Custom import options

The area beneath the Create and Merge options displays additional options that are available depending on the file format that you are importing. This topic lists the more commonly used file formats and their options.

Acclaim (*.asf and *.amc)

The Acclaim format is a dual file format where the .asf file contains a definition of the skeleton and the .amc file contains the motion data used by the skeleton. It is possible to have multiple .amc files for a single .asf file.

When importing any Acclaim file format files, you can select only one .asf file and zero or more .amc files. If you choose to select no .amc files, a dialog box warns you that you are loading a skeleton with no data. If you continue, a skeleton structure is imported without animation.

When importing this file format, three additional import options appear:

• Create a Reference Node
• Import Base rotation as Pre Rotation
• Import Base translation as Rotation pivot offsets

Acclaim ASF and AMC file import and export support the following:

• Base rotation is imported as Pre-Rotation, and Pre-Rotation is exported as Base Rotation.
• Base translation is imported as Rotation Offset and Rotation offset is exported as Base Translation.
• Rotation order

Note: If you do not activate the Base Translation on Rotation Offset option, no translation limits are applied to the file export. If you do not activate the Base Rotation on Pre Rotation, no rotation limits are applied to the file export. This is because limits are applied to the original animation data. When these options are disabled, the animation is resampled and the original limits are lost. See Acclaim .asf and .amc file format limitations.

Autodesk (*.fbx)

The Autodesk .fbx file format, in this context, refers to an .fbx animation file format. An .fbx animation file format contains only skeleton-based animation that are commonly created for the Animation Trigger window. See Animation Trigger window.

When importing .fbx animation files, the Import table contains only the start and end columns.

Motion Analysis (*.htr)

The Motion Analysis .htr file format stands for Hierarchical Transformation Rotation. It is a hierarchical skeleton data format captured using Motion Analysis capture hardware.

When importing this file format, an additional import option (Create Reference Node) lets you create a reference node when importing your .bvh or .htr skeleton.

Note: If a green property appears on an imported bone, it represents the Bone Length Data (HTR_BoneLength).

Biovision (*.bvh)

The Biovision file format is a file format for hierarchical or skeletal-based data. When importing this format, an additional import option (Create Reference Node) lets you create a reference node when importing your .bvh or .htr skeleton.

Motion Analysis (*.trc)

The Motion Analysis .trc file format is an optical capture file format. When importing this file format, an additional option lets you import data as optical segments.

Vicon (*.c3d)

The Vicon .c3d file format is an optical data file format captured using Vicon capture hardware. The following import option are specific to the import of .c3D files:

Create Optical Segments

Lets you import data as optical segments.

Keep Actor Prefix

Lets yoiu retain the Actor prefix when naming each optical marker

Up Axis used in file

Lets you pick the up axis to use for the C3D file (Y-axis or Z-axis).

Note: You must choose the axis on import; axis information is not stored in the file.