Acces X and Y values of vertices seperately ?

[Dan Ebberts]

If you know the coordinates of the center, you should be able to figure out which quadrant a given vertex (v) is in with something like this:


center = ???
if (v[0] < center[0]){
if (v[1] < center[1]){
// upper left
}else{
// lower left
}
}else{
if (v[1] < center[1]){
// upper right
}else{
// lower right
}
}


Dan

[Steve Sierra]

Hi Dan,

Thanks for your quick reply !
That’s exactly what I am trying to do… The problem is, isn’t v[0] the first vertex of the shape, v[1] the second, etc…
I don’t know how to get to “v[0].value[0]” or “v[0].value[1]”.

Here’s what I’m doing :

var origLayer = app.project.activeItem.selectedLayer[0];
var origHalfX = origLayer.width/2;
var origHalfY = origLayer.height/2;
var origShape = origLayer.property(“ADBE Mask Parade”).property(“ADBE Mask Atom”).property(“ADBE Mask Shape”).value;
var origVerts = origShape.vertices;

for(var i = 0; i< numZLayers; i++){

var copyLayer = origLayer.duplicate();
var copyShape = copyLayer.property(“ADBE Mask Parade”).property(“ADBE Mask Atom”).property(“ADBE Mask Shape”).value

var modifiedShape = origShape;
var modifiedVerts = modifiedShape.vertices;
var h = origHalfX * (i/numZLayers);
var v = origHalfY * (i/numZLayers);

for(var j = 0; j < origVerts.length; j++){
var Overt = origVerts[j];
var Mvert = modifiedVerts[j];
var OvertX = Overt[0];
var OvertY = Overt[1];

if(OvertX < origHalfX && OvertY < origHalfY){origVertsM[j] = [OvertX + h, OvertY + v]};
if(OvertX < origHalfX && OvertY > origHalfY){origVertsM[j] = [OvertX + h, OvertY – v]};
if(OvertX > origHalfX && OvertY < origHalfY){origVertsM[j] = [OvertX – h, OvertY + v]};
if(OvertX > origHalfX && OvertY > origHalfY){origVertsM[j] = [OvertX – h, OvertY – v]};
}
copyShape = modifiedShape;

Thanks !;)

[Steve Sierra]

Hi,

I think I found what I was doing wrong thanks to this page:

https://omino.com/pixelblog/2008/12/25/ae-mask-vertices-from-extendscript/

before the last line, I had to re-inject the vertices in the shape, and then set the value of the shape, not with “=”.
So the ending should have been :

modifiedShape.vertices = origVertsM;
copyShape.setValue(modifiedShape);

Cheers !