SuperMap5.0平台点状符号数据导出与绘制

楼主^#

更多发布于：2008-01-04 16:58

SuperMap5.0中的资源有三种：符号库，线型库和填充库。即对应平常所说的点状符号，线状符号和面状符号。
 其中点状符号对应着*.sym文件。符号编辑器提供了输出符号库的功能，即可将原始的点状符号文件导出成为ASCII码类型的*.smi文件。分析并读取此文件后，完成绘制功能，即可实现资源共享的目标。
 所需要注意的问题：
1) 颜色。Pen和Brush中颜色的记录方法不是通常直接的RGB颜色，需要进行转换。如Brush中的参数16711680对应蓝色，是在得到此数字后，将此十进制数据转换成十六进制字串FF0000，因为FF对应着十进制数字255，00依旧是十进制数字00，所以此字串对应着颜色BGR（255,0,0），与平时使用的RGB颜色的顺序刚好相反。
2) Y轴的起点和方向，导出的文件数据中记录的Y轴起点在左上角，方向朝下，与某些系统中采用的Y轴起点在左下角，方向朝上是不同，所以处理时候采用变换：ynew = L – yold.
3) ARC的数据结构。导出的文件Arc部分，往往记录着四组XY顶点对，第一和第二顶点对表示要提取的椭圆弧的起点和终点，以逆时针方向为准。第三和第四顶点对表示椭圆的长短轴端点，以此可确定椭圆的参数。 
附参考代码: 
void ExportSuperSymbol::AddSuperMapPolygon(Vertex2dVector ;PtList,COLORREF crPen,COLORREF crBrush) { m_iPolygonNumbers = m_iPolygonNumbers + 1; m_geoAtomPolygon =(geoatom::CGeoAtomPolygon**)realloc(m_geoAtomPolygon,m_iPolygonNumbers*sizeof(geoatom::CGeoAtomPolygon*)); m_geoAtomPolygon[m_iPolygonNumbers-1] = new geoatom::CGeoAtomPolygon(); //原子分配内存，由于数组从0开始记数，标记总是比个数少1
 for (int m=0;m<PtList.size();m++) { m_geoAtomPolygon[m_iPolygonNumbers-1]->GetPtList()->add(m_fXaddition+m_iSize*PtList.get(m).x,m_fYaddition+m_fLength-m_iSize*PtList.get(m).y); } m_geoAtomPolygon[m_iPolygonNumbers-1]->SetColor(crPen); m_geoAtomPolygon[m_iPolygonNumbers-1]->SetFilledColor(crBrush); m_geoSymPoint[m_iPointSymbolNum-1]->AddAtom(m_geoAtomPolygon[m_iPolygonNumbers-1]); //将封闭区要素添加到这个符号中
}
void ExportSuperSymbol::AddSuperMapRectangle(double dLeftTopX,double dLeftTopY,double dRightBottomX,double dRightBottomY,COLORREF crPen,COLORREF crBrush) { ///为填充的Rectangle m_iPolygonNumbers = m_iPolygonNumbers + 1; //矩形属于Polygon一种 m_geoAtomPolygon =(geoatom::CGeoAtomPolygon**)realloc(m_geoAtomPolygon,m_iPolygonNumbers*sizeof(geoatom::CGeoAtomPolygon*)); m_geoAtomPolygon[m_iPolygonNumbers-1] = new geoatom::CGeoAtomPolygon(); //原子分配内存，由于数组从0开始记数，标记总是比个数少1
 //矩形的四个顶点 m_geoAtomPolygon[m_iPolygonNumbers-1]->GetPtList()->add(m_fXaddition+m_iSize*dLeftTopX,m_fYaddition+m_fLength-m_iSize*dLeftTopY); m_geoAtomPolygon[m_iPolygonNumbers-1]->GetPtList()->add(m_fXaddition+m_iSize*dRightBottomX,m_fYaddition+m_fLength-m_iSize*dLeftTopY); m_geoAtomPolygon[m_iPolygonNumbers-1]->GetPtList()->add(m_fXaddition+m_iSize*dRightBottomX,m_fYaddition+m_fLength-m_iSize*dRightBottomY); m_geoAtomPolygon[m_iPolygonNumbers-1]->GetPtList()->add(m_fXaddition+m_iSize*dLeftTopX,m_fYaddition+m_fLength-m_iSize*dRightBottomY);
 m_geoAtomPolygon[m_iPolygonNumbers-1]->SetColor(crPen); m_geoAtomPolygon[m_iPolygonNumbers-1]->SetFilledColor(crBrush); m_geoSymPoint[m_iPointSymbolNum-1]->AddAtom(m_geoAtomPolygon[m_iPolygonNumbers-1]); //将封闭区要素添加到这个符号中 }
void ExportSuperSymbol::AddSuperMapEllipse(double dFirstX,double dFirstY,double dSecondX,double dSecondY,double dMajorRadio,double dMinorRadio,COLORREF crPen,COLORREF crBrush) { m_iEllipseNumbers = m_iEllipseNumbers + 1; m_geoAtomEllipse = (geoatom::CGeoAtomEllipse**)realloc(m_geoAtomEllipse,m_iEllipseNumbers*sizeof(geoatom::CGeoAtomEllipse)); m_geoAtomEllipse[m_iEllipseNumbers-1] = new geoatom::CGeoAtomEllipse();
 double dCenterX=0; //圆心的位置 double dCenterY=0;
 if(dFirstX<dSecondX;;dFirstY<dSecondY) { dCenterX = dFirstX+abs(dSecondX - dFirstX)/2; //圆心的位置 dCenterY = dFirstY+abs(dSecondY - dFirstY)/2; } else if(dFirstX<dSecondX;;dFirstY>dSecondY) { dCenterX = dFirstX+abs(dSecondX - dFirstX)/2; //圆心的位置 dCenterY = dSecondY+abs(dSecondY - dFirstY)/2; } else if(dFirstX>dSecondX;;dFirstY<dSecondY) { dCenterX = dSecondX+abs(dSecondX - dFirstX)/2; //圆心的位置 dCenterY = dFirstY+abs(dSecondY - dFirstY)/2; } else { dCenterX = dSecondX+abs(dSecondX - dFirstX)/2; //圆心的位置 dCenterY = dSecondY+abs(dSecondY - dFirstY)/2; }
 m_geoAtomEllipse[m_iEllipseNumbers-1]->SetCenterPoint(m_fXaddition+m_iSize*dCenterX,m_fYaddition+m_fLength-m_iSize*dCenterY); m_geoAtomEllipse[m_iEllipseNumbers-1]->SetMajorAxis(dMajorRadio*m_iSize); m_geoAtomEllipse[m_iEllipseNumbers-1]->SetMinorAxis(dMinorRadio*m_iSize); m_geoAtomEllipse[m_iEllipseNumbers-1]->SetStartAngleRad(0.0); m_geoAtomEllipse[m_iEllipseNumbers-1]->SetEndAngleRad(6.2832); //360角度与弧度的换算 m_geoAtomEllipse[m_iEllipseNumbers-1]->SetColor(crPen); m_geoAtomEllipse[m_iEllipseNumbers-1]->SetFilled(true); //要求填充 m_geoAtomEllipse[m_iEllipseNumbers-1]->SetFilledColor(crBrush); m_geoSymPoint[m_iPointSymbolNum-1]->AddAtom(m_geoAtomEllipse[m_iEllipseNumbers-1]); }
void ExportSuperSymbol::AddSuperMapArc(double dFirstX,double dFirstY,double dSecondX,double dSecondY,double dThirdX,double dThirdY,double dFourthX,double dFourthY,COLORREF crPen) { double dCenterX = 0; double dCenterY = 0; if(abs(dFirstX-dThirdX)<0.00001;;abs(dFirstY-dThirdY)<0.00001 ;; abs(dSecondX-dFourthX)<0.00001;;abs(dSecondY-dFourthY)<0.00001) { //此椭圆特殊化为四分只一 m_iEllipseNumbers = m_iEllipseNumbers + 1; m_geoAtomEllipse = (geoatom::CGeoAtomEllipse**)realloc(m_geoAtomEllipse,m_iEllipseNumbers*sizeof(geoatom::CGeoAtomEllipse)); m_geoAtomEllipse[m_iEllipseNumbers-1] = new geoatom::CGeoAtomEllipse();
 if(dFirstX>dSecondX) //分情况讨论，好比四个象限 { if(dFirstY>dSecondY) { m_geoAtomEllipse[m_iEllipseNumbers-1]->SetStartAngleRad(0); //0角度与弧度的换算,注意圆的旋转方向是逆或顺时针 m_geoAtomEllipse[m_iEllipseNumbers-1]->SetEndAngleRad(1.5708); //90角度与弧度的换算 dCenterX = dSecondX; //取第二个点的X数值 dCenterY = dFirstY; //取较大Y数值 } else { m_geoAtomEllipse[m_iEllipseNumbers-1]->SetStartAngleRad(1.5708); //90角度与弧度的换算,注意圆的旋转方向是逆或顺时针 m_geoAtomEllipse[m_iEllipseNumbers-1]->SetEndAngleRad(3.1416); //180角度与弧度的换算 dCenterX = dFirstX; //取第一个点的X数值 dCenterY = dSecondY; //取较大Y数值 } } else { if(dFirstY<dSecondY) { m_geoAtomEllipse[m_iEllipseNumbers-1]->SetStartAngleRad(3.1416); //180角度与弧度的换算,注意圆的旋转方向是逆或顺时针 m_geoAtomEllipse[m_iEllipseNumbers-1]->SetEndAngleRad(4.7124); //270角度与弧度的换算 dCenterX = dSecondX; dCenterY = dFirstY; //取较小Y数值 } else { m_geoAtomEllipse[m_iEllipseNumbers-1]->SetStartAngleRad(4.7124); //270角度与弧度的换算,注意圆的旋转方向是逆或顺时针 m_geoAtomEllipse[m_iEllipseNumbers-1]->SetEndAngleRad(6.2832); //360角度与弧度的换算 dCenterX = dFirstX; dCenterY = dSecondY; //取较小Y数值 } } double dMajorRadio = 0; double dMinorRadio = 0; dMajorRadio = abs(dSecondX - dFirstX); //得到半径 dMinorRadio = abs(dSecondY - dFirstY);
 m_geoAtomEllipse[m_iEllipseNumbers-1]->SetCenterPoint(m_fXaddition+m_iSize*dCenterX,m_fYaddition+m_fLength-m_iSize*dCenterY); m_geoAtomEllipse[m_iEllipseNumbers-1]->SetMajorAxis(dMajorRadio*m_iSize); m_geoAtomEllipse[m_iEllipseNumbers-1]->SetMinorAxis(dMinorRadio*m_iSize);
 m_geoSymPoint[m_iPointSymbolNum-1]->AddAtom(m_geoAtomEllipse[m_iEllipseNumbers-1]); } else { //给出长短轴端点和起终点的情况 m_iEllipseNumbers = m_iEllipseNumbers + 1; m_geoAtomEllipse = (geoatom::CGeoAtomEllipse**)realloc(m_geoAtomEllipse,m_iEllipseNumbers*sizeof(geoatom::CGeoAtomEllipse)); m_geoAtomEllipse[m_iEllipseNumbers-1] = new geoatom::CGeoAtomEllipse();
 double dAngleStart = 0; double dAngleEnd = 3.1416; //单位为弧度，在函数库中角度均以弧度来表示
 if(dFirstX>dSecondX) //比较起始点 { if(dThirdX<dFourthX) { dCenterX = dFourthX; //得到椭圆的中心 dCenterY = dThirdY;
 dAngleStart = atan((dFirstY - dCenterY)/(dFirstX - dCenterX)); dAngleEnd = atan((dSecondY - dCenterY)/(dSecondX - dCenterX));
 } else if(dThirdX>dFourthX;;dThirdY<dFourthY) { dCenterX = dThirdX; dCenterY = dFourthY;
 dAngleStart = atan((dFirstY - dCenterY)/(dFirstX - dCenterX)); dAngleEnd = atan((dSecondY - dCenterY)/(dSecondX - dCenterX));
 if(dFirstX>dCenterX;;dFirstY<dCenterY) dAngleStart = -dAngleStart;
 if(dFirstX == dCenterX) dAngleStart = 1.5708; if(dFirstX<dCenterX;;dFirstY<dCenterY) dAngleStart = -dAngleStart + 3.1416;
 if(dSecondX<dCenterX;;dSecondY>dCenterY) dAngleEnd = -dAngleEnd + 3.1416; if(dSecondX<dCenterX;;dSecondY<=dCenterY) dAngleEnd = -dAngleEnd+3.1416; if(dSecondX==dCenterX) dAngleStart = 3.1416; } else if(dThirdX>dFourthX;;dThirdY>dFourthY) { dCenterX = dFourthX; dCenterY = dThirdY;
 dAngleStart = atan((dFirstY - dCenterY)/(dFirstX - dCenterX)); dAngleEnd = atan((dSecondY - dCenterY)/(dSecondX - dCenterX));
 if(dFirstX>=dCenterX;;dFirstY<dCenterY) dAngleStart = -dAngleStart; if(dSecondX<dCenterX;;dSecondY<dCenterY) dAngleEnd = -dAngleEnd+3.1416;
 } else { dCenterX = dThirdX; dCenterY = dFourthY;
 dAngleStart = atan((dFirstY - dCenterY)/(dFirstX - dCenterX)); dAngleEnd = atan((dSecondY - dCenterY)/(dSecondX - dCenterX));
 }
 } else //dFirstX<dSecondX {
 if(dThirdX<dFourthX;;dThirdY>dFourthY) { dCenterX = dThirdX; dCenterY = dFourthY;
 dAngleStart = atan((dFirstY - dCenterY)/(dFirstX - dCenterX)); //返回的结果在-1.5708与1.5708之间 dAngleEnd = atan((dSecondY - dCenterY)/(dSecondX - dCenterX));
 if(dFirstX<dCenterX;;dFirstY>dCenterY) dAngleStart = -dAngleStart+3.1416; if(dSecondX>dCenterX;;dSecondY>dCenterY) dAngleEnd = - dAngleEnd + 6.2832; } else if(dThirdX<dFourthX;;dThirdY<dFourthY) { dCenterX = dFourthX; dCenterY = dThirdY;
 dAngleStart = atan((dFirstY - dCenterY)/(dFirstX - dCenterX)); //返回的结果在-1.5708与1.5708之间 dAngleEnd = atan((dSecondY - dCenterY)/(dSecondX - dCenterX));
 if(dFirstX<dCenterX;;dFirstY<dCenterY) dAngleStart = -dAngleStart+3.1416; if(dSecondX>=dCenterX;;dSecondY>dCenterY) dAngleEnd = - dAngleEnd + 6.2832;
 } else if(dThirdX>dFourthX;;dThirdY<dFourthY) { dCenterX = dThirdX; dCenterY = dFourthY;
 dAngleStart = atan((dFirstY - dCenterY)/(dFirstX - dCenterX)); dAngleEnd = atan((dSecondY - dCenterY)/(dSecondX - dCenterX)); if(dFirstX<dCenterX;;dFirstY<dCenterY) dAngleStart = -dAngleStart+3.1416; if(dFirstX>dCenterX;;dFirstY<dCenterY) dAngleStart = -dAngleStart; if(dSecondX>dCenterX;;dSecondY>dCenterY) dAngleEnd = - dAngleEnd + 6.2832; } else { dCenterX = dFourthX; dCenterY = dThirdY;
 dAngleStart = atan((dFirstY - dCenterY)/(dFirstX - dCenterX)); dAngleEnd = atan((dSecondY - dCenterY)/(dSecondX - dCenterX)); }
 }
 double dMajorRadio = abs(dThirdX - dFourthX); //通过第三和第四个点求得 double dMinorRadio = abs(dThirdY - dFourthY); m_geoAtomEllipse[m_iEllipseNumbers-1]->SetStartAngleRad(dAngleStart); m_geoAtomEllipse[m_iEllipseNumbers-1]->SetEndAngleRad(dAngleEnd); m_geoAtomEllipse[m_iEllipseNumbers-1]->SetCenterPoint(m_fXaddition+m_iSize*dCenterX,m_fYaddition+m_fLength-m_iSize*dCenterY); m_geoAtomEllipse[m_iEllipseNumbers-1]->SetMajorAxis(dMajorRadio*m_iSize); m_geoAtomEllipse[m_iEllipseNumbers-1]->SetMinorAxis(dMinorRadio*m_iSize); m_geoAtomEllipse[m_iEllipseNumbers-1]->SetColor(crPen); m_geoSymPoint[m_iPointSymbolNum-1]->AddAtom(m_geoAtomEllipse[m_iEllipseNumbers-1]); } } 附参考图: <IMG src="http://www.cnblogs.com/images/cnblogs_com/wuhanhoutao/116501/r_SuperMAPSymbol1.jpg" border=0>

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engineerup 路人甲注册日期2007-02-27 发帖数129 QQ 铜币450枚威望0点贡献值0点银元0个加关注写私信	1楼^# 发布于：2008-01-04 21:29 <DIV>谢谢你的信息</DIV>
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SuperMap5.0平台点状符号数据导出与绘制

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