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xarial / xcad

Framework for developing CAD applications for SOLIDWORKS, including add-ins, stand-alone applications, macro features, property manager pages, etc.
https://xcad.net
MIT License
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About ISw Type questions #114

Closed Brent-bai closed 10 months ago

Brent-bai commented 11 months ago

I noticed that the item of ISwBody.Faces is IXFace type, as I convert it to ISwFace using "as", the method Entity.GetDistance() will not obtain the value of two face. I used iModelDoc2.ClosestDistance() instead to resolve this problem. And there is a similar issue. When I added the specified PlanarFaces to the List and when iterating, List.Contains() did not return the correct judgment, resulting in duplicate objects in the list. I used Tag to resove it. I can not find the reason of it. As a novice in programming, it is possible that I am not familiar with C#, and I hope someone can answer my questions. Thank you. sw:2021 xcad: 0.8.0 beta 4839

Brent-bai commented 11 months ago

I have tried to set the List type to List, the Contain() method return the right bool value, but List not.

Brent-bai commented 11 months ago

Another problem: IXPart.Bodys[0].Faces return IEnumerable , which contains SwPlanarFaces and SwCylindriacalFaces, and all dispath or Entity is Face2Class. ISwPart.Bodys[0].Faces return same IEnumerable, but there are system com_object entities in the list, casuing some errors, as shown in the below picture. And it's not happened everytime by same part.

err

artem1t commented 11 months ago

I think this might be related to threading/COM with those dispatches. Dispatch is what SW provides. To compare the entities I recommend using the IXObject::Equals which will compare dispatches using the ISldWorks::IsSame. This should return true for the same entities even if one of those is __ComObject and other is IFace2

Brent-bai commented 11 months ago

I think this might be related to threading/COM with those dispatches. Dispatch is what SW provides. To compare the entities I recommend using the IXObject::Equals which will compare dispatches using the ISldWorks::IsSame. This should return true for the same entities even if one of those is __ComObject and other is IFace2

IsSame worked! Thank you very much. However, the list.Contains() method cannot be used, so I have to use a LINQ statement instead.