Look At
Result of a LookAt layout node
The LookAt node allows to rotate a given bone on the affected Entities to look at a given target.
Add node
- Drag the LookAt node icon
from the Nodes Library panel and drop it in the Layout Graph Edition panel - Hit the Tab key in the Layout Graph Edition panel and select the LookAt option in the dropdown menu that appears
LookAt node in the Layout Graph Edition panel
Node parameters
Parameters are accessible by double-clicking on the node in the Layout Graph Edition panel:
LookAt node parameters
| Name | Name of the node |
| Active | Whether the node is active or not |
| Target Position |
Position of the target to look at This parameter is keyframable, check the page explaining how to handle the keyframes in Maya |
| Target Position Noise | Amount of noise around the target position value (each entity will randomly pick a value between targetPosition - 0.5*targetPositionNoise and targetPosition + 0.5*targetPositionNoise ) |
| Target Relativ To Entity | Whether the target is relative to the entity, or an absolute position |
| Bone Name | The bone that should be rotated to look at the target |
| Weight |
How much of the rotation that is needed to look at the target will really be applied. You can use the parameter to spread the rotation on several joints by using several lookAt nodes with different weights (for instance, 0.5 weight on the neck and 1 weight on the head) This parameter is keyframable, check the page explaining how to handle the keyframes in Maya |
| Weight Frames Noise | Amount of noise on the frame values of the weight (when the weight is keyframed, each entity will randomly pick a value between -0.5*weightFramesNoise and +0.5*weightFramesNoise and add this value to each key frame) |
| Alignment Axis |
What (local) axis of the given bone needs to be aligned with the target. This depends on the base joint orientation on your character. If set to [0; 0; 0], the look at will try to automatically determine the alignement axis based on the skeleton's front axis. |
| Heading Lower Angular Limit | The lower angular limit for the heading rotation |
| Heading Upper Angular Limit | The upper angular limit for the heading rotation |
| Attitude Lower Angular Limit | The lower angular limit for the attitude rotation |
| Attitude Upper Angular Limit | The upper angular limit for the attitude rotation |