[Closed] Hair2Splines

haven’t run it – but aren’t you missing an updateShape?

I create two splines. After execute this lines:

animateVertex $[1] #all
 animateVertex $[2] #all
 $[1].Spline_1___Vertex_3 = $[2].Spline_1___Vertex_3 

Vertex 3 does change its position.

But when I use it in loop:

for s = 1 to (numSplines $[1]) do
 			   (
 				   for k = 1 to (numKnots $[1] s) do
 				(
 					   $[1].Spline_(s)___Vertex_(k) = $[2].Spline_(s)___Vertex_(k)
 				)
 			 )

It gives me an error. “__Vertex: undefined”. probably I am doing something really wrong
But it is my 4 script so.

I was logged as someone else by mistake. So now I am back. Sorry ACEmax it will not happen again.

I found only one way to do this script /at my level of knowledge /.
I create strings with words needed to do the move. Some of them are updated in the loop. And I execute full string then. Sloooooow.

rollout Hair2Spline "HairAnima2SplineAnim" width:212 height:237
(
	pickButton btn1 "PickButton" pos:[10,10] width:191 height:42
	spinner spn1 "startFrame" pos:[17,75] width:182 height:16 range:[0,200000,0] scale:1
	spinner spn2 "endFrame" pos:[16,105] width:183 height:16 range:[0,200000,100] scale:1
	spinner spn3 "By" pos:[16,150] width:183 height:16 range:[0,100,2] scale:1
	button btn2 "Hair2Spline" pos:[12,179] width:184 height:45

	on btn1 picked obj do
	(
		btn1.text=obj.name
		Global Hairr = obj
	)
	on btn2 pressed do
	(
		HairStart=spn1.value
		HairEnd=spn2.value
		fn HairSpline = Hairr.modifiers[#Hair_and_Fur].ConvertGuidesToSplines instance:Hairr
		
		sliderTime= HairStart
		Hairr.modifiers[#Hair_and_Fur].ConvertGuidesToSplines instance:Hairr
		FirstArray=objects as array
		
		AnimSpline = FirstArray [FirstArray.count]
		animateVertex AnimSpline #all
		
		for i in HairStart+1 to HairEnd by spn3.value do
		(
			sliderTime=i
			Hairr.modifiers[#Hair_and_Fur].ConvertGuidesToSplines instance:Hairr
			SekondArray=objects as array
			AnimTarget = SekondArray [SekondArray.count]
			animateVertex AnimTarget #all
			for s = 1 to (numSplines AnimSpline) do
			(
				for k = 1 to (numKnots AnimSpline s) do
				(
					StringA="AnimSpline.Spline_"
					StringB=s as string
					StringC="___Vertex_"
					StringD=k as string
					StringE="=AnimTarget.Spline_"
					FullString=StringA+StringB+StringC+StringD+StringE+StringB+StringC+StringD
					animate on
					execute FullString
					updateShape AnimSpline 
				)
			)
			delete AnimTarget
		)
	)
)
createDialog Hair2Spline

I have made a tool that converts hair animation to animated splines.
What I did was first on every frame spit out the spline shape of the hair.
After that I looped over all splines and used all splines to drive position of the first spline… delete redundant splines afterwards.

But I didn’t “move” the splines, I added keyframes on every controller of the spline
take a look at my reply here
I found that was faster on large amounts of hair then manually positioning them every frame.

-Johan

Also please note that
Code:
[left]animateVertex $[1] #all
animateVertex $[2] #all
$[1].Spline_1___Vertex_3 = $[2].Spline_1___Vertex_3 [/left]

Does infact instance the controllers of each spline to each other! you’d be better off copying their values! The second example fails because I see no animatevertex statement. So no controllers are created, and thus no instancing can be done. Make sure you understand what you are copying… controllers or values. And even further more you can’t dynamicly cast your loop value in a controller name like that. $[1].Spline_1__Vertex_3 is a hard coded name, you can’t simply swap 1 with a variable… you’ll need some other way to loop over the verts, also see my example posted above.

I understand your way of thinking but doesn’t work like that… it would require execute to parse a string with values, but I would advise against it and look into subanims.

$[1][4][8][2] is vert 1
$[1][4][8][5] is vert 2
$[1][4][8][8] is vert 3 etc.

You’ll see that a loop will work better that way, although it’s a bit more abstract.

-Johan