1. jukka.ronkko@vtt.fi Oct 30, 2006 LUONNOS Navigation techniques for construction industry product models Jukka Rönkkö, HUT/VTT jukka.ronkko@vtt.fi

2. jukka.ronkko@vtt.fi Oct 30, 2006 LUONNOS Contents The concept of interactive 3D visualisation Construction application areas Building end user perspective Research question Method Interaction technique: navigation Example: existing application analysis Current status of my work

3. jukka.ronkko@vtt.fi Oct 30, 2006 LUONNOS Interactive 3D visualization Consist of computer generated 3D graphical presentation and interaction methods for moving around in a virtual environment and manipulating it. Construction perspective: give the user a better understanding of a building to be built, to select among design choices, to represent simulation results in a comprehensible way´.

4. jukka.ronkko@vtt.fi Oct 30, 2006 LUONNOS Product model visualisation Visualising construction industry product model data can involve: various domains: architectural, structural engineering etc. Simulating different properties: thermal, lighting, acoustical and visualizing the results

5. jukka.ronkko@vtt.fi Oct 30, 2006 LUONNOS Current situation in interactive 3D in construction Nice looking visuals for marketing and lighting simulation. Other characteristics of a building is visualised for other technical persons: like thermal comfort data.

6. jukka.ronkko@vtt.fi Oct 30, 2006 LUONNOS Building quality from the end- user perspective? Quality of living is a strengthening trend. How about visualising the quality of a building solution beforehand to the end user of the building? Factors of interest like: thermal comfort, ergonomics, lighting quality, space information We need illustrative enough means to present the relevant product model and/or simulation data to a non-technical person. Examples: thermal vis, spatial ergonomicsthermal visspatial ergonomics

7. jukka.ronkko@vtt.fi Oct 30, 2006 LUONNOS Research question What visualisation methods could be used to enhance construction product understanding even for non- technical persons?

8. jukka.ronkko@vtt.fi Oct 30, 2006 LUONNOS

9. jukka.ronkko@vtt.fi Oct 30, 2006 LUONNOS Interaction theory Human computer interaction in graphics applications can be thought to be composed of basic interaction tasks: Object manipulation (indicating an object, selecting, moving and orienting, releasing) Alphanumeric input Navigation in a 3D world Usability viewpoint: these have to be tackled first!

10. jukka.ronkko@vtt.fi Oct 30, 2006 LUONNOS Navigation = locomotion & wayfinding Locomotion in 3D worlds: how to move ones’ viewpoint interaction: input device -> interaction technique in software -> visual feedback of motion to the user different input and display methods: mouse, keyboard, joystick, data glove, spacemouse & different displays

11. jukka.ronkko@vtt.fi Oct 30, 2006 LUONNOS Navigation = locomotion & way finding Way finding Mental process of knowing where things are in a 3D world and knowing how to get there. In the real world we use cues to remember places: turn left after the green house. We also use maps.

12. jukka.ronkko@vtt.fi Oct 30, 2006 LUONNOS An example from the construction world Zermatt, a software for viewing ArchiCAD eported architectural models. The building model and the viewing software form a single.exe file that can be easily distributed.

13. jukka.ronkko@vtt.fi Oct 30, 2006 LUONNOS Zermatt Navigation: Movement is first person –type, i.e. looking through a persons’ eyes. Keyboard for movement, collision constraints mimic real world type movement in a building. A map to aid comprehension of the building structure. Observations: first person view, with constrained ”walking” gives some sense of being inside of a building. it is not easy to form an opinion of the building as a whole or of a floor plan of a particular storey. NOT MUCH USE OF DOMAIN SPECIFIC KNOWLEGDE

14. jukka.ronkko@vtt.fi Oct 30, 2006 LUONNOS Current status: New navigation technique in development Combines ideas from games for first person/third person views. Takes advantage of IFC model structural information: multi-scale navigation by recognising where the user is located: building storey, space Software prototype implementation is under progress. Let’s see what happens next.