Preview - adjustable model opacity/transparency

[Nebur99]

Is there an existing issue for this feature request?

• [X] I have searched the existing issues

Is your feature request related to a problem?

In the Preview the design model is barely discernible with minimal opacity. When trying to optimize things, comparing the design model with the sliced output is very helpful. Right now it's not really possible because it's barely visible.

Which printers will be beneficial to this feature?

All

Describe the solution you'd like

Add two sliders in the Preview that adjust sliced model opacity and design model opacity. Positioning the sliders in the upper area of the view would work nicely from a users point of view.

Describe alternatives you've considered

Alternatively, with option for future enhancements:

• add an extra "Color scheme" called "Comparison" (like Line Type, Line Width, Flow etc.)
• for now: just contains the opacity sliders described and color pickers to choose the two colors to use for design and sliced model
• in the future: compares design and sliced model and indicates deviations outside of a user defined range (max plus/minus mm) by a color scale (this a typical feature of CAM software in the machining world)

Additional context

No response

[philsward]

100% would like this added for the "Prepare" page. Ideally, select a model -> right click -> opacity

The "workaround" that people have pointed out is to add a "fill" using multiple filaments. This is unnecessary and not an ideal workflow when the model needs to have transparency for adding modifiers, support blockers, etc.

The only option for modifiers on models that are enclosed is to guess where to put them, slice, move, slice, wash-rinse-repeat.

I haven't had a need for changing the opacity on the preview page as suggested by the OP but on the Prepare page? Definitely needed.