高手帮个啊忙啊

chjh_721 发表于 2006-9-2 14:09:00

本人第一次编的程序,出现了连接错误,想了几天得不到答案,高手帮忙啊,谢了,急!!!!!!!!!!!!
#include "math.h" //#include"gept2dar.h" #include"geline2d.h" //#include"acarray.h" #include"gepnt2d.h" #include"gelnsg2d.h"
 //以下为计算凸多边形面积方法   double areaofchimb(AcGePoint2dArray&ptarr) { AcGePoint2d *p=&ptarr.at(0);    int i;   int n;//点的个数     n=ptarr.length();   AcGePoint2d startpoint=ptarr.first();   AcGePoint2d endpoint=ptarr.last();
//求顶点到其余点的对角线长  double*arry=new double;
 for(i=0;i<n-3;i++) //    arry=(ptarr.at(0)).distanceTo(ptarr.at(i+2)); arry=ptarr.distanceTo(ptarr); //求面积     double area=0;  int j=0;   for(j=0;j<n-2;j++)   { double a;  a=startpoint.distanceTo(ptarr);  // a=ads_distance(ptarr,ptarr);  double b;     b=(ptarr).distanceTo(ptarr); // b=ads_distance(ptarr,ptarr);     double d;     if (j<n-3)   d=arry;   else     d=startpoint.distanceTo(endpoint); //   d=ads_distance(ptarr,ptarr);     double c=(a+b+d)/2;     double s=sqrt(c*(c-a)*(c-b)*(c-d));     area+=s;   }  return area;  }
 //计算多边形面积        ！！需要修改，补凸的时候可能使临近两点变凹   double area(AcGePoint2dArray &ptarr) {   bool  PointInPolygon(AcGePoint2d& pt,AcGePoint2dArray &ptarr);     double areaoftriangle(AcGePoint2d ,AcGePoint2d,AcGePoint2d );     int n;//点的个数  n=4;     ptarr.at(0).set(10,10);     ptarr.at(1).set(10,20);     ptarr.at(2).set(20,20);     ptarr.at(3).set(20,10);
  double area=0;     double s=0;     int i;  for(i=0;i<n;i++)  {double s=0;  AcGePoint2d*ppt=new AcGePoint2d(ptarr.at(i));     ptarr.removeAt(i);     bool flag;  flag=PointInPolygon(*ppt,ptarr);   if(flag==true) ptarr.insertAt(i,*ppt);   else    {AcGeLine2d*line=new AcGeLine2d(ptarr.at((i-1+n-1)%(n-1)),ptarr.at((i+n-1)%(n-1)));        AcGePoint2d newpoint=(*ppt).mirror(*line);        ptarr.insertAt(i,newpoint);     s=s-2*(areaoftriangle(ptarr.at((n+i-1)%n),ptarr.at(i),ptarr.at((n+i+1)%n)));    }  }  area=areaofchimb(ptarr);  area=area-s;  return area;
}
 //以下判断点是否在多边形中，在返回false ,不在返回true     bool  PointInPolygon(AcGePoint2d& pt,AcGePoint2dArray &ptarr) {  int n = ptarr.length();     int i, count=0;                                 double yup, xup, ydown, xdown; // double y0, x0;  double t;  for( i=0; i< n; i++ )  {   if((pt.x ==(ptarr.at(i).x)&&(pt.y==ptarr.at(i).y)             //！！检查括号匹配不？？    || (pt.x==(ptarr.at((i+1)%n).x))&&(pt.y==(ptarr.at((i+1)%n).y))))         return true;  xup=(ptarr.at(i)).x>(ptarr.at((i+1)%n).x)?(ptarr.at(i)).x:(ptarr.at((i+1)%n).x);  yup=(ptarr.at(i)).y>(ptarr.at((i+1)%n).y)?(ptarr.at(i)).y:(ptarr.at((i+1)%n).y);  xdown=(ptarr.at(i)).x<(ptarr.at((i+1)%n).x)?(ptarr.at(i)).x:(ptarr.at((i+1)%n).x);  ydown=yup=(ptarr.at(i)).y<(ptarr.at((i+1)%n).y)?(ptarr.at(i)).y:(ptarr.at((i+1)%n).y);    if(pt.y>yup)     continue;    if(pt.y<ydown)     continue;    if(pt.y==ydown)      if(pt.y<yup&&pt.x<xdown)  count++;   else continue;    if(pt.y<yup&&pt.y>ydown)     double  t=xdown+(pt.y-ydown)*(xup-xdown)/(yup-ydown);  if(t>pt.x)  count++;  if(t=pt.x)  return true;  }   if(count%2==0)  return false;   else    return true; }
//计算三角形面积   double areaoftriangle(AcGePoint2d pt1,AcGePoint2d pt2,AcGePoint2d pt3)  {   double a,b,c,l,s;      a=pt1.distanceTo(pt2);      b=pt2.distanceTo(pt3);      c=pt3.distanceTo(pt1);      l=(a+b+c)/2;      s=sqrt(l*(l-a)*(l-b)*(l-c));      return s;  } 
--------------------Configuration: Lab5Command - Win32 Debug-------------------- Linking...    Creating library Debug/Lab5Command.lib and object Debug/Lab5Command.exp Lab5CommandMain.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: double __thiscall AcGePoint2d::distanceTo(class AcGePoint2d const &)const " (<A href="mailto:__imp_?distanceTo@AcGePoint2d@@QBENABV1@@Z" target="_blank" >__imp_?distanceTo@AcGePoint2d@@QBENABV1@@Z</A>) Lab5CommandMain.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall AcGePoint2d::AcGePoint2d(class AcGePoint2d const &)" (<A href="mailto:__imp_??0AcGePoint2d@@QAE@ABV0@@Z" target="_blank" >__imp_??0AcGePoint2d@@QAE@ABV0@@Z</A>) Lab5CommandMain.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: class AcGePoint2d & __thiscall AcGePoint2d::mirror(class AcGeLine2d const &)" (<A href="mailto:__imp_?mirror@AcGePoint2d@@QAEAAV1@ABVAcGeLine2d@@@Z" target="_blank" >__imp_?mirror@AcGePoint2d@@QAEAAV1@ABVAcGeLine2d@@@Z</A>) Lab5CommandMain.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall AcGeLine2d::AcGeLine2d(class AcGePoint2d const &,class AcGePoint2d const &)" (<A href="mailto:__imp_??0AcGeLine2d@@QAE@ABVAcGePoint2d@@0@Z" target="_blank" >__imp_??0AcGeLine2d@@QAE@ABVAcGePoint2d@@0@Z</A>) Lab5CommandMain.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: class AcGePoint2d & __thiscall AcGePoint2d::set(double,double)" (<A href="mailto:__imp_?set@AcGePoint2d@@QAEAAV1@NN@Z" target="_blank" >__imp_?set@AcGePoint2d@@QAEAAV1@NN@Z</A>) Lab5CommandMain.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall AcGePoint2d::AcGePoint2d(void)" (<A href="mailto:__imp_??0AcGePoint2d@@QAE@XZ" target="_blank" >__imp_??0AcGePoint2d@@QAE@XZ</A>) .\..\Lab5Command.arx : fatal error LNK1120: 6 unresolved externals Error executing link.exe.
Lab5Command.arx - 7 error(s), 0 warning(s)

unionsoft 发表于 2006-9-8 09:54:00

要包含库文件:acge15.lib（视ARX的版本而定，以acge开头的)

yang611 发表于 2006-9-8 17:16:00

if( (pt.x == (ptarr.at(i).x) && (pt.y==ptarr.at(i).y)  )           //！！检查括号匹配

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高手帮个啊忙啊