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  1. Animation

Rigid Animation

PreviousImagesNextRealtime Animation

Last updated 2 years ago

Rigid body animation is perhaps the simplest of methods for moving any thing around your stage, including Sketches, Shapes, Props, Vehicles and Characters.

To start, point at the thing you want to animate, press the Inspect button and select Start Motion from the . (This step is not needed for character puppets as they are always animated.) This will create a keyframe on the Timeline.

You can now scrub the timeline and use the to move the thing to create a new keyframe. When you scrub between those keyframes, the thing will move: it will follow a smooth spline between the points and uses speed curves to start and stop smoothly.

Build up your movement in stages: For example, place a car, then move time and place the car a second time to create a straight motion path between those two points. Then scrub the motion path to points where the car is not moving naturally, and re-orientate the car to create new keyframes in between. Alternatively, the same technique can be applied by scrubbing on the timeline.

Changing the animation behaviour

You can change how the animation behaves between keyframes, by going to the Timeline, pointing at the animation and pressing the Inspect button: then choose the Edit option in the pop-up menu.

You can now see the properties for the animation:

Path Shape

Choose between: Jump - motion jumps directly between keyframes Straight - motion moves in straight lines between keyframes Curve - motion follows a smooth curve between keyframes

Speed Profile

Choose between: Uniform - motion is at a constant speed between keyframes Smooth Start And Stop - motion is mostly uniform but starts smoothly at the first keyframe and stops smoothly at the last. Pause At Each Key - motion starts and stops at each keyframe, coming to a brief pause there.

There is also an action, Set Constant Speed, which changes the timing of the keyframes so the thing travels equal distance in equal time.

The 'advance a beat' button on the is very useful for pacing motion.

The animation will have an associated visible in the scene. If it hides away, point at the thing again to bring it back. You can use this to scrub time to where you want.

From the , you can move keyframes in time to change the speed of the animation. You can also spped up or slow down the whole animation by dragging an end handle.

Motion Path
Timeline
Grabber
Transport Controls
Inspect Menu