St Just Mines Research Group
Survey and 3d Modeling

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Getting Started Viewing the Models

The models have been saved in VRML format which have a WRL file extension. To view the fully interactive 3D models you will need a VRML viewer such as Cortona Viewer, this will work with a range of windows web browsers and can be downloaded free from here

Unfortunately Cortona no longer make a Mac version, we are currently researching what is available. A good place to start your own research for Mac and Linux is here http://cic.nist.gov/vrml/vbdetect.html

Once you have installed Cortona you are ready to start viewing the models. Depending on your connection speed the larger models may take a while to dowload so be patient.

All the models have been optimized to reduce file size for the web so the 'faceted' appearance has been introduced by this process, the original models are of much higher resolution.

For Best Results With Cortona

Read the Cortona documentation to learn how to use the application but for a quick start click on the 'eye' button to select examine mode, then select the 'turn' button which is the third in the next group of 4. By pressing the left mouse button and moving the mouse you can rotate and manipulate the model.

Fly through is selected by the 'butterfly' button, hold down the left mouse button whilst moving the mouse to move through the model. To change your eye level hold down 'alt', left click and move the mouse to adjust your height.

In fly mode it is particularly important to have the navigation speed correct for the model or it will be very difficult to navigate. These models work best at normal speed, to check your settings right click in the cortona screen >Preferences > Navigation >Travel Speed set to Normal
The Models Mine Best viewing

Red Dippa (8MB)

Download

zipped archive of the two models and all the necessary image files. Only 1.98MB wrlfiles.zipx
The model represents a hand drilled overhand stope in Bellan mine dating from the early 20th century, the survey is about 7 metres long by roughly 7 metres at the highest part of the stope. This represents a day's surveying with manual recording of measurements. The survey records the footwall, lode, roof, hanging wall and floor as separate objects which can be rendered appropriately, the lode can be seen as a dark grey colour.

This model works best in examine mode with the turn button selected, The rock surface is rendered and is transparent if viewed from the other side. This enables the full 3d shape to be seen.

Rosemergy Demo (2.66MB)

 These workings probably date from the early part of the 18th Century. This mine is quite unusual for our area as the lode has a very flat dip. The ground is quite soft and the lode very narrow, the lode left in place can be seen in a brown colour and between these is the cavity where the lode has been removed. The cavity is filled with waste rock and in most instances opens into a wider space accessed from above.

This is a great little model that works particularly well in fly mode. In Cortona this works best from the start position so if you have already manipulated the model in examine mode, click on 'Restore' (second button from the right) then click on the butterfy to go into fly mode.Press the left mouse button and move the mouse forward right left or back to control your journey, pressing the alt key at the same time enables you to change your height.

The latest version upoaded 7 Feb 2010 has collision enabed so you shoudn't be able to crash through walls


If you have been unable to find a way to view the models you can get a taster from this YouTube video

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