Adobe Photoshop 2020 Scripting. ApplyRadialBlur - fourth parameter (object BlurCenter)

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I think for those who created Interop.Photoshop.dll there is a special place in hell. Question. I'm trying to change the center of the RadialBlur effect in C#. But I have no idea what and how to transfer parameter there. The definition of method says

void ApplyRadialBlur (int Amount, Photoshop.PsRadialBlurMethod BlurMethod, Photoshop.PsRadialBlurQuality BlurQuality, [object BlurCenter])

That is, anything can be passed to the fourth parameter. Because the object keyword is the root of all types.

In the vbs help (https://www.adobe.com/devnet/photoshop/scripting.html, https://www.adobe.com/content/dam/acom/en/devnet/photoshop/pdfs/photoshop-vbs-ref-2020.pdf) it says

[, BlurCenter] type Number (Double) The parameter BlurCenter is the position (unit value).

WHAT? TO ME? DO? WITH THIS? INFORMATION?

I spent several hours and so could not find a normal working description of com interface.

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c#.netphotoshopphotoshop-script

2 Answers

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double x = 0.2;
double y = 0.2;
object[] BlurCenter = new object[2] { x, y }; 

.ApplyRadialBlur(50, PsRadialBlurMethod.psZoom, PsRadialBlurQuality.psRadialBlurBest, BlurCenter);
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I don't know about Interop.Photoshop.dll, but in JavaScript, the position (4th paramamater) is optional. It's just an x,y position in an array:

activeDocument.activeLayer.applyRadialBlur(10, RadialBlurMethod.ZOOM, RadialBlurQuality.BEST, [100,100]);