Digitizing the outline of identified geobodies is like that of boundaries except we are digiting a polygon instead of a boundary. All digitized geobody points are maintained in 3D (world) coordinate space.


To add a new geobody, right click on the “Geobodies” node and select “Add new…”. Rename the geobody as appropriate.


Icons will appear at the top of the screen.


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These control how the boundary is digitized as follows –


1.       Add one or more points. Simply click on any point on the outcrop, lines will join each point digitized. Click on the tick (6) icon to complete the boundary or hit Escape on the keyboard. OpenOutcrop has been designed so that clicking in the middle of two existing points will insert a new one between the two (after the initial outline has been created).

2.       Move one or more points. Simply click and drag.

3.       Delete one or more points. Click close to any point to delete it.

4.      Undo (the previous operation).

5.      Redo (the previous operation).

6.      OK, I am finished with the current operation.


The following shows a completed geobody shaded in red. Note that the shading is “draped” over the outcrop.




Alternatively, geobodies may be shaded with lithological patterns. To select a pattern, click on the “Pattern” property of the geobody. This will result in the following dialog.



Click on the appropriate pattern and click “OK”. To display the pattern on the geobody, make sure that the “Fill type” property is set to “Pattern”.


You can experiment with the “Pattern size” and “Transparency” properties to give a desired effect.