BOOL CDrawing::DrawElement(CDC* pDC, OgdcElemPoint3D* pElemPoint3D, BOOL bSelected)
{
OGDCASSERT(!OGDCIS0(m_dCoordRatio) && !m_rcClient.IsRectEmpty());
OgdcPoint3D* pPoint3Ds = &pElemPoint3D->m_point;
OgdcPoint2D pnt;
pnt.x = pPoint3Ds->x;
pnt.y = pPoint3Ds->y;
CPoint* pPoints = NULL;
if(!GeoToDevice(&pnt, 1, pPoints))
{
return FALSE;
}
CPen* pPen = pDC->GetCurrentPen();
COLORREF color = RGB(0,0,0);
if(pPen != NULL)
{
LOGPEN logPen;
pPen->GetLogPen(&logPen);
color = logPen.lopnColor;
}
CBrush brush(color);
CBrush* pOldBrush = pDC->SelectObject(&brush);
int nRadius = m_curStyle.m_nMarkerSize / 2;
pDC->Ellipse(CRect(pPoints[0].x-nRadius, pPoints[0].y-nRadius, pPoints[0].x+nRadius, pPoints[0].y+nRadius));
pDC->SelectObject(pOldBrush);
delete[] pPoints;
pPoints = NULL;
return TRUE;
}
BOOL CDrawing::DrawElement(CDC* pDC, OgdcElemMultiPoint* pElemMultiPoint, BOOL bSelected)
{
OGDCASSERT(!OGDCIS0(m_dCoordRatio) && !m_rcClient.IsRectEmpty());
OgdcPoint2D* pPoint2Ds = pElemMultiPoint->m_points.GetData();
CPoint* pPoints = NULL;
if(!GeoToDevice(pPoint2Ds, pElemMultiPoint->m_points.GetSize(), pPoints))
{
return FALSE;
}
CPen* pPen = pDC->GetCurrentPen();
COLORREF color = RGB(0,0,0);
if(pPen != NULL)
{
LOGPEN logPen;
pPen->GetLogPen(&logPen);
color = logPen.lopnColor;
}
CBrush brush(color);
CBrush* pOldBrush = pDC->SelectObject(&brush);
for(int i=0; i<pElemMultiPoint->m_points.GetSize(); i++)
{
pDC->Ellipse(CRect(pPoints[i].x-3, pPoints[i].y-3, pPoints[i].x+3, pPoints[i].y+3));
}
pDC->SelectObject(pOldBrush);
delete[] pPoints;
pPoints = NULL;
return TRUE;
}
//! 显示数据集。
BOOL CDrawing::DrawVector(CDC* pDC, OgdcDatasetVector* pDatasetV)
{
OGDCASSERT(!OGDCIS0(m_dCoordRatio) && !m_rcClient.IsRectEmpty());
OgdcQueryDef queryDef;
queryDef.m_nType = OgdcQueryDef::Bounds;
queryDef.m_nOptions = OgdcQueryDef::Geometry;
queryDef.m_nCursorType = OgdcQueryDef::OpenStatic;
queryDef.m_nCursorLocation = OgdcQueryDef::UseClient;
queryDef.m_rc2Bounds = m_rcViewBounds;
OgdcRect2D rcDtBounds = pDatasetV->GetBounds();
double dSearchArea = m_rcViewBounds.Width() * m_rcViewBounds.Height();
double dDatasetArea = rcDtBounds.Width() * rcDtBounds.Height();
if(dSearchArea >= dDatasetArea*0.6)
{
queryDef.m_rc2Bounds = rcDtBounds;
}
OgdcRecordset* pRecordset = pDatasetV->Query(queryDef);
if(pRecordset != NULL)
{
OgdcElement* pElement = NULL;
pRecordset->Move(OgdcRecordset::Begin, 0);
while(!pRecordset->IsEOF())
{
if(pRecordset->GetElement(pElement) && pElement != NULL)
{
DrawElement(pDC, pElement);
}
else//断网情况下避免长时间等待 http://192.168.115.2:8090/browse/UGC-4322
{
break;
}
pRecordset->Move();
if(pElement != NULL)
{
delete pElement;
pElement = NULL;
}
}
pDatasetV->ReleaseRecordset(pRecordset);
pRecordset = NULL;
}
return TRUE;
}
//! 缩放。
void CDrawing::Zoom(double dRatio)
{
OGDCASSERT(!OGDCIS0(m_dCoordRatio) && !m_rcClient.IsRectEmpty());
if(dRatio < 0 || OGDCIS0(dRatio) || OGDCIS0(dRatio-1.0))
{
return;
}
if (m_dCoordRatio > 5e-10)
{
m_dCoordRatio /= dRatio;
}
SetCoordRatio(m_dCoordRatio);
}
BOOL CDrawing::DrawElement(CDC* pDC, OgdcElemRegion3D* pElemRegion3D, BOOL bSelected)
{
OGDCASSERT(!OGDCIS0(m_dCoordRatio) && !m_rcClient.IsRectEmpty());
OgdcPoint3D* pPoint3Ds = pElemRegion3D->m_points.GetData();
CPoint* pPoints = NULL;
if(!GeoToDevice(pPoint3Ds, pElemRegion3D->m_points.GetSize(), pPoints))
{
return FALSE;
}
pDC->PolyPolygon(pPoints, pElemRegion3D->m_polyCounts.GetData(), pElemRegion3D->m_polyCounts.GetSize());
delete[] pPoints;
pPoints = NULL;
return TRUE;
}
//! 显示几何对象。
BOOL CDrawing::DrawElement(CDC* pDC, OgdcElement* pElement, BOOL bSelected)
{
OGDCASSERT(!OGDCIS0(m_dCoordRatio) && !m_rcClient.IsRectEmpty() && pElement != NULL);
switch(pElement->GetType())
{
case OgdcElement::ElemPoint:
{
return DrawElement(pDC,(OgdcElemPoint*)pElement, bSelected);
}
case OgdcElement::ElemMultiPoint:
{
return DrawElement(pDC,(OgdcElemMultiPoint*)pElement, bSelected);
}
case OgdcElement::ElemLine:
{
return DrawElement(pDC,(OgdcElemLine*)pElement, bSelected);
}
case OgdcElement::ElemRegion:
{
return DrawElement(pDC,(OgdcElemRegion*)pElement, bSelected);
}
case OgdcElement::ElemText:
{
return DrawElement(pDC,(OgdcElemText*)pElement, bSelected);
}
case OgdcElement::ElemPoint3D:
{
return DrawElement(pDC,(OgdcElemPoint3D*)pElement, bSelected);
}
case OgdcElement::ElemLine3D:
{
return DrawElement(pDC,(OgdcElemLine3D*)pElement, bSelected);
}
case OgdcElement::ElemRegion3D:
{
return DrawElement(pDC,(OgdcElemRegion3D*)pElement, bSelected);
}
default:
{
break;
}
}
return FALSE;
}
void CDrawing::SetCoordRatio(double dCoordRatio)
{
OGDCASSERT(!OGDCIS0(m_dCoordRatio) && !m_rcClient.IsRectEmpty());
if(dCoordRatio < 0 || OGDCIS0(dCoordRatio))
{
return;
}
m_dCoordRatio = dCoordRatio;
OgdcPoint2D pntCenter = m_rcViewBounds.CenterPoint();
OgdcDouble dHMargin = m_rcClient.Width()*m_dCoordRatio*0.5;
OgdcDouble dVMargin = m_rcClient.Height()*m_dCoordRatio*0.5;
m_rcViewBounds.left = pntCenter.x - dHMargin;
m_rcViewBounds.right = pntCenter.x + dHMargin;
m_rcViewBounds.top = pntCenter.y + dVMargin;
m_rcViewBounds.bottom = pntCenter.y - dVMargin;
}
//! 设备坐标到地理坐标转换。
BOOL CDrawing::DeviceToGeo(CPoint* pPoints, int nCount, OgdcPoint2D*& pPoint2Ds)
{
OGDCASSERT(!OGDCIS0(m_dCoordRatio) && !m_rcClient.IsRectEmpty() &&
!m_rcViewBounds.IsEmpty());
if(nCount <=0 || pPoints == NULL)
{
return FALSE;
}
if(pPoint2Ds != NULL)
{
delete[] pPoint2Ds;
pPoint2Ds = NULL;
}
pPoint2Ds = new OgdcPoint2D[nCount];
for(int i=0; i<nCount; i++)
{
pPoint2Ds[i].x = m_rcViewBounds.left + pPoints[i].x*m_dCoordRatio;
pPoint2Ds[i].y = m_rcViewBounds.top - pPoints[i].y*m_dCoordRatio;
}
return TRUE;
}
BOOL CDrawing::GeoToDevice(OgdcPoint3D* pPoint3Ds, int nCount, CPoint*& pPoints)
{
OGDCASSERT(!OGDCIS0(m_dCoordRatio) && !m_rcClient.IsRectEmpty() &&
!m_rcViewBounds.IsEmpty());
if(nCount <=0 || pPoint3Ds == NULL)
{
return FALSE;
}
if(pPoints != NULL)
{
delete[] pPoints;
pPoints = NULL;
}
pPoints = new CPoint[nCount];
for(int i=0; i<nCount; i++)
{
pPoints[i].x = OGDCROUND((pPoint3Ds[i].x - m_rcViewBounds.left)/m_dCoordRatio);
pPoints[i].y = OGDCROUND((m_rcViewBounds.top - pPoint3Ds[i].y)/m_dCoordRatio);
}
return TRUE;
}
BOOL CDrawing::DrawElement(CDC* pDC, OgdcElemText* pElemText, BOOL bSelected)
{
OGDCASSERT(!OGDCIS0(m_dCoordRatio) && !m_rcClient.IsRectEmpty());
long nFontHeight = 10, nFontWidth = 5;
OgdcTextStyle textStyle = pElemText->m_textStyle;
if(textStyle.m_bFixedSize)
{
nFontHeight = OGDCROUND(textStyle.m_dHeight*3);
if(nFontHeight == 0)
{
return TRUE;
}
nFontWidth = OGDCROUND(textStyle.m_dWidth*3);
}
else
{
nFontHeight = OGDCROUND(textStyle.m_dHeight/m_dCoordRatio);
if(nFontHeight == 0)
{
return TRUE;
}
nFontWidth = OGDCROUND(textStyle.m_dWidth/m_dCoordRatio);
}
int nOldBkMode = 0;
if( textStyle.m_bBackOpaque )
{
nOldBkMode = pDC->SetBkMode(OPAQUE);
}
else
{
nOldBkMode = pDC->SetBkMode(TRANSPARENT);
}
CString strFontName = textStyle.m_strFaceName;
strFontName.TrimLeft();
strFontName.TrimRight();
LOGFONT stFont;
memset(&stFont,0,sizeof(LOGFONT));
stFont.lfWeight=FW_NORMAL;
stFont.lfItalic = textStyle.m_bItalic;
stFont.lfEscapement = OGDCROUND(textStyle.m_dAngle*10);
stFont.lfOutPrecision = OUT_TT_PRECIS;
stFont.lfClipPrecision = CLIP_LH_ANGLES;
stFont.lfQuality = DRAFT_QUALITY;// PROOF_QUALITY;
stFont.lfPitchAndFamily = TMPF_TRUETYPE|FF_SCRIPT;
if(textStyle.m_bBold)
{
stFont.lfWeight = 700;//设置为粗体
}
else
{
stFont.lfWeight = 0;//400
}
if(textStyle.m_bUnderline)
stFont.lfUnderline = TRUE;//设置为下画线
else
stFont.lfUnderline = FALSE;
if(textStyle.m_bStrikeOut)
stFont.lfStrikeOut = TRUE;//设置为删除线
else
stFont.lfStrikeOut = FALSE;
stFont.lfHeight = nFontHeight;
stFont.lfWidth = nFontWidth;
strcpy(stFont.lfFaceName,strFontName);
COLORREF color = textStyle.m_clrFore;
if(bSelected)
{
CPen* pPen = pDC->GetCurrentPen();
if(pPen != NULL)
{
LOGPEN logPen;
pPen->GetLogPen(&logPen);
color = logPen.lopnColor;
}
}
COLORREF corForeOld = pDC->SetTextColor(color);
COLORREF corBackOld = pDC->SetBkColor(textStyle.m_clrBack);
for(int i=0; i<pElemText->m_strTexts.GetSize(); i++)
{
stFont.lfEscapement = OGDCROUND(pElemText->m_angles[i]*10);
CString strText = pElemText->m_strTexts[i];
OgdcPoint2D pnt2D = pElemText->m_points[i];
CPoint pntAnchor;
CPoint* pPoints = NULL;
GeoToDevice(&pnt2D, 1, pPoints);
pntAnchor = pPoints[0];
delete[] pPoints;
pPoints = NULL;
CFont fontCurrent;
fontCurrent.CreateFontIndirect(&stFont);
CFont *pOldFont = pDC->SelectObject(&fontCurrent);
pDC->TextOut(pntAnchor.x, pntAnchor.y, strText);
pDC->SelectObject(pOldFont);
}
pDC->SetTextColor(corForeOld);
pDC->SetBkColor(corBackOld);
return TRUE;
}
BOOL CDrawing::DrawRasterBlock(CDC* pDC, OgdcRasterBlock* pIBlock, OgdcDatasetRaster* pDatasetR, BITMAPINFO* pBitMapInfo)
{
OGDCASSERT(pIBlock != NULL);
if(pIBlock->m_nValidWidth < 2 || pIBlock->m_nValidHeight < 2)
{
return FALSE;
}
pBitMapInfo->bmiHeader.biWidth = pIBlock->m_nWidth;
pBitMapInfo->bmiHeader.biHeight = pIBlock->m_nValidHeight;
OgdcRect2D rcBlockBounds = pIBlock->m_rcBounds;
OgdcPoint2D pnts[2];
pnts[0] = rcBlockBounds.TopLeft();
pnts[1] = rcBlockBounds.BottomRight();
CPoint* pPoints = NULL;
GeoToDevice(pnts, 2, pPoints);
CRect rcBounds(pPoints[0], pPoints[1]);
delete[] pPoints;
pPoints = NULL;
rcBounds.NormalizeRect();
OgdcRasterBlock* pDemBlock = NULL;
BYTE* pByte = NULL;
// DEM或者GRID
if(pDatasetR->GetType() == OgdcDataset::Grid
&& pDatasetR->GetPixelFormat() != IPF_MONO)
{
pDemBlock = new OgdcRasterBlock;
// 象素信息 ImgBlockInfo
pDemBlock->m_nPixelFormat = IPF_RGB;
pDemBlock->m_nWidth = pIBlock->m_nWidth; // 宽度.
pDemBlock->m_nHeight = pIBlock->m_nHeight; // 高度.
pDemBlock->m_nWidthBytes = ((3*pIBlock->m_nWidth+3)/4)*4;
pDemBlock->m_nValidWidth = pIBlock->m_nValidWidth; // 有效宽度
pDemBlock->m_nValidHeight = pIBlock->m_nValidHeight; // 有效高度
pDemBlock->m_rcBounds = pIBlock->m_rcBounds; // 地理坐标参照.
pDemBlock->m_bInited = pIBlock->m_bInited; // 是否正在初始化,如是,将不装入数据.
OgdcInt nSize = pDemBlock->m_nWidthBytes * pDemBlock->m_nHeight;
pDemBlock->SetByteSize(nSize);
COLORREF clrPixel = 0;
OgdcDouble dZ = 0.0;
OgdcInt nValue = 0;
OgdcInt i = 0;
OgdcInt y = 0;
OgdcDouble dNoValue = OGDCROUND(pDatasetR->m_info.m_dNoValue);
OgdcColorTable *pColorTable = &pDatasetR->m_colorTable;
for(y = 0; y < pDemBlock->m_nValidHeight; y++)
{
OgdcInt x = 0;
for(x = 0; x < pDemBlock->m_nValidWidth; x++)
{
dZ = pIBlock->GetValue(x,y);
if(OGDCIS0(dZ - dNoValue))
{
clrPixel = RGB(255,255,255);
}
else
{
clrPixel = pColorTable->GetColor(dZ);
}
pDemBlock->SetPixel(x,y,clrPixel);
}
}
pBitMapInfo->bmiHeader.biBitCount = IPF_RGB;
pByte = (BYTE*)pDemBlock->GetBlockData();
}
else // 普通的Image
{
pByte = (BYTE*)pIBlock->GetBlockData();
}
int nOldBltMode = pDC->SetStretchBltMode(COLORONCOLOR);
BOOL bResult = StretchDIBits(pDC->m_hDC, rcBounds.left, rcBounds.bottom, rcBounds.Width(), -rcBounds.Height(),
0, 0, pIBlock->m_nValidWidth, pIBlock->m_nValidHeight, pByte, pBitMapInfo, DIB_RGB_COLORS, SRCCOPY);
pDC->SetStretchBltMode(nOldBltMode);
if(pDemBlock != NULL)
{
delete pDemBlock;
pDemBlock = NULL;
}
pByte = NULL;
return bResult;
}
BOOL CDrawing::DrawRaster(CDC* pDC, OgdcDatasetRaster* pDatasetR)
{
OGDCASSERT(!OGDCIS0(m_dCoordRatio) && !m_rcClient.IsRectEmpty());
OgdcRect2D rcDraw = pDatasetR->GetBounds();
if(!rcDraw.IntersectRect(m_rcViewBounds, rcDraw))
{
return FALSE;
}
BYTE *lp = new BYTE[sizeof(BITMAPINFOHEADER)+sizeof(RGBQUAD)*256];
if(lp == NULL)
{
return FALSE;
}
int i = 0;
BITMAPINFO *pBitMapInfo = (BITMAPINFO*)lp;
PixelFormat ePixelFormat = pDatasetR->GetPixelFormat();
pBitMapInfo->bmiHeader.biBitCount = BitCount(ePixelFormat);
if(pDatasetR->GetBandCount() <= 1)
{
if(pDatasetR->GetType() == OgdcDataset::Image && ePixelFormat <= IPF_BYTE)
{
OgdcColorset colorset = pDatasetR->m_info.m_colorset;
if(colorset.GetSize() == 0)
{
if(ePixelFormat == IPF_MONO)
{
pBitMapInfo->bmiColors[0].rgbBlue = 0;
pBitMapInfo->bmiColors[0].rgbGreen = 0;
pBitMapInfo->bmiColors[0].rgbRed = 0;
pBitMapInfo->bmiColors[0].rgbReserved = 0;
pBitMapInfo->bmiColors[1].rgbBlue = 255;
pBitMapInfo->bmiColors[1].rgbGreen = 255;
pBitMapInfo->bmiColors[1].rgbRed = 255;
pBitMapInfo->bmiColors[1].rgbReserved = 0;
}
else if(ePixelFormat == IPF_FBIT)
{
for(i = 0; i < 16; i++)
{
pBitMapInfo->bmiColors[i].rgbBlue = (16*i);
pBitMapInfo->bmiColors[i].rgbGreen = (16*i);
pBitMapInfo->bmiColors[i].rgbRed = (16*i);
pBitMapInfo->bmiColors[i].rgbReserved = 0;
}
}
else
{
for(i = 0; i < 256; i++)
{
pBitMapInfo->bmiColors[i].rgbBlue = i;
pBitMapInfo->bmiColors[i].rgbGreen = i;
pBitMapInfo->bmiColors[i].rgbRed = i;
pBitMapInfo->bmiColors[i].rgbReserved = 0;
}
}
}
else
{
for(i=0; i<256 && i<colorset.GetSize(); i++)
{
//! 因为读进来的r和b是反的，所以要再反一次。
OgdcColor color = colorset.GetAt(i);
pBitMapInfo->bmiColors[i].rgbRed = GetBValue(color);
pBitMapInfo->bmiColors[i].rgbGreen = GetGValue(color);
pBitMapInfo->bmiColors[i].rgbBlue = GetRValue(color);
pBitMapInfo->bmiColors[i].rgbReserved = 0;
}
}
}
else if(pDatasetR->GetType() == OgdcDataset::Grid)
{
pBitMapInfo->bmiHeader.biBitCount = 24;
if(pDatasetR->m_colorTable.m_Colorset.GetSize() <= 0)
{
pDatasetR->m_colorTable.CreateDefault();
}
}
}
else
{
OgdcArray<OgdcInt> aryBand;
aryBand.Add(0);
aryBand.Add(1);
aryBand.Add(pDatasetR->GetBandCount() > 2 ? 2:1);
ImgColorSpace nColorSpace = ICS_RGB;
pDatasetR->SetBandCombineMode(aryBand, nColorSpace);
pBitMapInfo->bmiHeader.biBitCount = 24;
}
pBitMapInfo->bmiHeader.biPlanes = 1;
pBitMapInfo->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
pBitMapInfo->bmiHeader.biCompression = BI_RGB;
pBitMapInfo->bmiHeader.biSizeImage = 0L;
pBitMapInfo->bmiHeader.biXPelsPerMeter = 0L;
pBitMapInfo->bmiHeader.biYPelsPerMeter = 0L;
pBitMapInfo->bmiHeader.biClrUsed = 0L;
pBitMapInfo->bmiHeader.biClrImportant = 0L;
CRect rcBlock;
CRgn *pClipRgn = NULL;
OgdcElemRegion *pDTRasterClipRegion = pDatasetR->m_pClipRgn;
if(pDTRasterClipRegion != NULL && !pDTRasterClipRegion->m_rcBounds.IsEmpty())
{
OgdcPoint2D *pPoint2Ds = pDTRasterClipRegion->m_points.GetData();
CPoint *pClipPoints = NULL;
if(GeoToDevice(pPoint2Ds, pDTRasterClipRegion->m_points.GetSize(), pClipPoints))
{
int nSubCount = pDTRasterClipRegion->m_polyCounts.GetSize();
int *lpPolyCount = pDTRasterClipRegion->m_polyCounts.GetData();
pClipRgn = new CRgn;
if(pClipRgn != NULL)
{
pClipRgn->CreatePolyPolygonRgn(pClipPoints, lpPolyCount, nSubCount, ALTERNATE);
pDC->SelectClipRgn(pClipRgn, RGN_AND);
}
delete[] pClipPoints;
pClipPoints = NULL;
}
}
OgdcSize szBMP(OGDCROUND(rcDraw.Width()/m_dCoordRatio), OGDCROUND(rcDraw.Height()/m_dCoordRatio));
OgdcRasterBlock* pImgBlock = pDatasetR->GetViewBlock(rcDraw, szBMP.cx, szBMP.cy);
if(pImgBlock != NULL)
{
DrawRasterBlock(pDC, pImgBlock, pDatasetR, pBitMapInfo);
delete pImgBlock;
pImgBlock = NULL;
}
pDatasetR->ReleaseAllBlocks();
if(lp != NULL)
{
delete[] lp;
lp = NULL;
}
if(pClipRgn != NULL)
{
pDC->SelectClipRgn(NULL, RGN_COPY);
delete pClipRgn;
pClipRgn = NULL;
}
return TRUE;
}
//! 平移。
void CDrawing::Pan(double dOffsetX, double dOffsetY)
{
OGDCASSERT(!OGDCIS0(m_dCoordRatio) && !m_rcClient.IsRectEmpty());
m_rcViewBounds.Offset(-dOffsetX, -dOffsetY);
}
BOOL CViewerWnd::HitTest(const OgdcPoint2D& pntHitTest, OgdcElemLine3D* pElemLine3D, double dTolerance)
{
OGDCASSERT(pElemLine3D != NULL);
OgdcRect2D rcBounds = pElemLine3D->GetBounds();
rcBounds.Inflate(dTolerance, dTolerance);
if (rcBounds.PtInRect(pntHitTest))
{
OgdcInt *plPolyCounts = pElemLine3D->m_polyCounts.GetData();
OgdcPoint3D *pPoints = pElemLine3D->m_points.GetData();
OgdcInt nSubCount = pElemLine3D->m_polyCounts.GetSize();
if(plPolyCounts == NULL || pPoints == NULL || nSubCount == 0)
{
return FALSE;
}
for(OgdcInt k=0; k<nSubCount; k++)
{
OgdcInt lCount = plPolyCounts[k];
if(pPoints==NULL || lCount<=1)
{
continue;
}
OgdcInt i = 0,j = 0;
OgdcDouble dDist = 0.0; // 给定点到折线上的点或线段的距离
OgdcDouble dA = 0.0,dB = 0.0;
OgdcDouble dC = 0.0; // 直线方程Ax+By+C=0的3参数
OgdcDouble dToleranceSquare = dTolerance*dTolerance;
OgdcDouble dpntx = 0.0;
OgdcDouble dpnty = 0.0;
dpntx=pntHitTest.x;
dpnty=pntHitTest.y;
dDist=(pPoints[lCount-1].x - dpntx) * (pPoints[lCount-1].x - dpntx)
+(pPoints[lCount-1].y - dpnty) * (pPoints[lCount-1].y - dpnty);
if(dDist<dToleranceSquare)
{
return TRUE;
}
for(j=0;j<5;j++)
{
i=j;
while(i<lCount-1)
{
if((pPoints[i].x>dpntx-dTolerance)&&(pPoints[i].x<dpntx+dTolerance))
// 利用x坐标排除一部分点;
{
dDist=(pPoints[i].x - dpntx) * (pPoints[i].x - dpntx)
+(pPoints[i].y - dpnty) * (pPoints[i].y - dpnty);
if(dDist<dToleranceSquare)
{
return TRUE;
}// 如果有一个点满足条件,则返回真;
}
// 判断点到直线的垂线是否在线段上,跳过垂线不在线段上的点
OgdcPoint2D startPoint;
OgdcPoint2D endPoint;
startPoint.x = pPoints[i].x;
startPoint.y = pPoints[i].y;
endPoint.x = pPoints[i+1].x;
endPoint.y = pPoints[i+1].y;
if(IsProjectOnLineSegment(pntHitTest,startPoint,endPoint))
{
dA=pPoints[i].y - pPoints[i+1].y;
dB=pPoints[i+1].x - pPoints[i].x;
if(OGDCIS0(dA) && OGDCIS0(dB))
{
dDist = (pntHitTest.x-pPoints[i].x) * (pntHitTest.x-pPoints[i].x)
+ (pntHitTest.y-pPoints[i].y) * (pntHitTest.y-pPoints[i].y);
}
else
{
dC=-((dA * pPoints[i].x) + (dB * pPoints[i].y));
dDist=(dA * pntHitTest.x) + (dB * pntHitTest.y )+ dC;
dDist=dDist * dDist;
dDist=dDist/((dA*dA) +(dB*dB));
}
if(dDist<dToleranceSquare)
{
return TRUE;
}
}
i=i+5;
}// endwhile;
}
pPoints += *plPolyCounts;
plPolyCounts++;
}
}
return FALSE;
}
BOOL CViewerWnd::HitTest(const OgdcPoint2D& pntHitTest, OgdcElemRegion* pElemRegion, double dTolerance)
{
OGDCASSERT(pElemRegion != NULL);
OgdcRect2D rcBounds = pElemRegion->GetBounds();
rcBounds.Inflate(dTolerance, dTolerance);
if (rcBounds.PtInRect(pntHitTest))
{
OgdcInt *plPolyCounts = pElemRegion->m_polyCounts.GetData();
OgdcPoint2D *pPoints = pElemRegion->m_points.GetData();
OgdcInt lCount = pElemRegion->m_polyCounts.GetSize();
if(plPolyCounts == NULL || pPoints == NULL || lCount == 0)
{
return FALSE;
}
OgdcDouble dInter=0;
OgdcInt nCount=0,counter = 0;
OgdcPoint2D* p1 = NULL;
OgdcPoint2D* p2 = NULL;
for (OgdcInt k=0; k < lCount; k++)
{
nCount = plPolyCounts[k];
///////////////////////////////////////////////////
p1 = pPoints;
for (OgdcInt i=1;i <= nCount; i++)
{
p2 = pPoints+(i%nCount);
if (OGDCIS0(pntHitTest.y - OGDCMIN(p1->y,p2->y)))
{
if (OGDCIS0(p1->y - p2->y))
{
if (( (pntHitTest.x < OGDCMAX(p1->x,p2->x) ) || OGDCEQUAL(pntHitTest.x,OGDCMAX(p1->x,p2->x)))
&& ( (pntHitTest.x > OGDCMIN(p1->x,p2->x) ) || OGDCEQUAL(pntHitTest.x,OGDCMIN(p1->x,p2->x))))
{
return TRUE;
}
}
else
{
if ((pntHitTest == (*p1)) || (pntHitTest == (*p2)))
{
return TRUE;
}
}
}
else if (pntHitTest.y > OGDCMIN(p1->y,p2->y))
{
//if (pntHitTest.y <= OGDCMAX(p1->y,p2->y))
if ( (pntHitTest.y < OGDCMAX(p1->y,p2->y)) || OGDCEQUAL(pntHitTest.y , OGDCMAX(p1->y,p2->y)) )
{
//if (pntHitTest.x <= OGDCMAX(p1->x,p2->x))
if ( (pntHitTest.x < OGDCMAX(p1->x,p2->x)) || OGDCEQUAL(pntHitTest.x , OGDCMAX(p1->x,p2->x)) )
{
if (!OGDCIS0(p1->y - p2->y))
{
if (OGDCIS0(p1->x - p2->x))
{
if (OGDCIS0(pntHitTest.x - p1->x))
{
return TRUE;
}
counter++;
}
else
{
dInter = (pntHitTest.y-p1->y)*(p2->x-p1->x)/(p2->y-p1->y)+(p1->x-pntHitTest.x);
dInter /= fabs((p2->x-p1->x));
if (fabs(dInter) < 1.0e-8)
{
return TRUE;
}
if (dInter > EP)
{
counter++;
}
}
}
}
}
}
p1 = p2;
}
///////////////////////////////////////////////////
pPoints += nCount;
}
if (counter % 2 == 0)
{
return FALSE;
}
return TRUE;
}
return FALSE;
}
