GIS编程

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Visual C++

Text.cpp：源码内容
							// Text.cpp: implementation of the CText class.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "Draw.h"
#include "Text.h"
#include "math.h"
#include "DrawDoc.h"
//#include "DrawDoc.cpp"
#define pi 3.1415926
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
extern  IsRectCross(float minx,float miny,float maxx,float maxy);
CText::CText();
//CGraphPara* p_GraphPara;
//float xMinScreen,yMinScreen,xMaxScreen,yMaxScreen;
/*BOOL CText::IsRectCross(float minx,float miny,float maxx,float maxy)
{
	if(minx>xMaxScreen||maxx<xMinScreen||miny>yMaxScreen||maxy<yMinScreen)
		return FALSE;  //如两个矩形不相交
	else
		return TRUE;
}*/
void CText::Draw(CDC* pDC,int m_DrawMode,int m_DrawModel,short BackColor)
{
	if(b_Delete)
		return ;
	float minx,miny,maxx,maxy;
	GetRect(&minx,&miny,&maxx,&maxy);//得到边界矩形
	if(!IsRectCross(minx,miny,maxx,maxy))//如果边界矩形不与屏幕窗口相交
		return;
	short ColorPen=m_ColorPen;
	if(m_DrawModel==2)
		ColorPen=BackColor;
	CFont cjcf;
	int hight,wide,cc1,cc2,cd,angg;
	unsigned char c1,c2;
	float x1,y1,angl;
	char bz[4];
	const char *ls1;
	if(m_DrawMode==0)
		pDC->SetROP2(R2_COPYPEN);
	else if(m_DrawMode==1)
		pDC->SetROP2(R2_NOT);
	pDC->SetBkMode(TRANSPARENT);
	hight=DLtoVL(m_TextHeight);
	angl=(float)(m_Angle1*pi/180);
	if(hight<3||hight>200)
		return;
	x1=m_StartX-m_TextHeight*(float)sin(angl);
	y1=m_StartY+m_TextHeight*(float)cos(angl);
	angg=(int)(m_Angle2*10);
	wide=DLtoVL(m_TextWide);
	DPtoVP(x1,y1,&cc1,&cc2);
	cjcf.CreateFont(hight,wide,angg,0,50,0,0,0,255,OUT_TT_PRECIS,CLIP_CHARACTER_PRECIS,DEFAULT_QUALITY,FIXED_PITCH,"cjc");
	CFont* cjcbakf=pDC->SelectObject(&cjcf);
	pDC->SetBkMode(TRANSPARENT);
	CGraphPara m_GraphPara;
    CGraphPara *p_GraphPara;
	p_GraphPara=&m_GraphPara;
	pDC->SetTextColor(p_GraphPara->GetColor(ColorPen));
	ls1=(const char *)c_Text;
	cd=strlen(ls1);
	while(cd>0)
	{
		c1=*ls1;
		c2=*(ls1+1);
		if(c1>c2&&c2>127)
		{
			strncpy(bz,ls1,2);
			bz[2]=0;
			ls1=ls1+2;
			pDC->TextOut(cc1,cc2,bz);
			cd=cd-2;
            x1=x1+(m_TextWide*2+m_OffWide)*(float)cos(angl);
            y1=y1+(m_TextWide*2+m_OffWide)*(float)sin(angl);
			DPtoVP(x1,y1,&cc1,&cc2);
		}
		else
		{
			strncpy(bz,ls1,1);
			bz[1]=0;
			ls1++;
			pDC->TextOut(cc1,cc2,bz);
            cd=cd-1;
            x1=x1+(m_TextWide*2+m_OffWide/2)*(float)cos(angl);
            y1=y1+(m_TextWide*2+m_OffWide/2)*(float)sin(angl);
			DPtoVP(x1,y1,&cc1,&cc2);
		}
	}
	pDC->SelectObject(cjcbakf);
}
void CText::GetRect(float *minX,float *minY,float* maxX,float* maxY )
{
	float x[4],y[4];
	double ang=pi*m_Angle1/180;
	x[0]=m_StartX;
	y[0]=m_StartY;
	x[1]=m_StartX+(float)((m_TextWide+m_OffWide)*m_TextLong*cos(ang));
	y[1]=m_StartY+(float)((m_TextWide+m_OffWide)*m_TextLong*sin(ang));
	x[2]=x[1]-(float)(sin(ang)*m_TextHeight);
	y[2]=y[1]+(float)(cos(ang)*m_TextHeight);
	x[3]=m_StartX-(float)(sin(ang)*m_TextHeight);
	y[3]=m_StartY-(float)(cos(ang)*m_TextHeight);
	*minX=m_StartX;
	*minY=m_StartY;
	*maxX=m_StartX;
	*maxY=m_StartY;
	for(int i=1;i<4;i++)  //比较得到最小和最大坐标值
	{
		if(*minX>x[i]) *minX=x[i];
		if(*minY>y[i]) *minY=y[i];
		if(*maxX<x[i]) *maxX=x[i];
		if(*maxY<y[i]) *maxY=y[i];
	}
}
BOOL CText::IsPoint(float x,float y,float j1,float blc)
{
	PointStruct XY[4];
	float x1,y1,x2,y2;
	if(b_Delete)
		return FALSE;
	GetRect(&x1,&y1,&x2,&y2);
	if(!(x>=x1&&x<=x2&&y>=y1&&y<=y2))
		return FALSE;
	float ang=(float)pi*m_Angle1/180;
	XY[0].x=m_StartX;
	XY[0].y=m_StartY;
	XY[1].x=m_StartX+(float)((m_TextWide+m_OffWide)*m_TextLong*cos(ang));
	XY[1].y=m_StartY+(float)((m_TextWide+m_OffWide)*m_TextLong*sin(ang));
	XY[2].x=XY[1].x-(float)(sin(ang)*m_TextHeight);
	XY[2].y=XY[1].y+(float)(cos(ang)*m_TextHeight);
	XY[3].x=m_StartX-(float)(sin(ang)*m_TextHeight);
	XY[3].y=m_StartY+(float)(cos(ang)*m_TextHeight);
	if(PointRgn(x,y,4,XY,blc))
		return TRUE;
	return FALSE;
}
void CText::Move(float x_Move,float y_Move)
{
	m_StartX+=x_Move;
	m_StartY+=y_Move;
}
void CText::Rotate(float baseX,float baseY,float angle)
{
	RotatePoint(baseX,baseY,angle,&this->m_StartX,&this->m_StartY);
	RotatePoint(baseX,baseY,angle,&this->m_EndX,&this->m_EndY);
	m_Angle1+=(float)(angle*180/pi);
	m_Angle2+=(float)(angle*180/pi);
}
void CText::Init(short ColorPen,short ColorBrush,float LineWide,short LineType,short Layer,
				 float StartX,float StartY,float Angle1,float Angle2,float TextHeight,
				 float TextWide,float OffWide,int TextLong,CString Text)
{
	m_ColorPen=ColorPen;
	m_ColorBrush=ColorBrush;
	m_LineWide=LineWide;
	m_LineType=LineType;
	m_Layer=Layer;
	m_StartX=StartX;
	m_StartY=StartY;
	m_Angle1=Angle1;
	m_Angle2=Angle2;
	m_TextHeight=TextHeight;
	m_TextWide=TextWide;
	m_OffWide=OffWide;
	m_TextLong=TextLong;
	c_Text=Text;
}
CText::~CText()
{
}

						