*********************************************************************
Global Controls


*Edge distance
angle = degreesToRadians(effect("Page Angle")("Angle")/4);
opp = effect("Edge Width")("Slider")/2
adj = Math.tan(angle)*opp


*Page1
effect("Cover")("Slider")*0.75

*Page2
effect("Cover")("Slider")*0.5

And so on...


*********************************************************************
Object Controls


*Angle
effect("Object Angle")("Angle")
if (effect("Object Angle")("Angle") > 180)
{180}
else {
if (effect("Object Angle")("Angle") < 0)
{
0
}
}

*Height
thisComp.layer("object name").height

*B
angle = Math.abs(effect("Object Angle")("Angle")-90);
hypo = effect("height")("Slider");
opp = Math.sin(degreesToRadians(angle))*hypo

*t
a =effect("height")("Slider");
b =effect("B")("Slider");
angle =degreesToRadians(thisComp.layer("Global Controls").effect("Page Angle")("Angle")/2);
t = (a*b)/(Math.sqrt(Math.pow(a,2)*Math.pow(Math.cos(angle),2) + Math.pow(b,2)* Math.pow(Math.sin(angle),2)));

*X
angle =degreesToRadians(thisComp.layer("Global Controls").effect("Page Angle")("Angle")/2);
t = effect("t")("Slider");
x = t * Math.cos(angle);

*a
angle = degreesToRadians(Math.abs(effect("Object Angle")("Angle")-90));
if (angle == 0)
{
angle = 1
}
opp = effect("X")("Slider");
size = (opp / Math.sin(angle))*2;



*********************************************************************
Object

XRotation
hypo =height*2;
adj =thisComp.layer("Object Control").effect("a")("Slider");
if (adj > hypo)
{
adj = hypo;
}
if (thisComp.layer("Object Control").effect("Object Angle")("Angle") > 90)
{transform.xRotation = (radiansToDegrees(Math.acos(adj/hypo))-90);}
else
{transform.xRotation = (radiansToDegrees(Math.acos(adj/hypo))-90)*-1;}