Flash glossary: Ease curve
When applying eases in the Motion Editor, Adobe Flash Professional adds an ease curve to the list of eases available to the selected tween and then applies the ease to the selected properties. After an ease is applied to a property, a dashed-line curve is displayed in the graph area of the property. The dashed-line curve graphically shows the effect of the ease curve on the actual values of that property of the tween.
Click the Add button in the Ease section of the Motion Editor to add an ease to the list of eases available to the selected tween, and then select the ease to add to each property.
To remove an ease from the list of available tweens, click the Remove Ease button in the Eases section of the Motion Editor and then select the ease from the menu.
In the Motion Editor, you can edit the properties of the preset ease curves to make your own custom ease curves. Set the value for the ease in the field next to the ease name. Positive values increase the ease at the end of the curve, while negative values increase the ease at the beginning of the curve.
In the screenshot below, the ease curve of the Stop and Start ease is much more dramatic than the ease curve of the Simple ease displayed above it:
To edit a custom ease curve, add an instance of the Custom ease curve to the list of eases and then edit the curve using the same techniques used to edit any other Bezier curve in Flash. The initial value of the ease curve must always be 0%.
You can also copy and paste the ease curve from one custom ease to another. To learn more, see Easing tweens in the Flash documentation.
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