//---------------------------------------------------------------------------------------
//
// 功能： 曲面绘制回调函数
//
// 输入参数：
// AeccDisplayOrientation &viewMode
// IAeccSurface* surface
// IAcadBlock *pAnonymousBlock
//
// 返回值：bool
//
// 作 者：
//
// 日期： 2007/08
//
// 修改记录：无
//
//---------------------------------------------------------------------------------------
bool customSurfaceDraw( const AeccDisplayOrientation &viewMode, IAeccSurface* surface,
IAcadBlock* pAnonymousBlock )
{
HRESULT hr = S_OK;
CComQIPtr<IAeccTinSurface> pSurfaceTin( const_cast<IAeccSurface*>(surface) );
if ( pSurfaceTin ) {
VARIANT varTriangles;
hr = pSurfaceTin->get_OutputTriangles( &varTriangles );
if ( SUCCEEDED(hr) ) {
long nDoubles = 0;
double *pdblArray = 0;
variantToDoublesArray( varTriangles, &nDoubles, &pdblArray );
if ( pdblArray ) {
// 文本宽度
const double dblWidthAndHeight = 10.0;
// 每三个点构成一个三角形
for ( int i = 0, nIndexTriangle = 0; i < nDoubles; i += 9, nIndexTriangle++ ) {
//计算三角形的中线点
double dblCenterPoint[3];
dblCenterPoint[0] = (pdblArray[i ] + pdblArray[i+3] + pdblArray[i+6]) / 3;
dblCenterPoint[1] = (pdblArray[i+1] + pdblArray[i+4] + pdblArray[i+7]) / 3;
dblCenterPoint[2] = (pdblArray[i+2] + pdblArray[i+5] + pdblArray[i+8]) / 3;
VARIANT varCenterPoint;
doublesToVariant( 3, dblCenterPoint, &varCenterPoint );
// 文本转换
CString strText;
strText.Format( _T("%.0f"), dblCenterPoint[2] );
CComBSTR bstrText( strText );
// 将文本添加到匿名块
IAcadMText *pIAcadMText = 0;
hr = pAnonymousBlock->AddMText( varCenterPoint, dblWidthAndHeight, bstrText, &pIAcadMText );
if ( SUCCEEDED(hr) ) {
pIAcadMText->put_Height( dblWidthAndHeight );
pIAcadMText->put_AttachmentPoint( acAttachmentPointMiddleCenter );
}
SafeArrayDestroy( *varCenterPoint.pparray );
}
free ( pdblArray );
}
SafeArrayDestroy( *varTriangles.pparray );
}
}
return (true) ;
}
// 清除节点的所有子节点，并将strText作为文本节点添加为本节点的子节点
int CBpXMLNode::SetText(const wchar_t *szText)
{
if (m_pDOMNode == NULL || szText == NULL)
return XML_ERROR;
try
{
_bstr_t bstrText(szText);
m_pDOMNode->put_text(bstrText);
}
catch (...)
{
return XML_ERROR;
}
return XML_OK;
}
