Unroll

Menu

This tool is accessible via the 'Tools > Projection > Unroll' menu.

Description

This method 'unrolls' a point cloud from a cylindrical (or conical) shape onto a plane:

Cylindrical shape to unroll

Cylindrical shape unrolled

Procedure

Select a cloud then start this tool.

Cylinder

File:Cc unroll dialog.jpg

'Unroll cylinder' dialog

To unroll a cylindrical shape, the parameters are:

• axis of revolution (X, Y or Z)
• radius
• and optionally a point on the axis (otherwise CloudCompare will try to guess it by computing the cloud gravity center)

Cone

This method unrolls a cone in a way that preserves surfaces.

'Unroll cone' dialog

To unroll a conical shape, the parameters are:

• axis of revolution (X, Y or Z)
• half angle (this is the aperture angle at the cone apex - in degrees)
• the cone apex position

Straightened cone

This method actually unrolls a cone-shaped cloud as if it was a cylinder, by first 'straightening' the cone walls.

'Unroll cone' dialog

To unroll a conical shape, the parameters are:

• axis of revolution (X, Y or Z)
• half angle (this is the aperture angle at the cone apex - in degrees)
• the cone apex position