Delphi中开放级联的接口

Question

I am trying to find a way to use Open Cascade (www.opencascade.org) - 3D Modeling Technology in one of our software which is written in Delphi.

I did manage top find an ActiveX which supports Open Cascade, but on trying it I did not like the visual quality of rendered images. The ActiveX lib can be found here (www.ewcad.com).

I am not able to locate any VCL for this nor can I find any import declarations for this on internet.

Answer 1

What makes you think that the visual output quality would be higher if you had a native VCL wrapper? The underlying library is C++, not C, so import libraries are not going to be enough. A "C++ class to VCL wrapper" interface for such a large project would be years of work.

Have you looked at GLScene? http://glscene.sourceforge.net/wikka/HomePage

W

Answer 2

I am using OCC from Delphi through a DLL exporting ANSI C functions. It was not required to export all of the more then 12000 Objects, just a set of wrapper functions to initialize, add geometry, modify it and store it to Disk.

I started with one of sample Applications provided with the OCC package and converted it to my personal DLL, wich is loaded at runtime.

It took me about 2 weeks for the first working sample.