Resampling to LSM format

This option performs a virtual laser scan of the current object, saving it in the UCL proprietary .LSM format. In order to get a successful conversion, the object must be suitably positioned in the centre of the window at an appropriate scale and orientation. The orientation must be selected by the user prior to conversion. There is an automatic centreing and scaling option within the conversion process but this is not guaranteed to to produce the best position for the scan. In the event of positioning problems, it is possible to position and size the object manually before conversion. It is then necessary to disable the automatic positioning process within the conversion dialog box.

The dialog box also allows control of the number of profiles and the angular spacing between them. The total angular range of the scan = angle increment * (no of profiles -1). This is symmetrically divided either side of the initial view so that the middle profile is at the front. To ensure that this profile is in the middle, an odd number of profiles is always used. If an even number of profiles is entered, this will be rounded down to the nearest odd number. If the mirror option is checked, then only the right side of the object is scanned and the left side of the resulting scan will be a mirror image of the right side. Great care with positioning and orientation is necessary for this to give a good result so the automatic positioning is unlikely to be adequate.

As the conversion proceeds, a red line on the screen shows the region of the object which is being scanned. This is a simulation of the physical scanning process and has the same 'line of sight' limitations. Hidden surfaces will be lost in this conversion process.

Checking the Old style ID box allows the saving of an old version of the .LSM header for backwards compatibility

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