Composition Projector
 | Composition Projector | Projects a Compostion Layer orthogonal onto one or multiple Screens in a Previs Scene. |
The Composition Projector creates an orthogonal projection of a Composition Layer. A Canvas can be bound to the Output of this virtual projector a Screen.
The mapping of this projection is calculated using Ventuz world transformation values of both the projector and the Screens to which the Composition Projector is mapped.
Different View Options are available for this Node. The options are similar to the properties that control Cameras inside of Ventuz:
View
The view matrix is responsible for simulating the position and orientation of a virtual camera. The Camera Node has different capabilities to set up the view matrix:
- Pan, Tilt, Roll has position and orientation properties. So the camera can be placed in the 3D World with the X,Y and Z Position and then panned, tilted and rolled just like a real camera.
- Look At is always oriented towards the Target coordinates. The camera can be moved by the X,Y and Z Position while it always looks at the specified target. Thus, the rotation is calculated automatically while the Roll can be set manually.
- Orbit makes it easy to rotate the camera around a target using Yaw, Pitch and Roll. The Target's X,Y and Z Position can be set as well as the Distance from the camera to the target.
- Matrix allows the use of a custom view matrix. The presets zero and identity matrix can be used or modified manually or the Matrix Property can be connected to a matrix coming from for example a Matrix Node or a Script.
| Setting | Description |
|---|---|
| Tracking | Allows for connecting this Previs Projector to an external tracking data |
| Misc | |
| Composition | Binds a Composition to this Projector. In 'real world' terms, it is setting the source or input of the projector |
| ResolutionWidth/Height | Changes the output resolution of the Projection if |
| OverrideResolution | Enables the resolution Width and Height changes set in the above options |
| IsMoving | Is used to continually recalculate the internal render target in the event the Projector is 'physically moving' inside of the previs scene. If the Screen is static, only this flag needs to be set. If both the Screens and the Projector are moving, both must be set |