Unroll: Difference between revisions

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=== Cone ===
=== Cone ===
This method unrolls a cone in a way that preserves surfaces.
[[Image:Cc_unroll_dialog_cone.jpg|frame|center|'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.


[[Image:Cc_unroll_dialog_cone.jpg|frame|center|'Unroll cone' dialog]]
[[Image:Cc_unroll_dialog_cone.jpg|frame|center|'Unroll cone' dialog]]

Revision as of 15:45, 14 January 2017

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