Digital Light & Color

New capabilities for the Oval Gradient transformation:

• Center the origin on the image
• Ability to define the inner shape ( e.g. rectangle ) at a distance from the outer shape, to enable the creation of uniform gradient widths along all sides. That implies not preserving the aspect ratio. See image below showing undesirable wide and narrow gradient widths along the long and the short sides.

This could only work for rectangles or circles -- for ellipses, the offset curve is not an ellipse and may not even be convex.

A capability for offset curves sounds interesting !

Unfortunately, the math is ugly.

Thanks for the continuum oval-rectangle oval gradient. However, as you pointed out it cannot provide constant width gradient along the shape.
I tried to obtain the desired effect using a combination of Frame, Gaussian blur, Crop transformations, but if is a convoluted convoluted solution.
Is there a simpler way to get the desired effect ?
Script is attached

The Mask Feather tool does this, although in a limited fashion since you have to start with a solid rectangle or ellipse and there is no Color Line control to vary the gradient.

So does Add Border if you use the Softness slider, which looks like it does exactly what you are trying to do in the sample image.

Thanks for the Add border suggestion, I had not thought about it.