Motion Clip

A Motion Clip is a node containing a motion file (.gmo) which can be played in a Motion Behavior or a Locomotion Behavior. The Motion Clip provides information about the contained motion file (duration, framerate, velocity...) and tools to edit it in a non-destructive way.

Creation

  • CrowdMenu: Crowd Behaviors / Motion Clip Nodes
  • MEL command: glmMotionClipCmd;

Notice that most of the time it is useless to create a Motion Clip manually as both the Motion Behavior and the Locomotion Behavior provide an interface to handle Motion Clips.

Preview

A Motion Clip can be previewed in the Motion Clip Preview tool.

Configuration

Motion File Attributes

Motion Clip Id Unique id of the Motion Clip
Motion File Motion file (.gmo) to play and/or edit
Force Flat Ground This attribute tells Golaem that the animation was done on a flat ground, and allows the engine to do some optimizations knowing that. Disable this for animations that are going up or down (like climbing stairs, ...)

Notice that the following attributes are not editable and filled only when a motion file is loaded:

Number Of Frames Number of frames of the motion file
Frame Rate Framerate of the motion file. Thus, Motion Duration equals Number Of Frames * 1 / FrameRate
Root Translation Total root translation (difference of position between the first posture and the last posture) of the motion file
Velocity Velocity of the motion (equals to Root Translation / Motion Duration)
Root Rotation Total root rotation (difference of orientation between the first posture and the last posture) of the motion file (heading / attitude / bank)
Rotation Velocity Rotation velocity of the motion (equals to Root Rotation / Motion Duration)
Heading Direction Direction in which the motion is heading (most of the time it corresponds to the motion Velocity except for motions like strafes)
Preview Preview the Motion Clip in the Motion Clip Preview

Locomotion Attributes

Locomotion Channel Define an id in order to regroup several Motion Clips under the same Locomotion Channel. This attribute defines a panel of motions with the same properties (linear velocity and angular velocity), the Locomotion Behavior will pick a random motion in this set. -1 is the default value which means the Motion Clip does not belong to any set yet.

Crop Attributes

Crop Motion If checked, the following attributes will be applied to the loaded motion
Crop Start Frame First frame of the crop interval
Crop Stop Frame Last frame of the crop interval
Notice that the attributes above are non-destructive (ie they do not alter the original motion file).

Edit Attributes

Edit Motion If checked, the following attributes will be applied to the loaded motion
Edit Frame Rate New frame rate of the motion file
Edit Root Translation New total root translation (difference of position between the first posture and the last posture) of the motion file
Edit Root Rotation New total root rotation (difference of orientation between the first posture and the last posture) of the motion file
First value is the heading part, followed by the attitude and bank.
Edit Heading Direction New heading direction of the motion file
Notice that the attributes above are non-destructive (ie they do not alter the original motion file).

Miscellaneous Attributes

Auto Rename If checked, the Motion Clip node will be automatically renamed with the name of the motion file, each time it is changed