Trim one side of a rectangle

TrimPath-RectangleSide.jsx

/* 
Rename the Trim Path to the following:
left,l,LEFT,L
right,r,RIGHT,R
top,t,TOP,T
bottom,b,BOTTOM,B
*/

// TO PLACE ON TRIM.END
Rectangle = thisProperty.propertyGroup(3).content("Rectangle Path 1").size;
x = Rectangle[0];
y = Rectangle[1];
side = thisProperty.propertyGroup(1).name.toString().toLowerCase().substr(0, 1);
p = (x + y) * 2/100;
if (p == 0) p = 1; // avoid division by 0

function myTrim(side) {
	switch (side) {
		case "l":
		case "r":
			return y / p ;
		case "t":
		case "b":
			return x / p ;
	}
}
myTrim(side);




// TO PLACE ON TRIM.OFFSET
side = thisProperty.propertyGroup(1).name.toString().toLowerCase().substr(0, 1);
Rectangle = thisProperty.propertyGroup(3).content("Rectangle Path 1").size;
x = Rectangle[0];
y = Rectangle[1];
p = (x + y) * 2 / 360;
if (p == 0) p = 1; // avoid division by 0

function myTrim(side) {
	switch (side) {
		case "r":
			return 0;
		case "l":
			return 180;
		case "t":
			return -x / p;
		case "b":
			return y / p;
	}
}
myTrim(side);