Class XRGeneralGrabTransformer
Grab transformer which supports moving and rotating unconstrained with one or two interactors. Also allows clamped or unclamped scaling when using two interactors. Allows axis constraints on translation. This is the default grab transformer.
Inheritance
Implements
Inherited Members
Namespace: UnityEngine.XR.Interaction.Toolkit.Transformers
Assembly: solution.dll
Syntax
[AddComponentMenu("XR/Transformers/XR General Grab Transformer", 11)]
[HelpURL("https://docs.unity.cn/Packages/com.unity.xr.interaction.toolkit@3.0/api/UnityEngine.XR.Interaction.Toolkit.Transformers.XRGeneralGrabTransformer.html")]
public class XRGeneralGrabTransformer : XRBaseGrabTransformer, IXRGrabTransformer
Properties
| Name | Description |
|---|---|
| allowOneHandedScaling | Allow one handed scaling using the scale value provider if available. |
| allowTwoHandedRotation | Determines how rotation is calculated when using two hands for the grab interaction. |
| allowTwoHandedScaling | Allow scaling when using multi-grab interaction. |
| clampScaling | If enabled, scaling will abide by ratio ranges defined by minimumScaleRatio and maximumScaleRatio. |
| constrainedAxisDisplacementMode | Determines how the constrained axis displacement mode is computed. |
| maximumScaleRatio | Maximum scale multiplier applied to the initial scale captured on start. |
| minimumScaleRatio | Minimum scale multiplier applied to the initial scale captured on start. |
| oneHandedScaleSpeed | Scaling speed over time for one handed scaling based on the IXRScaleValueProvider |
| permittedDisplacementAxes | Permitted axes for translation displacement relative to the object's initial rotation. |
| registrationMode | Controls how this grab transformer will be registered automatically at startup. |
| scaleMultiplier | Scales the distance of displacement between interactors needed to modify the scale interactable. |
| thresholdMoveRatioForScale | (Two Handed Scaling) Percentage as a measure of 0 to 1 of scaled relative hand displacement required to trigger scale operation. If this value is 0f, scaling happens the moment both grab interactors move closer or further away from each other. Otherwise, this percentage is used as a threshold before any scaling happens. |
Methods
| Name | Description |
|---|---|
| Awake() | See MonoBehaviour. |
| OnGrab(XRGrabInteractable) | Called by Unity when the given Interactable is grabbed (in other words, when entering the Select state). This method won't be called again until the Interactable is released by every Interactor. Use this to do any code initialization based on the first Interactor that selects the Interactable. |
| OnGrabCountChanged(XRGrabInteractable, Pose, Vector3) | Called by Unity each time the number of selections changes for the given Interactable while grabbed by at least one Interactor, including when it is first grabbed. Use this to do any code initialization based on each Interactor currently selecting the Interactable, for example computing the initial distance between both Interactors grabbing the object. |
| Process(XRGrabInteractable, UpdatePhase, ref Pose, ref Vector3) | Called by the linked Interactable to calculate the target pose and scale.
Modify the value of |