I’ve found this trick i want to share because i searched a long time for a workaround to this and never found anything, till today playing with the projector i discovered this out of the blue.
If you have a material and you set the tag like: UV 1 - Material - UV 2
In the material all the maps will use the UV 2. But every map you place in the projector with UVW mapping projection will use the UV map 1!
i also hope chaos/corona devs can add a UV channel for each texture or shader slot. like UV 1, UV2 etc.
we made that via and UV channel tag in the old v-ray 3.x version for c4d, so i am quite sure it is technically possible in c4d.
of course there might be more intelligent was to implement this.
c4d objects can have more than 1 UVW tag. so needed would be to assign this tags not only to mats, but also to shaders inside materials (like c4d projector allows different mapping per shader inside a c4d material)