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Mastering Autodesk Maya 2011 phần 5

Thủ thuật vào thời điểm này là tạo ra sự sắp xếp cùng một định hướng quan trọng cho chân khác theo cách dễ nhất có thể. Bạn có thể đạt được điều này sử dụng sao chép và dán. Điều quan trọng cần nhớ là để dán các phím điều khiển từ một kênh trên một đối tượng khác, | skinning geometry 391 Broken-Joint Skeletons Keep in mind that you also have the option of binding only selected joints. In some circumstances this can be quite useful. For example if you set up what is known as a broken-joint skeleton which uses additional bones outside the main skeleton hierarchy as deformers these additional joints are usually constrained to the main hierarchy using parent constraints. By using parent constraints the joints float outside the main hierarchy giving them a level of freedom of movement to create special deformation effects. Sometimes floating joints are used for facial animation instead of or in addition to blendshape deformers. When skinning a broken rig to the skeleton select the floating joints along with the joints in the main hierarchy when the smooth bind operation is performed. The following are the relevant settings Bind method The bind method determines how joints influence vertices by either following the skeleton s hierarchy or simply using whichever joint is the closest. The hierarchy of the giraffe is complete and calls for every bone to be weighted however for the tips use Closest In Hierarchy. Include method The include method dictates which vertices are included in the initial volumes. Your options are Closest Volume and Minimum Weight. Choosing Minimum Weight opens an additional option to set the length of the volume. By default this is .25 causing each volume to be 25 percent longer than the bone to which it is attached. Most characters will have a different area of influence based on its location. For instance the giraffe s knee needs to have a smaller falloff compared to the torso. Choose Closest Volume. There are two types of volumes you can use a cylinder or a capsule A cylinder will deliver a hard edge. The capsule is rounded at its ends providing a smoother falloff. Keep the capsule turned on. Skinning method The skinning method has the greatest impact on your bind. You can use Classic Linear Dual Quaternion