TRMTRM wrote:Thanks for the help NateMac!
From what I could see in the breakdown you use camera projection in C4D to project the illusion from where you want the audience to stand, on to a virtual floor and then render that out from the perspective of the projector (hanging from the truck). Is that right?
That's correct. In this example their are '2' Render Passes.
First there is what we will call the
Spectator Real Pass. I placed a 5ft wide by 9ft depth (16:9 Aspect Ratio surface)
Surface on the ground.
(This could be anything that you are projecting on, I chose this flat surface and side to get the most out of my projection.)
Then I created a camera that was 10ft away from the edge and 68" high looking at a downward angle at the
Surface. This is my person & my
Spectator Camera. At this position in the real world, the illusion will work.
I then created my animation on top of the created
Surface. The key here is that from the
Spectator Camera point-of-view, looking at the
Surface, the illusion can not pass the edges of the
Surface. This is your window, anything that is above, below, left or right of the
Surface when viewed from the
Spectator Camera, will not be seen.
After you have created your animation you will render the 3D animation from the POV of the
Spectator Camera.
You are halfway there.
Now that we've created the animation, the
Spectator Camera will become the
Projection Mapping Camera. You will now use that camera to project your render animation onto the Empty
Surface.
--- Please be sure to lock this camera down, if it moves slightly, the illusion will fail ----With your
Projection Mapping Camera projecting your animation onto the surface, from that same POV you should see your 3D illusion, even though it being projected onto the Flat
Surface.
Here's where the real magic comes, create a new camera in space as to where your
Real World Projector will be. Be sure to get the Surface all in frame and keep your measurements handy. Hopfully your animation that looked pretty and 3D from the
Projection Mapping Camera's POV, looks all skewed and funny looking. This is Good.
Finally record the 3D skewed animation of the
Surface from your
Real World Projector camera, and your done.
Set up your real scene in the world, Your Projector where your
Real World Projector's camera was and stand where the
Spectator Camera/Projection Mapping Camera was and watch your fo-3D.
