal Mesh | The body mesh to process. Hidden triangles will be removed from this mesh. |
| Target Occlusion Mapping Data | Read-only. Automatically set when the tool is opened via the right-click shortcut. |
| Clothing Meshes | One or more clothing meshes worn over the body. These define what counts as "covered". |
| Preview Animation | Optional animation sequence to preview on the body and clothing meshes. |
| Output Path | Content Browser folder where the generated assets will be saved. |
| Occluded Mesh Asset Name | Name of the trimmed skeletal mesh asset that will be created. |
| Mapping Asset Name | Name of the runtime lookup table asset that will be created or updated. |
| Occlusion Detected Info | Shows whether detection has been run in this session. |
| Hidden / Total Triangles Info | How many triangles were marked hidden vs the total count. |
Action Buttons
Detect Occlusion
Runs the full detection pass and updates the viewport. Can also refresh the baseline during Paint Mode without losing paint strokes.
Clear Detection
Resets the detection baseline to fully visible. Manually painted strokes are preserved.
Toggle Preview
Hides clothing meshes in the viewport to inspect the body with occluded regions highlighted.
Save Occluded Mesh
Saves the trimmed mesh and updates the runtime mapping table.
Preview Animation
Assign an animation sequence in the Preview Animation category to see how meshes move together in different poses.
| Control | Description |
|---|---|
| Animation Sequence | Drag an AnimSequence here. Both body and clothing meshes play the same animation. |
| Play / Pause | Start or stop playback in the viewport. |
| Timeline Scrub | Drag to a specific frame to check a particular pose. |
💡 Check problem poses: Scrub to extreme poses (arms raised, legs spread) to verify the hidden boundary doesn't reveal gaps. Use Paint Mode to fix any issues found.
Viewport Controls
| Input | Action |
|---|---|
| LMB drag | Orbit / rotate the camera (when not in paint mode) |
| RMB drag | Pan the camera |
| Scroll wheel | Zoom in / out |