Unfold Cloud
This command helps to unfold a cloud along a polyline. For instance, it is a helper function to generate one orthoimage for all frontages of a building.
Requirements
Select one cloud and one polyline, then launch the command. If the polyline is not planar, this command will automatically project it on a plane according to the axis define in 1).
A linear geometry or a cad curve can be used instead of a polyline but they will be discretized automatically.
Define the axis which is by default to Z=1 for frontages applications. A horizontal axis is relevant for unfolding a roof or a ceiling.
Optionally, reverse the path orientation if it has the wrong one.
In case of a closed path, define the origin.
Select the points to unfold:
Use All points when the content to unfold has been defined prior than launching this command.
Use Slice selection to select the points to unfold by defining two buffer widths around the polyline. Define the Left and Right widths, then click Preview the selection.
In both case, note that points which cannot match the polyline are filtered out automatically.
Click Preview: the view switches to Front view to display the result.
Technical information
The first point of the polyline is used for the insertion point of the result.
Practise
See the Exercise: unfold a cloud in the beginner's guide section and Unfold a tunnel cloud in the practical exercise section.