Mask size(width x hight)via script

[Dan Ebberts]

I suppose you could create a shape layer (with a single click of the pen tool) and link its path to the mask with an expression. You could then get the dimensions with sourceRectAtTime(), and even turn the eyeball off for the shape layer so it doesn’t show up in the comp.

[Tudor Baican]

I tried now to realize your idea in this feed from April 8, 2007.

I iterate through the path and collect all min and max values.

myPath = thisComp.layer("Shape Layer 1").mask("Mask 1").maskPath.points();
xValues = [];
yValues = [];
for (i in myPath){
	xValues.push(myPath[i][0]);
	yValues.push(myPath[i][1]);
};
width = Math.max(...yValues) - Math.min(...yValues);
height = Math.max(...xValues) - Math.min(...xValues);
left = Math.min(...xValues);
top = Math.min(...yValues);