How to accelerate the the import function of STEP / IGES / STL

HSIEN-SHUN HSU's picture
HSIEN-SHUN HSU
Mon, 05/27/2024 - 12:42
Forums: 
Visualization and 3D Viewer

Hi all,

I'm trying to import a huge CAD file in OpenCASCADE application (over 100 MB), and it takes to import and render on the screen. Are there any optimized parameters or methods in STEPControl_Reader / IGESControl_Reader / STLControl_Reader to make the process more faster?

Dmitrii Pasukhin's picture
Dmitrii Pasukhin
Mon, 05/27/2024 - 13:46

STL can't be touched. But as for STEP, IGES, there are way to setting up your process.

1. Choose correct memory manager, I recommend to use JeMalloc, up to 50% on big files. Choosing about memery manager available in CMake stage after 7.8.

2. Setting up the ShapeHealing parameters. Up to 40% reading time is a ShapeHealing. All Shape healing parameters defined in src\XSTEPResource\STEP

Best regards, Dmitrii.