Transform Sample

It may be convenient to change the coordinate system of a sample model, for example, if it will simplify the specification of measurement point positions. Transformations will be applied to sample and to all attached objects (which includes fiducial points, measurement points and vectors if present). The software provides several options for transforming samples.

Warning

Do not forget to add fiducial points before applying a transformation to the sample otherwise the sample could be misaligned on the instrument when fiducials are used.

Note

Transformations are applied directly to sample (as opposed to being stored) so when no sample exist all the transform windows will be disabled.

Rotate sample

Click the rotate sample rotate button on the toolbar. The rotate sample window will be opened. Type in the desired X, Y, Z axis rotation and click the Rotate button.

Rotate Sample Window

Translate sample

Click the translate sample translate button on the toolbar. The translate sample window will be opened. Type in the desired X, Y, Z axis translation and click the Translate button.

Translate Sample Window

Transform sample with matrix

Click the transform sample transform button on the toolbar. The transform sample window will be opened.

Transform Sample Window

  • Click the Load Matrix button and select the Transformation matrix file (.trans) that contains the transformation matrix.

  • A preview of the file will be shown in window, to use the inverse of the loaded matrix click the Invert Transformation Matrix check box

  • Click the Apply Transform button

Move origin to sample

It may be useful to move the scene origin to center or edge of the sample. To do this click the move origin to sample origin button on the toolbar.

Move Origin to Sample Window

  • Select the boundary to move the origin to.

  • Select the Axis to Ignore i.e. leave fixed.

  • Click the Move Origin button

Tip

If the sample contains extraneous surfaces for example, parts of a table may be scanned with the sample, using this may not place the origin at the expected position since the extraneous surface may now constitute part of the boundary. In such a case, remove extraneous surfaces in a mesh editing software beforehand.

Rotate sample by plane alignment

It may be useful to rotate the sample so that a plane on the sample is aligned with a plane in the world. To do this click the rotate sample by plane alignment plane button on the toolbar.

Rotate Sample by Plane Alignment Window

  • Activate point selection by clicking the point button.

  • Select a minimum of 3 points to estimate a plane.

  • Specify a final plane in the world coordinate frame.

  • Click the Align Planes button.

Rotating and panning the scene is disabled (zooming is still enabled) when point selection is active, click the select button to activate scene navigation. To delete a point, select the point from the point list (the corresponding graphics will be highlighted) and click the delete button.

Tip

You can select points from the point list while point selection is active. Select multiple points using Shift + Left Click or Ctrl+ Left Click