我要评论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();
}
}
}
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