Tweening objects
Tweening lets you animate objects in a movie. You change their position and appearance at specific frames in their life spans, and Corel R.A.VE. creates the frames in between.
Before you can tween an object, you must increase its life span so that it exists for more than one frame. For more information, see "Increasing the life span of objects" on page 330.
How tweening works
To tween a static object, you can turn the end frame of the object's timeline into a keyframe. The start frame of the object's timeline automatically becomes another keyframe that stores information about the object's original state. Modifying the object at the end keyframe produces an animated object that changes gradually from its original state to its modified state. The rate of change is determined by the number of intermediate frames, and by the frame rate of the movie. For more information about frame rate, see "Setting the properties of movies" on page 326.
You can also tween a static object by turning any intermediate frame in its timeline into a keyframe, and then modifying the object at that keyframe. The start and end frames automatically become keyframes with the object in its original state. This produces an animated object that changes from its original state to its modified state and then back to its original state.
Frames with an interior border indicate keyframes. Turning the end frame in an object's timeline into a keyframe and modifying the object at that keyframe produces an animated object that changes over time (top). Turning an intermediate frame in an object's timeline into a keyframe and modifying the object at that keyframe produces an animated object that changes over time and returns to its original state (bottom).
What can be tweened
Corel R.A.VE. lets you tween object properties such as size, position, rotation angle, and outline, as well as interactive effects you've applied, such as contour, transparency, fill, envelope, distortion, and drop shadow. You can tween several object properties and effects at the same time.
You can tween the size, position, and rotation angle of an object simultaneously to make it roll across the stage as it recedes. Frames with an interior border indicate keyframes.
Changing the fill of a silhouette and its background at an end keyframe produces an image that gradually changes color. In this movie, the sun is also tweened to move along a path.
Tweening a distortion effect applied to an object produces an animated object that changes its shape. Frames with an interior border indicate keyframes.
- Tweening the drop shadow of this object produces the effect of a light moving over it. Frames with an interior border indicate keyframes.
Not all attributes of object properties and interactive effects can be tweened. For more information, see, "Tweening limitations" in the Help.
Creating motion
Corel R.A.VE. lets you create interesting motion effects by tweening the position, size, skew, and rotation angle of an object.
Tweening the position of an object makes an object move across the stage. You can make an object move in a straight line or make it follow a path. For information about creating paths, see "Drawing lines" in the Help.
When you tween the size, or scale, of an object, the object appears to be moving closer or receding. When you tween the skew of an object, you add depth to the object over time, and the object appears to rotate. You can rotate an object or an extruded object over time by tweening the rotation angle. Tweening the rotation angle of an object makes the object move around its center of rotation. When you tween the rotation angle of an extruded object, you can rotate the object around its x, y, or z axis. For both objects and extruded objects, you can set the rotation direction and number of rotations.
For information about changing these object properties, see "Working with objects" in the Help.
To tween an object
1 Select an object.
If the object appears in one frame only, drag the black dot associated with the object to increase its life span.
2 In the Timeline docker, click the end frame or an intermediate frame in the object's timeline.
3 Click Movie ► Insert keyframe.
4 Modify the object on the stage by editing any of its properties or by applying interactive effects.
To Tween the
Fade an object in and out Transparency
Change an object's color and pattern Color and fill
Change an object's shape Envelope effects, distortion effects, and extrusion
Move a light over an object Drop shadow, transparency, and extrusion lighting
Make an object glow Fill and drop shadow
Add a third dimension to an object Extrusion
You can only tween objects that have a life span greater than one frame. For information about increasing the life span of objects, see "Increasing the life span of objects" on page 330.
You can also change a frame to a keyframe by double-clicking it.
You can modify how quickly or slowly a tweened object changes by adjusting object and color acceleration. For more information, see "To adjust object and color acceleration" on page 341.
To move an object in a straight line
1 Select an object.
2 In the Timeline docker, click a frame other than the start frame in the object's timeline.
3 Click Movie ► Insert keyframe.
4 Drag the object to a new position on the stage.
You can move an object in a perfectly horizontal or vertical line by holding down Ctrl and dragging the object.
To move an object along a path
1 Select an object.
2 In the Timeline docker, click a frame other than the start frame in the object's timeline.
3 Click Movie ► Insert keyframe.
4 Drag the object to a new position on the stage.
5 Draw a path.
6 In the Timeline docker, drag the black dot associated with the path to the start frame of the object's timeline.
7 Click the Pick tool, and select the object on the stage.
8 Click Movie ► Tween ► Attach to path. The pointer changes to a curved arrow.
9 Click the path.
You can also attach an object to a path by clicking the Attach to path button 2. on the property bar.
You can attach more than one object to the same path.
You can also
Have an object move along the entire path Click an intermediate frame in the object's
timeline to display tween controls on the property bar, and click the Sets the tween to occur along full path button
Have an object rotate along a path
Click an intermediate frame in the object's timeline to display tween controls on the property bar, and click the Rotate all objects relative to the path button .
- Tweening the object's position (top) and attaching the object to a path produces an animated object that moves along a specified path (bottom). Frames with an interior border indicate keyframes.
To scale an object over time
1 Select an object.
2 In the Timeline docker, click a frame other than the start frame in the object's timeline.
3 Click Movie ► Insert keyframe.
4 Type values in the Scale factor boxes on the property bar.
^ You can also scale an object by dragging any corner selection handle.
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From here | |
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For more information about |
In the Help index, see... |
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Repeating animated objects |
animation, repeating |
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Animating blends |
blends, animating |
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Creating animation sequences from groups |
animation, creating from groups |
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