ugkglobalfunc.cpp

linux下一款GIS程序源码

/* UGKGlobalFunc.cpp */

#include "UGKGlobalFunc.h"
#include "KitSrc/ugk_environment.h"
#include "KitSrc/ugk_memopr.h"
#include "KitSrc/ugkglobal.h"
#include <qtextcodec.h> 
#include <stdlib.h>

QString ACSII2Unicode(const char *str)
{
    static QTextCodec *gbk_codec = QTextCodec::codecForName("GBK");
    QString retStr = gbk_codec->toUnicode(str);
    return retStr;
}


QString GB2Unicode( const QCString &localfileName )
{

    QTextCodec *gbk_codec = QTextCodec::codecForName("GB2312");
    QString retStr = gbk_codec->toUnicode(localfileName);
    
    return retStr;
}

QCString Unicod2GB( const QString &fileName )
{
    QTextCodec *gbk_codec = QTextCodec::codecForName("GB2312");
    QCString gbkstr=gbk_codec->fromUnicode(fileName);
    return gbkstr;
}


QColor ObtainColor( int IntColor)
{
    IntColor = IntColor & 0x00FFFFFF;
    int r,g,b;
    b = IntColor & 0x000000FF;
    IntColor=IntColor>>8;
    g = IntColor & 0x000000FF;
    IntColor=IntColor>>8;
    r = IntColor & 0x000000FF;
    
    QColor ret =QColor(r,g,b);
    return ret;
    
}


QString getBaseName(QString fullname)
{   
    int a = fullname.findRev('/');
    int b = fullname.findRev('.');
    QString tmp = fullname.left(b);
    QString ret = QString("  ")+tmp.right(b-a-1);
    return ret;
}



bool  LineLine(LineCoord ln1,LineCoord ln2)
{
    double k1,k2;
    double ax1,ay1,ax2,ay2; 
    double bx1,by1,bx2,by2;
    ax1 = ln1.start.x;
    ay1 = ln1.start.y;
    ax2 = ln1.end.x;
    ay2 = ln1.end.y;
    bx1 = ln2.start.x;
    by1 = ln2.start.y;
    bx2 = ln2.end.x;
    by2 = ln2.end.y;
    if( (ax2==ax1)&&(bx2==bx1) ) //两条都是垂直
	return FALSE;
    else if( (ax2==ax1)&&(bx2!=bx1) )
    {
	    if( (ax1>MIN(bx1,bx2))&&(ax1<MAX(bx1,bx2)) )
		return TRUE;
	    else
		return FALSE;

    }
    else if( (ax2!= ax1)&&(bx2==bx1) )
    {
	    if( (bx1>MIN(ax1,ax2))&&(bx1<MAX(ax1,ax2)) )
		return TRUE;
	    else
		return FALSE;
    }
    else
    {
	    k1 = 1.0*(ay2-ay1)/(ax2-ax1);
	    k2 = 1.0*(by2-by1)/(bx2-bx1);
	    if(k1==k2)
		return FALSE;
	    else
	    {
		double px,py;
		px = (by1-bx1*k2+ax1*k1-ay1)/(k1-k2);
		py = k1*(px-ax1)+ay1;
		if( (px>MIN(ax1,ax2))&&(px<MAX(ax1,ax2)) )
		    return TRUE;
		else
		    return FALSE;
	    }
    }
}

bool  LineRect(LineCoord ln,QRect rect)
{
    int x1,x2,y1,y2;
    x1 = rect.left();
    x2 = rect.right();
    y1 = rect.top();
    y2 = rect.bottom();
    LineCoord left,top,right,bottom;
    left.start.x =x1;
    left.start.y = y1;
    left.end.x = x1;
    left.end.y = y2;
    top.start.x = x1;
    top.start.y = y1;
    top.end.x = x2;
    top.end.y = y1;
    right.start.x = x2;
    right.start.y = y1;
    right.end.x = x2;
    right.end.x = y2;
    bottom.start.x = x1;
    bottom.start.y = y2;
    bottom.end.x = x2;
    bottom.end.y = y2;
    
    int points=0;
    //先检查是否在内部
    if( (ln.start.x>x1)&&(ln.start.x<x2)&&
       (ln.start.y>y1)&&(ln.start.y<y2) )
	points++;

    if( (ln.end.x>x1)&&(ln.end.x<x2)&&
	(ln.end.y>y1)&&(ln.end.y<y2) )
	points++;

    if( LineLine(ln,left))
	points++;

    if( LineLine(ln,top))
	points++;


    if( LineLine(ln,right))
	points++;

 
    if( LineLine(ln,bottom))
	points++;

    if(points>=2)
	return TRUE;
    else
	return FALSE;
}


void  mountUdisk()
{
#ifdef SITSANGAPP
    system("mount -t vfat -o iocharset=cp936 /dev/sda1  /Udisk"); 
#endif
}

void  umountUdisk()
{
#ifdef SITSANGAPP
    system("umount /dev/sda1"); 
#endif    
}