snguide.cpp

基于超图sne开发的一个详细的例子。提供查询

// SNGuide.cpp: implementation of the SNGuide class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "Navigator.h"
#include "SNGuide.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

SNGuide::SNGuide()
{
	m_pntStart.x = 0;
	m_pntStart.y = 0;
	m_pntEnd.x = 0;
	m_pntEnd.y = 0;
	m_pntNext.x = 0;
	m_pntNext.y = 0;
	
	m_dSimulateSpeed = 5.0;
	
	m_pDatasource = NULL;
	m_strRouteInfo = "";
}

SNGuide::~SNGuide()
{

}

UGbool SNGuide::OnInitGuide()
{
	//////////////////////////////////////////////////////////////////////////
	//初始化		
	UGdouble dAdjustTolerance = 0.000222;
	UGdouble dOutlierTolerance = 0.001111;
	UGString strAlias  = "";
	UGbool bInitGuide = FALSE;
	
	UEPathElem* pPaths = NULL;
	UGint iPathCount = 0;
	
	// 从路径规划结果中获取引导信息
	UGbool bGetGuideInfo = m_searchOutput.GetGuideInfo(pPaths, iPathCount );
	if (!bGetGuideInfo)
	{
		return FALSE;
	}
	
	if (!m_pDatasource)
	{
		return FALSE;
	}
	
	// 初始化引导引擎
	bInitGuide =   m_GuidanceEngine.InitGuidance(
		m_pDatasource, pPaths, iPathCount,
		m_pntStart, m_pntEnd,
		dAdjustTolerance, dOutlierTolerance);
	if ( !bInitGuide )
	{
		MessageBox(NULL, TEXT("Fail to initialize GuideEngine!"),NULL, MB_OK);
		return FALSE;
	}
 	return TRUE;
}

UGlong SNGuide::OnSimulateNavi(UGMapWnd* pMapWnd)
{
	if (!pMapWnd)
	{
		return FALSE;
	}
	UGlong lGuide = 0;
	UGbool bGetAzimuth = FALSE;	
	UGdouble dAzimuth = 0;
	UGPoint2D stop (0, 0);
	
	// 模拟导航
	lGuide = m_GuidanceEngine.GuideBySpeed(m_dSimulateSpeed, stop);
	
	if(lGuide == UG_GUIDANCE_GUIDEBYSPEED_SUCCEEDED)
	{		
		// 当前道路的方位角
		bGetAzimuth = m_GuidanceEngine.GetGuideAzimuth(dAzimuth);		
		// 地图旋转，使之沿着车前近的方向
		if (bGetAzimuth)
		{
			pMapWnd->m_Map.SetAngle(dAzimuth);
		}
		
		m_pntNext = stop;	
		pMapWnd->SetCenter(m_pntNext);
		
		// 获取引导信息
		UEGuideRouteInfo guideRouteInfo;
		UGbool bGetRouteInfo = m_GuidanceEngine.GetGuideRouteInfo(1, guideRouteInfo);
		if (bGetRouteInfo)
		{
			UGString strName = guideRouteInfo.strRouteName;
			UGString strDistance;
			strDistance.Format("%f M", guideRouteInfo.dDistance);
			
			m_strRouteInfo =  "名称：" + strName + "\n" + "距离：" + strDistance + "\n";
		}
	}

	if (lGuide == UG_GUIDANCE_GUIDEBYSPEED_ARRIVE_DESTINATION)
	{
		m_GuidanceEngine.GetGuideSpeech(m_strRouteInfo);
	}
	pMapWnd->Refresh();
	
	return lGuide;	
}

void SNGuide::SetDatasource(UGNdfDataSource* pDatasource)
{
	if (!pDatasource)
	{
		return;
	}
	
	m_pDatasource = pDatasource;
}

UGString SNGuide::GetRouteInfo()
{
	return m_strRouteInfo;
}