tailieunhanh - adobe flash cs5 on demand part 45

Tạo hình động với Shape Tweening Tweening hình hoạt động tương tự để tweening chuyển động. Nó sau cùng cấu trúc khung trong Timeline. Bạn có thể động nhiều trong những thay đổi tương tự như alpha, màu sắc, quy mô, và vị trí, mặc dù mục đích chính của nó là để biến đổi hình dạng của một đối tượng vào hình dạng khác. | Animating with Shape Tweening Introduction Shape tweening works similarly to motion tweening. It follows the same structure of keyframing in the Timeline. You can animate many of the same changes such as alpha color scale and position though its main purpose is to transform the shape of an object into another shape. Whereas motion tweening is applied to groups and symbols shape tweening must be applied to an editable shape. You can determine whether an object is editable by selecting it with the Selection tool if it doesn t have a bounding box when selected shape tweening can be reason for this is that when you convert a shape into a symbol you are essentially protecting it from editing by storing it in its own Timeline. To apply shape tweening to a symbol you must enter symbol editing mode and apply it to the shape contained inside the symbol. Shapes are created with any of Flash s drawing tools such as the Oval or Rectangle tools. By making changes to the shape with any of Flash s editing tools you can change the contours of the shape for example turn a circle into a square and then use shape tweening to make this change happen gradually over time. Because the results of a shape tween can be unpredictable you can set shape hints to let Flash know how to proceed with the tween. This is useful when you are working with complex shapes such as letterforms. In all cases you should only tween one shape at a time in a tweened span for best results. In addition to shape tweening you can also animate shapes using Inverse Kinematics IK which allows you to stretch and bend shape objects and link groups of symbol instances to make them move together in naturalistic ways using an internal structure of bones to create character animation. 10 What You ll Do Use Shape Tweening Create a Shape Tween Add and Remove Keyframes from a Shape Tween Change Shape Positions with Shape Tweening Change Shape Position and Form Simultaneously Adjust Shape Tween Properties Change .

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