Output of 3D projector’s view

Setting up second Render Surface

In order to output the view of the 3D projector, we need a second Render Surface that we can assign to the V-Node and on which we can render the projector’s view.

In the timeline with the pattern, turn the Master fader’s opacity back to 100.

In the Render Surfaces panel, rename the Render Surface to RS Castle.

On this Render Surface, we will play the media that should display on the Castle as it is linked to the 3D castle’s material.

Add a second Render Surface and rename it RS Output.

Set the Y position of this render surface to 1500.

In the Timeline list panel, rename the timeline with the pattern on it into SHOW.

Add another timeline and name it PROJECTOR.

Open this second timeline and from the 3D Scenes panel, drag & drop the Pico Projector onto the timeline.

Set the layer’s position to Y: 1500 to set it on the second render surface.

Depending on your setup, the castle may or may not display properly in the projector’s view.

In the 3D Scenes and 3D Viewer panel, check that the projector’s Near and Far value fully englobe the 3D castle model.

Adjust the Near and Far values if needed.

In the V-Nodes panel, select the V-Node and in the Editor panel, V-Node tab, Settings subtab, set the Surface to RS Output.

Understanding and Refining

*Note: To fully understand what is happening it is important to grasp the entire process :
- Points are selected and placed on the 3D model.
- These same points are output in the projector and placed at the identical locations on the real model.
- The 3D projector’s position is automatically computed to mirror the position of the real projector, relative to the castle.
- The 3D projector’s point of view is sent directly to the output and in the projection.
- Content is played directly on the material of the 3D model, in the 3D Scene.
- The material was set as Unlit and is not affected by lighting in the 3D Scene, always displaying at 100% brightness.

As mentioned in the previous step, you may refine the projection in several manners:

• By applying a warp directly on the Output. This can be a Curve type warp grid, but take care that moving points too much may result in geometry deformation, as visible on the squares in the pattern.
• By activating the Live mode in the 3D mapping and moving points around.
• By adding another point and recomputing the 3D mapping to refine the 3D projector’s position.