Configuring Objects for UI
- Ryan Chapman
- Catherine Hillier (Unlicensed)
In depth learning on Motive Scene Configuration can be found in this course in Motive Academy.
Colliders and Rigid Bodies
Scene objects can have UI elements attached to them. Most UI elements will attempt to avoid being occluded by the object as long as the object is configured properly. The UI positioner calculates the bounds of the UI elements and looks for overlap with colliders in the scene. Earlier versions of the SDK required colliders on UI elements to avoid collisions, but this is no longer the case. UI elements should not have colliders.
World UI Positioner
UI screens use World UI Positioner to detect collisions and make a best effort to be seen.
Camera Align Offset | Used in conjunction with the MoveInFrontOfCamera call, this applies an offset to the UI screen once the “front of camera” position is determined. |
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Min Distance | The closest this UI element can be moved to the user. |
Max Distance From Origin | The farthest this UI element can be moved from its origin. -1 means there is no limit. |
Max Distance | The maximum distance from the camera that this element can be moved. -1 means there is no limit. |
Tagalong Lerp Time | If tagalong is set, the duration of the tagalong “lerp” movement. |
Scale Down When Too Close | If true, the screen will scale down when it gets too close to the user. |
Scale Down Distance | The distance inside of which the screen scales down. |
Scale Down Scale | The amount to scale the screen down. |
Avoid Collisions | Avoid sitting inside of an object with a collider. |
Move In Front Of Objects | Moves the screen in front of any objects. This is different from Avoid Collisions because the screen may not be embedded inside of an object, but just hidden behind something (a wall for example). |
Head Height Max Delta | When setting the screen to the user’s head height, this specifies the maximum readjustment from above the user’s head. For example, we may want a screen to show on the third floor, so if the screen is already more than 2m above the user, don’t attempt to set the head height. |
Head Height Min Delta | Similar to above, except for the distance below the user’s head. |
Tagalong | If true, the screen will “tag along” inside the user’s viewing cone. |
Tagalong Cone Angle | The size of the cone inside of which the screen will tag along. |
Disable Collider When No Panels Showing | If this component is on the same object as a Panel Container, automatically enables/disables the collider when panels are showing. |
Reset When Panels Showing | Reset to initial position/rotation when a new screen is shown. |
Layer Mask | Layers to monitor for collisions. Should generally be set to exclude “Ignore Raycast”. |
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