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Mask Reverse Path Direction
Posted: June 14th, 2005, 6:12 am
by monter
Mask Reverse Path Direction? How to make?
Posted: June 14th, 2005, 1:26 pm
by davestewart
Perhaps if you could be more specific....
Posted: June 15th, 2005, 1:48 am
by monter
1.Select Layer
2.Select Mask
3.var TempMaskArray= new Array(Select Mask)
// TempMaskArray[0,1,2,3,4...,n]
4...
5. Select Mask = newMaskArray[n,...,4,3,2,1,0]
In the illustrator10 there is a function
Windows->Attributes(F11) Reverse Path Direction OFF / Reverse Path Direction ON
In the After Effects is not present.
Example.
One solid, two elliptical masks.
We apply Effect->Render->Stroke.
Problems appear at morphing masks.
Posted: June 15th, 2005, 6:44 am
by davestewart
I would probably do something like :
- create a new shape object
- loop through the verts of the original mask and assign to the shape
- loop through the in and out tangents, swap them, and add to the shape
- apply the shape
A little function could do this quite neatly I'm sure.
Do you script?
:D
Posted: June 15th, 2005, 8:23 am
by davestewart
I started thinking about it,so thought I'd do the leg work... just for fun....
Code: Select all
function reverseMask (obj,maskIndex){
// check
if(obj==undefined){
alert('Object undefined');return
}
if(maskIndex>obj.Masks.numProperties){
alert('Incorrect mask index specified');return
}
// existing mask
var curMask= obj.Masks.property(maskIndex).property("ADBE Mask Shape")
var verts= curMask.value.vertices
var inTans= curMask.value.inTangents
var outTans= curMask.value.outTangents
// collect the values
var tempVerts=[]
var tempInTans=[]
var tempOutTans=[]
for(var i=curMask.value.vertices.length-1;i>=0;i--){
tempVerts.push(verts[i])
tempOutTans.push(inTans[i])
tempInTans.push(outTans[i])
}
// build the shape
var tempMask=new Shape()
tempMask.vertices = tempVerts
tempMask.inTangents = tempInTans
tempMask.outTangents = tempOutTans
tempMask.closed=curMask.value.closed
// assign mask
curMask.setValue(tempMask)
}
reverseMask(app.project.activeItem.layers[1],1)
It seems to reverse the mask just fine, although Vegas doesn't seem to respect this? Maybe your morphing thing will.
Let me know...
Cheers,
Dave
Posted: June 16th, 2005, 12:42 am
by monter
Thanks! Works!
Only changes "Set First Vertex".
morphing no testing.
Posted: June 18th, 2005, 6:50 am
by davestewart
dude...
You'll have to be a little more descriptive with your responses! I'm a scripter - not a cryptologist!
Reverse Mask
Posted: March 9th, 2007, 11:20 am
by philspitler
I can't get this script to work in AE7, I get Syntax error on line2.
Any ideas?
Thanks.
Phil
Posted: March 12th, 2007, 1:57 am
by monter