How can I setup masked subsystems to have a gradient color background?

The default subsystem appearance has a color gradient, with white at the top and gray at the bottom.

When I use a masked subsystem, the gradient goes away and I'm left with white or whatever plain color I choose.

How can I setup my masked subsystem to use a color gradient ?

[Ryan G]

Are you looking for a custom color gradient or the default subsystem gradient?

[Jason S]

the default subsystem gradient

Answer 1

[Jacob Halbrooks]

In the Mask Editor, the first tab Icon & Ports allows you to define the block icon. The bottom of the tab shows what drawing commands are available to you. Two of these look of interest for creating a gradient background: patch and image . In MATLAB, patch can be used to create a shape with gradient color, but when I pasted example code, I received an error that I passed too many inputs to patch. As a result, it appears that the patch command in the Editor is a simplified version that probably does not support gradients.

That leaves the image option. I first created my image by doing a PrintScreen with the Subsystem block in view, then cropping the block in a paint program and saving to JPG format. I was then able to use this in the block. You can execute subsequent Mask Editor commands to draw on top of the image, so here is an example using this approach:

   image('MaskGradient.jpg');
   disp('My Block');