tailieunhanh - Adobe Flash chuyên nghiệp - p 17

You can easily create complex motion with articulations—joints between linked objects—with the feature called inverse kinematics. You can also morph—create organic changes in shapes—with shape tweens. 151 Download from Library of Wow! ebook getting Started You’ll start the lesson by viewing the animated crane and floating buoy that you’ll create as you learn about articulated motion and morphing in Flash. You’ll also be animating a tentacle of an octopus. 1 Double-click the file in the Lesson05/05End folder to play the animation. Double-click the to play that animation as well. The first project is an animation depicting a crane working at the seaside dock. | You can easily create complex motion with articulations joints between linked objects with the feature called inverse kinematics. You can also morph create organic changes in shapes with shape tweens. 151 Download from Library of Wow ebook Getting Started You ll start the lesson by viewing the animated crane and floating buoy that you ll create as you learn about articulated motion and morphing in Flash. You ll also be animating a tentacle of an octopus. 1 Double-click the file in the Lesson05 05End folder to play the animation. Double-click the to play that animation as well. The first project is an animation depicting a crane working at the seaside dock and a buoy floating along the gentle undulations of the water. In this lesson you ll animate the crane arm the buoy and the smooth motion of the waves. The other project is an animation showing an octopus curling one of its tentacles. 2 Double-click the file in the Lesson05 05Start folder to open the initial project file in Flash. 3 Choose File Save As. Name the file and save it in the 05Start folder. Saving a working copy ensures that the original start file will be available if you want to start over. 152 LESSON 5 Articulated Motion and Morphing Download from Library of Wow ebook Articulated Motion with Inverse Kinematics When you want to animate an articulated object one that has multiple joints such as a walking person or as in this example a moving crane Flash Professional CS5 makes it easy to do so with inverse kinematics. Inverse kinematics is a mathematical way to calculate the different angles of a jointed object to achieve a certain configuration. You can pose your object in a beginning keyframe and then set a different pose at a later keyframe. Flash will use inverse kinematics to figure out the different angles for all the joints to get from the first pose to the next pose. Inverse kinematics makes animating easy because you don t have to worry