TAILIEUCHUNG - Adobe Flash chuyên nghiệp - p 18

editing Armatures You can easily edit the armature by repositioning the nodes or by deleting and adding new bones. If one of the nodes of your armature is slightly off, for example, you can use the Free Transform tool to rotate it or move it into a new position. This does not change the bones, however. You can also move nodes into new positions by holding down the Alt/Option key while dragging the node to a different location. If you want to remove bones, simply click on the bone that you want to delete and press the Delete key on the. | Editing Armatures You can easily edit the armature by repositioning the nodes or by deleting and adding new bones. If one of the nodes of your armature is slightly off for example you can use the Free Transform tool to rotate it or move it into a new position. This does not change the bones however. You can also move nodes into new positions by holding down the Alt Option key while dragging the node to a different location. If you want to remove bones simply click on the bone that you want to delete and press the Delete key on the keyboard. The selected bone and all the bones connected to it down the chain will be removed. You can then add new bones if desired. Constraining Joints The various joints of the crane can freely rotate which isn t particularly realistic. Many armatures in real life are constrained to certain angles of rotation. For example your forearm can rotate up toward your bicep but it can t rotate in the other direction beyond your bicep. When working with armatures in Flash Professional CS5 you can choose to constrain the rotation for various joints or even constrain the translation movement of the various joints. Next you ll constrain the rotation and translation of the various joints of the crane so they move more realistically. Constraining the rotation of joints By default the rotation of joints have no constraints which means they can rotate in a full circle or 360 degrees. If you only want a certain joint to rotate in a quarter circle arc you would constrain the joint to 90 degrees. 1 Click the second pose at frame 50 in the cranearmature layer right-click Ctrl-click and select Clear Pose. ADOBE FLASH PROFESSIONAL CS5 CLASSROOM IN A BOOK 161 Download from Library of Wow ebook 2 Click the third pose at frame 100 in the cranearmature layer right-click Ctrl-click and select Clear Pose. Your armature now has only a single pose at frame 1. 3 Move the red playhead to frame 1. 4 Choose the Selection tool. 5 Click on the second bone in the crane .

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