 Adobe After Effects ForumConstraint movement along X, Y and Z axis
Constraint movement along X, Y and Z axis
by Rowan de Geus on Jun 21, 2019 at 9:45:04 am

I am struggling creating an expression to constrain movement of a layer to a certain angle. I found this isometric expression which works great:

pos = transform.position;
x = effect("X Movement")(1);
z = effect("Z Movement")(1);
y = effect("Y Movement")(1);
[x*Math.sqrt(3) + z*Math.sqrt(3) + pos, -x + z + y + pos];

But how can I adjust this to match angles of 190 and 140?

EDIT: Found it for the X axis (thanks Dan):

x = effect("X Movement")("Slider");
a = 190;
value + [x,y]

But how to adjust this so Z has an angle of 140?

Re: Constraint movement along X, Y and Z axis
by Rowan de Geus on Jun 21, 2019 at 11:07:43 am

Got it:

pos = transform.position;
x = effect("X Movement")(1);
z = effect("Z Movement")(1);
y = effect("Y Movement")(1);
a1 = 190;
a2 = 40;
[x + z + pos, -x*Math.tan(degreesToRadians(a1)) + z*Math.tan(degreesToRadians(a2)) + y + pos];

Re: Constraint movement along X, Y and Z axis
by Michael Szalapski on Jun 28, 2019 at 5:05:26 pm

Thank you for sharing your solution!

- The Great Szalam
(The 'Great' stands for 'Not So Great, in fact, Extremely Humble')

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