Disable lighting in Slice representation
The default lights are designed to help identify 3D shapes by placing several off-center lights. One behavior of this is that faces parallel to the viewing plane are not fully lit. For 3D shapes this is desirable, but when rendering something in 2D you get a darkening of colors.
To see this effect, do the following:
- Create a Mandelbrot source. Apply. (Interaction mode will go to 2D.)
- In the property panel, click Lights -> Edit (an advanced property).
- Toggle the Additional Headlight on and off and observe the effect in the 3D view.
Note that when the Additional Headlight is on, the image is shown in full brightness and the colors in the image actually match those of the scalar bar.
I propose that when the 3D view is in 2D interaction mode, the additional headlight is implicitly turned on. (It is reset to the actual controls when going back to 3D interaction mode.) This will add a change in brightness when switching between 2D and 3D interaction, but I think this is justified.