Length cm, m

[Der_Zerspahner]

Hello,

How can I specify the length of a line or plane in cm or m?

[daniel]

In CloudCompare, units are 'implicit'. Therefore, if you decide that 1 is 'meter' for instance, then 0.01 is 'cm', etc. This is due to the fact that almost not point cloud or mesh formats save the information about units...

And of course if you are doing this with an existing cloud or mesh, then you'll need to keep the same 'convention'.

[Der_Zerspahner]

Thank you. So Is there a possibility to change the size of the object afterwards?

[daniel]

Yes you can use the 'Edit > Multiply / scale' tool.

[Der_Zerspahner]

Thank you for the quick reply, you help me a lot. One more question. Is it possible to set your own point clouds without uploading a Point cloud file. I want do digitalize a Picture with Points. So can i upload only the Picture in cloudcompare and add than the Points by hand?

[daniel]

Of course. Simply create a ccPointCloud instance, then reserve some memory (with 'ccPointCloud::reserve'), and eventually fill it with points (addPoint), colors, etc.

If it's done in a plugin, you have to add this point cloud to the main DB (with 'm_app->addToDB()').