LockedTrackConstraint - Verge3D User Manual - Soft8Soft
Description: Learn how to use LockedTrackConstraint in your interactive 3D apps made with Verge3D

TargetConstraint →

# LockedTrackConstraint

A constraint which makes the constrained object track the target and also locks on of the object's axes.

To influence some object, push a LockedTrackConstraint instance into the Object3D.constraints array.

## Constructor

### LockedTrackConstraint(target : Object3D)

target — constraint's target object.

## Properties

See the base TargetConstraint class for common properties.

### # .fixCameraLightRotation : Boolean

In Verge3D we use right-handed coordinate system with the Y axis pointing in the up direction, but Blender and 3ds Max uses right-handed coordinate system with Z axis pointing in the up direction (Verge3D Wiki). So, to correct the rotation for cameras and lights, set `fixCameraLightRotation = true`. Default is `false`.

### # .isLockedTrackConstraint : Boolean

Read-only flag to check if a given object is of type LockedTrackConstraint.

### # .lockAxis : String

The axis of the constrained object that is locked. Can be one of the `"X"`, `"Y"`, `"Z"`. Default is `"Y"`.

### # .trackAxis : String

The axis of the constrained object that tracks the target. Can be one of the `"X"`, `"-X"`, `"Y"`, `"-Y"`, `"Z"`, `"-Z"`. Default is `"X"`.

### # .type : String

The constraint's type. Equals to `"LockedTrackConstraint"`.

## Methods

See the base TargetConstraint class for common methods.

## Source

For more info on how to obtain the source code of this module see this page.