Difference between revisions of "Unroll"

Revision as of 07:45, 14 January 2017

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

Cylindrical shape to unroll

Cylindrical shape unrolled

Select a cloud then start this tool.

'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)

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

'Unroll cone' dialog

To unroll a conical shape, the parameters are:

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:

@@ Line 24: / Line 24: @@
 === 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]]