--- title: "Effector" url: "https://help.maxon.net/c4d/en-us/Content/html/OETARGET-MGTARGETEFFECTOR_GROUPEFFECTOR.html" section_path: "MoGraph > Effectors > Target > Effector" element_id: "OETARGET" group_id: "MGTARGETEFFECTOR_GROUPEFFECTOR" description: "Use this slider to adjust the strength of the Effector. A Strength setting of 0% means the Effector will have no effect." --- ## Effector ### Strength Parameter ID: `MGTARGETEFFECTOR_STRENGTH` · Range: [-∞..+∞%] Use this slider to adjust the strength of the Effector. A **Strength** setting of 0% means the Effector will have no effect. ### Selection Parameter ID: `MGTARGETEFFECTOR_SELECTION` ![Image: 018406.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/018406.jpg)\ On the left, a Step effector is shown without selection; on the right, it is shown with a selection applied. A Step effector was chosen here as an example of selection; otherwise, selections work differently depending on the type of effector. A [MoGraph Selection](https://help.maxon.net/c4d/en-us/Content/html/TMGSELECTION.html.md) or [MoGraph Weightmap](https://help.maxon.net/c4d/en-us/Content/html/TMGWEIGHT.html.md) tag can be dragged into this field or placed automatically by selecting a Cloner object and an existing MoGraph selection/weighting, and creating an Effector. The Effector will then work as follows, depending on the tag’s settings: - **MoGraph Selection** tag: Will only affect the clones belonging to the selection. - **MoGraph Weightmap** tag: The clone weighting (values between 0% and 100%) saved in the tag will be multiplied with the effector strength. ### Target Mode Parameter ID: `MGTARGETEFFECTOR_MODE` Depending on the option selected, the clones will orient themselves according to: Field Direction ![Image: 041710.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/041710.jpg)\ A Linear Field in the Target Effector on the left, on the right a Spherical Field. The directions always run from maximum to minimum. The Field functionality consists of 3 channels: Value, Color and Direction. Fields can affect these three properties, whereby the direction plays the smallest role because it's supported by so few elements. These are primarily the Target Effector and, for example, the Falloff Node and Python Fields). Fields can directly define a direction (or a vector). For the common Shape Fields such as Linear or Spherical Fields, this direction always runs from maximum to minimum effect, i.e., for a Linear Field, the same direction will result and for a Spherical Field it runs from the center outwards. Fields that are used in conjunction with a direction functionality will be displayed with a Direction tab where custom directions can be defined. Clones will align themselves to their Z axis by default. Interesting effects can be achieved in combination with a Spline layer, for example: ![Image: 041711.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/041711.jpg)\ Spline object layer in a Target Effector: left in **Distance Mode** Along, right Radius. Other interesting Field effects with regard to the Direction channel: - Noise Fields, that work according to their effect distribution (always in the direction of the weaker effect) - Particles whose direction of flight is used - Point object that assigns directions to object points or surfaces - Constants for which you can define a custom direction ### Loop Parameter ID: `MGTARGETEFFECTOR_LOOP` This option becomes available if **Target Mode** is set to *Next Node* or *Previous Node*. This setting determines whether the last clone should align with the first (Clone 0) or the first with the last clone. By the way, you can display the clone numbers in the view by going to the “Transform” tab in the object that generates the clones and choose **Display** *Index*. ### Set Weight Parameter ID: `MGTARGETEFFECTOR_SETWEIGHT` Enabling this option will set the directional vector length as a MoGraph weight value (see also [MoGraph Color Layer](https://help.maxon.net/c4d/en-us/Content/html/FLMOGRAPH.html.md)). Other Effectors/Field lists can use this weight value (if the clone-generating object is placed into the list). ![Image: 041712.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/041712.jpg)\ At left **Set Weight** is disabled and all arrows have the same length; at right the option is enabled and creates a fitting scaling. [![Image: halvar.png](https://help.maxon.net/c4d/en-us/Content/Resources/Images/halvar.png)](https://help.maxon.net/c4d/en-us/Content/Resources/Scenes/041713.c4d) Here arrows orient themselves to the nearest object point. **Set Weight** ensures that a separate Effector (the Plain Effector with the name Plain) scales the arrows’ lengths. Object Target The clones will be oriented themselves with their Z axis in the direction of the **Object Target**. The **Object Target** is defined by dragging the desired object into the **Target Object** field. If this field is left blank, the Target Effector itself will be used. Look At Camera The clones will always orient themselves with their Z axis in the direction of the camera in the 3D view. Next Node Previous Node Each clone will orient itself with its Z axis according to the previous or next clone. In the example below, a torus was used to demonstrate: ![Image: 006202.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/006202.jpg)\ Each clone orients itself according to the previous or next clone. ### Target Object Parameter ID: `MGTARGETEFFECTOR_OBJECT` See target mode **Target Object**. ### Use Pitch Parameter ID: `MGTARGETEFFECTOR_PITCH` If this setting is activated, a clone's Z axis will always point to the **Object Target**; if this setting is not active, the rotation's pitch direction will remain unchanged. An up vector can also be set. ### Reverse Heading Parameter ID: `MGTARGETEFFECTOR_REVERSEVECTOR` Instead of the positive Z axis, the negative Z axis will attempt to orient itself to the target. ### Up Vector Parameter ID: `MGTARGETEFFECTOR_PRIMITIVEAXIS` ![Image: 006203.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/006203.jpg)\ Clockwise from top left: **Use Pitch** deactivated; **Use Pitch** active; additionally, **Up Vector** set to **Object**; additionally **Target Mode** set to **Look at Camera**. As soon as **Use Pitch** is activated, the clones will point with their Z axis exactly in the direction of the position defined in **Target Mode** (in as far as **Reverse Heading** is not active). The rotation of the clones, though, is herewith still not set entirely. One of several pre-defined vectors or **Object** can be selected from the **Up Vector** menu in whose direction the clones should be oriented with their X axis (in as far as the **locked** Z axis permits). ### Object Parameter ID: `MGTARGETEFFECTOR_UP` See **Up Vector**. ### Repel Parameter ID: `MGTARGETEFFECTOR_REACT` ![Image: 006204.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/006204.jpg)\ Clones can be pushed away from a target object (here red) by activating the **Repel** setting. **Distance Strength** here has been set to 100%. The following sliders appear when **Repel** is activated: ### Distance Parameter ID: `MGTARGETEFFECTOR_RANGE` · Range: [0..+∞m] Defines the minimum distance the clones must have from the target object (or an Effector in other modes) before being displaced. ### Distance Strength Parameter ID: `ETARG_RANGE_STRENGTH` · Range: [-∞..+∞%] Use this slider to adjust the strength of the repulsion.