Canvas Tab

The Canvas tab displays a planar layout of the screens generated in the projection scene. The screenshots below illustrate examples of canvas layout for an immersive room and a cylinder projection scene respectively.

Canvas layout for an immersive room projection scene.

Canvas layout for a cylinder projection scene.

The canvas region is a composition of all screens in the projection scene with empty space in between. The canvas border is an axis aligned bounding box whose purpose is to give a visual cue of the canvas region and is drawn as thick yellow line.

Canvas Topology

The topology of the canvas can be adjusted to suit the installation. For a projection scene with no floor projection, the topology would typically be a horizontal row of screens. However, if the horizontal resolution is greater than 16k pixels, then moving some of the screens to form a grid instead of a row will allow the canvas to fit within the 16k x 16k limit.

For a projection scene with floor projection, it is common to have a grid arrangement, with the floor screens, positioned below the screens used for the walls. The advantage of this approach is that the width of the walls corresponds to the width of the canvas, and this has benefits when moving and scaling content. Also content can be moved from the walls to the floor with an intuitive ‘downward’ action. The illustration below shows how the floor screens can be repositioned using the left mouse button to drag them to a new location.

For performance reasons it is recommended to adjust your canvas topology to minimise empty space. The larger the canvas resolution the more GPU memory will be required.

Canvas Resolution

The Canvas Resolution (px) values give the overall canvas resolution in pixels specified in width and height respectively. The canvas resolution is calculated using the resolution of one of the width and height parameters together with the aspect ratio of the screen. Enter the known value of one of the parameters, based on the immersive space design drawings. The other dimension will then be automatically calculated and updated.

The height and width values of each of the screens which make up the projection scene are also calculated automatically. These are displayed below the Canvas Resolution as width, height pairs and labelled Left Resolution, Front Resolution, Right Resolution etc.