Re: Scripting Animation Layers

[André Adam <a_adam(at)49games.de>]

Thanks, that sounds pretty much like what I experience here. I will 
package it for support, thanks again.

   -André


Brent McPherson wrote:
> Andre,
>
> I will have a more detailed look at your script when I get a chance but I believe the layer offsets are calculated from the current time. If I remember correctly it is done this way to support the "key time" functionality in XSI where you can MMB on the timeline to set a keytime which is different from the current frame. (and the problem with SaveKey is there is no way to specify that the offset should be evaluated at the key time)
>
> The best bet would be to send this in to support(at)softimage.com (so it doesn't get lost) and we can figure out whether it is a bug vs something we might need to support by using an extra flag to SaveKey.
>
> Thanks.
> --
> Brent
>
> -----Original Message-----
> From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On Behalf Of André Adam
> Sent: Monday, April 16, 2007 5:01 PM
> To: xsi(at)Softimage.COM
> Subject: Scripting Animation Layers
>
> Heya,
>
> what are people's experiences with scripting Animation Layers? I'm just 
> in the middle of designing an offset system and have to plot IK driven 
> animation on top of an FK layer.
>
> *Any* attempt to do a simple SaveKey() inside of a cycle fails 
> miserably, the plottet offsets make no sense at all. *However*, if I 
> move the timeline manually (oPlayCtrl.Parameters("Current").Value = 
> blabla) and call a Refresh() from within the cycle, it works. This must 
> be the most ugly code ever; is this a bug, really meant to work like 
> this or me not getting something? To my understanding the offset keys 
> are solved through the interface?
>
> Thanks in advance if anybody has a little bit of experience to share 
> with this new feature's internals. Oh, and a bit of repro code below...
>
> Cheers!
>
>     -André
>
>
> //1: Build and animate a skeleton:
>
> //Create Skeleton
> Create2DSkeleton(0, 0, 0, 0, 1, -3, 0, 90, 0, 4);
> AppendBone("eff", 0, 0, -6);
> //Key FK Animation
> SaveKey("bone.kine.local.rotx,bone.kine.local.roty,bone.kine.local.rotz,bone1.kine.local.rotx,bone1.kine.local.roty,bone1.kine.local.rotz", 
> 1);
> Rotate("bone", 50, 0, 0, siRelative, siGlobal, siObj, siXYZ);
> Rotate("bone1", -100, 0, 0, siRelative, siGlobal, siObj, siXYZ);
> SaveKey("bone.kine.local.rotx,bone.kine.local.roty,bone.kine.local.rotz,bone1.kine.local.rotx,bone1.kine.local.roty,bone1.kine.local.rotz", 
> 100);
> //Key Effector, overriding the FK animation
> SaveKey("eff.kine.local.posx,eff.kine.local.posy,eff.kine.local.posz", 1);
> Translate("eff", 3, -1.5, 3, siRelative, siGlobal, siObj, siXYZ);
> SaveKey("eff.kine.local.posx,eff.kine.local.posy,eff.kine.local.posz", 100);
> AddAnimationLayer("Scene_Root");
> SelectObj("bone,bone1");
>
> //2.: Trying to plot the delta between FK and IK the straight forward 
> way, does not work:
>
> function fPlotRotationOffsets(cObjs, aInOut){
>   var cKeyParams = new ActiveXObject("XSI.Collection");
>   var eObjs = new Enumerator(cObjs);
>   while(!eObjs.atEnd()){
>     cKeyParams.Add(eObjs.item().RotX);
>     cKeyParams.Add(eObjs.item().RotY);
>     cKeyParams.Add(eObjs.item().RotZ);
>     eObjs.moveNext();
>   }
>   for(var i=aInOut[0]; i<aInOut[1]+1; i++){
>     SaveKey(cKeyParams.GetAsText(), i, null, -1, -1, false);
>   }
> }
> fPlotRotationOffsets(Selection, new Array(1,100));
>
> //3.: I have to do this instead:
>
> function fPlotRotationOffsets(cObjs, aInOut){
>   var cKeyParams = new ActiveXObject("XSI.Collection");
>   var eObjs = new Enumerator(cObjs);
>   while(!eObjs.atEnd()){
>     cKeyParams.Add(eObjs.item().RotX);
>     cKeyParams.Add(eObjs.item().RotY);
>     cKeyParams.Add(eObjs.item().RotZ);
>     eObjs.moveNext();
>   }
>   var oPlayCtrl = ActiveProject.Properties.Find("PlayControl");
>   for(var i=aInOut[0]; i<aInOut[1]+1; i++){
>     oPlayCtrl.Parameters("Current").Value = i; //Bad!
>     Refresh(); //Even worse!
>     SaveKey(cKeyParams.GetAsText());
>   }
> }
> fPlotRotationOffsets(Selection, new Array(1,100))
>
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>
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