欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

C#+MO实现一些渲染功能

程序员文章站 2023-11-09 13:11:40
using system; using system.drawing; using system.collections; using&nbs...
using system;
using system.drawing;
using system.collections;
using system.componentmodel;
using system.windows.forms;
using system.data;
namespace dbinmo
{
     /// <summary>
     /// form1 的摘要说明。
     /// </summary>
     public class 渲染示例 : system.windows.forms.form
     {
          private axmapobjects2.axmap map;
          private system.windows.forms.button 直方图;
          private system.windows.forms.button 饼图;
          private system.windows.forms.button 点密度;
          private system.windows.forms.button 按值渲染;
          private system.windows.forms.button 分类渲染;
          private system.windows.forms.button z值渲染;
          private system.windows.forms.button 组渲染;
          private system.windows.forms.button 退出;
          private system.windows.forms.panel 操作板;
          private system.windows.forms.button 删除所有渲染;
          private system.windows.forms.panel panel1;
          private system.windows.forms.button 全图;
          private system.windows.forms.button 拖动;
          private system.windows.forms.button 缩小;
          private system.windows.forms.button 放大;
          private system.windows.forms.panel 分隔符;
          private system.windows.forms.button 标注渲染;
         /// <summary>
         /// 必需的设计器变量。
         /// </summary>
          private system.componentmodel.container components = null;
         public 渲染示例()
         {
              //
              // windows 窗体设计器支持所必需的
              //
              initializecomponent();
              //
              // todo: 在 initializecomponent 调用后添加任何构造函数代码
              //
         }
         /// <summary>
         /// 清理所有正在使用的资源。
         /// </summary>
          protected override void dispose( bool disposing )
         {
              if( disposing )
              {
                   if (components != null) 
                   {
                        components.dispose();
                   }
              }
              base.dispose( disposing );
         }
          #region windows 窗体设计器生成的代码
         /// <summary>
         /// 设计器支持所需的方法 - 不要使用代码编辑器修改
         /// 此方法的内容。
         /// </summary>
          private void initializecomponent()
         {
              system.resources.resourcemanager resources = new system.resources.resourcemanager(typeof(渲染示例));
              this.map = new axmapobjects2.axmap();
              this.操作板 = new system.windows.forms.panel();
              this.直方图 = new system.windows.forms.button();
              this.饼图 = new system.windows.forms.button();
              this.点密度 = new system.windows.forms.button();
              this.按值渲染 = new system.windows.forms.button();
              this.分类渲染 = new system.windows.forms.button();
              this.z值渲染 = new system.windows.forms.button();
              this.组渲染 = new system.windows.forms.button();
              this.退出 = new system.windows.forms.button();
              this.标注渲染 = new system.windows.forms.button();
              this.删除所有渲染 = new system.windows.forms.button();
              this.panel1 = new system.windows.forms.panel();
              this.全图 = new system.windows.forms.button();
              this.拖动 = new system.windows.forms.button();
              this.缩小 = new system.windows.forms.button();
              this.放大 = new system.windows.forms.button();
              this.分隔符 = new system.windows.forms.panel();
              ((system.componentmodel.isupportinitialize)(this.map)).begininit();
              this.操作板.suspendlayout();
              this.suspendlayout();
              // 
              // map
              // 
              this.map.dock = system.windows.forms.dockstyle.fill;
              this.map.location = new system.drawing.point(0, 0);
              this.map.name = "map";
              this.map.ocxstate = ((system.windows.forms.axhost.state)(resources.getobject("map.ocxstate")));
              this.map.size = new system.drawing.size(616, 429);
              this.map.tabindex = 0;
              this.map.mousedownevent += new axmapobjects2._dmapevents_mousedowneventhandler(this.map_mousedownevent);
              // 
              // 操作板
              // 
              this.操作板.borderstyle = system.windows.forms.borderstyle.fixed3d;
              this.操作板.controls.add(this.删除所有渲染);
              this.操作板.controls.add(this.panel1);
              this.操作板.controls.add(this.全图);
              this.操作板.controls.add(this.拖动);
              this.操作板.controls.add(this.缩小);
              this.操作板.controls.add(this.放大);
              this.操作板.controls.add(this.分隔符);
              this.操作板.controls.add(this.标注渲染);
              this.操作板.controls.add(this.退出);
              this.操作板.controls.add(this.组渲染);
              this.操作板.controls.add(this.z值渲染);
              this.操作板.controls.add(this.分类渲染);
              this.操作板.controls.add(this.按值渲染);
              this.操作板.controls.add(this.点密度);
              this.操作板.controls.add(this.饼图);
              this.操作板.controls.add(this.直方图);
              this.操作板.dock = system.windows.forms.dockstyle.right;
              this.操作板.location = new system.drawing.point(496, 0);
              this.操作板.name = "操作板";
              this.操作板.size = new system.drawing.size(120, 429);
              this.操作板.tabindex = 1;
              // 
              // 直方图
              // 
              this.直方图.dock = system.windows.forms.dockstyle.top;
              this.直方图.location = new system.drawing.point(0, 0);
              this.直方图.name = "直方图";
              this.直方图.size = new system.drawing.size(116, 24);
              this.直方图.tabindex = 0;
              this.直方图.text = "直方图";
              this.直方图.click += new system.eventhandler(this.直方图_click);
              // 
              // 饼图
              // 
              this.饼图.dock = system.windows.forms.dockstyle.top;
              this.饼图.location = new system.drawing.point(0, 24);
              this.饼图.name = "饼图";
              this.饼图.size = new system.drawing.size(116, 24);
              this.饼图.tabindex = 1;
              this.饼图.text = "饼图";
              this.饼图.click += new system.eventhandler(this.饼图_click);
              // 
              // 点密度
              // 
              this.点密度.dock = system.windows.forms.dockstyle.top;
              this.点密度.location = new system.drawing.point(0, 48);
              this.点密度.name = "点密度";
              this.点密度.size = new system.drawing.size(116, 23);
              this.点密度.tabindex = 2;
              this.点密度.text = "点密度";
              this.点密度.click += new system.eventhandler(this.点密度_click);
              // 
              // 按值渲染
              // 
              this.按值渲染.dock = system.windows.forms.dockstyle.top;
              this.按值渲染.location = new system.drawing.point(0, 71);
              this.按值渲染.name = "按值渲染";
              this.按值渲染.size = new system.drawing.size(116, 23);
              this.按值渲染.tabindex = 3;
              this.按值渲染.text = "按值渲染";
              this.按值渲染.click += new system.eventhandler(this.按值渲染_click);
              // 
              // 分类渲染
              // 
              this.分类渲染.dock = system.windows.forms.dockstyle.top;
              this.分类渲染.location = new system.drawing.point(0, 94);
              this.分类渲染.name = "分类渲染";
              this.分类渲染.size = new system.drawing.size(116, 23);
              this.分类渲染.tabindex = 4;
              this.分类渲染.text = "分类渲染";
              this.分类渲染.click += new system.eventhandler(this.分类渲染_click);
              // 
              // z值渲染
              // 
              this.z值渲染.dock = system.windows.forms.dockstyle.top;
              this.z值渲染.location = new system.drawing.point(0, 117);
              this.z值渲染.name = "z值渲染";
              this.z值渲染.size = new system.drawing.size(116, 23);
              this.z值渲染.tabindex = 5;
              this.z值渲染.text = "z值渲染";
              this.z值渲染.click += new system.eventhandler(this.z值渲染_click);
              // 
              // 组渲染
              // 
              this.组渲染.dock = system.windows.forms.dockstyle.top;
              this.组渲染.location = new system.drawing.point(0, 140);
              this.组渲染.name = "组渲染";
              this.组渲染.size = new system.drawing.size(116, 23);
              this.组渲染.tabindex = 6;
              this.组渲染.text = "组渲染";
              this.组渲染.click += new system.eventhandler(this.组渲染_click);
              // 
              // 退出
              // 
              this.退出.dock = system.windows.forms.dockstyle.bottom;
              this.退出.location = new system.drawing.point(0, 402);
              this.退出.name = "退出";
              this.退出.size = new system.drawing.size(116, 23);
              this.退出.tabindex = 7;
              this.退出.text = "退出";
              this.退出.click += new system.eventhandler(this.退出_click);
              // 
              // 标注渲染
              // 
              this.标注渲染.dock = system.windows.forms.dockstyle.top;
              this.标注渲染.location = new system.drawing.point(0, 163);
              this.标注渲染.name = "标注渲染";
              this.标注渲染.size = new system.drawing.size(116, 23);
              this.标注渲染.tabindex = 7;
              this.标注渲染.text = "标注渲染";
              this.标注渲染.click += new system.eventhandler(this.标注渲染_click);
              // 
              // 删除所有渲染
              // 
              this.删除所有渲染.dock = system.windows.forms.dockstyle.top;
              this.删除所有渲染.location = new system.drawing.point(0, 319);
              this.删除所有渲染.name = "删除所有渲染";
              this.删除所有渲染.size = new system.drawing.size(116, 23);
              this.删除所有渲染.tabindex = 22;
              this.删除所有渲染.text = "删除所有渲染";
              this.删除所有渲染.click += new system.eventhandler(this.删除所有渲染_click);
              // 
              // panel1
              // 
              this.panel1.dock = system.windows.forms.dockstyle.top;
              this.panel1.location = new system.drawing.point(0, 299);
              this.panel1.name = "panel1";
              this.panel1.size = new system.drawing.size(116, 20);
              this.panel1.tabindex = 21;
              // 
              // 全图
              // 
              this.全图.dock = system.windows.forms.dockstyle.top;
              this.全图.location = new system.drawing.point(0, 276);
              this.全图.name = "全图";
              this.全图.size = new system.drawing.size(116, 23);
              this.全图.tabindex = 20;
              this.全图.text = "全图";
              this.全图.click += new system.eventhandler(this.全图_click);
              // 
              // 拖动
              // 
              this.拖动.dock = system.windows.forms.dockstyle.top;
              this.拖动.location = new system.drawing.point(0, 253);
              this.拖动.name = "拖动";
              this.拖动.size = new system.drawing.size(116, 23);
              this.拖动.tabindex = 19;
              this.拖动.text = "拖动";
              this.拖动.click += new system.eventhandler(this.拖动_click);
              // 
              // 缩小
              // 
              this.缩小.dock = system.windows.forms.dockstyle.top;
              this.缩小.location = new system.drawing.point(0, 230);
              this.缩小.name = "缩小";
              this.缩小.size = new system.drawing.size(116, 23);
              this.缩小.tabindex = 18;
              this.缩小.text = "缩小";
              this.缩小.click += new system.eventhandler(this.缩小_click);
              // 
              // 放大
              // 
              this.放大.dock = system.windows.forms.dockstyle.top;
              this.放大.location = new system.drawing.point(0, 207);
              this.放大.name = "放大";
              this.放大.size = new system.drawing.size(116, 23);
              this.放大.tabindex = 17;
              this.放大.text = "放大";
              this.放大.click += new system.eventhandler(this.放大_click);
              // 
              // 分隔符
              // 
              this.分隔符.dock = system.windows.forms.dockstyle.top;
              this.分隔符.location = new system.drawing.point(0, 186);
              this.分隔符.name = "分隔符";
              this.分隔符.size = new system.drawing.size(116, 21);
              this.分隔符.tabindex = 16;
              // 
              // 渲染示例
              // 
              this.autoscalebasesize = new system.drawing.size(6, 14);
              this.clientsize = new system.drawing.size(616, 429);
              this.controls.add(this.操作板);
              this.controls.add(this.map);
              this.name = "渲染示例";
              this.text = "渲染示例";
              this.windowstate = system.windows.forms.formwindowstate.maximized;
              ((system.componentmodel.isupportinitialize)(this.map)).endinit();
              this.操作板.resumelayout(false);
              this.resumelayout(false);
         }
          #endregion
         /// <summary>
         /// 应用程序的主入口点。
         /// </summary>
          [stathread]
         static void main() 
         {
              application.run(new 渲染示例());
         }
         /// <summary>
         /// 退出系统
         /// </summary>
          private void 退出_click(object sender, system.eventargs e)
         {
              this.close();
         }
         /// <summary>
         /// 图表渲染,值方图
         /// </summary>
          private void 直方图_click(object sender, system.eventargs e)
         {
              //直方图的例子中使用lakers图层
              //
              //定义图标渲染变量
              mapobjects2.chartrenderer cr = new mapobjects2.chartrendererclass();
              //设置渲染类型为直方图
              cr.charttype = mapobjects2.charttypeconstants.mobar;
              //设置直方图显示的字段个数为两个,就是直方图显示两个柱子
              cr.fieldcount = 2;
              //设置第一个字段,请参看lakes.dbf
              cr.set_field(0,"surf_elev");
              //设置这个直方图的柱子颜色为红色
              cr.set_color(0,(uint)mapobjects2.colorconstants.mored);
              //设置第二个柱子
              cr.set_field(1,"depth");
              cr.set_color(1,(uint)mapobjects2.colorconstants.mogreen);
              mapobjects2.maplayer lyr = (mapobjects2.maplayer)(map.layers.item("lakes"));
              lyr.renderer = cr;
              //使用refresh()刷新老也是刷新不好,正没办法。。。,设为全图倒是不错的注意,^_^
              map.refresh();
         }
         /// <summary>
         /// 全图视野
         /// </summary>
          private void 全图_click(object sender, system.eventargs e)
         {
              map.extent = map.fullextent;
         }
         /// <summary>
         /// 拖动,只设置图标
         /// </summary>
          private void 拖动_click(object sender, system.eventargs e)
         {
              map.mousepointer = mapobjects2.mousepointerconstants.mopan;
         }
         /// <summary>
         /// 缩小,只设置图标
         /// </summary>
          private void 缩小_click(object sender, system.eventargs e)
         {
              map.mousepointer = mapobjects2.mousepointerconstants.mozoomout;
         }
         /// <summary>
         /// 放大,只设置图标
         /// </summary>
          private void 放大_click(object sender, system.eventargs e)
         {
              map.mousepointer = mapobjects2.mousepointerconstants.mozoomin;
         }
         /// <summary>
         /// 鼠标按下时间,处理地图放大、缩小、拖动等。
         /// </summary>
          private void map_mousedownevent(object sender, axmapobjects2._dmapevents_mousedownevent e)
         {
              mapobjects2.rectangle rect;
              mapobjects2.point pt = map.tomappoint(e.x,e.y);
              if(e.button == 2)//右键点击取消
              {
                   map.mousepointer = mapobjects2.mousepointerconstants.modefault;
              }
              if(map.mousepointer == mapobjects2.mousepointerconstants.mopan)//拖动
              {
                   map.pan();
              }
              else if(map.mousepointer == mapobjects2.mousepointerconstants.mozoomin)//放大
              {
                   rect = map.trackrectangle();
                   if(rect == null|| (rect.width < 0.00005) || (rect.height < 0.00005))
                   {                           
                       rect = map.extent;
                        rect.scalerectangle(0.6667);
                        rect.offset(-(rect.center.x - pt.x),-(rect.center.y - pt.y));
                   }
                   map.extent = rect;
              }
              else if(map.mousepointer == mapobjects2.mousepointerconstants.mozoomout)//缩小
              {
                   rect = map.trackrectangle();
                   if ((null == rect) || (rect.width < 0.00005) || (rect.height < 0.00005))
                   {
                       rect = map.extent;
                        rect.scalerectangle(1.5);
                        rect.offset(-(rect.center.x - pt.x),-(rect.center.y - pt.y));
                   }
                   else
                   {    
                       double drate = map.extent.width / rect.width * 10;  
                        rect.scalerectangle(drate);
                   }
                   map.extent = rect;
              }
          }
         /// <summary>
         /// 图表渲染,使用饼图
         /// </summary>
          private void 饼图_click(object sender, system.eventargs e)
         {
              //饼图的例子中使用lakers图层
              //过程和直方图一样
              //
              //定义图标渲染变量
              mapobjects2.chartrenderer cr = new mapobjects2.chartrendererclass();
              //设置渲染类型为饼图
              cr.charttype = mapobjects2.charttypeconstants.mopie;
              //设置饼图显示的字段个数为两个,就是饼图显示两半
              cr.fieldcount = 2;
              //设置第一个字段,请参看lakes.dbf
              cr.set_field(0,"surf_elev");
              //设置这个饼图的一半颜色为红色
              cr.set_color(0,(uint)mapobjects2.colorconstants.mored);
              //设置第二半
              cr.set_field(1,"depth");
              cr.set_color(1,(uint)mapobjects2.colorconstants.mogreen);
              //添加到地图上
              mapobjects2.maplayer lyr = (mapobjects2.maplayer)(map.layers.item("lakes"));
              lyr.renderer = cr;
              //刷新
              map.refresh();      
         }
         /// <summary>
         /// 点密度渲染
         /// </summary>
          private void 点密度_click(object sender, system.eventargs e)
         {
              //点密度的例子中使用lakes图层
              //
              //定义点密度渲染变量
              mapobjects2.dotdensityrenderer ddr = new mapobjects2.dotdensityrendererclass();
              //设置渲染的数据字段,请参看lakes.dbf
              ddr.field = "depth";
              //点大小
              ddr.dotsize = 3;
              //点颜色
              ddr.dotcolor = (uint)mapobjects2.colorconstants.moblue;
              ddr.dotvalue = 1;
              ddr.drawbackground = true;
              //添加到地图上
              mapobjects2.maplayer lyr = (mapobjects2.maplayer)(map.layers.item("lakes"));
              lyr.renderer = ddr;
              //刷新
              map.refresh();
         }
         /// <summary>
         /// 按值渲染
         /// </summary>
          private void 按值渲染_click(object sender, system.eventargs e)
         {
              //按值渲染的例子中使用country图层,这里利用按值渲染,将每个国家用不同的颜色显示
              //
              //字符串s变量,很像delphi中的tstringlist,^_^
              mapobjects2.strings strs = new mapobjects2.stringsclass();
              //图层变量,引用country图层
              mapobjects2.maplayer lyr = (mapobjects2.maplayer)map.layers.item("country");
              //recordset对象,我将在以后的文章中陆续讲解关于mapobjects2.2中使用数据集变量的内容!!!
              //使用方法大致与vb中对数据表的操作差不多。
              mapobjects2.recordset rc = lyr.records;
              //这个循环获取所有国家的简称代码列表
              while(!rc.eof)
              {
                   strs.add(rc.fields.item("fips_code").valueasstring);
                   rc.movenext();
              }
              //定义按值渲染对象
              mapobjects2.valuemaprenderer vmr = new mapobjects2.valuemaprendererclass();
              //将其添加到图层
              lyr.renderer = vmr;
              //设置渲染使用的字段,请参看country.dbf文件
              vmr.field = "fips_code";
              //渲染的个数
              vmr.valuecount = strs.count;
              //缺省值
              vmr.usedefault = true;
              mapobjects2.symbol sym = vmr.defaultsymbol;
              sym.color = (uint)mapobjects2.colorconstants.moyellow;//缺省颜色为黄色
              //渲染过程
              for(int i=0;i<vmr.valuecount;i++)
              {
                   vmr.set_value((short)i,strs.item((short)i));
              }
              //刷新
              map.refresh();
         }
         /// <summary>
         /// 分类渲染
         /// </summary>
          private void 分类渲染_click(object sender, system.eventargs e)
         {
              //分类渲染的例子使用country图层
              //
              //图层变量引用cities层
              mapobjects2.maplayer lyr = (mapobjects2.maplayer)(map.layers.item("cities"));
              //定义分类渲染变量
              mapobjects2.classbreaksrenderer cbr = new mapobjects2.classbreaksrendererclass();
              //添加到地图
              lyr.renderer = cbr;
              //设置符号类型为点,也可使用其他类型,请自己试验,方法大概都差不多
              cbr.symboltype = mapobjects2.symboltypeconstants.mopointsymbol;
              //设置字段,请参看cities.dbf文件
              cbr.field = "population";
              //statistics对象经常配合分类渲染使用,他表示用一个recordset对象的calculatestatistics方法
              //  对一个数值字段的统计计算结果
              mapobjects2.statistics stat = lyr.records.calculatestatistics("population");
              //mean——平均值,stddev——均方差
              double fbv = stat.mean - (stat.stddev * 3);
              for(int i=0;i<6;i++)
              {
                   if((fbv >= stat.min)&&fbv <= stat.max)
                   {
                       //分类个数,依次加一
                        cbr.breakcount = (short)(cbr.breakcount + 1);
                       //设置分类
                        cbr.set_break((short)(cbr.breakcount - 1),fbv);
                   }
                   fbv += stat.stddev;
              }
              //sizesymbols方法制定头尾的大小用来表现点特征大小渐进效果
              cbr.sizesymbols(3,8);
              //rampcolors方法设置颜色从白色到红色的渐进显示
              cbr.rampcolors((uint)mapobjects2.colorconstants.mowhite,(uint)mapobjects2.colorconstants.mored);
              //刷新
              map.refresh();
         }
         /// <summary>
         /// z值渲染
         /// </summary>
          private void z值渲染_click(object sender, system.eventargs e)
         {
              //本来想好好搞搞,可是我找不到带有z值的地图,哈哈,认了吧,下面给出基本的语句,有兴趣的
              //兄弟姐妹们可以自己试试
//            mapobjects2.zrenderer zr = new mapobjects2.zrendererclass();
//            //z值分成几部分?
//            zr.breakcount = 2;
//            //设置各个部分的分界线
//            zr.set_break(0,100);
//            zr.set_break(1,1000);
//            //设置特征类型
//            zr.symboltype = mapobjects2.symboltypeconstants.mopointsymbol;
//            mapobjects2.symbol sym;
//            for(short i=0;i<zr.breakcount;i++)
//            {
//                 //获取特征
//                 sym = zr.get_symbol(i);
//                 //设置特征属性,定义一个颜色数组,将不同特征设置不同颜色,效果会明显些
//                 sym.color = (uint)mapobjects2.colorconstants.mored;
//                 sym.size = 6;
//                 sym.style = mapobjects2.markerstyleconstants.motrianglemarker;
//            }
//            //添加到地图
//            mapobjects2.maplayer lyr = (mapobjects2.maplayer)map.layers.item("带有z值的图层名称");
//            lyr.renderer = zr;
//            //刷新
//            map.refresh();
         }
        /// <summary>
        /// 组渲染
        /// </summary>
        private void 组渲染_click(object sender, system.eventargs e)
         {
              //组渲染其实就是组合渲染,一般定义多个渲染方式,然后使用如下的语句进行组合
              mapobjects2.maplayer lyr = (mapobjects2.maplayer)map.layers.item("country");
              //标注渲染
              mapobjects2.labelrenderer lr = new mapobjects2.labelrendererclass();
              lr.field = "name";
              lr.get_symbol(0).color = (uint)mapobjects2.colorconstants.moblack;
              lr.get_symbol(0).font.size = 8;
              //按值渲染
              mapobjects2.strings strs = new mapobjects2.stringsclass();
              mapobjects2.recordset rc = lyr.records;
              while(!rc.eof)
              {
                   strs.add(rc.fields.item("fips_code").valueasstring);
                   rc.movenext();
              }
              mapobjects2.valuemaprenderer vmr = new mapobjects2.valuemaprendererclass();
              vmr.field = "fips_code";
              vmr.valuecount = strs.count;
              vmr.usedefault = true;
              mapobjects2.symbol sym = vmr.defaultsymbol;
              sym.color = (uint)mapobjects2.colorconstants.moyellow;
              for(int i=0;i<vmr.valuecount;i++)
              {
                   vmr.set_value((short)i,strs.item((short)i));
              }
              //将二者组合,添加到图层
              mapobjects2.grouprenderer gr = new mapobjects2.grouprendererclass();
              gr.add(vmr);
              gr.add(lr);
              lyr.renderer = gr;
              map.refresh();
         }
         /// <summary>
         /// 删除所有渲染
         /// </summary>
          private void 删除所有渲染_click(object sender, system.eventargs e)
         {
              mapobjects2.maplayer lyr;
              for(int i=0;i<map.layers.count;i++)
              {
                   lyr = (mapobjects2.maplayer)map.layers.item(i);
                   lyr.renderer = new mapobjects2.labelrendererclass();
                   map.refresh();
              }
         }
         /// <summary>
         /// 标注渲染
         /// </summary>
          private void 标注渲染_click(object sender, system.eventargs e)
         {
              mapobjects2.maplayer lyr = (mapobjects2.maplayer)map.layers.item("cities");
              mapobjects2.labelrenderer lr = new mapobjects2.labelrendererclass();
              lr.field = "name";
              lr.get_symbol(0).color = (uint)mapobjects2.colorconstants.moblack;
              lr.get_symbol(0).font.size = 8;
              lyr.renderer = lr;
              map.refresh();
         }
     }
}