For all issues regarding the Forums use, please, refer to the Forum Rules.

Our Solutions

Need professional assistance?
Consider our:

Support Offerings


Need to speed up your development?
Have a look at our:

Samples & Tools


Need some functionality extending standard OCCT capabilities?
Check out our:

Adv. Components

Related pages


Anonymous's picture

Dear all,

I am using the GeomAPI_ProjectPointOnSurface class to find the projections of 3D points on surfaces. For small numbers of points (and surfaces) this class works perfect. My problem is that I have to process large numbers of points and surfaces. I am just working on an example with 28000 points and 1200 surfaces. The projection process runs for more than 1.5 hours on a AMD K6III 450Mhz, which is far too much for practical purposes. Does anybody know whether there is a method to speed up calculation using CASCADE classes, or do I have to implement some fast algorithm myself? Thanks in advance

Thomas Haller

Contact us

Attention: DO NOT use this form for all kind of request for the removal of your personal data. Please follow this link for such cases.