How to remove a point form a ccPointCloud object?

[CCNewbieL6]

Hello daniel,
Now I know how to add/ modify(rotate/ translate) a piont. But I cannot find a method to remove a point by a given index from a ccPointCloud object.
Could you help me?
Thank you very much.

[daniel]

You have to use the 'swap' method of ccPointCloud::swapPoints so as to swap the point you want to remove and the last point of the cloud. Then resize the cloud to its original size minus 1.

[daniel]

Well, that's the way to remove one point efficiently. If you want to remove several points in a row, you have to use a CCLib::ReferenceCloud and create a new cloud with only the points referenced by the ReferenceCloud.