graph.cpp

Read nmea file and send to com port. you can easly simulate the gps application

//Graph.cpp - Version 3.0 (Brian Convery, May, 2001)

#include "stdafx.h"
#include "afxtempl.h"
//#include "GraphLegend.h"
#include "math.h"
#include "Graph.h"
//#include "GraphDataColor.h"
//#include "GraphPieLabel.h"	//for pie labels

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

/////////////////////////////////////////////////////////////////////////////
// CGraph

CGraph::CGraph()
{
	graphDataSet = new CObList();
	seriesSize = 0;

	graphAlignment = VERTICAL_ALIGN;  

	graphType = 0;

	graphQuadType = 1;
	quadSetManually = FALSE;

	m_gMinDataSet.SetPosition(1000, 1000);
	m_gMaxDataSet.SetPosition(0,0);
}

CGraph::CGraph(int type)
{
	graphDataSet = new CObList();
	seriesSize = 0;

	graphAlignment = VERTICAL_ALIGN;  

	graphType = type;

	graphQuadType = 1;
	if(type != BAR_GRAPH)
		quadSetManually = TRUE;
	else
		quadSetManually = FALSE;
}

CGraph::~CGraph()
{
	POSITION pos;
	CGraphDataSet * pSeries;

	for( pos = graphDataSet->GetHeadPosition(); pos != NULL; )
	{
		pSeries = (CGraphDataSet*) graphDataSet->GetNext( pos );
		graphDataSet->RemoveAt(pos);
		delete pSeries;
	}

	graphDataSet->RemoveAll();
	delete graphDataSet;	
}

/////////////////////////////////////////////////////////////////////////////
// CGraph message handlers

void CGraph::SetGraphType(int gType)
{
	graphType = gType;
}

void CGraph::DrawGraph(CDC* pDC)
{
	CWnd* graphWnd = pDC->GetWindow();
	CRect graphRect;
	graphWnd->GetClientRect(&graphRect);
	TEXTMETRIC	tm;

	//reset graph to be clear background
	COLORREF backColor;
	backColor = RGB(255,255,255);  //replace with desired background color
	CBrush backBrush (backColor);
	CBrush* pOldBackBrush;
	pOldBackBrush = pDC->SelectObject(&backBrush);
	pDC->Rectangle(0, 0, graphRect.Width(), graphRect.Height());
	pDC->SelectObject(pOldBackBrush);

	maxHeight = graphRect.Height() - 20;  //for frame window and status bar
	maxWidth = graphRect.Width() - 5;  //for frame window

	//draw graph title
	CFont titleFont;
	int tFontSize = 24;
	while((graphTitle.GetLength() * (tFontSize / 2)) > maxWidth)
	{
		tFontSize -= 2;
	}
	titleFont.CreateFont(tFontSize, 0, 0, 0, 700, FALSE, FALSE, 0,
		ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
		DEFAULT_QUALITY, DEFAULT_PITCH | FF_ROMAN,"Arial");
	CFont* pOldFont = (CFont*) pDC->SelectObject(&titleFont);

	pDC->GetTextMetrics(&tm);

	int charWidth = tm.tmAveCharWidth;
	//next line is centered....trust me !!
	pDC->TextOut((graphRect.Width() / 2) - ((graphTitle.GetLength() / 2) * charWidth),
				10, graphTitle);
	pDC->SelectObject(pOldFont);

	if((!quadSetManually) && (graphType == BAR_GRAPH))
	{
		//computer number of quadrants needed based on data
		POSITION pos;
		pos = graphDataSet->GetHeadPosition();
		CGraphDataSet* tmpSeries;
		int minXValue = 0;
		int minYValue = 0;
		for(int x = 1; x <= graphDataSet->GetCount(); x++)
		{
			tmpSeries = (CGraphDataSet*)graphDataSet->GetNext(pos);
			for(int s = 0; s < seriesSize; s++)
			{
				//to allow scalability (height may be less than tickRange)
				int curXValue = tmpSeries->GetXData();
				int curYValue = tmpSeries->GetYData();
				if(curXValue < minXValue)
					minXValue = curXValue;
				if(curYValue < minYValue)
					minYValue = curYValue;
			}
		}
		graphQuadType = 1;
		if((minXValue < 0) && (minYValue < 0))
			graphQuadType = 4;
		if((minXValue < 0) && (minYValue >= 0))
			graphQuadType = 2;
		if((minXValue >= 0) && (minYValue < 0))
			graphQuadType = 3;
	}

	if((graphType != 2) && (graphType != 32))  //pie & 3d pie
	{
		inRedraw = FALSE;
	}

	//draw series data and labels
	DrawDataSet(pDC);

	//lines below are commented for doing redraw.  If you
	//want the axis lines on top of the other graph elements
	//uncomment this functionality...I may add it back later
	//but there were some bugs doing it this way.

	//redraw axis lines in case graph elements overwrote the axis lines
//	if((graphType != 2) && (graphType != 32) && (graphQuadType > 1))  //pie & 3d pie
//	{
//		inRedraw = TRUE;
		//draw axis lines
//		DrawAxis(pDC);
//	}
}

void CGraph::AddDataSet(CGraphDataSet* dataSet)
{
	if ( dataSet->GetXData() > m_gMaxDataSet.GetXData()) {
		m_gMaxDataSet.SetXPosition(dataSet->GetXData());
	}
	if ( dataSet->GetYData() > m_gMaxDataSet.GetYData()) {
		m_gMaxDataSet.SetYPosition(dataSet->GetYData());
	}
	if ( dataSet->GetXData() < m_gMinDataSet.GetXData()) {
		m_gMinDataSet.SetXPosition(dataSet->GetXData());
	}
	if ( dataSet->GetYData() < m_gMinDataSet.GetYData()) {
		m_gMinDataSet.SetYPosition(dataSet->GetYData());
	}

	graphDataSet->AddTail((CObList *)dataSet);
}

void CGraph::SetGraphTitle(CString title)
{
	graphTitle = title;
}

void CGraph::DrawDataSet(CDC* pDC)
{
	//points will now plot as ((value * scale) + apex point)
	COLORREF barColor;
	barColor = BLACK;
	CBrush brush (barColor);
	CBrush* pOldBrush;
	pOldBrush = pDC->SelectObject(&brush);

	POSITION pos;
	CGraphDataSet* tmpSeries;
	for(pos = graphDataSet->GetHeadPosition(); pos != NULL; graphDataSet->GetNext(pos))
	{
//		tmpSeries = (CGraphDataSet*)graphDataSet->GetAt(pos);

		//multiply each value by 1.00 to force result into a double value, and therefore
		//make it more accurate in it's plot location.
//		tickXLocation = (int)(tmpSeries->GetXDataValue());
//		tickYLocation = (int)(tmpSeries->GetYDataValue());

		//draw ellipse...
//		pDC->Ellipse(tickXLocation - 3, tickYLocation - 3,
//			tickXLocation + 3, tickYLocation + 3);

	}
	pDC->SelectObject(pOldBrush);

}

void CGraph::RemoveDataSet()
{
	POSITION pos;
	CGraphDataSet* pSeries;
	pos = graphDataSet->GetHeadPosition();
	while(pos != NULL)
	{
		pSeries = (CGraphDataSet*) graphDataSet->GetAt( pos );
		graphDataSet->RemoveAt(pos);
		delete pSeries;
	}

	graphDataSet->RemoveAll();
}