如何获取AUTOCAD图形边界坐标.docx

 HYPERLINK /autocad/2013/02/get-image-clip-boundary-coordinates.html Get image clip boundary coordinates By? HYPERLINK /autocad/xiaodong-liang.html \t _self Xiaodong Liang Issue?I can set image’s clip by AcadRasterImage.ClipBoundary, but how do I get the AcadRasterImages clip boundary coordinates? I know if it is rectangular, I can get its bounding box, width and height. But, if the clip boundary is of a irregular shape, I cant find any exposed methods to get such data. Solution?The ObjectARX AcDbRasterImage::clipBoundary() equivalent functionality is not exposed in the current ActiveX Automation Model. We can work around this limitation by exposing an interface that does exactly that. The whole project is attached:?? HYPERLINK /files/imgclipboundary.zip Download ImgClipBoundary STDMETHODIMP CClipBoundaryObj::GetImageClipBoundary( ??? VARIANT* pVarDblArray, ??? VARIANT acadImage) { ????// TODO: Add your implementation code here ????try ??? { ??????? CComQIPtrIAcadRasterImage ??????????? pAcadImage(acadImage.punkVal); ????????if(!pAcadImage) ????????????throw?E_POINTER; ??????? CComQIPtrIAcadBaseObject ??????????? pBaseObj(pAcadImage); ????????if(!pBaseObj) ????????????throw?E_POINTER; ??????? AcDbObjectId id; ??????? pBaseObj-GetObjectId(id); ??????? AcDbObjectPointerAcDbRasterImage ??????????? pImage(id, AcDb::kForRead); ? ????????if(pImage.openStatus() != Acad::eOk) ????????????throw?E_UNEXPECTED; ??????? AcGePoint2dArray?array?=???????????? pImage-clipBoundary(); ? ????????int?len =?array.length(); ????????if(len == 0) ????????????throw?E_FAIL; ? ??????? AcGeMatrix3d mat; ??????? pImage-getPixelToModelTransform(mat); ??????? mat.inverse(); ??????? AcAxPoint2dArray pts; ????????for(int?i=0; ilen; i++) ??????? { ??????????? AcGePoint3d pt(array[i].x,?array[i].y, 0); ??????????? pt.transformBy(mat); ??????????? pts.append(AcGePoint2d(pt.x, pt.y)); ??????? } ??????? pts.setVariant(pVarDblArray); ??? } ? ????catch(const?HRESULT h) ??? { ????????// for now