someday - ERC Tricks - ( post includes code for nerds )

mCasual

i must return to the midi animation project

so this wont be available right now

but

sometimes i animate Amy's head using mcjKeepOrient
this keeps her had still while the rest of the body moves, a walk or a dance
this means there's 1 keyframe per animation frame imposed on the head node

but during the walk i'd like her attention to turn to the camera or the road or things

so how do i mix the two ?

by adding a second head joint

using an ERC Link and a gizmo

the gizmo's rotations are added to the head rotations

in the gif below, the gizmo animation is a slow Bend/Unbend

and Amy's initial head animation is a fast head bobbing

if you know daz script programming, here's the script i used

you can also see i did a quick rigging of the Mitsu hair

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another advantage of this system is that i could reserve the head node for morph/lipsync keyframes
and have all the head rotation keyframes on the gizmo
it would be easier on the DS Timeline to keep track of what's going on

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note the precise sinewave animation curves were created using mcjCycleFilter
https://www.youtube.com/watch?v=4rcAHyf0lxs
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// DAZ Studio version 3.0  filetype DAZ Script
 //uninstall()
 install1()
 //install2()
function install1()
{
 var masterNode = Scene.findNodeByLabel( "mcjGizmo3" );
 var slaveNode = Scene.findNodeByLabel( "Amy" ).findBone("head");
 var slaveProp = slaveNode.getXRotControl();
 var masterProp = masterNode.getXRotControl();
 var oERCLink = new DzERCLink( masterProp );
 slaveProp.insertController( oERCLink );
}
function install2()
{
 var masterNode = Scene.findNodeByLabel( "Amy" ).findBone("head");
 var masterProp = masterNode.getXRotControl();

 var slaveNode = Scene.findNodeByLabel( "AmyHair" );
 var slaveProp = slaveNode.getObject().findModifier( "NeckFwd2" ).getValueChannel();
 debug( slaveProp.getLabel() ) 
 var oERCLink = new DzERCLink( masterProp );
 slaveProp.insertController( oERCLink );
}


function uninstall()
{
 var slaveNode = Scene.findNodeByLabel( "Amy" ).findBone("head");
 var slaveProp = slaveNode.getXRotControl();
 var ctls = slaveProp.getControllerList();
 if( ctls.length > 0 )
 {
  if( ctls[0].getCurrentProperty().getOwner().name == "mcjGizmo3" );
  {
   slaveProp.removeController( ctls[0] )
  }
 }
}