#include "StdAfx.h"
#include ".\stroke.h"

/////////////////////////////////////////////////////////////////////////////
// CStroke

CStroke::CStroke()
{
	// This empty constructor should be used by serialization only
}

CStroke::CStroke(UINT nPenWidth)
{
	m_nPenWidth = nPenWidth;
	m_rectBounding.SetRectEmpty();
}

BOOL CStroke::DrawStroke(CDC* pDC)
{
	//CPen penStroke;
	//if (!penStroke.CreatePen(PS_SOLID, m_nPenWidth, RGB(0,0,0)))
	//	return FALSE;
	//CPen* pOldPen = pDC->SelectObject(&penStroke);
	pDC->MoveTo(m_pointArray[0]);
	for (int i=1; i < m_pointArray.GetSize(); i++)
	{
		pDC->LineTo(m_pointArray[i]);
	}

	//pDC->SelectObject(pOldPen);
	return TRUE;
}

BOOL CStroke::DrawStroke(CDC* pDC, float fXFactor, float fYFactor)
{
	//CPen penStroke;
	//if (!penStroke.CreatePen(PS_SOLID, m_nPenWidth, RGB(0,0,0)))
	//	return FALSE;
	//CPen* pOldPen = pDC->SelectObject(&penStroke);
	pDC->MoveTo(
		(int)((float) m_pointArray[0].x * fXFactor),
		(int)((float) m_pointArray[0].y * fYFactor));
	for (int i=1; i < m_pointArray.GetSize(); i++)
	{
		pDC->LineTo(
		(int)((float) m_pointArray[i].x * fXFactor),
		(int)((float) m_pointArray[i].y * fYFactor));
	}

	//pDC->SelectObject(pOldPen);
	return TRUE;
}


void CStroke::FinishStroke()
{
	// Calculate the bounding rectangle.  It's needed for smart
	// repainting.
	if (m_pointArray.GetSize()==0)
	{
		m_rectBounding.SetRectEmpty();
		return;
	}
	CPoint pt = m_pointArray[0];
	m_rectBounding = CRect(pt.x, pt.y, pt.x, pt.y);

	for (int i=1; i < m_pointArray.GetSize(); i++)
	{
		// If the point lies outside of the accumulated bounding
		// rectangle, then inflate the bounding rect to include it.
		pt = m_pointArray[i];
		m_rectBounding.left     = min(m_rectBounding.left, pt.x);
		m_rectBounding.right    = max(m_rectBounding.right, pt.x);
		m_rectBounding.top      = max(m_rectBounding.top, pt.y);
		m_rectBounding.bottom   = min(m_rectBounding.bottom, pt.y);
	}

	// Add the pen width to the bounding rectangle.  This is necessary
	// to account for the width of the stroke when invalidating
	// the screen.
	m_rectBounding.InflateRect(CSize(m_nPenWidth, -(int)m_nPenWidth));
	return;
}