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Synthesis DialogOpen Track View > Global Tracks > Block Control > GlobalClip Properties > Synthesis dialog
Select a Crowd object. > Modify panel > Global Clip Controllers rollout > New > Choose a GlobalClip object. > Select the object in the list. > Edit > Synthesis dialog
The Synthesis dialog has three tabs to split up the workflow. On the Motion Clips tab you specify which object is the global object that contains all the animation; you also setup clips derived from the global object here. Controls on the State tab allow you to link clips to a state, if the bird is accelerating use a fast flap clip for example. Controls on the Synthesis tab allow you to select the objects to synthesize and then synthesize the motion for all of them.
See also
Procedure
Usage of the Synthesis dialog is closely associated with usage of the ClipState dialog. For a procedure that combines both, see To_use_the_Synthesis_and_ClipState_dialogs.
Interface
Motion Clips tab
Global Object: Click Global Object and pick the object that contains the animation (all the clips) in the Select Global Objects to Copy dialog.
Global Motion Clips group
List Window: The list of motion clips.
The clips that you create appear in this list.
Edit Window: Rename or change the color for the selected motion clip.
From Global Object group
Create State: Create a new state with parameters specific to the motion clip like speed, heading, acceleration and so on.
The software evaluates the motion and orientation of the object and creates a new state with parameters set accordingly.
Remove Local X, Y, Z, Orientation: Turn options on to strip out transformation or orientation data from the motion clip.
The idea is to animate the global object with full lateral motion. The software then creates states based on the actual motion of the global object. After the states are created the animation is stripped from the object. When delegates linked to clones of the global object come close to the actual motion recorded in the state then the appropriate state is used to trigger the motion clip.
This technique is used to minimize sliding feet. If you animate a creature with many legs you should animate lateral motion as well a leg motion. Then you create clips that record and then strip out the lateral motion that you created. When the delegate approaches the speed and direction you created originally on the global object then the leg motion clip will be activated by the state; leg motion will be accurate relative to speed preventing "sliding feet".
New: Lets you setup a new clip. Displays the MotionClip Parameters dialog where you can specify the name and duration of the clip.
This selects all active controllers.
Modify: Lets you modify a clip in the list. Displays the MotionClip Parameters dialog where you can specify the name and duration of the clip
Copy to Object: The selected motionclip keys will be copied back to the GlobalObject. Deletes the animation keys that are there already.
This allows you to edit a motion clip. Select a motionclip, click CopyToObject, change it on the global object, and then click Modify and this will replace the global object animation. The change will affect all the objects being synthesized.
From Track View group
New: Lets you setup a new clip. Specify a track in the Track View Pick dialog.
The MotionClip Parameters dialog displays upon exiting the Track View Pick dialog.
Modify: Lets you modify a clip in the list. Specify a track in the Track View Pick dialog.
The MotionClip Parameters dialog displays upon exiting the Track View Pick dialog.
Add Selected: Creates a motion clip from only the selected tracks in track view.
Delete: Deletes a clip. Select a clip and click Delete.
Load: Loads a motionclip file (.clp). Displays the Load Motion Clip dialog.
Save: Saves a motionclip into a .clp file. Displays the Save Motion Clip dialog.
State Tab
Create and define states to determine how the synthesis will occur.
State Drop Down List: Displays the current state. Select a state to modify. You can change the state name by editing the text in the window.
New State: Displays the ClipState dialog. Creates a new state.
Choose clip state parameters in the ClipState dialog.
Delete State: Deletes the selected state.
Edit Properties: Lets you modify the current state. Displays the ClipState dialog for the selected state.
Clear Properties: Modifies the state back to its default and removes clips from the clip window.
MotionClips Window: Displays clips for the current state. Use Add to select which clip or clips should be associated with the current state. If more than one clip is displayed, then the clips are picked randomly during synthesis.
MotionClip Weight: Increases the random probability that a clip will be chosen. Range 0-1000.
A higher weight means that a clip will have a better chance of randomly being chosen.
Add Clip: Displays the Select MotionClip dialog. Select a clip and click OK to add a clip to the current state.
If there is more than one motionclip for a state, the state will randomly select which one to use. The user can influence this random selection by modifying the Weight parameter.
Remove Clip: Removes the selected clip from the current state.
Precedence: Sets the precedence for the selected state. Range 0-1000.
If more than one state is active, the one with the higher precedence is played first. If more than one state has the same precedence, then the one with the greater weight is played first.
Weight: Specifies a weight value for a state.
If two states have the same precedence, the state with a greater weight will be considered more heavily during random selection.
Animation Start Percent: Specifies how far into the animation you want it to have played when the state is active.
For the default value of 0 the animation will start once the state is active. If the value is 100 the animation will be done playing once the state becomes active. You can also randomly modify where the animation starts by specifying a nonzero Animation Start Deviation value.
Animation Start Deviation: Randomly modifies where the animation starts by specifying a nonzero Animation Start Deviation value. Range 0.0-1.0.
State Active Percent: Specifies the percentage of time the state needs to be valid over its interval in order for it to be selected. Range 0-100, Default=50.
Clip Select Seed: Changes how the random selections occur.
If the value stays the same, you are guaranteed to get the same random selections for that state.
Synthesis tab
Controls in the Synthesis tab are for adding objects to be synthesized, selecting blend transition points and performing the synthesis.
New Master Motion Clip: Displays the Select Objects to Copy dialog. Lets you select objects onto which the motion will be copied to.
Remove Animation: Strip the animation from the clones.
After making clones of the original animated object you can strip the animation from the clones. During synthesis motion is applied based on which state is active.
Collapse Selected: Collapses keys on selected objects.
Keys are collapsed to the objects in the scene. This deletes the MasterMotionClip for that object. You can then edit keys and make changes to the animation manually in the scene.
Synthesize Selected: Creates keys for the selected objects.
Select All: Selects all of the objects in the list.
Synthesize All: Synthesizes the motion for all the objects. Depending on the active state appropriate motion is applied to the clones of the original object.
A progress bar displays during synthesis.
State Select Seed: Set a seed for random state selection.
During synthesis more that one state may become active at the same time, in which case one state is randomly chosen. The seed is used to modify the random value selected when determining which state to select.
Synthesis Blend Parameters group
Blending between clips can be either user specified or algorithmic. Drop down lists are used to specify a current clip and the next clip to be blended to. You can specify, in frames, when the next clip should be blended. Or you can toggle Auto Blend All to have the system determine the best blend point.
From Clip List: Lets you select the From clip.
To Clip List: Lets you select the To clip.
Blend Start: Sets the frame to start a transition manually.
Auto Blend: Creates automatic transitions between current clips.
Auto Blend All: Creates automatic transitions between all clips.
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