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Table of Contents
Warning! This version of documentation is OUTDATED, as it describes an older SDK version! Please switch to the documentation for the latest SDK version.
Warning! This version of documentation describes an old SDK version which is no longer supported! Please upgrade to the latest SDK version.

Physical Force

In This Article:

A physical force is a spherical object with a force that is applied to its center and attenuates as follows:

Here:

Name Description
distance Distance between the sphere center and the object.
radius Radius of the sphere in which the force is applied.
attenuation Force attenuation factor.

All physical bodies and particles that are within the radius of the force are pulled up to or away from the center of the physical force node. Also the bodies and particles can be rotated around the center of the physical force node.

Notice
The physical force will affect particles only if their physical mass is nonzero. The physical mass for the particles can be set on the Particles tab of the Parameters window.

Notice
The physical force can affect only a cloth, a rope or a rigid body. If the rigid body is used, a shape should be also assigned.

See also

  • A PhysicalForce class to edit physical force nodes via UnigineScript
  • A set of samples located in the data/samples/physicals folder:
    1. force_00
    2. force_01

Adding Physical Force

To add a physical force to the scene via UnigineEditor:

  1. Run the project with UnigineEditor.
  2. On the Menu bar, click Create -> Effect -> Physical Force.

  3. Click somewhere in the world to place the physical force.

The new physical force node will be added to UnigineEditor and you will be able to edit it via the Parameters window. By default, the radius of the node is 1.

Editing Physical Force

On the Physical Force tab of the Parameters window, you can adjust the following parameters of the physical force:

Edit Size Toggles the editing mode for the physical force node. When enabled, the radius of applying the physical force can be changed: each axis is highlighted with the colored circle. To change the radius along the axis, drag the corresponding circle.

Physical Mask Physical mask. The physical mask of the physical force must match the physical mask of the physical object. Otherwise, the physical force won't affect the object.
Radius Radius for applying the physical force in units.
Attenuation Attenuation factor indicating how much the physical force decreases when the objects move away from the force center.
Attractor Attraction force applied to objects in the physical force radius. If a positive value is provided, objects will be pulled away from the force point. If a negative value is provided, objects will be pulled up to the force point.
Rotator Rotation force that is applied to objects in the physical force radius. If a positive value is provided, objects will be rotated clockwise. If a negative value is provided, objects will be rotated counter-clockwise.
Last update: 2018-04-26
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