Camera moves and motion paths can become quite advanced, especially with moves through 3D space. Harmony provides tools to view your camera’s path and make adjustments to it from both a 2D and 3D perspective.
You can display the trajectory of a motion path when you select an object in the Timeline or Camera view.
A motion path is easy to manipulate. One important concept to understand is that a trajectory contains both keyframes and control points. Both can be used to shape a path; each have their own significance and behaviour, however only keyframes appear in the Timeline view.
|•||Keyframes have a transformation value and a position in space at a given frame. Keyframes are locked in time.|
|•||Control points have a position but no fixed frame or timing. It is mainly used to deform a trajectory. There are no velocity handles available on a control point. The velocity segments are set between keyframes only, making curves and trajectories much smoother. Control points can only be added on a 3D path.|
You can set the default Continuity, Bias and Tension parameters in the Preferences panel.
Continuity: Controls the smoothness of a transition between the segments joined by a point.
Tension: Controls how sharply the path bends as it passes through a control point or keyframe.
Bias: Controls the slope of the path so it flows towards one side of the motion point or the other.
When you select a control point on a path, you can switch between a rounded or square corner by using the Linear/Curve command.
- Verify that the Camera view (click its tab) is selected and that the layer whose trajectory you want to display is selected in the Timeline view.
- From the top menu, select View > Show > Control or press Shift + F11.
- In the Timeline or Camera view, select the peg or layer on which you want to add a control point.
- If the selected element’s trajectory is not displayed, select View > Show > Control from the top menu or press Shift + F11.
The trajectory appears in the Camera, Top, Side and Perspective views.
- Add control points on a 3D path trajectory by placing the cursor where you want to add the point and press P once. If you hold the key down, control points will be added continuously until you release the key.
- In the Camera view, use the Transform tool select a point to convert.
- To convert the point:
|‣||From the top menu, select Animation > Lock in Time.|
|‣||In the Function view or Function Editor, select the keyframe to convert and click the Lock in Time button.|
- From the top menu, select Edit > Preferences (Windows) or Stage Advanced > Preferences (Mac OS X).
The Preferences dialog box opens.
- Select the Camera tab and adjust the parameters in the Control Points section.
- In the Timeline view, double-click the layer that contains the point you want to convert.
The Layer Properties window opens.
- On the Transformation tab, select the 3D Path option.
- In the Tools toolbar, select the Transform tool or press Shift + T.
- In the Camera view, select the point to convert.
- From the top menu, select Animation > Linear Motion.