Posted: Jun 01, 2007
Published by: the area
Software: Autodesk MotionBuilder
This tutorial guides you through the process of mapping an Actor to a character. When you complete this process, your character will move according to the motion data that was previously defined in the Mapping list.
In this step, you will add a favorite path for the tutorial folder in the Asset browser window. As a result, you will be able to access the tutorial files directly from the interface.
3. In the Open directory dialog box that appears, choose the BodyA2C folder (created when unzipping the T53_Body_Actor_Char.zip file) and click OK. The BodyA2C folder is added as a favorite path in the Asset browser (fig 53-2, A).
4. Expand the BodyA2C folder in the Asset browser, drag the file actor.fbx (fig 53-3, A) into the Viewer window, and select FBX Open>All Takes from the contextual menu that appears.
An Actor attached to light blue markers appears in the Viewer window (fig 53-3, B). It is the optical motion data in these markers that drive the Actor.
6. Drag the char.fbx file into the Viewer window, and select FBX Merge>No Animation from the contextual menu that appears.
In this step, you will snap Surfer to the optical markers defined in the Mapping list by mapping the Actor to the character. You can make further adjustments using various Character settings.
2. From the Input Type menu, select Actor Input (fig 53-7, A), then select GymMan from the Input Source menu (fig 53-7, B) if it is not automatically selected.
3. Click the Active option (fig 53-8, A) if it is not already activated to activate and snap Surfer onto the Actor source (fig 53-8, B).
4. In the Transport Controls window, select OpticalMove as the current take (fig 53-9, A).
5. Play the take (Ctrl-Spacebar). The Actor and character move together using the same motion.
In this step, you will make certain adjustments to your character using the Character settings.
The Actor is hidden in the Viewer window, letting you see your character more clearly (fig 53-11).
3. Go to the beginning of the OpticalMove take (Ctrl-Home).
4. In the Character settings, expand Retargeting>Actor>Motion Reduction and select the Shoulder Reduction setting (fig 53-13).
5. Drag the Shoulder Reduction slider to 80 and observe the more natural appearance of Surfer's shoulders (fig 53-14).
6. Jog (J-drag) between frames 162 and 166, and observe how Surfer's neck juts out unnaturally at frames 165 and 166. You can adjust this movement using the Neck Reduction setting.
7. Select Neck Reduction in the Character Settings, and change the value to 80. Observe the effect on the neck (fig 53-16).
8. Play the take (Ctrl-Spacebar).
During this tutorial, you linked your character to an Actor with motion data. As a result, the motion data from your Actor drives your character. You can further adjust your character to its source using the options in the Character settings.
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