Wed, 06/08/2022 - 02:21
Forums:
Hello all,
how to redisplay a AIS_PointCloud after removing some points?
Thank you :)
Handle(SelectMgr_EntityOwner) object = objects.at(i);
Handle(AIS_PointCloudOwner) pointCloudOwner = Handle(AIS_PointCloudOwner)::DownCast(object);
Handle(TColStd_HPackedMapOfInteger) points = pointCloudOwner->SelectedPoints();
int from = points->ChangeMap().GetMinimalMapped();
int to = points->ChangeMap().GetMaximalMapped();
for (int i=from; i<to; i++)
if (points->ChangeMap().Contains(i))
points->ChangeMap().Remove(i);
//until here everything makes sense and seems to work. But how to update the display?
Wed, 06/08/2022 - 08:05
Your code removes point indexes from selection map. To remove points from presentation you need remove them from array Graphic3d_ArrayOfPoints defined by AIS_PointCloud (e.g. re-create array or do some smarter things in subclass if your points array is really large) and then redisplay object (AIS_InteractiveContext::Redisplay() or similar).
Wed, 06/08/2022 - 23:49
Thanks Kirill,
I delete the points in my source and all works fine (and fast).
My point cloud has ~200.000 points and I was worried it takes too long. Turns out I can't even see a delay. I guess things changed since I was programming on a Commodore VC20 and saved my programs on a music cassette...
Thu, 03/02/2023 - 05:30
Hi Daniel, I want to know how to delete points in Graphic3d_ArrayOfPoints