drawcircle_rockey.cpp

此为本书的配套光盘.本书不但由浅入深地讲解了软件保护技术

#include "stdafx.h"
#include "DrawCircle.h"

#include "DrawCircleDoc.h"
#include "DrawCircleView.h"
#include "DrawParamDlg.h"
#include "DrawMethodDlg.h"

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

WORD  p1=0xc44c,p2=0xc8f8,p3=0x0799,p4=0xc43b;
DWORD lp1,lp2;
WORD  handle[16];
BYTE  buffer[1024];

void CDrawCircleView::DrawCircleMidPoint_Rockey(CDC *pDC, int iCenterX, int iCenterY, int r)
{
	int x=0;
	int y=r;
	int p=1-r;
	int seed=0;

	short p1,p2,p3,p4;

	CirclePlotPoints(pDC,iCenterX,iCenterY,x,y);

	TRACE("Hardware\n");
	m_lpCircleBuf[0].x = x;
	m_lpCircleBuf[0].y = y;
	m_nPointCount=1;

	while(x<y)
	{
		p1 = p;
		p2 = x;
		p3 = y;
		p4 = seed;

		if(!RunRockey((WORD&)p1,(WORD&)p2,(WORD&)p3,(WORD&)p4))
		{
		//	AfxMessageBox("运行时错误");
			break;
		}		

		if(p<0)
		{
			p = p1;			
		}		
		else
		{
			p = p2;
			y--;
		}
		x++;
		TRACE("%d,(%d,%d);",p,x,y);
		CirclePlotPoints(pDC,iCenterX,iCenterY,x,y);
		
		m_lpCircleBuf[m_nPointCount].x = x;
		m_lpCircleBuf[m_nPointCount].y = y;
		m_nPointCount++;
	}
	TRACE("\n");
}

BOOL CDrawCircleView::RunRockey(WORD &A, WORD &B, WORD &C, WORD &D)
{
	WORD retcode;

	lp1 = 10;
	retcode = Rockey(RY_CALCULATE1,&handle[0],&lp1,&lp2,&A,&B,&C,&D,buffer);

	if(retcode)
		return FALSE;
	else
		return TRUE;
}