Insert Spline in Drawing Example (C++ COM)

This example shows how to insert a spline in a drawing.

 

STDMETHODIMP CDgtlPen::demo3()

{

    HRESULT                                 hr = S_OK;

    CComPtr <IModelDoc2>                    pModel;

    CComQIPtr <IDrawingDoc>                 pDraw;

    CComPtr <IView>                         pView;

    CComPtr <IView>                         pFocusLockedView;

    CComPtr <ISheet>                        pSheet;

    int                                     pPropArray[4];

    double                                  pKnotsArray[11];

    double                                  pCntrlPntCoordArray[21];

    VARIANT_BOOL                            updateEditRebuild = TRUE;

    long                                    retval = NULL;

    VARIANT_BOOL                            focusLocked = NULL;

    ZeroMemory(pPropArray, 4 * sizeof(int));

    ZeroMemory(pKnotsArray, 11 * sizeof(double));

    ZeroMemory(pCntrlPntCoordArray, 21 * sizeof(double));

    pPropArray[0] = 3;      //Dimension

    pPropArray[1] = 4;      //Order

    pPropArray[2] = 7;      //Number of control Points

    pPropArray[3] = 0;      //Periodicity

    pKnotsArray[0] = 0;

    pKnotsArray[1] = 0;

    pKnotsArray[2] = 0;

    pKnotsArray[3] = 0;

    pKnotsArray[4] = 0.3;

    pKnotsArray[5] = 0.3;

    pKnotsArray[6] = 0.6;

    pKnotsArray[7] = 1;

    pKnotsArray[8] = 1;

    pKnotsArray[9] = 1;

    pKnotsArray[10] = 1;

    pCntrlPntCoordArray[0] = -0.1;      pCntrlPntCoordArray[1] = -0.009;    pCntrlPntCoordArray[2] = 0;

    pCntrlPntCoordArray[3] = -0.11;     pCntrlPntCoordArray[4] = 0.013;     pCntrlPntCoordArray[5] = 0;

    pCntrlPntCoordArray[6] = -0.14;     pCntrlPntCoordArray[7] = 0.035;     pCntrlPntCoordArray[8] = 0;

    pCntrlPntCoordArray[9] = 0.015;     pCntrlPntCoordArray[10] = 0.019;    pCntrlPntCoordArray[11] = 0;

    pCntrlPntCoordArray[12] = -0.059;   pCntrlPntCoordArray[13] = -0.024;   pCntrlPntCoordArray[14] = 0;

    pCntrlPntCoordArray[15] = 0.012;    pCntrlPntCoordArray[16] = -0.018;   pCntrlPntCoordArray[17] = 0;

    pCntrlPntCoordArray[18] = 0.054;    pCntrlPntCoordArray[19] = -0.013;   pCntrlPntCoordArray[20] = 0;

    hr = m_iSldWorks->get_IActiveDoc2(&pModel);

    _ASSERT(pModel);

    pDraw = pModel;

    _ASSERT(pDraw);

    hr = pDraw->IGetFirstView(&pView);

    _ASSERT(pView);

    while(pView != NULL)

    {   

        CComPtr <IView>                     pNextView;

        hr = pView->get_FocusLocked(&focusLocked);

        

        if (focusLocked)

        {

            pFocusLockedView = pView;

            _ASSERT(pView);

            pView = NULL;

        }

        else

        {

            hr = pView->IGetNextView(&pNextView);

            pView = NULL;

            pView = pNextView;

        }

    }

    hr = pDraw->IGetCurrentSheet(&pSheet);

    _ASSERT(pSheet);

    hr = pSheet->get_FocusLocked(&focusLocked);

    hr = pSheet->put_FocusLocked (TRUE);

    

    hr = pModel->InsertSketch2(updateEditRebuild);

    hr = pModel->ISketchSplineByEqnParams(pPropArray, pKnotsArray, pCntrlPntCoordArray, &retval);

    _ASSERT(retval);

    hr = pSheet->put_FocusLocked(focusLocked);

    if(pFocusLockedView != NULL)

        {

        hr = pFocusLockedView->put_FocusLocked(TRUE);

        }

    hr = pModel->GraphicsRedraw2();

    return S_OK;

}