Digital Guyana

Week 0 – Flash Animation Course Day 3

Posted on: August 20, 2009

Day 3 Morning – MovieClips and Tweens

The first part of the morning was spent showing the class the two major tweens used in flash before CS4: Motion and shape. Tweens are a kind of shortcut for animation in flash. You put the object you want to animate in a position at the first and last frames you want to animate and flash does the rest of the work.

The students learned that a shape tween can only be applied to the area between two keyframes on a layer without symbols in them. Similarly, they learned that motion tweens can only occur between two keyframes on a layer that have only one instance of the same symbol in that frame.

The second part of the morning introduced the students to MovieClips. MovieClips are a type of symbol that instead of being a static graphic can be a looping animation. I showed the students how to put their lip-synched animations into a MovieClip and then animate that MovieClip using a tween.

Day 3 afternoon – Walk Cycles, Motion Guides and exporting to Quick Time

After instroducing looped animation using MovieClips I continued to show the class what a walk cycle was. A walk cycle is a looped animation showing a character walking. Making a walk cycle and then animation the movieclip with a motion tween is a great shortcut to get characters moving quickly and effectively.

We started off with a very simple walk cycle for a stick man – each arm and leg was a symbol, then each one was put on a seperate layer and animated using tweens in order to give the feel of a walk (even if it was very stiff and stilted). After they each had a simple walk cycle I got the students to break the arm and leg symbols up into forearm, arm, thigh and shin, so that the character would have working knees and elbows. I then got them to analyze somebody walking in order to find the best way to make the walk look realistic.

A lot of students at this point took the opportunity to use their lip-synched face animation as the head for their stick man. I commend their creativity.

Once everyone had a walk cycle completed, I showed the students motion guides. Motion guides are a line that can be paired with a layer in order to manipulate the path a tween follows – so that you can create a more diverse movement than just a straight line.

Finally, I taught the students the procedure for exporting an animation to the Quick Time .mov file format for use in video

The final part of the afternoon session was setting a quick one-day project for the students to consolidate the skills that they had picked up. Details to be posted in the day four post.

Day four will be posted up shortly.

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