KarinsDad said:
When your PC looks at an NPC fighter from behind, does he see the front of the fighter instead?
When your PC looks at an image of an NPC fighter from behind, does he see the front of the fighter instead?
No, and that's exactly my point.
If all viewers saw the same thing
regardless of their angle - that is, people looking at the image from 180 degrees apart both saw the fighter's face - then the 'fake perspective overlay' trick could work from all directions.
But since they don't, it can't; the viewers see the illusion as if it were an actual object.
And an actual object mimicking a hole via clever perspective tricks on a 2D overlay only works from a certain direction. Since the illusion mimics the actual object, it will behave in the same way.
What I think this means is that a figment of a monster looks like the same monster to all observers, but not the same angle of the same monster to all observers. It's a figment of a troll, a creature behind it would see the back of the troll, not the front whereas a creature in front of the troll would see the front side of the troll, not the back.
Absolutely.
And a figment of a fake-perspective overlay looks like the same fake-perspective overlay to all observers, but not the same angle of the same fake-perspective overlay to all observers. Observers in front see a hole. Observers behind see a distorted image that just looks wrong.
Thus:
Now, in this case, the figment has an advantage - anything projecting
above the ground can be 3D, so it's not necessary for the leg to stretch so far along the ground. But anything projecting
below the ground can't be 3D; it must be fake-perspective, and is thus subject to viewing angle limitations.
Another example:
-Hyp.