2009

Conceptually, keyframes represent relative translations, rotations and scaling operations from the
previous keyframe or, in the case of the first keyframe, the model’s starting position. Keyframes are
relative to each other and to the model’s starting position. This means that if an object is moved in the
scene (when, for example, a new version of the model is opened, or if movement tools are used in
NavisWorks) the animation will be done relative to the new starting location rather the animation’s original
start position.
The translation, scaling and rotation operations are cumulative. This means if a particular object is in two
animation sets at the same time, both sets of operations are carried out. So if both are translating across
the X axis, for example, the object will move twice as far.
If there is no keyframe at the start of the timeline for an animation set, camera, or section plane set, then
the very start of the timeline acts like a hidden keyframe. So, for example, if you have a keyframe a few
seconds in, and the frame has the Interpolate option enabled, then over those first few seconds objects
would interpolate between their default starting position and those defined in the first keyframe.
Editing Keyframes
To edit a keyframe, you need to right-click it in the timeline view, and select the Edit option on the
shortcut menu. The procedures for editing keyframes for animation sets, cameras, and section planes
follow.
Editing Animation Sets
To edit a keyframe for an animation set:
1. If the Animator window is not already open, select Tools > Animator from the menu bar.
2. Right-click the desired keyframe in the timeline view, and select Edit on the shortcut menu.
3. Use the Edit Key Frame dialog box to adjust the animation.
Creating Animations
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