What Is the Copy Location Constraint in Blender?

The Copy Location constraint in Blender is a transform constraint that forces an object or bone to copy the positional coordinates of another object or bone in 3D space. By linking the spatial location of a target to an owner object, animators and riggers can automate movement, align objects effortlessly, and create complex mechanical or character rigs without manual keyframing. This article breaks down how the Copy Location constraint works, its essential settings, and practical application scenarios in Blender.

How the Copy Location Constraint Works

When applied to an object (the owner), the Copy Location constraint reads the X, Y, and Z translation data of a designated target object. The owner then updates its own position to match the target based on the chosen settings.

If the target moves anywhere in the scene, the owner moves instantly to match that location. This relationship is non-destructive, meaning removing the constraint restores the owner object to its original position.

Key Settings and Features

The constraint panel in Blender offers several controls to fine-tune how positional data is transferred:

  • Target: Specifies the object or armature bone whose position will be copied.
  • Axis Selection (X, Y, Z): Allows you to choose which axes to copy. For example, disabling the Z-axis means the owner will follow the target along the ground plane (X and Y) but ignore vertical movement.
  • Invert Checkboxes: Reverses the motion for specific axes. If the target moves +5 units on the X-axis, an inverted owner moves -5 units on the X-axis.
  • Offset: Retains the owner's original distance relative to the target before the constraint was applied. Without Offset enabled, the owner snaps directly to the target’s origin point.
  • Space Settings: Controls the coordinate system used for the location data. You can set both the target and owner to compute position in World Space, Local Space, or Pose Space (for armatures).
  • Influence: Controls how strongly the constraint affects the owner, ranging from 0.0 (no effect) to 1.0 (full effect). This can be keyframed for smooth transitions.

Common Use Cases in Blender

  • Character Rigging: Attaching accessories—such as tools, weapons, or clothing elements—to specific character bones so they follow movement accurately.
  • Mechanical Animation: Creating piston systems, gears, or linked machinery where parts must track specific reference points.
  • Camera Tracking: Forcing a camera or camera target to follow a moving character automatically without manually keyframing the camera's translation.
  • Complex UI and Controls: Using custom visual handles (control shapes) to drive the movement of hidden bones or objects elsewhere in the scene.