ARX实现Z轴归0

admin1

const TCHAR* prompt[2] = {_T("\n选择需要Z轴归0的实体<退出>:"), _T("")};
    ads_name ssname;
    if (RTNORM != acedSSGet(_T(":$"), prompt, NULL, NULL, ssname))
        return;
    AcDbObjectIdArray ids = CBaseDwg::GetObjectids(ssname);
    if (ids.isEmpty())
        return;
    AcGePoint3d ptTop(0, 0, 1e99);
    AcGePoint3d ptBelow(0, 0, -1e99);
    AcGeVector3d vec1 = ptTop.asVector();
    AcGeVector3d vec2 = ptBelow - ptTop;
    AcGeVector3d vec3 = AcGePoint3d::kOrigin - ptBelow;
    AcGeMatrix3d mat1, mat2, mat3;
    mat1.setToTranslation(vec1);
    mat2.setToTranslation(vec2);
    mat3.setToTranslation(vec3);
    for (int i = 0; i < ids.length(); i++)
    {
        AcDbEntityPointer pEnt(ids[i], AcDb::kForWrite);
        if (Acad::eOk != pEnt.openStatus())
            continue;
        pEnt->transformBy(mat1);
        pEnt->transformBy(mat2);
        pEnt->transformBy(mat3);
    }
    acedSSFree(ssname);