Ring Quader – Stage

Three works in the truss cage of a concert stage

VisualisationStageFree spatial study

Visualisation of a fictional space – not a realised project.

A raised stage in a dark hall: at the back an LED wall with “Kardan”, left and right two screens with “Gleichlauf” and “Helix” from the Ring Quader series.

The truss cage frames the stage like a picture within a picture. The LED wall in the background carries the main work; the two side screens stand at an angle within the cage and mirror the movement in two related works from the series. Three spots on the upper truss cast warm and cool light onto the stage area.

The audience stands close to the platform and thins out towards the back; in the middle, the aisle to the mixing desk remains clear. In this way the work becomes a stage set – for a concert, a reading or as a performance in its own right.

Technical details

What it takes to build this space: dimensions, equipment, brightness.

The truss cage measures 14 × 6 metres at a height of 8 metres and stands on a 1-metre-high stage platform; it is built from black 30 cm trusses. The rear wall is an LED wall of approx. 13.2 × 7.2 metres made of 50 × 50 cm tiles; the two side surfaces are screens of approx. 5.2 × 7.2 metres, fed by rear projection or with additional LED modules. Three stage spots on the upper truss (3,200 K and 5,600 K) cast light onto the stage area. Floor plan, section and axonometric view show the set-up.

Room

The room of the scenario and how the images are placed in it.

Room: hall with raised stage and truss cage
Configuration: LED wall at the back, two side screens in the cage

Room	Width	Depth	Height
Hall	20 m	14 m	9 m
Stage	14 m	6 m	8 m

Real time and interaction

The film shows a recording. In the installation the work is computed live – and can respond to the space and its visitors.

Computation: live, in real time, on a high-end computer with a powerful 3D graphics card, NVIDIA RTX 4070 or higher; with many image surfaces also with several graphics cards
Output: all projectors in a room from one computer, as coordinated zones rather than separate videos
Interaction: 3D LiDAR scanners capture people and movement in the space; the work can respond to them
Fitting: mapping to the actual architecture – edges, columns, ceilings and floors

Drawings

Axonometric view, floor plan and section show the space and the projection cones.

Ring Quader – Stage — Axonometric view — **Axonometric view** · not to scale

Ring Quader – Stage — Floor plan — **Floor plan**

Ring Quader – Stage — Section — **Section** · not to scale

Glossary

Real time: The image is recomputed at every moment, about 60 times per second, instead of being played back as a finished video.
3D LiDAR scanner: Scans the space with laser light and captures people and movement in three dimensions – the basis of the interaction.
High-end computer: A computer with a powerful 3D graphics card – NVIDIA RTX 4070 or higher – that computes the image live and drives all projectors at once.
Mapping: Fits the projection to the actual geometry of the space so that image and architecture meet exactly.