//*******************************************************************************
void CBCGPLinearGaugeImpl::OnDrawPointer(CBCGPGraphicsManager* pGM,
const CBCGPPointsArray& arPoints,
const CBCGPPointsArray& arShadowPoints,
int nIndex)
{
ASSERT_VALID(pGM);
CBCGPLinearGaugePointer* pData = DYNAMIC_DOWNCAST(CBCGPLinearGaugePointer, m_arData[nIndex]);
ASSERT_VALID(pData);
const int nCount = (int)arPoints.GetSize ();
const double scaleRatio = GetScaleRatioMid();
const CBCGPBrush& brFill = pData->GetFillBrush().IsEmpty() ? m_Colors.m_brPointerFill : pData->GetFillBrush();
const CBCGPBrush& brFrame = pData->GetOutlineBrush().IsEmpty() ? m_Colors.m_brPointerOutline : pData->GetOutlineBrush();
if (pData->GetStyle() == CBCGPLinearGaugePointer::BCGP_GAUGE_NEEDLE_CIRCLE)
{
ASSERT(nCount == 4);
if (pGM->IsSupported(BCGP_GRAPHICS_MANAGER_COLOR_OPACITY) &&
arShadowPoints.GetSize() == 4)
{
CBCGPRect rectShadow;
CreateRectFromArray(arShadowPoints, rectShadow);
pGM->FillEllipse(rectShadow, m_brShadow);
}
CBCGPRect rect;
CreateRectFromArray(arPoints, rect);
pGM->FillEllipse(rect, brFill);
pGM->DrawEllipse(rect, brFrame, scaleRatio);
}
else
{
if (pGM->IsSupported(BCGP_GRAPHICS_MANAGER_COLOR_OPACITY) &&
arShadowPoints.GetSize() > 2)
{
pGM->FillGeometry(CBCGPPolygonGeometry(arShadowPoints), m_brShadow);
}
if (nCount > 2)
{
CBCGPPolygonGeometry rgn(arPoints);
pGM->FillGeometry(rgn, brFill);
}
for (int i = 0; i < nCount - 1; i++)
{
pGM->DrawLine(arPoints[i], arPoints[i + 1], brFrame, scaleRatio);
}
if (nCount > 2)
{
pGM->DrawLine(arPoints[nCount - 1], arPoints[0], brFrame, scaleRatio);
}
}
}
BOOL PointInPolygon(const CBCGPPointsArray& arPoly, const CBCGPPoint& pt)
{
int nSize = (int)arPoly.GetSize ();
if (nSize < 3)
{
return FALSE;
}
const CBCGPPoint* pData = arPoly.GetData();
int count = 0;
int current = 0;
int next = 1;
while(next < nSize)
{
BOOL b = (pData[next].y <= pt.y);
if (pData[current].y <= pt.y)
{
b = !b;
}
if (b)
{
if(((pData[next].x - pData[current].x) * (pt.y - pData[current].y) /
(pData[next].y - pData[current].y)) <= (pt.x - pData[current].x))
{
count++;
}
}
current++;
next++;
}
if (pData[0] != pData[nSize - 1])
{
current = nSize - 1;
next = 0;
BOOL b = (pData[next].y <= pt.y);
if (pData[current].y <= pt.y)
{
b = !b;
}
if (b)
{
if(((pData[next].x - pData[current].x) * (pt.y - pData[current].y) /
(pData[next].y - pData[current].y)) <= (pt.x - pData[current].x))
{
count++;
}
}
}
return (count & 1) ? TRUE : FALSE;
}
//****************************************************************************************
void CBCGPEngine3D::DrawPolygon(const CBCGPPointsArray& arPoints, const CBCGPBrush& brush, double dblLineWidth)
{
int nNumPoints = (int)arPoints.GetSize();
if (m_pDefaultGM == NULL || nNumPoints == 0)
{
return;
}
m_pDefaultGM->DrawLines(arPoints, brush, dblLineWidth);
}
int FindPointInPolygon(const CBCGPPointsArray& arPoly, const CBCGPPoint& pt)
{
int nSize = (int)arPoly.GetSize ();
if (nSize == 0)
{
return -1;
}
int index = -1;
const CBCGPPoint* pData = arPoly.GetData();
for (int i = 0; i < nSize; i++)
{
if (pData[i].x == pt.x && pData[i].y == pt.y)
{
index = i;
break;
}
}
return index;
}
//****************************************************************************************
void CBCGPEngine3D::FillPolygon(const CBCGPPointsArray& arPoints, const CBCGPBrush& brush)
{
int nNumPoints = (int)arPoints.GetSize();
if (m_pDefaultGM == NULL || nNumPoints == 0)
{
return;
}
ASSERT_VALID(m_pDefaultGM);
if (m_pDefaultGM->GetType() == CBCGPGraphicsManager::BCGP_GRAPHICS_MANAGER_GDI)
{
CBCGPPolygonGeometry g(arPoints);
g.SetTemporary();
m_pDefaultGM->FillGeometry(g, brush);
}
else
{
LPPOINT arPointsGDI = new POINT[nNumPoints];
for (int i = 0; i < nNumPoints; i++)
{
arPointsGDI[i] = CPoint(bcg_round(arPoints[i].x), bcg_round(arPoints[i].y));
}
HRGN hrgn = ::CreatePolygonRgn(arPointsGDI, nNumPoints, ALTERNATE);
UINT nBytesCount = ::GetRegionData(hrgn, sizeof(RGNDATA), NULL);
if (nBytesCount == 0)
{
delete [] arPointsGDI;
return;
}
LPBYTE lpRgnData = new BYTE[nBytesCount];
ZeroMemory( lpRgnData, nBytesCount);
if (::GetRegionData(hrgn, nBytesCount, (LPRGNDATA)lpRgnData) != nBytesCount)
{
delete [] arPointsGDI;
delete [] lpRgnData;
return;
}
LPRGNDATA pData = (LPRGNDATA)lpRgnData;
LPRECT points = (LPRECT)pData->Buffer;
for (DWORD k = 0; k < pData->rdh.nCount; k++)
{
m_pDefaultGM->FillRectangle(CBCGPRect(points[k]), brush);
}
delete [] arPointsGDI;
delete [] lpRgnData;
DeleteObject(hrgn);
}
}
//*******************************************************************************
CBCGPGeometry* CBCGPChartInterLineColoringEffect::CreateGeometry(const CBCGPPointsArray& arOrgPoints, const CBCGPRect& rectBounds,
BCGPChartFormatSeries::ChartCurveType curveType, BOOL bClip)
{
CBCGPChartAxis* pXAxis = m_pSeries1->GetRelatedAxis(CBCGPChartSeries::AI_X);
ASSERT_VALID(pXAxis);
BOOL bIsVertical = pXAxis->IsVertical();
CBCGPGeometry* pGeometry = NULL;
CBCGPPointsArray arPoints;
arPoints.Append(arOrgPoints);
CBCGPPoint ptStart = arPoints[0];
CBCGPPoint ptEnd = arPoints[arPoints.GetSize() - 1];
CBCGPPoint ptClipCorrectionStart = ptStart;
CBCGPPoint ptClipCorrectionEnd = ptEnd;
if (bIsVertical)
{
if (bClip)
{
if (pXAxis->m_bReverseOrder)
{
ptClipCorrectionStart.y -= 1.;
ptClipCorrectionEnd.y += 1.;
}
else
{
ptClipCorrectionStart.y += 1.;
ptClipCorrectionEnd.y -= 1.;
}
ptStart = CBCGPPoint(rectBounds.left, ptClipCorrectionStart.y);
ptEnd = CBCGPPoint(rectBounds.left, ptClipCorrectionEnd.y);
}
else
{
ptStart = CBCGPPoint(rectBounds.left, ptStart.y);
ptEnd = CBCGPPoint(rectBounds.left, ptEnd.y);
}
}
else
{
if (bClip)
{
if (pXAxis->m_bReverseOrder)
{
ptClipCorrectionStart.x += 1.;
ptClipCorrectionEnd.x -= 1.;
}
else
{
ptClipCorrectionStart.x -= 1.;
ptClipCorrectionEnd.x += 1.;
}
ptStart = CBCGPPoint(ptClipCorrectionStart.x, rectBounds.bottom);
ptEnd = CBCGPPoint(ptClipCorrectionEnd.x, rectBounds.bottom);
}
else
{
ptStart = CBCGPPoint(ptStart.x, rectBounds.bottom);
ptEnd = CBCGPPoint(ptEnd.x, rectBounds.bottom);
}
}
if (curveType == BCGPChartFormatSeries::CCT_SPLINE || curveType == BCGPChartFormatSeries::CCT_SPLINE_HERMITE)
{
CBCGPSplineGeometry::BCGP_SPLINE_TYPE splineType = CBCGPSplineGeometry::BCGP_SPLINE_TYPE_KB;
if (curveType == BCGPChartFormatSeries::CCT_SPLINE_HERMITE)
{
splineType = CBCGPSplineGeometry::BCGP_SPLINE_TYPE_HERMITE;
}
CBCGPComplexGeometry* pComplex = new CBCGPComplexGeometry() ;
CBCGPSplineGeometry geometryTop(arOrgPoints, splineType, FALSE);
pComplex->AddPoints(geometryTop.GetPoints(), CBCGPPolygonGeometry::BCGP_CURVE_TYPE_BEZIER);
if (bClip)
{
pComplex->AddLine(ptClipCorrectionEnd);
}
pComplex->AddLine(ptEnd);
pComplex->AddLine(ptStart);
if (bClip)
{
pComplex->AddLine(ptClipCorrectionStart);
}
pComplex->SetClosed(TRUE);
pGeometry = pComplex;
}
else
{
if (bClip)
{
arPoints.Add(ptClipCorrectionEnd);
}
arPoints.Add(ptEnd);
arPoints.Add(ptStart);
if (bClip)
{
arPoints.Add(ptClipCorrectionStart);
}
pGeometry = new CBCGPPolygonGeometry(arPoints);
}
return pGeometry;
}
BOOL BCGPCalculateIntersectPoint(const CBCGPPointsArray& arPoly1, const CBCGPPointsArray& arPoly2,
CBCGPPoint& ptIntersect)
{
int nPoly1Size = (int)arPoly1.GetSize();
int nPoly2Size = (int)arPoly2.GetSize();
if (nPoly1Size == 0 || nPoly2Size == 0)
{
return FALSE;
}
const CBCGPPoint* pData1 = arPoly1.GetData ();
const CBCGPPoint* pData2 = arPoly2.GetData ();
CBCGPPointsArray arPolyRes;
arPolyRes.SetSize (0, nPoly1Size + nPoly2Size);
int i = 0;
int j = 0;
// 1. find all points from arPoly1F in arPoly2F
int nSize1 = 0;
for (i = 0; i < nPoly1Size; i++)
{
const CBCGPPoint& pt = pData1[i];
if (PointInPolygon (arPoly2, pt))
{
if (AddPointInPolygon(arPolyRes, pt))
{
nSize1++;
}
}
}
// all points in arPoly2F
if (nSize1 != nPoly1Size)
{
// 2. find all points from arPoly2F in arPoly1F
int nSize2 = 0;
for (i = 0; i < nPoly2Size; i++)
{
const CBCGPPoint& pt = pData2[i];
if (PointInPolygon (arPoly1, pt))
{
if (AddPointInPolygon(arPolyRes, pt))
{
nSize2++;
}
}
}
// all points in arPoly1F
if (nSize1 != 0 || nSize2 != nPoly2Size)
{
// 3. find all intersection points arPoly1F and arPoly2F
for (i = 0; i < nPoly1Size; i++)
{
const CBCGPPoint& ptStart1 = pData1[i];
const CBCGPPoint& ptEnd1 = pData1[(i + 1) % nPoly1Size];
for (j = 0; j < nPoly2Size; j++)
{
const CBCGPPoint& ptStart2 = pData2[j];
const CBCGPPoint& ptEnd2 = pData2[(j + 1) % nPoly2Size];
if (bcgp_classify_point2D(ptStart1, ptEnd1, ptStart2) !=
bcgp_classify_point2D(ptStart1, ptEnd1, ptEnd2))
{
CBCGPPoint pt;
if (BCGPIntersectPoints2D (ptStart1, ptEnd1, ptStart2, ptEnd2, pt))
{
AddPointInPolygon(arPolyRes, pt);
}
}
}
}
}
}
int nSize = (int)arPolyRes.GetSize();
if (nSize < 2)
{
return FALSE;
}
ptIntersect.x = 0.0;
ptIntersect.y = 0.0;
for (i = 0; i < nSize; i++)
{
ptIntersect += arPolyRes[i];
}
ptIntersect /= nSize;
return TRUE;
}