# Physics Constraint Ignore component reference > Explore the properties you can use to disable collisions between two 2D Physics Core objects. Explore the properties you can use to disable collisions between two connected 2D Physics Core objects. For more information, refer to [Add a constraint](/engine/6000.7/manual/unity2d/2d-physics-api/connect-objects/create-constraint.md). > **Note:** > > This documentation is about using Pose, Area, and Constraint components. To use 2D physics in the Unity Editor using components like the Rigidbody 2D component, refer to [2D physics](/engine/6000.7/manual/unity2d/2d-physics.md.md) instead. ## Pose | **Property** | **Description** | | ----------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Pose A Source** | Sets how Unity finds the first object this constraint connects to. The options are:**Auto**: Searches this GameObject and its parents for a Physics Pose component.**Custom**: Uses the Physics Pose component you assign to **Pose A Target**. | | **Pose A Target** | Sets the first Physics Pose component this constraint connects to. This property is available only if you set **Pose A Source** to **Custom**. Drag a GameObject with a Physics Pose component from the **Hierarchy** window to this property, or select the picker (**⊙**). | | **Pose B Target** | Sets the second object this constraint connects. Drag a GameObject with a Physics Pose component from the **Hierarchy** window to this property, or select the picker (**⊙**). | | **Refresh Poses** | Refreshes **Pose A Target** and **Pose B Target** and recreates the constraint. | ## Definition | **Property** | **Description** | | -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | **Definition Asset** | Sets an asset that sets the values of the properties in this section. By default, this property is empty, and Unity stores the values inside the component. To set a definition asset, drag a Physics Constraint Ignore Definition asset from the **Project** window to this property, or select the picker (**⊙**). For more information, refer to [Share properties across multiple 2D Physics Core components](/engine/6000.7/manual/unity2d/2d-physics-api/properties/definitions.md). | | **World Drawing** | Draws the constraint when Unity draws the debug visualization of the world. For more information, refer to [Visualize and edit 2D Physics Core scenes](/engine/6000.7/manual/unity2d/2d-physics-api/create-objects/debug-drawing.md). | ## User Data Use the properties in this section to add your own data to the component, and read it using the `U2D.Physics` API. For more information, refer to [Add custom data to a 2D Physics Core object](/engine/6000.7/manual/unity2d/2d-physics-api/properties/custom-data.md.md). | **Property** | **Description** | | ---------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Object** | Sets a custom object. Drag any object from the **Hierarchy** or **Project** windows to this property, or select the picker (**⊙**). | | **Physics Mask** | Sets a custom set of enabled and disabled layers. For more information, refer to [Configure collisions between 2D Physics Core objects](/engine/6000.7/manual/unity2d/2d-physics-api/interactions/collisions-enable.md.md). | | **Float** | Sets a custom floating-point number. | | **Int** | Sets a custom integer. | | **Int 64** | Sets a custom 64-bit integer. | | **Vector 3 Int** | Sets a custom 3D vector of integers. | | **Bool** | Sets a custom Boolean value. | ## Info This section displays information about the constraint. You can't directly edit the properties in this section. ### Handle | **Property** | **Description** | | -------------- | -------------------------------------------------------------------------------------------------- | | **Valid** | The state of the object. **True** means the object is in the simulation. | | **World** | The index number of the world the object belongs to. The default is 0, which is the default world. | | **Index** | The index number of the object in the world. | | **Generation** | The number of times Unity has used the same **Index** for different objects. | ## Additional resources * [Add a constraint](/engine/6000.7/manual/unity2d/2d-physics-api/connect-objects/create-constraint.md) * [Introduction to constraints](/engine/6000.7/manual/unity2d/2d-physics-api/connect-objects/joints.md) * [Collisions and interactions in 2D Physics Core](/engine/6000.7/manual/unity2d/2d-physics-api/interactions.md) * [Share properties across multiple 2D Physics Core components](/engine/6000.7/manual/unity2d/2d-physics-api/properties/definitions.md) * [Visualize and edit 2D Physics Core scenes](/engine/6000.7/manual/unity2d/2d-physics-api/create-objects/debug-drawing.md)