The drag force item applies a counter force to the object's current linear and rotational velocities. This is useful in slowing object motions, like dragging it through molasses. The higher the value, the stronger the drag applied to the dynamic objects.
You can add a drag force item to a simulation by selecting Forces > Drag in the Layout interface's toolbox. Alternatively, in the Items list, click Add Item > Forces > Drag Force. Any force added after a dynamic body auto-connects to the solver item, forces added beforehand need to be connected manually in the Schematic view.
Remove force items the same way as any other item: simply select the item and press Delete on the keyboard.
When selected, the following attributes appear in the Properties viewport.
|
Option |
Description |
|---|---|
|
Name |
Displays the current force item name. To change it, click on the field and type in the new name. |
|
Transform |
|
|
Position X/Y/Z |
Defines the locator position for the drag force item. By default, the drag force item affects dynamic objects globally, so position of the item in the scene is irrelevant to its effect. |
|
Rotation X/Y/Z |
The drag force item globally affects dynamic items regardless of its rotation, therefore these values are not applicable to it. |
|
Scale X/Y/Z |
The drag force item globally affects dynamic items regardless of its scale, therefore these values are not applicable to it. To adjust the amount of force attenuation, modify the Strength value. |
|
Drag Force |
|
|
Enable |
Toggles the force item on or off. When enabled, the force item is considered during a dynamics simulation; when disabled, the force item is ignored. However, disabled forces are persistent across Modo sessions, being saved with the scene, and retain their present settings. |
|
Invert |
Reverses the drag effect on dynamic items. |
|
Strength |
Acts as a multiplier on an object's motion. The higher the value, the greater the strength of the drag. Positive values slow dynamic items down, and negative ones impel them to move faster. |
|
Torque |
Acts as a multiplier on rotational movements of dynamic items. The higher the value, the greater the strength of the drag. |