Is there an existing issue for this feature request?

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Is your feature request related to a problem?

In my work, I have always lacked the quality of surface finishing in 3d printing. I have previously asked this solution on other slicer programs, but it did not seem so simple with the Orca Slicer.

I used parameters such as top/bottom_solid_infill_flow_ratio, initial_layer_line_width, top_surface_line_width and top_bottom_infill_wall_overlap to adjust this effect.

For example, if you want to get a pattern with a standard line thickness and have a gap of the same width between them, then the parameters should be as follows:
line width - x2 of nominal (0.8mm if you take 0.4mm of standard wall thickness, or 200%)
layer flow ratio - 0.5 (or 50%)
line overlap - yours rate + half width of standard line with each enlargement (for our example 50% of 0.4mm of standard wall thickness. In other words, you had 25% overlap before modification, write the value 25%+50%=75% in this field, 125% - if you want take 1 line of pattern and 2 lines of gap)

I have prepared and printed several examples of the resulting patterns on glossy plastic as well as with a contrasting layer. In the example there are 3 options: with 100% filling, with 1 line + 1 gap, with 1 line with 2 gaps.

When using shiny, glossy, silk or translucent plastics, this effect is further enhanced. You can emphasize not only the pattern itself, but also achieve an additional iridescent effect.

As you can see, the solution is simple, and it was not necessary to radically change the code to get this effect.

Which printers will be beneficial to this feature?

All

Describe the solution you'd like

It would be very convenient if the slicer implementation had one parameter that defined all these settings. It can be called either a tactile or fill factor.
At values above 1 (or 100%), it will be possible to determine the width of the gap between the lines, and it can be not only a multiple, but any fractional one. For values less than 1, you can simply reduce the extrusion flow, which will result in a more subtle pattern.

Known problems:

• It is noticed that when the thickness of the line of the first layer changes, the width of the wall also changes. I would not like this parameter to pursue this problem.
• It would be nice if the parameters were separate for the upper and lower layers, since the flow parameter is the same for both layers.
• The main disadvantage of this approach is that there is an incorrect influx of the pattern on the walls due to the inaccurate mathematics of drawing a line of atypical width. Perhaps it is necessary to disable the function of filling in the gaps on the upper and lower layers.

Describe alternatives you've considered

No response

Additional context

If this feature is solved in the program, it can open up a great direction in creating decorative coatings of the upper and lower layers made on a conventional 3D printer.
Already now I can offer several versions of such patterns as "carbon", "scales", "chess", "satin"... In addition to their decorative properties, they can be pleasant to the touch, and allow you to hold prints more securely in your hands.
Then, with a certain implementation, you can print mesh structures, for example, for different types of filters...