A 2D data visualisation class

// DialogWithGraph.cpp : implementation file
//

#include "stdafx.h"
#include "test_grafix.h"
#include "DialogWithGraph.h"

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

/////////////////////////////////////////////////////////////////////////////
// CDialogWithGraph dialog


CDialogWithGraph::CDialogWithGraph(CWnd* pParent /*=NULL*/)
	: CDialog(CDialogWithGraph::IDD, pParent)
{
	//{{AFX_DATA_INIT(CDialogWithGraph)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
    graph_count = 0;
}


void CDialogWithGraph::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CDialogWithGraph)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CDialogWithGraph, CDialog)
	//{{AFX_MSG_MAP(CDialogWithGraph)
	ON_BN_CLICKED(IDC_NEW_GRAPH_DLG, OnNewGraphDlg)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDialogWithGraph message handlers

#define POINTS_X_RANGE	100

BOOL CDialogWithGraph::OnInitDialog() 
{
    CDialog::OnInitDialog();
    
    CRect rect;
    GetClientRect(rect);
    rect.bottom -= 60;
    graph_wnd.Create(_T("Graph Window"), rect, this, 11000, WS_CHILD | WS_VISIBLE, TRUE);

    graph_wnd.SetAxisProps(_T("X-Axis"), _T(""), 4, GRAPH_X_AXIS, TRUE);
    graph_wnd.SetAxisProps(_T("Y-Axis"), _T(""), 4, GRAPH_Y_AXIS, TRUE);
    graph_wnd.SetGraphWorldCoords(0, POINTS_X_RANGE, -1, 1, TRUE);

    return TRUE;  // return TRUE unless you set the focus to a control
	          // EXCEPTION: OCX Property Pages should return FALSE
}

extern COLORREF DefaultGraphColors[];

void CDialogWithGraph::OnNewGraphDlg() 
{
    CString title;
    title.Format(_T("New graph - %d"), graph_count);
    int c = graph_wnd.AddGraph(DefaultGraphColors[graph_count], title);
    if (c != -1)
    {
	//add new sin graph
	double x, y;
	for (int i=0; i<=POINTS_X_RANGE; i++)
	{
	    x = i;
	    y = sin((i*3.14*(graph_count+1))/POINTS_X_RANGE);
	    graph_wnd.AddPoint(c, x, y, TRUE);
	};
    };
    graph_count += 1;
}