How to change the anchor point of a layer when clicking a button?

[Bram Hoekstra]

Hi, my name is Bram and I'm from the Netherlands. I'm curious how to change the anchor point of a layer to a specified position when clicking a button.

I hope someone can help me out with this.

[Justin Taylor-Hyper Brew · Accepted solution]

You can set the anchor point of a layer like this:

// Get Layer
var layer = app.project.activeItem.layers[1];
// 2D Layer
layer.transform.anchorPoint.setValue([100,100]);
// 3D Layer
layer.transform.anchorPoint.setValue([100,100,100]);

Put your anchor Point function inside of your onClick() event of your button and that's it.

[Bram Hoekstra]

Can you do this with percentages as well?

[Justin Taylor-Hyper Brew]

Sure, you just do the math. If you want to center the anchor point, you can by dividing the width and height in half:

// Get Layer 
var layer = app.project.activeItem.layers[1]; 
// 2D Layer 
layer.transform.anchorPoint.setValue([layer.width*.5,layer.height*.5]); 

[Bram Hoekstra]

It doesn't work on a text layer the same way as on a solid.

Do you know how to fix this?

[Justin Taylor-Hyper Brew]

Strange, sure someone else has the right answer, seems like this should work for text layers:

// Get Layer   
var layer = app.project.activeItem.layers[1]; 
var textSize =  layer.sourceRectAtTime(1, true)
var width = (textSize.width*.5)*-1;
var height = (textSize.height*.5)*-1;
// 2D Layer   
layer.transform.anchorPoint.setValue([width,height]);

But it's slightly off. You can just use the Command ID instead with the layer selected:

app.executeCommand(10312);