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Hi @natalia ! I try to find a way to deal with Graphic3d_ArrayOfPoints, the underling entities which define an AIS_PointCloud, by re-uploading modified portion of Graphic3d_ArrayOfPrimitives without recomputing entire presentation using Graphic3d_Buffer::InvalidatedRange() mechanism...

Hi @natalia Unfortunately in your sources link, I did not find any details related to displaying or hiding some elements in an AIS_PointCloud. Can you direct me on the correct path? Thank you! Ioan

Wow! It is definitely worth taking a look and understanding the whole process! Thank you very much !!!🙃

Hello! I have an AIS_PointCloud data fill with points and I like to determine the best way to hide and show elements from it in real time, for example inside an animation. AIS_PointCloud data could include hundreds of thousands of points. How can I approach the problem and what would be the...

Hi Natalia! Thank you for your response!!! Ioan

Thank you very much Natalia!!! It works just perfect! One more question here: when I modify the SetHilightMode to use DM_Points parameter, a small blue cross is displayed above each selected point. Is this marker customizable? I like to display other type of marker, like a sphere and with a...

It turned out that the points are displayed but they are very small - 1 pixel. How can I change the visual aspect of an AIS_PointCloud like marker, color and the size?

Hello! In my Open Cascade project I have a class derived from AIS_InteractiveObject which includes a private member: Handle(AIS_PointCloud) aPntCloud; I like to display the content of this cloud_of_points variable but so far I haven't succeeded. Graphic3d_ArrayFlags aArrayFlags =...

Hi JSlyadne! I'm trying to understand all the process steps, which probably will take time.

Hello everyone! I try to implement my first simulation inside OCCT and need some basic help / ideas how to start. I have an array of points and like to move a simple cylinder (the center of it) between the points using a particular speed. Also I like to be able to pause the simulation or to...

Thank you for your replay! I'm not sure how I'm going to start, fore sure I'll have to dig more!

Hello everybody! I like to know if is possible to create a non-circular helix using OCC tools or possible other NURBS libraries. My goal is to create a helix based on a 2D sketch (the blue selected sketch in the attached pictures) as starting point. The helix ramping angle and distance between...

Thank you very much for your observations!!

Excellent info!! Yes, the verification is purely geometric. I managed to differentiate using the parameter values u0 and u1. It seems to work just perfectly! Thank you very much!! All the best! Ioan

Thank you! :)

Hi Jonathan! All I have as input data is an array of Geom_Curve. I do not know when or if I need to check these Geom_Curve if some of them are of Geom_TrimmedCurve type. I assumed that IsClosed () might help, but unfortunately, regardless of whether it is a arc or a circle, this function returns...

How can I differentiate between an full circle and an arc of the same support circle? I'm trying to cycle through the elements of a TopoDS_Shape of type TopAbs_COMPOUND. Everything just work fine using the below code: double u0, u1; Handle(Geom_Curve) Curve; TopoDS_Edge Edge; Curve =...

Thank you very much for all responses!! I will try to implement them in my code. Regards! Ioan

Hello! I'm very new with OCCT technology and try to find some basic info: I have an array of Geom_Curve geometry and must cycle on everyone of them and try to find the defining parameters for each of them. For example in the case of Geom_Line (the lines) I need to extract the start point and the...

I think I found a solution to my problem, but anyway thank you very much for the hint!!! For sure is a long way for me to use and to get used with OCC! Happy w-end! Ioan