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Unity Engine

AddForceAtPosition(Vector3, Vector3, ForceMode)

Applies a force at a specific position, resulting in applying a torque and force on the object.
Read time 1 minuteLast updated 12 days ago

Definition

  • Type: Method
  • Namespace: UnityEngine
  • Assembly: UnityEngine.PhysicsModule
public void AddForceAtPosition(Vector3 force, Vector3 position, ForceMode mode)

Parameters

force

Vector3
The force vector in world coordinates.

position

Vector3
A position in world coordinates.

mode

ForceMode
The type of force to apply.

Remarks

For realistic effects, 
position
should be approximately in the range of the surface of the Articulation Body. This is ideal for simulating explosions. To create realistic explosions, apply forces over several frames instead of just one. Note that when 
position
is far away from the center of the Articulation Body, the applied torque will be unrealistically large.
You can only apply a force to an active ArticulationBody. If a GameObject is inactive, AddForceAtPosition has no effect.
ForceMode.Force mode modifies the Linear Velocity Per Second and Angular Velicity Per Second accumulators and ForceMode.Impulse mode modifies the Linear Velocity Per Step and Angular Velocity Per Step accumulators. Mixing these 2 ForceModes doesn't work for Articulation Bodies and will result in only the Linear Velocity Per Second accumulator being applied.
For more information on how ForceMode affects velocity, see Rigidbody.AddForce.
Applying a force to an ArticulationBody wakes up that body. If the force size is zero then the ArticulationBody does not wake up.
Unit of measurement - N (newtons).
This method does not support ForceMode.Acceleration and ForceMode.VelocityChange.
Additional Resources: ArticulationBody.AddForce, ArticulationBody.AddRelativeForce, ArticulationBody.AddTorque.

Examples

using UnityEngine;using System.Collections;public class ExampleClass : MonoBehaviour{    void ApplyForce(ArticulationBody body)    {        Vector3 direction = body.transform.position - transform.position;        body.AddForceAtPosition(direction.normalized, transform.position);    }}