Idea: Highlighting new parts in a step

[Trevor Sandy]

...I thought LPub made a temporary LDraw file for every step and render that accordingly as assembly image?

Yes it does.

Isn't this the way color fade works too?

I only change the csi content colour code for previous step's parts.

...process each step file to draw outlines (line types) around visible edges (is that possible?).

The fade colour feature does distinguish between previous steps and current but preparation of the additive parts are much more simple than what I understand from reading your suggestion. For fade colour I just change the colour of the step's additive parts. The cis is then fed to the renderer and a faded image is produced.

It sounds like 'drawing outlines' will require significantly more processing to determine which edge lines will need to have it's colour manipulated.

Cheers,